desubmodulize libsndfile - PLEASE READ

it appears a one-character typo in the cmake_minimum_required line prevents it from compiling under CMake 4.0.
in order to fix that, I had to take this thing out of submodules...

it is recommended to do this after you pull;

git submodule deinit extern/libsndfile

.github/workflows/build.yml

@@ -18,14 +18,14 @@ jobs:
     strategy:
       matrix:
         config:
-          #- { name: 'Windows MSVC x86', os: windows-latest, compiler: msvc, arch: x86 }
+          - { name: 'Windows MSVC x86', os: windows-latest, compiler: msvc, arch: x86 }
-          #- { name: 'Windows MSVC x86_64', os: windows-latest, compiler: msvc, arch: x86_64 }
+          - { name: 'Windows MSVC x86_64', os: windows-latest, compiler: msvc, arch: x86_64 }
           #- { name: 'Windows MinGW x86', os: ubuntu-20.04, compiler: mingw, arch: x86 }
           #- { name: 'Windows MinGW x86_64', os: ubuntu-20.04, compiler: mingw, arch: x86_64 }
           - { name: 'macOS x86_64', os: macos-13, arch: x86_64 }
           - { name: 'macOS ARM', os: macos-latest, arch: arm64 }
-          #- { name: 'Linux x86_64', os: ubuntu-20.04, arch: x86_64 }
+          - { name: 'Linux x86_64', os: ubuntu-20.04, arch: x86_64 }
-          #- { name: 'Linux ARM', os: ubuntu-18.04, arch: armhf }
+          - { name: 'Linux ARM', os: ubuntu-18.04, arch: armhf }
       fail-fast: true
 
     name: ${{ matrix.config.name }}
@@ -190,7 +190,6 @@ jobs:
 
         cmake \
           -B ${PWD}/build \
-          -DCMAKE_DCMAKE_POLICY_VERSION_MINIMUM=3.5 \
           -DCMAKE_INSTALL_PREFIX=/usr \
           -DCMAKE_BUILD_TYPE=${{ env.BUILD_TYPE }} \
           -DWARNINGS_ARE_ERRORS=${USE_WAE} \

.gitmodules

@@ -2,10 +2,6 @@
 	path = extern/SDL
 	url = https://github.com/libsdl-org/SDL.git
 	branch = release-2.28.x
-[submodule "extern/libsndfile"]
-	path = extern/libsndfile
-	url = https://github.com/libsndfile/libsndfile.git
-	branch = master
 [submodule "extern/fmt"]
 	path = extern/fmt
 	url = https://github.com/fmtlib/fmt.git

CMakeLists.txt

@@ -287,7 +287,7 @@ if (USE_SNDFILE)
     set(BUILD_EXAMPLES OFF CACHE BOOL "a" FORCE)
     set(ENABLE_EXTERNAL_LIBS OFF CACHE BOOL "come on" FORCE)
     set(ENABLE_MPEG OFF CACHE BOOL "come on" FORCE)
-    add_subdirectory(extern/libsndfile EXCLUDE_FROM_ALL)
+    add_subdirectory(extern/libsndfile-modified EXCLUDE_FROM_ALL)
     list(APPEND DEPENDENCIES_LIBRARIES sndfile)
     message(STATUS "Using vendored libsndfile")
   endif()

extern/libsndfile-modified/.editorconfig

@@ -0,0 +1,16 @@
+root = true
+
+[*]
+insert_final_newline = true
+
+[*.{h,hpp,c,tpl,def}]
+indent_style = tab
+tab_width = 4
+
+[*.py]
+indent_style = space
+indent_size = 4
+
+[*.yml]
+indent_style = space
+indent_size = 2

extern/libsndfile-modified/.gitattributes

@@ -0,0 +1,19 @@
+# Set the default behavior, in case people don't have core.autocrlf set.
+* text=auto
+
+# Declare files that will always have CRLF line endings on checkout.
+*.ac text eol=lf
+*.am text eol=lf
+*.m4 text eol=lf
+*.pc text eol=lf
+*.spec text eol=lf
+*.sh text eol=lf
+
+# Explicitly declare text files you want to always be normalized and converted
+# to native line endings on checkout.
+*.c text
+*.h text
+
+# exclude repository configurations from 'git archive'
+.git*      	export-ignore
+.travis.yml	export-ignore

extern/libsndfile-modified/.github/workflows/action.yml

@@ -0,0 +1,238 @@
+name: C/C++ CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        name: [
+          ubuntu-gcc-autotools,
+          ubuntu-clang-autotools,
+          ubuntu-gcc-ossfuzz,
+          macos-autotools,
+          ubuntu-gcc-cmake,
+          ubuntu-gcc-cmake-shared,
+          ubuntu-clang-cmake,
+          ubuntu-clang-cmake-shared,
+          macos-cmake,
+          macos-cmake-shared,
+          windows-vs2022-x64,
+          windows-vs2022-x64-shared,
+          windows-vs2022-Win32,
+          windows-vs2022-Win32-shared
+        ]
+        include:
+          - name: ubuntu-gcc-autotools
+            os: ubuntu-latest
+            cc: gcc
+            cxx: g++
+            autotools-options: --enable-werror
+            build-system: autotools
+
+          - name: ubuntu-clang-autotools
+            os: ubuntu-latest
+            cc: clang
+            cxx: clang++
+            autotools-options: --enable-werror
+            build-system: autotools
+
+          - name: ubuntu-gcc-ossfuzz
+            os: ubuntu-latest
+            cc: gcc
+            cxx: g++
+            autotools-options: --enable-werror
+            build-system: ossfuzz
+
+          - name: macos-autotools
+            os: macos-latest
+            cc: clang
+            cxx: clang++
+            autotools-options: --enable-werror
+            build-system: autotools
+
+          - name: ubuntu-gcc-cmake
+            os: ubuntu-latest
+            cc: gcc
+            cxx: g++
+            build-system: cmake
+            cmake-generator: 'Ninja'
+            cmake-options: >-
+              -DCMAKE_BUILD_TYPE=Release
+              -DCMAKE_C_FLAGS="-Wall -Wextra"
+              -DCMAKE_VERBOSE_MAKEFILE=ON
+
+          - name: ubuntu-gcc-cmake-shared
+            os: ubuntu-latest
+            cc: gcc
+            cxx: g++
+            build-system: cmake
+            cmake-generator: 'Ninja'
+            cmake-options: >-
+              -DCMAKE_BUILD_TYPE=Release
+              -DBUILD_SHARED_LIBS=ON
+              -DCMAKE_C_FLAGS="-Wall -Wextra"
+              -DCMAKE_VERBOSE_MAKEFILE=ON
+
+          - name: ubuntu-clang-cmake
+            os: ubuntu-latest
+            cc: clang
+            cxx: clang++
+            build-system: cmake
+            cmake-generator: 'Ninja'
+            cmake-options: >-
+              -DCMAKE_BUILD_TYPE=Release
+              -DCMAKE_C_FLAGS="-Wall -Wextra"
+              -DCMAKE_VERBOSE_MAKEFILE=ON
+
+          - name: ubuntu-clang-cmake-shared
+            os: ubuntu-latest
+            cc: clang
+            cxx: clang++
+            build-system: cmake
+            cmake-generator: 'Ninja'
+            cmake-options: >-
+              -DCMAKE_BUILD_TYPE=Release
+              -DBUILD_SHARED_LIBS=ON
+              -DCMAKE_C_FLAGS="-Wall -Wextra"
+              -DCMAKE_VERBOSE_MAKEFILE=ON
+
+          - name: macos-cmake
+            os: macos-latest
+            cc: clang
+            cxx: clang++
+            build-system: cmake
+            cmake-generator: 'Unix Makefiles'
+            cmake-options: >-
+              -DCMAKE_BUILD_TYPE=Release
+              -DCMAKE_C_FLAGS="-Wall -Wextra"
+              -DCMAKE_VERBOSE_MAKEFILE=ON
+
+          - name: macos-cmake-shared
+            os: macos-latest
+            cc: clang
+            cxx: clang++
+            build-system: cmake
+            cmake-generator: 'Unix Makefiles'
+            cmake-options: >-
+              -DCMAKE_BUILD_TYPE=Release
+              -DBUILD_SHARED_LIBS=ON
+              -DCMAKE_C_FLAGS="-Wall -Wextra"
+              -DCMAKE_VERBOSE_MAKEFILE=ON
+
+          - name: windows-vs2022-x64
+            os: windows-latest
+            triplet: 'x64-windows-static'
+            build-system: cmake
+            cmake-generator: 'Visual Studio 17 2022'
+            cmake-options: >-
+              -DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreaded$<$<CONFIG:Debug>:Debug>
+              -DCMAKE_BUILD_TYPE=Release
+              -DVCPKG_TARGET_TRIPLET=x64-windows-static
+              -DCMAKE_TOOLCHAIN_FILE=c:/vcpkg/scripts/buildsystems/vcpkg.cmake
+
+          - name: windows-vs2022-x64-shared
+            os: windows-latest
+            triplet: 'x64-windows-static'
+            build-system: cmake
+            cmake-generator: 'Visual Studio 17 2022'
+            cmake-options: >-
+              -DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreaded$<$<CONFIG:Debug>:Debug>
+              -DBUILD_SHARED_LIBS=ON
+              -DBUILD_REGTEST=OFF
+              -DBUILD_EXAMPLES=OFF
+              -DINSTALL_PKGCONFIG_MODULE=OFF
+              -DCMAKE_BUILD_TYPE=Release
+              -DVCPKG_TARGET_TRIPLET=x64-windows-static
+              -DCMAKE_TOOLCHAIN_FILE=c:/vcpkg/scripts/buildsystems/vcpkg.cmake
+
+          - name: windows-vs2022-Win32
+            os: windows-latest
+            triplet: 'x86-windows-static'
+            build-system: cmake
+            cmake-generator: 'Visual Studio 17 2022'
+            cmake-options: >-
+              -DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreaded$<$<CONFIG:Debug>:Debug>
+              -DCMAKE_GENERATOR_PLATFORM=Win32
+              -DCMAKE_BUILD_TYPE=Release
+              -DVCPKG_TARGET_TRIPLET=x86-windows-static
+              -DCMAKE_TOOLCHAIN_FILE=c:/vcpkg/scripts/buildsystems/vcpkg.cmake
+
+          - name: windows-vs2022-Win32-shared
+            os: windows-latest
+            triplet: 'x86-windows-static'
+            build-system: cmake
+            cmake-generator: 'Visual Studio 17 2022'
+            cmake-options: >-
+              -DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreaded$<$<CONFIG:Debug>:Debug>
+              -DCMAKE_GENERATOR_PLATFORM=Win32
+              -DBUILD_SHARED_LIBS=ON
+              -DBUILD_REGTEST=OFF
+              -DBUILD_EXAMPLES=OFF
+              -DINSTALL_PKGCONFIG_MODULE=OFF
+              -DCPACK_PACKAGE_NAME=libsndfile
+              -DCMAKE_BUILD_TYPE=Release
+              -DVCPKG_TARGET_TRIPLET=x86-windows-static
+              -DCMAKE_TOOLCHAIN_FILE=c:/vcpkg/scripts/buildsystems/vcpkg.cmake
+
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install MacOS dependencies
+        if: startsWith(matrix.os,'macos')
+        run: |
+          brew install automake autogen speex mpg123
+
+      - name: Install Linux dependencies
+        if: startsWith(matrix.os,'ubuntu')
+        run: sudo apt-get update -y && sudo apt-get install -y autogen ninja-build libogg-dev libvorbis-dev libflac-dev libopus-dev libasound2-dev libsqlite3-dev libspeex-dev libmp3lame-dev libmpg123-dev
+
+      - name: Setup NuGet Credentials
+        env:
+          VCPKG_BINARY_SOURCES: 'clear;nuget,GitHub,readwrite'
+        if: startsWith(matrix.os,'windows')
+        shell: 'bash'
+        run: >
+          `vcpkg fetch nuget | tail -n 1`
+          sources add
+          -source "https://nuget.pkg.github.com/libsndfile/index.json"
+          -storepasswordincleartext
+          -name "GitHub"
+          -username "evpobr"
+          -password "${{ secrets.GITHUB_TOKEN }}"
+
+      - name: Configure, build and test with Autotools
+        env:
+          CC: ${{ matrix.cc }}
+          CXX: ${{ matrix.cxx }}
+        if: startsWith(matrix.build-system,'autotools')
+        run: |
+          autoreconf -vif
+          if [[ "${CC}" == "clang" ]]; then
+            ./configure --enable-werror && make distcheck
+          else
+            Scripts/asan-configure.sh --enable-werror && make distcheck
+          fi
+
+      - name: Configure, build and test with CMake
+        env:
+          CC: ${{ matrix.cc }}
+          CXX: ${{ matrix.cxx }}
+          VCPKG_BINARY_SOURCES: 'clear;nuget,GitHub,readwrite'
+        if: startsWith(matrix.build-system,'cmake')
+        run: |
+          mkdir build
+          cd build
+          cmake .. -G "${{matrix.cmake-generator}}" ${{matrix.cmake-options}}
+          cmake --build . --config Release
+          ctest
+
+      - name: Configure, build and test with OSSFuzz
+        env:
+          CC: ${{ matrix.cc }}
+          CXX: ${{ matrix.cxx }}
+        if: startsWith(matrix.build-system,'ossfuzz')
+        run: |
+          ./ossfuzz/ci_oss.sh

extern/libsndfile-modified/.github/workflows/cifuzz.yml

@@ -0,0 +1,26 @@
+name: CIFuzz
+on: [pull_request]
+jobs:
+  Fuzzing:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Build Fuzzers
+      id: build
+      uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
+      with:
+        oss-fuzz-project-name: 'libsndfile'
+        dry-run: false
+        language: c
+    - name: Run Fuzzers
+      uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
+      with:
+        oss-fuzz-project-name: 'libsndfile'
+        fuzz-seconds: 600
+        dry-run: false
+        language: c
+    - name: Upload Crash
+      uses: actions/upload-artifact@v1
+      if: failure() && steps.build.outcome == 'success'
+      with:
+        name: artifacts
+        path: ./out/artifacts

extern/libsndfile-modified/.gitignore

@@ -0,0 +1,146 @@
+*.user
+*.8svx
+*.a
+*.aif
+*.aifc
+*.aiff
+*.au
+*.bin
+*.caf
+*.dll
+*.exe
+*.flac
+*.la
+*.lib
+*.lo
+*.loT
+*.o
+*.oct
+*.oga
+*.ogg
+*.paf
+*.raw
+*.rifx
+*.sd2
+*.sds
+*.svx
+/*.so*
+*.w64
+*.wav
+*.wavex
+.DS_Store
+.deps
+.dirstamp
+.libs
+Hack
+Hack/sndfile-fuzzbomb
+INSTALL
+m4/libtool.m4
+m4/ltoptions.m4
+m4/ltsugar.m4
+m4/ltversion.m4
+m4/lt~obsolete.m4
+Makefile
+Makefile.in
+aclocal.m4
+autom4te.cache
+build-test-tarball.mk
+config.log
+config.status
+configure
+configure~
+doc/AUTHORS
+doc/ChangeLog
+doc/NEWS
+doc/README
+doc/libsndfile.css
+echo-install-dirs
+examples/generate
+examples/list_formats
+examples/make_sine
+examples/sfprocess
+examples/sndfile-loopify
+examples/sndfile-to-text
+examples/sndfilehandle
+include/sndfile.h
+libsndfile-*.tar.xz
+libsndfile-testsuite-*
+libsndfile.spec
+libtool
+man/sndfile-deinterleave.1
+man/sndfile-metadata-set.1
+programs/sndfile-cmp
+programs/sndfile-concat
+programs/sndfile-convert
+programs/sndfile-data-trim
+programs/sndfile-deinterleave
+programs/sndfile-info
+programs/sndfile-interleave
+programs/sndfile-jackplay
+programs/sndfile-metadata-get
+programs/sndfile-metadata-set
+programs/sndfile-play
+programs/sndfile-salvage
+regtest/sndfile-regtest
+sndfile.pc
+src/Ext
+src/G72x/g72x_test
+Symbols.darwin
+Symbols.gnu-binutils
+Symbols.os2
+Symbols.static
+src/config.h
+src/config.h.in
+src/config.h.in~
+src/libsndfile.so*
+libsndfile*.def
+src/stamp-h1
+src/test_endswap.c
+src/test_main
+src/version-metadata.rc
+tests/*_test
+tests/benchmark
+tests/benchmark.c
+tests/fix_this
+tests/floating_point_test.c
+tests/header_test.c
+tests/libsndfile-1.dll
+tests/pcm_test.c
+tests/pedantic-header-test.sh
+tests/pipe_test.c
+tests/rdwr_test.c
+tests/scale_clip_test.c
+tests/sfversion
+tests/test_wrapper.sh
+tests/utils.c
+tests/utils.h
+tests/write_read_test.c
+*.log
+*.trs
+.vs/
+packages/
+*.vcxproj.user
+*.VC.db
+*.VC.opendb
+Debug/
+Release/
+bin/
+obj/
+octave-workspace
+
+CMakeCache.txt
+CMakeFiles
+CMakeScripts
+Testing
+Makefile
+cmake_install.cmake
+install_manifest.txt
+compile_commands.json
+CTestTestfile.cmake
+CMakeSettings.json
+
+/*[Bb]uild*/
+
+/.vscode/
+/.vs/
+/out/

extern/libsndfile-modified/AUTHORS

@@ -0,0 +1,235 @@
+Original author:
+
+The main author of libsndfile is Erik de Castro Lopo <erikd@mega-nerd.com>
+apart from code in the following directories:
+
+ - src/GSM610 : Written by Jutta Degener <jutta@cs.tu-berlin.de> and Carsten
+   Bormann <cabo@cs.tu-berlin.de>. They should not be contacted in relation to
+   libsndfile or the GSM 6.10 code that is part of libsndfile. Their original
+   code can be found at:
+
+       http://kbs.cs.tu-berlin.de/~jutta/toast.html
+
+ - src/G72x : Released by Sun Microsystems, Inc. to the public domain. Minor
+   modifications were required to integrate these files into libsndfile. The
+   changes are listed in src/G72x/ChangeLog.
+
+Current maintainers:
+
+After the release of version 1.0.30, @erikd transferred the project to
+[the libsndfile team](https://github.com/libsndfile) consisting of:
+
+* Erik de Castro Lopo aka @erikd
+* David Seifert aka @SoapGentoo
+* Arthur Taylor aka @arthurt
+* @evpobr
+
+Current releaser is David Seifert:
+
+-----BEGIN PGP PUBLIC KEY BLOCK-----
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+Previous releasers:
+
+Version 1.0.29-1.0.30 - @evpobr.
+
+The public GPG key:
+
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+
+The public GPG key:
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+Others:
+
+    2013-03-07 Michael Pruett
+    2013-02-11 Chris Roberts c.roberts@csrfm.com
+    2012-03-17 IOhannes m zmoelnig
+    2013-02-21 Jan Starry
+    2012-01-20 Bodo
+    2011-06-23 Tim van der Molen
+    2010-12-01 Tim Blechmann
+    2010-10-04 Matti Nykyri
+    2010-09-17 Brian Lewis
+    2010-02-22 Robin Gareus
+    2010-01-07 Christian Weisgerber and Jacob Meuserto
+    2009-10-18 Olivier Tristan
+    2009-10-14, 2009-08-30 Uli Franke
+    2009-06-24, 2008-11-19, 2004-09-22, 2004-06-17, 2003-05-03, 2003-05-02 Conrad Parker
+    2009-05-22 Lennart Poettering
+    2008-07-03, 2006-10-22, 2006-10-18 Fons Adriaensen
+    2008-04-19 David Yeo
+    2008-01-20 Yair K.
+    2007-12-03 Robs
+    2007-07-12 Ed Schouten
+    2007-06-07 Trent Apted
+    2007-04-14, 2003-12-12 André Pang
+    2007-04-14 Reuben Thomas
+    2006-11-09 Jonathan Woithe
+    2006-03-26 Diego 'Flameeyes' Pettenò
+    2006-03-17 Paul Davis
+    2006-03-09 Jesse Chappell
+    2006-01-09, 2005-12-28 John ffitch
+    2005-09-21 David A. van Leeuwen
+    2005-08-15 Mo DeJong
+    2005-04-30 David Viens
+    2004-12-29 Steve Baker
+    2004-09-05 Denis Cote
+    2004-06-28 Stanko Juzbasic
+    2004-02-14 Frank Neumann
+    2003-08-15 Axel Röbel
+    2003-08-06 Peter Miller
+    2003-07-21 Tero Pelander
+    2003-02-10 Antoine Mathys
+    2002-12-30 Marek Peteraj

extern/libsndfile-modified/Building-for-Android.md

@@ -0,0 +1,46 @@
+# Building for Android
+
+Assuming the Android Ndk is installed at location `/path/to/toolchain`, building
+libsndfile for Android (arm-linux-androideabi) should be as simple as:
+```
+autoreconf -vif
+export ANDROID_TOOLCHAIN_HOME=/path/to/android/toolchain
+./Scripts/android-configure.sh
+make
+```
+The `Scripts/android-configure.sh` contains four of variables; `ANDROID_NDK_VER`,
+`ANDROID_GCC_VER`, `ANDROID_API_VER` and `ANDROID_TARGET` that can be overridden
+by setting them before the script is run.
+
+Since I (erikd), do almost zero Android development, I am happy accept patches
+for this documentation and script to improve its utility for real Android
+developers.
+
+---
+
+## Using CMake
+
+(Tested on Linux)
+
+For convenience, export the following variables:
+
+```
+export ANDROID_ABI=arm64-v8a
+export ANDROID_PLATFORM_API_LEVEL=29
+export NDK_ROOT=/path/to/android/ndk
+```
+
+Set `ANDROID_ABI`,  `ANDROID_PLATFORM_API_LEVEL`  according to your target system. Now cd into the libsndfile root directory, and run
+
+```
+cmake -S . -B build  -DCMAKE_TOOLCHAIN_FILE=$NDK_ROOT/build/cmake/android.toolchain.cmake -DANDROID_ABI=$ANDROID_ABI -DANDROID_PLATFORM=$ANDROID_PLATFORM_API_LEVEL
+```
+
+cd into `build` and run make
+
+```
+cd build
+make [-j <number of parallel jobs>]
+```
+
+This will build libsndfile for android.

extern/libsndfile-modified/CHANGELOG.md

@@ -0,0 +1,190 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [1.2.2] - 2023-08-13
+
+### Fixed
+
+* Fixed invalid regex in src/create_symbols_file.py
+* Fixed passing null pointer to printf %s in tests
+
+## [1.2.1] - 2023-08-12
+
+### Added
+
+* RISC OS support to `sndfile-play`, thanks @ccawley2011
+* Move semantics to `SndFileHandle` C++ class, thanks @haydaralaidrus
+
+### Fixed
+
+* Various typos, thanks @@uniontech-lilinjie
+* Handling of absolute `CMAKE_INSTALL_LIBDIR`/`CMAKE_INSTALL_INCLUDEDIR`, thanks
+  @Staudey (issue #908)
+* Add `localtime_s` support to `sndfile-metadata-set`, thanks @neheb (issue #907)
+* Linking with CMake against `Ogg::ogg`, thanks @FtZPetruska
+* CMake `mpg123` module handling bugs, thanks @FtZPetruska
+* CMake dependencies handling, thanks @FtZPetruska
+* Various `Ogg` & `Opus` format fixes, thanks @weiliang (issue #888)
+* Redefining `ssize_t` when building with Autotools, thanks @ccawley2011
+  (issue #934)
+* Bug related to incorrect `realloc` use, thanks @Halmoni100
+* Style errors, thanks to @arthurt
+* AIFF format related bugs, thanks to @arthurt
+* Reading of MP3 files without Xing or INFO headers, thanks @arthurt
+* Coding style of `src/mpeg_decode.c`, thanks @arthurt
+* Various documentation types, thanks @luzpaz
+* Intrinsics inclusion for MSVC and ARM64/ARM64EC, thanks @frysee
+* `sf_open_fd`() regression, thanks @brentr (PR #950)
+* WAV format related bug, thanks @magnus-nomono (issue #930)
+
+### Removed
+
+* Obsolete file `libsndfile.spec.in``, thanks @janstary
+
+## [1.2.0] - 2022-12-25
+
+### Fixed
+
+* Searching for LAME dependency with CMake build system (issue #821).
+* CMake build from Autotools tarball (issue #816).
+* Build on UWP platform (issue #824).
+* Fix signed integer overflow (issue #785).
+* Skipping large wav chunks on stdin (PR #819).
+
+### Removed
+
+* Maximum samplerate limit, thanks @drmpeg, @justacec (issue #850).
+  
+  In version 1.1.0, an artificial limit of 655350 Hz was created, but as it
+  turned out, this is not enough for some scenarios.
+
+## [1.1.0] - 2022-03-27
+
+### Added
+
+* MPEG Encode/Decode Support.
+
+  Uses libmpg123 for decode, liblame for encode. Encoding and decoding support
+  is independent of each other and is split into separate files. MPEG support
+  is generalized as subformats, `SF_FORMAT_MPEG_LAYER`(I,II,III) so that it
+  might be used by other containers (`MPEG1WAVEFORMAT` for example), but also
+  contains a major format `SF_FORMAT_MPEG` for 'mp3 files.'
+
+  Encoding Status:
+  * Layer III encoding
+  * ID3v1 writing
+  * ID3v2 writing
+  * Lame/Xing Tag writing
+  * Bitrate selection command
+  * VBR or CBR
+  
+  Decoding Status:
+  * Layers I/II/III decoding
+  * ID3v1 reading
+  * ID3v2 reading
+  * Seeking
+* New fuzzer for OSS-Fuzz, thanks @DavidKorczynski.
+* This `CHANGELOG.md`. All notable changes to this project will be documented in
+  this file. The old `NEWS` file has been renamed to `NEWS.OLD` and is no longer
+  updated.
+* Add support for decoding MPEG III Audio in WAV files.
+* `SECURITY.md` file to give people instructions for reporting security
+  vulnerabilities, thanks @zidingz.
+* Support for [Vcpkg manifest mode](https://vcpkg.readthedocs.io/en/latest/users/manifests/).
+
+  If you have problems with manifest mode, disable it with `VCPKG_MANIFEST_MODE`
+  switch.
+* [Export CMake targets from the build tree (PR #802)](https://cmake.org/cmake/help/latest/guide/importing-exporting/index.html#exporting-targets-from-the-build-tree)
+* CIFuzz fuzzer, thanks to @AdamKorcz (PR #796)
+
+### Changed
+
+* `SFC_SET_DITHER_ON_READ` and `SFC_SET_DITHER_ON_WRITE` enums comments in
+  public header, thanks @SmiVan (issue #677).
+* `ENABLE_SNDFILE_WINDOWS_PROTOTYPES` define is deprecated and not needed
+  anymore.
+
+  Previously, in order for the [`sf_wchar_open`()](http://libsndfile.github.io/libsndfile/api.html#open)
+  function to become available on   the Windows platform, it was required to
+  perform certain actions:
+
+  ```c
+  #include <windows.h>
+  #define ENABLE_SNDFILE_WINDOWS_PROTOTYPES 1
+  #including <sndfile.h>
+  ```
+
+  These steps are no longer required and the `sf_wchar_open`() function is
+  always available on the Windows platform.
+* Use UTF-8 as internal path encoding on Windows platform.
+
+  This is an internal change to unify and simplify the handling of file paths.
+
+  On the Windows platform, the file path is always converted to UTF-8 and
+  converted to UTF-16 only for calls to WinAPI functions.
+
+  The behavior of the functions for opening files on other platforms does not
+  change.
+* Switch to .xz over .bz2 for release tarballs.
+* Disable static builds using Autotools by default. If you want static
+  libraries, pass --enable-static to ./configure
+
+### Fixed
+
+* Typo in `docs/index.md`.
+* Typo in `programs/sndfile-convert.c`, thanks @fjl.
+* Memory leak in `caf_read_header`(), credit to OSS-Fuzz ([issue 30375](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30375)).
+* Stack overflow in `guess_file_type`(), thanks @bobsayshilol, credit to
+  OSS-Fuzz ([issue 29339](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=29339)).
+* Abort in fuzzer, thanks @bobsayshilol, credit to OSS-Fuzz
+  ([issue 26257](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26257)).
+* Infinite loop in `svx_read_header`(), thanks @bobsayshilol, credit to OSS-Fuzz
+  ([issue 25442](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25442)).
+* GCC and Clang pedantic warnings, thanks @bobsayshilol.
+* Normalisation issue when scaling floating point data to `int` in
+  `replace_read_f2i`(), thanks @bobsayshilol, (issue #702).
+* Missing samples when doing a partial read of Ogg file from index till the end
+  of file, thanks @arthurt (issue #643).
+* sndfile-salvage: Handle files > 4 GB on Windows OS
+* Undefined shift in `dyn_get_32bit`(), credit to OSS-Fuzz
+  ([issue 27366](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27366)).
+* Integer overflow in `nms_adpcm_update`(), credit to OSS-Fuzz
+  ([issue 25522](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25522)).
+* Integer overflow in `psf_log_printf`(), credit to OSS-Fuzz
+  ([issue 28441](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28441)),
+  ([issue 25624](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25624)).
+* ABI version incompatibility between Autotools and CMake build on Apple
+  platforms.
+
+  Now ABI must be compatible with Autotools builds. Note that this change
+  requires CMake >= 3.17 for building dylib on Apple platforms.
+
+* Fix build with Autotools + MinGW toolchain on Windows platform.
+
+  See https://github.com/msys2/MINGW-packages/issues/5803 for details.
+
+### Security
+
+* Heap buffer overflow in `wavlike_ima_decode_block`(), thanks @bobsayshilol,
+  credit to OSS-Fuzz ([issue 25530](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25530)).
+* Heap buffer overflow in `msadpcm_decode_block`(), thanks @bobsayshilol,
+  credit to OSS-Fuzz ([issue 26803](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26803)).
+* Heap buffer overflow in `psf_binheader_readf`(), thanks @bobsayshilol,
+  credit to OSS-Fuzz ([issue 26026](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26026)).
+* Index out of bounds in `psf_nms_adpcm_decode_block`(), credit to OSS-Fuzz
+  ([issue 25561](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25561)).
+* Heap buffer overflow in `flac_buffer_copy`(), thanks @yuawn,  @bobsayshilol.
+* Heap buffer overflow in `copyPredictorTo24`(), thanks @bobsayshilol,
+  credit to OSS-Fuzz ([issue 27503](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27503)).
+* Uninitialized variable in `psf_binheader_readf`(), thanks @shao-hua-li,
+  credit to OSS-Fuzz ([issue 25364](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25364)).
+
+[Unreleased]: https://github.com/libsndfile/libsndfile/compare/1.2.2...HEAD
+[1.2.2]: https://github.com/libsndfile/libsndfile/compare/1.2.1...1.2.2
+[1.2.1]: https://github.com/libsndfile/libsndfile/compare/1.2.0...1.2.1
+[1.2.0]: https://github.com/libsndfile/libsndfile/compare/1.1.0...1.2.0
+[1.1.0]: https://github.com/libsndfile/libsndfile/compare/1.0.31...1.1.0

extern/libsndfile-modified/CODEOWNERS

@@ -0,0 +1,14 @@
+# The owners of this repository. In order of suggestions as reviewers.
+*                           @evpobr @SoapGentoo @arthurt @erikd
+
+# Autotools
+configure.ac Makefile.am    @SoapGentoo @erikd
+
+# CMake
+CMakeLists.txt /cmake/      @evpobr
+
+# Ogg Opus format
+/src/ogg_opus.c             @arthurt
+
+# Documentation
+/doc/ /man/                 @evpobr

extern/libsndfile-modified/CONTRIBUTING.md

@@ -0,0 +1,49 @@
+# Contributing
+
+## Submitting Issues
+
+* If your issue is that libsndfile is not able to or is incorrectly reading one
+  of your files, please include the output of the `sndfile-info` program run
+  against the file.
+* If you are writing a program that uses libsndfile and you think there is a bug
+  in libsndfile, reduce your program to the minimal example, make sure you compile
+  it with warnings on (for GCC I would recommend at least `-Wall -Wextra`) and that
+  your program is warning free, and that is is error free when run under Valgrind
+  or compiled with AddressSanitizer.
+
+## Submitting Patches
+
+* Patches should pass all existing tests
+* Patches should pass all pre-commit hook tests.
+* Patches should always be submitted via a either Github "pull request" or a
+  via emailed patches created using "git format-patch".
+* Patches for new features should include tests and documentation.
+* Commit messages should follow the ["How to Write a Git Commit Message"](https://chris.beams.io/posts/git-commit/) guide:
+  1. Separate subject from body with a blank line
+  2. Limit the subject line to 50 characters
+  3. Capitalize the subject line
+  4. Do not end the subject line with a period
+  5. Use the imperative mood in the subject line
+  6. Wrap the body at 72 characters
+  7. Use the body to explain what and why vs. how
+
+  Additional rule: the commit message may contain a prefix. The prefix must
+  contain the name of the feature or source file related to the commit and must
+  end with a colon followed by the message body.
+
+  Examples of good commit messages:
+  1. Fix typo
+  2. Update CHANGELOG.md
+  3. Add ACT file format support
+  4. ogg_vorbis: Fix granule position when seeking Vorbis streams
+
+  Examples of bad commit messages:
+  1. Fixed bug (rule 5)
+  2. update docs (rule 3)
+  3. Add very cool feature. (rule 4)
+
+* Patches to fix bugs should either pass all tests, or modify the tests in some
+  sane way.
+* When a new feature is added for a particular file format and that feature
+  makes sense for other formats, then it should also be implemented for one
+  or two of the other formats.

extern/libsndfile-modified/COPYING

@@ -0,0 +1,503 @@
+                  GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 2.1, February 1999
+
+ Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+     59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Everyone is permitted to copy and distribute verbatim copies
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+
+[This is the first released version of the Lesser GPL.  It also counts
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+ the version number 2.1.]
+
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+conditions either of that version or of any later version published by
+the Free Software Foundation.  If the Library does not specify a
+license version number, you may choose any version ever published by
+the Free Software Foundation.
+
+  14. If you wish to incorporate parts of the Library into other free
+programs whose distribution conditions are incompatible with these,
+write to the author to ask for permission.  For software which is
+copyrighted by the Free Software Foundation, write to the Free
+Software Foundation; we sometimes make exceptions for this.  Our
+decision will be guided by the two goals of preserving the free status
+of all derivatives of our free software and of promoting the sharing
+and reuse of software generally.
+
+                            NO WARRANTY
+
+  15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
+WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
+EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
+OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
+KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
+LIBRARY IS WITH YOU.  SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
+THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
+AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
+FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
+CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
+LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
+RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
+FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
+SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+           How to Apply These Terms to Your New Libraries
+
+  If you develop a new library, and you want it to be of the greatest
+possible use to the public, we recommend making it free software that
+everyone can redistribute and change.  You can do so by permitting
+redistribution under these terms (or, alternatively, under the terms of the
+ordinary General Public License).
+
+  To apply these terms, attach the following notices to the library.  It is
+safest to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the library's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+Also add information on how to contact you by electronic and paper mail.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the library, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the
+  library `Frob' (a library for tweaking knobs) written by James Random Hacker.
+
+  <signature of Ty Coon>, 1 April 1990
+  Ty Coon, President of Vice
+
+That's all there is to it!
+

extern/libsndfile-modified/ChangeLog

@@ -0,0 +1,3 @@
+For changes, please see the git commit history on github:
+
+  https://github.com/libsndfile/libsndfile/commits/master

extern/libsndfile-modified/MODIFIED.md

@@ -0,0 +1,6 @@
+NOTICE: THIS IS A MODIFIED VERSION OF LIBSNDFILE WHICH FIXES COMPILATION WHEN USING CMAKE 4.0.
+
+I can't believe I had to desubmodulize this just for a ONE CHARACTER change.
+no, I couldn't use Git master as they've dropped support for early 3.x CMake.
+
+this is commit 72f6af15e8f85157bd622ed45b979025828b7001 (tag 1.2.2).

extern/libsndfile-modified/Makefile.am

@@ -0,0 +1,546 @@
+## Process this file with automake to produce Makefile.in
+
+AM_CPPFLAGS = -I$(top_srcdir)/src -I$(top_srcdir)/include -I$(top_builddir)/include $(OS_SPECIFIC_CFLAGS)
+
+DISTCHECK_CONFIGURE_FLAGS = --enable-werror
+
+CLEANFILES = programs/*.wav octave-workspace
+
+if FULL_SUITE
+if BUILD_OCTAVE_MOD
+SUBDIRS = Octave
+endif
+endif
+
+EXTRA_DIST = sndfile.pc.in Scripts/android-configure.sh \
+	NEWS.OLD CHANGELOG.md Scripts/linux-to-win-cross-configure.sh \
+	CMakeLists.txt $(cmake_files) Win32 SECURITY.md
+
+cmake_files = cmake/ClipMode.cmake cmake/FindFLAC.cmake \
+	cmake/CMakeAutoGen.cmake cmake/CMakeAutoGenScript.cmake \
+	cmake/FindOgg.cmake cmake/FindVorbis.cmake cmake/FindSndio.cmake \
+	cmake/FindSpeex.cmake cmake/sqlite/FindSQLite3.cmake \
+	cmake/SndFileChecks.cmake cmake/TestInline.cmake \
+	cmake/TestLargeFiles.cmake cmake/TestInline.c.in \
+	cmake/FindOpus.cmake cmake/SndFileConfig.cmake.in \
+	cmake/CheckCPUArch.cmake cmake/CheckCPUArch.c.in \
+	cmake/Findmp3lame.cmake cmake/Findmpg123.cmake \
+	cmake/SetupABIVersions.cmake
+
+pkgconfig_DATA = sndfile.pc
+
+noinst_PROGRAMS =
+
+#===============================================================================
+
+test: check
+
+# Need this target to force building of test programs.
+checkprograms: $(check_PROGRAMS)
+
+########
+# src/ #
+########
+
+BUILT_SOURCES = src/test_endswap.c
+
+SYMBOL_FILES = src/Symbols.gnu-binutils src/Symbols.darwin src/libsndfile-1.def src/Symbols.os2 src/Symbols.static
+
+EXTRA_DIST += src/config.h.in src/test_endswap.tpl src/test_endswap.def \
+	$(SYMBOL_FILES) src/create_symbols_file.py src/binheader_writef_check.py \
+	src/GSM610/README src/GSM610/COPYRIGHT src/GSM610/ChangeLog \
+	src/G72x/README src/G72x/README.original src/G72x/ChangeLog \
+	src/make-static-lib-hidden-privates.sh \
+	src/config.h.cmake
+
+if USE_WIN_VERSION_FILE
+WIN_VERSION_FILE = src/version-metadata.rc
+else
+WIN_VERSION_FILE =
+endif
+
+#===============================================================================
+
+lib_LTLIBRARIES = src/libsndfile.la
+include_HEADERS = include/sndfile.h include/sndfile.hh
+src_libsndfile_la_CFLAGS = $(EXTERNAL_XIPH_CFLAGS) $(MPEG_CFLAGS)
+# MinGW requires -no-undefined if a DLL is to be built.
+src_libsndfile_la_LDFLAGS = -no-undefined -version-info $(SHARED_VERSION_INFO) $(SHLIB_VERSION_ARG)
+src_libsndfile_la_SOURCES = src/sndfile.c src/aiff.c src/au.c src/avr.c src/caf.c src/dwd.c src/flac.c src/g72x.c src/htk.c src/ircam.c \
+	src/macos.c src/mat4.c src/mat5.c src/nist.c src/paf.c src/pvf.c src/raw.c src/rx2.c src/sd2.c \
+	src/sds.c src/svx.c src/txw.c src/voc.c src/wve.c src/w64.c src/wavlike.c src/wav.c src/xi.c src/mpc2k.c src/rf64.c \
+	src/ogg.c src/ogg.h src/ogg_vorbis.c src/ogg_speex.c src/ogg_pcm.c src/ogg_opus.c src/ogg_vcomment.c src/ogg_vcomment.h \
+	src/common.h src/sfconfig.h src/sfendian.h src/wavlike.h src/sf_unistd.h src/chanmap.h src/mpeg.c
+nodist_src_libsndfile_la_SOURCES = $(nodist_include_HEADERS)
+src_libsndfile_la_LIBADD = src/GSM610/libgsm.la src/G72x/libg72x.la src/ALAC/libalac.la \
+	src/libcommon.la $(EXTERNAL_XIPH_LIBS) -lm $(MPEG_LIBS)
+EXTRA_src_libsndfile_la_DEPENDENCIES = $(SYMBOL_FILES)
+
+noinst_LTLIBRARIES = src/libcommon.la
+src_libcommon_la_CFLAGS = $(EXTERNAL_XIPH_CFLAGS) $(MPEG_CFLAGS)
+src_libcommon_la_SOURCES = src/common.c src/file_io.c src/command.c src/pcm.c src/ulaw.c src/alaw.c \
+	src/float32.c src/double64.c src/ima_adpcm.c src/ms_adpcm.c src/gsm610.c src/dwvw.c src/vox_adpcm.c \
+	src/interleave.c src/strings.c src/dither.c src/cart.c src/broadcast.c src/audio_detect.c \
+	src/ima_oki_adpcm.c src/ima_oki_adpcm.h src/alac.c src/chunk.c src/chanmap.c \
+	src/windows.c src/id3.c src/id3.h src/nms_adpcm.c src/mpeg_decode.c src/mpeg_l3_encode.c src/mpeg.h $(WIN_VERSION_FILE)
+
+check_PROGRAMS = src/test_main
+src_test_main_SOURCES = src/test_main.c src/test_main.h src/test_conversions.c src/test_float.c src/test_endswap.c \
+	src/test_audio_detect.c src/test_log_printf.c src/test_file_io.c src/test_ima_oki_adpcm.c \
+	src/test_strncpy_crlf.c src/test_broadcast_var.c src/test_cart_var.c \
+	src/test_binheader_writef.c src/test_nms_adpcm.c
+src_test_main_LDADD = src/libcommon.la
+
+##############
+# src/GSM610 #
+##############
+
+noinst_LTLIBRARIES += src/GSM610/libgsm.la
+src_GSM610_libgsm_la_SOURCES = src/GSM610/config.h src/GSM610/gsm.h src/GSM610/gsm610_priv.h \
+	src/GSM610/add.c src/GSM610/code.c src/GSM610/decode.c src/GSM610/gsm_create.c \
+	src/GSM610/gsm_decode.c src/GSM610/gsm_destroy.c src/GSM610/gsm_encode.c \
+	src/GSM610/gsm_option.c src/GSM610/long_term.c src/GSM610/lpc.c src/GSM610/preprocess.c \
+	src/GSM610/rpe.c src/GSM610/short_term.c src/GSM610/table.c
+
+############
+# src/G72x #
+############
+
+noinst_LTLIBRARIES += src/G72x/libg72x.la
+src_G72x_libg72x_la_SOURCES = src/G72x/g72x.h src/G72x/g72x_priv.h \
+	src/G72x/g721.c src/G72x/g723_16.c src/G72x/g723_24.c src/G72x/g723_40.c src/G72x/g72x.c
+
+check_PROGRAMS += src/G72x/g72x_test
+src_G72x_g72x_test_SOURCES = src/G72x/g72x_test.c
+src_G72x_g72x_test_LDADD = src/G72x/libg72x.la
+
+############
+# src/ALAC #
+############
+
+noinst_LTLIBRARIES += src/ALAC/libalac.la
+src_ALAC_libalac_la_SOURCES = src/ALAC/ALACAudioTypes.h src/ALAC/ALACBitUtilities.h \
+	src/ALAC/EndianPortable.h src/ALAC/aglib.h src/ALAC/dplib.h src/ALAC/matrixlib.h \
+	src/ALAC/alac_codec.h src/ALAC/shift.h \
+	src/ALAC/ALACBitUtilities.c src/ALAC/ag_dec.c \
+	src/ALAC/ag_enc.c src/ALAC/dp_dec.c src/ALAC/dp_enc.c src/ALAC/matrix_dec.c \
+	src/ALAC/matrix_enc.c src/ALAC/alac_decoder.c src/ALAC/alac_encoder.c
+
+#===============================================================================
+# Generate an OS specific Symbols files. This is done when the author
+# builds the distribution tarball. There should be not need for the
+# end user to create these files.
+
+# "$<" cannot portably be used in the recipe across Make implementations
+# https://www.gnu.org/software/autoconf/manual/autoconf.html#g_t_0024_003c-in-Ordinary-Make-Rules
+SYMBOL_SCRIPT = $(top_srcdir)/src/create_symbols_file.py
+
+src/Symbols.gnu-binutils: $(SYMBOL_SCRIPT)
+	$(PYTHON) $(SYMBOL_SCRIPT) linux $(ABI_VERSION) > $(top_srcdir)/$@
+
+src/Symbols.darwin: $(SYMBOL_SCRIPT)
+	$(PYTHON) $(SYMBOL_SCRIPT) darwin $(ABI_VERSION) > $(top_srcdir)/$@
+
+src/libsndfile-1.def: $(SYMBOL_SCRIPT)
+	$(PYTHON) $(SYMBOL_SCRIPT) win32 $(ABI_VERSION) > $(top_srcdir)/$@
+
+src/Symbols.os2: $(SYMBOL_SCRIPT)
+	$(PYTHON) $(SYMBOL_SCRIPT) os2 $(ABI_VERSION) > $(top_srcdir)/$@
+
+src/Symbols.static: $(SYMBOL_SCRIPT)
+	$(PYTHON) $(SYMBOL_SCRIPT) static $(ABI_VERSION) > $(top_srcdir)/$@
+
+#===============================================================================
+# Building windows resource files (if needed).
+
+.rc.lo:
+	$(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --tag=RC --mode=compile $(RC) $(RCFLAGS) $< -o $@
+
+#===============================================================================
+# Disable autoheader.
+AUTOHEADER=echo
+
+########
+# docs/ #
+########
+
+if FULL_SUITE
+dist_doc_DATA = docs/index.md docs/libsndfile.jpg docs/libsndfile.css docs/print.css docs/api.md \
+	docs/command.md docs/bugs.md docs/formats.md docs/sndfile_info.md docs/new_file_type_howto.md \
+	docs/win32.md docs/FAQ.md docs/lists.md docs/embedded_files.md docs/octave.md \
+	docs/tutorial.md
+endif
+
+#############
+# examples/ #
+#############
+
+check_PROGRAMS += examples/make_sine examples/sfprocess examples/list_formats examples/generate examples/sndfilehandle \
+	examples/sndfile-to-text examples/sndfile-loopify
+
+examples_sndfile_to_text_SOURCES = examples/sndfile-to-text.c
+examples_sndfile_to_text_LDADD = src/libsndfile.la
+
+examples_sndfile_loopify_SOURCES = examples/sndfile-loopify.c
+examples_sndfile_loopify_LDADD = src/libsndfile.la
+
+examples_make_sine_SOURCES = examples/make_sine.c
+examples_make_sine_LDADD = src/libsndfile.la
+
+examples_sfprocess_SOURCES = examples/sfprocess.c
+examples_sfprocess_LDADD = src/libsndfile.la
+
+examples_list_formats_SOURCES = examples/list_formats.c
+examples_list_formats_LDADD = src/libsndfile.la
+
+examples_generate_SOURCES = examples/generate.c
+examples_generate_LDADD = src/libsndfile.la
+
+examples_sndfilehandle_SOURCES = examples/sndfilehandle.cc
+examples_sndfilehandle_LDADD = src/libsndfile.la
+
+##########
+# tests/ #
+##########
+
+TESTS_ENVIRONMENT = $(SHELL) tests/test_wrapper.sh
+
+if ENABLE_TEST_COVERAGE
+CPP_TEST =
+else
+CPP_TEST = tests/cpp_test
+endif
+
+TESTS = tests/pedantic-header-test.sh
+
+check_PROGRAMS += tests/sfversion tests/floating_point_test tests/write_read_test \
+	tests/lossy_comp_test tests/error_test tests/ulaw_test tests/alaw_test tests/dwvw_test \
+	tests/peak_chunk_test tests/command_test tests/stdio_test \
+	tests/pcm_test tests/headerless_test tests/pipe_test tests/header_test tests/misc_test \
+	tests/raw_test tests/string_test tests/multi_file_test tests/chunk_test \
+	tests/scale_clip_test tests/win32_test tests/aiff_rw_test tests/virtual_io_test \
+	tests/locale_test tests/win32_ordinal_test tests/ogg_test tests/compression_size_test \
+	tests/checksum_test tests/external_libs_test tests/rdwr_test tests/format_check_test $(CPP_TEST) \
+	tests/channel_test tests/long_read_write_test tests/stdin_test tests/stdout_test \
+	tests/dither_test tests/fix_this tests/largefile_test tests/benchmark tests/ogg_opus_test \
+	tests/mpeg_test
+
+BUILT_SOURCES += \
+	tests/write_read_test.c \
+	tests/pcm_test.c \
+	tests/header_test.c \
+	tests/utils.c \
+	tests/scale_clip_test.c \
+	tests/pipe_test.c \
+	tests/rdwr_test.c \
+	tests/floating_point_test.c \
+	tests/benchmark.c
+
+EXTRA_DIST += $(BUILT_SOURCES) \
+	tests/write_read_test.tpl     tests/write_read_test.def \
+	tests/pcm_test.tpl            tests/pcm_test.def \
+	tests/header_test.tpl         tests/header_test.def \
+	tests/utils.tpl               tests/utils.def \
+	tests/scale_clip_test.tpl     tests/scale_clip_test.def \
+	tests/pipe_test.tpl           tests/pipe_test.def \
+	tests/rdwr_test.tpl           tests/rdwr_test.def \
+	tests/floating_point_test.tpl tests/floating_point_test.def \
+	tests/benchmark.tpl           tests/benchmark.def
+
+# If we're cross compiling from Linux to Windows and running the test suite
+# under Wine, we need a symbolic link to the generated libsndfile DLL.
+
+if LINUX_MINGW_CROSS_TEST
+
+$(check_PROGRAMS) : libsndfile-1.dll
+
+libsndfile-1.dll :
+	$(LN_S) src/.libs/$@ $@
+
+clean-local :
+	-rm -f libsndfile-1.dll
+
+endif
+
+#===============================================================================
+
+tests_sfversion_SOURCES = tests/sfversion.c
+tests_sfversion_LDADD = src/libsndfile.la
+
+tests_write_read_test_SOURCES = tests/utils.c tests/generate.c tests/generate.h tests/write_read_test.c tests/utils.h
+tests_write_read_test_LDADD = src/libsndfile.la
+
+tests_lossy_comp_test_SOURCES = tests/utils.c tests/lossy_comp_test.c tests/utils.h
+tests_lossy_comp_test_LDADD = src/libsndfile.la
+
+tests_fix_this_SOURCES = tests/utils.c tests/fix_this.c tests/utils.h
+tests_fix_this_LDADD = src/libsndfile.la
+
+tests_error_test_SOURCES = tests/error_test.c tests/utils.c tests/utils.h
+tests_error_test_LDADD = src/libsndfile.la
+
+tests_ulaw_test_SOURCES = tests/utils.c tests/ulaw_test.c tests/utils.h
+tests_ulaw_test_LDADD = src/libsndfile.la
+
+tests_alaw_test_SOURCES = tests/utils.c tests/alaw_test.c tests/utils.h
+tests_alaw_test_LDADD = src/libsndfile.la
+
+tests_aiff_rw_test_SOURCES = tests/utils.c tests/aiff_rw_test.c tests/utils.h
+tests_aiff_rw_test_LDADD = src/libsndfile.la
+
+tests_command_test_SOURCES = tests/command_test.c tests/utils.c tests/utils.h
+tests_command_test_LDADD = src/libsndfile.la
+
+tests_locale_test_SOURCES = tests/locale_test.c tests/utils.c tests/utils.h
+tests_locale_test_LDADD = src/libsndfile.la
+
+tests_largefile_test_SOURCES = tests/largefile_test.c tests/utils.c tests/utils.h
+tests_largefile_test_LDADD = src/libsndfile.la
+
+tests_pcm_test_SOURCES = tests/pcm_test.c tests/utils.c tests/utils.h
+tests_pcm_test_LDADD = src/libsndfile.la
+
+tests_headerless_test_SOURCES = tests/utils.c tests/headerless_test.c tests/utils.h
+tests_headerless_test_LDADD = src/libsndfile.la
+
+tests_stdin_test_SOURCES = tests/stdin_test.c tests/utils.c tests/utils.h
+tests_stdin_test_LDADD = src/libsndfile.la
+
+tests_stdout_test_SOURCES = tests/stdout_test.c tests/utils.h
+tests_stdout_test_LDADD = src/libsndfile.la
+
+tests_stdio_test_SOURCES = tests/stdio_test.c tests/utils.c tests/utils.h
+tests_stdio_test_LDADD = src/libsndfile.la
+
+tests_pipe_test_SOURCES = tests/pipe_test.c tests/utils.c tests/utils.h
+tests_pipe_test_LDADD = src/libsndfile.la
+
+tests_benchmark_SOURCES = tests/benchmark.c tests/utils.h
+tests_benchmark_LDADD = src/libsndfile.la
+
+tests_header_test_SOURCES = tests/header_test.c tests/utils.c tests/utils.h
+tests_header_test_LDADD = src/libsndfile.la
+
+tests_misc_test_SOURCES = tests/misc_test.c tests/utils.c tests/utils.h
+tests_misc_test_LDADD = src/libsndfile.la
+
+tests_raw_test_SOURCES = tests/raw_test.c tests/utils.c tests/utils.h
+tests_raw_test_LDADD = src/libsndfile.la
+
+tests_string_test_SOURCES = tests/string_test.c tests/utils.c tests/utils.h
+tests_string_test_LDADD = src/libsndfile.la
+
+tests_dither_test_SOURCES = tests/dither_test.c tests/utils.c tests/utils.h
+tests_dither_test_LDADD = src/libsndfile.la
+
+tests_chunk_test_SOURCES = tests/chunk_test.c tests/utils.c tests/utils.h
+tests_chunk_test_LDADD = src/libsndfile.la
+
+tests_multi_file_test_SOURCES = tests/multi_file_test.c tests/utils.c tests/utils.h
+tests_multi_file_test_LDADD = src/libsndfile.la
+
+tests_virtual_io_test_SOURCES = tests/virtual_io_test.c tests/utils.c tests/utils.h
+tests_virtual_io_test_LDADD = src/libsndfile.la
+
+tests_ogg_test_SOURCES = tests/ogg_test.c tests/utils.c tests/utils.h
+tests_ogg_test_LDADD = src/libsndfile.la
+
+tests_ogg_opus_test_SOURCES = tests/ogg_opus_test.c tests/utils.c tests/utils.h
+tests_ogg_opus_test_LDADD = src/libsndfile.la
+
+tests_compression_size_test_SOURCES = tests/compression_size_test.c tests/utils.c tests/utils.h tests/dft_cmp.h
+tests_compression_size_test_LDADD = src/libsndfile.la
+
+tests_rdwr_test_SOURCES = tests/rdwr_test.c tests/utils.c tests/utils.h
+tests_rdwr_test_LDADD = src/libsndfile.la
+
+tests_win32_test_SOURCES = tests/win32_test.c
+# Link lib here so that generating the testsuite tarball works correctly.
+tests_win32_test_LDADD = src/libsndfile.la
+
+tests_win32_ordinal_test_SOURCES = tests/win32_ordinal_test.c tests/utils.c tests/utils.h
+tests_win32_ordinal_test_LDADD = src/libsndfile.la
+
+tests_external_libs_test_SOURCES = tests/external_libs_test.c tests/utils.c tests/utils.h
+tests_external_libs_test_LDADD = src/libsndfile.la
+
+tests_format_check_test_SOURCES = tests/format_check_test.c tests/utils.c tests/utils.h
+tests_format_check_test_LDADD = src/libsndfile.la
+
+tests_channel_test_SOURCES = tests/channel_test.c tests/utils.c tests/utils.h
+tests_channel_test_LDADD = src/libsndfile.la
+
+tests_long_read_write_test_SOURCES = tests/long_read_write_test.c tests/utils.c tests/utils.h tests/dft_cmp.h
+tests_long_read_write_test_LDADD = src/libsndfile.la
+
+tests_cpp_test_SOURCES = tests/cpp_test.cc tests/utils.c tests/utils.h
+tests_cpp_test_LDADD = src/libsndfile.la
+
+tests_checksum_test_SOURCES = tests/checksum_test.c tests/utils.c tests/utils.h
+tests_checksum_test_LDADD = src/libsndfile.la
+
+tests_mpeg_test_SOURCES = tests/mpeg_test.c tests/utils.c tests/utils.h
+tests_mpeg_test_LDADD = src/libsndfile.la
+
+# Lite remove start
+tests_dwvw_test_SOURCES = tests/dwvw_test.c tests/utils.c tests/utils.h
+tests_dwvw_test_LDADD = src/libsndfile.la
+
+tests_floating_point_test_SOURCES = tests/utils.c tests/utils.h tests/dft_cmp.c tests/dft_cmp.h tests/floating_point_test.c
+tests_floating_point_test_LDADD = src/libsndfile.la
+
+tests_peak_chunk_test_SOURCES = tests/peak_chunk_test.c tests/utils.c tests/utils.h
+tests_peak_chunk_test_LDADD = src/libsndfile.la
+
+tests_scale_clip_test_SOURCES = tests/scale_clip_test.c tests/utils.c tests/utils.h
+tests_scale_clip_test_LDADD = src/libsndfile.la
+# Lite remove end
+
+#===============================================================================
+# Autogen generated sources.
+# Coerce the multiple inputs -> multiple outputs problem
+# into suffix rules by "linearising" the dependency graph.
+# Yes, this sucks, but GNU make patterns aren't portable,
+# see also https://github.com/libsndfile/libsndfile/issues/369
+
+SUFFIXES = .tpl .def
+
+.tpl.def:
+	touch $@
+
+# unconditionally running touch on the .def
+# files is necessary to keep all timestamps
+# consistent, in order to prevent stale files
+# from calling autogen in tarball releases.
+.def.c:
+	$(MAKE) $(AM_MAKEFLAGS) $<
+	cd $(top_srcdir)/$(@D) && autogen --writable $(<F)
+
+# recommended Automake way for multi-output targets:
+# https://www.gnu.org/software/automake/manual/html_node/Multiple-Outputs.html
+tests/utils.h : tests/utils.c
+	@if test -f $@; then :; else \
+	  cd $(top_srcdir) && \
+	  rm -f tests/utils.c && \
+	  $(MAKE) $(AM_MAKEFLAGS) tests/utils.c; \
+	fi
+
+########
+# man/ #
+########
+
+if FULL_SUITE
+dist_man_MANS = man/sndfile-info.1 man/sndfile-play.1 man/sndfile-convert.1 man/sndfile-cmp.1 \
+	man/sndfile-metadata-get.1 man/sndfile-metadata-set.1 man/sndfile-concat.1 \
+	man/sndfile-interleave.1 man/sndfile-deinterleave.1 man/sndfile-salvage.1
+
+# Same manpage for both programs.
+man/sndfile-metadata-set.1: man/sndfile-metadata-get.1
+	-rm -f $@
+	cd $(top_srcdir)/man && $(LN_S) sndfile-metadata-get.1 sndfile-metadata-set.1
+
+man/sndfile-deinterleave.1: man/sndfile-interleave.1
+	-rm -f $@
+	cd $(top_srcdir)/man && $(LN_S) sndfile-interleave.1 sndfile-deinterleave.1
+
+############
+# ossfuzz/ #
+############
+
+if USE_OSSFUZZ_FLAG
+FUZZ_FLAG = $(LIB_FUZZING_ENGINE)
+FUZZ_LDADD =
+else
+if USE_OSSFUZZ_STATIC
+FUZZ_LDADD = $(LIB_FUZZING_ENGINE)
+FUZZ_FLAG =
+else
+FUZZ_LDADD = libstandaloneengine.la
+FUZZ_FLAG =
+endif
+endif
+
+if USE_OSSFUZZERS
+noinst_PROGRAMS += \
+	ossfuzz/sndfile_fuzzer \
+	ossfuzz/sndfile_alt_fuzzer
+
+noinst_LTLIBRARIES += \
+	ossfuzz/libstandaloneengine.la
+endif
+
+ossfuzz_sndfile_fuzzer_SOURCES = ossfuzz/sndfile_fuzzer.cc
+ossfuzz_sndfile_fuzzer_CXXFLAGS = $(AM_CXXFLAGS) $(FUZZ_FLAG)
+ossfuzz_sndfile_fuzzer_LDFLAGS = $(AM_LDFLAGS) -static
+ossfuzz_sndfile_fuzzer_LDADD = src/libsndfile.la $(FUZZ_LDADD)
+
+ossfuzz_sndfile_alt_fuzzer_SOURCES = ossfuzz/sndfile_alt_fuzzer.cc
+ossfuzz_sndfile_alt_fuzzer_CXXFLAGS = $(AM_CXXFLAGS) $(FUZZ_FLAG)
+ossfuzz_sndfile_alt_fuzzer_LDFLAGS = $(AM_LDFLAGS) -static
+ossfuzz_sndfile_alt_fuzzer_LDADD = src/libsndfile.la $(FUZZ_LDADD)
+
+ossfuzz_libstandaloneengine_la_SOURCES = ossfuzz/standaloneengine.cc ossfuzz/testinput.h
+ossfuzz_libstandaloneengine_la_CXXFLAGS = $(AM_CXXFLAGS)
+
+#############
+# programs/ #
+#############
+
+bin_PROGRAMS = programs/sndfile-info programs/sndfile-play programs/sndfile-convert programs/sndfile-cmp \
+	programs/sndfile-metadata-set programs/sndfile-metadata-get programs/sndfile-interleave \
+	programs/sndfile-deinterleave programs/sndfile-concat programs/sndfile-salvage
+endif
+
+# required by test-sndfile-metadata-set.py
+check_PROGRAMS += programs/sndfile-metadata-set programs/sndfile-metadata-get
+
+EXTRA_DIST += programs/test-sndfile-metadata-set.py
+
+programs_sndfile_info_SOURCES = programs/sndfile-info.c programs/common.c programs/common.h
+programs_sndfile_info_LDADD = src/libsndfile.la
+
+programs_sndfile_play_SOURCES = programs/sndfile-play.c programs/common.c programs/common.h
+programs_sndfile_play_LDADD = src/libsndfile.la $(OS_SPECIFIC_LINKS) $(ALSA_LIBS) $(SNDIO_LIBS)
+
+programs_sndfile_convert_SOURCES = programs/sndfile-convert.c programs/common.c programs/common.h
+programs_sndfile_convert_LDADD = src/libsndfile.la
+
+programs_sndfile_cmp_SOURCES = programs/sndfile-cmp.c programs/common.c programs/common.h
+programs_sndfile_cmp_LDADD = src/libsndfile.la
+
+programs_sndfile_metadata_set_SOURCES = programs/sndfile-metadata-set.c programs/common.c programs/common.h
+programs_sndfile_metadata_set_LDADD = src/libsndfile.la
+
+programs_sndfile_metadata_get_SOURCES = programs/sndfile-metadata-get.c programs/common.c programs/common.h
+programs_sndfile_metadata_get_LDADD = src/libsndfile.la
+
+programs_sndfile_interleave_SOURCES = programs/sndfile-interleave.c programs/common.c programs/common.h
+programs_sndfile_interleave_LDADD = src/libsndfile.la
+
+programs_sndfile_deinterleave_SOURCES = programs/sndfile-deinterleave.c programs/common.c programs/common.h
+programs_sndfile_deinterleave_LDADD = src/libsndfile.la
+
+programs_sndfile_concat_SOURCES = programs/sndfile-concat.c programs/common.c programs/common.h
+programs_sndfile_concat_LDADD = src/libsndfile.la
+
+programs_sndfile_salvage_SOURCES = programs/sndfile-salvage.c programs/common.c programs/common.h
+programs_sndfile_salvage_LDADD = src/libsndfile.la
+
+############
+# regtest/ #
+############
+
+if HAVE_SQLITE3
+check_PROGRAMS += regtest/sndfile-regtest
+endif
+
+regtest_sndfile_regtest_SOURCES = regtest/regtest.h regtest/sndfile-regtest.c regtest/database.c regtest/checksum.c
+regtest_sndfile_CPPFLAGS = -I$(top_srcdir)/src $(SQLITE3_CFLAGS) $(OS_SPECIFIC_CFLAGS)
+regtest_sndfile_regtest_LDADD = src/libsndfile.la $(SQLITE3_LIBS)
+
+################
+# test-tarball #
+################
+test-tarball : Scripts/build-test-tarball.mk
+	$(MAKE) $(bin_PROGRAMS) $(check_PROGRAMS)
+	$(MAKE) -f Scripts/build-test-tarball.mk

extern/libsndfile-modified/NEWS.OLD

@@ -0,0 +1,303 @@
+Version 1.0.31 (2021-01-24)
+
+  * The releaser of libsndfile starting from this version is the libsndfile team
+    member @SoapGentoo, see AUTHORS for details.
+  * Implement fast SSE2 optimized psf_lrintf() and psf_lrintf() functions to
+    improve perfomance when libsndfile is built using Visual C++ (especially)
+    and other compilers on x86 and AMD64 platforms. See also description of
+    ENABLE_SSE2 CMake option in README.md.
+  * Documentation:
+    * Move site to new URL: http://libsndfile.github.io/libsndfile/
+    * Convert documentation pages from HTML to Markdown
+    * Use GitHub's Jekyll static site generator to generate static HTML pages
+      for site
+    * Fix api.md table error, thanks to @zodf0055980
+    * Other docuemntation fixes and updates
+  * Change CMake's project name from sndfile to libsndfile as it should be.
+  * Change behaviour of ENABLE_STATIC_RUNTIME option. In short:
+    * You can use ENABLE_STATIC_RUNTIME for CMake >= 3.15 without error.
+    * You can use your our method to set MSVC runtime library flags if none of
+      ENABLE_STATIC_RUNTIME and CMAKE_MSVC_RUNTIME_LIBRARY were set.
+    Advanced information:
+    * If this option is defined (set to ON or OFF), set CMP0091 policy to OLD
+      (we handle MSVC runtime library flags using compiler flags), set
+      corresponding compiler flags for user.
+    * NEW: If this option is not defined, set CMP0091 policy to OLD (we handle
+      MSVC runtime library flags using compiler flags), don't touch compiler
+      options, allow user to set it manually.
+    * NEW: If new CMake option CMAKE_MSVC_RUNTIME_LIBRARY is set, change
+      CMP0091 policy to NEW (we handle MSVC runtime library flags using that
+      option), don't touch compiler flags.
+    * NEW: If both ENABLE_STATIC_RUNTIME and CMAKE_MSVC_RUNTIME_LIBRARY are set,
+      terminate configuration with fatal error.
+    * For MinGW toolchain this option is experimental. If you enabled it and
+      then disabled again, you need to clear CMake cache (delete
+      CMakeCache.txt).
+  * Make CMake clip test faster.
+  * Fix CMake bug with sndio library dependency, thanks to @drhenault.
+  * Fix memory leak in wav_read_smpl_chunk() function, credit to OSS-Fuzz.
+  * Fix aiff_read_header() memory leak(), credit to OSS-Fuzz.
+  * Fix leak in wav_read_header(), credit to OSS-Fuzz.
+  * Fix leak in wavlike_read_cart_chunk(), credit to OSS-Fuzz.
+  * Fix memory leak in wav_read_acid_chunk(), credit to OSS-Fuzz.
+  * Fix memory leak in aiff_read_basc_chunk(), credit to OSS-Fuzz.
+  * Fix memory leak in wavlike_read_peak_chunk(), credit to OSS-Fuzz.
+  * Fix memory leak in aiff_read_header(), credit to OSS-Fuzz.
+  * Fix use of uninitialized value in exif_subchunk_parse(), credit to OSS-Fuzz.
+  * Fix use of uninitialized value in endswap_int64_t_array(), credit to
+    OSS-Fuzz.
+  * Fix up the fuzzer so that it can't under or overseek,
+    thanks to Max Dymond <cmeister2@gmail.com>.
+  * Fix Autotools configure on macOS, thanks to @tmcguire and @nwh.
+  * Exclude repository-configuration from git-archive, thanks to @umlaeute.
+  * Use version-script when compiling with clang on Unix with Autotools, thanks
+    to @tstellar.
+  * Improve handling of SMPL chunks in WAV files, thanks to @zodf0055980.
+
+Version 1.0.30 (2020-09-18)
+
+  * Fix critical CMake bug with broken ABI of shared libsndfile library.
+  * CMake build system considered to be stable.
+  * Move sndfile.h.in from src/ to include/ directory. To avoid problems,
+    delete old generated sndfile.h from $(top_builddir)/src.
+  * Huge documentation update.
+  * Fix opus test failures on BE platforms, thanks to
+    Arthur Taylor <art@ified.ca>.
+  * Fix bug when sf_open_fd() function sometimes leaves filehandle open, even
+    if `close_desc` parameter is TRUE, thanks to @umläute.
+  * Fix infinite loops on some pathological SD2 files, thanks to
+    Jeremy Friesner <jaf@meyersound.com>.
+  * Switch to GitHub Actions for continuous integration.
+  * Add OSS-Fuzz tests to GitHub Actions workflow, thanks to
+    Max Dymond <cmeister2@gmail.com>.
+  * Fix memory leak in wavlike_read_bext_chunk() function, credit to OSS-Fuzz.
+  * Fix undefined behavior in avr-read_header() function, credit to OSS-Fuzz.
+  * Add INSTALL_PKGCONFIG_MODULE CMake option to control sndfile.pc file
+    installation, see README.md for details.
+  * Add INSTALL_MANPAGES CMake option, see README.md for details.
+  * Fix ENABLE_COMPATIBLE_LIBSNDFILE_NAME CMake option, now it works on MinGW
+    platform too.
+  * Fix ENABLE_CPACK CMake option, see README.md for details.
+  * Fix ENABLE_STATIC_RUNTIME and CMAKE_MSVC_RUNTIME_LIBRARY behavior, see
+    README.md for details.
+  * Fix CMake man pages installation bug when sndfile-deinterleave.1 and
+    sndfile-metadata-set.1 were not installed.
+  * Fix sndfile-regtest paths handling on Windows platform, thanks to
+    Gisle Vanem <gvanem@yahoo.no>.
+
+Version 1.0.29 (2020-08-15)
+  * Add support for Opus files.
+  * Autotool build system improvements.
+  * CMake build system improvements.
+  * Fixes for: CVE-2017-12562, CVE-2017-17456, CVE-2017-17457, CVE-2018-19661,
+    CVE-2018-19662, CVE-2018-19758 and CVE-2019-3832.
+  * Add BWF v2 loudness parameters.
+  * Wave64: Permit and skip arbitrary chunks prior to the data chunk.
+  * Fix ASAN crash in wavlike_ima_seek().
+  * Fix IMA-ADPCM encoding for AIFF files.
+  * sndfile-convert: Handle gsm, vox and opus extensions the same way.
+  * Add SFC_SET_OGG_PAGE_LATENCY_MS command to get Ogg page latency for Ogg Opus
+    files.
+  * Fix parsing of some SD2 files.
+  * Documentation updates.
+  * Minor bug fixes and improvements.
+
+Version 1.0.28 (2017-04-02)
+  * Fix buffer overruns in FLAC and ID3 handling code.
+  * Move to variable length header storage.
+  * Fix detection of Large File Support for 32 bit systems.
+  * Remove large stack allocations in ALAC handling code.
+  * Remove all use of Variable Length Arrays.
+  * Minor bug fixes and improvements.
+
+Version 1.0.27 (2016-06-19)
+  * Fix an SF_INFO seekable flag regression introduced in 1.0.26.
+  * Fix potential infinite loops on malformed input files.
+  * Add string metadata read/write for CAF and RF64.
+  * Add handling of CUE chunks.
+  * Fix endian-ness issues in PAF files.
+  * Minor bug fixes and improvements.
+
+Version 1.0.26 (2015-11-22)
+  * Fix for CVE-2014-9496, SD2 buffer read overflow.
+  * Fix for CVE-2014-9756, file_io.c divide by zero.
+  * Fix for CVE-2015-7805, AIFF heap write overflow.
+  * Add support for ALAC encoder in a CAF container.
+  * Add support for Cart chunks in WAV files.
+  * Minor bug fixes and improvements.
+
+Version 1.0.25 (2011-07-13)
+  * Fix for Secunia Advisory SA45125, heap overflow in PAF file handler.
+  * Accept broken WAV files with blockalign == 0.
+  * Minor bug fixes and improvements.
+
+Version 1.0.24 (2011-03-23)
+  * WAV files now have an 18 byte u-law and A-law fmt chunk.
+  * Document virtual I/O functionality.
+  * Two new methods rawHandle() and takeOwnership() in sndfile.hh.
+  * AIFF fix for non-zero offset value in SSND chunk.
+  * Minor bug fixes and improvements.
+
+Version 1.0.23 (2010-10-10)
+  * Add version metadata to Windows DLL.
+  * Add a missing 'inline' to sndfile.hh.
+  * Update docs.
+  * Minor bug fixes and improvements.
+
+Version 1.0.22 (2010-10-04)
+  * Couple of fixes for SDS file writer.
+  * Fixes arising from static analysis.
+  * Handle FLAC files with ID3 meta data at start of file.
+  * Handle FLAC files which report zero length.
+  * Other minor bug fixes and improvements.
+
+Version 1.0.21 (2009-12-13)
+  * Add a couple of new binary programs to programs/ dir.
+  * Remove sndfile-jackplay (now in sndfile-tools package).
+  * Add windows only function sf_wchar_open().
+  * Bunch of minor bug fixes.
+
+Version 1.0.20 (2009-05-14)
+  * Fix potential heap overflow in VOC file parser (Tobias Klein, http://www.trapkit.de/).
+
+Version 1.0.19 (2009-03-02)
+  * Fix for CVE-2009-0186 (Alin Rad Pop, Secunia Research).
+  * Huge number of minor bug fixes as a result of static analysis.
+
+Version 1.0.18 (2009-02-07)
+  * Add Ogg/Vorbis support (thanks to John ffitch).
+  * Remove captive FLAC library.
+  * Many new features and bug fixes.
+  * Generate Win32 and Win64 pre-compiled binaries.
+
+Version 1.0.17 (2006-08-31)
+  * Add sndfile.hh C++ wrapper.
+  * Update Win32 MinGW build instructions.
+  * Minor bug fixes and cleanups.
+
+Version 1.0.16 (2006-04-30)
+  * Add support for Broadcast (BEXT) chunks in WAV files.
+  * Implement new commands SFC_GET_SIGNAL_MAX and SFC_GET_MAX_ALL_CHANNELS.
+  * Add support for RIFX (big endian WAV variant).
+  * Fix configure script bugs.
+  * Fix bug in INST and MARK chunk writing for AIFF files.
+
+Version 1.0.15 (2006-03-16)
+  * Fix some ia64 issues.
+  * Fix precompiled DLL.
+  * Minor bug fixes.
+
+Version 1.0.14 (2006-02-19)
+  * Really fix MinGW compile problems.
+  * Minor bug fixes.
+
+Version 1.0.13 (2006-01-21)
+  * Fix for MinGW compiler problems.
+  * Allow readin/write of instrument chunks from WAV and AIFF files.
+  * Compile problem fix for Solaris compiler.
+  * Minor cleanups and bug fixes.
+
+Version 1.0.12 (2005-09-30)
+  * Add support for FLAC and Apple's Core Audio Format (CAF).
+  * Add virtual I/O interface (still needs docs).
+  * Cygwin and other Win32 fixes.
+  * Minor bug fixes and cleanups.
+
+Version 1.0.11 (2004-11-15)
+  * Add support for SD2 files.
+  * Add read support for loop info in WAV and AIFF files.
+  * Add more tests.
+  * Improve type safety.
+  * Minor optimisations and bug fixes.
+
+Version 1.0.10 (2004-06-15)
+  * Fix AIFF read/write mode bugs.
+  * Add support for compiling Win32 DLLS using MinGW.
+  * Fix problems resulting in failed compiles with gcc-2.95.
+  * Improve test suite.
+  * Minor bug fixes.
+
+Version 1.0.9 (2004-03-30)
+  * Add handling of AVR (Audio Visual Research) files.
+  * Improve handling of WAVEFORMATEXTENSIBLE WAV files.
+  * Fix for using pipes on Win32.
+
+Version 1.0.8 (2004-03-14)
+  * Correct peak chunk handing for files with > 16 tracks.
+  * Fix for WAV files with huge number of CUE chunks.
+
+Version 1.0.7 (2004-02-25)
+  * Fix clip mode detection on ia64, MIPS and other CPUs.
+  * Fix two MacOSX build problems.
+
+Version 1.0.6 (2004-02-08)
+  * Added support for native Win32 file access API (Ross Bencina).
+  * New mode to add clippling then a converting from float/double to integer
+    would otherwise wrap around.
+  * Fixed a bug in reading/writing files > 2Gig on Linux, Solaris and others.
+  * Many minor bug fixes.
+  * Other random fixes for Win32.
+
+Version 1.0.5 (2003-05-03)
+  * Added support for HTK files.
+  * Added new function sf_open_fd() to allow for secure opening of temporary
+    files as well as reading/writing sound files embedded within larger
+    container files.
+  * Added string support for AIFF files.
+  * Minor bug fixes and code cleanups.
+
+Version 1.0.4 (2003-02-02)
+  * Added suport of PVF and XI files.
+  * Added functionality for setting and retreiving strings from sound files.
+  * Minor code cleanups and bug fixes.
+
+Version 1.0.3 (2002-12-09)
+  * Minor bug fixes.
+
+Version 1.0.2 (2002-11-24)
+  * Added support for VOX ADPCM.
+  * Improved error reporting.
+  * Added version scripting on Linux and Solaris.
+  * Minor bug fixes.
+
+Version 1.0.1 (2002-09-14)
+  * Added MAT and MAT5 file formats.
+  * Minor bug fixes.
+
+Version 1.0.0 (2002-08-16)
+  * Final release for 1.0.0.
+
+Version 1.0.0rc6 (2002-08-14)
+  * Release candidate 6 for the 1.0.0 series.
+  * MacOS9 fixes.
+
+Version 1.0.0rc5 (2002-08-10)
+  * Release candidate 5 for the 1.0.0 series.
+  * Changed the definition of sf_count_t which was causing problems when
+    libsndfile was compiled with other libraries (ie WxWindows).
+  * Minor bug fixes.
+  * Documentation cleanup.
+
+Version 1.0.0rc4 (2002-08-03)
+  * Release candidate 4 for the 1.0.0 series.
+  * Minor bug fixes.
+  * Fix broken Win32 "make check".
+
+Version 1.0.0rc3 (2002-08-02)
+  * Release candidate 3 for the 1.0.0 series.
+  * Fix bug where libsndfile was reading beyond the end of the data chunk.
+  * Added on-the-fly header updates on write.
+  * Fix a couple of documentation issues.
+
+Version 1.0.0rc2 (2002-06-24)
+  * Release candidate 2 for the 1.0.0 series.
+  * Fix compile problem for Win32.
+
+Version 1.0.0rc1 (2002-06-24)
+  * Release candidate 1 for the 1.0.0 series.
+
+Version 0.0.28 (2002-04-27)
+  * Last official release of 0.0.X series of the library.
+
+Version 0.0.8 (1999-02-16)
+  * First official release.

extern/libsndfile-modified/Octave/Makefile.am

@@ -0,0 +1,79 @@
+## Process this file with automake to produce Makefile.in
+
+# Prevent any extension.
+EXEEXT =
+
+CXXLD = $(CXX)
+CXXLINK = $(LIBTOOL) --tag=CXX --mode=link $(CXXLD) $(AM_CXXFLAGS) \
+	$(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+
+EXTRA_DIST = sndfile_load.m sndfile_save.m sndfile_play.m \
+	octave_test.m octave_test.sh $(oct_module_srcs) PKG_ADD
+
+octconfigdir = $(exec_prefix)/share/octave/site/m
+octconfig_DATA = sndfile_load.m sndfile_save.m sndfile_play.m
+
+OCTAVE_DEST_MDIR = @OCTAVE_DEST_MDIR@
+OCTAVE_DEST_ODIR = @OCTAVE_DEST_ODIR@/sndfile
+
+OCT_CXXFLAGS = @OCT_CXXFLAGS@
+OCT_LIB_DIR = @OCT_LIB_DIR@
+OCT_LIBS = @OCT_LIBS@
+
+SNDFILEDIR = $(top_builddir)/src
+AM_CPPFLAGS = -I$(SNDFILEDIR)
+
+oct_module_srcs = sndfile.cc
+oct_module_files = sndfile.oct PKG_ADD
+
+# Make these noinst so they can be installed manually.
+noinst_DATA = $(oct_module_files)
+
+
+# Used by shave which cleans up automake generated Makefile output.
+V         = @
+Q         = $(V:1=)
+QUIET_GEN = $(Q:@=@echo '  GEN   '$@;)
+
+
+# Use Octave's mkoctfile to do all the heavy lifting. Unfortunately, its
+# a little dumb so we need to guide it carefully.
+sndfile.oct : sndfile.o
+	$(QUIET_GEN) $(MKOCTFILE) -v $(INCLUDES) $(top_builddir)/Octave/$+ -L$(SNDFILEDIR)/.libs -L$(SNDFILEDIR) -lsndfile -o $(top_builddir)/Octave/$@ > /dev/null
+
+sndfile.o : sndfile.cc
+	$(QUIET_GEN) $(MKOCTFILE) -v $(INCLUDES) -c $+ -o $(top_builddir)/Octave/$@ > /dev/null
+
+# Allow for the test being run in the build dir, but the test script
+# being located in the source dir.
+check :
+	octave_src_dir=$(srcdir) $(srcdir)/octave_test.sh
+
+
+# Since the octave modules are installed in a special location, a custom install
+# and uninstall routine must be specified.
+install-exec-local : $(oct_module_files)
+	@$(NORMAL_INSTALL)
+	test -z "$(OCTAVE_DEST_ODIR)" || $(mkdir_p) "$(DESTDIR)$(OCTAVE_DEST_ODIR)"
+	@list='$(oct_module_files)'; for p in $$list; do \
+	  p1=`echo $$p|sed 's/$(EXEEXT)$$//'`; \
+	  if test -f $$p \
+	     || test -f $$p1 \
+	  ; then \
+	    f=`echo "$$p1" | sed 's,^.*/,,;$(transform);s/$$/$(EXEEXT)/'`; \
+	   echo " $(INSTALL_PROGRAM_ENV) $(LIBTOOL) --mode=install $(INSTALL) '$$p' '$(DESTDIR)$(OCTAVE_DEST_ODIR)/$$f'"; \
+	   $(INSTALL_PROGRAM_ENV) $(LIBTOOL) --mode=install $(INSTALL) "$$p" "$(DESTDIR)$(OCTAVE_DEST_ODIR)/$$f" || exit 1; \
+	  else :; fi; \
+	done
+
+uninstall-local :
+	@$(NORMAL_UNINSTALL)
+	@list='$(oct_module_files)'; for p in $$list; do \
+	  f=`echo "$$p" | sed 's,^.*/,,;s/$(EXEEXT)$$//;$(transform);s/$$/$(EXEEXT)/'`; \
+	  echo " rm -f '$(DESTDIR)$(OCTAVE_DEST_ODIR)/$$f'"; \
+	  rm -f "$(DESTDIR)$(OCTAVE_DEST_ODIR)/$$f"; \
+	done
+
+clean-local :
+	rm -f sndfile.o sndfile.oct
+	@if test $(abs_builddir) != $(abs_srcdir) ; then rm -f PKG_ADD ; fi

extern/libsndfile-modified/Octave/PKG_ADD

@@ -0,0 +1,3 @@
+autoload ("sfread", "sndfile.oct");
+autoload ("sfversion", "sndfile.oct");
+autoload ("sfwrite", "sndfile.oct");

extern/libsndfile-modified/Octave/Readme.txt

@@ -0,0 +1,23 @@
+The libsndfile Modules for GNU Octave
+=====================================
+
+These modules are currently known to work with version 3.0 of GNU Octave on
+Linux. They have not been tested elsewhere.
+
+
+Build Requirements
+------------------
+
+In order to build these libsndfile related modules for GNU Octave on a Debian
+GNU/Linux (or Debian derived) system, you will need (on top of what is normally
+required to build libsndfile) the package:
+
+	octaveX.Y-headers
+
+where X.Y matches the version number of your installation of GNU Octave.
+
+The configure script in the top level libsndfile directory will detect the 
+presence and correct versions of the Octave build tools. The building of these
+modules will only go ahead if everything is correct.
+
+

extern/libsndfile-modified/Octave/format.h

@@ -0,0 +1,21 @@
+/*
+** Copyright (C) 2007-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU Lesser General Public License as published by
+** the Free Software Foundation; either version 2.1 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU Lesser General Public License for more details.
+**
+** You should have received a copy of the GNU Lesser General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+
+int format_of_str (const std::string & fmt) ;
+
+void string_of_format (std::string & fmt, int format) ;

extern/libsndfile-modified/Octave/octave_test.m

@@ -0,0 +1,52 @@
+# Copyright (C) 2007-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+# These tests are nowhere near comprehensive.
+
+printf ("    Running Octave tests                     : ") ;
+fflush (stdout) ;
+
+filename = "whatever" ;
+srate_out = 32000 ;
+fmt_out = "wav-float" ;
+
+t = (2 * pi / srate_out * (0:srate_out-1))' ;
+data_out = sin (440.0 * t) ;
+
+# Write out a file.
+sfwrite (filename, data_out, srate_out, fmt_out) ;
+
+# Read it back in again.
+[ data_in, srate_in, fmt_in ] = sfread (filename) ;
+
+if (srate_in != srate_out)
+	error ("\n\nSample rate mismatch : %d -> %d.\n\n", srate_out, srate_in) ;
+	endif
+
+# Octave strcmp return 1 for the same.
+if (strcmp (fmt_in, fmt_out) != 1)
+	error ("\n\nFormat error : '%s' -> '%s'.\n\n", fmt_out, fmt_in) ;
+	endif
+
+err = max (abs (data_out - data_in)) ;
+
+if (err > 1e-7)
+	error ("err : %g\n", err) ;
+	endif
+
+printf ("ok") ;
+
+unlink (filename) ;

extern/libsndfile-modified/Octave/octave_test.sh

@@ -0,0 +1,81 @@
+#!/bin/bash
+
+
+# Check where we're being run from.
+if test -d Octave ; then
+	cd Octave
+	octave_src_dir=$(pwd)
+elif test -z "$octave_src_dir" ; then
+	echo
+	echo "Error : \$octave_src_dir is undefined."
+	echo
+	exit 1
+else
+	octave_src_dir=$(cd $octave_src_dir && pwd)
+	fi
+
+# Find libsndfile shared object.
+libsndfile_lib_location=""
+
+if test -f "../src/.libs/libsndfile.so" ; then
+	libsndfile_lib_location="../src/.libs/"
+elif test -f "../src/libsndfile.so" ; then
+	libsndfile_lib_location="../src/"
+elif test -f "../src/.libs/libsndfile.dylib" ; then
+	libsndfile_lib_location="../src/.libs/"
+elif test -f "../src/libsndfile.dylib" ; then
+	libsndfile_lib_location="../src/"
+else
+	echo
+	echo "Not able to find the libsndfile shared lib we've just built."
+	echo "This may cause the following test to fail."
+	echo
+	fi
+
+libsndfile_lib_location=`(cd $libsndfile_lib_location && pwd)`
+
+
+# Find sndfile.oct
+sndfile_oct_location=""
+
+if test -f .libs/sndfile.oct ; then
+	sndfile_oct_location=".libs"
+elif test -f sndfile.oct ; then
+	sndfile_oct_location="."
+else
+	echo "Not able to find the sndfile.oct binaries we've just built."
+	exit 1
+	fi
+
+case `file -b $sndfile_oct_location/sndfile.oct` in
+	ELF*)
+		;;
+	Mach*)
+		echo "Tests don't work on this platform."
+		exit 0
+		;;
+	*)
+		echo "Not able to find the sndfile.oct binary we just built."
+		exit 1
+		;;
+	esac
+
+
+# Make sure the TERM environment variable doesn't contain anything wrong.
+unset TERM
+# echo "octave_src_dir : $octave_src_dir"
+# echo "libsndfile_lib_location : $libsndfile_lib_location"
+# echo "sndfile_oct_location : $sndfile_oct_location"
+
+if test ! -f PKG_ADD ; then
+	cp $octave_src_dir/PKG_ADD .
+	fi
+
+export LD_LIBRARY_PATH="$libsndfile_lib_location:$LD_LIBRARY_PATH"
+
+octave_script="$octave_src_dir/octave_test.m"
+
+(cd $sndfile_oct_location && octave -qH $octave_script)
+res=$?
+echo
+exit $res

extern/libsndfile-modified/Octave/sndfile.cc

@@ -0,0 +1,405 @@
+/*
+** Copyright (C) 2007-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU Lesser General Public License as published by
+** the Free Software Foundation; either version 2.1 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU Lesser General Public License for more details.
+**
+** You should have received a copy of the GNU Lesser General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+
+#include <octave/oct.h>
+
+#include "sndfile.h"
+
+#define FOUR_GIG 		(0x100000000LL)
+#define	BUFFER_FRAMES	8192
+
+
+static int format_of_str (const std::string & fmt) ;
+static void string_of_format (std::string & fmt, int format) ;
+
+
+DEFUN_DLD (sfversion, args, nargout ,
+"-*- texinfo -*-\n\
+@deftypefn {Loadable Function} {@var{version} =} sfversion ()\n\
+@cindex Reading sound files\n\
+Return a string containing the libsndfile version.\n\
+@seealso{sfread, sfwrite}\n\
+@end deftypefn")
+{	char buffer [256] ;
+	octave_value_list retval ;
+
+	/* Bail out if the input parameters are bad. */
+	if (args.length () != 0 || nargout > 1)
+	{	print_usage () ;
+		return retval ;
+		} ;
+
+	sf_command (NULL, SFC_GET_LIB_VERSION, buffer, sizeof (buffer)) ;
+
+	std::string version (buffer) ;
+
+	retval.append (version) ;
+	return retval ;
+} /* sfversion */
+
+
+DEFUN_DLD (sfread, args, nargout ,
+"-*- texinfo -*-\n\
+@deftypefn {Loadable Function} {@var{data},@var{srate},@var{format} =} sfread (@var{filename})\n\
+@cindex Reading sound files\n\
+Read a sound file from disk using libsndfile.\n\
+@seealso{sfversion, sfwrite}\n\
+@end deftypefn")
+{	SNDFILE * file ;
+	SF_INFO sfinfo ;
+
+	octave_value_list retval ;
+
+	int nargin  = args.length () ;
+
+	/* Bail out if the input parameters are bad. */
+	if ((nargin != 1) || !args (0) .is_string () || nargout < 1 || nargout > 3)
+	{	print_usage () ;
+		return retval ;
+		} ;
+
+	memset (&sfinfo, 0, sizeof (sfinfo)) ;
+
+	std::string filename = args (0).string_value () ;
+
+	if ((file = sf_open (filename.c_str (), SFM_READ, &sfinfo)) == NULL)
+	{	error ("sfread: couldn't open file %s : %s", filename.c_str (), sf_strerror (NULL)) ;
+		return retval ;
+		} ;
+
+	if (sfinfo.frames > FOUR_GIG)
+		printf ("This is a really huge file (%lld frames).\nYou may run out of memory trying to load it.\n", (long long) sfinfo.frames) ;
+
+	dim_vector dim = dim_vector () ;
+	dim.resize (2) ;
+	dim (0) = sfinfo.frames ;
+	dim (1) = sfinfo.channels ;
+
+	/* Should I be using Matrix instead? */
+	NDArray out (dim, 0.0) ;
+
+	float buffer [BUFFER_FRAMES * sfinfo.channels] ;
+	int readcount ;
+	sf_count_t total = 0 ;
+
+	do
+	{	readcount = sf_readf_float (file, buffer, BUFFER_FRAMES) ;
+
+		/* Make sure we don't read more frames than we allocated. */
+		if (total + readcount > sfinfo.frames)
+			readcount = sfinfo.frames - total ;
+
+		for (int ch = 0 ; ch < sfinfo.channels ; ch++)
+		{	for (int k = 0 ; k < readcount ; k++)
+				out (total + k, ch) = buffer [k * sfinfo.channels + ch] ;
+			} ;
+
+		total += readcount ;
+	} while (readcount > 0 && total < sfinfo.frames) ;
+
+	retval.append (out.squeeze ()) ;
+
+	if (nargout >= 2)
+		retval.append ((octave_uint32) sfinfo.samplerate) ;
+
+	if (nargout >= 3)
+	{	std::string fmt ("") ;
+		string_of_format (fmt, sfinfo.format) ;
+		retval.append (fmt) ;
+		} ;
+
+	/* Clean up. */
+	sf_close (file) ;
+
+	return retval ;
+} /* sfread */
+
+DEFUN_DLD (sfwrite, args, nargout ,
+"-*- texinfo -*-\n\
+@deftypefn {Function File} sfwrite (@var{filename},@var{data},@var{srate},@var{format})\n\
+Write a sound file to disk using libsndfile.\n\
+@seealso{sfread, sfversion}\n\
+@end deftypefn\n\
+")
+{	SNDFILE * file ;
+	SF_INFO sfinfo ;
+
+    octave_value_list retval ;
+
+    int nargin  = args.length () ;
+
+    /* Bail out if the input parameters are bad. */
+    if (nargin != 4 || !args (0).is_string () || !args (1).is_real_matrix ()
+			|| !args (2).is_real_scalar () || !args (3).is_string ()
+			|| nargout != 0)
+	{	print_usage () ;
+		return retval ;
+    	} ;
+
+    std::string filename = args (0).string_value () ;
+    std::string format = args (3).string_value () ;
+
+	memset (&sfinfo, 0, sizeof (sfinfo)) ;
+
+	sfinfo.format = format_of_str (format) ;
+	if (sfinfo.format == 0)
+	{	error ("Bad format '%s'", format.c_str ()) ;
+		return retval ;
+		} ;
+
+	sfinfo.samplerate = lrint (args (2).scalar_value ()) ;
+	if (sfinfo.samplerate < 1)
+	{	error ("Bad sample rate : %d.\n", sfinfo.samplerate) ;
+		return retval ;
+		} ;
+
+	Matrix data = args (1).matrix_value () ;
+	long rows = args (1).rows () ;
+	long cols = args (1).columns () ;
+
+	if (cols > rows)
+	{	error ("Audio data should have one column per channel, but supplied data "
+				"has %ld rows and %ld columns.\n", rows, cols) ;
+		return retval ;
+		} ;
+
+	sfinfo.channels = cols ;
+
+    if ((file = sf_open (filename.c_str (), SFM_WRITE, &sfinfo)) == NULL)
+	{	error ("Couldn't open file %s : %s", filename.c_str (), sf_strerror (NULL)) ;
+		return retval ;
+    	} ;
+
+	float buffer [BUFFER_FRAMES * sfinfo.channels] ;
+	int writecount ;
+	long total = 0 ;
+
+	do
+	{
+		writecount = BUFFER_FRAMES ;
+
+		/* Make sure we don't read more frames than we allocated. */
+		if (total + writecount > rows)
+			writecount = rows - total ;
+
+		for (int ch = 0 ; ch < sfinfo.channels ; ch++)
+		{	for (int k = 0 ; k < writecount ; k++)
+				buffer [k * sfinfo.channels + ch] = data (total + k, ch) ;
+			} ;
+
+		if (writecount > 0)
+			sf_writef_float (file, buffer, writecount) ;
+
+		total += writecount ;
+	} while (writecount > 0 && total < rows) ;
+
+    /* Clean up. */
+    sf_close (file) ;
+
+    return retval ;
+} /* sfwrite */
+
+
+static void
+str_split (const std::string & str, const std::string & delim, std::vector <std::string> & output)
+{
+    unsigned int offset = 0 ;
+    size_t delim_index = 0 ;
+
+    delim_index = str.find (delim, offset) ;
+
+    while (delim_index != std::string::npos)
+    {
+        output.push_back (str.substr(offset, delim_index - offset)) ;
+        offset += delim_index - offset + delim.length () ;
+        delim_index = str.find (delim, offset) ;
+    }
+
+    output.push_back (str.substr (offset)) ;
+} /* str_split */
+
+static int
+hash_of_str (const std::string & str)
+{
+	int hash = 0 ;
+
+	for (unsigned k = 0 ; k < str.length () ; k++)
+		hash = (hash * 3) + tolower (str [k]) ;
+
+	return hash ;
+} /* hash_of_str */
+
+static int
+major_format_of_hash (const std::string & str)
+{	int hash ;
+
+	hash = hash_of_str (str) ;
+
+	switch (hash)
+	{
+		case 0x5c8 : /* 'wav' */ return SF_FORMAT_WAV ;
+		case 0xf84 : /* 'aiff' */ return SF_FORMAT_AIFF ;
+		case 0x198 : /* 'au' */ return SF_FORMAT_AU ;
+		case 0x579 : /* 'paf' */ return SF_FORMAT_PAF ;
+		case 0x5e5 : /* 'svx' */ return SF_FORMAT_SVX ;
+		case 0x1118 : /* 'nist' */ return SF_FORMAT_NIST ;
+		case 0x5d6 : /* 'voc' */ return SF_FORMAT_VOC ;
+		case 0x324a : /* 'ircam' */ return SF_FORMAT_IRCAM ;
+		case 0x505 : /* 'w64' */ return SF_FORMAT_W64 ;
+		case 0x1078 : /* 'mat4' */ return SF_FORMAT_MAT4 ;
+		case 0x1079 : /* 'mat5' */ return SF_FORMAT_MAT5 ;
+		case 0x5b8 : /* 'pvf' */ return SF_FORMAT_PVF ;
+		case 0x1d1 : /* 'xi' */ return SF_FORMAT_XI ;
+		case 0x56f : /* 'htk' */ return SF_FORMAT_HTK ;
+		case 0x5aa : /* 'sds' */ return SF_FORMAT_SDS ;
+		case 0x53d : /* 'avr' */ return SF_FORMAT_AVR ;
+		case 0x11d0 : /* 'wavx' */ return SF_FORMAT_WAVEX ;
+		case 0x569 : /* 'sd2' */ return SF_FORMAT_SD2 ;
+		case 0x1014 : /* 'flac' */ return SF_FORMAT_FLAC ;
+		case 0x504 : /* 'caf' */ return SF_FORMAT_CAF ;
+		case 0x5f6 : /* 'wve' */ return SF_FORMAT_WVE ;
+		default : break ;
+		} ;
+
+	printf ("%s : hash '%s' -> 0x%x\n", __func__, str.c_str (), hash) ;
+
+	return 0 ;
+} /* major_format_of_hash */
+
+static int
+minor_format_of_hash (const std::string & str)
+{	int hash ;
+
+	hash = hash_of_str (str) ;
+
+	switch (hash)
+	{
+		case 0x1085 : /* 'int8' */ return SF_FORMAT_PCM_S8 ;
+		case 0x358a : /* 'uint8' */ return SF_FORMAT_PCM_U8 ;
+		case 0x31b0 : /* 'int16' */ return SF_FORMAT_PCM_16 ;
+		case 0x31b1 : /* 'int24' */ return SF_FORMAT_PCM_24 ;
+		case 0x31b2 : /* 'int32' */ return SF_FORMAT_PCM_32 ;
+		case 0x3128 : /* 'float' */ return SF_FORMAT_FLOAT ;
+		case 0x937d : /* 'double' */ return SF_FORMAT_DOUBLE ;
+		case 0x11bd : /* 'ulaw' */ return SF_FORMAT_ULAW ;
+		case 0xfa1 : /* 'alaw' */ return SF_FORMAT_ALAW ;
+		case 0xfc361 : /* 'ima_adpcm' */ return SF_FORMAT_IMA_ADPCM ;
+		case 0x5739a : /* 'ms_adpcm' */ return SF_FORMAT_MS_ADPCM ;
+		case 0x9450 : /* 'gsm610' */ return SF_FORMAT_GSM610 ;
+		case 0x172a3 : /* 'g721_32' */ return SF_FORMAT_G721_32 ;
+		case 0x172d8 : /* 'g723_24' */ return SF_FORMAT_G723_24 ;
+		case 0x172da : /* 'g723_40' */ return SF_FORMAT_G723_40 ;
+		default : break ;
+		} ;
+
+	printf ("%s : hash '%s' -> 0x%x\n", __func__, str.c_str (), hash) ;
+
+	return 0 ;
+} /* minor_format_of_hash */
+
+
+static const char *
+string_of_major_format (int format)
+{
+	switch (format & SF_FORMAT_TYPEMASK)
+	{
+		case SF_FORMAT_WAV : return "wav" ;
+		case SF_FORMAT_AIFF : return "aiff" ;
+		case SF_FORMAT_AU : return "au" ;
+		case SF_FORMAT_PAF : return "paf" ;
+		case SF_FORMAT_SVX : return "svx" ;
+		case SF_FORMAT_NIST : return "nist" ;
+		case SF_FORMAT_VOC : return "voc" ;
+		case SF_FORMAT_IRCAM : return "ircam" ;
+		case SF_FORMAT_W64 : return "w64" ;
+		case SF_FORMAT_MAT4 : return "mat4" ;
+		case SF_FORMAT_MAT5 : return "mat5" ;
+		case SF_FORMAT_PVF : return "pvf" ;
+		case SF_FORMAT_XI : return "xi" ;
+		case SF_FORMAT_HTK : return "htk" ;
+		case SF_FORMAT_SDS : return "sds" ;
+		case SF_FORMAT_AVR : return "avr" ;
+		case SF_FORMAT_WAVEX : return "wavx" ;
+		case SF_FORMAT_SD2 : return "sd2" ;
+		case SF_FORMAT_FLAC : return "flac" ;
+		case SF_FORMAT_CAF : return "caf" ;
+		case SF_FORMAT_WVE : return "wfe" ;
+		default : break ;
+		} ;
+
+	return "unknown" ;
+} /* string_of_major_format */
+
+static const char *
+string_of_minor_format (int format)
+{
+	switch (format & SF_FORMAT_SUBMASK)
+	{
+		case SF_FORMAT_PCM_S8 : return "int8" ;
+		case SF_FORMAT_PCM_U8 : return "uint8" ;
+		case SF_FORMAT_PCM_16 : return "int16" ;
+		case SF_FORMAT_PCM_24 : return "int24" ;
+		case SF_FORMAT_PCM_32 : return "int32" ;
+		case SF_FORMAT_FLOAT : return "float" ;
+		case SF_FORMAT_DOUBLE : return "double" ;
+		case SF_FORMAT_ULAW : return "ulaw" ;
+		case SF_FORMAT_ALAW : return "alaw" ;
+		case SF_FORMAT_IMA_ADPCM : return "ima_adpcm" ;
+		case SF_FORMAT_MS_ADPCM : return "ms_adpcm" ;
+		case SF_FORMAT_GSM610 : return "gsm610" ;
+		case SF_FORMAT_G721_32 : return "g721_32" ;
+		case SF_FORMAT_G723_24 : return "g723_24" ;
+		case SF_FORMAT_G723_40 : return "g723_40" ;
+		default : break ;
+		} ;
+
+	return "unknown" ;
+} /* string_of_minor_format */
+
+static int
+format_of_str (const std::string & fmt)
+{
+	std::vector <std::string> split ;
+
+	str_split (fmt, "-", split) ;
+
+	if (split.size () != 2)
+		return 0 ;
+
+	int major_fmt = major_format_of_hash (split.at (0)) ;
+	if (major_fmt == 0)
+		return 0 ;
+
+	int minor_fmt = minor_format_of_hash (split.at (1)) ;
+	if (minor_fmt == 0)
+		return 0 ;
+
+	return major_fmt | minor_fmt ;
+} /* format_of_str */
+
+static void
+string_of_format (std::string & fmt, int format)
+{
+	char buffer [64] ;
+
+	snprintf (buffer, sizeof (buffer), "%s-%s", string_of_major_format (format), string_of_minor_format (format)) ;
+
+	fmt = buffer ;
+
+	return ;
+} /* string_of_format */

extern/libsndfile-modified/Octave/sndfile_load.m

@@ -0,0 +1,52 @@
+## Copyright (C) 2002-2011  Erik de Castro Lopo
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2, or (at your option)
+## any later version.
+##
+## This program is distributed in the hope that it will be useful, but
+## WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+## General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this file.  If not, write to the Free Software Foundation,
+## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {} sndfile_load (@var{filename})
+## Load data from the file given by @var{filename}.
+## @end deftypefn
+
+## Author: Erik de Castro Lopo <erikd@mega-nerd.com>
+## Description: Load the sound data from the given file name
+
+function [data fs] = sndfile_load (filename)
+
+if (nargin != 1),
+	error ("Need an input filename") ;
+	endif
+
+samplerate = -1 ;
+samplingrate = -1 ;
+wavedata = -1 ;
+
+
+eval (sprintf ('load -f %s', filename)) ;
+
+if (samplerate > 0),
+	fs = samplerate ;
+elseif (samplingrate > 0),
+	fs = samplingrate ;
+else
+	error ("Not able to find sample rate.") ;
+	endif
+
+if (max (size (wavedata)) > 1),
+	data = wavedata ;
+else
+	error ("Not able to find waveform data.") ;
+	endif
+
+endfunction

extern/libsndfile-modified/Octave/sndfile_play.m

@@ -0,0 +1,59 @@
+## Copyright (C) 2002-2011  Erik de Castro Lopo
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2, or (at your option)
+## any later version.
+##
+## This program is distributed in the hope that it will be useful, but
+## WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+## General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this file.  If not, write to the Free Software Foundation,
+## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {} sndfile_play (@var{data, fs})
+## Play @var{data} at sample rate @var{fs} using the sndfile-play
+## program.
+## @end deftypefn
+
+## Author: Erik de Castro Lopo <erikd@mega-nerd.com>
+## Description: Play the given data as a sound file
+
+function sndfile_play (data, fs)
+
+if nargin != 2,
+	error ("Need two input arguments: data and fs.") ;
+	endif
+
+if (max (size (fs)) > 1),
+	error ("Second parameter fs must be a single value.") ;
+	endif
+
+[nr nc] = size (data) ;
+
+if (nr > nc),
+	data = data' ;
+	endif
+
+samplerate = fs ;
+wavedata = data ;
+
+filename = tmpnam () ;
+
+cmd = sprintf ("save -mat-binary %s fs data", filename) ;
+
+eval (cmd) ;
+
+cmd = sprintf ("sndfile-play %s", filename) ;
+
+[output, status] = system (cmd) ;
+
+if (status),
+	disp (outout) ;
+	endif
+
+endfunction

extern/libsndfile-modified/Octave/sndfile_save.m

@@ -0,0 +1,53 @@
+## Copyright (C) 2002-2011  Erik de Castro Lopo
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2, or (at your option)
+## any later version.
+##
+## This program is distributed in the hope that it will be useful, but
+## WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+## General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this file.  If not, write to the Free Software Foundation,
+## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {} sndfile_save (@var{filename, data, fs})
+## Save the given @var{data} as audio data to the given at @var{fs}. Set
+## the sample rate to @var{fs}.
+## @end deftypefn
+
+## Author: Erik de Castro Lopo <erikd@mega-nerd.com>
+## Description: Save data as a sound file
+
+function sndfile_save (filename, data, fs)
+
+if nargin != 3,
+	error ("Need three input arguments: filename, data and fs.") ;
+	endif
+
+if (! isstr (filename)),
+	error ("First parameter 'filename' is must be a string.") ;
+	endif
+
+if (max (size (fs)) > 1),
+	error ("Second parameter 'fs' must be a single value, not an array or matrix.") ;
+	endif
+
+[nr nc] = size (data) ;
+
+if (nr > nc),
+	data = data' ;
+	endif
+
+samplerate = fs ;
+wavedata = data ;
+
+str = sprintf ("save -mat-binary %s samplerate wavedata", filename) ;
+
+eval (str) ;
+
+endfunction

extern/libsndfile-modified/README

@@ -0,0 +1,78 @@
+NOTICE: THIS IS A MODIFIED VERSION OF LIBSNDFILE WHICH FIXES COMPILATION WHEN USING CMAKE 4.0.
+
+---
+
+libsndfile is a library of C routines for reading and writing
+files containing sampled audio data.
+
+The src/ directory contains the source code for library itself.
+
+The doc/ directory contains the libsndfile documentation.
+
+The examples/ directory contains examples of how to write code using
+libsndfile.
+
+The tests/ directory contains programs which link against libsndfile
+and test its functionality.
+
+The src/GSM610 directory contains code written by Jutta Degener and Carsten
+Bormann. Their original code can be found at :
+    http://kbs.cs.tu-berlin.de/~jutta/toast.html
+
+The src/G72x directory contains code written and released by Sun Microsystems
+under a suitably free license.
+
+The src/ALAC directory contains code written and released by Apple Inc and
+released under the Apache license.
+
+
+LINUX
+-----
+Wherever possible, you should use the packages supplied by your Linux
+distribution.
+
+If you really do need to compile from source it should be as easy as:
+
+		./configure
+		make
+		make install
+
+Since libsndfile optionally links against libFLAC, libogg, libvorbis and
+libopus, you will need to install appropriate versions of these libraries
+before running configure as above.
+
+You can use CMake now to build under Linux, also under Windows and MacOS, see
+README.md for details. CMake toolchain is usable, but still exterimental.
+
+
+UNIX
+----
+Compile as for Linux.
+
+
+Win32/Win64
+-----------
+
+Official Windows binaries are compiled with Autotools and MinGW, but you can use
+CMake to generate solution for Visual Studio. Details are described in
+README.md.
+
+It is still recommended to use the libsndfile binaries available on the
+libsndfile web site.
+
+MacOSX
+------
+Building on MacOSX should be the same as building it on any other Unix.
+
+
+CONTACTS
+--------
+
+libsndfile was written by Erik de Castro Lopo (erikd AT mega-nerd DOT com).
+The libsndfile home page is at :
+
+	http://libsndfile.github.io/libsndfile/
+
+Bugs and support questions can be raised at :
+
+	https://github.com/libsndfile/libsndfile/issues

extern/libsndfile-modified/README.md

@@ -0,0 +1,319 @@
+NOTICE: THIS IS A MODIFIED VERSION OF LIBSNDFILE WHICH FIXES COMPILATION WHEN USING CMAKE 4.0.
+
+---
+
+# libsndfile
+
+![C/C++ CI](https://github.com/libsndfile/libsndfile/workflows/C/C++%20CI/badge.svg)
+
+libsndfile is a C library for reading and writing files containing sampled audio
+data.
+
+## Authors
+
+The libsndfile project was originally developed and maintained by
+Erik de Castro Lopo <erikd@mega-nerd.com> aka @erikd. The project was developed
+on Github at <https://github.com/erikd/libsndfile>.
+
+After the release of version 1.0.30, @erikd transferred the project to
+[the libsndfile team](https://github.com/libsndfile), see [AUTHORS](AUTHORS)
+for details.
+
+## Hacking
+
+The canonical source code repository for libsndfile is at
+<https://github.com/libsndfile/libsndfile>.
+
+You can grab the source code using:
+
+    git clone https://github.com/libsndfile/libsndfile.git
+
+For building for Android see [BuildingForAndroid][BuildingForAndroid].
+
+There are currently two build systems: the traditional GNU autotool based one and
+modern CMake based build system. Use of the CMake build system is documented
+below.
+
+Setting up a build environment for libsndfile on Debian or Ubuntu is as simple as:
+
+    sudo apt install autoconf autogen automake build-essential libasound2-dev \
+      libflac-dev libogg-dev libtool libvorbis-dev libopus-dev libmp3lame-dev \
+      libmpg123-dev pkg-config python
+
+For other Linux distributions or any of the *BSDs, the setup should be similar
+although the package install tools and package names may be slightly different.
+
+Similarly on Mac OS X, assuming [brew] is already installed:
+
+    brew install autoconf autogen automake flac libogg libtool libvorbis opus mpg123 pkg-config
+
+Once the build environment has been set up, building and testing libsndfile is
+as simple as:
+
+    autoreconf -vif
+    ./configure --enable-werror
+    make
+    make check
+
+## The CMake build system
+
+Although Autotools is the primary and recommended build toolchain, CMake meta
+build generator is also available. The build process with CMake takes
+place in two stages. First, standard build files are created from configuration
+scripts. Then the platform's native build tools are used for the actual
+building. CMake can produce Microsoft Visual Studio project and solution files,
+Unix Makefiles, Xcode projects and [many more](https://cmake.org/cmake/help/latest/manual/cmake-generators.7.html).
+
+Some IDE support CMake natively or with plugins, check you IDE documentation
+ for details.
+
+### Requirements
+
+1. C99-compliant compiler toolchain (tested with GCC, Clang and Visual
+   Studio 2015)
+2. CMake 3.1.3 or newer
+
+There are some recommended packages to enable all features of libsndfile:
+
+1. Ogg, Vorbis and FLAC libraries and headers to enable these formats support
+2. ALSA development package under Linux to build sndfile-play utility
+3. Sndio development package under BSD to build sndfile-play utility
+
+### Building from command line
+
+CMake can handle out-of-place builds, enabling several builds from
+the same source tree, and cross-compilation. The ability to build a directory
+tree outside the source tree is a key feature, ensuring that if a build
+directory is removed, the source files remain unaffected.
+
+    mkdir CMakeBuild
+    cd CMakeBuild
+
+Then run `cmake` command with directory where CMakeLists.txt script is located
+as argument (relative paths are supported):
+
+    cmake ..
+
+This command will configure and write build script or solution to CMakeBuild
+directory. CMake is smart enough to create Unix makefiles under Linux or Visual
+Studio solution if you have Visual Studio installed, but you can configure
+[generator](https://cmake.org/cmake/help/latest/manual/cmake-generators.7.html)
+with `-G` command line parameter:
+
+    cmake .. -G"Unix Makefiles"
+
+The build procedure depends on the selected generator. With "Unix Makefiles" you
+can type:
+
+    make & make install
+
+With "Visual Studio" and some other generators you can open solution or project
+from `CMakeBuild` directory and build using IDE.
+
+Finally, you can use unified command:
+
+    cmake --build .
+
+CMake also provides Qt-based cross platform GUI, cmake-gui. Using it is trivial
+and does not require detailed explanations.
+
+### Configuring CMake
+
+You can pass additional options with `/D<parameter>=<value>` when you run
+`cmake` command. Some useful system options:
+
+* `CMAKE_C_FLAGS` - additional C compiler flags
+* `CMAKE_BUILD_TYPE` - configuration type, `DEBUG`, `RELEASE`, `RELWITHDEBINFO`
+  or `MINSIZEREL`. `DEBUG` is default
+* `CMAKE_INSTALL_PREFIX` - build install location, the same as `--prefix` option
+  of `configure` script
+
+ Useful libsndfile options:
+
+* `BUILD_SHARED_LIBS` - build shared library (DLL under Windows) when `ON`,
+  build static library othervise. This option is `OFF` by default.
+* `BUILD_PROGRAMS` - build libsndfile's utilities from `programs/` directory,
+  `ON` by default.
+* `BUILD_EXAMPLES` - build examples, `ON` by default.
+* `BUILD_TESTING` - build tests. Then you can run tests with `ctest` command,
+  `ON` by default. Setting `BUILD_SHARED_LIBS` to `ON` disables this option.
+* `ENABLE_EXTERNAL_LIBS` - enable Ogg, Vorbis, FLAC and Opus support. This
+  option is available and set to `ON` if all dependency libraries were found.
+* `ENABLE_MPEG` - MP3 support. This option is available and set to `ON` if all
+  dependency libraries were found.
+* `ENABLE_CPU_CLIP` - enable tricky cpu specific clipper. Enabled and set to
+  `ON` when CPU clips negative\positive. Don't touch it if you are not sure
+* `ENABLE_BOW_DOCS` - enable black-on-white documentation theme, `OFF` by
+  default.
+* `ENABLE_EXPERIMENTAL` - enable experimental code. Don't use it if you are
+  not sure. This option is `OFF` by default.
+* `ENABLE_CPACK` - enable [CPack](https://cmake.org/cmake/help/latest/module/CPack.html) support.
+  This option is `ON` by default.
+* `ENABLE_PACKAGE_CONFIG` - generate and install [package config file](https://cmake.org/cmake/help/latest/manual/cmake-packages.7.html#config-file-packages).
+* `INSTALL_PKGCONFIG_MODULE` - generate and install [pkg-config module](https://people.freedesktop.org/~dbn/pkg-config-guide.html).
+* `INSTALL_MANPAGES` - install [man pages](https://en.wikipedia.org/wiki/Man_page) for programs. This option is `ON` by  default
+* `ENABLE_STATIC_RUNTIME` - enable static runtime on Windows platform (MSVC and
+  MinGW), `OFF` by default.
+
+  **Note**: For MSVC compiler this option is deprecated for CMake >= 3.15, see
+  policy [CMP0091](https://cmake.org/cmake/help/latest/policy/CMP0091.html).
+  Use `CMAKE_MSVC_RUNTIME_LIBRARY` option instead.
+
+  **Note**: For MinGW toolchain this option is experimental. If you enabled it
+  and then disabled again, you need to clear CMake cache (delete CMakeCache.txt).
+* `ENABLE_COMPATIBLE_LIBSNDFILE_NAME` - set DLL name to `libsndfile-1.dll`
+  (canonical name) on Windows platform, `sndfile.dll` otherwise, `OFF` by
+  default. Library name can be different depending on platform. The well known
+  DLL name on Windows platform is `libsndfile-1.dll`, because the only way to
+  build Windows library before was MinGW toolchain with Autotools. This name
+  is native for MinGW ecosystem, Autotools constructs it using MinGW platform
+  rules from `sndfile` target. But when you build with CMake using native
+  Windows compiler, the name is `sndfile.dll`. This is name for native Windows
+  platform, because Windows has no library naming rules. It is preffered
+  because you can search library using package manager or CMake's
+  `find_library` command on any platform using the same `sndfile` name.
+
+* `ENABLE_SSE2` - add compiler flag to enable SSE2 if required, `ON` by default.
+
+  This option is for X86 and GCC compatible compilers configurations only.
+
+  If you compile for other SIMD set, e.g. AVX2, you may want to set
+  `ENABLE_SSE2` to `OFF`.
+
+  **Note**: This option is not active for X64 configuration, because SSE2 is
+  always available in this mode and all optimizations are enabled by default.
+
+Deprecated options:
+
+* `DISABLE_EXTERNAL_LIBS` - disable Ogg, Vorbis and FLAC support. Replaced by
+  `ENABLE_EXTERNAL_LIBS`
+* `DISABLE_CPU_CLIP` - disable tricky cpu specific clipper. Replaced by
+  `ENABLE_CPU_CLIP`
+* `BUILD_STATIC_LIBS` - build static library. Use `BUILD_SHARED_LIBS` instead
+
+### Linking from CMake projects
+
+First you need to add `FindOgg.cmake`, `FindVorbis.cmake`, `FindFLAC.cmake` and
+`FindOpus.cmake` files to some directory inside your CMake project (usually
+`cmake`) and add it to `CMAKE_MODULE_PATH`:
+
+    project(SomeApplication)
+    
+    list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
+
+Now you can search `libsndfile` library from your `CMakeLists.txt`
+ with this command:
+
+    find_package(SndFile)
+
+`SndFile_FOUND` is set to `ON` when library is found.
+
+If `libsndfile` dependency is critical, you can add `REQUIRED` to
+ `find_package`:
+
+    find_package(SndFile REQUIRED)
+
+With with option `find_package` will terminate configuration process
+ if `libsndfile` is not found.
+
+You can also add version check:
+
+    find_package(SndFile 1.0.29)
+
+`find_package` will report error, if `libsndfile` version is < 1.0.29.
+
+You can combine `REQUIRED` and version if you need.
+
+To link `libsndfile` library use:
+
+    target_link_libraries(my_application PRIVATE SndFile::sndfile)
+
+### Notes for Windows users
+
+#### System CRT library
+
+First advice about Visual Studio [system CRT libraries](https://docs.microsoft.com/en-us/cpp/c-runtime-library/c-run-time-library-reference?view=vs-2019),
+it is system code linked as static or dynamic library to every C application.
+
+You can find related option in Visual Studio project properties:
+
+    C/C++ -> Code Generation -> Runtime Library
+
+Dynamic version of system CRT library is default and it means that end user needs
+to have the same runtime library installed on his system. Most likely it is so,
+but if it is not, the user will see this error message using libsndfile DLL:
+
+    "The program can't start because <crt-dll-name>.dll is missing from your computer. Try reinstalling the program to fix this problem. "
+
+To avoid this, you may want to enable static CRT library linking. In this case
+the size of your DLL will increase slightly the size will increase slightly, but
+you can redistribute the libsndfile DLL without having to install the correct
+version of the system CRT library.
+
+CMake project will use dynamic system CRT libraries by default, just like
+Visual Studio does. But you can change it using `ENABLE_STATIC_RUNTIME` or
+`CMAKE_MSVC_RUNTIME_LIBRARY` options.
+
+**Note**: You cannot use both options at the same time, it will lead to a
+configuration error.
+
+If you have CMake >= 3.15 you should use
+[`CMAKE_MSVC_RUNTIME_LIBRARY`](https://cmake.org/cmake/help/v3.15/variable/CMAKE_MSVC_RUNTIME_LIBRARY.html) option.
+
+This will enable static linking:
+
+    cmake .. -D"MultiThreaded$<$<CONFIG:Debug>:Debug>"
+
+You can use libsndfile `ENABLE_STATIC_RUNTIME` option to to control CRT library
+linking for CMake project: `OFF` or unset (default) for dynamic, and `ON` for
+static linking:
+
+    cmake .. -DENABLE_STATIC_RUNTIME=ON
+
+**Note**: This option is deprecated and may be removed in far future because we
+have standard option `CMAKE_MSVC_RUNTIME_LIBRARY` now.
+
+#### Using Vcpkg package manager
+
+Second advice is about Ogg, Vorbis FLAC and Opus support. Searching external
+libraries under Windows is a little bit tricky. The best way is to use
+[Vcpkg](https://github.com/Microsoft/vcpkg).
+
+Install Vcpkg and then add this parameter to cmake command line:
+
+    -DCMAKE_TOOLCHAIN_FILE=<path-to-vcpkg>/scripts/buildsystems/vcpkg.cmake
+
+You also need to set `VCPKG_TARGET_TRIPLET` if you want to use static libraries:
+
+    -DVCPKG_TARGET_TRIPLET=x64-windows-static
+
+Then you need to install static libogg, libvorbis, libflac, libopus, mpg123 and
+mp3lame Vcpkg packages.
+
+After 1.1.0beta2 you don't need to install dependencies manually. Libsndfile
+now supports [Vcpkg manifest mode](https://vcpkg.readthedocs.io/en/latest/users/manifests/)
+and all dependencies are installed automatically.
+
+However, you can turn off the manifest mode and return to the classic mode using
+the `VCPKG_MANIFEST_MODE` parameter from the command line:
+
+    -DVCPKG_MANIFEST_MODE=OFF
+
+In classic mode, you need to install the required libraries manually:
+
+    vcpkg install libvorbis:x64-windows-static libflac:x64-windows-static
+    opus:x64-windows-static mp3lame:x86-windows-static mpg123:x86-windows-static
+    libvorbis:x86-windows-static libflac:x86-windows-static
+    opus:x86-windows-static mp3lame:x86-windows-static mpg123:x86-windows-static
+
+**Note**: Use must use the same CRT library for external libraries and the
+libsndfile library itself. For `*-static` triplets Vcpkg uses
+[static CRT](https://vcpkg.readthedocs.io/en/latest/users/triplets/).
+
+## Submitting Patches
+
+See [CONTRIBUTING.md](CONTRIBUTING.md) for details.
+
+[brew]: http://brew.sh/
+[github]: http://libsndfile.github.io/libsndfile/
+[BuildingForAndroid]: https://github.com/libsndfile/libsndfile/blob/master/Building-for-Android.md

extern/libsndfile-modified/SECURITY.md

@@ -0,0 +1,11 @@
+# Security Policy
+
+## Supported Versions
+
+| Version | Supported          |
+| ------- | ------------------ |
+| 1.1.x   | :white_check_mark: |
+
+## Reporting a Vulnerability
+
+Please send report privately to evpobr@gmail.com, and include how would you like to be credited.

extern/libsndfile-modified/Scripts/android-configure.sh

@@ -0,0 +1,96 @@
+#!/bin/bash -e
+
+# Copyright (C) 2013-2016 Erik de Castro Lopo <erikd@mega-nerd.com>
+#
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Neither the author nor the names of any contributors may be used
+#       to endorse or promote products derived from this software without
+#       specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Android NDK version number; eg r10, r10b  etc
+ANDROID_NDK_VER=${ANDROID_NDK_VER:-r10}
+
+# Android NDK gcc version; eg 4.8, 4.9 etc.
+ANDROID_GCC_VER=${ANDROID_GCC_VER:-4.9}
+
+# Android API version; eg 14 (Android 4.0), 21 (Android 5.0)  etc.
+ANDROID_API_VER=${ANDROID_API_VER:-14}
+
+ANDROID_TARGET=${ANDROID_TARGET:-arm-linux-androideabi}
+
+if test -z ${ANDROID_TOOLCHAIN_HOME} ; then
+	echo "Environment variable ANDROID_TOOLCHAIN_HOME not defined."
+	echo "This should point to the directory containing the Android NDK."
+    exit 1
+	fi
+
+#-------------------------------------------------------------------------------
+# No more user config beyond here.
+
+BUILD_MACHINE=$(uname -s | tr 'A-Z' 'a-z')-$(uname -m)
+
+function die_with {
+	echo $1
+	exit 1
+}
+
+export CROSS_COMPILE=${ANDROID_TARGET}
+
+# Don't forget to adjust this to your NDK path
+export ANDROID_NDK=${ANDROID_TOOLCHAIN_HOME}/android-ndk-${ANDROID_NDK_VER}
+test -d ${ANDROID_NDK} || die_with "Error : ANDROID_NDK '$ANDROID_NDK' does not exist."
+
+export ANDROID_PREFIX=${ANDROID_NDK}/toolchains/arm-linux-androideabi-${ANDROID_GCC_VER}/prebuilt/${BUILD_MACHINE}
+test -d ${ANDROID_PREFIX} || die_with "Error : ANDROID_PREFIX '$ANDROID_PREFIX' does not exist."
+
+export SYSROOT=${ANDROID_NDK}/platforms/android-${ANDROID_API_VER}/arch-arm
+test -d ${SYSROOT} || die_with "Error : SYSROOT '$SYSROOT' does not exist."
+
+export CROSS_PREFIX=${ANDROID_PREFIX}/bin/${CROSS_COMPILE}
+test -f ${CROSS_PREFIX}-gcc || die_with "Error : CROSS_PREFIX compiler '${CROSS_PREFIX}-gcc' does not exist."
+
+
+# Non-exhaustive lists of compiler + binutils
+# Depending on what you compile, you might need more binutils than that
+export CPP=${CROSS_PREFIX}-cpp
+export AR=${CROSS_PREFIX}-ar
+export AS=${CROSS_PREFIX}-as
+export NM=${CROSS_PREFIX}-nm
+export CC=${CROSS_PREFIX}-gcc
+export CXX=${CROSS_PREFIX}-g++
+export LD=${CROSS_PREFIX}-ld
+export RANLIB=${CROSS_PREFIX}-ranlib
+
+# Don't mix up .pc files from your host and build target
+export PKG_CONFIG_PATH=${PREFIX}/lib/pkgconfig
+
+# Set up the needed FLAGS.
+export CFLAGS="${CFLAGS} -gstabs --sysroot=${SYSROOT} -I${SYSROOT}/usr/include -I${ANDROID_PREFIX}/include"
+export CXXFLAGS="${CXXFLAGS} -gstabs -fno-exceptions --sysroot=${SYSROOT} -I${SYSROOT}/usr/include -I${ANDROID_PREFIX}/include -I${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/${ANDROID_GCC_VER}/include/ -I${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/${ANDROID_GCC_VER}/libs/armeabi/include"
+
+export CPPFLAGS="${CFLAGS}"
+export LDFLAGS="${LDFLAGS} -L${SYSROOT}/usr/lib -L${ANDROID_PREFIX}/lib"
+
+# Create a symlink to the gdbclient.
+test -h gdbclient || ln -s ${ANDROID_PREFIX}/bin/arm-linux-androideabi-gdb gdbclient
+
+./configure --host=${CROSS_COMPILE} --with-sysroot=${SYSROOT} "$@"

extern/libsndfile-modified/Scripts/asan-configure.sh

@@ -0,0 +1,4 @@
+#!/bin/bash -eu
+
+CFLAGS="-fsanitize=address -g" CXXFLAGS=${CFLAGS} ./configure
+

extern/libsndfile-modified/Scripts/build-test-tarball.mk.in

@@ -0,0 +1,61 @@
+#!/usr/bin/make -f
+
+# This is probably only going to work with GNU Make.
+# This in a separate file instead of in Makefile.am because Automake complains
+# about the GNU Make-isms.
+
+EXEEXT = @EXEEXT@
+
+PACKAGE_VERSION = @PACKAGE_VERSION@
+
+HOST_TRIPLET = @HOST_TRIPLET@
+
+SRC_BINDIR = @SRC_BINDIR@
+TEST_BINDIR = @TEST_BINDIR@
+
+LIBRARY := $(SRC_BINDIR)libsndfile.so.$(LIB_VERSION)
+
+LIB_VERSION := $(shell echo $(PACKAGE_VERSION) | sed -e 's/[a-z].*//')
+
+TESTNAME = libsndfile-testsuite-$(HOST_TRIPLET)-$(PACKAGE_VERSION)
+
+TARBALL = $(TESTNAME).tar.gz
+
+# Find the test programs by grepping the script for the programs it executes.
+testprogs := $(shell grep '^\./' tests/test_wrapper.sh | sed -e "s|./||" -e "s/ .*//" | sort | uniq)
+# Also add the programs not found by the above.
+testprogs += tests/sfversion$(EXEEXT) tests/stdin_test$(EXEEXT) tests/stdout_test$(EXEEXT) \
+				tests/cpp_test$(EXEEXT) tests/win32_test$(EXEEXT)
+
+libfiles := $(shell if test ! -z $(EXEEXT) ; then echo "src/libsndfile-1.def src/.libs/libsndfile-1.dll" ; elif test -f $(LIBRARY) ; then echo $(LIBRARY) ; fi  ; fi)
+
+testbins := $(testprogs) $(libfiles)
+
+all : $(TARBALL)
+
+clean :
+	rm -rf $(TARBALL) $(TESTNAME)/
+
+check : $(TESTNAME)/test_wrapper.sh
+	(cd ./$(TESTNAME)/ && ./test_wrapper.sh)
+
+$(TARBALL) : $(TESTNAME)/test_wrapper.sh
+	tar zcf $@ $(TESTNAME)
+	rm -rf $(TESTNAME)
+	@echo
+	@echo "Created : $(TARBALL)"
+	@echo
+
+$(TESTNAME)/test_wrapper.sh : tests/test_wrapper.sh tests/pedantic-header-test.sh
+	rm -rf $(TESTNAME)
+	mkdir -p $(TESTNAME)/tests/
+	echo
+	echo $(testbins)
+	echo
+	cp $(testbins) $(TESTNAME)/tests/
+	cp tests/test_wrapper.sh $(TESTNAME)/
+	cp tests/pedantic-header-test.sh $(TESTNAME)/tests/
+	chmod u+x $@
+
+tests/test_wrapper.sh : tests/test_wrapper.sh.in
+	make $@

extern/libsndfile-modified/Scripts/clang-sanitize.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+# This is known to work with clang-3.4 from Debian testing/unstable.
+# 2013/07/14
+
+export CC=clang
+export CXX=clang++
+export CFLAGS="-O3 -fsanitize=address,integer,undefined"
+export CXXFLAGS="-O3 -fsanitize=address,integer,undefined"
+
+./configure --enable-gcc-werror
+
+make clean all check

extern/libsndfile-modified/Scripts/cmake-build.sh

@@ -0,0 +1,9 @@
+#!/bin/bash -eu
+
+rm -rf CMakeCache.txt CMakeFiles/ _Build
+
+mkdir _Build
+cd _Build
+cmake ..
+cmake --build .
+ctest -V

extern/libsndfile-modified/Scripts/cstyle.py

@@ -0,0 +1,256 @@
+#!/usr/bin/python -tt
+#
+# Copyright (C) 2005-2017 Erik de Castro Lopo <erikd@mega-nerd.com>
+#
+# Released under the 2 clause BSD license.
+
+"""
+This program checks C code for compliance to coding standards used in
+libsndfile and other projects I run.
+"""
+
+import re
+import sys
+
+
+class Preprocessor:
+	"""
+	Preprocess lines of C code to make it easier for the CStyleChecker class to
+	test for correctness. Preprocessing works on a single line at a time but
+	maintains state between consecutive lines so it can preprocessess multi-line
+	comments.
+	Preprocessing involves:
+	  - Strip C++ style comments from a line.
+	  - Strip C comments from a series of lines. When a C comment starts and
+	    ends on the same line it will be replaced with 'comment'.
+	  - Replace arbitrary C strings with the zero length string.
+	  - Replace '#define f(x)' with '#define f (c)' (The C #define requires that
+	    there be no space between defined macro name and the open paren of the
+	    argument list).
+	Used by the CStyleChecker class.
+	"""
+	def __init__ (self):
+		self.comment_nest = 0
+		self.leading_space_re = re.compile ('^(\t+| )')
+		self.trailing_space_re = re.compile ('(\t+| )$')
+		self.define_hack_re = re.compile ("(#\s*define\s+[a-zA-Z0-9_]+)\(")
+
+	def comment_nesting (self):
+		"""
+		Return the currect comment nesting. At the start and end of the file,
+		this value should be zero. Inside C comments it should be 1 or
+		(possibly) more.
+		"""
+		return self.comment_nest
+
+	def __call__ (self, line):
+		"""
+		Strip the provided line of C and C++ comments. Stripping of multi-line
+		C comments works as expected.
+		"""
+
+		line = self.define_hack_re.sub (r'\1 (', line)
+
+		line = self.process_strings (line)
+
+		# Strip C++ style comments.
+		if self.comment_nest == 0:
+			line = re.sub ("( |\t*)//.*", '', line)
+
+		# Strip C style comments.
+		open_comment = line.find ('/*')
+		close_comment = line.find ('*/')
+
+		if self.comment_nest > 0 and close_comment < 0:
+			# Inside a comment block that does not close on this line.
+			return ""
+
+		if open_comment >= 0 and close_comment < 0:
+			# A comment begins on this line but doesn't close on this line.
+			self.comment_nest += 1
+			return self.trailing_space_re.sub ('', line [:open_comment])
+
+		if open_comment < 0 and close_comment >= 0:
+			# Currently open comment ends on this line.
+			self.comment_nest -= 1
+			return self.trailing_space_re.sub ('', line [close_comment + 2:])
+
+		if open_comment >= 0 and close_comment > 0 and self.comment_nest == 0:
+			# Comment begins and ends on this line. Replace it with 'comment'
+			# so we don't need to check whitespace before and after the comment
+			# we're removing.
+			newline = line [:open_comment] + "comment" + line [close_comment + 2:]
+			return self.__call__ (newline)
+
+		return line
+
+	def process_strings (self, line):
+		"""
+		Given a line of C code, return a string where all literal C strings have
+		been replaced with the empty string literal "".
+		"""
+		for k in range (0, len (line)):
+			if line [k] == '"':
+				start = k
+				for k in range (start + 1, len (line)):
+					if line [k] == '"' and line [k - 1] != '\\':
+						return line [:start + 1] + '"' + self.process_strings (line [k + 1:])
+		return line
+
+
+class CStyleChecker:
+	"""
+	A class for checking the whitespace and layout of a C code.
+	"""
+	def __init__ (self, debug):
+		self.debug = debug
+		self.filename = None
+		self.error_count = 0
+		self.line_num = 1
+		self.orig_line = ''
+		self.trailing_newline_re = re.compile ('[\r\n]+$')
+		self.indent_re = re.compile ("^\s*")
+		self.last_line_indent = ""
+		self.last_line_indent_curly = False
+		self.re_checks = \
+			[ ( re.compile ("  "),		"multiple space instead of tab" )
+			, ( re.compile ("\t "), 	"space after tab" )
+			, ( re.compile ("[^ ];"),	"missing space before semi-colon" )
+			, ( re.compile ("{[^\s}]"),	"missing space after open brace" )
+			, ( re.compile ("[^{\s]}"),	"missing space before close brace" )
+			, ( re.compile ("[ \t]+$"),	"contains trailing whitespace" )
+
+			, ( re.compile (",[^\s\n]"),		"missing space after comma" )
+			, ( re.compile (";[^\s]"), 	"missing space after semi-colon" )
+			, ( re.compile ("=[^\s\"'=]"),		"missing space after assignment" )
+
+			# Open and close parenthesis.
+			, ( re.compile ("[^\s\(\[\*&']\("),				"missing space before open parenthesis" )
+			, ( re.compile ("\)(-[^>]|[^,'\s\n\)\]-])"),	"missing space after close parenthesis" )
+			, ( re.compile ("\s(do|for|if|when)\s.*{$"),	"trailing open parenthesis at end of line" )
+			, ( re.compile ("\( [^;]"),						"space after open parenthesis" )
+			, ( re.compile ("[^;] \)"),						"space before close parenthesis" )
+
+			# Open and close square brace.
+			, ( re.compile ("[^\s\(\]]\["),			"missing space before open square brace" )
+			, ( re.compile ("\][^,\)\]\[\s\.-]"),	"missing space after close square brace" )
+			, ( re.compile ("\[ "),					"space after open square brace" )
+			, ( re.compile (" \]"),					"space before close square brace" )
+
+			# Space around operators.
+			, ( re.compile ("[^\s][\*/%+-][=][^\s]"),		"missing space around opassign" )
+			, ( re.compile ("[^\s][<>!=^/][=]{1,2}[^\s]"),	"missing space around comparison" )
+
+			# Parens around single argument to return.
+			, ( re.compile ("\s+return\s+\([a-zA-Z0-9_]+\)\s+;"),	"parens around return value" )
+
+			# Parens around single case argument.
+			, ( re.compile ("\s+case\s+\([a-zA-Z0-9_]+\)\s+:"),	"parens around single case argument" )
+
+			# Open curly at end of line.
+			, ( re.compile ("\)\s*{\s*$"),	"open curly brace at end of line" )
+
+			# Pre and post increment/decrment.
+			, ( re.compile ("[^\(\[][+-]{2}[a-zA-Z0-9_]"),       "space after pre increment/decrement" )
+			, ( re.compile ("[a-zA-Z0-9_][+-]{2}[^\)\,]]"),       "space before post increment/decrement" )
+			]
+
+	def get_error_count (self):
+		"""
+		Return the current error count for this CStyleChecker object.
+		"""
+		return self.error_count
+
+	def check_files (self, files):
+		"""
+		Run the style checker on all the specified files.
+		"""
+		for filename in files:
+			self.check_file (filename)
+
+	def check_file (self, filename):
+		"""
+		Run the style checker on the specified file.
+		"""
+		self.filename = filename
+		cfile = open (filename, "r")
+
+		self.line_num = 1
+
+		preprocess = Preprocessor ()
+		while 1:
+			line = cfile.readline ()
+			if not line:
+				break
+
+			line = self.trailing_newline_re.sub ('', line)
+			self.orig_line = line
+
+			self.line_checks (preprocess (line))
+
+			self.line_num += 1
+
+		cfile.close ()
+		self.filename = None
+
+		# Check for errors finding comments.
+		if preprocess.comment_nesting () != 0:
+			print ("Weird, comments nested incorrectly.")
+			sys.exit (1)
+
+		return
+
+	def line_checks (self, line):
+		"""
+		Run the style checker on provided line of text, but within the context
+		of how the line fits within the file.
+		"""
+
+		indent = len (self.indent_re.search (line).group ())
+		if re.search ("^\s+}", line):
+			if not self.last_line_indent_curly and indent != self.last_line_indent:
+				None	# self.error ("bad indent on close curly brace")
+			self.last_line_indent_curly = True
+		else:
+			self.last_line_indent_curly = False
+
+		# Now all the regex checks.
+		for (check_re, msg) in self.re_checks:
+			if check_re.search (line):
+				self.error (msg)
+
+		if re.search ("[a-zA-Z0-9][<>!=^/&\|]{1,2}[a-zA-Z0-9]", line):
+			if not re.search (".*#include.*[a-zA-Z0-9]/[a-zA-Z]", line):
+				self.error ("missing space around operator")
+
+		self.last_line_indent = indent
+		return
+
+	def error (self, msg):
+		"""
+		Print an error message and increment the error count.
+		"""
+		print ("%s (%d) : %s" % (self.filename, self.line_num, msg))
+		if self.debug:
+			print ("'" + self.orig_line + "'")
+		self.error_count += 1
+
+#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+
+if len (sys.argv) < 1:
+	print ("Usage : yada yada")
+	sys.exit (1)
+
+# Create a new CStyleChecker object
+if sys.argv [1] == '-d' or sys.argv [1] == '--debug':
+	cstyle = CStyleChecker (True)
+	cstyle.check_files (sys.argv [2:])
+else:
+	cstyle = CStyleChecker (False)
+	cstyle.check_files (sys.argv [1:])
+
+
+if cstyle.get_error_count ():
+	sys.exit (1)
+
+sys.exit (0)

extern/libsndfile-modified/Scripts/git-pre-commit-hook

@@ -0,0 +1,84 @@
+#!/bin/sh
+
+if git rev-parse --verify HEAD >/dev/null 2>&1 ; then
+	against=HEAD
+else
+	# Initial commit: diff against an empty tree object
+	against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
+	fi
+
+# Redirect output to stderr.
+exec 1>&2
+
+#-------------------------------------------------------------------------------
+# Prevent files with non-ascii filenames from being committed.
+
+if test $(git diff --cached --name-only --diff-filter=A -z $against | LC_ALL=C tr -d '[ -~]\0' | wc -c) != 0 ; then
+	echo "Error: Attempt to add a non-ascii file name."
+	echo
+	echo "This can cause problems if you want to work"
+	echo "with people on other platforms."
+	echo
+	echo "To be portable it is advisable to rename the file ..."
+	echo
+	echo "Commit aborted."
+	exit 1
+	fi
+
+#-------------------------------------------------------------------------------
+# Check the formatting of all C files.
+
+# http://man.openbsd.org/sed#r
+# http://man.openbsd.org/sed#E
+# http://netbsd.gw.com/cgi-bin/man-cgi?sed++NetBSD-current
+# https://github.com/freebsd/freebsd/blob/master/usr.bin/sed/main.c
+# http://git.savannah.gnu.org/gitweb/?p=sed.git;a=blob;f=sed/sed.c
+# GNU has -r and -E (undocumented); MacOS has -E but not -r; Sunos has neither.
+files=$(git diff-index --name-status --cached HEAD | grep -v ^D | sed -E "s/^[A-Z]+[A-Z0-9]*[ \t]+/ /")
+
+cfiles=""
+for f in $files ; do
+	if test `dirname $f` = "src/ALAC" ; then
+		echo "Skipping cstyle checking on $f"
+	elif test `echo $f | grep -c "\.[ch]$"` -gt 0 ; then
+		cfiles="$cfiles $f"
+		fi
+	done
+
+if test -n "$cfiles" ; then
+	Scripts/cstyle.py $cfiles
+	if test $? -ne 0 ; then
+		echo
+		echo "Commit aborted. Fix the above error before trying again."
+		exit 1
+		fi
+	fi
+
+#-------------------------------------------------------------------------------
+# Check the copyright notice of all files to be commited.
+
+user=`git config --global user.email`
+year=`date +"%Y"`
+
+missing_copyright_year=""
+if test $user = "erikd@mega-nerd.com" ; then
+	for f in $files ; do
+		if test `head -5 $f | grep -i copyright | grep -c -i $user` -gt 0 ; then
+			user_copyright=`grep -i copyright $f | grep $user | grep -c $year`
+			if test $user_copyright -lt 1 ; then
+				missing_copyright_year="$missing_copyright_year $f"
+				fi
+			fi
+		done
+	fi
+
+if test -n "$missing_copyright_year" ; then
+	echo "Missing current year in the copyright notice of the following files:"
+	for f in $missing_copyright_year ; do
+		echo "    $f"
+		done
+	echo "Commit aborted."
+	exit 1
+	fi
+
+exit 0

extern/libsndfile-modified/Scripts/linux-to-win-cross-configure.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+case "$1" in
+	w32)
+		compiler_name=i686-w64-mingw32
+		;;
+	w64)
+		compiler_name=x86_64-w64-mingw32
+		;;
+	*)
+		echo "$0 (w32|w64) <other args>"
+		exit 0
+		;;
+	esac
+
+shift
+
+build_cpu=$(dpkg-architecture -qDEB_BUILD_GNU_CPU)
+build_host=$build_cpu-linux
+
+./configure --host=$compiler_name --target=$compiler_name --build=$build_host \
+		--program-prefix='' --disable-sqlite --disable-static $@

extern/libsndfile-modified/Scripts/static-deps-build.mk

@@ -0,0 +1,125 @@
+#!/usr/bin/make -f
+
+# If this is set to true (via the environment) then CRC checking will be
+# disabled in libogg giving fuzzers a better chance at finding something.
+disable_ogg_crc ?= false
+
+# Build libsndfile as a dynamic/shared library, but statically link to
+# libFLAC, libogg, libopus and libvorbis
+
+ogg_version = libogg-1.3.4
+ogg_sha256sum = c163bc12bc300c401b6aa35907ac682671ea376f13ae0969a220f7ddf71893fe
+
+vorbis_version = libvorbis-1.3.7
+vorbis_sha256sum = b33cc4934322bcbf6efcbacf49e3ca01aadbea4114ec9589d1b1e9d20f72954b
+
+flac_version = flac-1.3.3
+flac_sha256sum = 213e82bd716c9de6db2f98bcadbc4c24c7e2efe8c75939a1a84e28539c4e1748
+
+opus_version = opus-1.3.1
+opus_sha256sum = 65b58e1e25b2a114157014736a3d9dfeaad8d41be1c8179866f144a2fb44ff9d
+
+#-------------------------------------------------------------------------------
+# Code follows.
+
+ogg_tarball = $(ogg_version).tar.xz
+vorbis_tarball = $(vorbis_version).tar.xz
+flac_tarball = $(flac_version).tar.xz
+opus_tarball = $(opus_version).tar.gz
+
+download_url = http://downloads.xiph.org/releases/
+tarball_dir = Build/Tarballs
+stamp_dir = Build/Stamp
+
+build_dir = $(shell pwd)/Build
+config_options = --prefix=$(build_dir) --disable-shared --enable-option-checking
+
+pwd = $(shell pwd)
+
+help :
+	@echo
+	@echo "This script will build libsndfile as a dynamic/shared library but statically linked"
+	@echo "to libFLAC, libogg and libvorbis. It should work on Linux and Mac OS X. It might"
+	@echo "work on Windows with a correctly set up MinGW."
+	@echo
+	@echo "It requires all the normal build tools require to build libsndfile plus wget."
+	@echo
+
+config : Build/Stamp/configure
+
+build : Build/Stamp/build
+
+clean :
+	rm -rf Build/flac-* Build/libogg-* Build/libvorbis-* Build/opus-*
+	rm -rf Build/bin Build/include Build/lib Build/share
+	rm -f Build/Stamp/install Build/Stamp/extract Build/Stamp/sha256sum Build/Stamp/build-ogg
+
+Build/Stamp/init :
+	mkdir -p $(stamp_dir) $(tarball_dir)
+	touch $@
+
+Build/Tarballs/$(flac_tarball) : Build/Stamp/init
+	(cd $(tarball_dir) && wget $(download_url)flac/$(flac_tarball) -O $(flac_tarball))
+	touch $@
+
+Build/Tarballs/$(ogg_tarball) : Build/Stamp/init
+	(cd $(tarball_dir) && wget $(download_url)ogg/$(ogg_tarball) -O $(ogg_tarball))
+	touch $@
+
+Build/Tarballs/$(vorbis_tarball) : Build/Stamp/init
+	(cd $(tarball_dir) && wget $(download_url)vorbis/$(vorbis_tarball) -O $(vorbis_tarball))
+	touch $@
+
+Build/Tarballs/$(opus_tarball) : Build/Stamp/init
+	(cd $(tarball_dir) && wget https://archive.mozilla.org/pub/opus/$(opus_tarball) -O $(opus_tarball))
+	touch $@
+
+Build/Stamp/tarballs : Build/Tarballs/$(flac_tarball) Build/Tarballs/$(ogg_tarball) Build/Tarballs/$(vorbis_tarball) Build/Tarballs/$(opus_tarball)
+	touch $@
+
+Build/Stamp/sha256sum : Build/Stamp/tarballs
+	test `sha256sum $(tarball_dir)/$(ogg_tarball) | sed "s/ .*//"` = $(ogg_sha256sum)
+	test `sha256sum $(tarball_dir)/$(vorbis_tarball) | sed "s/ .*//"` = $(vorbis_sha256sum)
+	test `sha256sum $(tarball_dir)/$(flac_tarball) | sed "s/ .*//"` = $(flac_sha256sum)
+	test `sha256sum $(tarball_dir)/$(opus_tarball) | sed "s/ .*//"` = $(opus_sha256sum)
+	touch $@
+
+Build/Stamp/extract : Build/Stamp/sha256sum
+	# (cd Build && tar xf Tarballs/$(ogg_tarball))
+	(cd Build && tar xf Tarballs/$(flac_tarball))
+	(cd Build && tar xf Tarballs/$(vorbis_tarball))
+	(cd Build && tar xf Tarballs/$(opus_tarball))
+	touch $@
+
+Build/Stamp/build-ogg : Build/Stamp/sha256sum
+ifeq ($(disable_ogg_crc), true)
+	echo "Ogg/CRC enabled"
+	(cd Build && git clone https://github.com/xiph/ogg $(ogg_version))
+	(cd Build/$(ogg_version) && autoreconf -vif && CFLAGS=-fPIC ./configure $(config_options) --disable-crc && make all install)
+else
+	echo "Ogg/CRC disabled"
+	(cd Build && tar xf Tarballs/$(ogg_tarball))
+	(cd Build/$(ogg_version) && CFLAGS=-fPIC ./configure $(config_options) && make all install)
+endif
+	touch $@
+
+Build/Stamp/install-libs : Build/Stamp/extract Build/Stamp/build-ogg
+	(cd Build/$(vorbis_version) && CFLAGS=-fPIC ./configure $(config_options) && make all install)
+	(cd Build/$(flac_version) && CFLAGS=-fPIC ./configure $(config_options) && make all install)
+	(cd Build/$(opus_version) && CFLAGS=-fPIC ./configure $(config_options) && make all install)
+	touch $@
+
+configure : configure.ac
+	autoreconf -vif
+
+Build/Stamp/configure : Build/Stamp/install-libs configure
+	PKG_CONFIG_LIBDIR=Build/lib/pkgconfig ./configure
+	sed -i 's#^EXTERNAL_XIPH_CFLAGS.*#EXTERNAL_XIPH_CFLAGS = -I$(pwd)/Build/include#' Makefile
+	sed -i 's#^EXTERNAL_XIPH_LIBS.*#EXTERNAL_XIPH_LIBS = -static $(pwd)/Build/lib/libFLAC.la $(pwd)/Build/lib/libvorbis.la $(pwd)/Build/lib/libvorbisenc.la $(pwd)/Build/lib/libopus.la $(pwd)/Build/lib/libogg.la -dynamic #' Makefile
+	make clean
+	touch $@
+
+Build/Stamp/build : Build/Stamp/configure
+	make all check
+	touch $@
+

extern/libsndfile-modified/Win32/README-precompiled-dll.txt

@@ -0,0 +1,40 @@
+Notes on Using the Pre-compiled libsndfile DLL.
+===============================================
+
+In order to use this pre-compiled DLL with Visual Studio, you will need to
+generate a .LIB file from the DLL.
+
+This can be achieved as follows:
+
+  1) In a CMD window, change to the directory containing this file and
+     run the command:
+
+          lib /machine:i386 /def:libsndfile-1.def
+
+You now have two files:
+
+        libsndfile-1.dll
+        libsndfile-1.lib
+
+to be used with VisualStudio.
+
+If the lib command fails with a command saying "'lib' is not recognized as
+an internal or external command, operable program or batch file", you need
+to find the location of "lib.exe" and add that directory to your PATH
+environment variable. Another alternative is to use the "Visual Studio 2005
+Command Prompt" Start menu item:
+
+   Start ->
+   		All Programs ->
+			Visual Studio 2005 ->
+				Visual Studio Tools ->
+					Visual Studio 2005 Command Prompt
+
+If for some reason these instructions don't work for you or you are still
+not able to use the libsndfile DLL with you project, please do not contact
+the main author of libsndfile. Instead, join the libsndfile-users mailing
+list :
+
+        http://www.mega-nerd.com/libsndfile/lists.html
+
+and ask a question there.

extern/libsndfile-modified/Win32/testprog.c

@@ -0,0 +1,16 @@
+/*	Simple test program to make sure that Win32 linking to libsndfile is
+**	working.
+*/
+
+#include <stdio.h>
+
+#include "sndfile.h"
+
+int
+main (void)
+{	static char strbuffer [256] ;
+	sf_command (NULL, SFC_GET_LIB_VERSION, strbuffer, sizeof (strbuffer)) ;
+	puts (strbuffer) ;
+	return 0 ;
+}
+

extern/libsndfile-modified/cmake/CMakeAutoGen.cmake

@@ -0,0 +1,46 @@
+# CMake implementation of AutoGen
+# Copyright (C) 2017 Anonymous Maarten <anonymous.maarten@gmail.com>
+
+set(AUTOGEN_SCRIPT "${CMAKE_MODULE_PATH}/CMakeAutoGenScript.cmake")
+
+function(lsf_autogen DIR_REL NAME_WE)
+	set(EXTS ${ARGN})
+	set(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/${DIR_REL}/${NAME_WE}.def")
+	set(OUTPUTS)
+	foreach(EXT ${EXTS})
+		list(APPEND OUTPUTS "${NAME_WE}.${EXT}")
+	endforeach()
+	add_autogen_target("${INPUT}" "${CMAKE_CURRENT_BINARY_DIR}/${DIR_REL}" ${OUTPUTS})
+endfunction()
+
+function(add_autogen_target INPUT OUTPUTDIR)
+	set(OUTPUTFILES "${ARGN}")
+
+	if (OUTPUTDIR)
+		set(PREFIX "${OUTPUTDIR}/")
+	else()
+		set(PREFIX "")
+	endif()
+
+	set(ARTIFACTS)
+	foreach(OUTPUTFILE ${OUTPUTFILES})
+		list(APPEND ARTIFACTS "${PREFIX}${OUTPUTFILE}")
+	endforeach()
+
+	set(EXTRA_ARGS)
+	if (AUTOGEN_DEBUG)
+		list(APPEND EXTRA_ARGS "-DDEBUG=1")
+	endif()
+	if (OUTPUTDIR)
+		list(APPEND EXTRA_ARGS "-DOUTPUTDIR=${OUTPUTDIR}")
+	endif()
+
+	add_custom_command(
+		OUTPUT ${ARTIFACTS}
+		COMMAND ${CMAKE_COMMAND} "-DDEFINITION=${INPUT}" ${EXTRA_ARGS} -P "${AUTOGEN_SCRIPT}"
+		MAIN_DEPENDENCY "${INPUT}"
+		DEPENDS "${AUTOGEN_SCRIPT}"
+		COMMENT "CMakeAutoGen: generating ${OUTPUTFILES}"
+		WORKING_DIRECTORY "${CMAKE_BINARY_DIR}"
+	)
+endfunction()

extern/libsndfile-modified/cmake/CMakeAutoGenScript.cmake

@@ -0,0 +1,442 @@
+# CMake implementation of AutoGen
+# Copyright (C) 2017 Anonymous Maarten <anonymous.maarten@gmail.com>
+
+set(WS " \t\r\n")
+
+function(cutoff_first_occurrence TEXT OCCURRENCE RESULT)
+    string(FIND "${TEXT}" "${OCCURRENCE}" OCCURRENCE_INDEX)
+    if (OCCURRENCE_INDEX EQUAL -1)
+        set(${TEXT} "" PARENT_SCOPE)
+        return()
+    endif()
+
+    string(LENGTH "${OCCURRENCE}" OCCURRENCE_LENGTH)
+    math(EXPR CUTOFF_INDEX "${OCCURRENCE_INDEX}+${OCCURRENCE_LENGTH}")
+    string(SUBSTRING "${TEXT}" ${CUTOFF_INDEX} -1 TEXT_REMAINDER)
+    set(${RESULT} "${TEXT_REMAINDER}" PARENT_SCOPE)
+
+    endfunction()
+
+function(read_definition DEFINITION_FILENAME TEMPLATE_FILENAME DATA)
+    file(READ "${DEFINITION_FILENAME}" DEFINITION_CONTENTS)
+
+    string(REGEX MATCH "autogen definitions ([a-zA-Z\\._-]+);[${WS}]*" TEMPLATE_MATCH "${DEFINITION_CONTENTS}")
+    if (NOT TEMPLATE_MATCH)
+        message(FATAL_ERROR "${DEFINITION_FILENAME} doest not contain an AutoGen definition.")
+    endif()
+
+    get_filename_component(DEFINITION_DIR "${DEFINITION_FILENAME}" PATH)
+    set(${TEMPLATE_FILENAME} "${DEFINITION_DIR}/${CMAKE_MATCH_1}" PARENT_SCOPE)
+    if (DEBUG)
+        message("found: TEMPLATE_FILENAME=${CMAKE_MATCH_1}")
+    endif()
+
+    cutoff_first_occurrence("${DEFINITION_CONTENTS}" "${TEMPLATE_MATCH}" DEFINITION_CONTENTS)
+
+    set(DEFINITION "")
+
+    while (1)
+        string(REGEX MATCH "([a-zA-Z_][a-zA-Z0-9_]*)[${WS}]*=[${WS}]*{[${WS}]*" GROUPSTART_MATCH "${DEFINITION_CONTENTS}")
+        if (NOT GROUPSTART_MATCH)
+            break()
+        endif()
+        set(GROUPNAME "${CMAKE_MATCH_1}")
+        cutoff_first_occurrence("${DEFINITION_CONTENTS}" "${GROUPSTART_MATCH}" DEFINITION_CONTENTS)
+        if (DEBUG)
+            message("found: GROUPNAME=${GROUPNAME}")
+        endif()
+        set(NBKEYS 0)
+        set(GROUP_KEY_VALUES "")
+        while (1)
+            string(REGEX MATCH "^([a-zA-Z_][a-zA-Z0-9_]*)[${WS}]*=[${WS}]*(([\"']([${WS}a-zA-Z0-9_%\\\"<>\(\)\\.*+/?:,\\-]+)[\"'])|([a-zA-Z0-9_%\\]+))[${WS}]*;[${WS}]*" KEY_VALUE_MATCH "${DEFINITION_CONTENTS}")
+            if (NOT KEY_VALUE_MATCH)
+                break()
+            endif()
+            set(KEY "${CMAKE_MATCH_1}")
+            if ("${CMAKE_MATCH_4}" STREQUAL "")
+                set(VALUE "${CMAKE_MATCH_5}")
+            else()
+                string(REPLACE "\\\"" "\"" VALUE "${CMAKE_MATCH_4}")
+                #set(VALUE "${CMAKE_MATCH_4}")
+            endif()
+
+            if (DEBUG)
+                message("found: KEY=${KEY}, VALUE=${VALUE}")
+            endif()
+            math(EXPR NBKEYS "${NBKEYS}+1")
+            list(APPEND GROUP_KEY_VALUES "${KEY}" "${VALUE}")
+            cutoff_first_occurrence("${DEFINITION_CONTENTS}" "${KEY_VALUE_MATCH}" DEFINITION_CONTENTS)
+        endwhile()
+        string(REGEX MATCH "^[${WS}]*}[${WS}]*;[${WS}]*" GROUPEND_MATCH "${DEFINITION_CONTENTS}")
+        if (NOT GROUPEND_MATCH)
+            message(FATAL_ERROR "Group ${GROUPNAME} did not finish.")
+        endif()
+        cutoff_first_occurrence("${DEFINITION_CONTENTS}" "${GROUPEND_MATCH}" DEFINITION_CONTENTS)
+        list(APPEND DEFINITION "${GROUPNAME}" ${NBKEYS} ${GROUP_KEY_VALUES})
+    endwhile()
+    set(${DATA} "${DEFINITION}" PARENT_SCOPE)
+endfunction()
+
+function(match_autogen_group TEXT START POS0 POS1 MATCH FOUND)
+    string(SUBSTRING "${TEXT}" "${START}" -1 TEXT)
+    string(REGEX MATCH "\\[\\+[${WS}]*([ a-zA-Z0-9=_$%\\(\\)\"\\+\\-]+)[${WS}]*\\+\\]" MATCH_GROUP "${TEXT}")
+    if ("${MATCH_GROUP}" STREQUAL "")
+        set(${FOUND} 0 PARENT_SCOPE)
+        return()
+    endif()
+    string(FIND "${TEXT}" "${MATCH_GROUP}" START_TEXT)
+    math(EXPR POS0_var "${START}+${START_TEXT}")
+    string(LENGTH "${MATCH_GROUP}" MATCH_LENGTH)
+    math(EXPR POS1_var "${POS0_var}+${MATCH_LENGTH}")
+    set(${POS0} "${POS0_var}" PARENT_SCOPE)
+    set(${POS1} "${POS1_var}" PARENT_SCOPE)
+    set(${FOUND} 1 PARENT_SCOPE)
+    string(STRIP "${CMAKE_MATCH_1}" CONTENT)
+    set("${MATCH}" "${CONTENT}" PARENT_SCOPE)
+endfunction()
+
+function(append_output SUFFICES_FILENAMES TEXT POS0 POS1 FILTER)
+    math(EXPR POS_LENGTH "${POS1}-${POS0}")
+    string(LENGTH "${TEXT}" TEXT_LENGTH)
+    string(SUBSTRING "${TEXT}" "${POS0}" "${POS_LENGTH}" TEXT_APPEND)
+    if (DEBUG)
+        message("appending ${POS0}:${POS1}, length=${POS_LENGTH}")
+    endif()
+    append_output_text("${SUFFICES_FILENAMES}" "${TEXT_APPEND}" "${FILTER}")
+endfunction()
+
+function(append_output_text SUFFICES_FILENAMES TEXT_APPEND FILTER)
+    string(LENGTH "${TEXT_APPEND}" TEXT_LENGTH)
+    list(LENGTH SUFFICES_FILENAMES NB)
+    math(EXPR NB_END "${NB}-1")
+    foreach(INDEX RANGE 0 ${NB_END} 3)
+        math(EXPR INDEX_1 "${INDEX}+1")
+        math(EXPR INDEX_2 "${INDEX}+2")
+        list(GET SUFFICES_FILENAMES ${INDEX} SUFFIX)
+        list(GET SUFFICES_FILENAMES ${INDEX_1} FILENAME)
+        list(GET SUFFICES_FILENAMES ${INDEX_2} TEMPFILENAME)
+        set(WRITE_OK 1)
+        if (FILTER)
+            if (NOT "${SUFFIX}" STREQUAL "${FILTER}")
+                set(WRITE_OK 0)
+            endif()
+        endif()
+        if (WRITE_OK)
+            if (DEBUG)
+                message("Write: ${TEXT_LENGTH} characters to ${FILENAME}")
+            endif()
+            file(APPEND "${TEMPFILENAME}" "${TEXT_APPEND}")
+        endif()
+    endforeach()
+endfunction()
+
+function(output_finish SUFFICES_FILENAMES)
+    list(LENGTH SUFFICES_FILENAMES NB)
+    math(EXPR NB_END "${NB}-1")
+    foreach(INDEX RANGE 0 ${NB_END} 3)
+        math(EXPR INDEX_1 "${INDEX}+1")
+        math(EXPR INDEX_2 "${INDEX}+2")
+        list(GET SUFFICES_FILENAMES ${INDEX_1} FILENAME)
+        list(GET SUFFICES_FILENAMES ${INDEX_2} TEMPFILENAME)
+        file(RENAME "${TEMPFILENAME}" "${FILENAME}")
+    endforeach()
+endfunction()
+
+function(stack_push STACK_ARG)
+    set(STACK_LIST "${${STACK_ARG}}")
+    string(REPLACE ";" " " NEWITEM "${ARGN}")
+    if (DEBUG)
+        list(LENGTH STACK_LIST STACK_LENGTH)
+        message("Pushing \"${NEWITEM}\" onto stack (length=${STACK_LENGTH})")
+    endif()
+    list(APPEND STACK_LIST "${NEWITEM}")
+    set(${STACK_ARG} "${STACK_LIST}" PARENT_SCOPE)
+endfunction()
+
+function(stack_pop STACK_ARG ITEM)
+    set(STACK_LIST "${${STACK_ARG}}")
+    list(LENGTH STACK_LIST STACK_LENGTH)
+    if (STACK_LENGTH EQUAL 0)
+        message(FATAL_ERROR "ENDFOR: stack is empty")
+    endif()
+    math(EXPR LAST_ITEM_INDEX "${STACK_LENGTH}-1")
+    list(GET STACK_LIST "${LAST_ITEM_INDEX}" LAST_ITEM)
+    list(REMOVE_AT STACK_LIST "${LAST_ITEM_INDEX}")
+    string(REPLACE " " ";" LAST_ITEM_LIST "${LAST_ITEM}")
+    if (DEBUG)
+        message("Popping \"${LAST_ITEM}\" from stack (length=${STACK_LENGTH})")
+    endif()
+    set(${ITEM} "${LAST_ITEM_LIST}" PARENT_SCOPE)
+    set(${STACK_ARG} "${STACK_LIST}" PARENT_SCOPE)
+endfunction()
+
+function(stack_top STACK_ARG ITEM)
+    set(STACK_LIST "${${STACK_ARG}}")
+    list(LENGTH STACK_LIST STACK_LENGTH)
+    if (STACK_LENGTH EQUAL 0)
+        message(FATAL_ERROR "ENDFOR: stack is empty")
+    endif()
+    math(EXPR LAST_ITEM_INDEX "${STACK_LENGTH}-1")
+    list(GET STACK_LIST "${LAST_ITEM_INDEX}" LAST_ITEM)
+    string(REPLACE " " ";" LAST_ITEM_LIST "${LAST_ITEM}")
+    if (DEBUG)
+        message("Top of stack: \"${LAST_ITEM}\" from stack (length=${STACK_LENGTH})")
+    endif()
+    set(${ITEM} "${LAST_ITEM_LIST}" PARENT_SCOPE)
+endfunction()
+
+function(stack_find_key STACK_LIST TEMPLATE_PARAMETERS KEY VALUE)
+    list(REVERSE STACK_LIST)
+    foreach(STACK_ITEM ${STACK_LIST})
+        string(REPLACE " " ";" STACK_ITEM_LIST "${STACK_ITEM}")
+        list(GET STACK_ITEM_LIST 3 TP_INDEX)
+        math(EXPR TP_SIZE_INDEX "${TP_INDEX}+1")
+        list(GET TEMPLATE_PARAMETERS ${TP_SIZE_INDEX} TP_SIZE)
+        math(EXPR TP_KV_INDEX_START "${TP_INDEX}+2")
+        math(EXPR TP_KV_INDEX_END "${TP_KV_INDEX_START}+2*${TP_SIZE}-1")
+        foreach(TP_KV_INDEX RANGE ${TP_KV_INDEX_START} ${TP_KV_INDEX_END} 2)
+            list(GET TEMPLATE_PARAMETERS ${TP_KV_INDEX} TP_KEY)
+            if("${TP_KEY}" STREQUAL "${KEY}")
+                math(EXPR TP_VALUE_INDEX "${TP_KV_INDEX}+1")
+                list(GET TEMPLATE_PARAMETERS ${TP_VALUE_INDEX} TP_VALUE)
+                set(${VALUE} "${TP_VALUE}" PARENT_SCOPE)
+                return()
+            endif()
+        endforeach()
+    endforeach()
+    message(FATAL_ERROR "Unknown KEY=${KEY}")
+endfunction()
+
+function(template_parameters_find_next_groupname_index TEMPLATE_PARAMETERS GROUPNAME INDEX_LAST INDEX_NEXT)
+    if (${INDEX_LAST} LESS 0)
+        set(INDEX 0)
+    else ()
+        math(EXPR INDEX_1 "1+(${INDEX_LAST})")
+        list(GET TEMPLATE_PARAMETERS ${INDEX_1} GROUPNAME_INDEX_SIZE)
+        math(EXPR INDEX "${INDEX_LAST}+1+2*${GROUPNAME_INDEX_SIZE}+1")
+    endif()
+    list(LENGTH TEMPLATE_PARAMETERS PARAMETERS_LENGTH)
+    while (${INDEX} LESS ${PARAMETERS_LENGTH})
+        list(GET TEMPLATE_PARAMETERS ${INDEX} GROUPNAME_AT_INDEX)
+        if ("${GROUPNAME}" STREQUAL "${GROUPNAME_AT_INDEX}")
+            set("${INDEX_NEXT}" ${INDEX} PARENT_SCOPE)
+            return()
+        endif()
+        math(EXPR INDEX_1 "${INDEX}+1")
+        list(GET TEMPLATE_PARAMETERS ${INDEX_1} GROUPNAME_INDEX_SIZE)
+        math(EXPR INDEX "${INDEX}+1+2*${GROUPNAME_INDEX_SIZE}+1")
+    endwhile()
+    set("${INDEX_NEXT}" -1 PARENT_SCOPE)
+endfunction()
+
+function(calculate_line_number TEXT POSITION LINENUMBER_ARG)
+    #math(EXPR INDEX_MAX "${POSITION}-1")
+    string(SUBSTRING "${TEXT}" 0 ${POSITION} SUBTEXT)
+    string(REGEX MATCHALL "\n" MATCH_NEWLINES "${SUBTEXT}")
+    list(LENGTH MATCH_NEWLINES NBLINES)
+    math(EXPR NBLINES "${NBLINES}+1")
+    set(${LINENUMBER_ARG} ${NBLINES} PARENT_SCOPE)
+endfunction()
+
+function(parse_template TEMPLATE_FILENAME OUTPUT_DIR TEMPLATE_PARAMETERS)
+    file(READ ${TEMPLATE_FILENAME} TEMPLATE_CONTENTS)
+    set(POSITION 0)
+    match_autogen_group("${TEMPLATE_CONTENTS}" "${POSITION}" POS0 POS1 AUTOGEN FOUND)
+    if (NOT FOUND)
+        message(FATAL_ERROR "Header of template not found")
+    endif()
+    string(REGEX MATCH "AutoGen5 template ([ a-zA-Z0-9]*)" SUFFICES_MATCH "${AUTOGEN}")
+    if (NOT SUFFICES_MATCH)
+        message(FATAL_ERROR "No output suffices found")
+    endif()
+    string(STRIP "${CMAKE_MATCH_1}" SUFFICES)
+    string(REPLACE " " ";" SUFFICES "${SUFFICES}")
+    set(SUFFICES_FILENAMES "")
+    get_filename_component(TEMPLATE_NAME_WE "${TEMPLATE_FILENAME}" NAME_WE)
+    foreach(SUFFIX ${SUFFICES})
+        if ("${OUTPUT_DIR}" STREQUAL "")
+            set(DIR_PREFIX "")
+        else()
+            set(DIR_PREFIX "${OUTPUT_DIR}/")
+        endif()
+        string(RANDOM LENGTH 64 RANDOMSTRING)
+        set(FILENAME "${DIR_PREFIX}${TEMPLATE_NAME_WE}.${SUFFIX}")
+        set(TEMPFILENAME "${DIR_PREFIX}${TEMPLATE_NAME_WE}${RANDOMSTRING}.${SUFFIX}")
+        list(APPEND SUFFICES_FILENAMES "${SUFFIX}" "${FILENAME}" "${TEMPFILENAME}")
+        file(WRITE "${FILENAME}" "")
+    endforeach()
+    if (DEBUG)
+        message("Output files: ${SUFFICES_FILENAMES}")
+    endif()
+    set(WRITE_FILTER "")
+    append_output("${SUFFICES_FILENAMES}" "${TEMPLATE_CONTENTS}" 0 "${POS0}" "${WRITE_FILTER}")
+    math(EXPR POS1 "${POS1}+1")
+    set(POSITION "${POS1}")
+    if (DEBUG)
+        message("Output: ${SUFFICES_FILENAMES}")
+    endif()
+
+    set(STACK "")
+    while (1)
+        match_autogen_group("${TEMPLATE_CONTENTS}" "${POSITION}" POS0 POS1 GROUP_MATCH FOUND)
+        if (NOT FOUND)
+            if (DEBUG)
+                message("No group found. Dumping rest of file.")
+            endif()
+            if (NOT "${STACK}" STREQUAL "")
+                message(FATAL_ERROR "Stack not empty at end of file")
+            endif()
+            string(LENGTH "${TEMPLATE_CONTENTS}" TEXT_LENGTH)
+            append_output("${SUFFICES_FILENAMES}" "${TEMPLATE_CONTENTS}" ${POSITION} ${TEXT_LENGTH} "${WRITE_FILTER}")
+            break()
+        endif()
+        append_output("${SUFFICES_FILENAMES}" "${TEMPLATE_CONTENTS}" ${POSITION} ${POS0} "${WRITE_FILTER}")
+        set(POSITION "${POS1}")
+
+        if (GROUP_MATCH MATCHES "^FOR")
+            string(REPLACE " " ";" GROUP_MATCH_LIST "${GROUP_MATCH}")
+            list(GET GROUP_MATCH_LIST 1 FOR_KEY)
+            template_parameters_find_next_groupname_index("${TEMPLATE_PARAMETERS}" "${FOR_KEY}" -1 FOR_INDEX)
+            if (DEBUG)
+                message("FOR_KEY: ${FOR_KEY}")
+                message("FOR_INDEX: ${FOR_INDEX}")
+            endif()
+            if (${FOR_KEY} LESS 0)
+                message(FATAL_ERROR "FOR has key with empty list. Not implemented yet..")
+            endif()
+            stack_push(STACK FOR ${POSITION} ${FOR_KEY} ${FOR_INDEX})
+        elseif (GROUP_MATCH MATCHES "^ENDFOR")
+            string(REPLACE " " ";" GROUP_MATCH_LIST "${GROUP_MATCH}")
+            list(GET GROUP_MATCH_LIST 1 ENDFOR_KEY)
+            stack_pop(STACK FOR_ITEM)
+            list(GET FOR_ITEM 0 FOR_FOR)
+            if (NOT "${FOR_FOR}" STREQUAL "FOR")
+                message(FATAL_ERROR "ENDFOR does not match last item: ${FOR_FOR}")
+            endif()
+            list(GET FOR_ITEM 1 FOR_POSITION)
+            list(GET FOR_ITEM 2 FOR_KEY)
+            if (NOT "${FOR_KEY}" STREQUAL "${ENDFOR_KEY}")
+                calculate_line_number("${TEMPLATE_CONTENTS}" "${POSITION}" LINENUMBER)
+                message("FOR and ENDFOR do not match. (line number ${LINENUMBER}) (FOR:${FOR_KEY}, ENDFOR:${ENDFOR_KEY})")
+            endif()
+            list(GET FOR_ITEM 3 FOR_INDEX_PREV)
+            template_parameters_find_next_groupname_index("${TEMPLATE_PARAMETERS}" "${FOR_KEY}" ${FOR_INDEX_PREV} FOR_INDEX)
+            if (DEBUG)
+                message("FOR_INDEX was ${FOR_INDEX_PREV}, is now ${FOR_INDEX}")
+            endif()
+            if (${FOR_INDEX} LESS 0)
+                if (DEBUG)
+                    message("ENDFOR: FOR_INDEX < 0 (no more key) ==> Continue")
+                endif()
+            else()
+                set(POSITION ${FOR_POSITION})
+                stack_push(STACK FOR ${FOR_POSITION} ${FOR_KEY} ${FOR_INDEX})
+                if (DEBUG)
+                    message("ENDFOR: FOR_INDEX >= 0 (more keys available) ==> Back to position=${FOR_POSITION}")
+                endif()
+            endif()
+        elseif (GROUP_MATCH MATCHES "^CASE")
+            string(REGEX MATCH "^CASE[${WS}]+\\(([a-zA-Z]+)\\)" CASE_MATCH "${GROUP_MATCH}")
+            if ("${CASE_MATCH}" STREQUAL "")
+                message(FATAL_ERROR "Wrong CASE syntax")
+            endif()
+            set(CASE_KEY "${CMAKE_MATCH_1}")
+            if (DEBUG)
+                message("CASE: KEY=${CASE_KEY}")
+            endif()
+            stack_push(STACK CASE "${CASE_KEY}" ${POSITION})
+        elseif (GROUP_MATCH MATCHES "^==")
+            math(EXPR POSITION "${POSITION}+1")
+            string(REGEX MATCH "^==[${WS}]+([a-zA-Z_][a-zA-Z0-9_]*)" CASE_MATCH "${GROUP_MATCH}")
+            if ("${CASE_MATCH}" STREQUAL "")
+                message(FATAL_ERROR "Wrong == syntax")
+            endif()
+            stack_top(STACK CASE_ITEM)
+            list(GET CASE_ITEM 0 CASE_CASE)
+            if(NOT "${CASE_CASE}" STREQUAL "CASE")
+                message(FATAL_ERROR "== block must be in CASE. Top of stack=${CASE_CASE}")
+            endif()
+            set(CASE_VALUE "${CMAKE_MATCH_1}")
+            if (DEBUG)
+                message("case: == VALUE=${CASE_VALUE}")
+            endif()
+            list(GET CASE_ITEM 1 CASE_KEY)
+            if ("${CASE_KEY}" STREQUAL "suffix")
+                if (DEBUG)
+                    message("Setting write filter to ${CASE_VALUE}")
+                endif()
+                set(WRITE_FILTER "${CASE_VALUE}")
+            else()
+                message(FATAL_ERROR "CASE: unsupported argument ${CASE_KEY}")
+            endif()
+        elseif (GROUP_MATCH MATCHES "^ESAC")
+            stack_pop(STACK CASE_ITEM)
+            if (DEBUG)
+                message("ESAC")
+            endif()
+            list(GET CASE_ITEM 0 CASE_CASE)
+            if (NOT "${CASE_CASE}" STREQUAL "CASE")
+                message(FATAL_ERROR "ESAC does not match last item: ${CASE_CASE}")
+            endif()
+            if ("${CASE_KEY}" STREQUAL "suffix")
+                if (DEBUG)
+                    message("Removing write filter")
+                endif()
+                set(WRITE_FILTER "")
+            else()
+                message(FATAL_ERROR "CASE: unsupported argument ${CASE_KEY}")
+            endif()
+        else()
+            string(REGEX MATCH "\\(([a-zA-Z0-9_$%\"${WS}\\+\\-]+)\\)" PARENTHESE_MATCH "${GROUP_MATCH}")
+            if (NOT "${PARENTHESE_MATCH}" STREQUAL "")
+                set(PARENTHESE_CONTENT "${CMAKE_MATCH_1}")
+                string(REPLACE " " ";" PARENTHESE_LIST "${PARENTHESE_CONTENT}")
+                list(GET PARENTHESE_LIST 0 PARENTHESE_COMMAND)
+                if ("${PARENTHESE_COMMAND}" STREQUAL "get")
+                    list(GET PARENTHESE_LIST 1 KEY_QUOTED)
+                    string(REGEX MATCH "\\\"([a-zA-Z_${WS}]+)\\\"" KEY_MATCH "${KEY_QUOTED}")
+                    if ("${KEY_MATCH}" STREQUAL "")
+                        message(FATAL_ERROR "get: empty key")
+                    endif()
+                    set(KEY "${CMAKE_MATCH_1}")
+                    if (DEBUG)
+                        message("Get: key=${KEY}")
+                    endif()
+                    stack_find_key("${STACK}" "${TEMPLATE_PARAMETERS}" "${KEY}" VALUE)
+                    if (DEBUG)
+                        message("Get key=${KEY} ==> value=${VALUE}")
+                    endif()
+                    append_output_text("${SUFFICES_FILENAMES}" "${VALUE}" "${WRITE_FILTER}")
+                elseif("${PARENTHESE_COMMAND}" STREQUAL "tpl-file-line")
+                    list(GET PARENTHESE_LIST 1 FORMAT_LINE)
+                    calculate_line_number("${TEMPLATE_CONTENTS}" "${POSITION}" LINENUMBER)
+                    append_output_text("${SUFFICES_FILENAMES}" "${LINENUMBER}" "${WRITE_FILTER}")
+                else()
+                    message(FATAL_ERROR "Unknown parenthese command: ${PARENTHESE_COMMAND}")
+                endif()
+            else()
+                message(FATAL_ERROR "Unknown command: ${GROUP_MATCH}")
+            endif()
+        endif()
+
+    endwhile()
+    if (NOT "${STACK}" STREQUAL "")
+        message(FATAL_ERROR "STACK was not empty at EOF")
+    endif()
+    output_finish("${SUFFICES_FILENAMES}")
+endfunction()
+
+if ("${DEFINITION}" STREQUAL "")
+    message(FATAL_ERROR "Need definition file")
+endif()
+if (NOT EXISTS "${DEFINITION}")
+    message(FATAL_ERROR "Definition file does not exist (${DEFINITION})")
+endif()
+
+read_definition("${DEFINITION}" TEMPLATE_FILENAME DATA)
+if (DEBUG)
+    message("${TEMPLATE_FILENAME}")
+    message("${DATA}")
+endif()
+
+parse_template("${TEMPLATE_FILENAME}" "${OUTPUTDIR}" "${DATA}")

extern/libsndfile-modified/cmake/CheckCPUArch.c.in

@@ -0,0 +1,7 @@
+int main(void) {
+#if @CHECK_CPU_ARCH_DEFINES@
+    return 0;
+#else
+    fail
+#endif
+}

extern/libsndfile-modified/cmake/CheckCPUArch.cmake

@@ -0,0 +1,23 @@
+macro (_CHECK_CPU_ARCH ARCH ARCH_DEFINES VARIABLE)
+	if (NOT DEFINED HAVE_${VARIABLE})
+		message (STATUS "Check CPU architecture is ${ARCH}")
+		set (CHECK_CPU_ARCH_DEFINES ${ARCH_DEFINES})
+		configure_file (${PROJECT_SOURCE_DIR}/cmake/CheckCPUArch.c.in ${PROJECT_BINARY_DIR}/CMakeFiles/CMakeTmp/CheckCPUArch.c @ONLY)
+		try_compile (HAVE_${VARIABLE} "${PROJECT_BINARY_DIR}"
+			"${PROJECT_BINARY_DIR}/CMakeFiles/CMakeTmp/CheckCPUArch.c")
+		if(HAVE_${VARIABLE})
+			message (STATUS "Check CPU architecture is ${ARCH} - yes")
+			set (${VARIABLE} 1 CACHE INTERNAL "Result of CHECK_CPU_ARCH_X64" FORCE)
+		else ()
+			message (STATUS "Check CPU architecture is ${ARCH} - no")
+        endif ()
+    endif ()
+endmacro (_CHECK_CPU_ARCH)
+
+macro (CHECK_CPU_ARCH_X64 VARIABLE)
+    _CHECK_CPU_ARCH (x64 "defined(__amd64__) || defined(__amd64) || defined(__x86_64__) || defined(__x86_64) || defined(_M_X64) || defined(_M_AMD64)" ${VARIABLE})
+endmacro (CHECK_CPU_ARCH_X64)
+
+macro (CHECK_CPU_ARCH_X86 VARIABLE)
+    _CHECK_CPU_ARCH (x86 "defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) ||defined( __i386) || defined(_M_IX86)" ${VARIABLE})
+endmacro (CHECK_CPU_ARCH_X86)

extern/libsndfile-modified/cmake/ClipMode.cmake

@@ -0,0 +1,92 @@
+include (CheckCSourceRuns)
+include (CMakePushCheckState)
+
+macro (CLIP_MODE)
+	if ((NOT DEFINED CPU_CLIPS_NEGATIVE) AND (NOT DEFINED CPU_CLIPS_POSITIVE))
+		set (CLIP_MODE_POSITIVE_MESSAGE "Target processor clips on positive float to int conversion")
+		set (CLIP_MODE_NEGATIVE_MESSAGE "Target processor clips on negative float to int conversion")
+
+		message (STATUS "Checking processor clipping capabilities...")
+
+		if (CMAKE_CROSSCOMPILING)
+
+			set (CLIP_MSG "disabled")
+			set (CPU_CLIPS_POSITIVE FALSE CACHE BOOL ${CLIP_MODE_POSITIVE_MESSAGE})
+			set (CPU_CLIPS_NEGATIVE FALSE CACHE BOOL ${CLIP_MODE_NEGATIVE_MESSAGE})
+
+		else (NOT CMAKE_CROSSCOMPILING)
+
+			cmake_push_check_state ()
+			
+			set (CMAKE_REQUIRED_QUIET TRUE)
+			if (LIBM_REQUIRED)
+				set (CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${M_LIBRARY})
+			endif ()
+			
+			check_c_source_runs (
+			"
+			#define	_ISOC9X_SOURCE	1
+			#define _ISOC99_SOURCE	1
+			#define	__USE_ISOC99	1
+			#define __USE_ISOC9X	1
+			#include <math.h>
+			int main (void)
+			{	double	fval ;
+				int k, ival ;
+
+				fval = 1.0 * 0x7FFFFFFF ;
+				for (k = 0 ; k < 100 ; k++)
+				{	ival = (lrint (fval)) >> 24 ;
+					if (ival != 127)
+						return 1 ;
+				
+					fval *= 1.2499999 ;
+					} ;
+				
+					return 0 ;
+				}
+			"
+			CPU_CLIPS_POSITIVE)
+			
+			check_c_source_runs (
+			"
+			#define	_ISOC9X_SOURCE	1
+			#define _ISOC99_SOURCE	1
+			#define	__USE_ISOC99	1
+			#define __USE_ISOC9X	1
+			#include <math.h>
+			int main (void)
+			{	double	fval ;
+				int k, ival ;
+
+				fval = -8.0 * 0x10000000 ;
+				for (k = 0 ; k < 100 ; k++)
+				{	ival = (lrint (fval)) >> 24 ;
+					if (ival != -128)
+						return 1 ;
+				
+					fval *= 1.2499999 ;
+					} ;
+				
+					return 0 ;
+				}
+			"
+			CPU_CLIPS_NEGATIVE)
+
+			cmake_pop_check_state ()
+
+			if (CPU_CLIPS_POSITIVE AND (NOT CPU_CLIPS_NEGATIVE))
+				set (CLIP_MSG "positive")
+			elseif (CPU_CLIPS_NEGATIVE AND (NOT CPU_CLIPS_POSITIVE))
+				set (CLIP_MSG "negative")
+			elseif (CPU_CLIPS_POSITIVE AND CPU_CLIPS_NEGATIVE)
+				set (CLIP_MSG "both")
+			else ()
+				set (CLIP_MSG "none")
+			endif ()
+
+		endif (CMAKE_CROSSCOMPILING)
+
+		message (STATUS "Checking processor clipping capabilities... ${CLIP_MSG}")
+	endif ()
+endmacro (CLIP_MODE)

extern/libsndfile-modified/cmake/FindFLAC.cmake

@@ -0,0 +1,67 @@
+# - Find FLAC
+# Find the native FLAC includes and libraries
+#
+#  FLAC_INCLUDE_DIRS - where to find FLAC headers.
+#  FLAC_LIBRARIES    - List of libraries when using libFLAC.
+#  FLAC_FOUND        - True if libFLAC found.
+#  FLAC_DEFINITIONS  - FLAC compile definitons 
+
+if (FLAC_INCLUDE_DIR)
+    # Already in cache, be silent
+    set (FLAC_FIND_QUIETLY TRUE)
+endif ()
+
+find_package (Ogg QUIET)
+
+find_package (PkgConfig QUIET)
+pkg_check_modules(PC_FLAC QUIET flac)
+
+set(FLAC_VERSION ${PC_FLAC_VERSION})
+
+find_path (FLAC_INCLUDE_DIR FLAC/stream_decoder.h
+	HINTS
+		${PC_FLAC_INCLUDEDIR}
+		${PC_FLAC_INCLUDE_DIRS}
+		${FLAC_ROOT}
+	)
+
+# MSVC built libraries can name them *_static, which is good as it
+# distinguishes import libraries from static libraries with the same extension.
+find_library (FLAC_LIBRARY
+	NAMES
+		FLAC
+		libFLAC
+		libFLAC_dynamic
+		libFLAC_static
+	HINTS
+		${PC_FLAC_LIBDIR}
+		${PC_FLAC_LIBRARY_DIRS}
+		${FLAC_ROOT}
+	)
+
+# Handle the QUIETLY and REQUIRED arguments and set FLAC_FOUND to TRUE if
+# all listed variables are TRUE.
+include (FindPackageHandleStandardArgs)
+find_package_handle_standard_args (FLAC
+	REQUIRED_VARS
+		FLAC_LIBRARY
+		FLAC_INCLUDE_DIR
+		Ogg_FOUND
+	VERSION_VAR
+        FLAC_VERSION
+	)
+
+if (FLAC_FOUND)
+	set (FLAC_INCLUDE_DIRS ${FLAC_INCLUDE_DIR})
+	set (FLAC_LIBRARIES ${FLAC_LIBRARY} ${OGG_LIBRARIES})
+    if (NOT TARGET FLAC::FLAC)
+		add_library(FLAC::FLAC UNKNOWN IMPORTED)
+		set_target_properties(FLAC::FLAC PROPERTIES
+			INTERFACE_INCLUDE_DIRECTORIES "${FLAC_INCLUDE_DIR}"
+			IMPORTED_LOCATION "${FLAC_LIBRARY}"
+			INTERFACE_LINK_LIBRARIES Ogg::ogg
+			)
+	endif ()
+endif ()
+
+mark_as_advanced(FLAC_INCLUDE_DIR FLAC_LIBRARY)

extern/libsndfile-modified/cmake/FindOgg.cmake

@@ -0,0 +1,61 @@
+# - Find ogg
+# Find the native ogg includes and libraries
+#
+#  OGG_INCLUDE_DIRS - where to find ogg.h, etc.
+#  OGG_LIBRARIES    - List of libraries when using ogg.
+#  OGG_FOUND        - True if ogg found.
+
+if (OGG_INCLUDE_DIR)
+	# Already in cache, be silent
+	set(OGG_FIND_QUIETLY TRUE)
+endif ()
+
+find_package (PkgConfig QUIET)
+pkg_check_modules (PC_OGG QUIET ogg>=1.3.0)
+
+set (OGG_VERSION ${PC_OGG_VERSION})
+
+find_path (OGG_INCLUDE_DIR ogg/ogg.h
+	HINTS
+		${PC_OGG_INCLUDEDIR}
+		${PC_OGG_INCLUDE_DIRS}
+		${OGG_ROOT}
+	)
+# MSVC built ogg may be named ogg_static.
+# The provided project files name the library with the lib prefix.
+find_library (OGG_LIBRARY
+	NAMES
+		ogg
+		ogg_static
+		libogg
+		libogg_static
+	HINTS
+		${PC_OGG_LIBDIR}
+		${PC_OGG_LIBRARY_DIRS}
+		${OGG_ROOT}
+	)
+# Handle the QUIETLY and REQUIRED arguments and set OGG_FOUND
+# to TRUE if all listed variables are TRUE.
+include (FindPackageHandleStandardArgs)
+find_package_handle_standard_args (Ogg
+	REQUIRED_VARS
+		OGG_LIBRARY
+		OGG_INCLUDE_DIR
+	VERSION_VAR
+		OGG_VERSION
+	)
+
+if (OGG_FOUND)
+	set (OGG_LIBRARIES ${OGG_LIBRARY})
+	set (OGG_INCLUDE_DIRS ${OGG_INCLUDE_DIR})
+	
+	if(NOT TARGET Ogg::ogg)
+	add_library(Ogg::ogg UNKNOWN IMPORTED)
+		set_target_properties(Ogg::ogg PROPERTIES
+			INTERFACE_INCLUDE_DIRECTORIES "${OGG_INCLUDE_DIRS}"
+			IMPORTED_LOCATION "${OGG_LIBRARIES}"
+		)
+  endif ()
+endif ()
+
+mark_as_advanced (OGG_INCLUDE_DIR OGG_LIBRARY)

extern/libsndfile-modified/cmake/FindOpus.cmake

@@ -0,0 +1,67 @@
+# - Find opus
+# Find the native opus includes and libraries
+#
+#  OPUS_INCLUDE_DIRS - where to find opus.h, etc.
+#  OPUS_LIBRARIES    - List of libraries when using opus.
+#  OPUS_FOUND        - True if Opus found.
+
+if (OPUS_INCLUDE_DIR)
+    # Already in cache, be silent
+    set(OPUS_FIND_QUIETLY TRUE)
+endif ()
+
+find_package (Ogg QUIET)
+
+find_package (PkgConfig QUIET)
+pkg_check_modules(PC_OPUS QUIET opus>=1.1)
+
+set (OPUS_VERSION ${PC_OPUS_VERSION})
+
+find_path (OPUS_INCLUDE_DIR opus/opus.h
+	HINTS
+		${PC_OPUS_INCLUDEDIR}
+		${PC_OPUS_INCLUDE_DIRS}
+		${OPUS_ROOT}
+	)
+
+# MSVC built opus may be named opus_static.
+# The provided project files name the library with the lib prefix.
+
+find_library (OPUS_LIBRARY
+	NAMES
+		opus
+		opus_static
+		libopus
+		libopus_static
+	HINTS
+		${PC_OPUS_LIBDIR}
+		${PC_OPUS_LIBRARY_DIRS}
+		${OPUS_ROOT}
+	)
+
+# Handle the QUIETLY and REQUIRED arguments and set OPUS_FOUND
+# to TRUE if all listed variables are TRUE.
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args (Opus
+	REQUIRED_VARS
+		OPUS_LIBRARY
+		OPUS_INCLUDE_DIR
+		OGG_FOUND
+	VERSION_VAR
+		OPUS_VERSION
+	)
+
+if (OPUS_FOUND)
+	set (OPUS_LIBRARIES ${OPUS_LIBRARY})
+	set (OPUS_INCLUDE_DIRS ${OPUS_INCLUDE_DIR})
+
+	if (NOT TARGET Opus::opus)
+		add_library (Opus::opus UNKNOWN IMPORTED)
+		set_target_properties (Opus::opus PROPERTIES
+			INTERFACE_INCLUDE_DIRECTORIES "${OPUS_INCLUDE_DIRS}"
+			IMPORTED_LOCATION "${OPUS_LIBRARIES}"
+		)
+	endif ()
+endif ()
+
+mark_as_advanced(OPUS_INCLUDE_DIR OPUS_LIBRARY)

extern/libsndfile-modified/cmake/FindSndio.cmake

@@ -0,0 +1,61 @@
+# - Find SoundIO (sndio) includes and libraries
+#
+#   SNDIO_FOUND        - True if SNDIO_INCLUDE_DIR & SNDIO_LIBRARY are
+#                        found
+#   SNDIO_LIBRARIES    - Set when SNDIO_LIBRARY is found
+#   SNDIO_INCLUDE_DIRS - Set when SNDIO_INCLUDE_DIR is found
+#
+#   SNDIO_INCLUDE_DIR - where to find sndio.h, etc.
+#   SNDIO_LIBRARY     - the sndio library
+#
+
+if (SNDIO_INCLUDE_DIR)
+	# Already in cache, be silent
+	set (SNDIO_FIND_QUIETLY TRUE)
+endif ()
+
+find_package (PkgConfig QUIET)
+pkg_check_modules (PC_SNDIO QUIET sndio)
+
+set (SNDIO_VERSION ${PC_SNDIO_VERSION})
+
+find_path (SNDIO_INCLUDE_DIR
+	NAMES
+		sndio.h
+	HINTS
+		${PC_SNDIO_INCLUDEDIR}
+		${PC_SNDIO_INCLUDE_DIRS}
+		${SNDIO_ROOT}
+	)
+
+find_library (SNDIO_LIBRARY
+	NAMES
+		sndio
+	HINTS
+		${PC_SNDIO_LIBDIR}
+		${PC_SNDIO_LIBRARY_DIRS}
+		${SNDIO_ROOT}
+	)
+
+include (FindPackageHandleStandardArgs)
+find_package_handle_standard_args (Sndio
+	REQUIRED_VARS
+		SNDIO_LIBRARY
+		SNDIO_INCLUDE_DIR
+	VERSION_VAR
+		SNDIO_VERSION
+	)
+
+if (SNDIO_FOUND)
+	set (SNDIO_LIBRARIES ${SNDIO_LIBRARY})
+	set (SNDIO_INCLUDE_DIRS ${SNDIO_INCLUDE_DIR})
+	if (NOT TARGET Sndio::Sndio)
+		add_library (Sndio::Sndio UNKNOWN IMPORTED)
+		set_target_properties (Sndio::Sndio PROPERTIES
+			INTERFACE_INCLUDE_DIRECTORIES "${SNDIO_INCLUDE_DIRS}"
+			IMPORTED_LOCATION "${SNDIO_LIBRARIES}"
+		)
+	endif()
+endif()
+
+mark_as_advanced (SNDIO_INCLUDE_DIR SNDIO_LIBRARY)

extern/libsndfile-modified/cmake/FindSpeex.cmake

@@ -0,0 +1,55 @@
+# - Find Speex
+# Find the native Speex includes and libraries
+#
+#	 SPEEX_INCLUDE_DIRS - where to find speex.h, etc.
+#	 SPEEX_LIBRARIES	- List of libraries when using Speex.
+#	 SPEEX_FOUND		- True if Speex found.
+
+if (SPEEX_INCLUDE_DIR)
+	set (SPEEX_FIND_QUIETLY TRUE)
+endif ()
+
+find_package (PkgConfig QUIET)
+pkg_check_modules (PC_SPEEX QUIET speex)
+
+set (SPEEX_VERSION ${PC_SPEEX_VERSION})
+
+find_path (SPEEX_INCLUDE_DIR speex/speex.h
+	HINTS
+		${PC_SPEEX_INCLUDEDIR}
+		${PC_SPEEX_INCLUDE_DIRS}
+		${SPEEX_ROOT}
+	)
+find_library (SPEEX_LIBRARY
+	NAMES
+		speex
+		libspeex
+	HINTS
+		${PC_SPEEX_LIBDIR}
+		${PC_SPEEX_LIBRARY_DIRS}
+		${SPEEX_ROOT}
+	)
+
+include (FindPackageHandleStandardArgs)
+find_package_handle_standard_args (Speex
+	REQUIRED_VARS
+		SPEEX_LIBRARY
+		SPEEX_INCLUDE_DIR
+	VERSION_VAR
+		SPEEX_VERSION
+	)
+
+if (SPEEX_FOUND)
+	set (SPEEX_LIBRARIES ${SPEEX_LIBRARY})
+	set (SPEEX_INCLUDE_DIRS ${SPEEX_INCLUDE_DIR})
+	
+	if (NOT TARGET Speex::Speex)
+		add_library (Speex::Speex UNKNOWN IMPORTED)
+		set_target_properties (Speex::Speex PROPERTIES
+			INTERFACE_INCLUDE_DIRECTORIES "${SPEEX_INCLUDE_DIRS}"
+			IMPORTED_LOCATION "${SPEEX_LIBRARIES}"
+		)
+	endif ()
+endif ()
+
+mark_as_advanced (SPEEX_INCLUDE_DIR SPEEX_LIBRARY)

extern/libsndfile-modified/cmake/FindVorbis.cmake

@@ -0,0 +1,210 @@
+#[=======================================================================[.rst:
+FindVorbis
+----------
+
+Finds the native vorbis, vorbisenc amd vorbisfile includes and libraries.
+
+Imported Targets
+^^^^^^^^^^^^^^^^
+
+This module provides the following imported targets, if found:
+
+``Vorbis::vorbis``
+  The Vorbis library
+``Vorbis::vorbisenc``
+  The VorbisEnc library
+``Vorbis::vorbisfile``
+  The VorbisFile library
+
+Result Variables
+^^^^^^^^^^^^^^^^
+
+This will define the following variables:
+
+``Vorbis_Vorbis_INCLUDE_DIRS``
+  List of include directories when using vorbis.
+``Vorbis_Enc_INCLUDE_DIRS``
+  List of include directories when using vorbisenc.
+``Vorbis_File_INCLUDE_DIRS``
+  List of include directories when using vorbisfile.
+``Vorbis_Vorbis_LIBRARIES``
+  List of libraries when using vorbis.
+``Vorbis_Enc_LIBRARIES``
+  List of libraries when using vorbisenc.
+``Vorbis_File_LIBRARIES``
+  List of libraries when using vorbisfile.
+``Vorbis_FOUND``
+  True if vorbis and requested components found.
+``Vorbis_Vorbis_FOUND``
+  True if vorbis found.
+``Vorbis_Enc_FOUND``
+  True if vorbisenc found.
+``Vorbis_Enc_FOUND``
+  True if vorbisfile found.
+
+Cache variables
+^^^^^^^^^^^^^^^
+
+The following cache variables may also be set:
+
+``Vorbis_Vorbis_INCLUDE_DIR``
+  The directory containing ``vorbis/vorbis.h``.
+``Vorbis_Enc_INCLUDE_DIR``
+  The directory containing ``vorbis/vorbisenc.h``.
+``Vorbis_File_INCLUDE_DIR``
+  The directory containing ``vorbis/vorbisenc.h``.
+``Vorbis_Vorbis_LIBRARY``
+  The path to the vorbis library.
+``Vorbis_Enc_LIBRARY``
+  The path to the vorbisenc library.
+``Vorbis_File_LIBRARY``
+  The path to the vorbisfile library.
+
+Hints
+^^^^^
+
+A user may set ``Vorbis_ROOT`` to a vorbis installation root to tell this module where to look.
+
+#]=======================================================================]
+
+if (Vorbis_Vorbis_INCLUDE_DIR)
+	# Already in cache, be silent
+	set (Vorbis_FIND_QUIETLY TRUE)
+endif ()
+
+set (Vorbis_Vorbis_FIND_QUIETLY TRUE)
+set (Vorbis_Enc_FIND_QUIETLY TRUE)
+set (Vorbis_File_FIND_QUIETLY TRUE)
+
+find_package (Ogg QUIET)
+
+find_package (PkgConfig QUIET)
+pkg_check_modules (PC_Vorbis_Vorbis QUIET vorbis)
+pkg_check_modules (PC_Vorbis_Enc QUIET vorbisenc)
+pkg_check_modules (PC_Vorbis_File QUIET vorbisfile)
+
+set (Vorbis_VERSION ${PC_Vorbis_Vorbis_VERSION})
+
+find_path (Vorbis_Vorbis_INCLUDE_DIR vorbis/codec.h
+	HINTS
+		${PC_Vorbis_Vorbis_INCLUDEDIR}
+		${PC_Vorbis_Vorbis_INCLUDE_DIRS}
+		${Vorbis_ROOT}
+	)
+
+find_path (Vorbis_Enc_INCLUDE_DIR vorbis/vorbisenc.h
+	HINTS
+		${PC_Vorbis_Enc_INCLUDEDIR}
+		${PC_Vorbis_Enc_INCLUDE_DIRS}
+		${Vorbis_ROOT}
+	)
+
+find_path (Vorbis_File_INCLUDE_DIR vorbis/vorbisfile.h
+	HINTS
+		${PC_Vorbis_File_INCLUDEDIR}
+		${PC_Vorbis_File_INCLUDE_DIRS}
+		${Vorbis_ROOT}
+	)
+
+find_library (Vorbis_Vorbis_LIBRARY
+	NAMES
+		vorbis
+		vorbis_static
+		libvorbis
+		libvorbis_static
+	HINTS
+		${PC_Vorbis_Vorbis_LIBDIR}
+		${PC_Vorbis_Vorbis_LIBRARY_DIRS}
+		${Vorbis_ROOT}
+	)
+
+find_library (Vorbis_Enc_LIBRARY
+	NAMES
+		vorbisenc
+		vorbisenc_static
+		libvorbisenc
+		libvorbisenc_static
+	HINTS
+		${PC_Vorbis_Enc_LIBDIR}
+		${PC_Vorbis_Enc_LIBRARY_DIRS}
+		${Vorbis_ROOT}
+	)
+
+find_library (Vorbis_File_LIBRARY
+	NAMES
+		vorbisfile
+		vorbisfile_static
+		libvorbisfile
+		libvorbisfile_static
+	HINTS
+		${PC_Vorbis_File_LIBDIR}
+		${PC_Vorbis_File_LIBRARY_DIRS}
+		${Vorbis_ROOT}
+	)
+
+include (FindPackageHandleStandardArgs)
+
+if (Vorbis_Vorbis_LIBRARY AND Vorbis_Vorbis_INCLUDE_DIR AND Ogg_FOUND)
+    set (Vorbis_Vorbis_FOUND TRUE)
+endif ()
+
+if (Vorbis_Enc_LIBRARY AND Vorbis_Enc_INCLUDE_DIR AND Vorbis_Vorbis_FOUND)
+    set (Vorbis_Enc_FOUND TRUE)
+endif ()
+
+if (Vorbis_Vorbis_FOUND AND Vorbis_File_LIBRARY AND Vorbis_File_INCLUDE_DIR)
+    set (Vorbis_File_FOUND TRUE)
+endif ()
+
+find_package_handle_standard_args (Vorbis
+	REQUIRED_VARS
+		Vorbis_Vorbis_LIBRARY
+		Vorbis_Vorbis_INCLUDE_DIR
+		Ogg_FOUND
+	HANDLE_COMPONENTS
+	VERSION_VAR Vorbis_VERSION)
+
+
+if (Vorbis_Vorbis_FOUND)
+	set (Vorbis_Vorbis_INCLUDE_DIRS ${VORBIS_INCLUDE_DIR})
+	set (Vorbis_Vorbis_LIBRARIES ${VORBIS_LIBRARY} ${OGG_LIBRARIES})
+    if (NOT TARGET Vorbis::vorbis)
+		add_library (Vorbis::vorbis UNKNOWN IMPORTED)
+		set_target_properties (Vorbis::vorbis PROPERTIES
+			INTERFACE_INCLUDE_DIRECTORIES "${Vorbis_Vorbis_INCLUDE_DIR}"
+			IMPORTED_LOCATION "${Vorbis_Vorbis_LIBRARY}"
+			INTERFACE_LINK_LIBRARIES Ogg::ogg
+		)
+	endif ()
+
+	if (Vorbis_Enc_FOUND)
+		set (Vorbis_Enc_INCLUDE_DIRS ${Vorbis_Enc_INCLUDE_DIR})
+		set (Vorbis_Enc_LIBRARIES ${Vorbis_Enc_LIBRARY} ${Vorbis_Enc_LIBRARIES})
+		if (NOT TARGET Vorbis::vorbisenc)
+			add_library (Vorbis::vorbisenc UNKNOWN IMPORTED)
+			set_target_properties (Vorbis::vorbisenc PROPERTIES
+				INTERFACE_INCLUDE_DIRECTORIES "${Vorbis_Enc_INCLUDE_DIR}"
+				IMPORTED_LOCATION "${Vorbis_Enc_LIBRARY}"
+				INTERFACE_LINK_LIBRARIES Vorbis::vorbis
+			)
+		endif ()
+	endif ()
+
+	if (Vorbis_File_FOUND)
+		set (Vorbis_File_INCLUDE_DIRS ${Vorbis_File_INCLUDE_DIR})
+		set (Vorbis_File_LIBRARIES ${Vorbis_File_LIBRARY} ${Vorbis_File_LIBRARIES})
+		if (NOT TARGET Vorbis::vorbisfile)
+			add_library (Vorbis::vorbisfile UNKNOWN IMPORTED)
+			set_target_properties (Vorbis::vorbisfile PROPERTIES
+				INTERFACE_INCLUDE_DIRECTORIES "${Vorbis_File_INCLUDE_DIR}"
+				IMPORTED_LOCATION "${Vorbis_File_LIBRARY}"
+				INTERFACE_LINK_LIBRARIES Vorbis::vorbis
+			)
+		endif ()
+	endif ()
+
+endif ()
+
+mark_as_advanced (Vorbis_Vorbis_INCLUDE_DIR Vorbis_Vorbis_LIBRARY)
+mark_as_advanced (Vorbis_Enc_INCLUDE_DIR Vorbis_Enc_LIBRARY)
+mark_as_advanced (Vorbis_File_INCLUDE_DIR Vorbis_File_LIBRARY)

extern/libsndfile-modified/cmake/Findmp3lame.cmake

@@ -0,0 +1,67 @@
+# - Find lame
+# Find the native lame includes and libraries
+#
+#  MP3LAME_INCLUDE_DIRS - where to find lame.h, etc.
+#  MP3LAME_LIBRARIES    - List of libraries when using lame.
+#  MP3LAME_FOUND        - True if Lame found.
+
+if (MP3LAME_INCLUDE_DIR)
+    # Already in cache, be silent
+    set(MP3LAME_FIND_QUIETLY TRUE)
+endif ()
+
+find_path (MP3LAME_INCLUDE_DIR lame/lame.h
+	HINTS
+		${LAME_ROOT}
+	)
+
+# MSVC built lame may be named mp3lame_static.
+# The provided project files name the library with the lib prefix.
+
+find_library (MP3LAME_LIBRARY
+	NAMES
+		mp3lame
+		mp3lame_static
+		libmp3lame
+		libmp3lame_static
+		libmp3lame-static
+	HINTS
+		${MP3LAME_ROOT}
+	)
+
+find_library (MP3LAME_HIP_LIBRARY
+	NAMES
+		mpghip-static
+		libmpghip-static
+	HINTS
+		${MP3LAME_ROOT}
+	)
+
+# Handle the QUIETLY and REQUIRED arguments and set LAME_FOUND
+# to TRUE if all listed variables are TRUE.
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args (mp3lame
+	REQUIRED_VARS
+		MP3LAME_LIBRARY
+		MP3LAME_INCLUDE_DIR
+	)
+
+if (MP3LAME_FOUND)
+	set (MP3LAME_LIBRARIES ${MP3LAME_LIBRARY} ${MP3LAME_HIP_LIBRARY})
+	set (MP3LAME_INCLUDE_DIRS ${MP3LAME_INCLUDE_DIR})
+
+	if (NOT TARGET mp3lame::mp3lame)
+		add_library (mp3lame::mp3lame UNKNOWN IMPORTED)
+		set_target_properties (mp3lame::mp3lame PROPERTIES
+			INTERFACE_INCLUDE_DIRECTORIES "${MP3LAME_INCLUDE_DIRS}"
+			IMPORTED_LOCATION "${MP3LAME_LIBRARY}"
+		)
+		if (MP3LAME_HIP_LIBRARY AND (NOT TARGET mp3lame::mpghip))
+			add_library (mp3lame::mpghip STATIC IMPORTED)
+			set_property (mp3lame::mpghip PROPERTY IMPORTED_LOCATION "${MP3LAME_HIP_LIBRARY}")
+			set_property (TARGET mp3lame::mp3lame PROPERTY INTERFACE_LINK_LIBRARIES "mp3lame::mpghip")
+		endif ()
+	endif ()
+endif ()
+
+mark_as_advanced(MP3LAME_INCLUDE_DIR MP3LAME_LIBRARY MP3LAME_HIP_LIBRARY)

extern/libsndfile-modified/cmake/Findmpg123.cmake

@@ -0,0 +1,95 @@
+#[=======================================================================[.rst:
+Findmpg123
+-------
+
+Finds the mpg123 library.
+
+Imported Targets
+^^^^^^^^^^^^^^^^
+
+This module provides the following imported targets, if found:
+
+``MPG123::libmpg123``
+  The mpg123 library
+
+Result Variables
+^^^^^^^^^^^^^^^^
+
+This will define the following variables:
+
+``mpg123_FOUND``
+  True if the system has the mpg123 package.
+``mpg123_VERSION``
+	The version of mpg123 that was found on the system.
+
+Cache Variables
+^^^^^^^^^^^^^^^
+
+The following cache variables may also be set:
+
+``mpg123_INCLUDE_DIR``
+  The directory containing ``mpg123.h``.
+``mpg123_LIBRARY``
+  The path to the mpg123 library.
+
+#]=======================================================================]
+
+if (mpg123_INCLUDE_DIR)
+    # Already in cache, be silent
+    set(mpg123_FIND_QUIETLY TRUE)
+endif ()
+
+find_package (PkgConfig QUIET)
+pkg_check_modules(PC_MPG123 QUIET libmpg123>=1.25.10)
+
+find_path (mpg123_INCLUDE_DIR mpg123.h
+	HINTS
+		${PC_MPG123_INCLUDEDIR}
+		${PC_MPG123_INCLUDE_DIRS}
+		${mpg123_ROOT}
+	)
+
+# MSVC built mpg123 may be named mpg123_static.
+# The provided project files name the library with the lib prefix.
+
+find_library (mpg123_LIBRARY
+	NAMES
+		mpg123
+		mpg123_static
+		libmpg123
+		libmpg123_static
+	HINTS
+		${PC_MPG123_LIBDIR}
+		${PC_MPG123_LIBRARY_DIRS}
+		${mpg123_ROOT}
+	)
+
+if (PC_MPG123_FOUND)
+	set (mpg123_VERSION ${PC_MPG123_VERSION})
+elseif (mpg123_INCLUDE_DIR)
+	file (READ "${mpg123_INCLUDE_DIR}/mpg123.h" _mpg123_h)
+	string (REGEX MATCH "[0-9]+.[0-9]+.[0-9]+" _mpg123_version_re "${_mpg123_h}")
+	set (mpg123_VERSION "${_mpg123_version_re}")
+endif ()
+
+# Handle the QUIETLY and REQUIRED arguments and set mpg123_FOUND
+# to TRUE if all listed variables are TRUE.
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args (mpg123
+	REQUIRED_VARS
+		mpg123_LIBRARY
+		mpg123_INCLUDE_DIR
+	VERSION_VAR
+		mpg123_VERSION
+	)
+
+if (mpg123_FOUND AND NOT TARGET MPG123::libmpg123)
+	add_library (MPG123::libmpg123 UNKNOWN IMPORTED)
+	set_target_properties (MPG123::libmpg123
+		PROPERTIES 
+			IMPORTED_LOCATION "${mpg123_LIBRARY}"
+			INTERFACE_INCLUDE_DIRECTORIES "${mpg123_INCLUDE_DIR}"
+		)
+endif ()
+
+mark_as_advanced(mpg123_INCLUDE_DIR mpg123_LIBRARY)

extern/libsndfile-modified/cmake/SetupABIVersions.cmake

@@ -0,0 +1,56 @@
+# Inspiration: https://github.com/ros2-dotnet/Fast-RTPS
+
+macro (SETUP_ABI_VERSIONS)
+
+    file (STRINGS ${PROJECT_SOURCE_DIR}/configure.ac CONFIGURE_AC_CONTENT)
+    file (STRINGS
+        configure.ac
+        SNDFILE_LT_CURRENT_TMP
+        REGEX "^m4_define\\(\\[?lt_current\\]?, *\\[?[0-9]+\\]?\\)"
+        )
+    string (REGEX REPLACE "m4_define\\(\\[?lt_current\\]?, *\\[?([0-9]+)\\]?\\)"
+        "\\1"
+        SNDFILE_LT_CURRENT
+        ${SNDFILE_LT_CURRENT_TMP}
+        )
+
+    file (STRINGS
+        configure.ac
+        SNDFILE_LT_REVISION_TMP
+        REGEX "^m4_define\\(\\[?lt_revision\\]?, *\\[?[0-9]+\\]?\\)"
+        )
+    string (REGEX REPLACE "m4_define\\(\\[?lt_revision\\]?, *\\[?([0-9]+)\\]?\\)"
+        "\\1"
+        SNDFILE_LT_REVISION
+        ${SNDFILE_LT_REVISION_TMP}
+        )
+
+    file (STRINGS
+        configure.ac
+        SNDFILE_LT_AGE_TMP
+        REGEX "^m4_define\\(\\[?lt_age\\]?, *\\[?[0-9]+\\]?\\)"
+        )
+    string (REGEX REPLACE "m4_define\\(\\[?lt_age\\]?, *\\[?([0-9]+)\\]?\\)"
+        "\\1"
+        SNDFILE_LT_AGE
+        ${SNDFILE_LT_AGE_TMP}
+        )
+
+    #
+    # Calculate CMake compatible ABI version from libtool version.
+    #
+
+    math (EXPR SNDFILE_ABI_VERSION_MAJOR "${SNDFILE_LT_CURRENT} - ${SNDFILE_LT_AGE}")
+    set (SNDFILE_ABI_VERSION_MINOR ${SNDFILE_LT_AGE})
+    set (SNDFILE_ABI_VERSION_PATCH ${SNDFILE_LT_REVISION})
+    set (SNDFILE_ABI_VERSION "${SNDFILE_ABI_VERSION_MAJOR}.${SNDFILE_ABI_VERSION_MINOR}.${SNDFILE_ABI_VERSION_PATCH}")
+
+    #
+    # Apple platform current and compatibility versions.
+    #
+
+    math (EXPR SNDFILE_MACHO_CURRENT_VERSION_MAJOR "${SNDFILE_ABI_VERSION_MAJOR} + ${SNDFILE_ABI_VERSION_MINOR} + 1")
+    set (SNDFILE_MACHO_CURRENT_VERSION "${SNDFILE_MACHO_CURRENT_VERSION_MAJOR}.${SNDFILE_ABI_VERSION_PATCH}.0")
+    set (SNDFILE_MACHO_COMPATIBILITY_VERSION "${SNDFILE_MACHO_CURRENT_VERSION_MAJOR}.0.0")
+
+endmacro (SETUP_ABI_VERSIONS)

extern/libsndfile-modified/cmake/SndFileChecks.cmake

@@ -0,0 +1,256 @@
+include (CheckFunctionExists)
+include (CheckIncludeFile)
+include (CheckLibraryExists)
+include (CheckSymbolExists)
+include (CheckTypeSize)
+include (TestBigEndian)
+
+include (TestInline)
+include (ClipMode)
+include (TestLargeFiles)
+include (CheckCPUArch)
+
+test_large_files (_LARGEFILES)
+
+if (LARGE_FILES_DEFINITIONS)
+	add_definitions(${LARGE_FILES_DEFINITIONS})
+endif ()
+
+if (CMAKE_SYSTEM_NAME STREQUAL "OpenBSD")
+	find_package (Sndio)
+elseif (NOT WIN32)
+	find_package (ALSA)
+endif ()
+
+if (VCPKG_TOOLCHAIN AND (NOT CMAKE_VERSION VERSION_LESS 3.15))
+	set (CMAKE_FIND_PACKAGE_PREFER_CONFIG ON)
+endif ()
+
+if (CMAKE_FIND_PACKAGE_PREFER_CONFIG)
+	find_package (Ogg 1.3 CONFIG)
+	find_package (Vorbis CONFIG COMPONENTS Enc)
+	find_package (FLAC CONFIG)
+	find_package (Opus CONFIG)
+
+	include (FindPackageHandleStandardArgs)
+	find_package_handle_standard_args (Ogg CONFIG_MODE)
+	find_package_handle_standard_args (Vorbis CONFIG_MODE)
+	find_package_handle_standard_args (FLAC CONFIG_MODE)
+	find_package_handle_standard_args (Opus CONFIG_MODE)
+else ()
+	find_package (Ogg 1.3)
+	find_package (Vorbis COMPONENTS Enc)
+	find_package (FLAC)
+	find_package (Opus)
+endif ()
+if (Vorbis_FOUND AND FLAC_FOUND AND Opus_FOUND)
+	set (HAVE_EXTERNAL_XIPH_LIBS 1)
+else ()
+	set (HAVE_EXTERNAL_XIPH_LIBS 0)
+endif ()
+
+find_package (mp3lame)
+find_package (mpg123 1.25.10)
+if (TARGET mp3lame::mp3lame AND (TARGET MPG123::libmpg123))
+	set (HAVE_MPEG_LIBS 1)
+else ()
+	set (HAVE_MPEG_LIBS 0)
+endif()
+
+find_package (Speex)
+find_package (SQLite3)
+
+check_include_file (byteswap.h		HAVE_BYTESWAP_H)
+check_include_file (dlfcn.h			HAVE_DLFCN_H)
+check_include_file (direct.h		HAVE_DIRECT_H)
+check_include_file (endian.h		HAVE_ENDIAN_H)
+check_include_file (inttypes.h		HAVE_INTTYPES_H)
+check_include_file (io.h			HAVE_IO_H)
+check_include_file (stdint.h		HAVE_STDINT_H)
+check_include_file (sys/time.h		HAVE_SYS_TIME_H)
+check_include_file (sys/types.h		HAVE_SYS_TYPES_H)
+check_include_file (unistd.h		HAVE_UNISTD_H)
+check_include_file (immintrin.h		HAVE_IMMINTRIN_H)
+check_include_file (stdbool.h		HAVE_STDBOOL_H)
+
+check_cpu_arch_x86 (CPU_IS_X86)
+check_cpu_arch_x64 (CPU_IS_X64)
+if ((CPU_IS_X86 OR CPU_IS_X64) AND HAVE_IMMINTRIN_H)
+	set (HAVE_SSE2 1)
+endif ()
+
+# Never checked
+# check_include_file (stdlib.h		HAVE_STDLIB_H)
+# check_include_file (string.h		HAVE_STRING_H)
+# check_include_file (strings.h		HAVE_STRINGS_H)
+# check_include_file (sys/stat.h	HAVE_SYS_STAT_H)
+# check_include_file (memory.h		HAVE_MEMORY_H)
+
+if (BUILD_TESTING)
+	check_include_file (locale.h	HAVE_LOCALE_H)
+	check_include_file (sys/wait.h	HAVE_SYS_WAIT_H)
+endif ()
+
+check_type_size (int64_t			SIZEOF_INT64_T)
+check_type_size (long				SIZEOF_LONG)
+check_type_size (long\ long			SIZEOF_LONG_LONG)
+check_type_size (ssize_t			SIZEOF_SSIZE_T)
+check_type_size (wchar_t			SIZEOF_WCHAR_T)
+
+# Never used
+# check_type_size (loff_t			SIZEOF_LOFF_T)
+# check_type_size (offt64_t			SIZEOF_OFF64_T)
+
+# Never checked
+# check_type_size (size_t			SIZEOF_SIZE_T)
+
+# Used in configre.ac
+# check_type_size (double			SIZEOF_DOUBLE)
+# check_type_size (float			SIZEOF_FLOAT)
+# check_type_size (int				SIZEOF_INT)
+# check_type_size (short			SIZEOF_SHORT)
+
+if (ENABLE_TESTING)
+	check_type_size (void*			SIZEOF_VOIDP)
+endif()
+
+if (NOT WIN32)
+	check_library_exists (m floor "" LIBM_REQUIRED)
+	if (LIBM_REQUIRED)
+		list (APPEND CMAKE_REQUIRED_LIBRARIES m)
+	endif ()
+endif ()
+
+check_library_exists (sqlite3 sqlite3_close "" HAVE_SQLITE3)
+
+check_function_exists (fstat     		HAVE_FSTAT)
+check_function_exists (fstat64			HAVE_FSTAT64)
+check_function_exists (gettimeofday		HAVE_GETTIMEOFDAY)
+check_function_exists (gmtime			HAVE_GMTIME)
+check_function_exists (gmtime_r			HAVE_GMTIME_R)
+check_function_exists (localtime		HAVE_LOCALTIME)
+check_function_exists (localtime_r		HAVE_LOCALTIME_R)
+check_function_exists (lseek      		HAVE_LSEEK)
+check_function_exists (open				HAVE_OPEN)
+check_function_exists (read				HAVE_READ)
+check_function_exists (write			HAVE_WRITE)
+check_function_exists (lrint			HAVE_LRINT)
+check_function_exists (lrintf			HAVE_LRINTF)
+
+if (NOT WIN32)
+	check_function_exists (ftruncate	HAVE_FTRUNCATE)
+	check_function_exists (fsync    	HAVE_FSYNC)
+endif ()
+
+if (BUILD_TESTING)
+	check_function_exists (pipe			HAVE_PIPE)
+	check_function_exists (setlocale	HAVE_SETLOCALE)
+	check_function_exists (waitpid		HAVE_WAITPID)
+endif ()
+
+# Never checked
+# check_function_exists (calloc			HAVE_CALLOC)
+# check_function_exists (free			HAVE_FREE)
+# check_function_exists (getpagesize	HAVE_GETPAGESIZE)
+# check_function_exists (malloc			HAVE_MALLOC)
+# check_function_exists (realloc		HAVE_REALLOC)
+# check_function_exists (snprintf		HAVE_SNPRINTF)
+# check_function_exists (vsnprintf		HAVE_VSNPRINTF)
+# check_function_exists (floor			HAVE_FLOOR)
+# check_function_exists (fmod			HAVE_FMOD)
+
+# Never used
+# check_function_exists (mmap			HAVE_MMAP)
+# check_function_exists (ceil			HAVE_CEIL)
+# check_function_exists (lround			HAVE_LROUND)
+# check_function_exists (lseek64		HAVE_LSEEK64)
+
+
+check_symbol_exists (S_IRGRP sys/stat.h HAVE_DECL_S_IRGRP)
+
+test_big_endian (WORDS_BIGENDIAN)
+if (WORDS_BIGENDIAN)
+	set (CPU_IS_BIG_ENDIAN 1)
+else ()
+	set (CPU_IS_LITTLE_ENDIAN 1)
+endif ()
+
+if (WIN32)
+	set (OS_IS_WIN32 1)
+	set (USE_WINDOWS_API 1)
+	if (BUILD_SHARED_LIBS)
+		set (WIN32_TARGET_DLL 1)
+	endif ()
+	if (MINGW)
+		add_definitions (-D__USE_MINGW_ANSI_STDIO=1)
+	endif ()
+endif ()
+
+if (CMAKE_SYSTEM_NAME STREQUAL "OpenBSD")
+	set (OS_IS_OPENBSD 1)
+endif ()
+
+
+if (CMAKE_COMPILER_IS_GNUCC OR (CMAKE_C_COMPILER_ID MATCHES "Clang"))
+	set (COMPILER_IS_GCC 1)
+endif ()
+
+test_inline ()
+clip_mode ()
+
+if (MSVC)
+	add_definitions (-D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_DEPRECATE)
+endif (MSVC)
+
+if (DEFINED ENABLE_STATIC_RUNTIME)
+	if (MSVC)
+		if (ENABLE_STATIC_RUNTIME)
+			foreach (flag_var
+				CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
+				CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO
+				CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
+				CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO
+				)
+				if (${flag_var} MATCHES "/MD")
+					string (REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
+				endif ()
+			endforeach (flag_var)
+		else ()
+			foreach (flag_var
+				CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
+				CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO
+				CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
+				CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO
+				)
+				if (${flag_var} MATCHES "/MT")
+					string (REGEX REPLACE "/MT" "/MD" ${flag_var} "${${flag_var}}")
+				endif (${flag_var} MATCHES "/MT")
+			endforeach (flag_var)
+		endif ( )
+	elseif (MINGW)
+		if (ENABLE_STATIC_RUNTIME)
+			if (CMAKE_C_COMPILER_ID STREQUAL GNU)
+				set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -static-libgcc")
+				set (CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "${CMAKE_SHARED_LIBRARY_LINK_C_FLAGS} -static-libgcc -s")
+			endif ()
+			if (CMAKE_CXX_COMPILER_ID STREQUAL GNU)
+				set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -static-libgcc -static-libstdc++")
+				set (CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "${CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS} -static-libgcc -static-libstdc++ -s")
+			endif ()
+			if (CMAKE_C_COMPILER_ID STREQUAL Clang)
+				set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -static")
+				set (CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "${CMAKE_SHARED_LIBRARY_LINK_C_FLAGS} -static")
+			endif ()
+			if (CMAKE_CXX_COMPILER_ID STREQUAL Clang)
+				set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -static")
+				set (CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "${CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS} -static")
+			endif ()
+		endif ()
+	else ()
+		message (AUTHOR_WARNING "ENABLE_STATIC_RUNTIME option is for MSVC or MinGW only.")
+	endif ()
+endif ()
+
+if (BUILD_SHARED_LIBS)
+	find_package (PythonInterp REQUIRED)
+endif()

extern/libsndfile-modified/cmake/SndFileConfig.cmake.in

@@ -0,0 +1,46 @@
+set(SndFile_VERSION @PROJECT_VERSION@)
+set(SndFile_VERSION_MAJOR @PROJECT_VERSION_MAJOR@)
+set(SndFile_VERSION_MINOR @PROJECT_VERSION_MINOR@)
+set(SndFile_VERSION_PATCH @PROJECT_VERSION_PATCH@)
+
+set (SndFile_WITH_EXTERNAL_LIBS @SndFile_WITH_EXTERNAL_LIBS@)
+set (SndFile_WITH_MPEG @SndFile_WITH_MPEG@)
+
+@PACKAGE_INIT@
+
+include (CMakeFindDependencyMacro)
+
+if (NOT @BUILD_SHARED_LIBS@)
+	list (APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR})
+endif ()
+
+if (SndFile_WITH_EXTERNAL_LIBS AND NOT @BUILD_SHARED_LIBS@)
+	find_dependency (Ogg 1.3)
+	find_dependency (Vorbis)
+	find_dependency (FLAC)
+	find_dependency (Opus)
+endif ()
+
+if (SndFile_WITH_MPEG AND NOT @BUILD_SHARED_LIBS@)
+	find_dependency (mp3lame)
+	find_dependency (mpg123)
+endif ()
+
+if (NOT @BUILD_SHARED_LIBS@)
+	list (REMOVE_ITEM CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR})
+endif ()
+
+include (${CMAKE_CURRENT_LIST_DIR}/SndFileTargets.cmake)
+
+set_and_check (SndFile_INCLUDE_DIR "@PACKAGE_INCLUDE_INSTALL_DIR@")
+set (SNDFILE_INCLUDE_DIR ${SndFile_INCLUDE_DIR})
+
+set (SndFile_LIBRARY SndFile::sndfile)
+set (SNDFILE_LIBRARY SndFile::sndfile)
+set (SndFile_LIBRARIES SndFile::sndfile)
+set (SNDFILE_LIBRARIES SndFile::sndfile)
+
+
+check_required_components(SndFile)
+
+set (SNDFILE_FOUND 1)

extern/libsndfile-modified/cmake/TestInline.c.in

@@ -0,0 +1,10 @@
+static @INLINE_KEYWORD@ void test_inline(void)
+{
+	return;
+}
+
+int main (void)
+{
+	test_inline ();
+	return 0;
+}

extern/libsndfile-modified/cmake/TestInline.cmake

@@ -0,0 +1,54 @@
+macro (TEST_INLINE)
+	if (NOT DEFINED INLINE_CODE)
+		message (STATUS "Checking for inline...")
+		set (INLINE_KEYWORD "inline")
+		configure_file (cmake/TestInline.c.in ${PROJECT_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/TestInline.c)
+		try_compile (HAVE_INLINE "${CMAKE_CURRENT_BINARY_DIR}"
+                    "${PROJECT_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/TestInline.c")
+		if (HAVE_INLINE)
+			message (STATUS "Checking for inline... supported")
+		else ()
+			message (STATUS "Checking for inline... not supported")
+			
+			message (STATUS "Checking for __inline...")
+			set (INLINE_KEYWORD "__inline")
+			configure_file (cmake/TestInline.c.in ${PROJECT_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/TestInline.c)
+			try_compile (HAVE___INLINE "${CMAKE_CURRENT_BINARY_DIR}"
+                    "${PROJECT_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/TestInline.c")
+			if (HAVE___INLINE)
+				message (STATUS "Checking for __inline... supported")
+			else ()
+				message (STATUS "Checking for __inline... not supported")
+				
+				message (STATUS "Checking for __inline__...")
+				set (INLINE_KEYWORD "__inline__")
+				configure_file (cmake/TestInline.c.in ${PROJECT_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/TestInline.c)
+				try_compile (HAVE___INLINE "${CMAKE_CURRENT_BINARY_DIR}"
+					"${PROJECT_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/TestInline.c")
+				if (HAVE___INLINE)
+					message (STATUS "Checking for __inline__... supported")
+					
+					message (STATUS "Checking for __inline__...")
+					set (INLINE_KEYWORD "__inline__")
+					configure_file (cmake/TestInline.c.in ${PROJECT_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/cmake/TestInline.c)
+					try_compile (HAVE___INLINE__ "${CMAKE_CURRENT_BINARY_DIR}"
+						"${PROJECT_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/TestInline.c")
+				else ()
+					message (STATUS "Checking for __inline__... not supported")
+					set (INLINE_KEYWORD "")
+				endif ()
+				
+			endif ()			
+		endif ()
+		
+		if (HAVE_INLINE)
+			set (INLINE_CODE "/* #undef inline */" CACHE INTERNAL "")
+		elseif (HAVE___INLINE)
+			set (INLINE_CODE "#define inline __inline" CACHE INTERNAL "")
+		elseif (HAVE___INLINE__)
+			set (INLINE_CODE "#define inline __inline__" CACHE INTERNAL "")
+		else ()
+			set (INLINE_CODE "#define inline " CACHE INTERNAL "")
+		endif ()
+	endif ()
+endmacro (TEST_INLINE)

extern/libsndfile-modified/cmake/TestLargeFiles.cmake

@@ -0,0 +1,121 @@
+include (CheckIncludeFile)
+include (CheckTypeSize)
+include (CMakePushCheckState)
+
+macro (TEST_LARGE_FILES VARIABLE)
+
+if (NOT DEFINED ${VARIABLE})
+
+	cmake_push_check_state()
+
+	message (STATUS "")
+	message (STATUS "")
+	message (STATUS "Checking large files support...")
+
+	if (WIN32)
+		set (${VARIABLE} 1 CACHE INTERNAL "Result of tests for large file support" FORCE)
+		message (STATUS "")
+		message (STATUS "Result of checking large files support: supported with WinAPI")
+	else ()
+
+		message (STATUS "")
+		check_include_file(sys/types.h HAVE_SYS_TYPES_H)
+		check_include_file(stdint.h HAVE_STDINT_H)
+		check_include_file(stddef.h HAVE_STDDEF_H)
+		message (STATUS "")
+
+		message (STATUS "Checking size of off_t without any definitions:")
+		check_type_size (off_t SIZEOF_OFF_T)
+		message (STATUS "Checking of off_t without any definitions: ${SIZEOF_OFF_T}")
+		if (SIZEOF_OFF_T EQUAL 8)
+			set (LARGE_FILES_DEFINITIONS "" CACHE INTERNAL "64-bit off_t required definitions")
+			set (FILE64 TRUE)
+		else ()
+			unset (HAVE_SIZEOF_OFF_T CACHE)
+			unset (SIZEOF_OFF_T CACHE)
+			unset (SIZEOF_OFF_T_CODE CACHE)
+			cmake_pop_check_state()
+			set (FILE64 FALSE)
+		endif ()
+
+		if (NOT FILE64)
+			set (CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} /D_FILE_OFFSET_BITS=64)
+			message (STATUS "")
+			message (STATUS "Checking size of off_t with _FILE_OFFSET_BITS=64:")
+			check_type_size (off_t SIZEOF_OFF_T)
+			message (STATUS "Checking size of off_t with _FILE_OFFSET_BITS=64: ${SIZEOF_OFF_T}")
+			if (SIZEOF_OFF_T EQUAL 8)
+				set (_FILE_OFFSET_BITS 64 CACHE INTERNAL "")
+				set (_FILE_OFFSET_BITS_CODE "#define _FILE_OFFSET_BITS 64" CACHE INTERNAL "")
+				set (LARGE_FILES_DEFINITIONS ${LARGE_FILES_DEFINITIONS} "/D_FILE_OFFSET_BITS=64" CACHE INTERNAL "64-bit off_t required definitions")
+				set (FILE64 TRUE)
+			else ()
+				set (_FILE_OFFSET_BITS_CODE "" CACHE INTERNAL "")
+				unset (HAVE_SIZEOF_OFF_T CACHE)
+				unset (SIZEOF_OFF_T CACHE)
+				unset (SIZEOF_OFF_T_CODE CACHE)
+				cmake_pop_check_state()
+				set (FILE64 FALSE)
+			endif ()
+		endif ()
+
+		if (NOT FILE64)
+			set (CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} /D_LARGE_FILES)
+			message (STATUS "")
+			message (STATUS "Checking size of off_t with _LARGE_FILES:")
+			check_type_size (off_t SIZEOF_OFF_T)
+			message (STATUS "Checking size of off_t with _LARGE_FILES: ${SIZEOF_OFF_T}")
+			if (SIZEOF_OFF_T EQUAL 8)
+				set (_LARGE_FILES 1 CACHE INTERNAL "")
+				set (LARGE_FILES_DEFINITIONS ${LARGE_FILES_DEFINITIONS} "/D_LARGE_FILES" CACHE INTERNAL "64-bit off_t required definitions")
+				set (FILE64 TRUE)
+			else ()
+				unset (HAVE_SIZEOF_OFF_T CACHE)
+				unset (SIZEOF_OFF_T CACHE)
+				unset (SIZEOF_OFF_T_CODE CACHE)
+				cmake_pop_check_state()
+				set (FILE64 FALSE)
+			endif ()
+		endif ()
+
+		if (NOT FILE64)
+			set (CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} /D_LARGEFILE_SOURCE)
+			unset (HAVE_SIZEOF_OFF_T CACHE)
+			unset (SIZEOF_OFF_T CACHE)
+			unset (SIZEOF_OFF_T_CODE CACHE)
+			message (STATUS "")
+			message (STATUS "Checking size of off_t with _LARGEFILE_SOURCE:")
+			check_type_size (off_t SIZEOF_OFF_T)
+			message (STATUS "Checking size of off_t with _LARGEFILE_SOURCE: ${SIZEOF_OFF_T}")
+			if (SIZEOF_OFF_T EQUAL 8)
+				set (_LARGEFILE_SOURCE 1 CACHE INTERNAL "")
+				set (LARGE_FILES_DEFINITIONS ${LARGE_FILES_DEFINITIONS} "/D_LARGEFILE_SOURCE"  CACHE INTERNAL "64-bit off_t required definitions")
+				set (FILE64 TRUE)
+			else ()
+				cmake_pop_check_state()
+				set (FILE64 FALSE)
+			endif ()
+		endif ()
+
+		message (STATUS "")
+		if (FILE64)
+			set (${VARIABLE} 1 CACHE INTERNAL "Result of tests for large file support" FORCE)
+			if (NOT SIZEOF_OFF_T_REQURED_DEFINITIONS)
+				message (STATUS "Result of checking large files support: supported")
+			else ()
+				message (STATUS "Result of checking large files support: supported with ${LARGE_FILES_DEFINITIONS}")
+				message (STATUS "Add LARGE_FILES_DEFINITIONS to your compiler definitions or configure with _FILE_OFFSET_BITS,")
+				message (STATUS "_FILE_OFFSET_BITS_CODE, _LARGE_FILES and _LARGEFILE_SOURCE variables.")
+			endif ()
+		else ()
+			message ("Result of checking large files support: not supported")
+			set (${VARIABLE} 0 CACHE INTERNAL "Result of test for large file support" FORCE)
+		endif ()
+		message ("")
+		message ("")
+
+	endif ()
+
+endif (NOT DEFINED ${VARIABLE})
+
+endmacro (TEST_LARGE_FILES VARIABLE)

extern/libsndfile-modified/cmake/sqlite/FindSQLite3.cmake

@@ -0,0 +1,56 @@
+# - Find SQLite3
+# Find the native SQLite3 includes and libraries
+#
+#  SQLite3_INCLUDE_DIRS - where to find sqlite3.h, etc.
+#  SQLite3_LIBRARIES    - List of libraries when using SQLite3.
+#  SQLite3_FOUND        - True if SQLite3 found.
+
+if (SQLite3_INCLUDE_DIR)
+	# Already in cache, be silent
+	set (SQLite3_FIND_QUIETLY TRUE)
+endif ()
+
+find_package (PkgConfig QUIET)
+pkg_check_modules (PC_SQLite3 QUIET sqlite3)
+
+set (SQLite3_VERSION ${PC_SQLite3_VERSION})
+
+find_path (SQLite3_INCLUDE_DIR sqlite3.h
+	HINTS
+		${PC_SQLite3_INCLUDEDIR}
+		${PC_SQLite3_INCLUDE_DIRS}
+		${SQLite3_ROOT}
+	)
+
+find_library (SQLite3_LIBRARY
+	NAMES
+		sqlite3
+	HINTS
+		${PC_SQLite3_LIBDIR}
+		${PC_SQLite3_LIBRARY_DIRS}
+		${SQLite3_ROOT}
+	)
+
+include (FindPackageHandleStandardArgs)
+
+find_package_handle_standard_args (SQLite3
+	REQUIRED_VARS
+		SQLite3_LIBRARY
+		SQLite3_INCLUDE_DIR
+	VERSION_VAR
+		SQLite3_VERSION
+	)
+
+if (SQLite3_FOUND)
+	set (SQLite3_INCLUDE_DIRS ${SQLite3_INCLUDE_DIR})
+	set (SQLite3_LIBRARIES ${SQLite3_LIBRARY})
+	if (NOT TARGET SQLite::SQLite3)
+		add_library (SQLite::SQLite3 UNKNOWN IMPORTED)
+		set_target_properties (SQLite::SQLite3 PROPERTIES
+			INTERFACE_INCLUDE_DIRECTORIES "${SQLite3_INCLUDE_DIRS}"
+			IMPORTED_LOCATION "${SQLite3_LIBRARIES}"
+		)
+	endif ()
+endif ()
+
+mark_as_advanced (SQLite3_INCLUDE_DIR SQLite3_LIBRARY)

extern/libsndfile-modified/configure.ac

@@ -0,0 +1,761 @@
+dnl Copyright (C) 1999-2022  Erik de Castro Lopo <erikd@mega-nerd.com>.
+
+dnl Require autoconf version >= 2.69
+AC_PREREQ([2.69])
+
+AC_INIT([libsndfile],[1.2.2],[sndfile@mega-nerd.com],
+		[libsndfile],[http://libsndfile.github.io/libsndfile/])
+
+dnl Check whether we want to set defaults for CFLAGS, CXXFLAGS, CPPFLAGS and LDFLAGS
+AC_MSG_CHECKING([whether configure should try to set CFLAGS/CXXFLAGS/CPPFLAGS/LDFLAGS])
+AS_IF([test "x${CFLAGS+set}" = "xset" || test "x${CXXFLAGS+set}" = "xset" || test "x${CPPFLAGS+set}" = "xset" || test "x${LDFLAGS+set}" = "xset"], [
+		enable_flags_setting=no
+		: ${CFLAGS=""}
+		: ${CXXFLAGS=""}
+	], [
+		enable_flags_setting=yes
+		dnl Set to empty flags so AC_PROG_CC and
+		dnl AC_PROG_CXX do not add -g -O2
+		CFLAGS=""
+		CXXFLAGS=""
+	])
+AC_MSG_RESULT([${enable_flags_setting}])
+
+dnl Put config stuff in 'build-aux'.
+AC_CONFIG_AUX_DIR([build-aux])
+
+AC_CONFIG_SRCDIR([src/sndfile.c])
+AC_CANONICAL_HOST
+
+AC_CONFIG_MACRO_DIR([m4])
+AC_CONFIG_HEADERS([src/config.h])
+
+AM_INIT_AUTOMAKE([1.14 foreign dist-xz no-dist-gzip serial-tests subdir-objects])
+AM_SILENT_RULES([yes])
+
+dnl ====================================================================================
+
+AC_PROG_CC
+AC_PROG_CC_C99
+
+AS_IF([test "x$ac_cv_prog_cc_c99" = "xno"], [
+		AC_MSG_ERROR([libsndfile requires a C99 capable compiler!])
+	])
+
+AC_USE_SYSTEM_EXTENSIONS
+AC_PROG_CXX
+
+AC_LANG([C])
+AX_COMPILER_VENDOR
+AX_COMPILER_VERSION
+
+AC_LANG_PUSH([C++])
+AX_COMPILER_VENDOR
+AX_COMPILER_VERSION
+AC_LANG_POP([C++])
+
+AC_PROG_SED
+AM_PROG_AR
+
+LT_INIT([disable-static win32-dll])
+LT_PROG_RC
+
+AC_PROG_INSTALL
+AC_PROG_LN_S
+
+AM_PATH_PYTHON
+
+AC_CHECK_PROG([HAVE_AUTOGEN], [autogen], [yes], [no])
+AC_CHECK_PROG([HAVE_WINE], [wine], [yes], [no])
+AC_CHECK_PROG([HAVE_XCODE_SELECT], [xcode-select], [yes], [no])
+
+dnl ------------------------------------------------------------------------------------
+dnl  Rules for library version information:
+dnl
+dnl   1. Start with version information of `0:0:0' for each libtool library.
+dnl   2. Update the version information only immediately before a public release of
+dnl      your software. More frequent updates are unnecessary, and only guarantee
+dnl      that the current interface number gets larger faster.
+dnl   3. If the library source code has changed at all since the last update, then
+dnl      increment revision (`c:r:a' becomes `c:r+1:a').
+dnl   4. If any interfaces have been added, removed, or changed since the last update,
+dnl      increment current, and set revision to 0.
+dnl   5. If any interfaces have been added since the last public release, then increment
+dnl      age.
+dnl   6. If any interfaces have been removed since the last public release, then set age
+dnl      to 0.
+
+dnl   This is libtool version of library, we add it to `--version-info` property.
+
+m4_define([lt_current], [1])
+m4_define([lt_revision], [37])
+m4_define([lt_age], [0])
+
+dnl This is ABI version for linker scripts, CMake uses the same format for
+dnl VERSION property of shared library.
+dnl The formula is: c:r:a -> c-a:a:r
+
+m4_define([abi_version_major], [m4_eval(lt_current - lt_age)])
+m4_define([abi_version_minor], [lt_age])
+m4_define([abi_version_patch], [lt_revision])
+
+dnl ------------------------------------------------------------------------------------
+
+AC_CHECK_HEADERS([endian.h])
+AC_CHECK_HEADERS([byteswap.h])
+AC_CHECK_HEADERS([locale.h])
+AC_CHECK_HEADERS([sys/time.h])
+AC_CHECK_HEADERS([immintrin.h])
+AC_CHECK_HEADERS([stdbool.h])
+
+AC_HEADER_SYS_WAIT
+
+AC_CHECK_DECLS([S_IRGRP])
+AS_IF([test "x$ac_cv_have_decl_S_IRGRP" = "xyes"], [
+		AC_DEFINE_UNQUOTED([HAVE_DECL_S_IRGRP], [1], [Set to 1 if S_IRGRP is defined.])
+	], [
+		AC_DEFINE_UNQUOTED([HAVE_DECL_S_IRGRP], [0], [Set to 0 if S_IRGRP is not defined.])
+	])
+
+AM_CONDITIONAL([LINUX_MINGW_CROSS_TEST],
+	[test "x${build_os}:${host_os}:${HAVE_WINE}" = "xlinux-gnu:mingw32msvc:yes"])
+
+dnl ====================================================================================
+dnl  Couple of initializations here. Fill in real values later.
+
+SHLIB_VERSION_ARG=""
+
+dnl ====================================================================================
+dnl  Finished checking, handle options.
+
+AC_ARG_ENABLE(experimental,
+	AS_HELP_STRING([--enable-experimental], [enable experimental code]))
+
+AS_IF([test "x$enable_experimental" = "xyes"], [
+		EXPERIMENTAL_CODE=1
+	], [
+		EXPERIMENTAL_CODE=0
+	])
+AC_DEFINE_UNQUOTED([ENABLE_EXPERIMENTAL_CODE], [${EXPERIMENTAL_CODE}], [Set to 1 to enable experimental code.])
+
+AC_ARG_ENABLE([werror],
+	[AS_HELP_STRING([--enable-werror], [enable -Werror in all Makefiles])])
+
+AC_ARG_ENABLE([cpu-clip],
+	[AS_HELP_STRING([--disable-cpu-clip], [disable tricky cpu specific clipper])])
+
+AC_ARG_ENABLE([bow-docs],
+	[AS_HELP_STRING([--enable-bow-docs], [enable black-on-white html docs])])
+
+AC_ARG_ENABLE([sqlite],
+	[AS_HELP_STRING([--disable-sqlite], [disable use of sqlite])])
+
+AC_ARG_ENABLE([alsa],
+	[AS_HELP_STRING([--disable-alsa], [disable ALSA support (default=autodetect)])], [], [enable_alsa=auto])
+
+AC_ARG_ENABLE([external-libs],
+	[AS_HELP_STRING([--disable-external-libs], [disable use of FLAC, Ogg and Vorbis [[default=no]]])])
+
+AC_ARG_ENABLE([mpeg],
+	[AS_HELP_STRING([--disable-mpeg], [disable use of LAME/MPG123 for MPEG (MP3) [[defaults=no]]])])
+
+AC_ARG_ENABLE(octave,
+	[AS_HELP_STRING([--enable-octave], [enable building of GNU Octave module])])
+
+AC_ARG_ENABLE([full-suite],
+	[AS_HELP_STRING([--disable-full-suite], [disable building and installing programs, documentation, only build library [[default=no]]])])
+AM_CONDITIONAL([FULL_SUITE], [test "x$enable_full_suite" != "xno"])
+
+AC_ARG_ENABLE([test-coverage],
+	[AS_HELP_STRING([--enable-test-coverage], [enable test coverage])])
+AM_CONDITIONAL([ENABLE_TEST_COVERAGE], [test "x$enable_test_coverage" = "xyes"])
+
+AC_ARG_ENABLE([ossfuzzers],
+	[AS_HELP_STRING([--enable-ossfuzzers], [Whether to generate the fuzzers for OSS-Fuzz])])
+AM_CONDITIONAL([USE_OSSFUZZERS], [test "x$enable_ossfuzzers" = "xyes"])
+
+AC_SUBST([LIB_FUZZING_ENGINE])
+AM_CONDITIONAL([USE_OSSFUZZ_FLAG], [test "x$LIB_FUZZING_ENGINE" = "x-fsanitize=fuzzer"])
+AM_CONDITIONAL([USE_OSSFUZZ_STATIC], [test -f "$LIB_FUZZING_ENGINE"])
+
+dnl ====================================================================================
+dnl  Check types and their sizes.
+
+AC_CHECK_SIZEOF([wchar_t], [4])
+AC_CHECK_SIZEOF([short], [2])
+AC_CHECK_SIZEOF([int], [4])
+AC_CHECK_SIZEOF([long], [4])
+AC_CHECK_SIZEOF([float], [4])
+AC_CHECK_SIZEOF([double], [4])
+AC_CHECK_SIZEOF([void*], [8])
+AC_CHECK_SIZEOF([size_t], [4])
+AC_CHECK_SIZEOF([int64_t], [8])
+AC_CHECK_SIZEOF([long long], [8])
+
+dnl  Check for common 64 bit file offset types.
+AC_CHECK_SIZEOF([off_t], [1])
+
+AS_IF([test "x$enable_largefile:$ac_cv_sizeof_off_t" = "xno:8"], [
+		AC_MSG_ERROR(["Error : Cannot disable large file support because sizeof (off_t) == 8."])
+	])
+
+AS_CASE([$host_os],
+	[mingw32*], [
+		AC_DEFINE([__USE_MINGW_ANSI_STDIO], [1], [Set to 1 to use C99 printf/snprintf in MinGW.])
+		],
+
+	[
+		AS_IF([test "x$ac_cv_sizeof_off_t" = "x8"], [
+				dnl If sizeof (off_t) is 8, no further checking is needed.
+			], [
+				dnl Save the old sizeof (off_t) value  and then unset it to see if it
+				dnl changes when Large File Support is enabled.
+				pre_largefile_sizeof_off_t=$ac_cv_sizeof_off_t
+				unset ac_cv_sizeof_off_t
+
+				AC_SYS_LARGEFILE
+				AS_IF([test "x$ac_cv_sys_largefile_CFLAGS" = "xno"], [
+						ac_cv_sys_largefile_CFLAGS=""
+					])
+				AS_IF([test "x$ac_cv_sys_largefile_LDFLAGS" = "xno"], [
+						ac_cv_sys_largefile_LDFLAGS=""
+					])
+				AS_IF([test "x$ac_cv_sys_largefile_LIBS" = "xno"], [
+						ac_cv_sys_largefile_LIBS=""
+					])
+
+				AC_CHECK_SIZEOF(off_t,1)
+			])
+	])
+
+AC_TYPE_SSIZE_T
+
+dnl ====================================================================================
+dnl  Determine endian-ness of host processor.
+
+AC_C_BIGENDIAN([
+		dnl big-endian
+		ac_cv_c_big_endian=1
+		ac_cv_c_little_endian=0
+	], [
+		dnl little-endian
+		ac_cv_c_big_endian=0
+		ac_cv_c_little_endian=1
+	])
+
+AC_DEFINE_UNQUOTED([CPU_IS_BIG_ENDIAN], [${ac_cv_c_big_endian}], [Host processor is big endian.])
+AC_DEFINE_UNQUOTED([CPU_IS_LITTLE_ENDIAN], [${ac_cv_c_little_endian}], [Host processor is little endian.])
+
+dnl ====================================================================================
+dnl  Check for functions.
+
+AC_CHECK_FUNCS([malloc calloc realloc free])
+AC_CHECK_FUNCS([open read write lseek lseek64])
+AC_CHECK_FUNCS([fstat fstat64 ftruncate fsync])
+AC_CHECK_FUNCS([snprintf vsnprintf])
+AC_CHECK_FUNCS([gmtime gmtime_r localtime localtime_r gettimeofday])
+AC_CHECK_FUNCS([mmap getpagesize])
+AC_CHECK_FUNCS([setlocale])
+AC_CHECK_FUNCS([pipe waitpid])
+
+AC_SEARCH_LIBS([floor], [m], [], [
+		AC_MSG_ERROR([unable to find the floor() function!])
+	])
+AC_CHECK_FUNCS([floor ceil fmod lrint lrintf])
+
+dnl ====================================================================================
+dnl  Check for requirements for building plugins for other languages/enviroments.
+
+dnl Octave maths environment http://www.octave.org/
+AS_IF([test "x$cross_compiling" = "xno"], [
+		AS_IF([test "x$enable_octave" = "xno"], [
+				AM_CONDITIONAL(BUILD_OCTAVE_MOD, false)
+			], [
+				AC_OCTAVE_BUILD
+			])
+	], [
+		AM_CONDITIONAL(BUILD_OCTAVE_MOD, false)
+	])
+
+dnl ====================================================================================
+dnl  Check for Ogg, Vorbis and FLAC.
+
+HAVE_EXTERNAL_XIPH_LIBS=0
+EXTERNAL_XIPH_CFLAGS=""
+EXTERNAL_XIPH_LIBS=""
+EXTERNAL_XIPH_REQUIRE=""
+
+dnl Check for pkg-config outside the if statement.
+PKG_PROG_PKG_CONFIG
+AX_REQUIRE_DEFINED([PKG_INSTALLDIR])
+PKG_INSTALLDIR
+
+AS_IF([test -n "$PKG_CONFIG"], [
+		AS_IF([test "x$enable_external_libs" = "xno"], [
+				AC_MSG_WARN([[*** External libs (FLAC, Ogg, Vorbis) disabled. ***]])
+			], [
+				PKG_CHECK_MOD_VERSION(FLAC, flac >= 1.3.1, ac_cv_flac=yes, ac_cv_flac=no)
+
+				dnl Make sure the FLAC_CFLAGS value is sane.
+				FLAC_CFLAGS=`echo $FLAC_CFLAGS | $SED "s|include/FLAC|include|"`
+
+				PKG_CHECK_MOD_VERSION(OGG, ogg >= 1.3.0, ac_cv_ogg=yes, ac_cv_ogg=no)
+
+				AS_IF([test "x$enable_experimental" = "xyes"], [
+						PKG_CHECK_MOD_VERSION(SPEEX, speex >= 1.2, ac_cv_speex=yes, ac_cv_speex=no)
+					], [
+						SPEEX_CFLAGS=""
+						SPEEX_LIBS=""
+					])
+
+				dnl Vorbis versions earlier than 1.2.3 have bugs that cause the libsndfile
+				dnl test suite to fail on MIPS, PowerPC and others.
+				dnl See: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=549899
+				PKG_CHECK_MOD_VERSION(VORBIS, vorbis >= 1.2.3, ac_cv_vorbis=yes, ac_cv_vorbis=no)
+				PKG_CHECK_MOD_VERSION(VORBISENC, vorbisenc >= 1.2.3, ac_cv_vorbisenc=yes, ac_cv_vorbisenc=no)
+
+				PKG_CHECK_MOD_VERSION(OPUS, opus >= 1.1, ac_cv_opus=yes, ac_cv_opus=no)
+				enable_external_libs=yes
+			])
+
+			AS_IF([test "x$ac_cv_flac$ac_cv_ogg$ac_cv_vorbis$ac_cv_vorbisenc$ac_cv_opus" = "xyesyesyesyesyes"], [
+					HAVE_EXTERNAL_XIPH_LIBS=1
+					enable_external_libs=yes
+
+					EXTERNAL_XIPH_CFLAGS="$FLAC_CFLAGS $VORBIS_CFLAGS $VORBISENC_CFLAGS $SPEEX_CFLAGS $OPUS_CFLAGS $OGG_CFLAGS "
+					EXTERNAL_XIPH_LIBS="$FLAC_LIBS $VORBIS_LIBS $VORBISENC_LIBS $SPEEX_LIBS $OPUS_LIBS $OGG_LIBS "
+					EXTERNAL_XIPH_REQUIRE="flac ogg vorbis vorbisenc opus"
+
+					if test x$ac_cv_speex = "xyes" ; then
+						EXTERNAL_XIPH_REQUIRE="$EXTERNAL_XIPH_REQUIRE speex"
+					fi
+				], [
+					AS_ECHO([""])
+					AC_MSG_WARN([[*** One or more of the external libraries (ie libflac, libogg,]])
+					AC_MSG_WARN([[*** libvorbis and libopus) is either missing (possibly only the development]])
+					AC_MSG_WARN([[*** headers) or is of an unsupported version.]])
+					AC_MSG_WARN([[***]])
+					AC_MSG_WARN([[*** Unfortunately, for ease of maintenance, the external libs]])
+					AC_MSG_WARN([[*** are an all or nothing affair.]])
+					AS_ECHO([""])
+					enable_external_libs=no
+				])
+	])
+
+AC_DEFINE_UNQUOTED([HAVE_EXTERNAL_XIPH_LIBS], [$HAVE_EXTERNAL_XIPH_LIBS], [Will be set to 1 if flac, ogg, vorbis, and opus are available.])
+
+dnl ====================================================================================
+dnl  Check for MPEG libraris liblame
+
+ac_cv_lame="no"
+ac_cv_mpg123="no"
+HAVE_MPEG=0
+EXTERNAL_MPEG_REQUIRE=""
+EXTERNAL_MPEG_LIBS=""
+
+AS_IF([test -n "$PKG_CONFIG"], [
+		AS_IF([test "x$enable_mpeg" = "xno"], [
+				AC_MSG_WARN([[*** MPEG (Lame/MPG123) disabled. ***]])
+			], [
+				AC_CHECK_HEADER(lame/lame.h,
+								lame_header_found="yes",
+								lame_header_found="no")
+				AC_SEARCH_LIBS(lame_set_VBR_q, [lame mp3lame], [lame_lib_found="yes"], [lame_lib_found="no"])
+				AS_IF([test "x$lame_lib_found$lame_header_found" = "xyesyes"], [
+						ac_cv_lame="yes"
+					], [
+						AC_MSG_WARN([["MPEG support selected but external Lame library cannot be found.]])
+					])
+
+				PKG_CHECK_MOD_VERSION([MPG123], [libmpg123 >= 1.25.10], [
+						ac_cv_mpg123="yes"
+					], [
+						AC_MSG_WARN([["MPEG support selected but external MPG123 library cannot be found.]])
+					])
+
+				AS_IF([test "x$ac_cv_lame$ac_cv_mpg123" = "xyesyes"], [
+						enable_mpeg="yes"
+						HAVE_MPEG=1
+						EXTERNAL_MPEG_REQUIRE="libmpg123"
+						EXTERNAL_MPEG_LIBS="-lmp3lame"
+						MPEG_CFLAGS="$MPG123_CFLAGS"
+						MPEG_LIBS="$MPG123_LIBS"
+					], [
+						enable_mpeg="no"
+						AS_ECHO([""])
+						AC_MSG_WARN([[*** MPEG support disabled.]])
+						AS_ECHO([""])
+					])
+			])
+	])
+
+AC_DEFINE_UNQUOTED([HAVE_MPEG], [$HAVE_MPEG], [Will be set to 1 if lame, mpg123 mpeg support is available.])
+
+dnl ====================================================================================
+dnl  Check for libsqlite3 (only used in regtest).
+
+ac_cv_sqlite3=0
+AS_IF([test "x$enable_sqlite" != "xno"], [
+		PKG_CHECK_MOD_VERSION([SQLITE3], [sqlite3 >= 3.2], [ac_cv_sqlite3=1], [ac_cv_sqlite3=0])
+	])
+
+AC_DEFINE_UNQUOTED([HAVE_SQLITE3], [${ac_cv_sqlite3}], [Set to 1 if you have libsqlite3.])
+AM_CONDITIONAL([HAVE_SQLITE3], [test "x$ac_cv_sqlite3" = "x1"])
+
+dnl ====================================================================================
+dnl  Determine if the processor can do clipping on float to int conversions.
+
+AS_IF([test "x$enable_cpu_clip" != "xno"], [
+		MN_C_CLIP_MODE
+	], [
+		AS_ECHO(["checking processor clipping capabilities... disabled"])
+		ac_cv_c_clip_positive=0
+		ac_cv_c_clip_negative=0
+	])
+
+AC_DEFINE_UNQUOTED([CPU_CLIPS_POSITIVE], [${ac_cv_c_clip_positive}],
+	[Host processor clips on positive float to int conversion.])
+AC_DEFINE_UNQUOTED([CPU_CLIPS_NEGATIVE], [${ac_cv_c_clip_negative}],
+	[Host processor clips on negative float to int conversion.])
+
+dnl ====================================================================================
+dnl  Host OS specific stuff.
+
+OS_SPECIFIC_CFLAGS=""
+OS_SPECIFIC_LINKS=""
+os_is_win32=0
+os_is_openbsd=0
+use_windows_api=0
+AS_CASE([$host_os],
+	[darwin* | rhapsody*], [
+		AS_IF([test "x$HAVE_XCODE_SELECT" = "xyes"], [
+				developer_path=`xcode-select --print-path`
+			], [
+				developer_path="/Developer"
+			])
+		OS_SPECIFIC_LINKS="-framework CoreAudio -framework AudioToolbox -framework CoreFoundation"],
+	[mingw*], [
+		os_is_win32=1
+		use_windows_api=1
+		OS_SPECIFIC_LINKS="-lwinmm"],
+	[openbsd*], [
+		os_is_openbsd=1
+	])
+
+AC_DEFINE_UNQUOTED([OS_IS_WIN32], [${os_is_win32}], [Set to 1 if compiling for Win32])
+AC_DEFINE_UNQUOTED([OS_IS_OPENBSD], [${os_is_openbsd}], [Set to 1 if compiling for OpenBSD])
+AC_DEFINE_UNQUOTED([USE_WINDOWS_API], [${use_windows_api}], [Set to 1 to use the native windows API])
+AM_CONDITIONAL(USE_WIN_VERSION_FILE, test ${use_windows_api} -eq 1)
+
+dnl ====================================================================================
+dnl  Check for ALSA.
+
+AS_IF([test "x$enable_alsa" != "xno"], [
+		PKG_CHECK_MODULES([ALSA], [alsa], [
+				dnl actually test whether ALSA really works, in
+				dnl order to dodge wrong cross-compilation pickups
+				save_CFLAGS="${CFLAGS}"
+				save_LIBS="${LIBS}"
+				CFLAGS="${CFLAGS} ${ALSA_CFLAGS}"
+				LIBS="${LIBS} ${ALSA_LIBS}"
+				AC_CHECK_HEADERS([alsa/asoundlib.h])
+				AS_IF([test "x$ac_cv_header_alsa_asoundlib_h" = "xyes"], [
+						dnl ALSA definitely works
+						AC_DEFINE([HAVE_ALSA], [1], [Set to 1 if you have alsa])
+						alsa_works="yes"
+					], [
+						dnl picked up wrong ALSA
+						alsa_works="no"
+
+						dnl reset flags
+						ALSA_CFLAGS=""
+						ALSA_LIBS=""
+					])
+				CFLAGS="${save_CFLAGS}"
+				LIBS="${save_LIBS}"
+			], [
+				dnl could not find ALSA
+				alsa_works="no"
+			])
+
+		AS_IF([test "x$alsa_works" = "xno"], [
+				AS_IF([test "x$enable_alsa" = "xyes"], [
+						dnl explicitly passed --enable-alsa, hence error out loud and clearly
+						AC_MSG_ERROR([You explicitly requested alsa support, but alsa could not be found!])
+					], [
+						dnl did not explicitly pass --enable-alsa, relying on default automagic on
+						enable_alsa="no (auto)"
+					])
+			])
+	])
+
+dnl ====================================================================================
+dnl  Check for OpenBSD's sndio.
+
+SNDIO_LIBS=""
+HAVE_SNDIO_H=0
+AS_CASE([$host_os],
+	[openbsd*], [
+		AC_CHECK_HEADERS(sndio.h)
+		AS_IF([test "x$ac_cv_header_sndio_h" = "xyes"], [
+				SNDIO_LIBS="-lsndio"
+				HAVE_SNDIO_H=1
+			])
+	])
+
+AC_DEFINE_UNQUOTED([HAVE_SNDIO_H], [${HAVE_SNDIO_H}], [Set to 1 if <sndio.h> is available.])
+
+dnl ====================================================================================
+dnl  Test for sanity when cross-compiling.
+
+AS_IF([test "x$ac_cv_sizeof_short" != "x2"], [
+		AC_MSG_WARN([[******************************************************************]])
+		AC_MSG_WARN([[*** sizeof (short) != 2.                                          ]])
+		AC_MSG_WARN([[******************************************************************]])
+	])
+
+AS_IF([test "x$ac_cv_sizeof_int" != "x4"], [
+		AC_MSG_WARN([[******************************************************************]])
+		AC_MSG_WARN([[*** sizeof (int) != 4                                             ]])
+		AC_MSG_WARN([[******************************************************************]])
+	])
+
+AS_IF([test "x$ac_cv_sizeof_float" != "x4"], [
+		AC_MSG_WARN([[******************************************************************]])
+		AC_MSG_WARN([[*** sizeof (float) != 4.                                          ]])
+		AC_MSG_WARN([[******************************************************************]])
+	])
+
+AS_IF([test "x$ac_cv_sizeof_double" != "x8"], [
+		AC_MSG_WARN([[******************************************************************]])
+		AC_MSG_WARN([[*** sizeof (double) != 8.                                         ]])
+		AC_MSG_WARN([[******************************************************************]])
+	])
+
+AS_IF([test "x$ac_cv_prog_HAVE_AUTOGEN" = "xno"], [
+		AC_MSG_WARN([[Touching files in directory tests/.]])
+		touch tests/*.c tests/*.h
+	])
+
+dnl ====================================================================================
+dnl  Settings for the HTML documentation.
+
+AS_IF([test "x$enable_bow_docs" = "xyes"], [
+		HTML_BGCOLOUR="white"
+		HTML_FGCOLOUR="black"
+	], [
+		HTML_BGCOLOUR="black"
+		HTML_FGCOLOUR="white"
+	])
+
+dnl ====================================================================================
+dnl  Now use the information from the checking stage.
+
+win32_target_dll=0
+COMPILER_IS_GCC=0
+
+AS_IF([test "x$enable_flags_setting" = "xyes"], [
+		AX_APPEND_COMPILE_FLAGS([-O2 -pipe], [CFLAGS])
+
+		AC_LANG_PUSH([C++])
+		AX_APPEND_COMPILE_FLAGS([-O2 -pipe], [CXXFLAGS])
+		AC_LANG_POP([C++])
+
+		AS_CASE([${host_os}],
+			[darwin*], [
+				ldflags_test="-Wl,-dead_strip_dylibs"],
+			[linux*], [
+				ldflags_test="-Wl,-O1 -Wl,--as-needed -Wl,--no-undefined -Wl,--gc-sections"]
+			)
+		AX_APPEND_LINK_FLAGS([${ldflags_test}], [LDFLAGS])
+	])
+
+AS_IF([test "x$enable_werror" = "xyes"], [
+		AX_APPEND_COMPILE_FLAGS([-Werror], [CFLAGS])
+
+		AC_LANG_PUSH([C++])
+		AX_APPEND_COMPILE_FLAGS([-Werror], [CXXFLAGS])
+		AC_LANG_POP([C++])
+	])
+
+common_flags="-Wall -Wextra -Wpointer-arith -Wcast-align -Wcast-qual -Wshadow -Wwrite-strings -Wundef -Wuninitialized -Winit-self"
+common_cflags="${common_flags}"
+dnl Clang doesn't know about -Wno-format-truncation
+dnl and would spew tons of warnings otherwise.
+AS_IF([test "x$ax_cv_c_compiler_vendor" = "xgnu"], [
+		common_cflags+=" -Wno-format-truncation"
+	])
+common_cxxflags="${common_flags}"
+AS_IF([test "x$ax_cv_cxx_compiler_vendor" = "xgnu"], [
+		common_cxxflags+=" -Wno-format-truncation"
+	])
+
+AX_APPEND_COMPILE_FLAGS([${common_cflags} -Wvla -Wbad-function-cast -Wnested-externs -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Waggregate-return], [CFLAGS])
+
+AC_LANG_PUSH([C++])
+AX_APPEND_COMPILE_FLAGS([${common_cxxflags} -Wctor-dtor-privacy -Wnon-virtual-dtor -Woverloaded-virtual -Wreorder -Wsign-promo], [CXXFLAGS])
+AC_LANG_POP([C++])
+
+AS_IF([test "x$enable_test_coverage" = "xyes"], [
+		AX_APPEND_COMPILE_FLAGS([-coverage], [CFLAGS])
+	])
+
+dnl some distributions (such as Gentoo) have _FORTIFY_SOURCE always
+dnl enabled. We test for this situation in order to prevent polluting
+dnl the console with messages of macro redefinitions.
+AX_ADD_FORTIFY_SOURCE
+
+AS_IF([test "x$ax_cv_c_compiler_vendor" = "xgnu"], [
+		dnl OS specific tweaks.
+		AS_CASE([$host_os],
+			[darwin* | rhapsody*], [
+				dnl Disable -Wall, -pedantic and -Wshadow for Apple Darwin/Rhapsody.
+				dnl System headers on these systems are broken.
+				temp_CFLAGS=`echo $CFLAGS | $SED "s/-Wall -pedantic//" | $SED "s/-Wshadow//" | $SED "s/-Waggregate-return//"`
+				CFLAGS=$temp_CFLAGS
+				SHLIB_VERSION_ARG="-Wl,-exported_symbols_list -Wl,\$(top_srcdir)/src/Symbols.darwin"],
+			[mingw*], [
+				SHLIB_VERSION_ARG="-Wc,-static-libgcc -Wl,\$(top_srcdir)/src/libsndfile-1.def"
+				win32_target_dll=1
+				AS_IF([test "x$enable_shared" = "xno"], [
+						win32_target_dll=0
+					])
+				AX_APPEND_COMPILE_FLAGS([-mstackrealign], [CFLAGS])
+				],
+			[os2*], [
+				SHLIB_VERSION_ARG="-Wl,-export-symbols \$(top_srcdir)/src/Symbols.os2"
+			])
+
+		COMPILER_IS_GCC=1
+	])
+
+AS_CASE([$host_os], [linux*|kfreebsd*-gnu*|gnu*],  [SHLIB_VERSION_ARG="-Wl,--version-script=\$(top_srcdir)/src/Symbols.gnu-binutils"])
+
+AC_DEFINE_UNQUOTED([WIN32_TARGET_DLL], [${win32_target_dll}], [Set to 1 if windows DLL is being built.])
+AC_DEFINE_UNQUOTED([COMPILER_IS_GCC], [${COMPILER_IS_GCC}], [Set to 1 if the compile is GNU GCC.])
+
+CFLAGS="$CFLAGS $OS_SPECIFIC_CFLAGS"
+
+AS_IF([test "x$CFLAGS" = "x"], [
+		AC_MSG_ERROR(["Error in configure script. CFLAGS has been screwed up."])
+	])
+
+HOST_TRIPLET="${host_cpu}-${host_vendor}-${host_os}"
+
+AC_DEFINE_UNQUOTED([HOST_TRIPLET], [${HOST_TRIPLET}], [The host triplet of the compiled binary.])
+
+AS_IF([test "$HOST_TRIPLET" = "x86_64-w64-mingw32"], [
+		OS_SPECIFIC_LINKS=" -static-libgcc $OS_SPECIFIC_LINKS"
+	])
+
+WIN_RC_VERSION=`echo $PACKAGE_VERSION | $SED -e "s/pre.*//" -e "s/beta.*//" -e "s/\./,/g"`
+
+
+AS_IF([test "x$enable_static" = "xno"], [
+		SRC_BINDIR=src/.libs/
+		TEST_BINDIR=tests/.libs/
+	], [
+		SRC_BINDIR=src/
+		TEST_BINDIR=tests/
+	])
+
+dnl -------------------------------------------------------------------------------
+
+AC_SUBST(HOST_TRIPLET)
+
+AC_SUBST(HTML_BGCOLOUR)
+AC_SUBST(HTML_FGCOLOUR)
+
+AC_SUBST(SHLIB_VERSION_ARG)
+AC_SUBST([SHARED_VERSION_INFO], [lt_current:lt_revision:lt_age])
+AC_SUBST([ABI_VERSION], [abi_version_major.abi_version_minor.abi_version_patch])
+AC_SUBST(CLEAN_VERSION)
+AC_SUBST(VERSION_MAJOR)
+AC_SUBST(GEN_TOOL)
+
+AC_SUBST(WIN_RC_VERSION)
+
+AC_SUBST(HAVE_EXTERNAL_XIPH_LIBS)
+AC_SUBST(HAVE_MPEG)
+AC_SUBST(OS_SPECIFIC_CFLAGS)
+AC_SUBST(OS_SPECIFIC_LINKS)
+AC_SUBST(SNDIO_LIBS)
+
+AC_SUBST(EXTERNAL_XIPH_CFLAGS)
+AC_SUBST(EXTERNAL_XIPH_LIBS)
+AC_SUBST(EXTERNAL_XIPH_REQUIRE)
+AC_SUBST(EXTERNAL_MPEG_LIBS)
+AC_SUBST(EXTERNAL_MPEG_REQUIRE)
+AC_SUBST(MPG123_CFLAGS)
+AC_SUBST(MPG123_LIBS)
+AC_SUBST(MPEG_CFLAGS)
+AC_SUBST(MPEG_LIBS)
+AC_SUBST(SRC_BINDIR)
+AC_SUBST(TEST_BINDIR)
+
+AC_CONFIG_FILES([
+	Makefile Octave/Makefile
+	src/version-metadata.rc
+	tests/test_wrapper.sh tests/pedantic-header-test.sh
+	sndfile.pc
+	Scripts/build-test-tarball.mk
+	])
+AC_OUTPUT
+
+dnl ====================================================================================
+
+AS_IF([test -z "$PKG_CONFIG"], [
+		AS_ECHO(["    *****************************************************************"])
+		AS_ECHO(["    ***          The pkg-config program is missing.               ***"])
+		AS_ECHO(["    *** External FLAC/Ogg/Vorbis libs cannot be found without it. ***"])
+		AS_ECHO(["    ***       http://pkg-config.freedesktop.org/wiki/             ***"])
+		AS_ECHO(["    *****************************************************************"])
+	])
+
+AX_RECURSIVE_EVAL([$libdir], [full_absolute_libdir])
+AX_RECURSIVE_EVAL([$bindir], [full_absolute_bindir])
+AX_RECURSIVE_EVAL([$pkgconfigdir], [full_absolute_pkgconfigdir])
+AX_RECURSIVE_EVAL([$htmldir], [full_absolute_htmldir])
+AC_MSG_RESULT([
+-=-=-=-=-=-=-=-=-=-= Configuration Complete =-=-=-=-=-=-=-=-=-=-=-
+
+  Configuration summary :
+
+    libsndfile version : .................. ${VERSION}
+
+    Host CPU : ............................ ${host_cpu}
+    Host Vendor : ......................... ${host_vendor}
+    Host OS : ............................. ${host_os}
+
+    CFLAGS : .............................. ${CFLAGS}
+    CXXFLAGS : ............................ ${CXXFLAGS}
+    CPPFLAGS : ............................ ${CPPFLAGS}
+    LDFLAGS : ............................. ${LDFLAGS}
+
+    Experimental code : ................... ${enable_experimental:-no}
+    Using ALSA in example programs : ...... ${enable_alsa:-no}
+    External FLAC/Ogg/Vorbis/Opus : ....... ${enable_external_libs:-no}
+    External MPEG Lame/MPG123 : ........... ${enable_mpeg:-no}
+    Building Octave interface : ........... ${OCTAVE_BUILD}
+
+  Tools :
+
+    C Compiler Vendor is : ................ ${ax_cv_c_compiler_vendor} (${ax_cv_c_compiler_version})
+    CXX Compiler Vendor is : .............. ${ax_cv_cxx_compiler_vendor} (${ax_cv_cxx_compiler_version})
+
+    Sanitizer enabled : ................... ${enable_sanitizer:-no}
+
+  Installation directories :
+
+    Library directory : ................... ${full_absolute_libdir}
+    Program directory : ................... ${full_absolute_bindir}
+    Pkgconfig directory : ................. ${full_absolute_pkgconfigdir}
+    HTML docs directory : ................. ${full_absolute_htmldir}
+
+Compiling some other packages against libsndfile may require
+the addition of '$full_absolute_pkgconfigdir' to the
+PKG_CONFIG_PATH environment variable.
+])
+
+dnl Remove symlink created by Scripts/android-configure.sh.
+rm -f gdbclient

extern/libsndfile-modified/docs/FAQ.md

@@ -0,0 +1,482 @@
+---
+layout: default
+title: libsndfile : Frequently Asked Questions.
+---
+
+# libsndfile : Frequently Asked Questions
+
+1. [Do you plan to support XYZ codec in libsndfile?](#Q001)
+2. [In version 0 the SF\_INFO struct had a pcmbitwidth field but version 1 does not. Why?](#Q002)
+3. [Compiling is really slow on MacOS X. Why?](#Q003)
+4. [When trying to compile libsndfile on Solaris I get a "bad substitution" error during linking. What can I do to fix this?](#Q004)
+5. [Why doesn't libsndfile do interleaving/de-interleaving?](#Q005)
+6. [What's the best format for storing temporary files?](#Q006)
+7. [On Linux/Unix/MacOS X, what's the best way of detecting the presence of libsndfile?](#Q007)
+8. [I have libsndfile installed and now I want to use it. I just want a simple Makefile\! What do I do?](#Q008)
+9. [How about adding the ability to write/read sound files to/from memory buffers?](#Q009)
+10. [Reading a 16 bit PCM file as normalised floats and then writing them back changes some sample values. Why?](#Q010)
+11. [I'm having problems with u-law encoded WAV files generated by libsndfile in Winamp. Why?](#Q011)
+12. [I'm looking at sf\_read\*. What are items? What are frames?](#Q012)
+13. [Why can't libsndfile open this Sound Designer II (SD2) file?](#Q013)
+14. [I'd like to statically link libsndfile to my closed source application. Can I buy a license so that this is possible?](#Q014)
+15. [My program is crashing during a call to a function in libsndfile. Is this a bug in libsndfile?](#Q015)
+16. [Will you accept a fix for compiling libsndfile with compiler X?](#Q016)
+17. [Can libsndfile read/write files from/to UNIX pipes?](#Q017)
+18. [Is it possible to build a Universal Binary on Mac OS X?](#Q018)
+19. [I have project files for Visual Studio / XCode / Whatever. Why don't you distribute them with libsndfile?](#Q019)
+20. [Why doesn't libsndfile support MP3?](#Q020)
+21. [How do I use libsndfile in a closed source or commercial program and comply with the license?](#Q021)
+22. [What versions of windows does libsndfile work on?](#Q022)
+23. [I'm cross compiling libsndfile for another platform. How can I run the test suite?](#Q023)
+
+-----
+
+## Q1 : Do you plan to support XYZ codec in libsndfile? {#Q001}
+
+If source code for XYZ codec is available under a suitable license (LGPL, BSD,
+MIT etc) then yes, I'd like to add it.
+
+If suitable documentation is available on how to decode and encode the format
+then maybe, depending on how much work is involved.
+
+If XYZ is some proprietary codec where no source code or documentation is
+available then no.
+
+So if you want support for XYZ codec, first find existing source code or
+documentation. If you can't find either then the answer is no.
+
+## Q2 : In version 0 the SF\_INFO struct had a pcmbitwidth field but version 1 does not. Why? {#Q002}
+
+This was dropped for a number of reasons:
+
+- pcmbitwidth makes little sense on compressed or floating point formats
+- with the new API you really don't need to know it
+
+As documented [here](api.md#note-1) there is now a well defined behaviour which
+ensures that no matter what the bit width of the source file, the scaling always
+does something sensible. This makes it safe to read 8, 16, 24 and 32 bit PCM
+files using `sf_read_short()` and always have the optimal behaviour.
+
+## Q3 : Compiling is really slow on MacOS X. Why? {#Q003}
+
+When you configure and compile libsndfile, it uses the /bin/sh shell for a
+number of tasks (ie configure script and libtool). Older versions of OS X
+(10.2?) shipped a really crappy Bourne shell as /bin/sh which resulted in
+**really** slow compiles. Newer version of OS X ship GNU Bash as /bin/sh and
+this answer doesn't apply in that case.
+
+To fix this I suggest that you install the GNU Bash shell, rename /bin/sh to
+/bin/sh.old and make a symlink from /bin/sh to the bash shell. Bash is designed
+to behave as a Bourne shell when it is called as /bin/sh.
+
+When I did this on my iBook running MacOS X, compile times dropped from 13
+minutes to 3 minutes.
+
+## Q4 : When trying to compile libsndfile on Solaris I get a "bad substitution" error on linking. Why? {#Q004}
+
+It seems that the Solaris Bourne shell disagrees with GNU libtool.
+
+To fix this I suggest that you install the GNU Bash shell, rename /bin/sh to
+/bin/sh.old and make a symlink from /bin/sh to the bash shell. Bash is designed
+to behave as a Bourne shell when it is called as /bin/sh.
+
+## Q5 : Why doesn't libsndfile do interleaving/de-interleaving? {#Q005}
+
+This problem is bigger than it may seem at first.
+
+For a stereo file, it is a pretty safe bet that a simple interleaving/
+de-interleaving could satisfy most users. However, for files with more than 2
+channels this is unlikely to be the case. If the user has a 4 channel file and
+want to play that file on a stereo output sound card they either want the first
+2 channels or they want some mixed combination of the 4 channels.
+
+When you add more channels, the combinations grow exponentially and it becomes
+increasingly difficult to cover even a sensible subset of the possible
+combinations. On top of that, coding any one style of interleaver/de-interleaver
+is trivial, while coding one that can cover all combinations is far from
+trivial. This means that this feature will not be added any time soon.
+
+## Q6 : What's the best format for storing temporary files? {#Q006}
+
+When you want to store temporary data there are a number of requirements:
+
+- A simple, easy to parse header.
+- The format must provide the fastest possible read and write rates (ie avoid
+  conversions and encoding/decoding).
+- The file format must be reasonably common and playable by most players.
+- Able to store data in either endian-ness.
+
+The format which best meets these requirements is AU, which allows data to be
+stored in any one of short, int, float and double (among others) formats.
+
+For instance, if an application uses float data internally, its temporary files
+should use a format of (SF_ENDIAN_CPU | SF_FORMAT_AU | SF_FORMAT_FLOAT) which
+will store big endian float data in big endian CPUs and little endian float data
+on little endian CPUs. Reading and writing this format will not require any
+conversions or byte swapping regardless of the host CPU.
+
+## Q7 : On Linux/Unix/MaxOS X, what's the best way of detecting the presence of libsndfile using autoconf? {#Q007}
+
+libsndfile uses the pkg-config (man pkg-config) method of registering itself
+with the host system. The best way of detecting its presence is using something
+like this in configure.ac (or configure.in):
+
+    PKG_CHECK_MODULES(SNDFILE, sndfile >= 1.0.2, ac_cv_sndfile=1, ac_cv_sndfile=0)
+
+    AC_DEFINE_UNQUOTED([HAVE_SNDFILE],${ac_cv_sndfile},
+        [Set to 1 if you have libsndfile.])
+
+    AC_SUBST(SNDFILE_CFLAGS)
+    AC_SUBST(SNDFILE_LIBS)
+
+This will automatically set the **SNDFILE_CFLAGS** and **SNDFILE_LIBS**
+variables which can be used in Makefile.am like this:
+
+    SNDFILE_CFLAGS = @SNDFILE_CFLAGS@
+    SNDFILE_LIBS = @SNDFILE_LIBS@
+
+If you install libsndfile from source, you will probably need to set the
+**PKG_CONFIG_PATH** environment variable as suggested at the end of the
+libsndfile configure process. For instance on my system I get this:
+
+    -=-=-=-=-=-=-=-=-=-= Configuration Complete =-=-=-=-=-=-=-=-=-=-
+
+        Configuration summary :
+
+        Version : ..................... 1.0.5
+        Experimental code : ........... no
+
+        Tools :
+
+        Compiler is GCC : ............. yes
+        GCC major version : ........... 3
+
+        Installation directories :
+
+        Library directory : ........... /usr/local/lib
+        Program directory : ........... /usr/local/bin
+        Pkgconfig directory : ......... /usr/local/lib/pkgconfig
+
+    Compiling some other packages against libsndfile may require
+    the addition of "/usr/local/lib/pkgconfig" to the
+    PKG_CONFIG_PATH environment variable.
+
+## Q8 : I have libsndfile installed and now I want to use it. I just want a simple Makefile\! What do I do? {#Q008}
+
+The **pkg-config** program makes finding the correct compiler flag values and
+library location far easier. During the installation of libsndfile, a file named
+**sndfile.pc** is installed in the directory **${libdir}/pkgconfig** (ie if
+libsndfile is installed in **/usr/local/lib**, **sndfile.pc** will be installed
+in **/usr/local/lib/pkgconfig/**).
+
+In order for pkg-config to find sndfile.pc it may be necessary to point the
+environment variable **PKG_CONFIG_PATH** in the right direction.
+
+    export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig
+
+Then, to compile a C file into an object file, the command would be:
+
+    gcc `pkg-config --cflags sndfile` -c somefile.c
+
+and to link a number of objects into an executable that links against
+libsndfile, the command would be:
+
+    gcc `pkg-config --libs sndfile` obj1.o obj2.o -o program
+
+## Q9 : How about adding the ability to write/read sound files to/from memory buffers? {#Q009}
+
+This has been [added](api.md#open_virtual) for version 1.0.12.
+
+## Q10 : Reading a 16 bit PCM file as normalised floats and then writing them back changes some sample values. Why? {#Q010}
+
+This is caused by the fact that the conversion from 16 bit short to float is
+done by dividing by 32768 (0x8000 in hexadecimal) while the conversion from
+float to 16 bit short is done by multiplying by 32767 (0x7FFF in hex). So for
+instance, a value in a 16 bit PCM file of 20000 gets read as a floating point
+number of 0.6103515625 (20000.0 / 0x8000). Converting that back to a 16 bit
+short results in a value of 19999.3896484375 (0.6103515625 \* 0x7FFF) which then
+gets rounded down to 19999.
+
+You will notice that for this particular case, the error is 1 in 20000 or
+0.005%. Interestingly, for values of less than 16369, dividing by 0x8000
+followed by multiplying by 0x7FFF and then rounding the result, gives back the
+original value. It turns out that as long as the host operating system supplies
+the 1999 ISO C Standard functions **lrintf** and **lrint** (or a replacement has
+been supplied) then the maximum possible error is 1 in 16369 or about 0.006%.
+
+Regardless of the size of the error, the reason why this is done is rather
+subtle.
+
+In a file containing 16 bit PCM samples, the values are restricted to the range
+[-32768, 32767] while we want floating point values in the range [-1.0, 1.0].
+The only way to do this conversion is to do a floating point division by a value
+of 0x8000. Converting the other way, the only way to ensure that floating point
+values in the range [-1.0, 1.0] are within the valid range allowed by a 16 bit
+short is to multiply by 0x7FFF.
+
+Some people would say that this is a severe short-coming of libsndfile. I would
+counter that anybody who is constantly converting back and forth between 16 bit
+shorts and normalised floats is going to suffer other losses in audio quality
+that they should also be concerned about.
+
+Since this problem only occurs when converting between integer data on disk and
+normalized floats in the application, it can be avoided by using something other
+than normalized floats in the application. Alternatives to normalized floats are
+the **short** and **int** data types (ie using sf_read_short or sf_read_int) or
+using un-normalized floats (see
+[SFC_SET_NORM_FLOAT](command.html#sfc_set_norm_float)).
+
+Another way to deal with this problem is to consider 16 bit short data as a
+final destination format only, not as an intermediate storage format. All
+intermediate data (ie which is going to be processed further) should be stored
+in floating point format which is supported by all of the most common file
+formats. If floating point files are considered too large (2 times the size of a
+16 bit PCM file), it would also be possible to use 24 bit PCM as an intermediate
+storage format (and which is also supported by most common file types).
+
+## Q11 : I'm having problems with u-law encoded WAV files generated by libsndfile in Winamp. Why? {#Q011}
+
+This is actually a Winamp problem. The official Microsoft spec suggests that the
+'fmt ' chunk should be 18 bytes. Unfortunately at least one of Microsoft's own
+applications (Sound Recorder on Win98 I believe) did not accept 18 bytes 'fmt '
+chunks.
+
+Michael Lee did some experimenting and found that:
+
+> I have checked that Windows Media Player 9, QuickTime Player 6.4, RealOne
+> Player 2.0 and GoldWave 5.06 can all play u-law files with 16-byte or 18-byte
+> 'fmt ' chunk. Only Winamp (2.91) and foobar2000 are unable to play u-law files
+> with 16-byte 'fmt ' chunk.
+
+Even this is a very small sampling of all the players out there. For that reason
+it is probably not a good idea to change this now because there is the risk of
+breaking something that currently works.
+
+## Q12 : I'm looking at sf_read*. What are items? What are frames? {#Q012}
+
+An `item` is a single sample of the data type you are reading; ie a single
+`short` value for `sf_read_short` or a single `float` for `sf_read_float`.
+
+For a sound file with only one channel, a frame is the same as a item (ie a
+single sample) while for multi channel sound files, a single frame contains a
+single item for each channel.
+
+Here are two simple, correct examples, both of which are assumed to be working
+on a stereo file, first using items:
+
+```c
+#define CHANNELS 2
+short data [CHANNELS * 100] ;
+sf_count items_read = sf_read_short (file, data, 200) ;
+assert (items_read == 200) ;
+```
+
+and now reading the exact same amount of data using frames:
+
+```c
+#define CHANNELS 2
+short data [CHANNELS * 100] ;
+sf_count frames_read = sf_readf_short (file, data, 100) ;
+assert (frames_read == 100) ;
+```
+
+## Q13 : Why can't libsndfile open this Sound Designer II (SD2) file? {#Q013}
+
+This is somewhat complicated. First some background.
+
+SD2 files are native to the Apple Macintosh platform and use features of the Mac
+filesystem (file resource forks) to store the file's sample rate, number of
+channels, sample width and more. When you look at a file and its resource fork
+on Mac OS X it looks like this:
+
+    -rw-r--r--  1 erikd erikd   46512 Oct 18 22:57 file.sd2
+    -rw-r--r--  1 erikd erikd     538 Oct 18 22:57 file.sd2/rsrc
+
+Notice how the file itself looks like a directory containing a single file named
+**rsrc**. When libsndfile is compiled for MacOS X, it should open (for write and
+read) SD2 file with resource forks like this without any problems. It will also
+handle files with the resource fork in a separate file as described below.
+
+When SD2 files are moved to other platforms, the resource fork of the file can
+sometimes be dropped altogether. All that remains is the raw audio data and no
+information about the number of channels, sample rate or bit width which makes
+it a little difficult for libsndfile to open the file.
+
+However, it is possible to safely move an SD2 file to a Linux or Windows
+machine. For instance, when an SD2 file is copied from inside MacOS X to a
+windows shared directory or a Samba share (ie Linux), MacOS X is clever enough
+to store the resource fork of the file in a separate hidden file in the same
+directory like this:
+
+    -rw-r--r--  1 erikd erikd     538 Oct 18 22:57 ._file.sd2
+    -rw-r--r--  1 erikd erikd   46512 Oct 18 22:57 file.sd2
+
+Regardless of what platform it is running on, when libsndfile is asked to open a
+file named **"foo"** and it can't recognize the file type from the data in the
+file, it will attempt to open the resource fork and if that fails, it then tries
+to open a file named **"._foo"** to see if the file has a valid resource fork.
+This is the same regardless of whether the file is being opened for read or
+write.
+
+In short, libsndfile should open SD2 files with a valid resource fork on all of
+the platforms that libsndfile supports. If a file has lost its resource fork,
+the only option is the open the file using the SF_FORMAT_RAW option and guessing
+its sample rate, channel count and bit width.
+
+Occasionally, when SD2 files are moved to other systems, the file is
+[BinHexed](http://www.macdisk.com/binhexen.php3) which wraps the resource fork
+and the data fork together. For these files, it would be possible to write a
+BinHex parser but there is not a lot to gain considering how rare these BinHexed
+SD2 files are.
+
+## Q14 : I'd like to statically link libsndfile to my closed source application. Can I buy a license so that this is possible? {#Q014}
+
+Unfortunately no. libsndfile contains code written by other people who have
+agreed that their code be used under the GNU LGPL but no more. Even if they were
+to agree, there would be significant difficulties in dividing up the payments
+fairly.
+
+The **only** way you can legally use libsndfile as a statically linked library
+is if your application is released under the GNU GPL or LGPL.
+
+## Q15 : My program is crashing during a call to a function in libsndfile. Is this a bug in libsndfile? {#Q015}
+
+libsndfile is being used by large numbers of people all over the world without
+any problems like this. That means that it is much more likely that your code
+has a bug than libsndfile. However, it is still possible that there is a bug in
+libsndfile.
+
+To figure out whether it is your code or libsndfile you should do the following:
+
+- Make sure you are compiling your code with warnings switched on and that you
+  fix as many warnings as possible. With the GNU compiler (gcc) I would
+  recommend at least **-W -Wall -Werror** which will force you to fix all
+  warnings before you can run the code.
+- Try using a memory debugger. [Valgrind](http://valgrind.kde.org/) on x86 Linux
+  is excellent. [Purify](http://www.ibm.com/software/awdtools/purify/) also has
+  a good reputation.
+- If the code is clean after the above two steps and you still get a crash in
+  libsndfile, then send me a small snippet of code (no more than 30-40 lines)
+  which includes the call to sf_open() and also shows how all variables passed
+  to/returned from sf_open() are defined.
+
+## Q16 : Will you accept a fix for compiling libsndfile with compiler X? {#Q016}
+
+If compiler X is a C++ compiler then no. C and C++ are different enough to make
+writing code that compiles as valid C and valid C++ too difficult. I would
+rather spend my time fixing bugs and adding features.
+
+If compiler X is a C compiler then I will do what I can as long as that does not
+hamper the correctness, portability and maintainability of the existing code. It
+should be noted however that libsndfile uses features specified by the 1999 ISO
+C Standard. This can make compiling libsndfile with some older compilers
+difficult.
+
+## Q17 : Can libsndfile read/write files from/to UNIX pipes? {#Q017}
+
+Yes, libsndfile can read files from pipes. Unfortunately, the write case is much
+more complicated.
+
+File formats like AIFF and WAV have information at the start of the file (the
+file header) which states the length of the file, the number of sample frames
+etc. This information must be filled in correctly when the file header is
+written, but this information is not reliably known until the file is closed.
+This means that libsndfile cannot write AIFF, WAV and many other file types to a
+pipe.
+
+However, there is at least one file format (AU) which is specifically designed
+to be written to a pipe. Like AIFF and WAV, AU has a header with a sample frames
+field, but it is specifically allowable to set that frames field to 0x7FFFFFFF
+if the file length is not known when the header is written. The AU file format
+can also hold data in many of the standard formats (ie SF_FORMAT_PCM_16,
+SF_FORMAT_PCM_24, SF_FORMAT_FLOAT etc) as well as allowing data in both big and
+little endian format.
+
+See also [FAQ Q6](#Q006).
+
+## Q18 : Is it possible to build a Universal Binary on Mac OS X? {#Q018}
+
+Yes, but you must do two separate configure/build/test runs; one on PowerPC and
+one on Intel. It is then possible to merge the binaries into a single universal
+binary using one of the programs in the Apple tool chain.
+
+It is **not** possible to build a working universal binary via a single
+compile/build run on a single CPU.
+
+The problem is that the libsndfile build process detects features of the CPU its
+being built for during the configure process and when building a universal
+binary, configure is only run once and that data is then used for both CPUs.
+That configure data will be wrong for one of those CPUs. You will still be able
+to compile libsndfile, and the test suite will pass on the machine you compiled
+it on. However, if you take the universal binary test suite programs compiled on
+one CPU and run them on the other, the test suite will fail.
+
+Part of the problem is that the CPU endian-ness is detected at configure time.
+Yes, I know the Apple compiler defines one of the macros \_\_LITTLE\_ENDIAN\_\_
+and \_\_BIG\_ENDIAN\_\_, but those macros are not part of the 1999 ISO C
+Standard and they are not portable.
+
+Endian issues are not the only reason why the cross compiled binary will fail.
+The configure script also detects other CPU specific idiosyncrasies to provide
+more optimized code.
+
+Finally, the real show stopper problem with universal binaries is the problem
+with the test suite. libsndfile contains a huge, comprehensive test suite. When
+you compile a universal binary and run the test suite, you only test the native
+compile. The cross compiled binary (the one with the much higher chance of
+having problems) cannot be tested.
+
+Now, if you have read this far you're probably thinking there must be a way to
+fix this and there probably is. The problem is that its a hell of a lot of work
+and would require significant changes to the configure process, the internal
+code and the test suite. In addition, these changes must not break compilation
+on any of the platforms libsndfile is currently working on.
+
+## Q19 : I have project files for Visual Studio / XCode / Whatever. Why don't you distribute them with libsndfile? {#Q019}
+
+Use CMake project.
+
+## Q20 : Why doesn't libsndfile support MP3? {#Q020}
+
+~~In the past, MP3 was not supported because the technology behind MP3 was
+patented. Those patents have now expired and there is an
+[open ticket](https://github.com/libsndfile/libsndfile/issues/258) to implement
+MP3 support.~~
+
+**Update :** Starting from version 1.1.0 libsndfile supports MP3 format.
+
+## Q21 : How do I use libsndfile in a closed source or commercial program and comply with the license? {#Q021}
+
+Here is a checklist of things you need to do to make sure your use of libsndfile
+in a closed source or commercial project complies with the license libsndfile is
+released under, the GNU Lesser General Public License (LGPL):
+
+- Make sure you are linking to libsndfile as a shared library (Linux and Unix
+  systems), Dynamic Link Library (Microsoft Windows) or dynlib (Mac OS X). If
+  you are using some other operating system that doesn't allow dynamically
+  linked libraries, you will not be able to use libsndfile unless you release
+  the source code to your program.
+- In the licensing documentation for your program, add a statement that your
+  software depends on libsndfile and that libsndfile is released under the GNU
+  Lesser General Public License, either
+  [version 2.1](http://www.gnu.org/licenses/lgpl-2.1.txt) or optionally
+  [version 3](http://www.gnu.org/licenses/lgpl.txt).
+- Include the text for both versions of the license, possibly as separate files
+  named libsndfile_lgpl_v2_1.txt and libsndfile_lgpl_v3.txt.
+
+## Q22 : What versions of Windows does libsndfile work on? {#Q022}
+
+New versions of libsndfile binary releases require Wiindows Vista. If you need
+Windows XP support, you can build DLL from sources, we don't use specific WinXP
+features.
+
+## Q23 : I'm cross compiling libsndfile for another platform. How can I run the test suite? {#Q023}
+
+Since version 1.0.21 the top level Makefile has an extra make target,
+'test-tarball'. Building this target creates a tarball called called:
+
+    ` libsndfile-testsuite-${host_triplet}-${version}.tar.gz`
+
+in the top level directory. This tarball can then be copied to the target
+platform. Once untarred and test script `test_wrapper.sh` can be run from the
+top level of the extracted tarball.

extern/libsndfile-modified/docs/_config.yml

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+---
+author: "The libsndfile team"
+version: "1.2.2"
+
+markdown: kramdown
+plugins:
+  - jekyll-default-layout
+---

extern/libsndfile-modified/docs/_includes/logo.html

@@ -0,0 +1 @@
+<img src="libsndfile.jpg" class="image-logo" height=98 width=367 alt="Logo">

extern/libsndfile-modified/docs/_layouts/default.html

@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>{{ page.title }}</title>
+  <link rel="stylesheet" href="libsndfile.css" type="text/css" media="all">
+  <link rel="stylesheet" href="print.css" type="text/css" media="print">
+</head>
+  <body>
+    {{ content }}
+    <footer>
+      <hr>
+      <p>The libsndfile home page is <a href="http://libsndfile.github.io/libsndfile/">here</a>.</p>
+      <p>The libsndfile version: {{ site.version }}.</p>
+    </footer>
+  </body>
+</html>

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+---
+layout: default
+keywords: WAV AIFF AU SVX PAF NIST W64 libsndfile sound audio dsp Linux
+robots: nofollow
+title: libsndfile home page
+---
+
+<footer>
+  {% include logo.html %}
+
+  <nav>
+    <a href="#history">History</a> -+-
+    <a href="#features">Features</a> -+-
+    <a href="#similar-or-related-projects">Similar or related projects</a> -+-
+    <a href="https://github.com/libsndfile/libsndfile/blob/master/CHANGELOG.md">News</a>
+    <br>
+    <a href="development.html">Development</a> -+-
+    <a href="api.html">Programming interface</a> -+-
+    <a href="bugs.html">Bug reporting</a> -+-
+    <a href="#download">Download</a>
+    <br>
+    <a href="FAQ.html">FAQ</a> -+-
+    <a href="lists.html">Mailing lists</a> -+-
+    <a href="#licensing">Licensing information</a> -+-
+    <a href="#see-also">See also</a>
+  </nav>
+  <br><br>
+</footer>
+
+<main>
+  <article>
+    {{ content }}
+  </article>
+</main>

extern/libsndfile-modified/docs/_layouts/page.html

@@ -0,0 +1,10 @@
+---
+layout: default
+---
+
+
+<main>
+  <article>
+    {{ content }}
+  </article>
+</main>

extern/libsndfile-modified/docs/api.md

@@ -0,0 +1,744 @@
+---
+layout: page
+title: The libsndfile API
+---
+
+# libsndfile
+
+Libsndfile is a library designed to allow the reading and writing of many different sampled sound file formats (such as
+MS Windows WAV and the Apple/SGI AIFF format) through one standard library interface.
+
+During read and write operations, formats are seamlessly converted between the format the application program has
+requested or supplied and the file's data format. The application programmer can remain blissfully unaware of issues
+such as file endian-ness and data format. See [Note 1](#note-1) and [Note 2](#note-2).
+
+Every effort is made to keep these documents up-to-date, error free and unambiguous. However, since maintaining the
+documentation is the least fun part of working on libsndfile, these docs can and do fall behind the behaviour of the
+library. If any errors, omissions or ambiguities are found, please notify me (erikd) at mega-nerd dot com.
+
+To supplement this reference documentation, there are simple example programs included in the source code tarball. The
+test suite which is also part of the source code tarball is also a good place to look for the correct usage of the
+library functions.
+
+**Finally, if you think there is some feature missing from libsndfile, check that it isn't already implemented (and
+documented) [here](command.md).**
+
+## Synopsis
+
+```c
+#include <stdio.h>;
+#include <sndfile.h>;
+```
+
+| Name                                                                                                        | Description                                    |
+|:------------------------------------------------------------------------------------------------------------|:---------------------------------------        |
+| [sf_open, sf_wchar_open](#open)                                                                             | File open functions.                           |
+| [sf_open_fd](#open_fd)                                                                                      | Open sound file using file descriptor.         |
+| [sf_open_virtual](#open_virtual)                                                                            | Open sound file using virtual API.             |
+| [sf_format_check](#check)                                                                                   | Validate sound file info.                      |
+| [sf_seek](#seek)                                                                                            | Seek position in sound file.                   |
+| [sf_command](command.md)                                                                                    | Command interface.                             |
+| [sf_error, sf_strerror, sf_error_number, sf_perror, sf_error_str](#error)                                   | Error functions.                               |
+| [sf_close](#close)                                                                                          | File close function.                           |
+| [sf_write_sync](#write_sync)                                                                                | Write sync function.                           |
+| [sf_read_short, sf_read_int, sf_read_float, sf_read_double](#read)                                          | File items read functions.                     |
+| [sf_readf_short, sf_readf_int, sf_readf_float, sf_readf_double](#readf)                                     | File frames read functions.                    |
+| [sf_write_short, sf_write_int, sf_write_float, sf_write_double](#write)                                     | File items write functions.                    |
+| [sf_writef_short, sf_writef_int, sf_writef_float, sf_writef_double](#writef)                                | File frames write functions.                   |
+| [sf_read_raw, sf_write_raw](#raw)                                                                           | Raw read/write functions.                      |
+| [sf_get_string, sf_set_string](#string)                                                                     | Functions for reading and writing string data. |
+| [sf_version_string](#version_string)                                                                        | Retrieve library version string.                |
+| [sf_current_byterate](#current_byterate)                                                                    | Retrieve current byterate.                     |
+| [sf_set_chunk, sf_get_chunk_iterator, sf_next_chunk_iterator, sf_get_chunk_size, sf_get_chunk_data](#chunk) | RIFF chunks API.                               |
+
+SNDFILE* is an anonymous pointer to data which is private to the library.
+
+## File Open Function {#open}
+
+```c
+SNDFILE*  sf_open    (const char *path, int mode, SF_INFO *sfinfo) ;
+```
+
+The sf_open() function opens the sound file at the specified path. The filename is byte encoded, but may be utf-8 on
+Linux, while on Mac OS X it will use the filesystem character set. On Windows, there is also a Windows specific
+sf_wchar_open() that takes a UTF16_BE encoded filename.
+
+```c
+SNDFILE*  sf_wchar_open (LPCWSTR wpath, int mode, SF_INFO *sfinfo) ;
+```
+
+The SF_INFO structure is for passing data between the calling function and the library when opening a file for reading
+or writing. It is defined in sndfile.h as follows:
+
+```c
+typedef struct
+{    sf_count_t  frames ;     /* Used to be called samples. */
+        int         samplerate ;
+        int         channels ;
+        int         format ;
+        int         sections ;
+        int         seekable ;
+    } SF_INFO ;
+```
+
+The mode parameter for this function can be any one of the following three values:
+
+SFM_READ
+: read only mode
+
+SFM_WRITE
+: write only mode
+
+SFM_RDWR
+: read/write mode
+
+When opening a file for read, the **format** field should be set to zero before
+calling **sf_open**(). The only exception to this is the case of RAW files where
+the caller has to set the **samplerate**, **channels** and **format** fields to
+valid values. All other fields of the structure are filled in by the library.
+
+**Note:** The libsndfile library will reject values ​​for field **channels** that
+are greater than `1024`. These value ​​represent the maximum theoretical limit
+and may be less for specific formats.
+
+When opening a file for write, the caller must fill in structure members
+**samplerate**, **channels**, and **format**.
+
+The **format** field in the above **SF_INFO** structure is made up of the
+bit-wise OR of a major format type (values between 0x10000 and 0x08000000), a
+minor format type (with values less than 0x10000) and an optional endian-ness
+value. The currently understood formats are listed in *sndfile.h* as follows and
+also include bitmasks for separating major and minor file types. Not all
+combinations of endian-ness and major and minor file types are valid.
+
+| Name                     | Value      | Description                                |
+|:-------------------------|:-----------|:-------------------------------------------|
+| **Major formats.**                                                                 |
+| SF_FORMAT_WAV            | 0x010000   | Microsoft WAV format (little endian).      |
+| SF_FORMAT_AIFF           | 0x020000   | Apple/SGI AIFF format (big endian).        |
+| SF_FORMAT_AU             | 0x030000   | Sun/NeXT AU format (big endian).           |
+| SF_FORMAT_RAW            | 0x040000   | RAW PCM data.                              |
+| SF_FORMAT_PAF            | 0x050000   | Ensoniq PARIS file format.                 |
+| SF_FORMAT_SVX            | 0x060000   | Amiga IFF / SVX8 / SV16 format.            |
+| SF_FORMAT_NIST           | 0x070000   | Sphere NIST format.                        |
+| SF_FORMAT_VOC            | 0x080000   | VOC files.                                 |
+| SF_FORMAT_IRCAM          | 0x0A0000   | Berkeley/IRCAM/CARL                        |
+| SF_FORMAT_W64            | 0x0B0000   | Sonic Foundry's 64 bit RIFF/WAV            |
+| SF_FORMAT_MAT4           | 0x0C0000   | Matlab (tm) V4.2 / GNU Octave 2.0          |
+| SF_FORMAT_MAT5           | 0x0D0000   | Matlab (tm) V5.0 / GNU Octave 2.1          |
+| SF_FORMAT_PVF            | 0x0E0000   | Portable Voice Format                      |
+| SF_FORMAT_XI             | 0x0F0000   | Fasttracker 2 Extended Instrument          |
+| SF_FORMAT_HTK            | 0x100000   | HMM Tool Kit format                        |
+| SF_FORMAT_SDS            | 0x110000   | Midi Sample Dump Standard                  |
+| SF_FORMAT_AVR            | 0x120000   | Audio Visual Research                      |
+| SF_FORMAT_WAVEX          | 0x130000   | MS WAVE with WAVEFORMATEX                  |
+| SF_FORMAT_SD2            | 0x160000   | Sound Designer 2                           |
+| SF_FORMAT_FLAC           | 0x170000   | FLAC lossless file format                  |
+| SF_FORMAT_CAF            | 0x180000   | Core Audio File format                     |
+| SF_FORMAT_WVE            | 0x190000   | Psion WVE format                           |
+| SF_FORMAT_OGG            | 0x200000   | Xiph OGG container                         |
+| SF_FORMAT_MPC2K          | 0x210000   | Akai MPC 2000 sampler                      |
+| SF_FORMAT_RF64           | 0x220000   | RF64 WAV file                              |
+| SF_FORMAT_MPEG           | 0x230000   | MPEG-1/2 audio stream                      |
+| **Subtypes.**                                                                      |
+| SF_FORMAT_PCM_S8         | 0x0001     | Signed 8 bit data                          |
+| SF_FORMAT_PCM_16         | 0x0002     | Signed 16 bit data                         |
+| SF_FORMAT_PCM_24         | 0x0003     | Signed 24 bit data                         |
+| SF_FORMAT_PCM_32         | 0x0004     | Signed 32 bit data                         |
+| SF_FORMAT_PCM_U8         | 0x0005     | Unsigned 8 bit data (WAV and RAW only)     |
+| SF_FORMAT_FLOAT          | 0x0006     | 32 bit float data                          |
+| SF_FORMAT_DOUBLE         | 0x0007     | 64 bit float data                          |
+| SF_FORMAT_ULAW           | 0x0010     | U-Law encoded.                             |
+| SF_FORMAT_ALAW           | 0x0011     | A-Law encoded.                             |
+| SF_FORMAT_IMA_ADPCM      | 0x0012     | IMA ADPCM.                                 |
+| SF_FORMAT_MS_ADPCM       | 0x0013     | Microsoft ADPCM.                           |
+| SF_FORMAT_GSM610         | 0x0020     | GSM 6.10 encoding.                         |
+| SF_FORMAT_VOX_ADPCM      | 0x0021     | OKI / Dialogix ADPCM                       |
+| SF_FORMAT_NMS_ADPCM_16   | 0x0022     | 16kbs NMS G721-variant encoding.           |
+| SF_FORMAT_NMS_ADPCM_24   | 0x0023     | 24kbs NMS G721-variant encoding.           |
+| SF_FORMAT_NMS_ADPCM_32   | 0x0024     | 32kbs NMS G721-variant encoding.           |
+| SF_FORMAT_G721_32        | 0x0030     | 32kbs G721 ADPCM encoding.                 |
+| SF_FORMAT_G723_24        | 0x0031     | 24kbs G723 ADPCM encoding.                 |
+| SF_FORMAT_G723_40        | 0x0032     | 40kbs G723 ADPCM encoding.                 |
+| SF_FORMAT_DWVW_12        | 0x0040     | 12 bit Delta Width Variable Word encoding. |
+| SF_FORMAT_DWVW_16        | 0x0041     | 16 bit Delta Width Variable Word encoding. |
+| SF_FORMAT_DWVW_24        | 0x0042     | 24 bit Delta Width Variable Word encoding. |
+| SF_FORMAT_DWVW_N         | 0x0043     | N bit Delta Width Variable Word encoding.  |
+| SF_FORMAT_DPCM_8         | 0x0050     | 8 bit differential PCM (XI only)           |
+| SF_FORMAT_DPCM_16        | 0x0051     | 16 bit differential PCM (XI only)          |
+| SF_FORMAT_VORBIS         | 0x0060     | Xiph Vorbis encoding.                      |
+| SF_FORMAT_OPUS           | 0x0064     | Xiph/Skype Opus encoding.                  |
+| SF_FORMAT_ALAC_16        | 0x0070     | Apple Lossless Audio Codec (16 bit).       |
+| SF_FORMAT_ALAC_20        | 0x0071     | Apple Lossless Audio Codec (20 bit).       |
+| SF_FORMAT_ALAC_24        | 0x0072     | Apple Lossless Audio Codec (24 bit).       |
+| SF_FORMAT_ALAC_32        | 0x0073     | Apple Lossless Audio Codec (32 bit).       |
+| SF_FORMAT_MPEG_LAYER_I   | 0x0080     | MPEG-1 Audio Layer I.                      |
+| SF_FORMAT_MPEG_LAYER_II  | 0x0081     | MPEG-1 Audio Layer II.                     |
+| SF_FORMAT_MPEG_LAYER_III | 0x0082     | MPEG-2 Audio Layer III.                    |
+| **Endian-ness options.**                                                           |
+| SF_ENDIAN_FILE           | 0x00000000 | Default file endian-ness.                  |
+| SF_ENDIAN_LITTLE         | 0x10000000 | Force little endian-ness.                  |
+| SF_ENDIAN_BIG            | 0x20000000 | Force big endian-ness.                     |
+| SF_ENDIAN_CPU            | 0x30000000 | Force CPU endian-ness.                     |
+| SF_FORMAT_SUBMASK        | 0x0000FFFF |                                            |
+| SF_FORMAT_TYPEMASK       | 0x0FFF0000 |                                            |
+| SF_FORMAT_ENDMASK        | 0x30000000 |                                            |
+
+Every call to **sf_open**() should be matched with a call to
+[**sf_close**()](#close) to free up memory allocated during the call to **sf_open**().
+
+On success, the sf_open function returns a non-NULL pointer which should be passed as the first parameter to all
+subsequent libsndfile calls dealing with that audio file. On fail, the sf_open function returns a NULL pointer. An
+explanation of the error can obtained by passing NULL to [**sf_strerror**()](#error).
+
+### File Descriptor Open {#open_fd}
+
+```c
+SNDFILE*  sf_open_fd (int fd, int mode, SF_INFO *sfinfo, int close_desc) ;
+```
+
+**Note:** On Microsoft Windows, this function does not work if the application
+and the libsndfile DLL are linked to different versions of the Microsoft C
+runtime DLL.
+
+The second open function takes a file descriptor of a file that has already been
+opened. Care should be taken to ensure that the mode of the file represented by
+the descriptor matches the mode argument. This function is useful in the
+following circumstances:
+
+* Opening temporary files securely (ie use the **tmpfile**() to return a FILE*
+  pointer and then using fileno() to retrieve the file descriptor which is then
+  passed to libsndfile).
+* Opening files with file names using OS specific character encodings and then
+  passing the file descriptor to **sf_open_fd**().
+* Opening sound files embedded within larger files. [More info](embedded_files.md).
+
+Every call to `sf_open_fd`() should be matched with a call to sf_close() to free
+up memory allocated during the call to sf_open_fd().
+
+When sf_close() is called, the file descriptor is only closed if the
+**close_desc** parameter was TRUE when the sf_open_fd() function was called.
+
+On success, the sf_open_fd() function returns a non-NULL pointer which should be
+passed as the first parameter to all subsequent libsndfile calls dealing with
+that audio file. On fail, the sf_open_fd() function returns a NULL pointer.
+
+### Virtual File Open Function {#open_virtual}
+
+```c
+SNDFILE*    sf_open_virtual (SF_VIRTUAL_IO *sfvirtual, int mode, SF_INFO *sfinfo, void *user_data) ;
+```
+
+Opens a soundfile from a virtual file I/O context which is provided by the
+caller. This is usually used to interface libsndfile to write/read from memory
+with a stream or buffer based system. Apart from the sfvirtual and the user_data
+parameters this function behaves like [sf_open()](#open).
+
+```c
+    typedef struct
+    {    sf_vio_get_filelen  get_filelen ;
+          sf_vio_seek         seek ;
+          sf_vio_read         read ;
+          sf_vio_write        write ;
+          sf_vio_tell         tell ;
+    } SF_VIRTUAL_IO ;
+```
+
+Libsndfile calls the callbacks provided by the SF_VIRTUAL_IO structure when
+opening, reading and writing to the virtual file context. The user_data pointer
+is a user defined context which will be available in the callbacks.
+
+```c
+typedef sf_count_t  (*sf_vio_get_filelen) (void *user_data) ;
+typedef sf_count_t  (*sf_vio_seek)        (sf_count_t offset, int whence, void *user_data) ;
+typedef sf_count_t  (*sf_vio_read)        (void *ptr, sf_count_t count, void *user_data) ;
+typedef sf_count_t  (*sf_vio_write)       (const void *ptr, sf_count_t count, void *user_data) ;
+typedef sf_count_t  (*sf_vio_tell)        (void *user_data) ;
+```
+
+#### sf_vio_get_filelen
+
+```c
+typedef sf_count_t  (*sf_vio_get_filelen) (void *user_data) ;
+```
+
+The virtual file context must return the length of the virtual file in bytes.
+
+#### sf_vio_seek
+
+```c
+typedef sf_count_t  (*sf_vio_seek)        (sf_count_t offset, int whence, void *user_data) ;
+```
+
+The virtual file context must seek to offset using the seek mode provided by
+whence which is one of SEEK_CUR, SEEK_SET, SEEK_END.
+
+The return value must contain the new offset in the file.
+
+#### sf_vio_read
+
+```c
+typedef sf_count_t  (*sf_vio_read)        (void *ptr, sf_count_t count, void *user_data) ;
+```
+
+The virtual file context must copy ("read") "count" bytes into the buffer
+provided by ptr and return the count of actually copied bytes.
+
+#### sf_vio_write
+
+```c
+typedef sf_count_t  (*sf_vio_write)       (const void *ptr, sf_count_t count, void *user_data) ;
+```
+
+The virtual file context must process "count" bytes stored in the buffer passed
+with ptr and return the count of actually processed bytes.
+
+#### sf_vio_tell
+
+```c
+typedef sf_count_t  (*sf_vio_tell)        (void *user_data) ;
+```
+
+Return the current position of the virtual file context.
+
+## Format Check Function {#chek}
+
+```c
+int  sf_format_check (const SF_INFO *info) ;
+```
+
+This function allows the caller to check if a set of parameters in the SF_INFO
+struct is valid before calling [sf_open](#open) (SFM_WRITE).
+
+sf_format_check() returns TRUE if the parameters are valid and FALSE otherwise.
+
+## File Seek Functions
+
+```c
+sf_count_t  sf_seek  (SNDFILE *sndfile, sf_count_t frames, int whence) ;
+```
+
+The file seek functions work much like lseek in unistd.h with the exception that
+the non-audio data is ignored and the seek only moves within the audio data
+section of the file. In addition, seeks are defined in number of (multichannel)
+frames. Therefore, a seek in a stereo file from the current position forward
+with an offset of 1 would skip forward by one sample of both channels.
+
+like lseek(), the whence parameter can be any one of the following three values:
+
+SEEK_SET
+: The offset is set to the start of the audio data plus offset (multichannel)
+frames.
+
+SEEK_CUR
+: The offset is set to its current location plus offset (multichannel) frames.
+
+SEEK_END
+: The offset is set to the end of the data plus offset (multichannel) frames.
+
+Internally, libsndfile keeps track of the read and write locations using
+separate read and write pointers. If a file has been opened with a mode of
+SFM_RDWR, bitwise OR-ing the standard whence values above with either SFM_READ
+or SFM_WRITE allows the read and write pointers to be modified separately.
+If the SEEK_* values are used on their own, the read and write pointers are
+both modified.
+
+Note that the frames offset can be negative and in fact should be when SEEK_END
+is used for the whence parameter.
+
+sf_seek will return the offset in (multichannel) frames from the start of the
+audio data or -1 if an error occurred (ie an attempt is made to seek beyond the
+start or end of the file).
+
+## Error Reporting Functions {#error}
+
+```c
+int sf_error (SNDFILE *sndfile) ;
+```
+
+This function returns the current error number for the given SNDFILE.
+
+The error number may be one of the following:
+
+| Name                        | Value |
+|:----------------------------|:------|
+| SF_ERR_NO_ERROR             | 0     |
+| SF_ERR_UNRECOGNISED_FORMAT  | 1     |
+| SF_ERR_SYSTEM               | 2     |
+| SF_ERR_MALFORMED_FILE       | 3     |
+| SF_ERR_UNSUPPORTED_ENCODING | 4     |
+
+or any one of many other internal error values.
+Applications should only test the return value against error values defined in
+\<sndfile.h\>; as the internal error values are subject to change at any time.
+For errors not in the above list, the function sf_error_number() can be used to
+convert it to an error string.
+
+```c
+const char* sf_strerror     (SNDFILE *sndfile) ;
+const char* sf_error_number (int errnum) ;
+```
+
+The error functions sf_strerror () and sf_error_number () convert the library's
+internal error enumerations into text strings.
+
+```c
+int sf_perror    (SNDFILE *sndfile) ;
+int sf_error_str (SNDFILE *sndfile, char* str, size_t len) ;
+```
+
+The functions sf_perror() and sf_error_str() are deprecated and will be dropped
+from the library at some later date.
+
+## File Close Function {#close}
+
+```c
+int sf_close (SNDFILE *sndfile) ;
+```
+
+The close function closes the file, deallocates its internal buffers and returns
+0 on success or an error value otherwise.
+
+## Write Sync Function {#write_sync}
+
+```c
+void  sf_write_sync  (SNDFILE *sndfile) ;
+```
+
+If the file is opened SFM_WRITE or SFM_RDWR, call the operating system's
+function to force the writing of all file cache buffers to disk. If the file is
+opened SFM_READ no action is taken.
+
+## File Read Functions {#read}
+
+```c
+sf_count_t sf_read_short  (SNDFILE *sndfile, short *ptr, sf_count_t items) ;
+sf_count_t sf_read_int    (SNDFILE *sndfile, int *ptr, sf_count_t items) ;
+sf_count_t sf_read_float  (SNDFILE *sndfile, float *ptr, sf_count_t items) ;
+sf_count_t sf_read_double (SNDFILE *sndfile, double *ptr, sf_count_t items) ;
+```
+
+{: #readf}
+```c
+sf_count_t sf_readf_short  (SNDFILE *sndfile, short *ptr, sf_count_t frames) ;
+sf_count_t sf_readf_int    (SNDFILE *sndfile, int *ptr, sf_count_t frames) ;
+sf_count_t sf_readf_float  (SNDFILE *sndfile, float *ptr, sf_count_t frames) ;
+sf_count_t sf_readf_double (SNDFILE *sndfile, double *ptr, sf_count_t frames) ;
+```
+
+The file read functions fill the array pointed to by ptr with the requested
+number of items or frames.
+
+For the frames-count functions, the frames parameter specifies the number of
+frames. A frame is just a block of samples, one for each channel.
+
+**Care must be taken to ensure that there is enough space in the array pointed
+to by ptr, to take (frames \* channels) number of items (shorts, ints, floats or
+doubles).**
+
+For the items-count functions, the items parameter must be an integer product
+of the number of channels or an error will occur. Here, an item is just a
+sample.
+
+Note: The only difference between the "items" and "frames" versions of each read
+function is the units in which the object count is specified - calling
+sf_readf_short() with a count argument of N, on a SNDFILE with C channels, is
+the same as calling sf_read_short with a count argument of N\*C. The buffer
+pointed to by "ptr" should be the same number of bytes in each case.
+
+Note: The data type used by the calling program and the data format of the file
+do not need to be the same. For instance, it is possible to open a 16 bit PCM
+encoded WAV file and read the data using sf_read_float(). The library seamlessly
+converts between the two formats on-the-fly. See [Note 1](#note-1).
+
+The sf_read_XXXX and sf_readf_XXXX functions return the number of items or
+frames read, respectively. Unless the end of the file was reached during the
+read, the return value should equal the number of objects requested. Attempts to
+read beyond the end of the file will not result in an error but will cause the
+read functions to return less than the number of objects requested or 0 if
+already at the end of the file. When the buffer is not is not completely filled,
+unused buffer space is filled by zeroes.
+
+## File Write Functions {#write}
+
+```c
+sf_count_t sf_write_short  (SNDFILE *sndfile, short *ptr, sf_count_t items) ;
+sf_count_t sf_write_int    (SNDFILE *sndfile, int *ptr, sf_count_t items) ;
+sf_count_t sf_write_float  (SNDFILE *sndfile, float *ptr, sf_count_t items) ;
+sf_count_t sf_write_double (SNDFILE *sndfile, double *ptr, sf_count_t items) ;
+```
+
+{: #writef}
+```c
+sf_count_t sf_writef_short  (SNDFILE *sndfile, short *ptr, sf_count_t frames) ;
+sf_count_t sf_writef_int    (SNDFILE *sndfile, int *ptr, sf_count_t frames) ;
+sf_count_t sf_writef_float  (SNDFILE *sndfile, float *ptr, sf_count_t frames) ;
+sf_count_t sf_writef_double (SNDFILE *sndfile, double *ptr, sf_count_t frames) ;
+```
+
+The file write functions write the data in the array pointed to by ptr to the
+file.
+
+For items-count functions, the items parameter specifies the size of the array
+and must be an integer product of the number of channels or an error will occur.
+
+For the frames-count functions, the array is expected to be large enough to hold
+a number of items equal to the product of frames and the number of channels.
+
+As with the read functions [above](#read), the only difference in the items and
+frames version of each write function is the units in which the buffer size is
+specified. Again, the data type used by the calling program and the data format
+of the file do not need to be the same ([Note 1](#note-1)).
+
+The sf_write_XXXX and sf_writef_XXXX functions respectively return the number of
+items or frames written (which should be the same as the items or frames
+parameter).
+
+## Raw File Read and Write Functions {#raw}
+
+```c
+sf_count_t sf_read_raw  (SNDFILE *sndfile, void *ptr, sf_count_t bytes) ;
+sf_count_t sf_write_raw (SNDFILE *sndfile, void *ptr, sf_count_t bytes) ;
+```
+
+**Note:** Unless you are writing an external decoder/encode that uses libsndfile
+to handle the file headers, you should not be using these functions.
+
+The raw read and write functions read raw audio data from the audio file (not to
+be confused with reading RAW header-less PCM files). The number of bytes read or
+written must always be an integer multiple of the number of channels multiplied
+by the number of bytes required to represent one sample from one channel.
+
+The raw read and write functions return the number of bytes read or written
+(which should be the same as the bytes parameter).
+
+**Note : The result of using of both regular reads/writes and raw reads/writes
+on compressed file formats other than SF_FORMAT_ALAW and SF_FORMAT_ULAW is
+undefined.**
+
+See also : [SFC_RAW_NEEDS_ENDSWAP](command.md#sfc_raw_needs_endswap).
+
+## Functions for Reading and Writing String Data {#string}
+
+```c
+const char* sf_get_string (SNDFILE *sndfile, int str_type) ;
+int         sf_set_string (SNDFILE *sndfile, int str_type, const char* str) ;
+```
+
+These functions allow strings to be set on files opened for write and to be
+retrieved from files opened for read where supported by the given file type. The
+**str_type** parameter can be any one of the following string types:
+
+| Name               | Value | Description   |
+|:-------------------|:------|:--------------|
+| SF_STR_TITLE       | 0x01  | Title.        |
+| SF_STR_COPYRIGHT   | 0x02  | Copyright.    |
+| SF_STR_SOFTWARE    | 0x03  | Software.     |
+| SF_STR_ARTIST      | 0x04  | Artist.       |
+| SF_STR_COMMENT     | 0x05  | Comment.      |
+| SF_STR_DATE        | 0x06  | Date.         |
+| SF_STR_ALBUM       | 0x07  | Album.        |
+| SF_STR_LICENSE     | 0x08  | License.      |
+| SF_STR_TRACKNUMBER | 0x09  | Track number. |
+| SF_STR_GENRE       | 0x10  | Genre.        |
+
+The sf_get_string() function returns the specified string if it exists and a
+NULL pointer otherwise. In addition to the string ids above, SF_STR_FIRST (==
+SF_STR_TITLE) and SF_STR_LAST (always the same as the highest numbers string id)
+are also available to allow iteration over all the available string ids.
+
+The sf_set_string() function sets the string data. It returns zero on success
+and non-zero on error.The error code can be converted to a string using
+sf_error_number().
+
+Strings passed to and retrieved from these two functions are assumed to be
+utf-8. However, while formats like Ogg/Vorbis and FLAC fully support utf-8,
+others like WAV and AIFF officially only support ASCII. Writing utf-8 strings to
+WAV and AIF files with libsndfile will work when read back with libsndfile, but
+may not work with other programs.
+
+The suggested method of dealing with tags retrieved using sf_get_string() is to
+assume they are utf-8. Similarly if you have a string in some exotic format like
+utf-16, it should be encoded to utf-8 before being written using libsndfile.
+
+## Function for retrieving library version {#version_string}
+
+```c
+const char *sf_version_string (void) ;
+```
+
+Return the library version string.
+
+## Function for retrieving current byterate {#current_byterate}
+
+```c
+int sf_current_byterate (SNDFILE *sndfile) ;
+```
+
+Return the current byterate at this point in the file. The byte rate in this
+case is the number of bytes per second of audio data. For instance, for a
+stereo, 18 bit PCM encoded file with an 16kHz sample rate, the byte rate
+would be 2 (stereo) \* 2 (two bytes per sample) * 16000 => 64000 bytes/sec.
+
+For some file formats the returned value will be accurate and exact, for some
+it will be a close approximation, for some it will be the average bitrate for
+the whole file and for some it will be a time varying value that was accurate
+when the file was most recently read or written.
+
+To get the bitrate, multiple this value by 8.
+
+`sf_current_byterate` returns byte per second or -1 if byterate is
+unknown.
+
+## Functions to get and set chunks from within a sound file
+
+These functions allow the getting and setting of chunks within a sound file (for
+those formats which allow it).
+
+These functions fail safely. Specifically, they will not allow you to overwrite
+existing chunks or add extra versions of format specific reserved chunks but
+should allow you to retrieve any and all chunks (may not be implemented for all
+chunks or all file formats).
+
+### sf_set_chunk
+
+```c
+int sf_set_chunk (SNDFILE *sndfile, const SF_CHUNK_INFO *chunk_info) ;
+```
+
+Set the specified chunk info (must be done before any audio data is written to
+the file). This will fail for format specific reserved chunks. The
+`chunk_info->data` pointer must be valid until the file is closed.
+
+The `SF_CHUNK_INFO` struct is documented as follows:
+
+```c
+struct SF_CHUNK_INFO
+{     char        id [64] ;   /* The chunk identifier. */
+    unsigned      id_size ;   /* The size of the chunk identifier. */
+    unsigned      datalen ;   /* The size of that data. */
+    void          *data ;     /* Pointer to the data. */
+} ;
+    typedef struct SF_CHUNK_INFO SF_CHUNK_INFO ;
+```
+
+`sf_set_chunk` returns `SF_ERR_NO_ERROR` on success or non-zero on failure.
+
+### sf_get_chunk_iterator
+
+```c
+SF_CHUNK_ITERATOR *
+sf_get_chunk_iterator (SNDFILE *sndfile, const SF_CHUNK_INFO *chunk_info) ;
+```
+
+Get an iterator for all chunks matching `chunk_info`.
+
+`SF_CHUNK_ITERATOR` is an opaque structure to an iterator over the all chunks of
+a given id and defined as follows:
+
+```c
+typedef	struct SF_CHUNK_ITERATOR SF_CHUNK_ITERATOR ;
+```
+
+The iterator will point to the first chunk matching `chunk_info`. Chunks are
+matching, if (`chunk_info->id`) matches the first (`chunk_info->id_size`) bytes
+of a chunk found in the `SNDFILE*` handle. If `chunk_info` is `NULL`, an
+iterator to all chunks in the `SNDFILE*` handle is returned. The values of
+`chunk_info->datalen` and `chunk_info->data` are ignored. If no matching chunks
+are found in the sndfile, `NULL` is returned.
+
+The returned iterator will stay valid until one of the following occurs:
+
+* The sndfile is closed.
+* A new chunk is added using [`sf_set_chunk()`](#sf_set_chunk).
+* Another chunk iterator function is called on the same `SNDFILE*`
+  handle that causes the iterator to be modified.
+
+The memory for the iterator belongs to the SNDFILE* handle and is freed when
+[sf_close](#close) is called.
+
+### sf_next_chunk_iterator
+
+```c
+sf_next_chunk_iterator (SF_CHUNK_ITERATOR * iterator) ;
+```
+
+Iterate through chunks by incrementing the iterator.
+
+Increments the iterator and returns a handle to the new one. After this call,
+iterator will no longer be valid, and you must use the newly returned handle
+from now on. The returned handle can be used to access the next chunk matching
+the criteria as defined in [sf_get_chunk_iterator](#sf_get_chunk_iterator).
+If iterator points to the last chunk, this will free all resources associated
+with iterator and return `NULL`. The returned iterator will stay valid until
+`sf_get_next_chunk_iterator` is called again, the sndfile is closed or a new
+chunk us added.
+
+### sf_get_chunk_size
+
+```c
+int
+sf_get_chunk_size (const SF_CHUNK_ITERATOR * it, SF_CHUNK_INFO * chunk_info) ;
+```
+
+Get the size of the specified chunk.
+
+If the specified chunk exists, the size will be returned in the `datalen` field
+of the `SF_CHUNK_INFO` struct. Additionally, the id of the chunk will be copied
+to the `id` field of the `SF_CHUNK_INFO` struct and it's `id_size` field will be
+updated accordingly.
+
+If the chunk doesn't exist `chunk_info->datalen` will be zero, and the `id` and
+`id_size` fields will be undefined.
+
+The function will return `SF_ERR_NO_ERROR` on success or non-zero on failure.
+
+### sf_get_chunk_data
+
+```c
+int
+sf_get_chunk_data (const SF_CHUNK_ITERATOR *it, SF_CHUNK_INFO *chunk_info) ;
+```
+
+Get the specified chunk data.
+
+If the specified chunk exists, up to `chunk_info->datalen` bytes of the chunk
+data will be copied into the `chunk_info->data` buffer (allocated by the caller)
+and the `chunk_info->datalen` field updated to reflect the size of the data. The
+`id` and `id_size` field will be updated according to the retrieved chunk. If
+the chunk doesn't exist `chunk_info->datalen` will be zero, and the `id` and
+`id_size` fields will be undefined.
+
+The function will return `SF_ERR_NO_ERROR` on success or non-zero on failure.
+
+## Note 1
+
+When converting between integer PCM formats of differing size (e.g. using
+sf_read_int() to read a 16 bit PCM encoded WAV file) libsndfile obeys one simple
+rule:
+
+Whenever integer data is moved from one sized container to another sized
+container, the most significant bit in the source container will become the most
+significant bit in the destination container.
+
+When converting between integer data and floating point data, different rules
+apply. The default behaviour when reading floating point data (sf_read_float()
+or sf_read_double ()) from a file with integer data is normalisation. Regardless
+of whether data in the file is 8, 16, 24 or 32 bit wide, the data will be read
+as floating point data in the range [-1.0, 1.0]. Similarly, data in the range
+[-1.0, 1.0] will be written to an integer PCM file so that a data value of 1.0
+will be the largest allowable integer for the given bit width. This
+normalisation can be turned on or off using the [sf_command](command.md)
+interface.
+
+## Note 2
+
+Reading a file containing floating point data (allowable with WAV, AIFF, AU and
+other file formats) using integer read methods (sf_read_short() or
+sf_read_int()) can produce unexpected results. For instance the data in the file
+may have a maximum absolute value &lt; 1.0 which would mean that all sample
+values read from the file will be zero. In order to read these files correctly
+using integer read methods, it is recommended that you use the
+[sf_command](command.md) interface, a command of
+[SFC_SET_SCALE_FLOAT_INT_READ](command.md#sfc_set_scale_float_int_read) and a
+parameter of SF_TRUE to force correct scaling.

extern/libsndfile-modified/docs/bugs.md

@@ -0,0 +1,47 @@
+---
+layout: page
+---
+
+# Reporting Bugs in libsndfile
+
+Before even attempting to report a bug in libsndfile please make sure you have
+read the [Frequently Asked Questions](FAQ.md). If you are having a problem
+writing code using libsndfile make sure you read the
+[Application Programming Interface](api.md) documentation.
+
+That said, I am interested in finding and fixing all genuine bugs in libsndfile.
+Bugs I want to fix include any of the following problems (and probably others):
+
+- Compilation problems on new platforms.
+- Errors being detected during the `make check` process.
+- Segmentation faults occurring inside libsndfile.
+- libsndfile hanging when opening a file.
+- Supported sound file types being incorrectly read or written.
+- Omissions, errors or spelling mistakes in the documentation.
+
+When submitting a bug report you must include:
+
+- Your system (CPU and memory size should be enough).
+- The operating system you are using.
+- Whether you are using a package provided by your distribution or you compiled
+  it yourself.
+- If you compiled it yourself, the compiler you are using. (Also make sure to
+  run `make check`.)
+- A description of the problem.
+- Information generated by the sndfile-info program (see next paragraph).
+- If you are having problems with sndfile-play and ALSA on Linux, I will need
+  information about your kernel, ALSA version, compiler version, whether you
+  compiled the kernel/ALSA your self or installed from a package etc.
+
+If libsndfile compiles and installs correctly but has difficulty reading a
+particular file or type of file you should run the **sndfile-info** program
+(from the examples directory of the libsndfile distribution) on the file. See
+[here](sndfile_info.md) for an example of the use of the **sndfile-info**
+program.
+
+Please do not send me a sound file which fails to open under libsndfile unless
+I specifically ask you to. The above information should usually suffice for most
+problems.
+
+Once you have the above information you should submit a ticket on the libsndfile
+[GitHub issue tracker](https://github.com/libsndfile/libsndfile/issues).

extern/libsndfile-modified/docs/development.md

@@ -0,0 +1,18 @@
+---
+layout: page
+---
+
+# libsndfile Development
+
+libsndfile is being developed by a small community of users and hackers. People
+interested in helping can raise an issue on Github.
+
+The main repository can be found on Github:
+
+<https://github.com/libsndfile/libsndfile/>
+
+and includes [instructions](https://github.com/libsndfile/libsndfile/blob/master/README.md)
+on how to build libsndfile from the Git repo.
+
+If you are interested in how to add a new format to a libsndfile, you may find
+this [FAQ](new_file_type_howto.md) helpful.

extern/libsndfile-modified/docs/donate.md

@@ -0,0 +1,60 @@
+---
+layout: page
+title: libsndfile : donate.
+---
+
+{% include logo.html %}
+
+Dear libsndfile user,
+
+This library was developed on Linux for Linux. I am not a Windows user and
+maintaining this library for Windows costs me significant amounts of time above
+and beyond the time taken to make it work on Linux and Unix-like systems.
+
+I therefore ask Windows users of libsndfile to donate to ensure that
+libsndfile's support for Windows continues. As long as donations continue to
+flow in at a decentrate, I will continue to release precompiled Windows binaries
+in sync with the Linux/Unix version. If donations are poor, support for windows
+will fall behind.
+
+You are free to donate any amount you chose. As a guideline:
+
+* If you are simply a user of libsndfile that would like to ensure that the
+  development of libsndfile continues, a donation of $10US would be more than
+  adequate.
+* If you are shareware author that distributes libsndfile with your app and
+  makes more than $1000 a year from your shareware, a one off donation of $50
+  would be appropriate.
+* If your company is a commercial software house that distributes one or more
+  products that ship with libsndfile, a donation of $100 every second or third
+  year would be appropriate.
+
+Donations can be made in Bitcoin to the Bitcoin address
+**15hVWemFiH6DLJ22SBYPk9b4fgWtxBEvfQ** which can be verified by checking the
+following GPG signature.
+
+    -----BEGIN PGP SIGNED MESSAGE-----
+    Hash: SHA256
+
+    libsndfile Bitcoin address : 15hVWemFiH6DLJ22SBYPk9b4fgWtxBEvfQ
+    -----BEGIN PGP SIGNATURE-----
+    Version: GnuPG v1.4.12 (GNU/Linux)
+
+    iQIcBAEBCAAGBQJSK7MUAAoJEEXYQ7zIiotIgXEP/R8hy65tlV7TiPw9bY9BklXS
+    /Vl8FU2RhDkBt61ZmxbfDTybyQ5Vce/3wWph15L4RvpoX1OyeintQFmwwuPjOGiq
+    eIz0nT9vDorG37Xdo5NZNBu9Tp1Od9MNtxFaAsRWFrDfvKEKljBHrcfM972cYrAp
+    DaFd0Ik+bHKom9iQXFB7TFd0w2V4uszVMQDUGqb/vRNeRURZS7ypeMNwc8tZyTKR
+    waEGMTa5sxxRjs7MqGRxSovnFT7JV3TNfdkBInUliIR/XvrudFR9J4Fiv+8Dk9P8
+    WNjm6uFxvgIqiu1G9bjrwwr+DsBju93ljGNcZoayAKw5vwbX6KTcCbc31k9dP8Hf
+    p6YdmPlZVKZmva+P3nLSJBTlxNu24Jm+ha+ZM/svDXTaPFWC8l5FP17kK0Bj8wCq
+    N7pDz6RchEn10u+HdhfT1XiUjxj0zNXrr0GGj9apjl0RlT0O49eBttV0oXIdBRLi
+    nTEaOWITpCgu7ggw1kWXHIWEncuiaSuJy/iH8PgNepWVj/6PxQRMrTqG4ux2Snk8
+    Ua4vO8YHLMZX/XvSUS7eMtgfM7AO6YjJ/ac9bQif9bh6LsYEVVklysMUin6ZRS7Z
+    Cms23FnqeQKtJOzdvqSJiV06lK6fP+tYdM4WSYn+AfL4IfYl2v48xXVU8XOOK9BH
+    bJPKMDcz1ZvfYtX5mSW1
+    =WXGB
+    -----END PGP SIGNATURE-----
+
+Thanks and regards,  
+Erik de Castro Lopo  
+Main libsndfile author and maintainer

extern/libsndfile-modified/docs/embedded_files.md

@@ -0,0 +1,21 @@
+---
+layout: page
+---
+
+# Embedded Sound Files
+
+By using the open SNDFILE with a file descriptor function:
+
+    SNDFILE*  sf_open_fd (int fd, int mode, SF_INFO *sfinfo, int close_desc) ;
+
+it is possible to open sound files embedded within larger files. There are
+however a couple of caveats:
+
+* Read/Write mode (SFM_RDWR) is not supported.
+* Writing of embedded files is only supported at the end of the file.
+* Reading of embedded files is only supported at file offsets greater than zero.
+* Not all file formats are supported (currently only WAV, AIFF and AU).
+
+The test program **multi_file_test.c** in the **tests/** directory of the source
+code tarball shows how this functionality is used to read and write embedded
+files.

extern/libsndfile-modified/docs/formats.md

@@ -0,0 +1,53 @@
+---
+layout: page
+title: libsndfile: Supported formats
+---
+
+# libsndfile : Supported formats
+
+The following table lists the file formats and encodings that libsndfile can
+read and write. The file formats are arranged across the top and encodings along
+the left edge.
+
+{:.formats-table}
+|                    | Microsoft WAV | SGI / Apple AIFF / AIFC |Sun / DEC / NeXT AU / SND | Headerless RAW | Paris Audio File PAF | Commodore Amiga IFF / SVX | Sphere Nist WAV | IRCAM SF | Creative VOC | Soundforge W64 | GNU Octave 2.0 MAT4 | GNU Octave 2.1 MAT5 | Portable Voice Format PVF | Fasttracker 2 XI | HMM Tool Kit HTK | Apple CAF | Sound Designer II SD2 | Free Lossless Audio Codec FLAC |
+|:-------------------|:-------------:|:-----------------------:|:------------------------:|:--------------:|:--------------------:|:-------------------------:|:---------------:|:--------:|:------------:|:--------------:|:-------------------:|:-------------------:|:-------------------------:|:----------------:|:----------------:|:---------:|:---------------------:|:------------------------------:|
+| Unsigned 8 bit PCM | R/W           | R/W                     |                          | R/W            |                      |                           |                 |          | R/W          | R/W            |                     | R/W                 |                           |                  |                  |           |                       |                                |
+| Signed 8 bit PCM   |               | R/W                     | R/W                      | R/W            | R/W                  | R/W                       | R/W             |          |              |                |                     |                     | R/W                       |                  |                  | R/W       | R/W                   | R/W                            |
+| Signed 16 bit PCM  | R/W           | R/W                     | R/W                      | R/W            | R/W                  | R/W                       | R/W             | R/W      | R/W          | R/W            | R/W                 | R/W                 | R/W                       |                  | R/W              | R/W       | R/W                   | R/W                            |
+| Signed 24 bit PCM  | R/W           | R/W                     | R/W                      | R/W            | R/W                  |                           | R/W             |          |              | R/W            |                     |                     |                           |                  |                  | R/W       | R/W                   | R/W                            |
+| Signed 32 bit PCM  | R/W           | R/W                     | R/W                      | R/W            |                      |                           | R/W             | R/W      |              | R/W            | R/W                 | R/W                 | R/W                       |                  |                  | R/W       |                       |                                |
+| 32 bit float       | R/W           | R/W                     | R/W                      | R/W            |                      |                           |                 | R/W      |              | R/W            | R/W                 | R/W                 |                           |                  |                  | R/W       |                       |                                |
+| 64 bit double      | R/W           | R/W                     | R/W                      | R/W            |                      |                           |                 |          |              | R/W            | R/W                 | R/W                 |                           |                  |                  | R/W       |                       |                                |
+| u-law encoding     | R/W           | R/W                     | R/W                      | R/W            |                      |                           | R/W             | R/W      | R/W          | R/W            |                     |                     |                           |                  |                  | R/W       |                       |                                |
+| A-law encoding     | R/W           | R/W                     | R/W                      | R/W            |                      |                           | R/W             | R/W      | R/W          | R/W            |                     |                     |                           |                  |                  | R/W       |                       |                                |
+| IMA ADPCM          | R/W           |                         |                          |                |                      |                           |                 |          |              | R/W            |                     |                     |                           |                  |                  |           |                       |                                |
+| MS ADPCM           | R/W           |                         |                          |                |                      |                           |                 |          |              | R/W            |                     |                     |                           |                  |                  |           |                       |                                |
+| GSM 6.10           | R/W           | R/W                     |                          | R/W            |                      |                           |                 |          |              | R/W            |                     |                     |                           |                  |                  |           |                       |                                |
+| G721 ADPCM 32kbps  | R/W           |                         | R/W                      |                |                      |                           |                 |          |              |                |                     |                     |                           |                  |                  |           |                       |                                |
+| G723 ADPCM 24kbps  |               |                         | R/W                      |                |                      |                           |                 |          |              |                |                     |                     |                           |                  |                  |           |                       |                                |
+| G723 ADPCM 40kbps  |               |                         | R/W                      |                |                      |                           |                 |          |              |                |                     |                     |                           |                  |                  |           |                       |                                |
+| 12 bit DWVW        |               | R/W                     |                          | R/W            |                      |                           |                 |          |              |                |                     |                     |                           |                  |                  |           |                       |                                |
+| 16 bit DWVW        |               | R/W                     |                          | R/W            |                      |                           |                 |          |              |                |                     |                     |                           |                  |                  |           |                       |                                |
+| 24 bit DWVW        |               | R/W                     |                          | R/W            |                      |                           |                 |          |              |                |                     |                     |                           |                  |                  |           |                       |                                |
+| Ok Dialogic ADPCM  |               |                         |                          | R/W            |                      |                           |                 |          |              |                |                     |                     |                           |                  |                  |           |                       |                                |
+| 8 bit DPCM         |               |                         |                          |                |                      |                           |                 |          |              |                |                     |                     |                           | R/W              |                  |           |                       |                                |
+| 16 bit DPCM        |               |                         |                          |                |                      |                           |                 |          |              |                |                     |                     |                           | R/W              |                  |           |                       |                                |
+
+From version 1.0.18, libsndfile also reads and writes
+[FLAC](https://xiph.org/flac/) and [Ogg/Vorbis](https://xiph.org/vorbis/).
+
+From version 1.0.29, libsndfile can read and write
+[Ogg/Opus](https://opus-codec.org/).
+
+From version 1.1.0, libsndfile can read and write MP3.
+
+Some of the file formats I am also interested in adding are:
+
+- Kurzweil K2000 sampler files.
+- Ogg Speex.
+
+Other file formats may also be added on request.
+
+If you are interested in how to add a new format to a libsndfile, you may find
+this [FAQ](new_file_type_howto.md) helpful.

extern/libsndfile-modified/docs/index.md

@@ -0,0 +1,322 @@
+---
+layout: home
+title: The libsndfile Home Page
+---
+
+Libsndfile is a C library for reading and writing files containing sampled sound
+(such as MS Windows WAV and the Apple/SGI AIFF format) through one standard
+library interface. It is released in source code format under the
+[Gnu Lesser General Public License](http://www.gnu.org/copyleft/lesser.html).
+
+The library was written to compile and run on a Linux system but should compile
+and run on just about any Unix (including MacOS X).
+There are also pre-compiled binaries available for 32 and 64 bit windows.
+
+It was designed to handle both little-endian (such as WAV) and big-endian (such
+as AIFF) data, and to compile and run correctly on little-endian (such as Intel
+and DEC/Compaq Alpha) processor systems as well as big-endian processor systems
+such as Motorola 68k, Power PC, MIPS and Sparc. Hopefully the design of the
+library will also make it easy to extend for reading and writing new sound file
+formats.
+
+It has been compiled and tested (at one time or another) on the following
+systems:
+
+* Every platform supported by Debian GNU/Linux including x86_64-linux-gnu,
+  i486-linux-gnu, powerpc-linux-gnu, sparc-linux-gnu, alpha-linux-gnu,
+  mips-linux-gnu and armel-linux-gnu.
+* powerpc-apple-darwin7.0 (Mac OS X 10.3)
+* sparc-sun-solaris2.8 (using gcc)
+* mips-sgi-irix5.3 (using gcc)
+* QNX 6.0
+* i386-unknown-openbsd2.9
+* Microsoft Windows
+
+At the moment, each new release is being tested on i386 Linux, x86_64 Linux,
+PowerPC Linux, Win32 and Win64.
+
+## Features
+
+libsndfile has the following main features :
+
+* Ability to read and write a large number of [file formats](formats.html).
+* A simple, elegant and easy to use Applications Programming Interface.
+* Usable on Unix, Win32, MacOS and others.
+* On the fly format conversion, including endian-ness swapping, type conversion
+  and bitwidth scaling.
+* Optional normalisation when reading floating point data from files containing
+  integer data.
+* Ability to open files in read/write mode.
+* The ability to write the file header without closing the file (only on files
+  open for write or read/write).
+* Ability to query the library about all supported formats and retrieve text
+  strings describing each format.
+
+libsndfile has a comprehensive test suite so that each release is as bug free
+as possible.
+When new bugs are found, new tests are added to the test suite to ensure that
+these bugs don't creep back into the code.
+When new features are added, tests are added to the test suite to make sure that
+these features continue to work correctly even when they are old features.
+
+## History
+
+My first attempt at reading and writing WAV files was in 1990 or so under
+Windows 3.1. I started using Linux in early 1995 and contributed some code to
+the [wavplay](http://www.vaxxine.com/ve3wwg/gnuwave.html) program. That
+contributed code would eventually mutate into this library. As one of my
+interests is Digital Signal Processing (DSP) I decided that as well as reading
+data from an audio file in the native format (typically 16 bit short integers)
+it would also be useful to be able to have the library do the conversion to
+floating point numbers for DSP applications. It then dawned on me that whatever
+file format (anything from 8 bit unsigned chars, to 32 bit floating point
+numbers) the library should be able to convert the data to whatever format the
+library user wishes to use it in. For example, in a sound playback program, the
+library caller typically wants the sound data in 16 bit short integers to dump
+into a sound card even though the data in the file may be 32 bit floating point
+numbers (ie Microsoft's WAVE_FORMAT_IEEE_FLOAT format). Another example would be
+someone doing speech recognition research who has recorded some speech as a 16
+bit WAV file but wants to process it as double precision floating point numbers.
+
+Here is the release history for libsndfile:
+
+* Version 0.0.8 (Feb 15 1999) First official release.
+* Version 0.0.28 (Apr 26 2002) Final release of version 0 of libsndfile.
+* Version 1.0.0rc1 (Jun 24 2002) Release candidate 1 of version 1 of libsndfile.
+* Version 1.0.0rc6 (Aug 14 2002) MacOS 9 fixes.
+* Version 1.0.0 (Aug 16 2002) First 1.0.X release.
+* Version 1.0.1 (Sep 14 2002) Added MAT4 and MAT5 file formats.
+* Version 1.0.2 (Nov 24 2002) Added VOX ADPCM format.
+* Version 1.0.3 (Dec 09 2002) Fixes for Linux on ia64 CPUs.
+* Version 1.0.4 (Feb 02 2003) New file formats and functionality.
+* Version 1.0.5 (May 03 2003) One new file format and new functionality.
+* Version 1.0.6 (Feb 08 2004) Large file fix for Linux/Solaris, new
+  functionality   and Win32 improvements.
+* Version 1.0.7 (Feb 24 2004) Fix build problems on MacOS X and fix ia64/MIPS
+  etc clip mode detection.
+* Version 1.0.8 (Mar 14 2004) Minor bug fixes.
+* Version 1.0.9 (Mar 30 2004) Add AVR format. Improve handling of some WAV
+  files.
+* Version 1.0.10 (Jun 15 2004) Minor bug fixes. Fix support for Win32 MinGW
+  compiler.
+* Version 1.0.11 (Nov 15 2004) Add SD2 file support, reading of loop data in WAV
+  and AIFF. Minor bug fixes.
+* Version 1.0.12 (Sep 30 2005) Add FLAC and CAF file support, virtual I/O
+  interface. Minor bug fixes and cleanups.
+* Version 1.0.13 (Jan 21 2006) Add read/write of instrument chunks. Minor bug
+  fixes.
+* Version 1.0.14 (Feb 19 2006) Minor bug fixes. Start shipping windows
+  binary/source ZIP.
+* Version 1.0.15 (Mar 16 2006) Minor bug fixes.
+* Version 1.0.16 (Apr 30 2006) Add support for RIFX. Other minor feature
+  enhancements and bug fixes.
+* Version 1.0.17 (Aug 31 2006) Add C++ wrapper sndfile.hh. Minor bug fixes and
+  cleanups.
+* Version 1.0.18 (Feb 07 2009) Add Ogg/Vorbis support, remove captive
+  libraries, many new features and bug fixes. Generate Win32 and Win64
+  pre-compiled binaries.
+* Version 1.0.19 (Mar 02 2009) Fix for CVE-2009-0186. Huge number of minor fixes
+  as a result of static analysis.
+* Version 1.0.20 (May 14 2009) Fix for potential heap overflow.
+* Version 1.0.21 (December 13 2009) Bunch of minor bug fixes.
+* Version 1.0.22 (October 04 2010) Bunch of minor bug fixes.
+* Version 1.0.23 (October 10 2010) Minor bug fixes.
+* Version 1.0.24 (March 23 2011) Minor bug fixes.
+* Version 1.0.25 (July 13 2011) Fix for Secunia Advisory SA45125. Minor bug
+  fixes and improvements.
+* Version 1.0.26 (November 22 2015) Fix for CVE-2014-9496, CVE-2014-9756 and
+  CVE-2015-7805. Add ALAC/CAF support. Minor bug fixes and improvements.
+* Version 1.0.27 (June 19 2016) Fix a seek regression in 1.0.26. Add metadata
+  read/write for CAF and RF64. FIx PAF endian-ness issue.
+* Version 1.0.28 (April 2 2017) Fix buffer overruns in FLAC and ID3 handling
+  code. Reduce default header memory requirements. Fix detection of Large File
+  Support for 32 bit systems.
+* Version 1.0.29 (August 15 2020) Opus support, build system improvements and
+  bug fixes.
+* Version 1.0.30 (September 19 2020) Bugfix release. Fix file descriptor leaks
+  in sf_open_fd () function. Fix critical CMake bug leading to broken ABI on
+  Linux platforms. Other numerous fixes to CMake build system, consider it
+  stable now. Fix some memory leaks. Fix handling of some SD2 files. Update
+  documentation. Integrate GitHub Actions for faster test builds and Oss-Fuzz
+  for fuzzing tests. Move sndfile.h.in from src/ to include/ directory. To avoid
+  problems, delete old generated sndfile.h from $(top_builddir)/src.
+* Version 1.0.31 (January 24 2021) Bugfix release. Fix multiple memory leaks
+  reported by OSS-Fuzz. More SSE2-optimized functions for x86 and amd64.
+* Version 1.1.0 (March 27 2022) Minor release, backward compatible with previous
+  releases. Added long-awaited MP3 support. Numerous improvements and bugfixes.
+* Version 1.2.0 (December 25 2022) Various bugfixes,
+  removed artificial samplerate limit
+* Version 1.2.1 (August 12 2023) Patch release, various bugfixes.
+* Version 1.2.2 (August 13 2023) Patch release, various bugfixes.
+
+## Similar or Related Projects
+
+* [SoX](http://sox.sourceforge.net/) is a program for converting between sound
+  file formats.
+* [Wavplay](http://www.hitsquad.com/smm/programs/WavPlay/) started out as a
+  minimal WAV file player under Linux and has mutated into Gnuwave, a
+  client/server application for more general multimedia and games sound
+  playback.
+* [Audiofile](http://www.68k.org/~michael/audiofile/) (libaudiofile) is a
+  library similar to libsndfile but with a different programming interface. The
+  author Michael Pruett has set out to clone (and fix some bugs in) the
+  libaudiofile library which ships with SGI's IRIX OS.
+* [sndlib.tar.gz](ftp://ccrma-ftp.stanford.edu/pub/Lisp/sndlib.tar.gz) is
+  another library written by Bill Schottstaedt of CCRMA.
+
+## Licensing
+
+libsndfile is released under the terms of the GNU Lesser General Public License,
+of which there are two versions;
+[version 2.1](http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html)
+and
+[version 3](http://www.gnu.org/copyleft/lesser.html).
+To maximise the compatibility of libsndfile, the user may choose to use
+libsndfile under either of the above two licenses.
+You can also read a simple explanation of the ideas behind the GPL and the LGPL
+[here](http://www.gnu.org/copyleft/lesser.html).
+
+You can use libsndfile with
+[Free Software](http://www.gnu.org/),
+[Open Source](http://www.opensource.org/),
+proprietary, shareware or other closed source applications as long as libsndfile
+is used as a dynamically loaded library and you abide by a small number of other
+conditions (read the LGPL for more info).
+With applications released under the GNU GPL you can also use libsndfile
+statically linked to your application.
+
+I would like to see libsndfile used as widely as possible but I would prefer it
+if you released software that uses libsndfile as
+[Free Software](http://www.gnu.org/)
+or
+[Open Source](http://www.opensource.org/).
+However, if you put in a great deal of effort building a significant application
+which simply uses libsndfile for file I/O, then I have no problem with you
+releasing that as closed source and charging as much money as you want for it as
+long as you abide by [the license](http://www.gnu.org/copyleft/lesser.html).
+
+## Download
+
+Check latest version on
+[GitHub Releases page](https://github.com/libsndfile/libsndfile/releases/).
+
+Binaries and source packages are signed by current releaser David Seifert aka
+@SoapGentoo. You can verify signatures with his public GPG key:
+
+```
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v2
+
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+-----END PGP PUBLIC KEY BLOCK-----
+```
+
+## See Also
+
+* [sndfile-tools](https://github.com/libsndfile/sndfile-tools): a small
+collection of programs which use libsndfile.

extern/libsndfile-modified/docs/libsndfile.css

@@ -0,0 +1,101 @@
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extern/libsndfile-modified/docs/linux_games_programming.txt

@@ -0,0 +1,434 @@
+# Here are some some emails I exchanged with a guy trying to use 
+# libsndfile version 1 with code from the book "Linux Games Programming"
+# by John Hall. The email addresses have been changed to foil the spam
+# bots.
+
+Date: Tue, 20 Jul 2004 22:49:21 +0100
+From: Paul <paul@fake-domain-name.co.uk>
+To: erikd@fake-domain-name.com
+Subject: Can you help with a problem?
+Date: Tue, 20 Jul 2004 22:49:21 +0100
+
+Hi,
+
+I'm trying to get the source examples in the "Programming Linux Games" 
+(NoStarch, Loki Software + John R. Hall) which use sndfile.h/libsndfile.
+
+While I can guess some of the newer versions of function calls and 
+enumerations, there are some which I cannot guess.
+
+Would you be able to translate them to the current version of 
+enumeration and function calls so that I can update the source?
+
+These are the three currently failing me:
+
+    sf_open_read(filename, SF_INFO *sfinfo) (guess: sf_open(filename,SFM_READ, &sfinfo))
+    SF_FORMAT_PCM (guess: either SF_FORMAT_PCM_U8 or _RAW)
+    SF_INFO.pcmbitwidth (guess: no idea!)
+
+There are probably more. I'm happy to send you the source files for 
+sound calls, scan the pages or anything else. Failing that, is there 
+somewhere with the changes listed so I can try and fix the code for myself?
+
+Thanks
+
+TTFN
+
+Paul
+
+================================================================================
+
+Date: Wed, 21 Jul 2004 17:38:08 +1000
+From: Erik de Castro Lopo <erikd@fake-domain-name.com>
+To: Paul <paul@fake-domain-name.co.uk>
+Subject: Re: Can you help with a problem?
+
+On Tue, 20 Jul 2004 22:49:21 +0100
+Paul <paul@fake-domain-name.co.uk> wrote:
+
+> Hi,
+> 
+> I'm trying to get the source examples in the "Programming Linux Games" 
+> (NoStarch, Loki Software + John R. Hall) which use sndfile.h/libsndfile.
+> 
+> While I can guess some of the newer versions of function calls and 
+> enumerations, there are some which I cannot guess.
+> 
+> Would you be able to translate them to the current version of 
+> enumeration and function calls so that I can update the source?
+> 
+> These are the three currently failing me:
+> 
+> sf_open_read(filename, SF_INFO *sfinfo) (guess: sf_open(filename, 
+> SFM_READ, &sfinfo))
+
+yes.
+
+> SF_FORMAT_PCM (guess: either SF_FORMAT_PCM_U8 or _RAW)
+
+Actually this list:
+
+    SF_FORMAT_PCM_U8
+    SF_FORMAT_PCM_S8
+    SF_FORMAT_PCM_16
+    SF_FORMAT_PCM_24
+    SF_FORMAT_PCM_32
+
+> SF_INFO.pcmbitwidth (guess: no idea!)
+
+WIth the above change, pcmbitwidth becomes redundant.
+
+> There are probably more. I'm happy to send you the source files for 
+> sound calls, scan the pages or anything else. Failing that, is there 
+> somewhere with the changes listed so I can try and fix the code for
+> myself?
+
+Version 1.0.0 came out some time ago, but I think this:
+
+    http://www.mega-nerd.com/libsndfile/version-1.html
+
+lists most of the changes. You should also look at the API docs:
+
+    http://www.mega-nerd.com/libsndfile/api.html
+
+HTH,
+Erik
+-- 
++-----------------------------------------------------------+
+  Erik de Castro Lopo      nospam@fake-domain-name.com
++-----------------------------------------------------------+
+"There is no reason why anyone would want a computer in their home"
+Ken Olson, DEC, 1977
+
+================================================================================
+
+From: PFJ <paul@fake-domain-name.co.uk>
+To: Erik de Castro Lopo <erikd@fake-domain-name.com>
+Subject: Re: Can you help with a problem?
+Date: Wed, 21 Jul 2004 09:07:39 +0100
+
+
+Hi Erik,
+
+Thanks for getting back to me.
+
+> > sf_open_read(filename, SF_INFO *sfinfo) (guess: sf_open(filename, SFM_READ, &sfinfo))
+>
+> yes.
+
+Yay!
+
+> > SF_FORMAT_PCM (guess: either SF_FORMAT_PCM_U8 or _RAW)
+>
+> Actually this list:
+>
+>     SF_FORMAT_PCM_U8
+>     SF_FORMAT_PCM_S8
+>     SF_FORMAT_PCM_16
+>     SF_FORMAT_PCM_24
+>     SF_FORMAT_PCM_32
+
+I know, but the source code explicitly has SF_FORMAT_PCM which given the
+code afterwards would equate to one of the above, but given that PCM
+files can have a varied bitwidth the author probably wanted to cover all
+bases.
+
+> Version 1.0.0 came out some time ago, but I think this:
+>
+>     http://www.mega-nerd.com/libsndfile/version-1.html
+>
+> lists most of the changes. You should also look at the API docs:
+>
+>     http://www.mega-nerd.com/libsndfile/api.html
+
+I'll download them and see what I can gleen.
+
+Thanks again for getting back to me
+
+TTFN
+
+Paul
+
+================================================================================
+
+Date: Wed, 21 Jul 2004 18:20:29 +1000
+From: Erik de Castro Lopo <erikd@fake-domain-name.com>
+To: PFJ <paul@fake-domain-name.co.uk>
+Subject: Re: Can you help with a problem?
+
+On Wed, 21 Jul 2004 09:07:39 +0100
+PFJ <paul@fake-domain-name.co.uk> wrote:
+
+> I know, but the source code explicitly has SF_FORMAT_PCM which given the
+> code afterwards would equate to one of the above, but given that PCM
+> files can have a varied bitwidth the author probably wanted to cover all
+> bases.
+
+But surely the existing code does something like:
+
+    sfinfo.format = SF_FORMAT_WAV | SF_FORMAT_PCM;
+    sfinfo.pcmbitwidth = 16;
+
+which can be directly translated to:
+
+    sfinfo.format = SF_FORMAT_WAV | SF_FORMAT_PCM_16;
+
+and the same for pcmbitwitdhs of 24 and 32. For pcmbitwidth of 8
+you need to know that WAV files use SF_FORMAT_PCM_U8 and AIFF
+files use SF_FORMAT_PCM_S8. That's all there is to it.
+
+Erik
+-- 
++-----------------------------------------------------------+
+  Erik de Castro Lopo      nospam@fake-domain-name.com
++-----------------------------------------------------------+
+"Python addresses true pseudocode's two major failings: that it
+isn't standardized, and it isn't executable."
+- Grant R. Griffin  in comp.dsp
+
+================================================================================
+
+Subject: Re: Can you help with a problem?
+From: PFJ <paul@fake-domain-name.co.uk>
+To: Erik de Castro Lopo <erikd@fake-domain-name.com>
+Date: Wed, 21 Jul 2004 09:50:55 +0100
+
+Hi Erik,
+
+> > I know, but the source code explicitly has SF_FORMAT_PCM which given the
+> > code afterwards would equate to one of the above, but given that PCM
+> > files can have a varied bitwidth the author probably wanted to cover all
+> > bases.
+>
+> But surely the existing code does something like:
+>
+>     sfinfo.format = SF_FORMAT_WAV | SF_FORMAT_PCM;
+>     sfinfo.pcmbitwidth = 16;
+
+If only!
+
+The actual code is this
+
+int LoadSoundFile(char *filename, sound_p sound)
+{
+    SNDFILE *file;
+    SF_INFO file_info;
+    short *buffer_short = NULL;
+    u_int8_t *buffer_8 = NULL;
+    int16_t *buffer_16 = NULL;
+    unsigned int i;
+
+    /* Open the file and retrieve sample information. */
+    file = sf_open_read(filename, &file_info);
+    // I've sorted this one already - PFJ
+
+    /* Make sure the format is acceptable. */
+    if ((file_info.format & 0x0F) != SF_FORMAT_PCM) {
+		printf("'%s' is not a PCM-based audio file.\n", filename);
+		sf_close(file);
+		return -1;
+    }
+
+    if ((file_info.pcmbitwidth == 8) && (file_info.channels == 1)) {
+		sound->format = AL_FORMAT_MONO8;
+    } else if ((file_info.pcmbitwidth == 8) && (file_info.channels == 2)) {
+		sound->format = AL_FORMAT_STEREO8;
+    } else if ((file_info.pcmbitwidth == 16) && (file_info.channels == 1)) {
+		sound->format = AL_FORMAT_MONO16;
+    } else if ((file_info.pcmbitwidth == 16) && (file_info.channels == 2)) {
+		sound->format = AL_FORMAT_STEREO16;
+    } else {
+		printf("Unknown sample format in %s.\n", filename);
+		sf_close(file);
+		return -1;
+    }
+
+    /* Allocate buffers. */
+    buffer_short = (short *)malloc(file_info.samples * file_info.channels * sizeof (short));
+
+    buffer_8 = (u_int8_t *)malloc(file_info.samples * file_info.channels * file_info.pcmbitwidth / 8);
+
+    buffer_16 = (int16_t *)buffer_8;
+
+    if (buffer_short == NULL || buffer_8 == NULL) {
+		printf("Unable to allocate enough memory for '%s'.\n", filename);
+		goto error_cleanup;
+    }
+
+    /* Read the entire sound file. */
+    if (sf_readf_short(file,buffer_short,file_info.samples) == (size_t)-1) {
+		printf("Error while reading samples from '%s'.\n", filename);
+		goto error_cleanup;
+    }
+
+<minor snip>
+
+    /* Fill in the sound data structure. */
+    sound->freq = file_info.samplerate;
+    sound->size = file_info.samples * file_info.channels * file_info.pcmbitwidth / 8;
+
+    /* Give our sound data to OpenAL. */
+    alGenBuffers(1, &sound->name);
+    if (alGetError() != AL_NO_ERROR) {
+		printf("Error creating an AL buffer name for %s.\n", filename);
+		goto error_cleanup;
+    }
+
+    alBufferData(sound->name, sound->format, buffer_8, sound->size,sound->freq);
+    if (alGetError() != AL_NO_ERROR) {
+		printf("Error sending buffer data to OpenAL for %s.\n", filename);
+		goto error_cleanup;
+    }
+
+    /* Close the file and return success. */
+    sf_close(file);
+    free(buffer_short);
+    free(buffer_8);
+
+    return 0;
+
+ error_cleanup:
+    if (file != NULL) fclose(file);
+    free(buffer_short);
+    free(buffer_8);
+    return -1;
+}
+
+As you can see, the PCM material in the listing will not currently
+compile and for the other sndfile material, it probably won't either.
+
+Any help would be appreciated.
+
+TTFN
+
+Paul
+
+================================================================================
+
+From: Erik de Castro Lopo <erikd@fake-domain-name.com>
+To: PFJ <paul@fake-domain-name.co.uk>
+Subject: Re: Can you help with a problem?
+Date: Wed, 21 Jul 2004 19:36:46 +1000
+
+On Wed, 21 Jul 2004 09:50:55 +0100
+PFJ <paul@fake-domain-name.co.uk> wrote:
+
+> Hi Erik,
+> 
+> > > I know, but the source code explicitly has SF_FORMAT_PCM which given the
+> > > code afterwards would equate to one of the above, but given that PCM
+> > > files can have a varied bitwidth the author probably wanted to cover all
+> > > bases.
+> > 
+> > But surely the existing code does something like:
+> > 
+> >     sfinfo.format = SF_FORMAT_WAV | SF_FORMAT_PCM;
+> >     sfinfo.pcmbitwidth = 16;
+> 
+> If only!
+
+No, really.
+
+Drop this completely:
+
+>     /* Make sure the format is acceptable. */
+>     if ((file_info.format & 0x0F) != SF_FORMAT_PCM) {
+> 	printf("'%s' is not a PCM-based audio file.\n", filename);
+> 	sf_close(file);
+> 	return -1;
+>     }
+
+Replace this block:
+
+>     if ((file_info.pcmbitwidth == 8) && (file_info.channels == 1)) {
+> 	        sound->format = AL_FORMAT_MONO8;
+>     } else if ((file_info.pcmbitwidth == 8) && (file_info.channels == 2)) {
+>           sound->format = AL_FORMAT_STEREO8;
+>     } else if ((file_info.pcmbitwidth == 16) && (file_info.channels == 1)) {
+>           sound->format = AL_FORMAT_MONO16;
+>     } else if ((file_info.pcmbitwidth == 16) && (file_info.channels == 2)) {
+>           sound->format = AL_FORMAT_STEREO16;
+>     } else {
+>           printf("Unknown sample format in %s.\n", filename);
+>           sf_close(file);
+>           return -1;
+>     }
+
+with:
+
+    int pcmbitwidth = 0;
+
+    if (file_info.format & SF_FORMAT_SUBMASK != SF_FORMAT_PCM_16)
+    { 	printf("'%s' is not a PCM-based audio file.\n", filename);
+        sf_close(file);
+        return -1;
+        }
+
+    if (file_info.channels < 1 || file_info.channels > 2)
+    { 	printf("'%s' bad channel count.\n", filename);
+        sf_close(file);
+        return -1;
+        }
+
+    switch (file_info.format & SF_FORMAT_SUBMASK + file_info.channels << 16)
+    {    case (SF_FORMAT_PCM_U8 + 1 << 16):
+             sound->format = AL_FORMAT_MONO8;
+             pcmbitwidth = 8;
+             break;
+         case (SF_FORMAT_PCM_U8 + 2 << 16):
+             sound->format = AL_FORMAT_STEREO8;
+             pcmbitwidth = 8;
+             break;
+         case (SF_FORMAT_PCM_16 + 1 << 16):
+             sound->format = AL_FORMAT_MONO16;
+             pcmbitwidth = 16;
+             break;
+         case (SF_FORMAT_PCM_16 + 2 << 16):
+             sound->format = AL_FORMAT_STEREO16;
+             pcmbitwidth = 16;
+             break;
+         default:
+             printf("Unknown sample format in %s.\n", filename);
+             sf_close(file);
+             return -1;
+         }
+
+>     /* Allocate buffers. */
+>     buffer_short = (short *)malloc(file_info.samples *
+> 				   file_info.channels * 
+> 				   sizeof (short));
+> 
+>     buffer_8 = (u_int8_t *)malloc(file_info.samples *
+> 				  file_info.channels *
+> 				  file_info.pcmbitwidth / 8);
+
+Use pcmbitwidth as calculated above.
+
+>     buffer_16 = (int16_t *)buffer_8;
+> 
+>     if (buffer_short == NULL || buffer_8 == NULL) {
+> 	printf("Unable to allocate enough memory for '%s'.\n", filename);
+> 	goto error_cleanup;
+>     }
+> 
+>     /* Read the entire sound file. */
+>     if (sf_readf_short(file,buffer_short,file_info.samples) == (size_t)- 1) {
+
+Replace "(size_t) - 1" with " < 0".
+
+> As you can see, the PCM material in the listing will not currently
+> compile and for the other sndfile material, it probably won't either.
+
+None of the changes above should have been very difficult to figure
+out.
+
+Erik
+-- 
++-----------------------------------------------------------+
+  Erik de Castro Lopo      nospam@fake-domain-name.com
++-----------------------------------------------------------+
+Microsoft is finally bringing all of its Windows operating system families
+under one roof. It will combine all of the features of CE, stability and
+support of ME and the speed of NT.
+It will be called Windows CEMENT...
+

extern/libsndfile-modified/docs/lists.md

@@ -0,0 +1,27 @@
+---
+layout: page
+title: libsndfile Mailing Lists
+---
+
+# libsndfile Mailing Lists
+
+**Note**: These mailing lists are not maintained by the libsndfile team anymore.
+Use [GitHub issues and pull requests instead](https://docs.github.com/en/free-pro-team@latest/github/collaborating-with-issues-and-pull-requests).
+
+There are three mailing lists for libsndfile:
+
+ - **libsndfile-announce@mega-nerd.com**  
+  [Subscribe](mailto:libsndfile-announce-request@mega-nerd.com?subject=subscribe)  
+  A list which will announce each new release of libsndfile. No one can
+  post to this list except the author.  
+- **libsndfile-devel@mega-nerd.com**  
+  [Subscribe](mailto:libsndfile-devel-request@mega-nerd.com?subject=subscribe)  
+  A list for discussing bugs, porting issues and feature requests.
+  Posting is restricted to subscribers.  
+- **libsndfile-users@mega-nerd.com**  
+  [Subscribe](mailto:libsndfile-users-request@mega-nerd.com?subject=subscribe)  
+  A list for discussing the use of libsndfile in other programs.
+  Posting is restricted to subscribers.  
+
+The libsndfile-devel and libsndfile-users list will automatically receive a copy
+of all emails to the libsndfile-announce list.

extern/libsndfile-modified/docs/new_file_type_howto.md

@@ -0,0 +1,134 @@
+---
+layout: page
+---
+
+# How to add new file format
+
+   Original : Wed May 23 19:05:07 EST 2001
+   Update 1 : Fri Jul 11 22:12:38 EST 2003
+
+This document will attempt to explain as fully as possible how to add code to
+libsndfile to allow the reading and writing of new file types. By new file
+type I particularly mean a new header type rather than a new encoding method
+for an existing file type.
+
+This HOWTO will take the form of a step by step guide. It will assume that you
+have all required tools including :
+
+- gcc
+- make (should really be the GNU version)
+- autoconf
+- automake
+- libtool
+
+These should all be available on the GNU ftp site: <ftp://ftp.gnu.org/pub/gnu/>.
+
+To help make these steps clearer let's suppose we are adding support for the
+Whacky file format whose files contain 'W','A','C' and 'K' as the first four
+bytes of the file format. Lets also assume that Whacky files contain PCM encoded
+data.
+
+## Step 1
+
+Create a new .c file in the src/ directory of the libsndfile source tree. The
+file name should be reasonable descriptive so that is is obvious that files of
+the new type are handled by this file. In this particular case the file might
+be named 'whacky.c'.
+
+## Step 2
+
+Add your new source code file to the build process.
+
+Edit the file src/Makefile.am and add the name of your file handler to the
+FILESPECIFIC list of handlers. This list looks something like this:  
+
+    FILESPECIFIC = aiff.c au.c au_g72x.c nist.c paf.c raw.c samplitude.c \
+                    svx.c wav.c wav_float.c wav_gsm610.c wav_ima_adpcm.c \
+                    wav_ms_adpcm.c
+
+Then, run the script named 'reconf' in the libsndfile top level directory,
+which will run autoconf and other associated tools. Finally run "./configure"
+in the top level directory. You may want to use the "--disable-gcc-opt" option
+to disable gcc optimisations and make debugging with gdb/ddd easier.
+
+## Step 3
+
+Add a unique identifier for the new file type.
+
+Edit src/sndfile.h and find the enum containing the SF_FORMAT_XXX identifiers.
+Since you will be adding a major file type you should add your identifier to the
+top part of the list where the values are above 0x10000 in value. The easiest
+way to do this is to find the largest value in the list, add 0x10000 to it and
+make that your new identifier value. The identifier should be something like
+SF_FORMAT_WACK.
+
+## Step 4
+
+Add code to the file type recogniser function.
+
+Edit src/sndfile.c and find the function guess_file_type (). This function
+reads the first 3 ints of the file and from that makes a guess at the file
+type. In our case we would add:
+
+    if (buffer [0] == MAKE_MARKER ('W','A','C','K'))
+        return SF_FORMAT_WACK ;
+
+The use of the MAKE_MARKER macro should be pretty obvious and it is defined at
+the top of file should you need to have a look at it.
+
+## Step 5
+
+Add a call to your open function from psf_open_file ().
+
+Edit src/sndfile.c and find the switch statement in psf_open_file (). It starts
+like this:
+
+    switch (filetype)
+    {   case SF_FORMAT_WAV :
+                error = wav_open (psf) ;
+                break ;
+
+        case SF_FORMAT_AIFF :
+                error = aiff_open (psf) ;
+                break ;
+
+Towards the bottom of this switch statement your should add one for the new file
+type. Something like:
+
+        case    SF_FORMAT_WACK :
+                sf_errno = whacky_open (psf) ;
+                break ;
+
+## Step 6
+
+Add prototypes for new open read and open write functions.
+
+Edit src/common.h, go to the bottom of the file and add something like
+
+    int     whacky_open   (SF_PRIVATE *psf) ;
+
+## Step 7
+
+Implement your open read function. The best way to do this is by coding
+something much like one of the other file formats. The file src/au.c might be a
+good place to start.
+
+In src/whacky.c you should now implement the function whacky_open() which
+was prototyped in src/common.h. This function should return 0 on success and
+a non-zero number on error.
+
+Error values are defined in src/common.h in a enum which starts at SFE_NO_ERROR.
+When adding a new error value, you also need to add an error string to the
+SndfileErrors array in src/sndfile.c.
+
+To parse the header of your new file type you should avoid using standard read/
+write/seek functions (and the fread/fwrite/fseek etc) and instead use
+psf_binheader_readf () which is implemented and documented in src/common.h.
+
+During the parsing process, you should also print logging information to
+libsndfile's internal log buffer using the psf_log_printf() function.
+
+At the end of the open read process, you should have set a number of fields in
+the SF_PRIVATE structure pointed to by psf.
+
+**THIS FILE IS INCOMPLETE**

extern/libsndfile-modified/docs/octave.md

@@ -0,0 +1,71 @@
+---
+layout: page
+---
+
+# libsndfile and GNU Octave
+
+[GNU Octave](http://www.octave.org/) is a high-level interactive language for
+numerical computations. There are currently two development streams, a stable
+2.0.X series and a development 2.1.X series. Octave reads and writes data in
+binary formats that were originally developed for
+[MATLAB](http://www.mathworks.com/). Version 2.0.X of Octave uses binary data
+files compatible with MATLAB version 4.2 while Octave 2.1.X uses binary data
+files compatible with MATLAB version 5.0 as well as being able to read the older
+MATLAB 4.2 format.
+
+From version 1.0.1 of libsndfile onwards, libsndfile has the ability of reading
+and writing a small subset of the binary data files used by both versions of GNU
+Octave. This gives people using GNU Octave for audio based work an easy method
+of moving audio data between GNU Octave and other programs which use libsndfile.
+
+For instance it is now possible to do the following:
+
+* Load a WAV file into a sound file editor such as
+  [Sweep](http://www.metadecks.org/software/sweep/).
+* Save it as a MAT4 file.
+* Load the data into Octave for manipulation.
+* Save the modified data.
+* Reload it in Sweep.
+
+Another example would be using the MAT4 or MAT5 file formats as a format which
+can be easily loaded into Octave for viewing/analyzing as well as a format which
+can be played with command line players such as the one included with
+libsndfile.
+
+## Details
+
+Octave, like most programming languages, uses variables to store data, and
+Octave variables can contain both arrays and matrices. It is also able to store
+one or more of these variables in a file. When reading Octave files, libsndfile
+expects a file to contain two variables and their associated data. The first
+variable should contain a variable holding the file sample rate while the second
+variable contains the audio data.
+
+For example, to generate a sine wave and store it as a binary file which is
+compatible with libsndfile, do the following:
+
+    octave:1 > samplerate = 44100 ;
+    octave:2 > wavedata = sin ((0:1023)*2*pi/1024) ;
+    octave:3 > save sine.mat samplerate wavedata
+
+The process of reading and writing files compatible with libsndfile can be made
+easier by use of two Octave script files:
+
+    octave:4 > [data fs] = sndfile_load ("sine.mat") ;
+    octave:5 > sndfile_save ("sine2.mat", data, fs) ;
+
+In addition, libsndfile contains a command line program which which is able to
+play the correct types of Octave files. Using this command line player
+**sndfile-play** and a third Octave script file allows Octave data to be played
+from within Octave on any of the platforms which **sndfile-play** supports (at
+the moment: Linux, MacOS X, Solaris and Win32).
+
+    octave:6 > sndfile_play (data, fs) ;
+
+These three Octave scripts are installed automatically in Octave's site script
+directory when libsndfile is installed (except on Win32) ie when libsndfile is
+being installed into /usr/local, the Octave scripts will be installed in
+/usr/local/share/octave/site/m/.
+
+There are some other Octave scripts for audio to be found
+[here](http://octave.sourceforge.net/audio/index.html).

extern/libsndfile-modified/docs/print.css

@@ -0,0 +1,14 @@
+body {
+	background:white;
+	color:black;
+}
+
+h1{
+	background:white;
+	color:black;
+}
+
+h2 {
+	background:white;
+	color:#666;
+}

extern/libsndfile-modified/docs/sndfile_info.md

@@ -0,0 +1,36 @@
+---
+layout: page
+title: sndfile-info
+---
+
+Here is an example of the output from the **sndfile-info** program
+distributed with libsndfile.
+
+This file was opened and parsed correctly but had been truncated so that
+the values in the **FORM** and **SSND** chunks were incorrect.
+
+```
+        erikd@hendrix > examples/sndfile-info truncated.aiff
+        truncated.aiff
+        size : 200000
+        FORM : 307474 (should be 199992)
+         AIFF
+         COMM : 18
+          Sample Rate : 16000
+          Samples     : 76857
+          Channels    : 2
+          Sample Size : 16
+         SSND : 307436 (should be 199946)
+          Offset     : 0
+          Block Size : 0
+
+        --------------------------------
+        Sample Rate : 16000
+        Frames      : 76857
+        Channels    : 2
+        Bit Width   : 16
+        Format      : 0x00020001
+        Sections    : 1
+        Seekable    : TRUE
+        Signal Max  : 32766
+```

extern/libsndfile-modified/docs/tutorial.md

@@ -0,0 +1,10 @@
+---
+layout: page
+---
+
+# libsndfile Tutorial
+
+**More coming soon.**
+
+For now, the best place to look for example code is the `examples/` directory of the source code distribution and the
+libsndfile test suite which is located in the `tests/` directory of the source code distribution.

extern/libsndfile-modified/docs/win32.md

@@ -0,0 +1,18 @@
+---
+layout: page
+---
+
+# Building libsndfile on Win32
+
+**Note : For pre-compiled binaries for windows, both for win32 and win64, see
+the main web page.**
+
+There are currently two build systems; the official GNU autotool based one and
+a more limited and experimental CMake based build system.
+
+libsndfile is written to be compiled by a compiler which supports large chunks
+of the 1999 ISO C Standard (tested with GCC, Clang and Visual Studio 2015).
+
+It is recommended to use CMake and Visual Studio to build libsndfile on Windows
+but you can try the [MinGW](http://www.mingw.org/) compiler suite with Autotools
+or CMake buildsystem.

extern/libsndfile-modified/examples/generate.c

@@ -0,0 +1,131 @@
+/*
+** Copyright (C) 2002-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** All rights reserved.
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in
+**       the documentation and/or other materials provided with the
+**       distribution.
+**     * Neither the author nor the names of any contributors may be used
+**       to endorse or promote products derived from this software without
+**       specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#include <sndfile.h>
+
+#define	BUFFER_LEN			4096
+
+static void encode_file (const char *infilename, const char *outfilename, int filetype) ;
+
+int
+main (int argc, char **argv)
+{
+	if (argc != 2)
+	{	puts ("\nEncode a single input file into a number of different output ") ;
+		puts ("encodings. These output encodings can then be moved to another ") ;
+		puts ("OS for testing.\n") ;
+		puts ("    Usage : generate <filename>\n") ;
+		exit (1) ;
+		} ;
+
+	/* A couple of standard WAV files. Make sure Win32 plays these. */
+	encode_file (argv [1], "pcmu8.wav"	, SF_FORMAT_WAV | SF_FORMAT_PCM_U8) ;
+	encode_file (argv [1], "pcm16.wav"	, SF_FORMAT_WAV | SF_FORMAT_PCM_16) ;
+	encode_file (argv [1], "imaadpcm.wav", SF_FORMAT_WAV | SF_FORMAT_MS_ADPCM) ;
+	encode_file (argv [1], "msadpcm.wav", SF_FORMAT_WAV | SF_FORMAT_IMA_ADPCM) ;
+	encode_file (argv [1], "gsm610.wav"	, SF_FORMAT_WAV | SF_FORMAT_GSM610) ;
+
+	/* Soundforge W64. */
+	encode_file (argv [1], "pcmu8.w64"	, SF_FORMAT_W64 | SF_FORMAT_PCM_U8) ;
+	encode_file (argv [1], "pcm16.w64"	, SF_FORMAT_W64 | SF_FORMAT_PCM_16) ;
+	encode_file (argv [1], "imaadpcm.w64", SF_FORMAT_W64 | SF_FORMAT_MS_ADPCM) ;
+	encode_file (argv [1], "msadpcm.w64", SF_FORMAT_W64 | SF_FORMAT_IMA_ADPCM) ;
+	encode_file (argv [1], "gsm610.w64"	, SF_FORMAT_W64 | SF_FORMAT_GSM610) ;
+
+	return 0 ;
+} /* main */
+
+/*============================================================================================
+**	Helper functions and macros.
+*/
+
+#define PUT_DOTS(k)					\
+			{	while (k--)			\
+					putchar ('.') ;	\
+				putchar (' ') ;		\
+				}
+
+/*========================================================================================
+*/
+
+static void
+encode_file (const char *infilename, const char *outfilename, int filetype)
+{	static float buffer [BUFFER_LEN] ;
+
+	SNDFILE		*infile, *outfile ;
+	SF_INFO		sfinfo ;
+	int			k, readcount ;
+
+	printf ("    %s -> %s ", infilename, outfilename) ;
+	fflush (stdout) ;
+
+	k = 16 - strlen (outfilename) ;
+	PUT_DOTS (k) ;
+
+	memset (&sfinfo, 0, sizeof (sfinfo)) ;
+
+	if (! (infile = sf_open (infilename, SFM_READ, &sfinfo)))
+	{	printf ("Error : could not open file : %s\n", infilename) ;
+		puts (sf_strerror (NULL)) ;
+		exit (1) ;
+		}
+
+	sfinfo.format = filetype ;
+
+	if (! sf_format_check (&sfinfo))
+	{	sf_close (infile) ;
+		printf ("Invalid encoding\n") ;
+		return ;
+		} ;
+
+	if (! (outfile = sf_open (outfilename, SFM_WRITE, &sfinfo)))
+	{	printf ("Error : could not open file : %s\n", outfilename) ;
+		puts (sf_strerror (NULL)) ;
+		exit (1) ;
+		} ;
+
+	while ((readcount = (int) sf_read_float (infile, buffer, BUFFER_LEN)) > 0)
+		sf_write_float (outfile, buffer, readcount) ;
+
+	sf_close (infile) ;
+	sf_close (outfile) ;
+
+	printf ("ok\n") ;
+
+	return ;
+} /* encode_file */
+

extern/libsndfile-modified/examples/generate.cs

@@ -0,0 +1,250 @@
+/* (c) 2004 James Robson, http://www.arbingersys.com
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+**
+** ****************************
+**
+** How to use:
+**    - libsndfile.dll must have already been compiled and be in this
+**      application's search path
+**
+**    - You must edit this file to point to the file you want to convert. Set
+**    	the following line of code (found in the Main() function further below)
+**    	to the name of a .WAV file that exists on your system.
+**		186:	string sfn = "input.wav";
+**
+**    - From a command prompt type
+**    		csc generate.cs
+**
+**    - Run the resulting executable 'generate.exe'
+**
+**
+** Note: You will obviously need the csc compiler and the .NET runtime. I think
+** 	 these are freely available for download from Microsoft's website
+** 	 (part of the .NET SDK?).
+*/
+
+
+using System;
+using System.Runtime.InteropServices;
+using sf_count_t = System.Int64;	//alias; see SF_INFO struct
+
+#if PLATFORM_64
+using size_t = System.UInt64;
+#else
+using size_t = System.UInt32;
+#endif
+
+
+class lsndf_example {
+
+
+//sound file formats
+	public enum lsndf_frmts {
+		SF_FORMAT_WAV			= 0x010000,		/* Microsoft WAV format (little endian). */
+		SF_FORMAT_AIFF			= 0x020000,		/* Apple/SGI AIFF format (big endian). */
+		SF_FORMAT_AU			= 0x030000,		/* Sun/NeXT AU format (big endian). */
+		SF_FORMAT_RAW			= 0x040000,		/* RAW PCM data. */
+		SF_FORMAT_PAF			= 0x050000,		/* Ensoniq PARIS file format. */
+		SF_FORMAT_SVX			= 0x060000,		/* Amiga IFF / SVX8 / SV16 format. */
+		SF_FORMAT_NIST			= 0x070000,		/* Sphere NIST format. */
+		SF_FORMAT_VOC			= 0x080000,		/* VOC files. */
+		SF_FORMAT_IRCAM			= 0x0A0000,		/* Berkeley/IRCAM/CARL */
+		SF_FORMAT_W64			= 0x0B0000,		/* Sonic Foundry's 64 bit RIFF/WAV */
+		SF_FORMAT_MAT4			= 0x0C0000,		/* Matlab (tm) V4.2 / GNU Octave 2.0 */
+		SF_FORMAT_MAT5			= 0x0D0000,		/* Matlab (tm) V5.0 / GNU Octave 2.1 */
+		SF_FORMAT_PVF			= 0x0E0000,		/* Portable Voice Format */
+		SF_FORMAT_XI			= 0x0F0000,		/* Fasttracker 2 Extended Instrument */
+		SF_FORMAT_HTK			= 0x100000,		/* HMM Tool Kit format */
+		SF_FORMAT_SDS			= 0x110000,		/* Midi Sample Dump Standard */
+
+		/* Subtypes from here on. */
+
+		SF_FORMAT_PCM_S8		= 0x0001,		/* Signed 8 bit data */
+		SF_FORMAT_PCM_16		= 0x0002,		/* Signed 16 bit data */
+		SF_FORMAT_PCM_24		= 0x0003,		/* Signed 24 bit data */
+		SF_FORMAT_PCM_32		= 0x0004,		/* Signed 32 bit data */
+
+		SF_FORMAT_PCM_U8		= 0x0005,		/* Unsigned 8 bit data (WAV and RAW only) */
+
+		SF_FORMAT_FLOAT			= 0x0006,		/* 32 bit float data */
+		SF_FORMAT_DOUBLE		= 0x0007,		/* 64 bit float data */
+
+		SF_FORMAT_ULAW			= 0x0010,		/* U-Law encoded. */
+		SF_FORMAT_ALAW			= 0x0011,		/* A-Law encoded. */
+		SF_FORMAT_IMA_ADPCM		= 0x0012,		/* IMA ADPCM. */
+		SF_FORMAT_MS_ADPCM		= 0x0013,		/* Microsoft ADPCM. */
+
+		SF_FORMAT_GSM610		= 0x0020,		/* GSM 6.10 encoding. */
+		SF_FORMAT_VOX_ADPCM		= 0x0021,		/* OKI / Dialogix ADPCM */
+
+		SF_FORMAT_G721_32		= 0x0030,		/* 32kbs G721 ADPCM encoding. */
+		SF_FORMAT_G723_24		= 0x0031,		/* 24kbs G723 ADPCM encoding. */
+		SF_FORMAT_G723_40		= 0x0032,		/* 40kbs G723 ADPCM encoding. */
+
+		SF_FORMAT_DWVW_12		= 0x0040, 		/* 12 bit Delta Width Variable Word encoding. */
+		SF_FORMAT_DWVW_16		= 0x0041, 		/* 16 bit Delta Width Variable Word encoding. */
+		SF_FORMAT_DWVW_24		= 0x0042, 		/* 24 bit Delta Width Variable Word encoding. */
+		SF_FORMAT_DWVW_N		= 0x0043, 		/* N bit Delta Width Variable Word encoding. */
+
+		SF_FORMAT_DPCM_8		= 0x0050,		/* 8 bit differential PCM (XI only) */
+		SF_FORMAT_DPCM_16		= 0x0051,		/* 16 bit differential PCM (XI only) */
+
+
+		/* Endian-ness options. */
+
+		SF_ENDIAN_FILE			= 0x00000000,	/* Default file endian-ness. */
+		SF_ENDIAN_LITTLE		= 0x10000000,	/* Force little endian-ness. */
+		SF_ENDIAN_BIG			= 0x20000000,	/* Force big endian-ness. */
+		SF_ENDIAN_CPU			= 0x30000000,	/* Force CPU endian-ness. */
+
+		SF_FORMAT_SUBMASK		= 0x0000FFFF,
+		SF_FORMAT_TYPEMASK		= 0x0FFF0000,
+		SF_FORMAT_ENDMASK		= 0x30000000
+	}
+
+
+//modes and other
+	public enum lsndf_tf
+	{	/* True and false */
+		SF_FALSE	= 0,
+		SF_TRUE		= 1,
+
+		/* Modes for opening files. */
+		SFM_READ	= 0x10,
+		SFM_WRITE	= 0x20,
+		SFM_RDWR	= 0x30
+	}
+
+
+//important SF_INFO structure
+	[StructLayout(LayoutKind.Sequential)]
+	public struct SF_INFO
+	{
+		public sf_count_t	frames ;		// Used to be called samples.  Changed to avoid confusion.
+		public int			samplerate ;
+		public int			channels ;
+		public int			format ;
+		public int			sections ;
+		public int			seekable ;
+	};
+
+
+//function declarations
+//Note: Not all functions have been prototyped here. Only the ones necessary to
+//	make this application work. The below code should give some clues as to
+//	how to add the rest since they have a lot of parameter and return type
+//	similarities.
+	[DllImport("libsndfile.dll")]
+	public static extern IntPtr sf_open ([MarshalAs(UnmanagedType.LPStr)] string path, int mode, ref SF_INFO sfinfo);
+
+	[DllImport("libsndfile.dll")]
+	static extern int sf_error (IntPtr sndfile);
+
+	[DllImport("libsndfile.dll")]
+	static extern IntPtr sf_strerror (IntPtr sndfile);
+
+	[DllImport("libsndfile.dll")]
+	static extern int sf_format_check (ref SF_INFO info);
+
+	[DllImport("libsndfile.dll")]
+	static extern sf_count_t sf_read_float	(IntPtr sndfile, float[] ptr, sf_count_t items);
+
+	[DllImport("libsndfile.dll")]
+	static extern sf_count_t sf_write_float	(IntPtr sndfile, float[] ptr, sf_count_t items);
+
+	[DllImport("libsndfile.dll")]
+    static extern int sf_close (IntPtr sndfile);
+
+
+	public const sf_count_t BUFFER_LEN = 4096;
+
+
+//program entry
+	static void Main(  ) {
+
+
+//declarations
+		SF_INFO sfinfo = new SF_INFO();
+		float[] buffer = new float[BUFFER_LEN];
+		sf_count_t rcnt;
+
+//set the input file
+		string sfn = "input.wav";	//set to a file on YOUR system
+		//string sfn = "noexist.wav"; 	//test with non-existent file
+
+//set the output file
+		string ofn = "output.wav";
+
+//read in sound file to convert
+		IntPtr infile = sf_open (sfn, (int)lsndf_tf.SFM_READ, ref sfinfo);
+
+//exit if error was thrown
+		if ( (int)infile == 0 ) {
+			Console.WriteLine("Error opening " + sfn);
+			Console.WriteLine("Error #" + sf_error(infile));
+			return;
+		}
+
+//set the file type for the output file
+//uncomment one and only one of the statements below to change the output
+//file encoding.
+		//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_WAV | lsndf_frmts.SF_FORMAT_PCM_U8);
+		//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_WAV | lsndf_frmts.SF_FORMAT_PCM_16);
+		//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_WAV | lsndf_frmts.SF_FORMAT_MS_ADPCM);
+		sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_WAV | lsndf_frmts.SF_FORMAT_IMA_ADPCM);
+		//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_WAV | lsndf_frmts.SF_FORMAT_GSM610);
+		/* Soundforge W64. */
+		//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_W64 | lsndf_frmts.SF_FORMAT_PCM_U8);
+		//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_W64 | lsndf_frmts.SF_FORMAT_PCM_16);
+		//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_W64 | lsndf_frmts.SF_FORMAT_MS_ADPCM);
+		//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_W64 | lsndf_frmts.SF_FORMAT_IMA_ADPCM);
+		//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_W64 | lsndf_frmts.SF_FORMAT_GSM610);
+
+
+//check that SF_INFO is valid
+		if ( sf_format_check(ref sfinfo) == 0 ) {
+			Console.WriteLine("sf_format_check failed. Invalid encoding");
+			return;
+		}
+
+//open output file
+		IntPtr outfile = sf_open (ofn, (int)lsndf_tf.SFM_WRITE, ref sfinfo);
+
+//exit if error was thrown
+		if ( (int)outfile == 0 ) {
+			Console.WriteLine("Error opening " + ofn);
+			Console.WriteLine("Error #" + sf_error(outfile));
+			return;
+		}
+
+//infile -> outfile
+		Console.Write(sfn + " -> " + ofn);
+		while ( (rcnt = sf_read_float (infile, buffer, BUFFER_LEN)) > 0) {
+			Console.Write(".");
+			sf_write_float (outfile, buffer, BUFFER_LEN);
+		}
+		Console.WriteLine("done.");
+
+//close up shop
+		sf_close(infile);
+		sf_close(outfile);
+
+
+	} //main()
+
+
+} //class lsndf_example {}
+

extern/libsndfile-modified/examples/list_formats.c

@@ -0,0 +1,76 @@
+/*
+** Copyright (C) 2001-2014 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** All rights reserved.
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in
+**       the documentation and/or other materials provided with the
+**       distribution.
+**     * Neither the author nor the names of any contributors may be used
+**       to endorse or promote products derived from this software without
+**       specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include	<stdio.h>
+#include	<stdlib.h>
+#include	<string.h>
+#include	<math.h>
+
+#include	<sndfile.h>
+
+int
+main (void)
+{	SF_FORMAT_INFO	info ;
+	SF_INFO 		sfinfo ;
+	int format, major_count, subtype_count, m, s ;
+
+	memset (&sfinfo, 0, sizeof (sfinfo)) ;
+	printf ("Version : %s\n\n", sf_version_string ()) ;
+
+	sf_command (NULL, SFC_GET_FORMAT_MAJOR_COUNT, &major_count, sizeof (int)) ;
+	sf_command (NULL, SFC_GET_FORMAT_SUBTYPE_COUNT, &subtype_count, sizeof (int)) ;
+
+	sfinfo.channels = 1 ;
+	for (m = 0 ; m < major_count ; m++)
+	{	info.format = m ;
+		sf_command (NULL, SFC_GET_FORMAT_MAJOR, &info, sizeof (info)) ;
+		printf ("%s  (extension \"%s\")\n", info.name, info.extension) ;
+
+		format = info.format ;
+
+		for (s = 0 ; s < subtype_count ; s++)
+		{	info.format = s ;
+			sf_command (NULL, SFC_GET_FORMAT_SUBTYPE, &info, sizeof (info)) ;
+
+			format = (format & SF_FORMAT_TYPEMASK) | info.format ;
+
+			sfinfo.format = format ;
+			if (sf_format_check (&sfinfo))
+				printf ("   %s\n", info.name) ;
+			} ;
+		puts ("") ;
+		} ;
+	puts ("") ;
+
+	return 0 ;
+} /* main */
+

extern/libsndfile-modified/examples/make_sine.c

@@ -0,0 +1,100 @@
+/*
+** Copyright (C) 1999-2012 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** All rights reserved.
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in
+**       the documentation and/or other materials provided with the
+**       distribution.
+**     * Neither the author nor the names of any contributors may be used
+**       to endorse or promote products derived from this software without
+**       specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include	<stdio.h>
+#include	<stdlib.h>
+#include	<string.h>
+#include	<math.h>
+
+#include	<sndfile.h>
+
+#ifndef		M_PI
+#define		M_PI		3.14159265358979323846264338
+#endif
+
+#define		SAMPLE_RATE			44100
+#define		SAMPLE_COUNT		(SAMPLE_RATE * 4)	/* 4 seconds */
+#define		AMPLITUDE			(1.0 * 0x7F000000)
+#define		LEFT_FREQ			(344.0 / SAMPLE_RATE)
+#define		RIGHT_FREQ			(466.0 / SAMPLE_RATE)
+
+int
+main (void)
+{	SNDFILE	*file ;
+	SF_INFO	sfinfo ;
+	int		k ;
+	int	*buffer ;
+
+	if (! (buffer = malloc (2 * SAMPLE_COUNT * sizeof (int))))
+	{	printf ("Error : Malloc failed.\n") ;
+		return 1 ;
+		} ;
+
+	memset (&sfinfo, 0, sizeof (sfinfo)) ;
+
+	sfinfo.samplerate	= SAMPLE_RATE ;
+	sfinfo.frames		= SAMPLE_COUNT ;
+	sfinfo.channels		= 2 ;
+	sfinfo.format		= (SF_FORMAT_WAV | SF_FORMAT_PCM_24) ;
+
+	if (! (file = sf_open ("sine.wav", SFM_WRITE, &sfinfo)))
+	{	printf ("Error : Not able to open output file.\n") ;
+		free (buffer) ;
+		return 1 ;
+		} ;
+
+	if (sfinfo.channels == 1)
+	{	for (k = 0 ; k < SAMPLE_COUNT ; k++)
+			buffer [k] = (int) (AMPLITUDE * sin (LEFT_FREQ * 2 * k * M_PI)) ;
+		}
+	else if (sfinfo.channels == 2)
+	{	for (k = 0 ; k < SAMPLE_COUNT ; k++)
+		{	buffer [2 * k] = (int) (AMPLITUDE * sin (LEFT_FREQ * 2 * k * M_PI)) ;
+			buffer [2 * k + 1] = (int) (AMPLITUDE * sin (RIGHT_FREQ * 2 * k * M_PI)) ;
+			} ;
+		}
+	else
+	{	printf ("Error : make_sine can only generate mono or stereo files.\n") ;
+		sf_close (file) ;
+		free (buffer) ;
+		return 1 ;
+		} ;
+
+	if (sf_write_int (file, buffer, sfinfo.channels * SAMPLE_COUNT) !=
+											sfinfo.channels * SAMPLE_COUNT)
+		puts (sf_strerror (file)) ;
+
+	sf_close (file) ;
+	free (buffer) ;
+	return 0 ;
+} /* main */
+

extern/libsndfile-modified/examples/sfprocess.c

@@ -0,0 +1,144 @@
+/*
+** Copyright (C) 2001-2013 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** All rights reserved.
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**
+**	 * Redistributions of source code must retain the above copyright
+**	   notice, this list of conditions and the following disclaimer.
+**	 * Redistributions in binary form must reproduce the above copyright
+**	   notice, this list of conditions and the following disclaimer in
+**	   the documentation and/or other materials provided with the
+**	   distribution.
+**	 * Neither the author nor the names of any contributors may be used
+**	   to endorse or promote products derived from this software without
+**	   specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include	<stdio.h>
+#include	<string.h>
+
+/* Include this header file to use functions from libsndfile. */
+#include	<sndfile.h>
+
+/*	This will be the length of the buffer used to hold.frames while
+**	we process them.
+*/
+#define		BUFFER_LEN	1024
+
+/* libsndfile can handle more than 6 channels but we'll restrict it to 6. */
+#define		MAX_CHANNELS	6
+
+/* Function prototype. */
+static void process_data (double *data, int count, int channels) ;
+
+
+int
+main (void)
+{	/* This is a buffer of double precision floating point values
+	** which will hold our data while we process it.
+	*/
+	static double data [BUFFER_LEN] ;
+
+	/* A SNDFILE is very much like a FILE in the Standard C library. The
+	** sf_open function return an SNDFILE* pointer when they sucessfully
+	** open the specified file.
+	*/
+	SNDFILE	*infile, *outfile ;
+
+	/* A pointer to an SF_INFO struct is passed to sf_open.
+	** On read, the library fills this struct with information about the file.
+	** On write, the struct must be filled in before calling sf_open.
+	*/
+	SF_INFO		sfinfo ;
+	int			readcount ;
+	const char	*infilename = "input.wav" ;
+	const char	*outfilename = "output.wav" ;
+
+	/* The SF_INFO struct must be initialized before using it.
+	*/
+	memset (&sfinfo, 0, sizeof (sfinfo)) ;
+
+	/* Here's where we open the input file. We pass sf_open the file name and
+	** a pointer to an SF_INFO struct.
+	** On successful open, sf_open returns a SNDFILE* pointer which is used
+	** for all subsequent operations on that file.
+	** If an error occurs during sf_open, the function returns a NULL pointer.
+	**
+	** If you are trying to open a raw headerless file you will need to set the
+	** format and channels fields of sfinfo before calling sf_open(). For
+	** instance to open a raw 16 bit stereo PCM file you would need the following
+	** two lines:
+	**
+	**		sfinfo.format   = SF_FORMAT_RAW | SF_FORMAT_PCM_16 ;
+	**		sfinfo.channels = 2 ;
+	*/
+	if (! (infile = sf_open (infilename, SFM_READ, &sfinfo)))
+	{	/* Open failed so print an error message. */
+		printf ("Not able to open input file %s.\n", infilename) ;
+		/* Print the error message from libsndfile. */
+		puts (sf_strerror (NULL)) ;
+		return 1 ;
+		} ;
+
+	if (sfinfo.channels > MAX_CHANNELS)
+	{	printf ("Not able to process more than %d channels\n", MAX_CHANNELS) ;
+		sf_close (infile) ;
+		return 1 ;
+		} ;
+	/* Open the output file. */
+	if (! (outfile = sf_open (outfilename, SFM_WRITE, &sfinfo)))
+	{	printf ("Not able to open output file %s.\n", outfilename) ;
+		puts (sf_strerror (NULL)) ;
+		sf_close (infile) ;
+		return 1 ;
+		} ;
+
+	/* While there are.frames in the input file, read them, process
+	** them and write them to the output file.
+	*/
+	while ((readcount = (int) sf_read_double (infile, data, BUFFER_LEN)))
+	{	process_data (data, readcount, sfinfo.channels) ;
+		sf_write_double (outfile, data, readcount) ;
+		} ;
+
+	/* Close input and output files. */
+	sf_close (infile) ;
+	sf_close (outfile) ;
+
+	return 0 ;
+} /* main */
+
+static void
+process_data (double *data, int count, int channels)
+{	double channel_gain [MAX_CHANNELS] = { 0.5, 0.8, 0.1, 0.4, 0.4, 0.9 } ;
+	int k, chan ;
+
+	/* Process the data here.
+	** If the soundfile contains more then 1 channel you need to take care of
+	** the data interleaving youself.
+	** Current we just apply a channel dependant gain.
+	*/
+
+	for (chan = 0 ; chan < channels ; chan ++)
+		for (k = chan ; k < count ; k+= channels)
+			data [k] *= channel_gain [chan] ;
+
+	return ;
+} /* process_data */
+

extern/libsndfile-modified/examples/sndfile-loopify.c

@@ -0,0 +1,175 @@
+/*
+** Copyright (C) 1999-2015 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** All rights reserved.
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in
+**       the documentation and/or other materials provided with the
+**       distribution.
+**     * Neither the author nor the names of any contributors may be used
+**       to endorse or promote products derived from this software without
+**       specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/*
+** A quick/rough hack to add SF_INSTRUMENT data to a file. It compiles, but
+** no guarantees beyond that. Happy to receive patches to fix/improve it.
+**
+** Code for this was stolen from programs/sndfile-convert.c and related code.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+#include <sndfile.h>
+
+#define BUFFER_LEN		(1 << 14)
+
+const char * program_name (const char * argv0) ;
+static void sfe_copy_data_int (SNDFILE *outfile, SNDFILE *infile, int channels) ;
+static void add_instrument_data (SNDFILE *outfile, const SF_INFO * in_info) ;
+
+static void
+usage_exit (const char *progname)
+{
+	printf ("\nUsage : %s <input file> <output file>\n", progname) ;
+	puts ("") ;
+	exit (1) ;
+} /* usage_exit */
+
+int
+main (int argc, char * argv [])
+{	const char	*progname, *infilename, *outfilename ;
+	SNDFILE		*infile = NULL, *outfile = NULL ;
+	SF_INFO		in_sfinfo, out_sfinfo ;
+
+	progname = program_name (argv [0]) ;
+
+	if (argc < 3 || argc > 5)
+		usage_exit (progname) ;
+
+	infilename = argv [argc-2] ;
+	outfilename = argv [argc-1] ;
+
+	if (strcmp (infilename, outfilename) == 0)
+	{	printf ("Error : Input and output filenames are the same.\n\n") ;
+		usage_exit (progname) ;
+		} ;
+
+	if (strlen (infilename) > 1 && infilename [0] == '-')
+	{	printf ("Error : Input filename (%s) looks like an option.\n\n", infilename) ;
+		usage_exit (progname) ;
+		} ;
+
+	if (outfilename [0] == '-')
+	{	printf ("Error : Output filename (%s) looks like an option.\n\n", outfilename) ;
+		usage_exit (progname) ;
+		} ;
+
+	memset (&in_sfinfo, 0, sizeof (in_sfinfo)) ;
+
+	if ((infile = sf_open (infilename, SFM_READ, &in_sfinfo)) == NULL)
+	{	printf ("Not able to open input file %s.\n", infilename) ;
+		puts (sf_strerror (NULL)) ;
+		return 1 ;
+		} ;
+
+	memcpy (&out_sfinfo, &in_sfinfo, sizeof (out_sfinfo)) ;
+	/* Open the output file. */
+	if ((outfile = sf_open (outfilename, SFM_WRITE, &out_sfinfo)) == NULL)
+	{	printf ("Not able to open output file %s : %s\n", outfilename, sf_strerror (NULL)) ;
+		sf_close (infile) ;
+		return 1 ;
+		} ;
+
+	/* Add the loop data */
+	add_instrument_data (outfile, &in_sfinfo) ;
+
+	/* Copy the audio data */
+	sfe_copy_data_int (outfile, infile, in_sfinfo.channels) ;
+
+	sf_close (infile) ;
+	sf_close (outfile) ;
+
+	return 0 ;
+} /* main */
+
+const char *
+program_name (const char * argv0)
+{	const char * tmp ;
+
+	tmp = strrchr (argv0, '/') ;
+	argv0 = tmp ? tmp + 1 : argv0 ;
+
+	/* Remove leading libtool name mangling. */
+	if (strstr (argv0, "lt-") == argv0)
+		return argv0 + 3 ;
+
+	return argv0 ;
+} /* program_name */
+
+static void
+sfe_copy_data_int (SNDFILE *outfile, SNDFILE *infile, int channels)
+{	static int	data [BUFFER_LEN] ;
+	int		frames, readcount ;
+
+	frames = BUFFER_LEN / channels ;
+	readcount = frames ;
+
+	while (readcount > 0)
+	{	readcount = (int) sf_readf_int (infile, data, frames) ;
+		sf_writef_int (outfile, data, readcount) ;
+		} ;
+
+	return ;
+} /* sfe_copy_data_int */
+
+static void
+add_instrument_data (SNDFILE *file, const SF_INFO *info)
+{	SF_INSTRUMENT instr ;
+
+	memset (&instr, 0, sizeof (instr)) ;
+
+	instr.gain = 1 ;
+	instr.basenote = 0 ;
+	instr.detune = 0 ;
+	instr.velocity_lo = 0 ;
+	instr.velocity_hi = 0 ;
+	instr.key_lo = 0 ;
+	instr.key_hi = 0 ;
+	instr.loop_count = 1 ;
+
+	instr.loops [0].mode = SF_LOOP_FORWARD ;
+	instr.loops [0].start = 0 ;
+	instr.loops [0].end = info->frames ;
+	instr.loops [0].count = 0 ;
+
+	if (sf_command (file, SFC_SET_INSTRUMENT, &instr, sizeof (instr)) == SF_FALSE)
+	{	printf ("\n\nLine %d : sf_command (SFC_SET_INSTRUMENT) failed.\n\n", __LINE__) ;
+		exit (1) ;
+		} ;
+
+	return ;
+} /* add_instrument_data */
+

extern/libsndfile-modified/examples/sndfile-to-text.c

@@ -0,0 +1,168 @@
+/*
+** Copyright (C) 2008-2016 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** All rights reserved.
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in
+**       the documentation and/or other materials provided with the
+**       distribution.
+**     * Neither the author nor the names of any contributors may be used
+**       to endorse or promote products derived from this software without
+**       specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <float.h>
+
+#include <sndfile.h>
+
+#define	BLOCK_SIZE 4096
+
+#ifdef DBL_DECIMAL_DIG
+	#define OP_DBL_Digs (DBL_DECIMAL_DIG)
+#else
+	#ifdef DECIMAL_DIG
+		#define OP_DBL_Digs (DECIMAL_DIG)
+	#else
+		#define OP_DBL_Digs (DBL_DIG + 3)
+	#endif
+#endif
+
+static void
+print_usage (char *progname)
+{	printf ("\nUsage : %s [--full-precision] <input file> <output file>\n", progname) ;
+	puts ("\n"
+		"    Where the output file will contain a line for each frame\n"
+		"    and a column for each channel.\n"
+		) ;
+
+} /* print_usage */
+
+static int
+convert_to_text (SNDFILE * infile, FILE * outfile, int channels, int full_precision)
+{	float *buf ;
+	sf_count_t frames ;
+	int k, m, readcount ;
+
+	buf = malloc (BLOCK_SIZE * sizeof (float)) ;
+	if (buf == NULL)
+	{	printf ("Error : Out of memory.\n\n") ;
+		return 1 ;
+		} ;
+
+	frames = BLOCK_SIZE / channels ;
+
+	while ((readcount = (int) sf_readf_float (infile, buf, frames)) > 0)
+	{	for (k = 0 ; k < readcount ; k++)
+		{	for (m = 0 ; m < channels ; m++)
+				if (full_precision)
+					fprintf (outfile, " %.*e", OP_DBL_Digs - 1, buf [k * channels + m]) ;
+				else
+					fprintf (outfile, " % 12.10f", buf [k * channels + m]) ;
+			fprintf (outfile, "\n") ;
+			} ;
+		} ;
+
+	free (buf) ;
+
+	return 0 ;
+} /* convert_to_text */
+
+int
+main (int argc, char * argv [])
+{	char 		*progname, *infilename, *outfilename ;
+	SNDFILE		*infile = NULL ;
+	FILE		*outfile = NULL ;
+	SF_INFO		sfinfo ;
+	int		full_precision = 0 ;
+	int 	ret = 1 ;
+
+	progname = strrchr (argv [0], '/') ;
+	progname = progname ? progname + 1 : argv [0] ;
+
+	switch (argc)
+	{	case 4 :
+			if (!strcmp ("--full-precision", argv [3]))
+			{	print_usage (progname) ;
+				goto cleanup ;
+				} ;
+			full_precision = 1 ;
+			argv++ ;
+		case 3 :
+			break ;
+		default:
+			print_usage (progname) ;
+			goto cleanup ;
+		} ;
+
+	infilename = argv [1] ;
+	outfilename = argv [2] ;
+
+	if (strcmp (infilename, outfilename) == 0)
+	{	printf ("Error : Input and output filenames are the same.\n\n") ;
+		print_usage (progname) ;
+		goto cleanup ;
+		} ;
+
+	if (infilename [0] == '-')
+	{	printf ("Error : Input filename (%s) looks like an option.\n\n", infilename) ;
+		print_usage (progname) ;
+		goto cleanup ;
+		} ;
+
+	if (outfilename [0] == '-')
+	{	printf ("Error : Output filename (%s) looks like an option.\n\n", outfilename) ;
+		print_usage (progname) ;
+		goto cleanup ;
+		} ;
+
+	memset (&sfinfo, 0, sizeof (sfinfo)) ;
+
+	if ((infile = sf_open (infilename, SFM_READ, &sfinfo)) == NULL)
+	{	printf ("Not able to open input file %s.\n", infilename) ;
+		puts (sf_strerror (NULL)) ;
+		goto cleanup ;
+		} ;
+
+	/* Open the output file. */
+	if ((outfile = fopen (outfilename, "w")) == NULL)
+	{	printf ("Not able to open output file %s : %s\n", outfilename, sf_strerror (NULL)) ;
+		goto cleanup ;
+		} ;
+
+	fprintf (outfile, "# Converted from file %s.\n", infilename) ;
+	fprintf (outfile, "# Channels %d, Sample rate %d\n", sfinfo.channels, sfinfo.samplerate) ;
+
+	ret = convert_to_text (infile, outfile, sfinfo.channels, full_precision) ;
+
+cleanup :
+
+	sf_close (infile) ;
+	if (outfile != NULL)
+		fclose (outfile) ;
+
+	return ret ;
+} /* main */
+

extern/libsndfile-modified/examples/sndfilehandle.cc

@@ -0,0 +1,84 @@
+/*
+** Copyright (C) 2007-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+
+#include	<cstdio>
+#include	<cstring>
+
+#include	<sndfile.hh>
+
+#define		BUFFER_LEN		1024
+
+static void
+create_file (const char * fname, int format)
+{	static short buffer [BUFFER_LEN] ;
+
+	SndfileHandle file ;
+	int channels = 2 ;
+	int srate = 48000 ;
+
+	printf ("Creating file named '%s'\n", fname) ;
+
+	file = SndfileHandle (fname, SFM_WRITE, format, channels, srate) ;
+
+	memset (buffer, 0, sizeof (buffer)) ;
+
+	file.write (buffer, BUFFER_LEN) ;
+
+	puts ("") ;
+	/*
+	**	The SndfileHandle object will automatically close the file and
+	**	release all allocated memory when the object goes out of scope.
+	**	This is the Resource Acquisition Is Initailization idom.
+	**	See : http://en.wikipedia.org/wiki/Resource_Acquisition_Is_Initialization
+	*/
+} /* create_file */
+
+static void
+read_file (const char * fname)
+{	static short buffer [BUFFER_LEN] ;
+
+	SndfileHandle file ;
+
+	file = SndfileHandle (fname) ;
+
+	printf ("Opened file '%s'\n", fname) ;
+	printf ("    Sample rate : %d\n", file.samplerate ()) ;
+	printf ("    Channels    : %d\n", file.channels ()) ;
+
+	file.read (buffer, BUFFER_LEN) ;
+
+	puts ("") ;
+
+	/* RAII takes care of destroying SndfileHandle object. */
+} /* read_file */
+
+int
+main (void)
+{	const char * fname = "test.wav" ;
+
+	puts ("\nSimple example showing usage of the C++ SndfileHandle object.\n") ;
+
+	create_file (fname, SF_FORMAT_WAV | SF_FORMAT_PCM_16) ;
+
+	read_file (fname) ;
+
+	puts ("Done.\n") ;
+	return 0 ;
+} /* main */
+
+

extern/libsndfile-modified/include/sndfile.hh

@@ -0,0 +1,484 @@
+/*
+** Copyright (C) 2005-2017 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** All rights reserved.
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in
+**       the documentation and/or other materials provided with the
+**       distribution.
+**     * Neither the author nor the names of any contributors may be used
+**       to endorse or promote products derived from this software without
+**       specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/*
+** The above modified BSD style license (GPL and LGPL compatible) applies to
+** this file. It does not apply to libsndfile itself which is released under
+** the GNU LGPL or the libsndfile test suite which is released under the GNU
+** GPL.
+** This means that this header file can be used under this modified BSD style
+** license, but the LGPL still holds for the libsndfile library itself.
+*/
+
+/*
+** sndfile.hh -- A lightweight C++ wrapper for the libsndfile API.
+**
+** All the methods are inlines and all functionality is contained in this
+** file. There is no separate implementation file.
+**
+** API documentation is in the doc/ directory of the source code tarball
+** and at http://libsndfile.github.io/libsndfile/api.html.
+**
+** This file is intended to compile with C++98 and newer.
+*/
+
+#ifndef SNDFILE_HH
+#define SNDFILE_HH
+
+#include <sndfile.h>
+
+#include <string>
+#include <new> // for std::nothrow
+
+#if ((defined (_MSC_VER) && (_MSC_VER >= 1600)) || (__cplusplus >= 201100L))
+#define SF_NULL nullptr
+#else
+#define SF_NULL NULL
+#endif
+
+class SndfileHandle
+{	private :
+		struct SNDFILE_ref
+		{	SNDFILE_ref (void) ;
+			~SNDFILE_ref (void) ;
+
+			SNDFILE *sf ;
+			SF_INFO sfinfo ;
+			int ref ;
+			} ;
+
+		SNDFILE_ref *p ;
+
+	public :
+			/* Default constructor */
+			SndfileHandle (void) : p (SF_NULL) {} ;
+			SndfileHandle (const char *path, int mode = SFM_READ,
+							int format = 0, int channels = 0, int samplerate = 0) ;
+			SndfileHandle (std::string const & path, int mode = SFM_READ,
+							int format = 0, int channels = 0, int samplerate = 0) ;
+			SndfileHandle (int fd, bool close_desc, int mode = SFM_READ,
+							int format = 0, int channels = 0, int samplerate = 0) ;
+			SndfileHandle (SF_VIRTUAL_IO &sfvirtual, void *user_data, int mode = SFM_READ,
+							int format = 0, int channels = 0, int samplerate = 0) ;
+
+#ifdef _WIN32
+			SndfileHandle (const wchar_t *wpath, int mode = SFM_READ,
+							int format = 0, int channels = 0, int samplerate = 0) ;
+#endif
+
+			~SndfileHandle (void) ;
+
+			SndfileHandle (const SndfileHandle &orig) ;
+			SndfileHandle & operator = (const SndfileHandle &rhs) ;
+
+#if (__cplusplus >= 201100L)
+			SndfileHandle (SndfileHandle &&orig) noexcept ;
+			SndfileHandle & operator = (SndfileHandle &&rhs) noexcept ;
+#endif
+
+		/* Mainly for debugging/testing. */
+		int refCount (void) const { return (p == SF_NULL) ? 0 : p->ref ; }
+
+		operator bool () const { return (p != SF_NULL) ; }
+
+		bool operator == (const SndfileHandle &rhs) const { return (p == rhs.p) ; }
+
+		sf_count_t	frames (void) const		{ return p ? p->sfinfo.frames : 0 ; }
+		int			format (void) const		{ return p ? p->sfinfo.format : 0 ; }
+		int			channels (void) const	{ return p ? p->sfinfo.channels : 0 ; }
+		int			samplerate (void) const { return p ? p->sfinfo.samplerate : 0 ; }
+
+		int error (void) const ;
+		const char * strError (void) const ;
+
+		int command (int cmd, void *data, int datasize) ;
+
+		sf_count_t	seek (sf_count_t frames, int whence) ;
+
+		void writeSync (void) ;
+
+		int setString (int str_type, const char* str) ;
+
+		const char* getString (int str_type) const ;
+
+		static int formatCheck (int format, int channels, int samplerate) ;
+
+		sf_count_t read (short *ptr, sf_count_t items) ;
+		sf_count_t read (int *ptr, sf_count_t items) ;
+		sf_count_t read (float *ptr, sf_count_t items) ;
+		sf_count_t read (double *ptr, sf_count_t items) ;
+
+		sf_count_t write (const short *ptr, sf_count_t items) ;
+		sf_count_t write (const int *ptr, sf_count_t items) ;
+		sf_count_t write (const float *ptr, sf_count_t items) ;
+		sf_count_t write (const double *ptr, sf_count_t items) ;
+
+		sf_count_t readf (short *ptr, sf_count_t frames) ;
+		sf_count_t readf (int *ptr, sf_count_t frames) ;
+		sf_count_t readf (float *ptr, sf_count_t frames) ;
+		sf_count_t readf (double *ptr, sf_count_t frames) ;
+
+		sf_count_t writef (const short *ptr, sf_count_t frames) ;
+		sf_count_t writef (const int *ptr, sf_count_t frames) ;
+		sf_count_t writef (const float *ptr, sf_count_t frames) ;
+		sf_count_t writef (const double *ptr, sf_count_t frames) ;
+
+		sf_count_t	readRaw		(void *ptr, sf_count_t bytes) ;
+		sf_count_t	writeRaw	(const void *ptr, sf_count_t bytes) ;
+
+		/**< Raw access to the handle. SndfileHandle keeps ownership. */
+		SNDFILE * rawHandle (void) ;
+
+		/**< Take ownership of handle, if reference count is 1. */
+		SNDFILE * takeOwnership (void) ;
+} ;
+
+/*==============================================================================
+**	Nothing but implementation below.
+*/
+
+inline
+SndfileHandle::SNDFILE_ref::SNDFILE_ref (void)
+: sf (SF_NULL), sfinfo (), ref (1)
+{}
+
+inline
+SndfileHandle::SNDFILE_ref::~SNDFILE_ref (void)
+{	if (sf != SF_NULL) sf_close (sf) ; }
+
+inline
+SndfileHandle::SndfileHandle (const char *path, int mode, int fmt, int chans, int srate)
+: p (SF_NULL)
+{
+	p = new (std::nothrow) SNDFILE_ref () ;
+
+	if (p != SF_NULL)
+	{	p->ref = 1 ;
+
+		p->sfinfo.frames = 0 ;
+		p->sfinfo.channels = chans ;
+		p->sfinfo.format = fmt ;
+		p->sfinfo.samplerate = srate ;
+		p->sfinfo.sections = 0 ;
+		p->sfinfo.seekable = 0 ;
+
+		p->sf = sf_open (path, mode, &p->sfinfo) ;
+		} ;
+
+	return ;
+} /* SndfileHandle const char * constructor */
+
+inline
+SndfileHandle::SndfileHandle (std::string const & path, int mode, int fmt, int chans, int srate)
+: p (SF_NULL)
+{
+	p = new (std::nothrow) SNDFILE_ref () ;
+
+	if (p != SF_NULL)
+	{	p->ref = 1 ;
+
+		p->sfinfo.frames = 0 ;
+		p->sfinfo.channels = chans ;
+		p->sfinfo.format = fmt ;
+		p->sfinfo.samplerate = srate ;
+		p->sfinfo.sections = 0 ;
+		p->sfinfo.seekable = 0 ;
+
+		p->sf = sf_open (path.c_str (), mode, &p->sfinfo) ;
+		} ;
+
+	return ;
+} /* SndfileHandle std::string constructor */
+
+inline
+SndfileHandle::SndfileHandle (int fd, bool close_desc, int mode, int fmt, int chans, int srate)
+: p (SF_NULL)
+{
+	if (fd < 0)
+		return ;
+
+	p = new (std::nothrow) SNDFILE_ref () ;
+
+	if (p != SF_NULL)
+	{	p->ref = 1 ;
+
+		p->sfinfo.frames = 0 ;
+		p->sfinfo.channels = chans ;
+		p->sfinfo.format = fmt ;
+		p->sfinfo.samplerate = srate ;
+		p->sfinfo.sections = 0 ;
+		p->sfinfo.seekable = 0 ;
+
+		p->sf = sf_open_fd (fd, mode, &p->sfinfo, close_desc) ;
+		} ;
+
+	return ;
+} /* SndfileHandle fd constructor */
+
+inline
+SndfileHandle::SndfileHandle (SF_VIRTUAL_IO &sfvirtual, void *user_data, int mode, int fmt, int chans, int srate)
+: p (SF_NULL)
+{
+	p = new (std::nothrow) SNDFILE_ref () ;
+
+	if (p != SF_NULL)
+	{	p->ref = 1 ;
+
+		p->sfinfo.frames = 0 ;
+		p->sfinfo.channels = chans ;
+		p->sfinfo.format = fmt ;
+		p->sfinfo.samplerate = srate ;
+		p->sfinfo.sections = 0 ;
+		p->sfinfo.seekable = 0 ;
+
+		p->sf = sf_open_virtual (&sfvirtual, mode, &p->sfinfo, user_data) ;
+		} ;
+
+	return ;
+} /* SndfileHandle std::string constructor */
+
+inline
+SndfileHandle::~SndfileHandle (void)
+{	if (p != SF_NULL && -- p->ref == 0)
+		delete p ;
+} /* SndfileHandle destructor */
+
+
+inline
+SndfileHandle::SndfileHandle (const SndfileHandle &orig)
+: p (orig.p)
+{	if (p != SF_NULL)
+		++ p->ref ;
+} /* SndfileHandle copy constructor */
+
+inline SndfileHandle &
+SndfileHandle::operator = (const SndfileHandle &rhs)
+{
+	if (&rhs == this)
+		return *this ;
+	if (p != SF_NULL && -- p->ref == 0)
+		delete p ;
+
+	p = rhs.p ;
+	if (p != SF_NULL)
+		++ p->ref ;
+
+	return *this ;
+} /* SndfileHandle copy assignment */
+
+#if (__cplusplus >= 201100L)
+
+inline
+SndfileHandle::SndfileHandle (SndfileHandle &&orig) noexcept
+: p (orig.p)
+{
+	orig.p = SF_NULL ;
+} /* SndfileHandle move constructor */
+
+inline SndfileHandle &
+SndfileHandle::operator = (SndfileHandle &&rhs) noexcept
+{
+	if (&rhs == this)
+		return *this ;
+	if (p != SF_NULL && -- p->ref == 0)
+		delete p ;
+
+	p = rhs.p ;
+	rhs.p = SF_NULL ;
+
+	return *this ;
+} /* SndfileHandle move assignment */
+
+#endif
+
+inline int
+SndfileHandle::error (void) const
+{	return sf_error (p->sf) ; }
+
+inline const char *
+SndfileHandle::strError (void) const
+{	return sf_strerror (p->sf) ; }
+
+inline int
+SndfileHandle::command (int cmd, void *data, int datasize)
+{	return sf_command (p->sf, cmd, data, datasize) ; }
+
+inline sf_count_t
+SndfileHandle::seek (sf_count_t frame_count, int whence)
+{	return sf_seek (p->sf, frame_count, whence) ; }
+
+inline void
+SndfileHandle::writeSync (void)
+{	sf_write_sync (p->sf) ; }
+
+inline int
+SndfileHandle::setString (int str_type, const char* str)
+{	return sf_set_string (p->sf, str_type, str) ; }
+
+inline const char*
+SndfileHandle::getString (int str_type) const
+{	return sf_get_string (p->sf, str_type) ; }
+
+inline int
+SndfileHandle::formatCheck (int fmt, int chans, int srate)
+{
+	SF_INFO sfinfo ;
+
+	sfinfo.frames = 0 ;
+	sfinfo.channels = chans ;
+	sfinfo.format = fmt ;
+	sfinfo.samplerate = srate ;
+	sfinfo.sections = 0 ;
+	sfinfo.seekable = 0 ;
+
+	return sf_format_check (&sfinfo) ;
+}
+
+/*---------------------------------------------------------------------*/
+
+inline sf_count_t
+SndfileHandle::read (short *ptr, sf_count_t items)
+{	return sf_read_short (p->sf, ptr, items) ; }
+
+inline sf_count_t
+SndfileHandle::read (int *ptr, sf_count_t items)
+{	return sf_read_int (p->sf, ptr, items) ; }
+
+inline sf_count_t
+SndfileHandle::read (float *ptr, sf_count_t items)
+{	return sf_read_float (p->sf, ptr, items) ; }
+
+inline sf_count_t
+SndfileHandle::read (double *ptr, sf_count_t items)
+{	return sf_read_double (p->sf, ptr, items) ; }
+
+inline sf_count_t
+SndfileHandle::write (const short *ptr, sf_count_t items)
+{	return sf_write_short (p->sf, ptr, items) ; }
+
+inline sf_count_t
+SndfileHandle::write (const int *ptr, sf_count_t items)
+{	return sf_write_int (p->sf, ptr, items) ; }
+
+inline sf_count_t
+SndfileHandle::write (const float *ptr, sf_count_t items)
+{	return sf_write_float (p->sf, ptr, items) ; }
+
+inline sf_count_t
+SndfileHandle::write (const double *ptr, sf_count_t items)
+{	return sf_write_double (p->sf, ptr, items) ; }
+
+inline sf_count_t
+SndfileHandle::readf (short *ptr, sf_count_t frame_count)
+{	return sf_readf_short (p->sf, ptr, frame_count) ; }
+
+inline sf_count_t
+SndfileHandle::readf (int *ptr, sf_count_t frame_count)
+{	return sf_readf_int (p->sf, ptr, frame_count) ; }
+
+inline sf_count_t
+SndfileHandle::readf (float *ptr, sf_count_t frame_count)
+{	return sf_readf_float (p->sf, ptr, frame_count) ; }
+
+inline sf_count_t
+SndfileHandle::readf (double *ptr, sf_count_t frame_count)
+{	return sf_readf_double (p->sf, ptr, frame_count) ; }
+
+inline sf_count_t
+SndfileHandle::writef (const short *ptr, sf_count_t frame_count)
+{	return sf_writef_short (p->sf, ptr, frame_count) ; }
+
+inline sf_count_t
+SndfileHandle::writef (const int *ptr, sf_count_t frame_count)
+{	return sf_writef_int (p->sf, ptr, frame_count) ; }
+
+inline sf_count_t
+SndfileHandle::writef (const float *ptr, sf_count_t frame_count)
+{	return sf_writef_float (p->sf, ptr, frame_count) ; }
+
+inline sf_count_t
+SndfileHandle::writef (const double *ptr, sf_count_t frame_count)
+{	return sf_writef_double (p->sf, ptr, frame_count) ; }
+
+inline sf_count_t
+SndfileHandle::readRaw (void *ptr, sf_count_t bytes)
+{	return sf_read_raw (p->sf, ptr, bytes) ; }
+
+inline sf_count_t
+SndfileHandle::writeRaw (const void *ptr, sf_count_t bytes)
+{	return sf_write_raw (p->sf, ptr, bytes) ; }
+
+inline SNDFILE *
+SndfileHandle::rawHandle (void)
+{	return (p ? p->sf : SF_NULL) ; }
+
+inline SNDFILE *
+SndfileHandle::takeOwnership (void)
+{
+	if (p == SF_NULL || (p->ref != 1))
+		return SF_NULL ;
+
+	SNDFILE * sf = p->sf ;
+	p->sf = SF_NULL ;
+	delete p ;
+	p = SF_NULL ;
+	return sf ;
+}
+
+#ifdef _WIN32
+
+inline
+SndfileHandle::SndfileHandle (const wchar_t *wpath, int mode, int fmt, int chans, int srate)
+: p (SF_NULL)
+{
+	p = new (std::nothrow) SNDFILE_ref () ;
+
+	if (p != SF_NULL)
+	{	p->ref = 1 ;
+
+		p->sfinfo.frames = 0 ;
+		p->sfinfo.channels = chans ;
+		p->sfinfo.format = fmt ;
+		p->sfinfo.samplerate = srate ;
+		p->sfinfo.sections = 0 ;
+		p->sfinfo.seekable = 0 ;
+
+		p->sf = sf_wchar_open (wpath, mode, &p->sfinfo) ;
+		} ;
+
+	return ;
+} /* SndfileHandle const wchar_t * constructor */
+
+#endif
+
+#endif	/* SNDFILE_HH */
+

extern/libsndfile-modified/m4/ax_add_fortify_source.m4

@@ -0,0 +1,80 @@
+# ===========================================================================
+#  https://www.gnu.org/software/autoconf-archive/ax_add_fortify_source.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_ADD_FORTIFY_SOURCE
+#
+# DESCRIPTION
+#
+#   Check whether -D_FORTIFY_SOURCE=2 can be added to CPPFLAGS without macro
+#   redefinition warnings, other cpp warnings or linker. Some distributions
+#   (such as Gentoo Linux) enable _FORTIFY_SOURCE globally in their
+#   compilers, leading to unnecessary warnings in the form of
+#
+#     <command-line>:0:0: error: "_FORTIFY_SOURCE" redefined [-Werror]
+#     <built-in>: note: this is the location of the previous definition
+#
+#   which is a problem if -Werror is enabled. This macro checks whether
+#   _FORTIFY_SOURCE is already defined, and if not, adds -D_FORTIFY_SOURCE=2
+#   to CPPFLAGS.
+#
+#   Newer mingw-w64 msys2 package comes with a bug in
+#   headers-git-7.0.0.5546.d200317d-1. It broke -D_FORTIFY_SOURCE support,
+#   and would need -lssp or -fstack-protector.  See
+#   https://github.com/msys2/MINGW-packages/issues/5803. Try to actually
+#   link it.
+#
+# LICENSE
+#
+#   Copyright (c) 2017 David Seifert <soap@gentoo.org>
+#   Copyright (c) 2019 Reini Urban <rurban@cpan.org>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved.  This file is offered as-is, without any
+#   warranty.
+
+#serial 4
+
+AC_DEFUN([AX_ADD_FORTIFY_SOURCE],[
+    ac_save_cflags=$CFLAGS
+    ac_cwerror_flag=yes
+    AX_CHECK_COMPILE_FLAG([-Werror],[CFLAGS="$CFLAGS -Werror"])
+    AC_MSG_CHECKING([whether to add -D_FORTIFY_SOURCE=2 to CPPFLAGS])
+    AC_LINK_IFELSE([
+        AC_LANG_PROGRAM([],
+            [[
+                #ifndef _FORTIFY_SOURCE
+                    return 0;
+                #else
+                    this_is_an_error;
+                #endif
+            ]]
+        )],
+        AC_LINK_IFELSE([
+            AC_LANG_SOURCE([[
+                #define _FORTIFY_SOURCE 2
+                #include <string.h>
+                int main() {
+                    char *s = " ";
+                    strcpy(s, "x");
+                    return strlen(s)-1;
+                }
+              ]]
+            )],
+            [
+              AC_MSG_RESULT([yes])
+              CFLAGS=$ac_save_cflags
+              CPPFLAGS="$CPPFLAGS -D_FORTIFY_SOURCE=2"
+            ], [
+              AC_MSG_RESULT([no])
+              CFLAGS=$ac_save_cflags
+            ],
+        ),
+        [
+          AC_MSG_RESULT([no])
+          CFLAGS=$ac_save_cflags
+        ])
+])

extern/libsndfile-modified/m4/ax_append_compile_flags.m4

@@ -0,0 +1,67 @@
+# ============================================================================
+#  https://www.gnu.org/software/autoconf-archive/ax_append_compile_flags.html
+# ============================================================================
+#
+# SYNOPSIS
+#
+#   AX_APPEND_COMPILE_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS], [INPUT])
+#
+# DESCRIPTION
+#
+#   For every FLAG1, FLAG2 it is checked whether the compiler works with the
+#   flag.  If it does, the flag is added FLAGS-VARIABLE
+#
+#   If FLAGS-VARIABLE is not specified, the current language's flags (e.g.
+#   CFLAGS) is used.  During the check the flag is always added to the
+#   current language's flags.
+#
+#   If EXTRA-FLAGS is defined, it is added to the current language's default
+#   flags (e.g. CFLAGS) when the check is done.  The check is thus made with
+#   the flags: "CFLAGS EXTRA-FLAGS FLAG".  This can for example be used to
+#   force the compiler to issue an error when a bad flag is given.
+#
+#   INPUT gives an alternative input source to AC_COMPILE_IFELSE.
+#
+#   NOTE: This macro depends on the AX_APPEND_FLAG and
+#   AX_CHECK_COMPILE_FLAG. Please keep this macro in sync with
+#   AX_APPEND_LINK_FLAGS.
+#
+# LICENSE
+#
+#   Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
+#
+#   This program is free software: you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation, either version 3 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <https://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 6
+
+AC_DEFUN([AX_APPEND_COMPILE_FLAGS],
+[AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG])
+AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
+for flag in $1; do
+  AX_CHECK_COMPILE_FLAG([$flag], [AX_APPEND_FLAG([$flag], [$2])], [], [$3], [$4])
+done
+])dnl AX_APPEND_COMPILE_FLAGS

extern/libsndfile-modified/m4/ax_append_flag.m4

@@ -0,0 +1,71 @@
+# ===========================================================================
+#      https://www.gnu.org/software/autoconf-archive/ax_append_flag.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_APPEND_FLAG(FLAG, [FLAGS-VARIABLE])
+#
+# DESCRIPTION
+#
+#   FLAG is appended to the FLAGS-VARIABLE shell variable, with a space
+#   added in between.
+#
+#   If FLAGS-VARIABLE is not specified, the current language's flags (e.g.
+#   CFLAGS) is used.  FLAGS-VARIABLE is not changed if it already contains
+#   FLAG.  If FLAGS-VARIABLE is unset in the shell, it is set to exactly
+#   FLAG.
+#
+#   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
+#   Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
+#
+#   This program is free software: you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation, either version 3 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <https://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 7
+
+AC_DEFUN([AX_APPEND_FLAG],
+[dnl
+AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_SET_IF
+AS_VAR_PUSHDEF([FLAGS], [m4_default($2,_AC_LANG_PREFIX[FLAGS])])
+AS_VAR_SET_IF(FLAGS,[
+  AS_CASE([" AS_VAR_GET(FLAGS) "],
+    [*" $1 "*], [AC_RUN_LOG([: FLAGS already contains $1])],
+    [
+     AS_VAR_APPEND(FLAGS,[" $1"])
+     AC_RUN_LOG([: FLAGS="$FLAGS"])
+    ])
+  ],
+  [
+  AS_VAR_SET(FLAGS,[$1])
+  AC_RUN_LOG([: FLAGS="$FLAGS"])
+  ])
+AS_VAR_POPDEF([FLAGS])dnl
+])dnl AX_APPEND_FLAG