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use x42/weakjack as a possible solution to #1480

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tildearrow 2023-09-12 18:29:28 -05:00
parent 8fd643a792
commit db5428474a
8 changed files with 796 additions and 8 deletions
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12
CMakeLists.txt
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@ -357,14 +357,16 @@ endif()
if (WITH_JACK) if (WITH_JACK)
find_package(PkgConfig REQUIRED) find_package(PkgConfig REQUIRED)
pkg_check_modules(JACK REQUIRED jack) pkg_check_modules(JACK REQUIRED jack)
list(APPEND AUDIO_SOURCES extern/weakjack/weak_libjack.c)
list(APPEND AUDIO_SOURCES src/audio/jack.cpp) list(APPEND AUDIO_SOURCES src/audio/jack.cpp)
list(APPEND DEPENDENCIES_INCLUDE_DIRS ${JACK_INCLUDE_DIRS}) list(APPEND DEPENDENCIES_INCLUDE_DIRS ${JACK_INCLUDE_DIRS})
list(APPEND DEPENDENCIES_DEFINES HAVE_JACK) list(APPEND DEPENDENCIES_DEFINES HAVE_JACK)
list(APPEND DEPENDENCIES_COMPILE_OPTIONS ${JACK_CFLAGS_OTHER}) list(APPEND DEPENDENCIES_DEFINES USE_WEAK_JACK)
list(APPEND DEPENDENCIES_LIBRARIES ${JACK_LIBRARIES}) #list(APPEND DEPENDENCIES_COMPILE_OPTIONS ${JACK_CFLAGS_OTHER})
list(APPEND DEPENDENCIES_LIBRARY_DIRS ${JACK_LIBRARY_DIRS}) #list(APPEND DEPENDENCIES_LIBRARIES ${JACK_LIBRARIES})
list(APPEND DEPENDENCIES_LINK_OPTIONS ${JACK_LDFLAGS_OTHER}) #list(APPEND DEPENDENCIES_LIBRARY_DIRS ${JACK_LIBRARY_DIRS})
list(APPEND DEPENDENCIES_LEGACY_LDFLAGS ${JACK_LDFLAGS}) #list(APPEND DEPENDENCIES_LINK_OPTIONS ${JACK_LDFLAGS_OTHER})
#list(APPEND DEPENDENCIES_LEGACY_LDFLAGS ${JACK_LDFLAGS})
message(STATUS "Building with JACK support") message(STATUS "Building with JACK support")
else() else()
message(STATUS "Building without JACK support") message(STATUS "Building without JACK support")

1
extern/weakjack/.gitignore vendored Normal file
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@ -0,0 +1 @@
*.swp

79
extern/weakjack/README.md vendored Normal file
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Weak-JACK
=========
This small library abstracts the [JACK](http://jackaudio.org) Application Binary Interface.
Background and Motivation
-------------------------
The jack shared library needs to be installed system-wide (for all jack applications
to share), it can not be part of an application itself.
JACK developers take great care to not break binary compatibility of libjack. An
application compiled with one version of jack will work with all future versions
of jack. However, this only works well on GNU/Linux, BSD and to some extend on OSX.
weak-jack linking is useful (at least) in the following cases:
* the resulting application should not be directly linked to libjack.[so|dll|dylib]
IOW: the application should start even if libjack is not installed.
* the ABI of libjack is not stable. Note, this is only relevant for the Windows .dll
(e.g. applications compiled and linked with jack-1.9.9 will crash with jack-1.9.10
on windows. -- MSVC has a workaround: link by function-name, not ordinal, mingw
does not offer this)
* Reference new API functions (e.g. meta-data API or new latency compensation)
in the application, which is not available on older versions of jack.
Usage
-----
1. Copy the source files into your application's source (or use a git submodule)
2. replace all `#include<jack/*>` in your sources with `#include "weak-jack.h"`
3. add `weak_libjack.c` to the build-source of your project
(in case your build-system does not detect `#include` dependencies automatically,
also reference the header and .def file).
4. Define `USE_WEAK_JACK` for all platforms where you want to use weak-linking. Usually
`CFLAGS+=-DUSE_WEAK_JACK CXXFLAGS+=-DUSE_WEAK_JACK`
5. Do not link your application to libjack (`-ljack`) when `USE_WEAK_JACK` is defined.
Note the jack-headers still need to be present when compiling the application.
The application code itself does not need to be changed.
The first call to `jack_client_open()` will try to find and load libjack, if it cannot be
found, it will fail (return `NULL` and set `jack_status_t` if provided to `JackFailure`.)
It is possible to explicitly initialize and query availability of libjack using
`have_libjack();` it returns 0 if libjack is available and can be used. (see the header
file for non-zero error codes).
Caveats
-------
If libjack is not available, all `jack_*` API calls are turned into no-operation functions.
This is not a problem in general, as jack-applications will not use any part of the jack API if
jack_client_open fails. The only exception here may be `jack_ringbuffer`. Note that the ringbuffer
implementation is also part of libjack and will not be available.
The dummy implementation for the ringbuffer API is safe (read, writes are ignored and return failure
or zero-bytes length), but if your application depends on it to work, you're out of luck :)
The function wrappers in `weak_libjack.def` were collected pragmatically it's quite possible that
some JACK API calls have been missed. If you application fails to link (without -ljack), please report
at https://github.com/x42/weakjack/issues
License
-------
GNU General Public License version 2 (or later).
Alternatives
------------
An alternative, more liberally licensed, implementation that abstracts and wraps jack completely
(incl headers) can be found at
https://github.com/falkTX/Carla/tree/master/source/jackbridge (C++ only),
and a jack2 specific version at https://github.com/sletz/jack2/blob/master/common/JackWeakAPI.c
A variant for python bindings is also provided by falkTX:
https://github.com/falkTX/Cadence/blob/master/src/jacklib.py

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extern/weakjack/weak_libjack.c vendored Normal file
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/* runtime/weak dynamic JACK linking
*
* (C) 2014 Robin Gareus <robin@gareus.org>
*
* 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 program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "weak_libjack.h"
#ifndef USE_WEAK_JACK
int have_libjack (void) {
return 0;
}
#else
#include <stdio.h>
#include <string.h>
#include <assert.h>
#ifdef _WIN32
#include <windows.h>
#else
#include <dlfcn.h>
#endif
static void* lib_open(const char* const so) {
#ifdef _WIN32
return (void*) LoadLibraryA(so);
#else
return dlopen(so, RTLD_NOW|RTLD_LOCAL);
#endif
}
static void* lib_symbol(void* const lib, const char* const sym) {
#ifdef _WIN32
return (void*) GetProcAddress((HMODULE)lib, sym);
#else
return dlsym(lib, sym);
#endif
}
#if defined _MSC_VER && ! defined __INTEL_COMPILER
typedef void * pvoid_t;
#define MAPSYM(SYM, FAIL) _j._ ## SYM = (func_t)lib_symbol(lib, "jack_" # SYM); \
if (!_j._ ## SYM) err |= FAIL;
#elif defined NDEBUG
typedef void * __attribute__ ((__may_alias__)) pvoid_t;
#define MAPSYM(SYM, FAIL) *(pvoid_t *)(&_j._ ## SYM) = lib_symbol(lib, "jack_" # SYM); \
if (!_j._ ## SYM) err |= FAIL;
#else
typedef void * __attribute__ ((__may_alias__)) pvoid_t;
#define MAPSYM(SYM, FAIL) *(pvoid_t *)(&_j._ ## SYM) = lib_symbol(lib, "jack_" # SYM); \
if (!_j._ ## SYM) { \
if (FAIL) { \
fprintf(stderr, "*** WEAK-JACK: required symbol 'jack_%s' was not found\n", "" # SYM); \
} \
err |= FAIL; \
}
#endif
typedef void (* func_t) (void);
/* function pointers to the real jack API */
static struct WeakJack {
func_t _client_open; // special case due to varargs
#define JCFUN(ERR, RTYPE, NAME, RVAL) func_t _ ## NAME ;
#define JPFUN(ERR, RTYPE, NAME, DEF, ARGS, RVAL) func_t _ ## NAME ;
#define JXFUN(ERR, RTYPE, NAME, DEF, ARGS, CODE) func_t _ ## NAME ;
#define JVFUN(ERR, NAME, DEF, ARGS, CODE) func_t _ ## NAME ;
#include "weak_libjack.def"
#undef JCFUN
#undef JPFUN
#undef JXFUN
#undef JVFUN
} _j;
static int _status = -1;
#if !defined _MSC_VER || defined __INTEL_COMPILER
__attribute__((constructor))
#endif
static void init_weak_jack(void)
{
void* lib;
int err = 0;
#ifndef NDEBUG
fprintf(stderr, "*** WEAK-JACK: initializing\n");
#endif
memset(&_j, 0, sizeof(_j));
#ifdef __APPLE__
lib = lib_open("libjack.dylib");
if (!lib) {
lib = lib_open("/usr/local/lib/libjack.dylib");
}
if (!lib) {
/* New Homebrew location */
lib = lib_open("/opt/homebrew/lib/libjack.dylib");
if (lib) {
fprintf(stderr, "*** WEAK-JACK: using Homebrew\n");
}
}
if (!lib) {
/* MacPorts location */
lib = lib_open("/opt/local/lib/libjack.dylib");
if (lib) {
fprintf(stderr, "*** WEAK-JACK: using MacPorts\n");
}
}
#elif (defined _WIN32)
# if defined(__x86_64__) || defined(_M_X64) || defined(__amd64__)
lib = lib_open("libjack64.dll");
# else
lib = lib_open("libjack.dll");
# endif
#else
lib = lib_open("libjack.so.0");
#endif
if (!lib) {
#ifndef NDEBUG
fprintf(stderr, "*** WEAK-JACK: libjack was not found\n");
#endif
_status = -2;
return;
}
/* found library, now lookup functions */
MAPSYM(client_open, 2)
#define JCFUN(ERR, RTYPE, NAME, RVAL) MAPSYM(NAME, ERR)
#define JPFUN(ERR, RTYPE, NAME, DEF, ARGS, RVAL) MAPSYM(NAME, ERR)
#define JXFUN(ERR, RTYPE, NAME, DEF, ARGS, CODE) MAPSYM(NAME, ERR)
#define JVFUN(ERR, NAME, DEF, ARGS, CODE) MAPSYM(NAME, ERR)
#include "weak_libjack.def"
#undef JCFUN
#undef JPFUN
#undef JXFUN
#undef JVFUN
/* if a required symbol is not found, disable JACK completly */
if (err) {
_j._client_open = NULL;
}
_status = err;
#ifndef NDEBUG
fprintf(stderr, "*** WEAK-JACK: %s. (%d)\n", err ? "jack is not available" : "OK", _status);
#endif
}
int have_libjack (void) {
if (_status == -1) {
init_weak_jack();
}
return _status;
}
/*******************************************************************************
* helper macros
*/
#if defined(__GNUC__) && (__GNUC__ > 2) && !defined(NDEBUG)
#define likely(expr) (__builtin_expect (!!(expr), 1))
#else
#define likely(expr) (expr)
#endif
#ifndef NDEBUG
# define WJACK_WARNING(NAME) \
fprintf(stderr, "*** WEAK-JACK: function 'jack_%s' ignored\n", "" # NAME);
#else
# define WJACK_WARNING(NAME) ;
#endif
/******************************************************************************
* JACK API wrapper functions.
*
* if a function pointer is set in the static struct WeakJack _j,
* the function is called directly.
* Otherwise a dummy NOOP implementation is provided.
* The latter is mainly for compile-time warnings.
*
* If libjack is not found, jack_client_open() will fail.
* In that case the application should not call any other libjack
* functions. Hence a real implementation is not needed.
* (jack ringbuffer may be an exception for some apps)
*/
/* dedicated support for jack_client_open(,..) variable arg function macro */
func_t WJACK_get_client_open(void) {
if (_status == -1) {
init_weak_jack();
}
return _j._client_open;
}
/* callback to set status */
jack_client_t * WJACK_no_client_open (const char *client_name, jack_options_t options, jack_status_t *status, ...) {
WJACK_WARNING(client_open);
if (status) { *status = JackFailure; }
return NULL;
}
/*******************************************************************************
* Macros to wrap jack API
*/
/* abstraction for jack_client functions
* rtype jack_function_name (jack_client_t *client) { return rval; }
*/
#define JCFUN(ERR, RTYPE, NAME, RVAL) \
RTYPE WJACK_ ## NAME (jack_client_t *client) { \
if likely(_j._ ## NAME) { \
return ((RTYPE (*)(jack_client_t *client)) _j._ ## NAME)(client); \
} else { \
WJACK_WARNING(NAME) \
return RVAL; \
} \
}
/* abstraction for NOOP functions with return value
* rtype jack_function_name (ARGS) { return rval; }
*/
#define JPFUN(ERR, RTYPE, NAME, DEF, ARGS, RVAL) \
RTYPE WJACK_ ## NAME DEF { \
if likely(_j._ ## NAME) { \
return ((RTYPE (*)DEF) _j._ ## NAME) ARGS; \
} else { \
WJACK_WARNING(NAME) \
return RVAL; \
} \
}
/* abstraction for functions that need custom code.
* e.g. functions with return-value-pointer args,
* use CODE to initialize value
*
* rtype jack_function_name (ARGS) { CODE }
*/
#define JXFUN(ERR, RTYPE, NAME, DEF, ARGS, CODE) \
RTYPE WJACK_ ## NAME DEF { \
if likely(_j._ ## NAME) { \
return ((RTYPE (*)DEF) _j._ ## NAME) ARGS; \
} else { \
WJACK_WARNING(NAME) \
CODE \
} \
}
/* abstraction for void functions with return-value-pointer args
* void jack_function_name (ARGS) { CODE }
*/
#define JVFUN(ERR, NAME, DEF, ARGS, CODE) \
void WJACK_ ## NAME DEF { \
if likely(_j._ ## NAME) { \
((void (*)DEF) _j._ ## NAME) ARGS; \
} else { \
WJACK_WARNING(NAME) \
CODE \
} \
}
#include "weak_libjack.def"
#undef JCFUN
#undef JPFUN
#undef JXFUN
#undef JVFUN
#endif // end USE_WEAK_JACK

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/* macro-absraction of the JACK API
*
* see weak_libjack.c for details, in general arguments are:
*
* [required], [return type], [name], [arguments], [code or return value]
*
* This file is included multiple times with different macro definitions
* do not add header guards.
* see https://en.wikibooks.org/wiki/C_Programming/Preprocessor#X-Macros
*/
#ifdef USE_WEAK_JACK
/* <jack/jack.h> */
JCFUN(1, int, client_close, 0)
JCFUN(1, char*, get_client_name, NULL)
JVFUN(0, on_shutdown, (jack_client_t *c, JackShutdownCallback s, void *a), (c,s,a),)
JVFUN(0, on_info_shutdown, (jack_client_t *c, JackInfoShutdownCallback s, void *a), (c,s,a),)
JPFUN(1, int, set_process_callback, (jack_client_t *c, JackProcessCallback p, void *a), (c,p,a), -1)
JPFUN(1, int, set_freewheel_callback, (jack_client_t *c, JackFreewheelCallback p, void *a), (c,p,a), -1)
JPFUN(1, int, set_buffer_size_callback, (jack_client_t *c, JackBufferSizeCallback p, void *a), (c,p,a), -1)
JPFUN(1, int, set_sample_rate_callback, (jack_client_t *c, JackSampleRateCallback p, void *a), (c,p,a), -1)
JPFUN(1, int, set_port_registration_callback, (jack_client_t *c, JackPortRegistrationCallback p, void *a), (c,p,a), -1)
JPFUN(1, int, set_port_connect_callback, (jack_client_t *c, JackPortConnectCallback p, void *a), (c,p,a), -1)
JPFUN(1, int, set_graph_order_callback, (jack_client_t *c, JackGraphOrderCallback g, void *a), (c,g,a), -1)
JPFUN(1, int, set_xrun_callback, (jack_client_t *c, JackXRunCallback g, void *a), (c,g,a), -1)
JPFUN(1, int, set_latency_callback, (jack_client_t *c, JackLatencyCallback g, void *a), (c,g,a), -1)
JVFUN(1, set_error_function, (void (*f)(const char *)), (f),)
JVFUN(1, set_info_function, (void (*f)(const char *)), (f),)
JCFUN(1, int, activate, -1)
JCFUN(1, int, deactivate, -1)
JPFUN(1, int, client_name_size, (), (), 32)
JCFUN(1, jack_nframes_t, get_sample_rate, 0)
JCFUN(1, jack_nframes_t, get_buffer_size, 0)
JPFUN(1, jack_nframes_t, frames_since_cycle_start, (const jack_client_t *c), (c), 0)
JPFUN(1, jack_nframes_t, frame_time, (const jack_client_t *c), (c), 0)
JPFUN(1, jack_nframes_t, last_frame_time, (const jack_client_t *c), (c), 0)
JPFUN(1, jack_time_t, get_time, (void), (), 0)
JCFUN(1, float, cpu_load, 0)
JCFUN(1, int, is_realtime, 0)
JPFUN(1, int, set_freewheel, (jack_client_t *c, int o), (c,o), 0)
JPFUN(1, int, set_buffer_size, (jack_client_t *c, jack_nframes_t b), (c,b), 0)
JCFUN(0, int, recompute_total_latencies, 0)
JPFUN(0, jack_nframes_t, port_get_total_latency, (jack_client_t *c, jack_port_t *p), (c,p), 0)
JVFUN(0, port_get_latency_range, (jack_port_t *p, jack_latency_callback_mode_t m, jack_latency_range_t *r), (p,m,r), if (r) {r->min = r->max = 0;})
JVFUN(0, port_set_latency_range, (jack_port_t *p, jack_latency_callback_mode_t m, jack_latency_range_t *r), (p,m,r),)
JPFUN(1, void*, port_get_buffer, (jack_port_t *p, jack_nframes_t n), (p,n), NULL)
JPFUN(1, int, port_request_monitor, (jack_port_t *p, int o), (p,o), 0)
JPFUN(1, int, port_ensure_monitor, (jack_port_t *p, int o), (p,o), 0)
JPFUN(1, int, port_monitoring_input, (jack_port_t *p), (p), 0)
JPFUN(1, const char*, port_name, (const jack_port_t *p), (p), NULL)
JPFUN(1, const char*, port_short_name, (const jack_port_t *p), (p), NULL)
JPFUN(1, int, port_flags, (const jack_port_t *p), (p), 0)
JPFUN(1, int, port_is_mine, (const jack_client_t *c, const jack_port_t *p), (c,p), 0)
JPFUN(1, int, port_connected, (const jack_port_t *p), (p), 0)
JPFUN(1, const char**, get_ports,(jack_client_t *c, const char *p, const char *t, unsigned long f), (c,p,t,f), NULL)
JPFUN(1, int, port_name_size, (void), (), 0)
JPFUN(1, int, port_type_size, (void), (), 0)
JPFUN(1, size_t, port_type_get_buffer_size, (jack_client_t *c, const char *t), (c,t), 0)
JPFUN(1, jack_port_t*, port_by_name, (jack_client_t *c, const char *n), (c,n), NULL)
JPFUN(1, jack_port_t*, port_by_id, (jack_client_t *c, jack_port_id_t i), (c,i), NULL)
JPFUN(1, jack_port_t*, port_register, (jack_client_t *c, const char *n, const char *t, unsigned long f, unsigned long b), (c,n,t,f,b), NULL)
JPFUN(1, int, port_unregister, (jack_client_t *c, jack_port_t *p), (c,p), 0)
JPFUN(1, const char *, port_type, (const jack_port_t *p), (p), 0)
JPFUN(1, const char **, port_get_connections, (const jack_port_t *p), (p), 0)
JPFUN(1, const char **, port_get_all_connections, (const jack_client_t *c, const jack_port_t *p), (c,p), 0)
JPFUN(1, int, port_set_name, (jack_port_t *p, const char *n), (p,n), -1)
#if defined(__clang__)
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wdeprecated-declarations"
#elif __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wdeprecated-declarations"
#endif
JXFUN(0, int, port_rename, (jack_client_t *c, jack_port_t *p, const char *n), (c,p,n), return jack_port_set_name (p,n);)
#if defined(__clang__)
#pragma clang diagnostic pop
#elif __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
#pragma GCC diagnostic pop
#endif
JPFUN(1, int, port_get_aliases, (const jack_port_t *port, char* const aliases[2]), (port,aliases), 0)
JPFUN(1, int, port_disconnect, (jack_client_t *c, jack_port_t *p), (c,p), 0)
JPFUN(1, int, connect, (jack_client_t *c, const char *s, const char *d), (c,s,d), -1)
JPFUN(1, int, disconnect, (jack_client_t *c, const char *s, const char *d), (c,s,d), -1)
JVFUN(0, free, (void *p), (p), free(p);)
JCFUN(1, jack_nframes_t, cycle_wait, 0)
JVFUN(1, cycle_signal, (jack_client_t *c, int s), (c,s),)
JPFUN(1, int, set_process_thread, (jack_client_t *c, JackThreadCallback p, void *a), (c,p,a), -1)
JPFUN(1, int, set_thread_init_callback, (jack_client_t *c, JackThreadInitCallback p, void *a), (c,p,a), -1)
JPFUN(1, int, transport_locate, (jack_client_t *c, jack_nframes_t f), (c,f), 0)
JVFUN(1, transport_start, (jack_client_t *c), (c),)
JVFUN(1, transport_stop, (jack_client_t *c), (c),)
JPFUN(1, jack_nframes_t, get_current_transport_frame, (const jack_client_t *c), (c), 0)
JXFUN(1, jack_transport_state_t, transport_query, (const jack_client_t *c, jack_position_t *p), (c,p), memset(p, 0, sizeof(jack_position_t)); return JackTransportStopped;)
JPFUN(1, int, set_sync_callback, (jack_client_t *c, JackSyncCallback p, void *a), (c,p,a), -1)
JPFUN(1, int, set_timebase_callback, (jack_client_t *c, int l, JackTimebaseCallback p, void *a), (c,l,p,a), -1)
JPFUN(1, int, set_sync_timeout, (jack_client_t *c, jack_time_t t), (c,t), -1)
JCFUN(1, int, release_timebase, 0)
/* <jack/midiport.h> */
JPFUN(1, uint32_t, midi_get_event_count, (void* p), (p), 0)
JPFUN(1, int, midi_event_get, (jack_midi_event_t *e, void *p, uint32_t i), (e,p,i), -1)
JPFUN(1, int, midi_event_write, (void *b, jack_nframes_t t, const jack_midi_data_t *d, size_t s), (b,t,d,s), -1)
JVFUN(1, midi_clear_buffer, (void *b), (b),)
/* <jack/session.h> */
JPFUN(0, int, set_session_callback, (jack_client_t *c, JackSessionCallback s, void *a), (c,s,a), -1)
JPFUN(0, int, session_reply, (jack_client_t *c, jack_session_event_t *e), (c,e), -1)
JVFUN(0, session_event_free, (jack_session_event_t *e), (e), )
/* <jack/ringbuffer.h> */
JPFUN(1, jack_ringbuffer_t *, ringbuffer_create, (size_t s), (s), NULL)
JVFUN(1, ringbuffer_free, (jack_ringbuffer_t *rb), (rb), )
JVFUN(1, ringbuffer_reset, (jack_ringbuffer_t *rb), (rb), )
JVFUN(1, ringbuffer_read_advance, (jack_ringbuffer_t *rb, size_t c), (rb,c), )
JVFUN(1, ringbuffer_write_advance, (jack_ringbuffer_t *rb, size_t c), (rb,c), )
JPFUN(1, size_t, ringbuffer_read_space, (const jack_ringbuffer_t *rb), (rb), 0)
JPFUN(1, size_t, ringbuffer_write_space, (const jack_ringbuffer_t *rb), (rb), 0)
JPFUN(1, size_t, ringbuffer_read, (jack_ringbuffer_t *rb, char *d, size_t c), (rb,d,c), 0)
JPFUN(1, size_t, ringbuffer_write, (jack_ringbuffer_t *rb, const char *s, size_t c), (rb,s,c), 0)
JPFUN(0, int, ringbuffer_mlock, (jack_ringbuffer_t *rb), (rb), 0)
JVFUN(0, ringbuffer_get_read_vector, (const jack_ringbuffer_t *rb, jack_ringbuffer_data_t *v), (rb,v), if (v) {v->buf=NULL; v->len=0;} )
JVFUN(0, ringbuffer_get_write_vector, (const jack_ringbuffer_t *rb, jack_ringbuffer_data_t *v), (rb,v), if (v) {v->buf=NULL; v->len=0;} )
JPFUN(0, size_t, ringbuffer_peek, (jack_ringbuffer_t *rb, char *d, size_t c), (rb,d,c), 0)
/* <jack/thread.h> */
JCFUN(0, int, client_real_time_priority, 0)
JCFUN(0, int, client_max_real_time_priority, 0)
JPFUN(0, int, acquire_real_time_scheduling, (jack_native_thread_t t, int p), (t,p), 0)
JPFUN(0, int, drop_real_time_scheduling, (jack_native_thread_t t), (t), 0)
#if (!defined _WIN32 && (defined _REENTRANT || defined __linux__))
/* on POSIX systems, call pthread_join() when libjack does not provide jack_client_stop_thread */
JXFUN(0, int, client_stop_thread, (jack_client_t* c, jack_native_thread_t t), (c,t), if (t) { pthread_join(t, NULL); return 0; } else { return -1;})
#else
JPFUN(0, int, client_stop_thread, (jack_client_t* c, jack_native_thread_t t), (c,t), 0)
#endif
JPFUN(0, int, client_kill_thread, (jack_client_t* c, jack_native_thread_t t), (c,t), 0)
#ifndef _WIN32
JVFUN(0, set_thread_creator, (jack_thread_creator_t c), (c),)
#endif
JPFUN(1, int, client_create_thread, \
(jack_client_t* c, jack_native_thread_t *t, int p, int r, void *(*f)(void*), void *a), (c,t,p,r,f,a), 0)
#ifndef NO_JACK_METADATA
/* <jack/uuid.h> - TODO*/
/* <jack/jack.h> */
JPFUN(0, char *, get_uuid_for_client_name, (jack_client_t* c, const char* n), (c,n), NULL)
JPFUN(0, char *, get_client_name_by_uuid, (jack_client_t* c, const char* u), (c,u), NULL)
JPFUN(0, jack_uuid_t, port_uuid, (const jack_port_t *p), (p), 0)
/* <jack/metadata.h> */
JPFUN(0, int, set_property, (jack_client_t* c, jack_uuid_t s, const char* k, const char* v, const char* t), (c,s,k,v,t), -1)
JXFUN(0, int, get_property, (jack_uuid_t s, const char* k, char** v, char** t), (s,k,v,t), if (v) *v=NULL; if (t) *t=NULL; return -1;)
JVFUN(0, free_description, (jack_description_t* d, int f), (d,f),)
JXFUN(0, int, get_properties, (jack_uuid_t s, jack_description_t* d), (s,d), if (d) {d->properties = NULL; d->property_cnt = 0;} return -1;)
JXFUN(0, int, get_all_properties, (jack_description_t** d), (d), if (d) *d=NULL; return -1;)
JPFUN(0, int, remove_property, (jack_client_t* c, jack_uuid_t s, const char* k), (c,s,k), -1)
JPFUN(0, int, remove_properties, (jack_client_t* c, jack_uuid_t s), (c,s), -1)
JPFUN(0, int, remove_all_properties, (jack_client_t* c), (c), -1)
JPFUN(0, int, set_property_change_callback, (jack_client_t *c, JackPropertyChangeCallback s, void *a), (c,s,a), -1)
#endif
/* <jack/statistics.h> */
JCFUN(1, float, get_max_delayed_usecs, 0.0)
JCFUN(1, float, get_xrun_delayed_usecs, 0.0)
JVFUN(0, reset_max_delayed_usecs, (jack_client_t *c), (c),)
#endif // end USE_WEAK_JACK

230
extern/weakjack/weak_libjack.h vendored Normal file
View file

@ -0,0 +1,230 @@
/* runtime/weak dynamic JACK linking
*
* (C) 2014 Robin Gareus <robin@gareus.org>
*
* The wrapped jack API itself is
* (C) 2001 Paul Davis
* (C) 2004 Jack O'Quin
*
* 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 program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _WEAK_JACK_H
#define _WEAK_JACK_H
#ifdef __cplusplus
extern "C"
{
#endif
/** check if libjack is available
*
* return 0 if libjack is dynamically linked of was
* successfully dl-opened. Otherwise:
*
* -1: library was not initialized
* -2: libjack was not found
* > 0 bitwise flags:
* 1: a required function was not found in libjack
* 2: jack_client_open was not found in libjack
*/
int have_libjack(void);
#ifdef __cplusplus
}
#endif
#ifdef USE_WEAK_JACK
/* <jack/jack.h> */
#define jack_client_close WJACK_client_close
#define jack_get_client_name WJACK_get_client_name
#define jack_get_sample_rate WJACK_get_sample_rate
#define jack_get_buffer_size WJACK_get_buffer_size
#define jack_frames_since_cycle_start WJACK_frames_since_cycle_start
#define jack_frame_time WJACK_frame_time
#define jack_last_frame_time WJACK_last_frame_time
#define jack_get_time WJACK_get_time
#define jack_cpu_load WJACK_cpu_load
#define jack_is_realtime WJACK_is_realtime
#define jack_client_name_size WJACK_client_name_size
#define jack_set_freewheel WJACK_set_freewheel
#define jack_set_buffer_size WJACK_set_buffer_size
#define jack_on_shutdown WJACK_on_shutdown
#define jack_on_info_shutdown WJACK_on_info_shutdown
#define jack_set_process_callback WJACK_set_process_callback
#define jack_set_freewheel_callback WJACK_set_freewheel_callback
#define jack_set_buffer_size_callback WJACK_set_buffer_size_callback
#define jack_set_sample_rate_callback WJACK_set_sample_rate_callback
#define jack_set_port_registration_callback WJACK_set_port_registration_callback
#define jack_set_port_connect_callback WJACK_set_port_connect_callback
#define jack_set_graph_order_callback WJACK_set_graph_order_callback
#define jack_set_xrun_callback WJACK_set_xrun_callback
#define jack_set_latency_callback WJACK_set_latency_callback
#define jack_set_error_function WJACK_set_error_function
#define jack_set_info_function WJACK_set_info_function
#define jack_activate WJACK_activate
#define jack_deactivate WJACK_deactivate
#define jack_recompute_total_latencies WJACK_recompute_total_latencies
#define jack_port_get_total_latency WJACK_port_get_total_latency
#define jack_port_get_latency_range WJACK_port_get_latency_range
#define jack_port_set_latency_range WJACK_port_set_latency_range
#define jack_port_get_buffer WJACK_port_get_buffer
#define jack_port_request_monitor WJACK_port_request_monitor
#define jack_port_ensure_monitor WJACK_port_ensure_monitor
#define jack_port_monitoring_input WJACK_port_monitoring_input
#define jack_port_name WJACK_port_name
#define jack_port_short_name WJACK_port_short_name
#define jack_port_flags WJACK_port_flags
#define jack_port_is_mine WJACK_port_is_mine
#define jack_port_connected WJACK_port_connected
#define jack_get_ports WJACK_get_ports
#define jack_port_name_size WJACK_port_name_size
#define jack_port_type_size WJACK_port_type_size
#define jack_port_type_get_buffer_size WJACK_port_type_get_buffer_size
#define jack_port_by_name WJACK_port_by_name
#define jack_port_by_id WJACK_port_by_id
#define jack_port_set_name WJACK_port_set_name
#define jack_port_get_aliases WJACK_port_get_aliases
#define jack_port_rename WJACK_port_rename
#define jack_port_disconnect WJACK_port_disconnect
#define jack_port_register WJACK_port_register
#define jack_port_unregister WJACK_port_unregister
#define jack_port_type WJACK_port_type
#define jack_port_get_connections WJACK_port_get_connections
#define jack_port_get_all_connections WJACK_port_get_all_connections
#define jack_connect WJACK_connect
#define jack_disconnect WJACK_disconnect
#define jack_free WJACK_free
#define jack_cycle_wait WJACK_cycle_wait
#define jack_cycle_signal WJACK_cycle_signal
#define jack_set_process_thread WJACK_set_process_thread
#define jack_set_thread_init_callback WJACK_set_thread_init_callback
/* <jack/transport.h> */
#define jack_get_current_transport_frame WJACK_get_current_transport_frame
#define jack_transport_locate WJACK_transport_locate
#define jack_transport_start WJACK_transport_start
#define jack_transport_stop WJACK_transport_stop
#define jack_transport_query WJACK_transport_query
#define jack_set_sync_callback WJACK_set_sync_callback
#define jack_set_timebase_callback WJACK_set_timebase_callback
#define jack_release_timebase WJACK_release_timebase
/* <jack/midiport.h> */
#define jack_midi_get_event_count WJACK_midi_get_event_count
#define jack_midi_event_get WJACK_midi_event_get
#define jack_midi_event_write WJACK_midi_event_write
#define jack_midi_clear_buffer WJACK_midi_clear_buffer
/* <jack/session.h> */
#define jack_set_session_callback WJACK_set_session_callback
#define jack_session_reply WJACK_session_reply
#define jack_session_event_free WJACK_session_event_free
/* <jack/ringbuffer.h> */
#define jack_ringbuffer_create WJACK_ringbuffer_create
#define jack_ringbuffer_free WJACK_ringbuffer_free
#define jack_ringbuffer_reset WJACK_ringbuffer_reset
#define jack_ringbuffer_read_advance WJACK_ringbuffer_read_advance
#define jack_ringbuffer_write_advance WJACK_ringbuffer_write_advance
#define jack_ringbuffer_read_space WJACK_ringbuffer_read_space
#define jack_ringbuffer_write_space WJACK_ringbuffer_write_space
#define jack_ringbuffer_read WJACK_ringbuffer_read
#define jack_ringbuffer_write WJACK_ringbuffer_write
#define jack_ringbuffer_mlock WJACK_ringbuffer_mlock
#define jack_ringbuffer_get_read_vector WJACK_ringbuffer_get_read_vector
#define jack_ringbuffer_get_write_vector WJACK_ringbuffer_get_write_vector
#define jack_ringbuffer_peek WJACK_ringbuffer_peek
/* <jack/thread.h> */
#define jack_client_real_time_priority WJACK_client_real_time_priority
#define jack_client_max_real_time_priority WJACK_client_max_real_time_priority
#define jack_acquire_real_time_scheduling WJACK_acquire_real_time_scheduling
#define jack_client_create_thread WJACK_client_create_thread
#define jack_drop_real_time_scheduling WJACK_drop_real_time_scheduling
#define jack_client_stop_thread WJACK_client_stop_thread
#define jack_client_kill_thread WJACK_client_kill_thread
#define jack_set_thread_creator WJACK_set_thread_creator
#define jack_client_open WJACK_client_client_openXXX
#ifndef NO_JACK_METADATA
/* <jack/metadata.h> */
#define jack_get_uuid_for_client_name WJACK_get_uuid_for_client_name
#define jack_get_client_name_by_uuid WJACK_get_client_name_by_uuid
#define jack_port_uuid WJACK_port_uuid
#define jack_set_property WJACK_set_property
#define jack_get_property WJACK_get_property
#define jack_free_description WJACK_free_description
#define jack_get_properties WJACK_get_properties
#define jack_get_all_properties WJACK_get_all_properties
#define jack_remove_property WJACK_remove_property
#define jack_remove_properties WJACK_remove_properties
#define jack_remove_all_properties WJACK_remove_all_properties
#define jack_set_property_change_callback WJACK_set_property_change_callback
#endif
/* <jack/statistics.h> */
#define jack_get_max_delayed_usecs WJACK_get_max_delayed_usecs
#define jack_get_xrun_delayed_usecs WJACK_get_xrun_delayed_usecs
#define jack_reset_max_delayed_usecs WJACK_reset_max_delayed_usecs
#endif // end USE_WEAK_JACK
#include <jack/jack.h>
#include <jack/transport.h>
#include <jack/ringbuffer.h>
#include <jack/midiport.h>
#include <jack/session.h>
#include <jack/thread.h>
#include <jack/statistics.h>
#ifndef NO_JACK_METADATA
#include <jack/metadata.h>
#endif
#ifdef USE_WEAK_JACK
#undef jack_client_open
/* var-args hack */
#ifdef __cplusplus
extern "C" {
#endif
void (* WJACK_get_client_open (void)) (void);
jack_client_t * WJACK_no_client_open (const char *client_name, jack_options_t options, jack_status_t *status, ...);
#ifdef __cplusplus
}
#endif
#define jack_client_open(...) \
( \
(WJACK_get_client_open() != NULL) \
? ((jack_client_t* (*)(const char *, jack_options_t, jack_status_t *, ...))(WJACK_get_client_open()))(__VA_ARGS__) \
: WJACK_no_client_open(__VA_ARGS__) \
)
#endif // end USE_WEAK_JACK
#endif // _WEAK_JACK_H

11
src/audio/jack.cpp
View file

@ -198,10 +198,19 @@ String TAAudioJACK::printStatus(jack_status_t status) {
bool TAAudioJACK::init(TAAudioDesc& request, TAAudioDesc& response) { bool TAAudioJACK::init(TAAudioDesc& request, TAAudioDesc& response) {
if (initialized) return false; if (initialized) return false;
if (jack_client_open==NULL) { int haveJACK=have_libjack();
if (haveJACK==-1) {
logE("JACK library not initialized!");
return false;
}
if (haveJACK==-2) {
logE("JACK not installed!"); logE("JACK not installed!");
return false; return false;
} }
if (haveJACK!=0) {
logE("JACK symbol error!");
return false;
}
desc=request; desc=request;
desc.outFormat=TA_AUDIO_FORMAT_F32; desc.outFormat=TA_AUDIO_FORMAT_F32;

3
src/audio/jack.h
View file

@ -18,8 +18,7 @@
*/ */
#include "taAudio.h" #include "taAudio.h"
#include <jack/weakjack.h> #include "../extern/weakjack/weak_libjack.h"
#include <jack/jack.h>
class TAAudioJACK: public TAAudio { class TAAudioJACK: public TAAudio {
jack_client_t* ac; jack_client_t* ac;