From cbdf23efa77e1495eadecf5110dca1575d47197f Mon Sep 17 00:00:00 2001
From: tildearrow <tildearrow@protonmail.com>
Date: Sun, 25 Sep 2022 01:20:08 -0500
Subject: [PATCH] allow loading .brr samples directly

---
 src/engine/engine.cpp | 48 +++++++++++++++++++++++++++++++++++++------
 src/gui/gui.cpp       |  4 ++--
 src/gui/settings.cpp  |  1 +
 3 files changed, 45 insertions(+), 8 deletions(-)

diff --git a/src/engine/engine.cpp b/src/engine/engine.cpp
index f3c0154b8..a2783c391 100644
--- a/src/engine/engine.cpp
+++ b/src/engine/engine.cpp
@@ -2649,7 +2649,7 @@ DivSample* DivEngine::sampleFromFile(const char* path) {
       }
       extS+=i;
     }
-    if (extS==".dmc") { // read as .dmc
+    if (extS==".dmc" || extS==".brr") { // read as .dmc or .brr
       size_t len=0;
       DivSample* sample=new DivSample;
       sample->name=stripPath;
@@ -2696,12 +2696,48 @@ DivSample* DivEngine::sampleFromFile(const char* path) {
         return NULL;
       }
 
-      sample->rate=33144;
-      sample->centerRate=33144;
-      sample->depth=DIV_SAMPLE_DEPTH_1BIT_DPCM;
-      sample->init(len*8);
+      if (extS==".dmc") {
+        sample->rate=33144;
+        sample->centerRate=33144;
+        sample->depth=DIV_SAMPLE_DEPTH_1BIT_DPCM;
+        sample->init(len*8);
+      } else if (extS==".brr") {
+        sample->rate=32000;
+        sample->centerRate=32000;
+        sample->depth=DIV_SAMPLE_DEPTH_BRR;
+        sample->init(16*(len/9));
+      } else {
+        fclose(f);
+        BUSY_END;
+        lastError="wait... is that right? no I don't think so...";
+        delete sample;
+        return NULL;
+      }
 
-      if (fread(sample->dataDPCM,1,len,f)==0) {
+      unsigned char* dataBuf=sample->dataDPCM;
+      if (extS==".brr") {
+        dataBuf=sample->dataBRR;
+        if ((len%9)==2) {
+          // ignore loop position
+          fseek(f,2,SEEK_SET);
+          len-=2;
+          if (len==0) {
+            fclose(f);
+            BUSY_END;
+            lastError="BRR sample is empty!";
+            delete sample;
+            return NULL;
+          }
+        } else if ((len%9)!=0) {
+          fclose(f);
+          BUSY_END;
+          lastError="possibly corrupt BRR sample!";
+          delete sample;
+          return NULL;
+        }
+      }
+
+      if (fread(dataBuf,1,len,f)==0) {
         fclose(f);
         BUSY_END;
         lastError=fmt::sprintf("could not read file! (%s)",strerror(errno));
diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index 190fdec05..edc89ac14 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -1556,9 +1556,9 @@ void FurnaceGUI::openFileDialog(FurnaceGUIFileDialogs type) {
       if (!dirExists(workingDirSample)) workingDirSample=getHomeDir();
       hasOpened=fileDialog->openLoad(
         "Load Sample",
-        {"compatible files", "*.wav *.dmc",
+        {"compatible files", "*.wav *.dmc *.brr",
          "all files", ".*"},
-        "compatible files{.wav,.dmc},.*",
+        "compatible files{.wav,.dmc,.brr},.*",
         workingDirSample,
         dpiScale
       );
diff --git a/src/gui/settings.cpp b/src/gui/settings.cpp
index b52b648e3..cc3f044bf 100644
--- a/src/gui/settings.cpp
+++ b/src/gui/settings.cpp
@@ -3296,6 +3296,7 @@ void FurnaceGUI::applyUISettings(bool updateFonts) {
   ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtension,".dmw",uiColors[GUI_COLOR_FILE_WAVE],ICON_FA_FILE);
   ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtension,".wav",uiColors[GUI_COLOR_FILE_AUDIO],ICON_FA_FILE_AUDIO_O);
   ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtension,".dmc",uiColors[GUI_COLOR_FILE_AUDIO],ICON_FA_FILE_AUDIO_O);
+  ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtension,".brr",uiColors[GUI_COLOR_FILE_AUDIO],ICON_FA_FILE_AUDIO_O);
   ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtension,".vgm",uiColors[GUI_COLOR_FILE_VGM],ICON_FA_FILE_AUDIO_O);
   ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtension,".zsm",uiColors[GUI_COLOR_FILE_ZSM],ICON_FA_FILE_AUDIO_O);
   ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtension,".ttf",uiColors[GUI_COLOR_FILE_FONT],ICON_FA_FONT);