retro-core: Removed shared audio buffer

It wasn't used by all apps, wasteful.

Author: ducalex

retro-core/main/main.c

@@ -1,6 +1,5 @@
 #include "shared.h"
 
-rg_audio_sample_t audioBuffer[AUDIO_BUFFER_LENGTH];
 rg_app_t *app;
 
 

retro-core/main/main_gbc.c

@@ -267,7 +267,7 @@ void gbc_main(void)
         RG_PANIC("Emulator init failed!");
 
     gnuboy_set_framebuffer(currentUpdate->data);
-    gnuboy_set_soundbuffer((void *)audioBuffer, sizeof(audioBuffer) / 2);
+    gnuboy_set_soundbuffer(malloc(AUDIO_BUFFER_LENGTH * 4), AUDIO_BUFFER_LENGTH);
 
     // Load ROM
     if (rg_extension_match(app->romPath, "zip"))

retro-core/main/main_lynx.cpp

@@ -210,7 +210,7 @@ extern "C" void lynx_main(void)
     }
 
     gPrimaryFrameBuffer = (UBYTE*)currentUpdate->data;
-    gAudioBuffer = (SWORD*)&audioBuffer;
+    gAudioBuffer = (SWORD*)malloc(AUDIO_BUFFER_LENGTH * 4);
     gAudioEnabled = 1;
 
     if (app->bootFlags & RG_BOOT_RESUME)
@@ -264,7 +264,7 @@ extern "C" void lynx_main(void)
         rg_system_set_tick_rate(AUDIO_SAMPLE_RATE / (gAudioBufferPointer / 2));
         rg_system_tick(rg_system_timer() - startTime);
 
-        rg_audio_submit(audioBuffer, gAudioBufferPointer >> 1);
+        rg_audio_submit((const rg_audio_frame_t *)gAudioBuffer, gAudioBufferPointer / 2);
 
         // See if we need to skip a frame to keep up
         if (skipFrames == 0)

retro-core/main/main_pce.c

@@ -135,11 +135,12 @@ static void audioTask(void *arg)
     RG_LOGI("task started. numSamples=%d.", (int)numSamples);
     while (1)
     {
+        rg_audio_sample_t samples[numSamples];
         // TODO: Clearly we need to add a better way to remain in sync with the main task...
         while (emulationPaused)
             rg_task_yield();
-        psg_update((int16_t *)audioBuffer, numSamples, 0xFF);
-        rg_audio_submit(audioBuffer, numSamples);
+        psg_update((int16_t *)samples, numSamples, 0xFF);
+        rg_audio_submit(samples, numSamples);
     }
 }
 

retro-core/main/main_snes.c

@@ -68,6 +68,7 @@ static const char *SNES_BUTTONS[] = {
 
 static rg_surface_t *updates[2];
 static rg_surface_t *currentUpdate;
+static rg_audio_sample_t *audioBuffer;
 
 static bool apu_enabled = true;
 static bool lowpass_filter = false;
@@ -305,6 +306,8 @@ void snes_main(void)
     updates[0]->height = SNES_HEIGHT;
     currentUpdate = updates[0];
 
+    audioBuffer = (rg_audio_sample_t *)malloc(AUDIO_BUFFER_LENGTH * 4);
+
     update_keymap(rg_settings_get_number(NS_APP, SETTING_KEYMAP, 0));
 
     Settings.CyclesPercentage = 100;

retro-core/main/shared.h

@@ -7,7 +7,6 @@
 #define AUDIO_SAMPLE_RATE   (32000)
 #define AUDIO_BUFFER_LENGTH (AUDIO_SAMPLE_RATE / 50 + 1)
 
-extern rg_audio_sample_t audioBuffer[AUDIO_BUFFER_LENGTH];
 extern rg_app_t *app;
 
 extern uint8_t shared_memory_block_64K[0x10000];