diff --git a/src/platform/3ds/main.c b/src/platform/3ds/main.c index 4648eced7..756d9fc4a 100644 --- a/src/platform/3ds/main.c +++ b/src/platform/3ds/main.c @@ -18,7 +18,8 @@ #include <3ds.h> #include -#define AUDIO_SAMPLES 0x800 +#define AUDIO_SAMPLES 0x80 +#define AUDIO_SAMPLE_BUFFER (AUDIO_SAMPLES * 32) FS_archive sdmcArchive; @@ -35,6 +36,7 @@ static struct GBAVideoSoftwareRenderer renderer; static struct GBAAVStream stream; static int16_t* audioLeft = 0; static int16_t* audioRight = 0; +static size_t audioPos = 0; static sf2d_texture* tex; extern bool allocateRomBuffer(void); @@ -81,13 +83,16 @@ static void _gameLoaded(struct GBAGUIRunner* runner) { } #if RESAMPLE_LIBRARY == RESAMPLE_BLIP_BUF - double ratio = GBAAudioCalculateRatio(1, 60, 1); - blip_set_rates(runner->context.gba->audio.left, GBA_ARM7TDMI_FREQUENCY, 0x8000 * ratio); - blip_set_rates(runner->context.gba->audio.right, GBA_ARM7TDMI_FREQUENCY, 0x8000 * ratio); + double ratio = GBAAudioCalculateRatio(1, 59.826, 1); + blip_set_rates(runner->context.gba->audio.left, GBA_ARM7TDMI_FREQUENCY, 44100 * ratio); + blip_set_rates(runner->context.gba->audio.right, GBA_ARM7TDMI_FREQUENCY, 44100 * ratio); #endif if (hasSound) { - memset(audioLeft, 0, AUDIO_SAMPLES * sizeof(int16_t)); - memset(audioRight, 0, AUDIO_SAMPLES * sizeof(int16_t)); + memset(audioLeft, 0, AUDIO_SAMPLE_BUFFER * sizeof(int16_t)); + memset(audioRight, 0, AUDIO_SAMPLE_BUFFER * sizeof(int16_t)); + audioPos = 0; + csndPlaySound(0x8, SOUND_REPEAT | SOUND_FORMAT_16BIT, 44100, 1.0, -1.0, audioLeft, audioLeft, AUDIO_SAMPLE_BUFFER * sizeof(int16_t)); + csndPlaySound(0x9, SOUND_REPEAT | SOUND_FORMAT_16BIT, 44100, 1.0, 1.0, audioRight, audioRight, AUDIO_SAMPLE_BUFFER * sizeof(int16_t)); } } @@ -184,21 +189,24 @@ static int32_t _readGyroZ(struct GBARotationSource* source) { static void _postAudioBuffer(struct GBAAVStream* stream, struct GBAAudio* audio) { UNUSED(stream); - memset(audioLeft, 0, AUDIO_SAMPLES * sizeof(int16_t)); - memset(audioRight, 0, AUDIO_SAMPLES * sizeof(int16_t)); #if RESAMPLE_LIBRARY == RESAMPLE_BLIP_BUF - blip_read_samples(audio->left, audioLeft, AUDIO_SAMPLES, false); - blip_read_samples(audio->right, audioRight, AUDIO_SAMPLES, false); + blip_read_samples(audio->left, &audioLeft[audioPos], AUDIO_SAMPLES, false); + blip_read_samples(audio->right, &audioRight[audioPos], AUDIO_SAMPLES, false); #elif RESAMPLE_LIBRARY == RESAMPLE_NN - GBAAudioCopy(audio, audioLeft, audioRight, AUDIO_SAMPLES); + GBAAudioCopy(audio, &audioLeft[audioPos], &audioRight[audioPos], AUDIO_SAMPLES); #endif - GSPGPU_FlushDataCache(0, (void*) audioLeft, AUDIO_SAMPLES * sizeof(int16_t)); - GSPGPU_FlushDataCache(0, (void*) audioRight, AUDIO_SAMPLES * sizeof(int16_t)); - csndPlaySound(0x8, SOUND_ONE_SHOT | SOUND_FORMAT_16BIT, 0x8000, 1.0, -1.0, audioLeft, audioLeft, AUDIO_SAMPLES * sizeof(int16_t)); - csndPlaySound(0x9, SOUND_ONE_SHOT | SOUND_FORMAT_16BIT, 0x8000, 1.0, 1.0, audioRight, audioRight, AUDIO_SAMPLES * sizeof(int16_t)); - CSND_SetPlayState(0x8, 1); - CSND_SetPlayState(0x9, 1); - csndExecCmds(false); + GSPGPU_FlushDataCache(0, (void*) &audioLeft[audioPos], AUDIO_SAMPLES * sizeof(int16_t)); + GSPGPU_FlushDataCache(0, (void*) &audioRight[audioPos], AUDIO_SAMPLES * sizeof(int16_t)); + audioPos = (audioPos + AUDIO_SAMPLES) % AUDIO_SAMPLE_BUFFER; + if (audioPos == AUDIO_SAMPLE_BUFFER / 2) { + u8 playing = 0; + csndIsPlaying(0x8, &playing); + if (!playing) { + CSND_SetPlayState(0x8, 1); + CSND_SetPlayState(0x9, 1); + csndExecCmds(false); + } + } } int main() { @@ -218,8 +226,8 @@ int main() { } if (hasSound) { - audioLeft = linearAlloc(AUDIO_SAMPLES * sizeof(int16_t)); - audioRight = linearAlloc(AUDIO_SAMPLES * sizeof(int16_t)); + audioLeft = linearAlloc(AUDIO_SAMPLE_BUFFER * sizeof(int16_t)); + audioRight = linearAlloc(AUDIO_SAMPLE_BUFFER * sizeof(int16_t)); } sf2d_init();