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Wii: Initial, very broken audio support

This commit is contained in:
Jeffrey Pfau 2015-08-06 00:16:24 -07:00
parent eb0366b61e
commit dabd72ac13
1 changed files with 37 additions and 2 deletions
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39
src/platform/wii/main.c
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@ -25,6 +25,7 @@ static void GBAWiiFrame(void);
static bool GBAWiiLoadGame(const char* path);
static void _postVideoFrame(struct GBAAVStream*, struct GBAVideoRenderer* renderer);
static void _audioDMA(void);
static struct GBA gba;
static struct ARMCore cpu;
@ -41,9 +42,18 @@ static GXTexObj tex;
static void* framebuffer[2];
static int whichFb = 0;
static struct GBAStereoSample audioBuffer[2][SAMPLES] __attribute__ ((__aligned__(32)));
static size_t audioBufferSize = 0;
static int currentAudioBuffer = 0;
int main() {
VIDEO_Init();
PAD_Init();
AUDIO_Init(0);
AUDIO_SetDSPSampleRate(AI_SAMPLERATE_48KHZ);
AUDIO_RegisterDMACallback(_audioDMA);
memset(audioBuffer, 0, sizeof(audioBuffer));
#if !defined(COLOR_16_BIT) && !defined(COLOR_5_6_5)
#error This pixel format is unsupported. Please use -DCOLOR_16-BIT -DCOLOR_5_6_5
@ -140,8 +150,8 @@ int main() {
GBAAudioResizeBuffer(&gba.audio, SAMPLES);
#if RESAMPLE_LIBRARY == RESAMPLE_BLIP_BUF
blip_set_rates(gba.audio.left, GBA_ARM7TDMI_FREQUENCY, 44100);
blip_set_rates(gba.audio.right, GBA_ARM7TDMI_FREQUENCY, 44100);
blip_set_rates(gba.audio.left, GBA_ARM7TDMI_FREQUENCY, 48000);
blip_set_rates(gba.audio.right, GBA_ARM7TDMI_FREQUENCY, 48000);
#endif
if (!GBAWiiLoadGame("/rom.gba")) {
@ -149,6 +159,21 @@ int main() {
}
while (true) {
#if RESAMPLE_LIBRARY == RESAMPLE_BLIP_BUF
int available = blip_samples_avail(gba.audio.left);
if (available + audioBufferSize > SAMPLES) {
available = SAMPLES - audioBufferSize;
}
if (available > 0) {
blip_read_samples(gba.audio.left, &audioBuffer[currentAudioBuffer][audioBufferSize].left, available, true);
blip_read_samples(gba.audio.right, &audioBuffer[currentAudioBuffer][audioBufferSize].right, available, true);
audioBufferSize += available;
}
if (audioBufferSize == SAMPLES && !AUDIO_GetDMAEnableFlag()) {
_audioDMA();
AUDIO_StartDMA();
}
#endif
PAD_ScanPads();
u16 padkeys = PAD_ButtonsHeld(0);
int keys = 0;
@ -284,3 +309,13 @@ static void _postVideoFrame(struct GBAAVStream* stream, struct GBAVideoRenderer*
UNUSED(renderer);
GBAWiiFrame();
}
static void _audioDMA(void) {
if (!audioBufferSize) {
return;
}
currentAudioBuffer = !currentAudioBuffer;
DCFlushRange(audioBuffer[currentAudioBuffer], audioBufferSize * sizeof(struct GBAStereoSample));
AUDIO_InitDMA((u32) audioBuffer[currentAudioBuffer], audioBufferSize * sizeof(struct GBAStereoSample));
audioBufferSize = 0;
}