void streamMusic(void* arg)
{
clearBottomScreen();
debug("play_buffer start\n");
stream_filename* strm_file = static_cast<stream_filename*>(arg);
VGMSTREAM* vgmstream = strm_file->stream;
if (!vgmstream)
return;
int channel = 0;
ndspSetOutputMode(NDSP_OUTPUT_STEREO);
for (int i = 0; i < vgmstream->channels; i++)
{
ndspChnReset(channel + i);
ndspChnSetInterp(channel + i, NDSP_INTERP_LINEAR);
ndspChnSetRate(channel + i, vgmstream->sample_rate / vgmstream->channels);
ndspChnSetFormat(channel + i, NDSP_FORMAT_STEREO_PCM16);
}
std::vector<ndspWaveBuf> waveBufs1(vgmstream->channels);
std::vector<ndspWaveBuf> waveBufs2(vgmstream->channels);
for (auto& waveBuf : waveBufs1)
memset(&waveBuf, 0, sizeof(ndspWaveBuf));
for (auto& waveBuf : waveBufs2)
memset(&waveBuf, 0, sizeof(ndspWaveBuf));
debug("play_buffer signal produce\n");
svcSignalEvent(bufferReadyProduceRequest);
// Wait for 2 buffers to play
debug("play_buffer wait data 1\n");
svcWaitSynchronization(bufferReadyConsumeRequest, U64_MAX);
svcClearEvent(bufferReadyConsumeRequest);
debug("play_buffer signal produce\n");
svcSignalEvent(bufferReadyProduceRequest);
debug("play_buffer wait data 2\n");
svcWaitSynchronization(bufferReadyConsumeRequest, U64_MAX);
svcClearEvent(bufferReadyConsumeRequest);
// Play it
debug("play_buffer play\n");
playSoundChannels(channel, playBuffer1.samples, false, playBuffer1.channels, waveBufs1);
playSoundChannels(channel, playBuffer2.samples, false, playBuffer2.channels, waveBufs2);
stream_buffer* buffer = &playBuffer2;
stream_buffer* playingBuf = &playBuffer1;
std::vector<ndspWaveBuf>* waveBuf = &waveBufs2;
std::vector<ndspWaveBuf>* playingWaveBuf = &waveBufs1;
debug("play_buffer signal produce\n");
svcSignalEvent(bufferReadyProduceRequest);
while (runThreads)
{
if (playingWaveBuf->at(0).status == NDSP_WBUF_DONE) {
debug("play_buffer wait data\n");
// Wait for sound data here
svcWaitSynchronization(bufferReadyConsumeRequest, U64_MAX);
svcClearEvent(bufferReadyConsumeRequest);
// Flip buffers
if (buffer == &playBuffer1)
{
buffer = &playBuffer2;
playingBuf = &playBuffer1;
waveBuf = &waveBufs2;
playingWaveBuf = &waveBufs1;
}
else
{
buffer = &playBuffer1;
playingBuf = &playBuffer2;
waveBuf = &waveBufs1;
playingWaveBuf = &waveBufs2;
}
debug("play_buffer play\n");
playSoundChannels(channel, buffer->samples, false, buffer->channels, *waveBuf);
debug("play_buffer signal produce\n");
svcSignalEvent(bufferReadyProduceRequest);
}
}
for (int i = 0; i < vgmstream->channels; i++)
{
ndspChnWaveBufClear(channel + i);
}
debug("play_buffer done\n");
}
//----------------------------------------------------------------------------
int main(int argc, char **argv) {
//----------------------------------------------------------------------------
PrintConsole topScreen;
ndspWaveBuf waveBuf[2];
gfxInitDefault();
consoleInit(GFX_TOP, &topScreen);
consoleSelect(&topScreen);
printf("libctru streaming audio\n");
stb_vorbis_info info;
int error;
vorbisFile = stb_vorbis_open_filename("/mau5.ogg", &error, NULL);
info = stb_vorbis_get_info(vorbisFile);
Samples = info.sample_rate;
u32 *audioBuffer = (u32*)linearAlloc(Samples*sizeof(s16)*2);
bool fillBlock = false;
ndspInit();
ndspSetOutputMode(NDSP_OUTPUT_STEREO);
ndspChnSetInterp(0, NDSP_INTERP_LINEAR);
ndspChnSetRate(0, Samples);
ndspChnSetFormat(0, NDSP_FORMAT_STEREO_PCM16);
float mix[12];
memset(mix, 0, sizeof(mix));
mix[0] = 1.0;
mix[1] = 1.0;
ndspChnSetMix(0, mix);
int note = 4;
memset(waveBuf,0,sizeof(waveBuf));
waveBuf[0].data_vaddr = &audioBuffer[0];
waveBuf[0].nsamples = Samples;
waveBuf[1].data_vaddr = &audioBuffer[Samples];
waveBuf[1].nsamples = Samples;
ndspChnWaveBufAdd(0, &waveBuf[0]);
ndspChnWaveBufAdd(0, &waveBuf[1]);
printf("Press up/down to change tone\n");
while(aptMainLoop()) {
gfxSwapBuffers();
gfxFlushBuffers();
gspWaitForVBlank();
hidScanInput();
u32 kDown = hidKeysDown();
if (kDown & KEY_START)
break; // break in order to return to hbmenu
if (waveBuf[fillBlock].status == NDSP_WBUF_DONE) {
fill_buffer(waveBuf[fillBlock].data_pcm16, waveBuf[fillBlock].nsamples);
ndspChnWaveBufAdd(0, &waveBuf[fillBlock]);
fillBlock = !fillBlock;
}
}
ndspExit();
linearFree(audioBuffer);
gfxExit();
return 0;
}
