static int audioSetVolume(lua_State *L) { // love.audio.setVolume()
float vol = luaL_checknumber(L, 1);
if (vol > 1) vol = 1;
if (vol < 0) vol = 0;
float mix[12];
for (int i=0; i<=3; i++) mix[i] = vol;
for (int i=0; i<=23; i++) ndspChnSetMix(i, mix);
return 0;
}
//----------------------------------------------------------------------------
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;
}
