void Sound::play()
{
if (!m_buffer || m_buffer->getSampleCount() == 0)
return;
if (getStatus() == Playing)
stop();
m_channel = 0;
while (m_channel < 24 && ndspChnIsPlaying(m_channel))
m_channel++;
if (m_channel == 24) {
err() << "Sound::play() failed because all channels are in use." << std::endl;
m_channel = -1;
return;
}
setPlayingOffset(m_pauseOffset);
if (m_pauseOffset != Time::Zero)
m_pauseOffset = Time::Zero;
u32 size = sizeof(Int16) * m_buffer->getSampleCount();
ndspChnReset(m_channel);
ndspChnSetInterp(m_channel, NDSP_INTERP_POLYPHASE);
ndspChnSetRate(m_channel, float(m_buffer->getSampleRate()));
ndspChnSetFormat(m_channel, (m_buffer->getChannelCount() == 1) ? NDSP_FORMAT_MONO_PCM16 : NDSP_FORMAT_STEREO_PCM16);
DSP_FlushDataCache((u8*)m_buffer->getSamples(), size);
ndspChnWaveBufAdd(m_channel, &m_ndspWaveBuf);
}
void streamWAV(void* arg){
// Fetching cachePackage struct from main thread
cachePackage* pack = (cachePackage*)arg;
while(1) {
// Waiting for updateStream event
svcWaitSynchronization(updateStream, U64_MAX);
svcClearEvent(updateStream);
// Close the thread if closeStream event received
if(closeStream){
closeStream = false;
svcExitThread();
}
// Check if the current stream is paused or not
Music* src = pack->song;
Socket* Client = pack->client;
if (src->isPlaying){
// Check if a free buffer is available
if (src->wavebuf2 == NULL){
// Check if file reached EOF
if (src->audio_pointer >= src->size){
// Check if playback ended
if (!ndspChnIsPlaying(src->ch)){
src->isPlaying = false;
src->tick = (osGetTime()-src->tick);
}
continue;
}
// Swap audiobuffers
u8* tmp = src->audiobuf;
src->audiobuf = src->audiobuf2;
src->audiobuf2 = tmp;
// Create a new block for DSP service
u32 bytesRead;
src->wavebuf2 = (ndspWaveBuf*)calloc(1,sizeof(ndspWaveBuf));
createDspBlock(src->wavebuf2, src->bytepersample, src->mem_size, 0, (u32*)src->audiobuf);
populatePurgeTable(src, src->wavebuf2);
ndspChnWaveBufAdd(src->ch, src->wavebuf2);
socketSend(Client, "exec2:0000");
u32 processedBytes = 0;
netSize = 0;
while (netSize <= 0) heapRecv(Client, 2048);
while (processedBytes < (src->mem_size / 2)){
if (netSize <= 0){
heapRecv(Client, 2048);
continue;
}
if (strncmp((char*)netBuffer, "EOF", 3) == 0) break;
memcpy(&streamCache[songPointer + processedBytes], netBuffer, netSize);
processedBytes = processedBytes + netSize;
heapRecv(Client, 2048);
}
memcpy(src->audiobuf, &streamCache[songPointer], src->mem_size);
if (songPointer == 0) songPointer = src->mem_size / 2;
else songPointer = 0;
src->audio_pointer = src->audio_pointer + src->mem_size;
// Changing endianess if Big Endian
if (src->big_endian){
u64 i = 0;
while (i < src->mem_size){
u8 tmp = src->audiobuf[i];
src->audiobuf[i] = src->audiobuf[i+1];
src->audiobuf[i+1] = tmp;
i=i+2;
}
}
}
// Check if a block playback is finished
u32 curSample = ndspChnGetSamplePos(src->ch);
if (src->lastCheck > curSample){
// Prepare next block
src->wavebuf = src->wavebuf2;
src->wavebuf2 = NULL;
}
// Update sample position tick
src->lastCheck = curSample;
}
}
}