private boolean mix(short[] outBuffer, int bufferSize) {
List<AudioOutputSpeech> mix = new ArrayList<AudioOutputSpeech>();
List<AudioOutputSpeech> del = new ArrayList<AudioOutputSpeech>();
// TODO add priority speaker support
for (AudioOutputSpeech speech : mAudioOutputs.values()) {
if (!speech.needSamples(bufferSize)) del.add(speech);
else mix.add(speech);
}
if (!mix.isEmpty()) {
for (AudioOutputSpeech speech : mix) {
float[] buffer = speech.getBuffer();
for (int i = 0; i < bufferSize; i++) {
short pcm = (short) (buffer[i] * Short.MAX_VALUE); // Convert float to short
pcm = (short) Math.max(Math.min(pcm, Short.MAX_VALUE), Short.MIN_VALUE); // Clip audio
outBuffer[i] += pcm;
}
}
}
for (AudioOutputSpeech speech : del) mAudioOutputs.remove(speech.getSession());
return !mix.isEmpty();
}
@Override
public void messageVoiceData(byte[] data) {
if (!mRunning) return;
JumbleUDPMessageType dataType = JumbleUDPMessageType.values()[data[0] >> 5 & 0x7];
int msgFlags = data[0] & 0x1f;
byte[] voiceData = new byte[data.length - 1];
System.arraycopy(data, 1, voiceData, 0, voiceData.length);
PacketDataStream pds = new PacketDataStream(voiceData, voiceData.length);
int session = (int) pds.readLong();
User user = getService().getUserHandler().getUser(session);
if (user != null && !user.isLocalMuted()) {
// TODO check for whispers here
int seq = (int) pds.readLong();
ByteBuffer packet = ByteBuffer.allocate(pds.left() + 1);
packet.put((byte) msgFlags);
packet.put(pds.dataBlock(pds.left()));
AudioOutputSpeech aop = mAudioOutputs.get(session);
if (aop != null && aop.getCodec() != dataType) {
aop.destroy();
aop = null;
}
if (aop == null) {
aop = new AudioOutputSpeech(session, dataType, this);
mAudioOutputs.put(session, aop);
}
aop.addFrameToBuffer(packet.array(), seq);
mLastPacket = System.nanoTime();
synchronized (mInactiveLock) {
mInactiveLock.notify();
}
}
}
public void stopPlaying() {
mRunning = false;
mThread = null;
for (AudioOutputSpeech s : mAudioOutputs.values()) s.destroy();
}
