// Runs on a SECONDARY thread
@Override
public void processFrame(android.media.audiofx.Visualizer visualizer, boolean playing) {
if (!lock.lockLowPriority()) return;
try {
if (transmitting) {
// We use ignoreInput, because sampling 1024, 60 times a seconds,
// is useless, as there are only 44100 or 48000 samples in one second
if (ignoreInput == 0) {
// WE MUST NEVER call any method from visualizer
// while the player is not actually playing
if (!playing) Arrays.fill(waveform, 0, 1024, (byte) 0x80);
else visualizer.getWaveForm(waveform);
}
if (framesToSkip <= 0) {
framesToSkip = framesToSkipOriginal;
bt.getOutputStream()
.write(
waveform,
0,
SimpleVisualizerJni.commonProcess(waveform, size | ignoreInput | dataType));
packetsSent++;
} else {
SimpleVisualizerJni.commonProcess(waveform, ignoreInput | dataType);
framesToSkip--;
}
ignoreInput ^= IGNORE_INPUT;
}
int stateI = state.getAndSet(0);
if (stateI != 0) {
// Build and send a Player state message
waveform[0] = StartOfHeading;
waveform[1] = (byte) MessagePlayerState;
waveform[3] = 0;
int len = 0;
len = writeByte(waveform, len, stateI & 3);
len = writeByte(waveform, len, stateVolume);
stateI = stateSongPosition;
len = writeByte(waveform, len, stateI);
len = writeByte(waveform, len, stateI >> 8);
len = writeByte(waveform, len, stateI >> 16);
len = writeByte(waveform, len, stateI >> 24);
stateI = stateSongLength;
len = writeByte(waveform, len, stateI);
len = writeByte(waveform, len, stateI >> 8);
len = writeByte(waveform, len, stateI >> 16);
len = writeByte(waveform, len, stateI >> 24);
waveform[2] = (byte) (len << 1);
waveform[4 + len] = EndOfTransmission;
bt.getOutputStream().write(waveform, 0, len + 5);
packetsSent++;
}
} catch (IOException ex) {
// Bluetooth error
if (connected) MainHandler.sendMessage(this, MSG_BLUETOOTH_RXTX_ERROR);
} catch (Throwable ex) {
ex.printStackTrace();
} finally {
lock.releaseLowPriority();
}
}
public void destroy() {
if (waveform != null) {
version++;
connected = false;
transmitting = false;
Player.bluetoothVisualizerState = Player.BLUETOOTH_VISUALIZER_STATE_INITIAL;
lock.lockHighPriority();
try {
waveform = null;
if (bt != null) {
bt.destroy();
bt = null;
}
} finally {
lock.releaseHighPriority();
}
if (fxVisualizer != null) {
fxVisualizer.destroy();
fxVisualizer = null;
}
Player.stopBluetoothVisualizer();
BackgroundActivityMonitor.bluetoothEnded();
}
}