public void setActive(boolean active) {
this.active = active;
Visualizer visualizer = getVizualiser();
if (visualizer == null) {
return;
}
int captureRate = Math.min(PREFERRED_CAPTURE_RATE_MILLIHERTZ, Visualizer.getMaxCaptureRate());
if (active) {
visualizer.setDataCaptureListener(
new Visualizer.OnDataCaptureListener() {
@Override
public void onWaveFormDataCapture(
Visualizer visualizer, byte[] waveform, int samplingRate) {
updateVisualizer(waveform);
}
@Override
public void onFftDataCapture(Visualizer visualizer, byte[] fft, int samplingRate) {}
},
captureRate,
true,
false);
} else {
visualizer.setDataCaptureListener(null, captureRate, false, false);
}
visualizer.setEnabled(active);
invalidate();
}
public EqualizerController(View rootView, Context context) {
mView = rootView;
mContext = context;
mPlayer = MediaPlayer.create(context, R.raw.testmp3);
setupVisualizerUI();
mEqualizer = new Equalizer(0, mPlayer.getAudioSessionId());
// mEqualizer = new Equalizer(0, 0);
mNumFrequencyBands = mEqualizer.getNumberOfBands();
mLowerBandLevel = mEqualizer.getBandLevelRange()[0];
mUpperBandLevel = mEqualizer.getBandLevelRange()[1];
mEqualizer.setEnabled(true);
setupEqualizerUI();
mVisualizer.setEnabled(true);
// When the stream ends, we don't need to collect any more data. We
// don't do this in
// setupVisualizerFxAndUI because we likely want to have more,
// non-Visualizer related code
// in this callback.
mPlayer.setOnCompletionListener(
new MediaPlayer.OnCompletionListener() {
public void onCompletion(MediaPlayer mediaPlayer) {
mVisualizer.setEnabled(false);
}
});
mPlayer.start();
}
/**
* Links the visualizer to a player
*
* @param player - MediaPlayer instance to link to
*/
public void link(MediaPlayer player) {
if (player == null) {
throw new NullPointerException("Cannot link to null MediaPlayer");
}
// Create the Visualizer object and attach it to our media player.
mVisualizer = new Visualizer(player.getAudioSessionId());
mVisualizer.setCaptureSize(Visualizer.getCaptureSizeRange()[1]);
// Pass through Visualizer data to VisualizerView
Visualizer.OnDataCaptureListener captureListener =
new Visualizer.OnDataCaptureListener() {
@Override
public void onWaveFormDataCapture(
Visualizer visualizer, byte[] bytes, int samplingRate) {
updateVisualizer(bytes);
}
@Override
public void onFftDataCapture(Visualizer visualizer, byte[] bytes, int samplingRate) {
updateVisualizerFFT(bytes);
}
};
mVisualizer.setDataCaptureListener(
captureListener, Visualizer.getMaxCaptureRate() / 2, true, true);
// Enabled Visualizer and disable when we're done with the stream
mVisualizer.setEnabled(true);
player.setOnCompletionListener(
new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mediaPlayer) {
mVisualizer.setEnabled(false);
}
});
}
public void onDetach() {
mVisualizer.setEnabled(false);
mPlayer.stop();
}
public void onPause() {
mVisualizer.setEnabled(false);
mPlayer.pause();
}