session-android/src/org/thoughtcrime/securesms/audio/AudioSlidePlayer.java

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package org.thoughtcrime.securesms.audio;
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.media.AudioManager;
import android.net.Uri;
import android.os.Build;
import android.os.Handler;
import android.os.Message;
import android.os.PowerManager;
import android.os.PowerManager.WakeLock;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.util.Pair;
import android.widget.Toast;
import com.google.android.exoplayer2.C;
import com.google.android.exoplayer2.DefaultLoadControl;
import com.google.android.exoplayer2.DefaultRenderersFactory;
import com.google.android.exoplayer2.ExoPlaybackException;
import com.google.android.exoplayer2.ExoPlayerFactory;
import com.google.android.exoplayer2.LoadControl;
import com.google.android.exoplayer2.Player;
import com.google.android.exoplayer2.SimpleExoPlayer;
import com.google.android.exoplayer2.audio.AudioAttributes;
import com.google.android.exoplayer2.extractor.DefaultExtractorsFactory;
import com.google.android.exoplayer2.source.ExtractorMediaSource;
import com.google.android.exoplayer2.source.MediaSource;
import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
import org.thoughtcrime.securesms.attachments.AttachmentServer;
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import org.thoughtcrime.securesms.logging.Log;
import org.thoughtcrime.securesms.mms.AudioSlide;
import org.thoughtcrime.securesms.util.ServiceUtil;
import org.thoughtcrime.securesms.util.Util;
import org.whispersystems.libsignal.util.guava.Optional;
import java.io.IOException;
import java.lang.ref.WeakReference;
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import network.loki.messenger.BuildConfig;
import network.loki.messenger.R;
public class AudioSlidePlayer implements SensorEventListener {
private static final String TAG = AudioSlidePlayer.class.getSimpleName();
private static @NonNull Optional<AudioSlidePlayer> playing = Optional.absent();
private final @NonNull Context context;
private final @NonNull AudioSlide slide;
private final @NonNull Handler progressEventHandler;
private final @NonNull AudioManager audioManager;
private final @NonNull SensorManager sensorManager;
private final @NonNull Sensor proximitySensor;
private final @Nullable WakeLock wakeLock;
private @NonNull WeakReference<Listener> listener;
private @Nullable SimpleExoPlayer mediaPlayer;
private @Nullable AttachmentServer audioAttachmentServer;
private long startTime;
public synchronized static AudioSlidePlayer createFor(@NonNull Context context,
@NonNull AudioSlide slide,
@NonNull Listener listener)
{
if (playing.isPresent() && playing.get().getAudioSlide().equals(slide)) {
playing.get().setListener(listener);
return playing.get();
} else {
return new AudioSlidePlayer(context, slide, listener);
}
}
private AudioSlidePlayer(@NonNull Context context,
@NonNull AudioSlide slide,
@NonNull Listener listener)
{
this.context = context;
this.slide = slide;
this.listener = new WeakReference<>(listener);
this.progressEventHandler = new ProgressEventHandler(this);
this.audioManager = (AudioManager)context.getSystemService(Context.AUDIO_SERVICE);
this.sensorManager = (SensorManager)context.getSystemService(Context.SENSOR_SERVICE);
this.proximitySensor = sensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY);
if (Build.VERSION.SDK_INT >= 21) {
this.wakeLock = ServiceUtil.getPowerManager(context).newWakeLock(PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK, TAG);
} else {
this.wakeLock = null;
}
}
public void play(final double progress) throws IOException {
play(progress, false);
}
private void play(final double progress, boolean earpiece) throws IOException {
if (this.mediaPlayer != null) return;
LoadControl loadControl = new DefaultLoadControl.Builder().setBufferDurationsMs(Integer.MAX_VALUE, Integer.MAX_VALUE, Integer.MAX_VALUE, Integer.MAX_VALUE).createDefaultLoadControl();
this.mediaPlayer = ExoPlayerFactory.newSimpleInstance(context, new DefaultRenderersFactory(context), new DefaultTrackSelector(), loadControl);
this.audioAttachmentServer = new AttachmentServer(context, slide.asAttachment());
this.startTime = System.currentTimeMillis();
audioAttachmentServer.start();
mediaPlayer.prepare(createMediaSource(audioAttachmentServer.getUri()));
mediaPlayer.setPlayWhenReady(true);
mediaPlayer.setAudioAttributes(new AudioAttributes.Builder()
.setContentType(earpiece ? C.CONTENT_TYPE_SPEECH : C.CONTENT_TYPE_MUSIC)
.setUsage(earpiece ? C.USAGE_VOICE_COMMUNICATION : C.USAGE_MEDIA)
.build());
mediaPlayer.addListener(new Player.EventListener() {
boolean started = false;
@Override
public void onPlayerStateChanged(boolean playWhenReady, int playbackState) {
Log.d(TAG, "onPlayerStateChanged(" + playWhenReady + ", " + playbackState + ")");
switch (playbackState) {
case Player.STATE_READY:
Log.i(TAG, "onPrepared() " + mediaPlayer.getBufferedPercentage() + "% buffered");
synchronized (AudioSlidePlayer.this) {
if (mediaPlayer == null) return;
if (started) {
Log.d(TAG, "Already started. Ignoring.");
return;
}
started = true;
if (progress > 0) {
mediaPlayer.seekTo((long) (mediaPlayer.getDuration() * progress));
}
sensorManager.registerListener(AudioSlidePlayer.this, proximitySensor, SensorManager.SENSOR_DELAY_NORMAL);
setPlaying(AudioSlidePlayer.this);
}
notifyOnStart();
progressEventHandler.sendEmptyMessage(0);
break;
case Player.STATE_ENDED:
Log.i(TAG, "onComplete");
synchronized (AudioSlidePlayer.this) {
mediaPlayer = null;
if (audioAttachmentServer != null) {
audioAttachmentServer.stop();
audioAttachmentServer = null;
}
sensorManager.unregisterListener(AudioSlidePlayer.this);
if (wakeLock != null && wakeLock.isHeld()) {
if (Build.VERSION.SDK_INT >= 21) {
wakeLock.release(PowerManager.RELEASE_FLAG_WAIT_FOR_NO_PROXIMITY);
}
}
}
notifyOnStop();
progressEventHandler.removeMessages(0);
}
}
@Override
public void onPlayerError(ExoPlaybackException error) {
Log.w(TAG, "MediaPlayer Error: " + error);
Toast.makeText(context, R.string.AudioSlidePlayer_error_playing_audio, Toast.LENGTH_SHORT).show();
synchronized (AudioSlidePlayer.this) {
mediaPlayer = null;
if (audioAttachmentServer != null) {
audioAttachmentServer.stop();
audioAttachmentServer = null;
}
sensorManager.unregisterListener(AudioSlidePlayer.this);
if (wakeLock != null && wakeLock.isHeld()) {
if (Build.VERSION.SDK_INT >= 21) {
wakeLock.release(PowerManager.RELEASE_FLAG_WAIT_FOR_NO_PROXIMITY);
}
}
}
notifyOnStop();
progressEventHandler.removeMessages(0);
}
});
}
private MediaSource createMediaSource(@NonNull Uri uri) {
return new ExtractorMediaSource.Factory(new DefaultDataSourceFactory(context, BuildConfig.USER_AGENT))
.setExtractorsFactory(new DefaultExtractorsFactory().setConstantBitrateSeekingEnabled(true))
.createMediaSource(uri);
}
public synchronized void stop() {
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Log.i(TAG, "Stop called!");
removePlaying(this);
if (this.mediaPlayer != null) {
this.mediaPlayer.stop();
this.mediaPlayer.release();
}
if (this.audioAttachmentServer != null) {
this.audioAttachmentServer.stop();
}
sensorManager.unregisterListener(AudioSlidePlayer.this);
this.mediaPlayer = null;
this.audioAttachmentServer = null;
}
public synchronized static void stopAll() {
if (playing.isPresent()) {
playing.get().stop();
}
}
public void setListener(@NonNull Listener listener) {
this.listener = new WeakReference<>(listener);
if (this.mediaPlayer != null && this.mediaPlayer.getPlaybackState() == Player.STATE_READY) {
notifyOnStart();
}
}
public @NonNull AudioSlide getAudioSlide() {
return slide;
}
private Pair<Double, Integer> getProgress() {
if (mediaPlayer == null || mediaPlayer.getCurrentPosition() <= 0 || mediaPlayer.getDuration() <= 0) {
return new Pair<>(0D, 0);
} else {
return new Pair<>((double) mediaPlayer.getCurrentPosition() / (double) mediaPlayer.getDuration(),
(int) mediaPlayer.getCurrentPosition());
}
}
private void notifyOnStart() {
Util.runOnMain(new Runnable() {
@Override
public void run() {
getListener().onStart();
}
});
}
private void notifyOnStop() {
Util.runOnMain(new Runnable() {
@Override
public void run() {
getListener().onStop();
}
});
}
private void notifyOnProgress(final double progress, final long millis) {
Util.runOnMain(new Runnable() {
@Override
public void run() {
getListener().onProgress(progress, millis);
}
});
}
private @NonNull Listener getListener() {
Listener listener = this.listener.get();
if (listener != null) return listener;
else return new Listener() {
@Override
public void onStart() {}
@Override
public void onStop() {}
@Override
public void onProgress(double progress, long millis) {}
};
}
private synchronized static void setPlaying(@NonNull AudioSlidePlayer player) {
if (playing.isPresent() && playing.get() != player) {
playing.get().notifyOnStop();
playing.get().stop();
}
playing = Optional.of(player);
}
private synchronized static void removePlaying(@NonNull AudioSlidePlayer player) {
if (playing.isPresent() && playing.get() == player) {
playing = Optional.absent();
}
}
@Override
public void onSensorChanged(SensorEvent event) {
if (event.sensor.getType() != Sensor.TYPE_PROXIMITY) return;
if (mediaPlayer == null || mediaPlayer.getPlaybackState() != Player.STATE_READY) return;
int streamType;
if (event.values[0] < 5f && event.values[0] != proximitySensor.getMaximumRange()) {
streamType = AudioManager.STREAM_VOICE_CALL;
} else {
streamType = AudioManager.STREAM_MUSIC;
}
if (streamType == AudioManager.STREAM_VOICE_CALL &&
mediaPlayer.getAudioStreamType() != streamType &&
!audioManager.isWiredHeadsetOn())
{
double position = mediaPlayer.getCurrentPosition();
double duration = mediaPlayer.getDuration();
double progress = position / duration;
if (wakeLock != null) wakeLock.acquire();
stop();
try {
play(progress, true);
} catch (IOException e) {
Log.w(TAG, e);
}
} else if (streamType == AudioManager.STREAM_MUSIC &&
mediaPlayer.getAudioStreamType() != streamType &&
System.currentTimeMillis() - startTime > 500)
{
if (wakeLock != null) wakeLock.release();
stop();
notifyOnStop();
}
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
public interface Listener {
void onStart();
void onStop();
void onProgress(double progress, long millis);
}
private static class ProgressEventHandler extends Handler {
private final WeakReference<AudioSlidePlayer> playerReference;
private ProgressEventHandler(@NonNull AudioSlidePlayer player) {
this.playerReference = new WeakReference<>(player);
}
@Override
public void handleMessage(Message msg) {
AudioSlidePlayer player = playerReference.get();
if (player == null || player.mediaPlayer == null || !isPlayerActive(player.mediaPlayer)) {
return;
}
Pair<Double, Integer> progress = player.getProgress();
player.notifyOnProgress(progress.first, progress.second);
sendEmptyMessageDelayed(0, 50);
}
private boolean isPlayerActive(@NonNull SimpleExoPlayer player) {
return player.getPlaybackState() == Player.STATE_READY || player.getPlaybackState() == Player.STATE_BUFFERING;
}
}
}