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SimpleExoPlayerData.java
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SimpleExoPlayerData.java
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package expo.modules.av.player;
import android.content.Context;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import androidx.annotation.Nullable;
import android.text.TextUtils;
import android.util.Pair;
import android.view.Surface;
import com.google.android.exoplayer2.C;
import com.google.android.exoplayer2.ExoPlaybackException;
import com.google.android.exoplayer2.ExoPlayerFactory;
import com.google.android.exoplayer2.Format;
import com.google.android.exoplayer2.PlaybackParameters;
import com.google.android.exoplayer2.Player;
import com.google.android.exoplayer2.SimpleExoPlayer;
import com.google.android.exoplayer2.Timeline;
import com.google.android.exoplayer2.extractor.DefaultExtractorsFactory;
import com.google.android.exoplayer2.source.AdaptiveMediaSourceEventListener;
import com.google.android.exoplayer2.source.ExtractorMediaSource;
import com.google.android.exoplayer2.source.MediaSource;
import com.google.android.exoplayer2.source.TrackGroupArray;
import com.google.android.exoplayer2.source.dash.DashMediaSource;
import com.google.android.exoplayer2.source.dash.DefaultDashChunkSource;
import com.google.android.exoplayer2.source.hls.HlsMediaSource;
import com.google.android.exoplayer2.source.smoothstreaming.DefaultSsChunkSource;
import com.google.android.exoplayer2.source.smoothstreaming.SsMediaSource;
import com.google.android.exoplayer2.trackselection.AdaptiveTrackSelection;
import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
import com.google.android.exoplayer2.trackselection.TrackSelection;
import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
import com.google.android.exoplayer2.trackselection.TrackSelector;
import com.google.android.exoplayer2.upstream.BandwidthMeter;
import com.google.android.exoplayer2.upstream.DataSource;
import com.google.android.exoplayer2.upstream.DataSpec;
import com.google.android.exoplayer2.upstream.DefaultBandwidthMeter;
import com.google.android.exoplayer2.util.Util;
import java.io.IOException;
import java.util.Map;
import expo.modules.av.AVManagerInterface;
import expo.modules.av.AudioFocusNotAcquiredException;
import expo.modules.av.player.datasource.DataSourceFactoryProvider;
class SimpleExoPlayerData extends PlayerData
implements Player.EventListener, ExtractorMediaSource.EventListener, SimpleExoPlayer.VideoListener, AdaptiveMediaSourceEventListener {
private static final String IMPLEMENTATION_NAME = "SimpleExoPlayer";
private SimpleExoPlayer mSimpleExoPlayer = null;
private String mOverridingExtension;
private LoadCompletionListener mLoadCompletionListener = null;
private boolean mFirstFrameRendered = false;
private Pair<Integer, Integer> mVideoWidthHeight = null;
private Integer mLastPlaybackState = null;
private boolean mIsLooping = false;
private boolean mIsLoading = true;
private Context mReactContext;
SimpleExoPlayerData(final AVManagerInterface avModule, final Context context, final Uri uri, final String overridingExtension, final Map<String, Object> requestHeaders) {
super(avModule, uri, requestHeaders);
mReactContext = context;
mOverridingExtension = overridingExtension;
}
@Override
String getImplementationName() {
return IMPLEMENTATION_NAME;
}
// --------- PlayerData implementation ---------
// Lifecycle
@Override
public void load(final Bundle status, final LoadCompletionListener loadCompletionListener) {
mLoadCompletionListener = loadCompletionListener;
// Create a default TrackSelector
final Handler mainHandler = new Handler();
// Measures bandwidth during playback. Can be null if not required.
final BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
final TrackSelection.Factory trackSelectionFactory = new AdaptiveTrackSelection.Factory(bandwidthMeter);
final TrackSelector trackSelector = new DefaultTrackSelector(trackSelectionFactory);
// Create the player
mSimpleExoPlayer = ExoPlayerFactory.newSimpleInstance(mAVModule.getContext(), trackSelector);
mSimpleExoPlayer.addListener(this);
mSimpleExoPlayer.addVideoListener(this);
// Produces DataSource instances through which media data is loaded.
final DataSource.Factory dataSourceFactory = mAVModule.getModuleRegistry().getModule(DataSourceFactoryProvider.class).createFactory(mReactContext, mAVModule.getModuleRegistry(), Util.getUserAgent(mAVModule.getContext(), "yourApplicationName"), mRequestHeaders, bandwidthMeter.getTransferListener());
try {
// This is the MediaSource representing the media to be played.
final MediaSource source = buildMediaSource(mUri, mOverridingExtension, mainHandler, dataSourceFactory);
// Prepare the player with the source.
mSimpleExoPlayer.prepare(source);
setStatus(status, null);
} catch (IllegalStateException e) {
onFatalError(e);
}
}
@Override
public synchronized void release() {
if (mSimpleExoPlayer != null) {
mSimpleExoPlayer.release();
mSimpleExoPlayer = null;
}
}
@Override
boolean shouldContinueUpdatingProgress() {
return mSimpleExoPlayer != null && mSimpleExoPlayer.getPlayWhenReady();
}
// Set status
@Override
void playPlayerWithRateAndMuteIfNecessary() throws AudioFocusNotAcquiredException {
if (mSimpleExoPlayer == null || !shouldPlayerPlay()) {
return;
}
if (!mIsMuted) {
mAVModule.acquireAudioFocus();
}
updateVolumeMuteAndDuck();
mSimpleExoPlayer.setPlaybackParameters(new PlaybackParameters(mRate, mShouldCorrectPitch ? 1.0f : mRate));
mSimpleExoPlayer.setPlayWhenReady(mShouldPlay);
beginUpdatingProgressIfNecessary();
}
@Override
void applyNewStatus(final Integer newPositionMillis, final Boolean newIsLooping)
throws AudioFocusNotAcquiredException, IllegalStateException {
if (mSimpleExoPlayer == null) {
throw new IllegalStateException("mSimpleExoPlayer is null!");
}
// Set looping idempotently
if (newIsLooping != null) {
mIsLooping = newIsLooping;
if (mIsLooping) {
mSimpleExoPlayer.setRepeatMode(Player.REPEAT_MODE_ALL);
} else {
mSimpleExoPlayer.setRepeatMode(Player.REPEAT_MODE_OFF);
}
}
// Pause first if necessary.
if (!shouldPlayerPlay()) {
mSimpleExoPlayer.setPlayWhenReady(false);
stopUpdatingProgressIfNecessary();
}
// Mute / update volume if it doesn't require a request of the audio focus.
updateVolumeMuteAndDuck();
// Seek
if (newPositionMillis != null) {
// TODO handle different timeline cases for streaming
mSimpleExoPlayer.seekTo(newPositionMillis);
}
// Play / unmute
playPlayerWithRateAndMuteIfNecessary();
}
// Get status
@Override
boolean isLoaded() {
return mSimpleExoPlayer != null;
}
@Override
void getExtraStatusFields(final Bundle map) {
// TODO handle different timeline cases for streaming
final int duration = (int) mSimpleExoPlayer.getDuration();
map.putInt(STATUS_DURATION_MILLIS_KEY_PATH, duration);
map.putInt(STATUS_POSITION_MILLIS_KEY_PATH,
getClippedIntegerForValue((int) mSimpleExoPlayer.getCurrentPosition(), 0, duration));
map.putInt(STATUS_PLAYABLE_DURATION_MILLIS_KEY_PATH,
getClippedIntegerForValue((int) mSimpleExoPlayer.getBufferedPosition(), 0, duration));
map.putBoolean(STATUS_IS_PLAYING_KEY_PATH,
mSimpleExoPlayer.getPlayWhenReady() && mSimpleExoPlayer.getPlaybackState() == Player.STATE_READY);
map.putBoolean(STATUS_IS_BUFFERING_KEY_PATH,
mIsLoading || mSimpleExoPlayer.getPlaybackState() == Player.STATE_BUFFERING);
map.putBoolean(STATUS_IS_LOOPING_KEY_PATH, mIsLooping);
}
// Video specific stuff
@Override
public Pair<Integer, Integer> getVideoWidthHeight() {
return mVideoWidthHeight != null ? mVideoWidthHeight : new Pair<>(0, 0);
}
@Override
public void tryUpdateVideoSurface(final Surface surface) {
if (mSimpleExoPlayer != null) {
mSimpleExoPlayer.setVideoSurface(surface);
}
}
@Override
public int getAudioSessionId() {
return mSimpleExoPlayer != null ? mSimpleExoPlayer.getAudioSessionId() : 0;
}
// --------- Interface implementation ---------
// AudioEventHandler
@Override
public void pauseImmediately() {
if (mSimpleExoPlayer != null) {
mSimpleExoPlayer.setPlayWhenReady(false);
}
stopUpdatingProgressIfNecessary();
}
@Override
public boolean requiresAudioFocus() {
return mSimpleExoPlayer != null && (mSimpleExoPlayer.getPlayWhenReady() || shouldPlayerPlay()) && !mIsMuted;
}
@Override
public void updateVolumeMuteAndDuck() {
if (mSimpleExoPlayer != null) {
mSimpleExoPlayer.setVolume(mAVModule.getVolumeForDuckAndFocus(mIsMuted, mVolume));
}
}
// ExoPlayer.EventListener
@Override
public void onLoadingChanged(final boolean isLoading) {
mIsLoading = isLoading;
callStatusUpdateListener();
}
@Override
public void onPlaybackParametersChanged(PlaybackParameters parameters) {
}
@Override
public void onSeekProcessed() {
}
@Override
public void onRepeatModeChanged(int repeatMode) {
}
@Override
public void onShuffleModeEnabledChanged(boolean shuffleModeEnabled) {
}
@Override
public void onTracksChanged(TrackGroupArray trackGroups,
TrackSelectionArray trackSelections) {
}
@Override
public void onPlayerStateChanged(final boolean playWhenReady, final int playbackState) {
if (playbackState == Player.STATE_READY && mLoadCompletionListener != null) {
final LoadCompletionListener listener = mLoadCompletionListener;
mLoadCompletionListener = null;
listener.onLoadSuccess(getStatus());
}
if (mLastPlaybackState != null
&& playbackState != mLastPlaybackState
&& playbackState == Player.STATE_ENDED) {
callStatusUpdateListenerWithDidJustFinish();
} else {
callStatusUpdateListener();
}
mLastPlaybackState = playbackState;
}
@Override
public void onPlayerError(final ExoPlaybackException error) {
onFatalError(error.getCause());
}
@Override
public void onPositionDiscontinuity(int reason) {
// According to the documentation:
// > A period defines a single logical piece of media, for example a media file.
// > It may also define groups of ads inserted into the media,
// > along with information about whether those ads have been loaded and played.
// Source: https://google.github.io/ExoPlayer/doc/reference/com/google/android/exoplayer2/Timeline.Period.html
// So I guess it's safe to say that when a period transition happens,
// media file transition happens, so we just finished playing one.
if (reason == Player.DISCONTINUITY_REASON_PERIOD_TRANSITION) {
callStatusUpdateListenerWithDidJustFinish();
}
}
// ExtractorMediaSource.EventListener
@Override
public void onLoadError(final IOException error) {
if (mLoadCompletionListener != null) {
final LoadCompletionListener listener = mLoadCompletionListener;
mLoadCompletionListener = null;
listener.onLoadError(error.toString());
}
}
private void onFatalError(final Throwable error) {
if (mLoadCompletionListener != null) {
final LoadCompletionListener listener = mLoadCompletionListener;
mLoadCompletionListener = null;
listener.onLoadError(error.toString());
} else {
mErrorListener.onError("Player error: " + error.getMessage());
}
release();
}
// SimpleExoPlayer.VideoListener
@Override
public void onVideoSizeChanged(final int width, final int height, final int unAppliedRotationDegrees, final float pixelWidthHeightRatio) {
// TODO other params?
mVideoWidthHeight = new Pair<>(width, height);
if (mFirstFrameRendered && mVideoSizeUpdateListener != null) {
mVideoSizeUpdateListener.onVideoSizeUpdate(mVideoWidthHeight);
}
}
@Override
public void onRenderedFirstFrame() {
if (!mFirstFrameRendered && mVideoWidthHeight != null && mVideoSizeUpdateListener != null) {
mVideoSizeUpdateListener.onVideoSizeUpdate(mVideoWidthHeight);
}
mFirstFrameRendered = true;
}
// https://github.com/google/ExoPlayer/blob/2b20780482a9c6b07416bcbf4de829532859d10a/demos/main/src/main/java/com/google/android/exoplayer2/demo/PlayerActivity.java#L365-L393
private MediaSource buildMediaSource(Uri uri, String overrideExtension, Handler mainHandler, DataSource.Factory factory) {
@C.ContentType int type = TextUtils.isEmpty(overrideExtension) ? Util.inferContentType(String.valueOf(uri)) : Util.inferContentType("." + overrideExtension);
switch (type) {
case C.TYPE_SS:
return new SsMediaSource(uri, factory,
new DefaultSsChunkSource.Factory(factory), mainHandler, this);
case C.TYPE_DASH:
return new DashMediaSource(uri, factory,
new DefaultDashChunkSource.Factory(factory), mainHandler, this);
case C.TYPE_HLS:
return new HlsMediaSource(uri, factory, mainHandler, this);
case C.TYPE_OTHER:
return new ExtractorMediaSource(uri, factory, new DefaultExtractorsFactory(), mainHandler, this);
default: {
throw new IllegalStateException("Content of this type is unsupported at the moment. Unsupported type: " + type);
}
}
}
// AdaptiveMediaSourceEventListener
@Override
public void onMediaPeriodCreated(int windowIndex, MediaSource.MediaPeriodId mediaPeriodId) {
}
@Override
public void onMediaPeriodReleased(int windowIndex, MediaSource.MediaPeriodId mediaPeriodId) {
}
@Override
public void onLoadStarted(int windowIndex, @Nullable MediaSource.MediaPeriodId mediaPeriodId, LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) {
}
@Override
public void onLoadCompleted(int windowIndex, @Nullable MediaSource.MediaPeriodId mediaPeriodId, LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) {
}
@Override
public void onLoadCanceled(int windowIndex, @Nullable MediaSource.MediaPeriodId mediaPeriodId, LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) {
}
@Override
public void onLoadError(int windowIndex, @Nullable MediaSource.MediaPeriodId mediaPeriodId, LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData, IOException error, boolean wasCanceled) {
}
@Override
public void onReadingStarted(int windowIndex, MediaSource.MediaPeriodId mediaPeriodId) {
}
@Override
public void onUpstreamDiscarded(int windowIndex, MediaSource.MediaPeriodId mediaPeriodId, MediaLoadData mediaLoadData) {
}
@Override
public void onDownstreamFormatChanged(int windowIndex, @Nullable MediaSource.MediaPeriodId mediaPeriodId, MediaLoadData mediaLoadData) {
}
}