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Add Icy metadata support on Android (#78)

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* Add Icy "info" metadata to Android playback events

* Add IcyMetadata stream to the Flutter module

* Update ExoPlayer to 2.11.4

* Use Player.EventListener.onTracksChanged to retrieve IcyHeaders

* Iterate over each track of trackGroups to look for IcyHeaders
This commit is contained in:
Andrea Jonus 2020-04-21 22:57:32 +10:00 • committed by GitHub
parent ea4be9f9ad
commit 0f57b69ead
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3 changed files with 143 additions and 15 deletions
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75
android/src/main/java/com/ryanheise/just_audio/AudioPlayer.java
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@ -7,11 +7,18 @@ import com.google.android.exoplayer2.ExoPlaybackException;
import com.google.android.exoplayer2.Player;
import com.google.android.exoplayer2.PlaybackParameters;
import com.google.android.exoplayer2.SimpleExoPlayer;
import com.google.android.exoplayer2.metadata.Metadata;
import com.google.android.exoplayer2.metadata.MetadataOutput;
import com.google.android.exoplayer2.metadata.icy.IcyHeaders;
import com.google.android.exoplayer2.metadata.icy.IcyInfo;
import com.google.android.exoplayer2.source.ClippingMediaSource;
import com.google.android.exoplayer2.source.MediaSource;
import com.google.android.exoplayer2.source.ProgressiveMediaSource;
import com.google.android.exoplayer2.source.TrackGroup;
import com.google.android.exoplayer2.source.TrackGroupArray;
import com.google.android.exoplayer2.source.dash.DashMediaSource;
import com.google.android.exoplayer2.source.hls.HlsMediaSource;
import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
import com.google.android.exoplayer2.upstream.DataSource;
import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
import com.google.android.exoplayer2.upstream.DefaultHttpDataSourceFactory;
@ -28,17 +35,14 @@ import io.flutter.plugin.common.MethodChannel.Result;
import io.flutter.plugin.common.PluginRegistry.Registrar;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.Collections;
import android.content.Context;
import android.net.Uri;
import java.util.List;
public class AudioPlayer implements MethodCallHandler, Player.EventListener {
public class AudioPlayer implements MethodCallHandler, Player.EventListener, MetadataOutput {
static final String TAG = "AudioPlayer";
private final Registrar registrar;
@ -64,6 +68,8 @@ public class AudioPlayer implements MethodCallHandler, Player.EventListener {
private boolean buffering;
private boolean justConnected;
private MediaSource mediaSource;
private IcyInfo icyInfo;
private IcyHeaders icyHeaders;
private final SimpleExoPlayer player;
private final Handler handler = new Handler();
@ -109,6 +115,7 @@ public class AudioPlayer implements MethodCallHandler, Player.EventListener {
state = PlaybackState.none;
player = new SimpleExoPlayer.Builder(context).build();
player.addMetadataOutput(this);
player.addListener(this);
}
@ -117,6 +124,38 @@ public class AudioPlayer implements MethodCallHandler, Player.EventListener {
handler.post(bufferWatcher);
}
@Override
public void onMetadata(Metadata metadata) {
for (int i = 0; i < metadata.length(); i++) {
final Metadata.Entry entry = metadata.get(i);
if (entry instanceof IcyInfo) {
icyInfo = (IcyInfo) entry;
broadcastPlaybackEvent();
}
}
}
@Override
public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
for (int i = 0; i < trackGroups.length; i++) {
TrackGroup trackGroup = trackGroups.get(i);
for (int j = 0; j < trackGroup.length; j++) {
Metadata metadata = trackGroup.getFormat(j).metadata;
if (metadata != null) {
for (int k = 0; k < metadata.length(); k++) {
final Metadata.Entry entry = metadata.get(k);
if (entry instanceof IcyHeaders) {
icyHeaders = (IcyHeaders) entry;
broadcastPlaybackEvent();
}
}
}
}
}
}
@Override
public void onPlayerStateChanged(boolean playWhenReady, int playbackState) {
switch (playbackState) {
@ -261,6 +300,32 @@ public class AudioPlayer implements MethodCallHandler, Player.EventListener {
event.add(updatePosition = getCurrentPosition());
event.add(updateTime = System.currentTimeMillis());
event.add(Math.max(updatePosition, bufferedPosition));
final ArrayList<Object> icyData = new ArrayList<>();
final ArrayList<String> info;
final ArrayList<Object> headers;
if (icyInfo != null) {
info = new ArrayList<>();
info.add(icyInfo.title);
info.add(icyInfo.url);
} else {
info = new ArrayList<>(Collections.nCopies(2, null));
}
if (icyHeaders != null) {
headers = new ArrayList<>();
headers.add(icyHeaders.bitrate);
headers.add(icyHeaders.genre);
headers.add(icyHeaders.name);
headers.add(icyHeaders.metadataInterval);
headers.add(icyHeaders.url);
headers.add(icyHeaders.isPublic);
} else {
headers = new ArrayList<>(Collections.nCopies(6, null));
}
icyData.add(info);
icyData.add(headers);
event.add(icyData);
if (eventSink != null) {
eventSink.success(event);
}