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MediaPlayer: added getSelectedTrack

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Change-Id: Ic39b9b3d5e72e13452320a0272deb489a0285913
This commit is contained in:
Robert Shih
2014-05-29 10:54:32 -07:00
parent f76ba856f3
commit 464da703ca
2 changed files with 47 additions and 1 deletions
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2
api/current.txt
View File

@@ -14668,6 +14668,7 @@ package android.media {
method public int getAudioSessionId();
method public int getCurrentPosition();
method public int getDuration();
method public int getSelectedTrack(int) throws java.lang.IllegalStateException;
method public android.media.MediaPlayer.TrackInfo[] getTrackInfo() throws java.lang.IllegalStateException;
method public int getVideoHeight();
method public int getVideoWidth();
@@ -14767,6 +14768,7 @@ package android.media {
method public int getTrackType();
method public void writeToParcel(android.os.Parcel, int);
field public static final int MEDIA_TRACK_TYPE_AUDIO = 2; // 0x2
field public static final int MEDIA_TRACK_TYPE_SUBTITLE = 4; // 0x4
field public static final int MEDIA_TRACK_TYPE_TIMEDTEXT = 3; // 0x3
field public static final int MEDIA_TRACK_TYPE_UNKNOWN = 0; // 0x0
field public static final int MEDIA_TRACK_TYPE_VIDEO = 1; // 0x1

46
media/java/android/media/MediaPlayer.java
View File

@@ -631,6 +631,7 @@ public class MediaPlayer implements SubtitleController.Listener
private static final int INVOKE_ID_SELECT_TRACK = 4;
private static final int INVOKE_ID_DESELECT_TRACK = 5;
private static final int INVOKE_ID_SET_VIDEO_SCALE_MODE = 6;
private static final int INVOKE_ID_GET_SELECTED_TRACK = 7;
/**
* Create a request parcel which can be routed to the native media
@@ -1634,7 +1635,6 @@ public class MediaPlayer implements SubtitleController.Listener
public static final int MEDIA_TRACK_TYPE_VIDEO = 1;
public static final int MEDIA_TRACK_TYPE_AUDIO = 2;
public static final int MEDIA_TRACK_TYPE_TIMEDTEXT = 3;
/** @hide */
public static final int MEDIA_TRACK_TYPE_SUBTITLE = 4;
final int mTrackType;
@@ -2059,6 +2059,7 @@ public class MediaPlayer implements SubtitleController.Listener
throws IllegalArgumentException, IllegalStateException {
if (!availableMimeTypeForExternalSource(mimeType)) {
throw new IllegalArgumentException("Illegal mimeType for timed text source: " + mimeType);
}
Parcel request = Parcel.obtain();
@@ -2077,6 +2078,49 @@ public class MediaPlayer implements SubtitleController.Listener
}
}
/**
* Returns the index of the audio, video, or subtitle track currently selected for playback,
* The return value is an index into the array returned by {@link #getTrackInfo()}, and can
* be used in calls to {@link #selectTrack(int)} or {@link #deselectTrack(int)}.
*
* @param trackType should be one of {@link TrackInfo#MEDIA_TRACK_TYPE_VIDEO},
* {@link TrackInfo#MEDIA_TRACK_TYPE_AUDIO}, or
* {@link TrackInfo#MEDIA_TRACK_TYPE_SUBTITLE}
* @return index of the audio, video, or subtitle track currently selected for playback;
* a negative integer is returned when there is no selected track for {@code trackType} or
* when {@code trackType} is not one of audio, video, or subtitle.
* @throws IllegalStateException if called after {@link #release()}
*
* @see {@link #getTrackInfo()}
* @see {@link #selectTrack(int)}
* @see {@link #deselectTrack(int)}
*/
public int getSelectedTrack(int trackType) throws IllegalStateException {
if (trackType == TrackInfo.MEDIA_TRACK_TYPE_SUBTITLE && mSubtitleController != null) {
SubtitleTrack subtitleTrack = mSubtitleController.getSelectedTrack();
if (subtitleTrack != null) {
int index = mOutOfBandSubtitleTracks.indexOf(subtitleTrack);
if (index >= 0) {
return mInbandSubtitleTracks.length + index;
}
}
}
Parcel request = Parcel.obtain();
Parcel reply = Parcel.obtain();
try {
request.writeInterfaceToken(IMEDIA_PLAYER);
request.writeInt(INVOKE_ID_GET_SELECTED_TRACK);
request.writeInt(trackType);
invoke(request, reply);
int selectedTrack = reply.readInt();
return selectedTrack;
} finally {
request.recycle();
reply.recycle();
}
}
/**
* Selects a track.
* <p>