void UpdateMetadata()
{
if (!QueueHelper.isIndexPlayable(currentIndexOnQueue, playingQueue))
{
LogHelper.Error(Tag, "Can't retrieve current metadata.");
UpdatePlaybackState(Resources.GetString(Resource.String.error_no_metadata));
return;
}
var queueItem = playingQueue [currentIndexOnQueue];
var musicId = MediaIDHelper.ExtractMusicIDFromMediaID(
queueItem.Description.MediaId);
var track = musicProvider.GetMusic(musicId);
var trackId = track.GetString(MediaMetadata.MetadataKeyMediaId);
if (musicId != trackId)
{
var e = new InvalidOperationException("track ID should match musicId.");
LogHelper.Error(Tag, "track ID should match musicId.",
" musicId=", musicId, " trackId=", trackId,
" mediaId from queueItem=", queueItem.Description.MediaId,
" title from queueItem=", queueItem.Description.Title,
" mediaId from track=", track.Description.MediaId,
" title from track=", track.Description.Title,
" source.hashcode from track=", track.GetString(
MusicProvider.CustomMetadataTrackSource).GetHashCode(),
e);
throw e;
}
LogHelper.Debug(Tag, "Updating metadata for MusicID= " + musicId);
session.SetMetadata(track);
// Set the proper album artwork on the media session, so it can be shown in the
// locked screen and in other places.
if (track.Description.IconBitmap == null &&
track.Description.IconUri != null)
{
var albumUri = track.Description.IconUri.ToString();
AlbumArtCache.Instance.Fetch(albumUri, new AlbumArtCache.FetchListener {
OnFetched = (artUrl, bitmap, icon) => {
var qItem = playingQueue [currentIndexOnQueue];
var trackItem = musicProvider.GetMusic(trackId);
trackItem = new MediaMetadata.Builder(trackItem)
.PutBitmap(MediaMetadata.MetadataKeyAlbumArt, bitmap)
.PutBitmap(MediaMetadata.MetadataKeyDisplayIcon, icon)
.Build();
musicProvider.UpdateMusic(trackId, trackItem);
// If we are still playing the same music
var currentPlayingId = MediaIDHelper.ExtractMusicIDFromMediaID(
qItem.Description.MediaId);
if (trackId == currentPlayingId)
{
session.SetMetadata(trackItem);
}
}
});
}
}
public void Play(MediaSession.QueueItem item)
{
playOnFocusGain = true;
TryToGetAudioFocus();
RegisterAudioNoisyReceiver();
string mediaId = item.Description.MediaId;
bool mediaHasChanged = mediaId != currentMediaId;
if (mediaHasChanged)
{
currentPosition = 0;
currentMediaId = mediaId;
}
if (State == PlaybackStateCode.Paused && !mediaHasChanged && mediaPlayer != null)
{
ConfigMediaPlayerState();
}
else
{
State = PlaybackStateCode.Stopped;
RelaxResources(false);
MediaMetadata track = musicProvider.GetMusic(
MediaIDHelper.ExtractMusicIDFromMediaID(item.Description.MediaId));
string source = track.GetString(MusicProvider.CustomMetadataTrackSource);
try {
CreateMediaPlayerIfNeeded();
State = PlaybackStateCode.Buffering;
mediaPlayer.SetAudioStreamType(Android.Media.Stream.Music);
mediaPlayer.SetDataSource(source);
mediaPlayer.PrepareAsync();
wifiLock.Acquire();
if (Callback != null)
{
Callback.OnPlaybackStatusChanged(State);
}
} catch (IOException ex) {
LogHelper.Error(Tag, ex, "Exception playing song");
if (Callback != null)
{
Callback.OnError(ex.Message);
}
}
}
}
MediaMetadata GetCurrentPlayingMusic()
{
if (QueueHelper.isIndexPlayable(currentIndexOnQueue, playingQueue))
{
var item = playingQueue [currentIndexOnQueue];
if (item != null)
{
LogHelper.Debug(Tag, "getCurrentPlayingMusic for musicId=",
item.Description.MediaId);
return(musicProvider.GetMusic(
MediaIDHelper.ExtractMusicIDFromMediaID(item.Description.MediaId)));
}
}
return(null);
}