private void LoadNewMusic(SoundMusic soundMusic)
{
loadTime.Restart();
try
{
using (var javaFileStream = new FileInputStream(soundMusic.FileName))
mediaPlayer.SetDataSource(javaFileStream.FD, soundMusic.StartPosition, soundMusic.Length);
mediaPlayer.PrepareAsync();
currentMusic = soundMusic;
}
catch (IOException)
{
// this can happen namely if too many files are already opened (should not throw an exception)
Logger.Warning("The audio file '{0}' could not be opened", soundMusic.FileName);
}
catch (SecurityException)
{
throw new InvalidOperationException("The sound file is not accessible anymore.");
}
catch (IllegalArgumentException e)
{
throw new AudioSystemInternalException("Error during the SetDataSouce: "+e);
}
}
private void LoadNewMusic(SoundMusic lastPlayRequestMusicInstance)
{
if(audioPlayer != null)
throw new AudioSystemInternalException("Tried to create a new AudioPlayer but the current instance was not freed.");
currentMusic = lastPlayRequestMusicInstance;
currentMusicDataTypeIsUnsupported = false;
NSError loadError;
// TODO: Avoid allocating twice the music size (i.e. by using NSData.FromBytesNoCopy on currentMusic.Stream.GetBuffer())
currentMusic.Stream.Position = 0;
audioPlayer = AVAudioPlayer.FromData(NSData.FromStream(currentMusic.Stream), out loadError);
if (loadError != null)
{
if (loadError.Code == (int) AudioFileError.UnsupportedFileType || loadError.Code == (int) AudioFileError.UnsupportedDataFormat)
{
currentMusicDataTypeIsUnsupported = true;
musicMediaEvents.Enqueue(new SoundMusicEventNotification(SoundMusicEvent.MetaDataLoaded, null));
return;
}
throw new AudioSystemInternalException("Music loading failed and failure was not handled. [Error="+loadError.LocalizedDescription+"].");
}
if (audioPlayer == null) // both audioPlayer and loadError are null (happened before when url was not correct)
throw new AudioSystemInternalException("Music loading failed and failure was not handled. [Unspecified Error].");
audioPlayer.DecoderError += OnAudioPlayerDecoderError;
audioPlayer.FinishedPlaying += OnAudioPlayerFinishedPlaying;
if (!audioPlayer.PrepareToPlay())
{
// this happens sometimes when we put the application on background when starting to play.
var currentMusicName = currentMusic.Name;
currentMusic.SetStateToStopped();
ResetMusicPlayer();
Logger.Warning("The music '{0}' failed to prepare to play.", currentMusicName);
}
else
{
musicMediaEvents.Enqueue(new SoundMusicEventNotification(SoundMusicEvent.MetaDataLoaded, null));
musicMediaEvents.Enqueue(new SoundMusicEventNotification(SoundMusicEvent.ReadyToBePlayed, null));
}
}
/// <summary>
/// Create and Load a sound music from an input file.
/// </summary>
/// <param name="engine">The audio engine in which to load the soundMusic</param>
/// <param name="stream">The stream.</param>
/// <returns>A new instance of soundMusic ready to be played</returns>
/// <exception cref="System.ArgumentNullException">engine
/// or
/// filename</exception>
/// <exception cref="System.ObjectDisposedException">The AudioEngine in which to create the voice is disposed.</exception>
/// <exception cref="System.ArgumentException">engine or stream</exception>
/// <exception cref="ObjectDisposedException">The AudioEngine in which to create the voice is disposed.</exception>
/// <exception cref="ArgumentNullException">File ' + filename + ' does not exist.</exception>
/// <remarks>On all platform the wav format is supported.
/// For compressed formats, it is the task of the build engine to automatically adapt the original files to the best hardware specific format.</remarks>
public static SoundMusic Load(AudioEngine engine, Stream stream)
{
if(engine == null)
throw new ArgumentNullException("engine");
if (stream == null)
throw new ArgumentNullException("stream");
if(engine.IsDisposed)
throw new ObjectDisposedException("The AudioEngine in which to create the voice is disposed.");
// TODO: Not portable on WindowsStore
var ret = new SoundMusic(engine);
ret.Load(stream);
return ret;
}
/// <summary>
/// Load a new music into the media session. That is create a new session and a new topology and set the topology of the session.
/// </summary>
/// <param name="music"></param>
private void LoadNewMusic(SoundMusic music)
{
if (currentMusic != null || mediaSession != null)
throw new AudioSystemInternalException("State of the audio engine invalid at the entry of LoadNewMusic.");
music.Stream.Position = 0;
mediaInputByteStream = new ByteStream(music.Stream);
topology = CreateTopology(mediaInputByteStream, out mediaSource);
MediaFactory.CreateMediaSession(null, out mediaSession);
mediaSessionCallback = new MediaSessionCallback(mediaSession, OnMediaSessionEvent);
mediaSession.SetTopology(SessionSetTopologyFlags.None, topology);
currentMusic = music;
}
internal override void PlayImpl()
{
AudioEngine.SubmitMusicActionRequest(new SoundMusicActionRequest(this, SoundMusicAction.Play));
// Actual Playing is happening during the Audio Engine update
// but we can not wait this long to update the PlayState of the currently playing SoundMusic
// after this call to Play, PlayState of the previous playing music should directly be set to Stopped
// this is why we use here the static field PreviousPlayingInstance
lock (PreviousPlayingInstanceLock) // protection again possible future multithreading.
{
if (previousPlayingInstance != this)
{
if (previousPlayingInstance != null)
previousPlayingInstance.SetStateToStopped();
previousPlayingInstance = this;
}
}
}
public SoundMusicActionRequest(SoundMusic requester, SoundMusicAction request)
{
Requester = requester;
RequestedAction = request;
}
private void QueueLastPendingRequests(Dictionary<SoundMusicAction, bool> requestAftPlay, SoundMusic requester)
{
lock (musicActionRequests)
{
foreach (var action in requestAftPlay.Where(x => x.Value).Select(x => x.Key))
musicActionRequests.Enqueue(new SoundMusicActionRequest(requester, action));
}
}
private void LoadNewMusic(SoundMusic lastPlayRequestMusicInstance)
{
currentMusic = lastPlayRequestMusicInstance;
mediaEngineEx.SetSourceFromByteStream(new ByteStream(currentMusic.Stream), "MP3");
}
private void LoadNewMusic(SoundMusic lastPlayRequestMusicInstance)
{
currentMusic = lastPlayRequestMusicInstance;
mediaEngineEx.SetSourceFromByteStream(new ByteStream(currentMusic.Stream), "MP3");
}
private void QueueLastPendingRequests(Dictionary <SoundMusicAction, bool> requestAftPlay, SoundMusic requester)
{
lock (musicActionRequests)
{
foreach (var action in requestAftPlay.Where(x => x.Value).Select(x => x.Key))
{
musicActionRequests.Enqueue(new SoundMusicActionRequest(requester, action));
}
}
}
public SoundMusicActionRequest(SoundMusic requester, SoundMusicAction request)
{
Requester = requester;
RequestedAction = request;
}