internal override void LoadMusic(SoundMusic music)
{
if (audioPlayer != null)
{
throw new AudioSystemInternalException("Tried to create a new AudioPlayer but the current instance was not freed.");
}
CurrentMusic = music;
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));
}
}
private void ProcessMusicEnded()
{
if (currentMusic == null || currentMusic.IsDisposed) //this event is asynchronous so the music can be disposed by the user meanwhile.
{
return;
}
// If the music need to be looped, we start it again.
if (currentMusic.IsLooped && !currentMusic.ShouldExitLoop && currentMusic.PlayState != SoundPlayState.Stopped)
{
RestartCurrentMusic(); // restart the sound to simulate looping.
StartCurrentMusic();
}
// otherwise we set the state of currentMusic to "stopped"
else
{
currentMusic.SetStateToStopped();
}
}
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;
}
}
}
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));
}
}