/// <summary>
/// Plays the playlist from the current item index.
/// </summary>
public void Play(double initialPosition, bool startPaused)
{
try
{
if (_isPlaying)
{
if (_currentLoop != null)
{
//Tracing.Log("Player.Play -- Stopping current loop...");
StopLoop();
}
//Tracing.Log("Player.Play -- Stopping playback...");
Stop();
}
RemoveSyncCallbacks();
_currentLoop = null;
_positionOffset = 0;
_currentMixPlaylistIndex = Playlist.CurrentItemIndex;
// How many channels are left?
int channelsToLoad = Playlist.Items.Count - Playlist.CurrentItemIndex;
// If there are more than 2, just limit to 2 for now. The other channels are loaded dynamically.
if (channelsToLoad > 2)
channelsToLoad = 2;
// Check for channels to load
if (channelsToLoad == 0)
throw new Exception("Error in Player.Play: There aren't any channels to play!");
// Load the current channel and the next channel if it exists
for (int a = Playlist.CurrentItemIndex; a < Playlist.CurrentItemIndex + channelsToLoad; a++)
_playlist.Items[a].Load(_useFloatingPoint);
// Start decoding first playlist item
//_decodingService.StartDecodingFile(_playlist.Items[0].AudioFile.FilePath, _positionOffset);
try
{
// Create the streaming channel (set the frequency to the first file in the list)
//Tracing.Log("Player.Play -- Creating streaming channel (SampleRate: " + _playlist.CurrentItem.AudioFile.SampleRate + " Hz, FloatingPoint: true)...");
#if IOS
_streamProc = new STREAMPROC(StreamCallbackIOS);
#else
_streamProc = new STREAMPROC(StreamCallback);
#endif
_streamChannel = Channel.CreateStream(_playlist.CurrentItem.AudioFile.SampleRate, 2, _useFloatingPoint, _streamProc);
//Tracing.Log("Player.Play -- Creating time shifting channel...");
_fxChannel = Channel.CreateStreamForTimeShifting(_streamChannel.Handle, true, _useFloatingPoint);
//_fxChannel = Channel.CreateStreamForTimeShifting(_streamChannel.Handle, false, _useFloatingPoint);
//_fxChannel = _streamChannel;
}
catch(Exception ex)
{
// Raise custom exception with information (so the client application can maybe deactivate floating point for example)
PlayerCreateStreamException newEx = new PlayerCreateStreamException("The player has failed to create the stream channel (" + ex.Message + ").", ex);
newEx.Decode = true;
newEx.UseFloatingPoint = true;
newEx.SampleRate = _playlist.CurrentItem.AudioFile.SampleRate;
throw newEx;
}
// Check driver type
if (_device.DriverType == DriverType.DirectSound)
{
try
{
// Create mixer stream
Tracing.Log("Player.Play -- Creating mixer channel (DirectSound)...");
_mixerChannel = MixerChannel.CreateMixerStream(_playlist.CurrentItem.AudioFile.SampleRate, 2, _useFloatingPoint, false);
_mixerChannel.AddChannel(_fxChannel.Handle);
//_mixerChannel = _fxChannel;
AddBPMCallbacks();
}
catch (Exception ex)
{
// Raise custom exception with information (so the client application can maybe deactivate floating point for example)
PlayerCreateStreamException newEx = new PlayerCreateStreamException("The player has failed to create the time shifting channel.", ex);
newEx.UseFloatingPoint = true;
newEx.UseTimeShifting = true;
newEx.SampleRate = _playlist.CurrentItem.AudioFile.SampleRate;
throw newEx;
}
}
#if !IOS && !ANDROID
else if (_device.DriverType == DriverType.ASIO)
{
try
{
// Create mixer stream
Tracing.Log("Player.Play -- Creating mixer channel (ASIO)...");
_mixerChannel = MixerChannel.CreateMixerStream(_playlist.CurrentItem.AudioFile.SampleRate, 2, _useFloatingPoint, true);
_mixerChannel.AddChannel(_fxChannel.Handle);
}
catch (Exception ex)
{
// Raise custom exception with information (so the client application can maybe deactivate floating point for example)
PlayerCreateStreamException newEx = new PlayerCreateStreamException("The player has failed to create the time shifting channel.", ex);
newEx.DriverType = DriverType.ASIO;
newEx.UseFloatingPoint = true;
newEx.UseTimeShifting = true;
newEx.Decode = true;
newEx.SampleRate = _playlist.CurrentItem.AudioFile.SampleRate;
throw newEx;
}
// Set floating point
BassAsio.BASS_ASIO_ChannelSetFormat(false, 0, BASSASIOFormat.BASS_ASIO_FORMAT_FLOAT);
// Create callback
asioProc = new ASIOPROC(AsioCallback);
try
{
// Enable and join channels (for stereo output
Tracing.Log("Player.Play -- Enabling ASIO channels...");
BassAsio.BASS_ASIO_ChannelEnable(false, 0, asioProc, new IntPtr(_mixerChannel.Handle));
Tracing.Log("Player.Play -- Joining ASIO channels...");
BassAsio.BASS_ASIO_ChannelJoin(false, 1, 0);
// Set sample rate
Tracing.Log("Player.Play -- Set ASIO sample rates...");
BassAsio.BASS_ASIO_ChannelSetRate(false, 0, _playlist.CurrentItem.AudioFile.SampleRate);
BassAsio.BASS_ASIO_SetRate(_playlist.CurrentItem.AudioFile.SampleRate);
}
catch (Exception ex)
{
// Raise custom exception with information (so the client application can maybe deactivate floating point for example)
PlayerCreateStreamException newEx = new PlayerCreateStreamException("The player has failed to enable or join ASIO channels.", ex);
newEx.DriverType = DriverType.ASIO;
newEx.SampleRate = _playlist.CurrentItem.AudioFile.SampleRate;
throw newEx;
}
// Start playback
Tracing.Log("Player.Play -- Starting ASIO buffering...");
if (!BassAsio.BASS_ASIO_Start(0))
{
// Get BASS error
BASSError error = Bass.BASS_ErrorGetCode();
// Raise custom exception with information (so the client application can maybe deactivate floating point for example)
PlayerCreateStreamException newEx = new PlayerCreateStreamException("The player has failed to create the ASIO channel (" + error.ToString() + ").", null);
newEx.DriverType = DriverType.ASIO;
newEx.UseFloatingPoint = true;
newEx.UseTimeShifting = true;
newEx.Decode = true;
newEx.SampleRate = _playlist.CurrentItem.AudioFile.SampleRate;
throw newEx;
}
}
else if (_device.DriverType == DriverType.WASAPI)
{
// Create mixer stream
Tracing.Log("Player.Play -- Creating mixer channel (WASAPI)...");
_mixerChannel = MixerChannel.CreateMixerStream(_playlist.CurrentItem.AudioFile.SampleRate, 2, true, true);
_mixerChannel.AddChannel(_fxChannel.Handle);
// Start playback
if (!BassWasapi.BASS_WASAPI_Start())
{
// Get error
BASSError error = Bass.BASS_ErrorGetCode();
throw new Exception("Player.Play error: Error playing files in WASAPI: " + error.ToString());
}
}
#endif
// Set initial volume
_mixerChannel.Volume = Volume;
// Load 18-band equalizer
//Tracing.Log("Player.Play -- Creating equalizer (Preset: " + _currentEQPreset + ")...");
AddEQ(_currentEQPreset);
// Check if EQ is bypassed
if (_isEQBypassed)
{
// Reset EQ
//Tracing.Log("Player.Play -- Equalizer is bypassed; resetting EQ...");
ResetEQ();
}
// Check if the song must be looped
if (_repeatType == RepeatType.Song)
_playlist.CurrentItem.Channel.SetFlags(BASSFlag.BASS_SAMPLE_LOOP, BASSFlag.BASS_SAMPLE_LOOP);
long length = _playlist.CurrentItem.Channel.GetLength();
SetSyncCallback(length);
_isPlaying = true;
// Only the DirectSound mode needs to start the main channel since it's not in decode mode.
if (_device.DriverType == DriverType.DirectSound)
{
// For iOS: This is required to update the AirPlay/remote player status
Base.Start();
// Start playback
//Tracing.Log("Player.Play -- Starting DirectSound playback...");
_mixerChannel.Play(false);
if (startPaused)
{
if(initialPosition > 0)
SetPosition(initialPosition);
Base.Pause();
}
_isPaused = startPaused;
}
// StartEncode(EncoderType.OGG);
// StartCast(new CastServerParams()
// {
// Bitrate = 128,
// Name = "Sessions Test Server",
// Url = "localhost:8000",
// Password = "******"
// });
// Raise audio file finished event (if an event is subscribed)
if (OnPlaylistIndexChanged != null)
{
PlayerPlaylistIndexChangedData data = new PlayerPlaylistIndexChangedData();
data.IsPlaybackStopped = false;
data.AudioFileStarted = _playlist.CurrentItem.AudioFile;
data.PlaylistName = "New playlist 1";
data.PlaylistCount = _playlist.Items.Count;
data.PlaylistIndex = _playlist.CurrentItemIndex;
if (Playlist.CurrentItemIndex < Playlist.Items.Count - 2)
data.NextAudioFile = Playlist.Items[Playlist.CurrentItemIndex + 1].AudioFile;
OnPlaylistIndexChanged(data);
}
}
catch (Exception ex)
{
Tracing.Log("Player.Play error: " + ex.Message + "\n" + ex.StackTrace);
throw;
}
}
/// <summary>
/// Sync callback routine used for triggering the playlist index changed event and
/// changing the output stream sample rate if necessary.
/// </summary>
/// <param name="handle">Handle to the sync</param>
/// <param name="channel">Channel handle</param>
/// <param name="data">Data</param>
/// <param name="user">User data</param>
internal void PlayerSyncProc(int handle, int channel, int data, IntPtr user)
{
bool playbackStopped = false;
bool playlistBackToStart = false;
int nextPlaylistIndex = 0;
_mixerChannel.Lock(true);
long position = _mixerChannel.GetPosition();
// if (_useFloatingPoint)
// position /= 2;
// Get remanining data in buffer
//int buffered = mainChannel.GetData(IntPtr.Zero, (int)BASSData.BASS_DATA_AVAILABLE);
// Check if this the last song
if (_playlist.CurrentItemIndex == _playlist.Items.Count - 1)
{
// This is the end of the playlist. Check the repeat type if the playlist needs to be repeated
if (RepeatType == RepeatType.Playlist)
{
// Set flags
nextPlaylistIndex = 0;
playlistBackToStart = true;
}
else
{
// Set flags
playbackStopped = true;
}
}
else
{
// Set flags
nextPlaylistIndex = _playlist.CurrentItemIndex + 1;
}
// Calculate position offset
long offset = 0 - (position / 2);
if (!playbackStopped)
{
// Multiply by 1.5 (I don't really know why, but this works for 48000Hz and 96000Hz. Maybe a bug in BASS with FLAC files?)
if (Playlist.CurrentItem.AudioFile.FileType == AudioFileFormat.FLAC && Playlist.Items[nextPlaylistIndex].AudioFile.SampleRate > 44100)
offset = (long)((float)offset * 1.5f);
// Check if the sample rate needs to be changed (i.e. main channel sample rate different than the decoding file)
if (!playbackStopped && _mixerChannel.SampleRate != Playlist.Items[nextPlaylistIndex].AudioFile.SampleRate)
_mixerChannel.SetSampleRate(Playlist.Items[nextPlaylistIndex].AudioFile.SampleRate);
// Set position offset
_positionOffset = offset;
}
_mixerChannel.Lock(false);
RemoveSyncCallback(handle);
// Check if this is the last item to play
if (_playlist.CurrentItemIndex == _playlist.Items.Count - 1)
{
// This is the end of the playlist. Check the repeat type if the playlist needs to be repeated
if (RepeatType == RepeatType.Playlist)
Playlist.First();
}
else
{
// Increment playlist index
Playlist.Next();
}
// Check if an event is subscribed
if (OnPlaylistIndexChanged != null)
{
// Create data
PlayerPlaylistIndexChangedData eventData = new PlayerPlaylistIndexChangedData();
eventData.IsPlaybackStopped = playbackStopped;
eventData.PlaylistName = "New playlist 1";
eventData.PlaylistCount = _playlist.Items.Count;
eventData.PlaylistIndex = _playlist.CurrentItemIndex;
// If the playback hasn't stopped, fill more event data
if (playbackStopped)
{
// Set event data
eventData.AudioFileStarted = null;
eventData.AudioFileEnded = Playlist.CurrentItem.AudioFile;
// Check if EQ is enabled
if (_isEQEnabled)
RemoveEQ();
// Dispose channels
_playlist.DisposeChannels();
_isPlaying = false;
}
else
{
// Set event data
eventData.AudioFileStarted = Playlist.CurrentItem.AudioFile;
if (Playlist.CurrentItemIndex < Playlist.Items.Count - 2)
eventData.NextAudioFile = Playlist.Items[Playlist.CurrentItemIndex + 1].AudioFile;
// Is this the first item, and did the last song of the playlist just play?
if (Playlist.CurrentItemIndex == 0 && playlistBackToStart)
{
// The audio file that just finished was the last of the playlist
eventData.AudioFileEnded = Playlist.Items[Playlist.Items.Count - 1].AudioFile;
}
// Make sure this is not the first item
else if (Playlist.CurrentItemIndex > 0)
{
// The audio file that just finished was the last one
eventData.AudioFileEnded = Playlist.Items[Playlist.CurrentItemIndex - 1].AudioFile;
}
}
// Raise event
OnPlaylistIndexChanged(eventData);
}
}
