/// <summary>
/// Attach a stream to the Mixer
/// </summary>
/// <param name="stream"></param>
/// <returns></returns>
public bool AttachStream(MusicStream stream)
{
Bass.BASS_ChannelLock(_mixer, true);
// Set SynyPos at end of stream
SetSyncPos(stream, 0.0);
bool result = BassMix.BASS_Mixer_StreamAddChannel(_mixer, stream.BassStream,
BASSFlag.BASS_MIXER_NORAMPIN | BASSFlag.BASS_MIXER_BUFFER |
BASSFlag.BASS_MIXER_MATRIX | BASSFlag.BASS_MIXER_DOWNMIX |
BASSFlag.BASS_STREAM_AUTOFREE);
if (!result)
{
Log.Error("BASS: Error attaching stream to mixer. {0}", Bass.BASS_ErrorGetCode());
}
Bass.BASS_ChannelLock(_mixer, false);
if (result && _mixingMatrix != null)
{
Log.Debug("BASS: Setting mixing matrix...");
result = BassMix.BASS_Mixer_ChannelSetMatrix(stream.BassStream, _mixingMatrix);
if (!result)
{
Log.Error("BASS: Error attaching Mixing Matrix. {0}", Bass.BASS_ErrorGetCode());
}
}
return(result);
}
/// <summary>
/// Sets a SyncPos on the mixer stream
/// </summary>
/// <param name="stream"></param>
/// <param name="timePos"></param>
public void SetSyncPos(MusicStream stream, double timePos)
{
double fadeOutSeconds = Config.CrossFadeIntervalMs / 1000.0;
double totalStreamLen = Bass.BASS_ChannelBytes2Seconds(stream.BassStream, Bass.BASS_ChannelGetLength(stream.BassStream, BASSMode.BASS_POS_BYTES));
long mixerPos = Bass.BASS_ChannelGetPosition(_mixer, BASSMode.BASS_POS_BYTES | BASSMode.BASS_POS_DECODE);
long syncPos = mixerPos + Bass.BASS_ChannelSeconds2Bytes(_mixer, totalStreamLen - timePos - fadeOutSeconds);
if (_syncProc != 0)
{
Bass.BASS_ChannelRemoveSync(_mixer, _syncProc);
}
// We might have stored the pinned object already, because we are skipping
// Only store object it, when it doesn't exist
if (!_pinnedObjects.ContainsKey(stream.BassStream))
{
Log.Debug("BASS: Updating Dictionary for GCHandle for stream {0}", stream.BassStream);
// Add the pinned object to the global dictionary, so that we can free it later in the Sync End Proc
_pinnedObjects.Add(stream.BassStream, GCHandle.Alloc(stream));
}
_syncProc = Bass.BASS_ChannelSetSync(_mixer,
BASSSync.BASS_SYNC_ONETIME | BASSSync.BASS_SYNC_POS | BASSSync.BASS_SYNC_MIXTIME,
syncPos, _playbackEndProcDelegate,
new IntPtr(stream.BassStream));
}
/// <summary>
/// Sets a SyncPos on the mixer stream
/// </summary>
/// <param name="stream"></param>
/// <param name="timePos"></param>
public void SetSyncPos(MusicStream stream, double timePos)
{
double fadeOutSeconds = Config.CrossFadeIntervalMs / 1000.0;
double totalStreamLen = Bass.BASS_ChannelBytes2Seconds(stream.BassStream, Bass.BASS_ChannelGetLength(stream.BassStream, BASSMode.BASS_POS_BYTES));
long mixerPos = Bass.BASS_ChannelGetPosition(_mixer, BASSMode.BASS_POS_BYTES | BASSMode.BASS_POS_DECODE);
long syncPos = mixerPos + Bass.BASS_ChannelSeconds2Bytes(_mixer, totalStreamLen - timePos - fadeOutSeconds);
if (_syncProc != 0)
{
Bass.BASS_ChannelRemoveSync(_mixer, _syncProc);
}
GCHandle pFilePath = GCHandle.Alloc(stream);
_syncProc = Bass.BASS_ChannelSetSync(_mixer,
BASSSync.BASS_SYNC_ONETIME | BASSSync.BASS_SYNC_POS | BASSSync.BASS_SYNC_MIXTIME,
syncPos, _playbackEndProcDelegate,
GCHandle.ToIntPtr(pFilePath));
}
/// <summary>
/// Called to start playback of next files internally, without makinbg use of g_player.
/// This gives us the capability to achieve gapless playback.
/// </summary>
/// <param name="filePath"></param>
private bool PlayInternal(string filePath)
{
if (filePath == string.Empty)
{
return false;
}
// Cue support
if (HandleCueFile(ref filePath, true))
{
return true;
}
_filePath = filePath;
MusicStream stream = new MusicStream(filePath);
if (stream.BassStream == 0)
{
return false;
}
_streams.Add(stream);
if (stream.Filetype.FileMainType == FileMainType.CDTrack)
{
_isCDDAFile = true;
}
else
{
_isCDDAFile = false;
}
if (_mixer == null)
{
_mixer = new MixerStream(this);
_mixer.MusicStreamMessage += OnMusicStreamMessage;
if (!_mixer.CreateMixer(stream))
{
Log.Error("BASS: Could not create Mixer. Aborting playback.");
return false;
}
}
else
{
if (NewMixerNeeded(stream))
{
Log.Debug("BASS: New stream has different number of channels or sample rate. Need a new mixer.");
// Free Mixer
_mixer.Dispose();
_mixer = null;
_mixer = new MixerStream(this);
_mixer.MusicStreamMessage += OnMusicStreamMessage;
if (!_mixer.CreateMixer(stream))
{
Log.Error("BASS: Could not create Mixer. Aborting playback.");
return false;
}
}
}
// Enable events, for various Playback Actions to be handled
stream.MusicStreamMessage += new MusicStream.MusicStreamMessageHandler(OnMusicStreamMessage);
SetCueTrackEndPosition(stream, false);
// Plug in the stream into the Mixer
if (!_mixer.AttachStream(stream))
{
return false;
}
return true;
}
/// <summary>
/// Sets the End Position for the CUE Track
/// </summary>
/// <param name="stream"></param>
private void SetCueTrackEndPosition(MusicStream stream, bool endOnly)
{
if (_currentCueSheet != null)
{
stream.SetCueTrackEndPos(_cueTrackStartPos, _cueTrackEndPos, endOnly);
}
}
/// <summary>
/// Create a mixer using the stream attributes
/// </summary>
/// <param name="stream"></param>
/// <returns></returns>
public bool CreateMixer(MusicStream stream)
{
Log.Debug("BASS: ---------------------------------------------");
Log.Debug("BASS: Creating BASS mixer stream");
bool result = false;
BASSFlag mixerFlags = BASSFlag.BASS_MIXER_NONSTOP | BASSFlag.BASS_SAMPLE_FLOAT | BASSFlag.BASS_MIXER_NORAMPIN;
if (Config.MusicPlayer == AudioPlayer.Asio || Config.MusicPlayer == AudioPlayer.WasApi)
{
mixerFlags |= BASSFlag.BASS_STREAM_DECODE;
}
int outputChannels = _bassPlayer.DeviceChannels;
_mixingMatrix = null;
// See, if we need Upmixing
if (outputChannels > stream.ChannelInfo.chans)
{
Log.Debug("BASS: Found more output channels ({0}) than input channels ({1}). Check for upmixing.", outputChannels,
stream.ChannelInfo.chans);
_mixingMatrix = CreateMixingMatrix(stream.ChannelInfo.chans);
if (_mixingMatrix != null)
{
outputChannels = Math.Min(_mixingMatrix.GetLength(0), outputChannels);
_upmixing = true;
}
else
{
outputChannels = stream.ChannelInfo.chans;
}
}
else if (outputChannels < stream.ChannelInfo.chans)
{
// Downmix to Stereo
Log.Debug("BASS: Found more input channels ({0}) than output channels ({1}). Downmix.", stream.ChannelInfo.chans,
outputChannels);
outputChannels = Math.Min(outputChannels, 2);
}
Log.Debug("BASS: Creating {0} channel mixer with sample rate of {1}", outputChannels, stream.ChannelInfo.freq);
_mixer = BassMix.BASS_Mixer_StreamCreate(stream.ChannelInfo.freq, outputChannels, mixerFlags);
if (_mixer == 0)
{
Log.Error("BASS: Unable to create Mixer. Reason: {0}.",
Enum.GetName(typeof(BASSError), Bass.BASS_ErrorGetCode()));
return(false);
}
switch (Config.MusicPlayer)
{
case AudioPlayer.Bass:
case AudioPlayer.DShow:
if (!Bass.BASS_ChannelPlay(_mixer, false))
{
Log.Error("BASS: Unable to start Mixer. Reason: {0}.", Enum.GetName(typeof(BASSError), Bass.BASS_ErrorGetCode()));
return(false);
}
result = true;
break;
case AudioPlayer.Asio:
Log.Info("BASS: Initialising ASIO device");
if (BassAsio.BASS_ASIO_IsStarted() && !BassAsio.BASS_ASIO_Stop())
{
Log.Error("BASS: Error stopping Asio Device: {0}", BassAsio.BASS_ASIO_ErrorGetCode());
}
// Disable and Unjoin all the channels
if (!BassAsio.BASS_ASIO_ChannelReset(false, -1, BASSASIOReset.BASS_ASIO_RESET_ENABLE))
{
Log.Error("BASS: Error disabling Asio Channels: {0}", BassAsio.BASS_ASIO_ErrorGetCode());
}
if (!BassAsio.BASS_ASIO_ChannelReset(false, -1, BASSASIOReset.BASS_ASIO_RESET_JOIN))
{
Log.Error("BASS: Error unjoining Asio Channels: {0}", BassAsio.BASS_ASIO_ErrorGetCode());
}
_asioProc = new ASIOPROC(AsioCallback);
BassAsio.BASS_ASIO_ChannelSetVolume(false, -1, (float)Config.StreamVolume / 100f);
// enable 1st output channel...(0=first)
Log.Debug("BASS: Joining Asio Channel #{0}", "0");
BassAsio.BASS_ASIO_ChannelEnable(false, 0, _asioProc, new IntPtr(_mixer));
// and join the next channels to it
int numChannels = Math.Max(stream.ChannelInfo.chans, outputChannels);
for (int i = 1; i < numChannels; i++)
{
Log.Debug("BASS: Joining Asio Channel #{0}", i);
BassAsio.BASS_ASIO_ChannelJoin(false, i, 0);
}
// since we joined the channels, the next commands will apply to all channles joined
// so setting the values to the first channels changes them all automatically
// set the source format (float, as the decoding channel is)
if (!BassAsio.BASS_ASIO_ChannelSetFormat(false, 0, BASSASIOFormat.BASS_ASIO_FORMAT_FLOAT))
{
Log.Error("BASS: Error setting Asio Sample Format: {0}", BassAsio.BASS_ASIO_ErrorGetCode());
}
// set the source rate
Log.Debug("BASS: Set sample rate to {0}", stream.ChannelInfo.freq);
if (!BassAsio.BASS_ASIO_ChannelSetRate(false, 0, (double)stream.ChannelInfo.freq))
{
Log.Error("BASS: Error setting Asio Channel Samplerate: {0}", BassAsio.BASS_ASIO_ErrorGetCode());
}
// try to set the device rate too (saves resampling)
if (!BassAsio.BASS_ASIO_SetRate((double)stream.ChannelInfo.freq))
{
Log.Error("BASS: Error setting Asio Samplerate: {0}", BassAsio.BASS_ASIO_ErrorGetCode());
}
// and start playing it...start output using default buffer/latency
if (!BassAsio.BASS_ASIO_Start(0))
{
Log.Error("BASS: Error starting Asio playback: {0}", BassAsio.BASS_ASIO_ErrorGetCode());
}
Log.Info("BASS: Finished initialising ASIO device");
result = true;
break;
case AudioPlayer.WasApi:
Log.Info("BASS: Initialising WASAPI device");
try
{
BassWasapi.BASS_WASAPI_Free();
Log.Debug("BASS: Freed WASAPI device");
}
catch (Exception ex)
{
Log.Error("BASS: Exception freeing WASAPI. {0} {1}", ex.Message, ex.StackTrace);
}
BASSWASAPIInit initFlags = BASSWASAPIInit.BASS_WASAPI_AUTOFORMAT;
_wasapiProc = new WASAPIPROC(WasApiCallback);
bool wasApiExclusiveSupported = true;
// Check if we have an uneven number of channels
var chkChannels = outputChannels % 2;
if (chkChannels == 1)
{
Log.Warn("BASS: Found uneven number of channels {0}. increase output channels.", outputChannels);
outputChannels++; // increase the number of output channels
wasApiExclusiveSupported = false; // And indicate that we need a new mixer
}
// Handle the special cases of 3.0, 4.0 and 5.0 files being played on a 5.1 or 6.1 device
if (outputChannels == 3) // a 3.0 file
{
Log.Info("BASS: Found a 3 channel file. Set upmixing with LFE, LR, RR set to silent");
_mixingMatrix = CreateThreeDotZeroUpMixMatrix();
outputChannels = _bassPlayer.DeviceChannels; // WASAPI device should be initialised with all channels active
wasApiExclusiveSupported = false; // And indicate that we need a new mixer
}
else if (outputChannels == 4) // a 4.0 file
{
Log.Info("BASS: Found a 4 channel file. Set upmixing with Center and LFE set to silent");
_mixingMatrix = CreateFourDotZeroUpMixMatrix();
outputChannels = _bassPlayer.DeviceChannels; // WASAPI device should be initialised with all channels active
wasApiExclusiveSupported = false; // And indicate that we need a new mixer
}
else if (outputChannels == 5) // a 5.0 file
{
Log.Info("BASS: Found a 5 channel file. Set upmixing with LFE set to silent");
_mixingMatrix = CreateFiveDotZeroUpMixMatrix();
outputChannels = _bassPlayer.DeviceChannels; // WASAPI device should be initialised with all channels active
wasApiExclusiveSupported = false; // And indicate that we need a new mixer
}
// If Exclusive mode is used, check, if that would be supported, otherwise init in shared mode
if (Config.WasApiExclusiveMode)
{
initFlags |= BASSWASAPIInit.BASS_WASAPI_EXCLUSIVE;
_wasapiShared = false;
_wasapiMixedChans = 0;
_wasapiMixedFreq = 0;
BASSWASAPIFormat wasapiFormat = BassWasapi.BASS_WASAPI_CheckFormat(_bassPlayer.DeviceNumber,
stream.ChannelInfo.freq,
outputChannels,
BASSWASAPIInit.BASS_WASAPI_EXCLUSIVE);
if (wasapiFormat == BASSWASAPIFormat.BASS_WASAPI_FORMAT_UNKNOWN)
{
Log.Warn("BASS: WASAPI exclusive mode not directly supported. Let BASS WASAPI choose better mode.");
wasApiExclusiveSupported = false;
}
}
else
{
Log.Debug("BASS: Init WASAPI shared mode with Event driven system enabled.");
initFlags |= BASSWASAPIInit.BASS_WASAPI_SHARED | BASSWASAPIInit.BASS_WASAPI_EVENT;
// In case of WASAPI Shared mode we need to setup the mixer to use the same sample rate as set in
// the Windows Mixer, otherwise we wioll have increased playback speed
BASS_WASAPI_DEVICEINFO devInfo = BassWasapi.BASS_WASAPI_GetDeviceInfo(_bassPlayer.DeviceNumber);
Log.Debug("BASS: Creating {0} channel mixer for frequency {1}", devInfo.mixchans, devInfo.mixfreq);
_mixer = BassMix.BASS_Mixer_StreamCreate(devInfo.mixfreq, devInfo.mixchans, mixerFlags);
if (_mixer == 0)
{
Log.Error("BASS: Unable to create Mixer. Reason: {0}.",
Enum.GetName(typeof(BASSError), Bass.BASS_ErrorGetCode()));
return(false);
}
_wasapiShared = true;
}
Log.Debug("BASS: Try to init WASAPI with a Frequency of {0} and {1} channels", stream.ChannelInfo.freq, outputChannels);
if (BassWasapi.BASS_WASAPI_Init(_bassPlayer.DeviceNumber, stream.ChannelInfo.freq, outputChannels,
initFlags | BASSWASAPIInit.BASS_WASAPI_BUFFER, Convert.ToSingle(Config.BufferingMs / 1000.0), 0f, _wasapiProc, IntPtr.Zero))
{
BASS_WASAPI_INFO wasapiInfo = BassWasapi.BASS_WASAPI_GetInfo();
Log.Debug("BASS: ---------------------------------------------");
Log.Debug("BASS: Buffer Length: {0}", wasapiInfo.buflen);
Log.Debug("BASS: Channels: {0}", wasapiInfo.chans);
Log.Debug("BASS: Frequency: {0}", wasapiInfo.freq);
Log.Debug("BASS: Format: {0}", wasapiInfo.format.ToString());
Log.Debug("BASS: InitFlags: {0}", wasapiInfo.initflags.ToString());
Log.Debug("BASS: Exclusive: {0}", wasapiInfo.IsExclusive.ToString());
Log.Debug("BASS: ---------------------------------------------");
Log.Info("BASS: WASAPI Device successfully initialised");
// Now we need to check, if WASAPI decided to switch to a different mode
if (Config.WasApiExclusiveMode && !wasApiExclusiveSupported)
{
// Recreate Mixer with new value
Log.Debug("BASS: Creating new {0} channel mixer for frequency {1}", wasapiInfo.chans, wasapiInfo.freq);
_mixer = BassMix.BASS_Mixer_StreamCreate(wasapiInfo.freq, wasapiInfo.chans, mixerFlags);
if (_mixer == 0)
{
Log.Error("BASS: Unable to create Mixer. Reason: {0}.",
Enum.GetName(typeof(BASSError), Bass.BASS_ErrorGetCode()));
return(false);
}
}
BassWasapi.BASS_WASAPI_SetVolume(BASSWASAPIVolume.BASS_WASAPI_CURVE_DB, (float)Config.StreamVolume / 100f);
BassWasapi.BASS_WASAPI_Start();
result = true;
}
else
{
Log.Error("BASS: Couldn't init WASAPI device. Error: {0}", Enum.GetName(typeof(BASSError), Bass.BASS_ErrorGetCode()));
}
break;
}
if (result)
{
Log.Debug("BASS: Successfully created BASS Mixer stream");
}
return(result);
}
/// <summary>
/// End of Playback for a stream has been signaled
/// Send event to Bass player to start playback of next song
/// </summary>
/// <param name="handle"></param>
/// <param name="stream"></param>
/// <param name="data"></param>
/// <param name="userData"></param>
private void PlaybackEndProc(int handle, int stream, int data, IntPtr userData)
{
try
{
MusicStream musicstream;
// Get the GC handle of the pinned object
try
{
musicstream = (MusicStream)_pinnedObjects[userData.ToInt32()].Target;
}
catch (KeyNotFoundException ex)
{
Log.Error("BASS: GCHandle of Musicstream not found in Dictionary {0} {1}", userData.ToInt32(), ex.Message);
return;
}
Log.Debug("BASS: End of Song {0}", musicstream.FilePath);
// We need to find out, if the nextsongs sample rate and / or number of channels are different to the one just ended
// If this is the case we need a new mixer and the OnMusicStreamMessage needs to be invoked in a thread to avoid crashes.
// In order to have gapless playback, it needs to be invoked in sync.
MusicStream nextStream = null;
Playlists.PlayListItem nextSong = Playlists.PlayListPlayer.SingletonPlayer.GetNextItem();
MusicStream._fileType = Utils.GetFileType(musicstream.FilePath);
if (nextSong != null && MusicStream._fileType.FileMainType != FileMainType.WebStream)
{
nextStream = new MusicStream(nextSong.FileName, true);
}
else if (MusicStream._fileType.FileMainType == FileMainType.WebStream)
{
if (MusicStreamMessage != null)
{
MusicStreamMessage(musicstream, MusicStream.StreamAction.InternetStreamChanged);
return;
}
}
bool newMixerNeeded = false;
if (nextStream != null && nextStream.BassStream != 0)
{
if (_bassPlayer.NewMixerNeeded(nextStream))
{
newMixerNeeded = true;
}
nextStream.Dispose();
}
if (newMixerNeeded)
{
if (Config.MusicPlayer == AudioPlayer.WasApi && BassWasapi.BASS_WASAPI_IsStarted())
{
BassWasapi.BASS_WASAPI_Stop(true);
}
// Unplug the Source channel from the mixer
Log.Debug("BASS: Unplugging source channel from Mixer.");
BassMix.BASS_Mixer_ChannelRemove(musicstream.BassStream);
// invoke a thread because we need a new mixer
Log.Debug("BASS: Next song needs a new mixer.");
new Thread(() =>
{
if (MusicStreamMessage != null)
{
MusicStreamMessage(musicstream, MusicStream.StreamAction.Crossfading);
}
})
{
Name = "BASS"
}.Start();
}
else
{
if (MusicStreamMessage != null)
{
MusicStreamMessage(musicstream, MusicStream.StreamAction.Crossfading);
}
}
}
catch (AccessViolationException ex)
{
Log.Error("BASS: Caught AccessViolationException in Playback End Proc {0}", ex.Message);
}
}
/// <summary>
/// This Message is sent from a MusicStream
/// </summary>
/// <param name="sender"></param>
/// <param name="action"></param>
private void OnMusicStreamMessage(object sender, MusicStream.StreamAction action)
{
if (sender == null)
{
return;
}
MusicStream musicStream = (MusicStream)sender;
// we want gapless playback for external controller (aka UPnP Controller)
// therefore we use the same mechanism
if (g_Player.ExternalController && action == MusicStream.StreamAction.InternetStreamChanged)
action = MusicStream.StreamAction.Crossfading;
switch (action)
{
case MusicStream.StreamAction.Ended:
break;
case MusicStream.StreamAction.Crossfading:
string nextSong = Playlists.PlayListPlayer.SingletonPlayer.GetNextSong();
if (nextSong != string.Empty)
{
g_Player.OnChanged(nextSong);
PlayInternal(nextSong);
g_Player.currentMedia = g_Player.MediaType.Music;
g_Player.currentFilePlaying = nextSong;
g_Player.OnStarted();
NotifyPlaying = true;
}
else
{
Log.Debug("BASS: Reached end of playlist.");
g_Player.OnStopped();
Stop();
}
break;
case MusicStream.StreamAction.InternetStreamChanged:
_tagInfo = musicStream.StreamTags;
if (InternetStreamSongChanged != null)
{
InternetStreamSongChanged(this);
}
break;
case MusicStream.StreamAction.Freed:
{
_mixer.FreeGcHandle(musicStream.BassStream);
musicStream.Dispose();
}
break;
case MusicStream.StreamAction.Disposed:
// Remove the stream from the active streams and free it
lock (_streams)
{
if (_streams.Contains(musicStream))
{
_streams.Remove(musicStream);
}
}
break;
}
}
/// <summary>
/// End of Playback for a stream has been signaled
/// Send event to Bass player to start playback of next song
/// </summary>
/// <param name="handle"></param>
/// <param name="stream"></param>
/// <param name="data"></param>
/// <param name="userData"></param>
private void PlaybackEndProc(int handle, int stream, int data, IntPtr userData)
{
try
{
GCHandle gch = GCHandle.FromIntPtr(userData);
MusicStream musicstream = (MusicStream)gch.Target;
Log.Debug("BASS: End of Song {0}", musicstream.FilePath);
// We need to find out, if the nextsongs sample rate and / or number of channels are different to the one just ended
// If this is the case we need a new mixer and the OnMusicStreamMessage needs to be invoked in a thread to avoid crashes.
// In order to have gapless playback, it needs to be invoked in sync.
MusicStream nextStream = null;
Playlists.PlayListItem nextSong = Playlists.PlayListPlayer.SingletonPlayer.GetNextItem();
MusicStream._fileType = Utils.GetFileType(musicstream.FilePath);
if (nextSong != null && MusicStream._fileType.FileMainType != FileMainType.WebStream)
{
nextStream = new MusicStream(nextSong.FileName, true);
}
else if (MusicStream._fileType.FileMainType == FileMainType.WebStream)
{
if (MusicStreamMessage != null)
{
MusicStreamMessage(musicstream, MusicStream.StreamAction.InternetStreamChanged);
return;
}
}
bool newMixerNeeded = false;
if (nextStream != null && nextStream.BassStream != 0)
{
if (_bassPlayer.NewMixerNeeded(nextStream))
{
newMixerNeeded = true;
}
nextStream.Dispose();
}
if (newMixerNeeded)
{
if (Config.MusicPlayer == AudioPlayer.WasApi && BassWasapi.BASS_WASAPI_IsStarted())
{
BassWasapi.BASS_WASAPI_Stop(true);
}
// Unplug the Source channel from the mixer
Log.Debug("BASS: Unplugging source channel from Mixer.");
BassMix.BASS_Mixer_ChannelRemove(musicstream.BassStream);
// invoke a thread because we need a new mixer
Log.Debug("BASS: Next song needs a new mixer.");
new Thread(() =>
{
if (MusicStreamMessage != null)
{
MusicStreamMessage(musicstream, MusicStream.StreamAction.Crossfading);
}
}) { Name = "BASS" }.Start();
}
else
{
if (MusicStreamMessage != null)
{
MusicStreamMessage(musicstream, MusicStream.StreamAction.Crossfading);
}
}
}
catch (AccessViolationException)
{
Log.Error("BASS: Caught AccessViolationException in Playback End Proc");
}
}
/// <summary>
/// Sets a SyncPos on the mixer stream
/// </summary>
/// <param name="stream"></param>
/// <param name="timePos"></param>
public void SetSyncPos(MusicStream stream, double timePos)
{
double fadeOutSeconds = Config.CrossFadeIntervalMs / 1000.0;
double totalStreamLen = Bass.BASS_ChannelBytes2Seconds(stream.BassStream, Bass.BASS_ChannelGetLength(stream.BassStream, BASSMode.BASS_POS_BYTES));
long mixerPos = Bass.BASS_ChannelGetPosition(_mixer, BASSMode.BASS_POS_BYTES | BASSMode.BASS_POS_DECODE);
long syncPos = mixerPos + Bass.BASS_ChannelSeconds2Bytes(_mixer, totalStreamLen - timePos - fadeOutSeconds);
if (_syncProc != 0)
{
Bass.BASS_ChannelRemoveSync(_mixer, _syncProc);
}
GCHandle pFilePath = GCHandle.Alloc(stream);
_syncProc = Bass.BASS_ChannelSetSync(_mixer,
BASSSync.BASS_SYNC_ONETIME | BASSSync.BASS_SYNC_POS | BASSSync.BASS_SYNC_MIXTIME,
syncPos, _playbackEndProcDelegate,
GCHandle.ToIntPtr(pFilePath));
}
/// <summary>
/// Attach a stream to the Mixer
/// </summary>
/// <param name="stream"></param>
/// <returns></returns>
public bool AttachStream(MusicStream stream)
{
Bass.BASS_ChannelLock(_mixer, true);
// Set SynyPos at end of stream
SetSyncPos(stream, 0.0);
bool result = BassMix.BASS_Mixer_StreamAddChannel(_mixer, stream.BassStream,
BASSFlag.BASS_MIXER_NORAMPIN | BASSFlag.BASS_MIXER_BUFFER |
BASSFlag.BASS_MIXER_MATRIX | BASSFlag.BASS_MIXER_DOWNMIX |
BASSFlag.BASS_STREAM_AUTOFREE);
if (!result)
{
Log.Error("BASS: Error attaching stream to mixer. {0}", Bass.BASS_ErrorGetCode());
}
Bass.BASS_ChannelLock(_mixer, false);
if (result && _mixingMatrix != null)
{
Log.Debug("BASS: Setting mixing matrix...");
result = BassMix.BASS_Mixer_ChannelSetMatrix(stream.BassStream, _mixingMatrix);
if (!result)
{
Log.Error("BASS: Error attaching Mixing Matrix. {0}", Bass.BASS_ErrorGetCode());
}
}
return result;
}
/// <summary>
/// This Message is sent from a MusicStream
/// </summary>
/// <param name="sender"></param>
/// <param name="action"></param>
void OnMusicStreamMessage(object sender, MusicStream.StreamAction action)
{
if (sender == null)
{
return;
}
MusicStream musicStream = (MusicStream)sender;
switch (action)
{
case MusicStream.StreamAction.Ended:
if (TrackPlaybackCompleted != null)
{
TrackPlaybackCompleted(this, musicStream.FilePath);
}
BassMix.BASS_Mixer_ChannelRemove(musicStream.BassStream);
musicStream.Dispose();
// Check, if PlaylistPlayer has to offer more files)
if (Playlists.PlayListPlayer.SingletonPlayer.GetNext() == string.Empty)
{
MusicStream currentStream = GetCurrentStream();
if (currentStream == null || !currentStream.IsPlaying)
{
Log.Debug("BASS: Reached end of playlist.");
Stop();
}
}
break;
case MusicStream.StreamAction.InternetStreamChanged:
if (InternetStreamSongChanged != null)
{
InternetStreamSongChanged(this);
}
break;
case MusicStream.StreamAction.Disposed:
// Remove the stream from the active streams and free it
lock (_streams)
{
if (_streams.Contains(musicStream))
{
_streams.Remove(musicStream);
}
}
break;
}
}
/// <summary>
/// Starts Playback of the given file
/// </summary>
/// <param name="filePath"></param>
/// <returns></returns>
public override bool Play(string filePath)
{
if (!_initialized)
{
return false;
}
MusicStream currentStream = GetCurrentStream();
bool result = true;
Speed = 1; // Set playback Speed to normal speed
try
{
if (currentStream != null && filePath.ToLowerInvariant().CompareTo(currentStream.FilePath.ToLowerInvariant()) == 0)
{
// Selected file is equal to current stream
if (_state == PlayState.Paused)
{
// Resume paused stream
currentStream.ResumePlayback();
result = Bass.BASS_Start();
if (Config.MusicPlayer == AudioPlayer.Asio)
{
result = BassAsio.BASS_ASIO_ChannelReset(false, 0, BASSASIOReset.BASS_ASIO_RESET_PAUSE); // Continue playback of Paused stream
}
else if (Config.MusicPlayer == AudioPlayer.WasApi)
{
BassWasapi.BASS_WASAPI_Start();
}
if (result)
{
_state = PlayState.Playing;
if (PlaybackStateChanged != null)
{
PlaybackStateChanged(this, PlayState.Paused, _state);
}
}
return result;
}
}
else
{
// Cue support
if (HandleCueFile(ref filePath))
{
return true;
}
}
// If we're not Crossfading, we want to stop the current stream at this time
if (currentStream != null && currentStream.IsPlaying)
{
if (!currentStream.IsCrossFading)
{
currentStream.FadeOutStop();
}
}
_state = PlayState.Init;
if (filePath == string.Empty)
{
return result;
}
_filePath = filePath;
MusicStream stream = new MusicStream(filePath);
if (stream.BassStream == 0)
{
return false;
}
_streams.Add(stream);
if (stream.Filetype.FileMainType == FileMainType.CDTrack)
{
_isCDDAFile = true;
}
else
{
_isCDDAFile = false;
}
bool playbackStarted = false;
if (_mixer == null)
{
_mixer = new MixerStream(this);
if (!_mixer.CreateMixer(stream))
{
Log.Error("BASS: Could not create Mixer. Aborting playback.");
return false;
}
// Start a StreamCopy for Visualisation purposes
if (HasViz)
{
_streamcopy.ChannelHandle = _mixer.BassStream;
_streamcopy.Start();
}
}
else
{
if (!_mixer.UpMixing)
{
BASS_CHANNELINFO chinfo = Bass.BASS_ChannelGetInfo(_mixer.BassStream);
if (!_mixer.WasApiShared &&
(chinfo.freq != stream.ChannelInfo.freq || chinfo.chans != stream.ChannelInfo.chans))
{
if (stream.ChannelInfo.freq != _mixer.WasApiMixedFreq ||
stream.ChannelInfo.chans != _mixer.WasApiMixedChans)
{
Log.Debug("BASS: New stream has different number of channels or sample rate. Need a new mixer.");
// The new stream has a different frequency or number of channels
// We need a new mixer
_mixer.Dispose();
_mixer = null;
_mixer = new MixerStream(this);
if (!_mixer.CreateMixer(stream))
{
Log.Error("BASS: Could not create Mixer. Aborting playback.");
return false;
}
if (HasViz)
{
_streamcopy.ChannelHandle = _mixer.BassStream;
}
}
}
}
}
// Enable events, for various Playback Actions to be handled
stream.MusicStreamMessage += new MusicStream.MusicStreamMessageHandler(OnMusicStreamMessage);
SetCueTrackEndPosition(stream);
// Plugin the stream into the Mixer
result = _mixer.AttachStream(stream);
if (Config.MusicPlayer == AudioPlayer.Asio && !BassAsio.BASS_ASIO_IsStarted())
{
BassAsio.BASS_ASIO_Stop();
playbackStarted = BassAsio.BASS_ASIO_Start(0);
}
else if (Config.MusicPlayer == AudioPlayer.WasApi && !BassWasapi.BASS_WASAPI_IsStarted())
{
playbackStarted = BassWasapi.BASS_WASAPI_Start();
}
else
{
if (Bass.BASS_ChannelIsActive(_mixer.BassStream) == BASSActive.BASS_ACTIVE_PLAYING)
{
playbackStarted = true;
}
else
{
playbackStarted = Bass.BASS_ChannelPlay(_mixer.BassStream, false);
}
}
if (stream.BassStream != 0 && playbackStarted)
{
Log.Info("BASS: playback started");
// Slide in the Stream over the Cross fade Interval
stream.SlideIn();
GUIMessage msg = new GUIMessage(GUIMessage.MessageType.GUI_MSG_PLAYBACK_STARTED, 0, 0, 0, 0, 0, null);
msg.Label = _filePath;
GUIWindowManager.SendThreadMessage(msg);
NotifyPlaying = true;
NeedUpdate = true;
_IsFullScreen = GUIGraphicsContext.IsFullScreenVideo;
_VideoPositionX = GUIGraphicsContext.VideoWindow.Left;
_VideoPositionY = GUIGraphicsContext.VideoWindow.Top;
_VideoWidth = GUIGraphicsContext.VideoWindow.Width;
_VideoHeight = GUIGraphicsContext.VideoWindow.Height;
// Re-Add the Viswindow to the Mainform Control (It got removed on a manual Stop)
SetVisualizationWindow();
SetVideoWindow();
PlayState oldState = _state;
_state = PlayState.Playing;
if (oldState != _state && PlaybackStateChanged != null)
{
PlaybackStateChanged(this, oldState, _state);
}
if (PlaybackStart != null)
{
PlaybackStart(this, stream.TotalStreamSeconds);
}
}
else
{
Log.Error("BASS: Unable to play {0}. Reason: {1}.", filePath,
Enum.GetName(typeof(BASSError), Bass.BASS_ErrorGetCode()));
stream.Dispose();
result = false;
}
}
catch (Exception ex)
{
result = false;
Log.Error("BASS: Play caused an exception: {0}.", ex);
}
return result;
}
/// <summary>
/// Checks, if a new Mixer would be needed, because of changes in Sample Rate or number of channels
/// </summary>
/// <param name="stream"></param>
/// <returns></returns>
public bool NewMixerNeeded(MusicStream stream)
{
if (!_mixer.UpMixing)
{
BASS_CHANNELINFO chinfo = Bass.BASS_ChannelGetInfo(_mixer.BassStream);
if (!_mixer.WasApiShared &&
(chinfo.freq != stream.ChannelInfo.freq || (chinfo.chans != stream.ChannelInfo.chans && stream.ChannelInfo.chans != 1)))
{
if (stream.ChannelInfo.freq != _mixer.WasApiMixedFreq ||
stream.ChannelInfo.chans != _mixer.WasApiMixedChans)
{
return true;
}
}
}
return false;
}
/// <summary>
/// Create a mixer using the stream attributes
/// </summary>
/// <param name="stream"></param>
/// <returns></returns>
public bool CreateMixer(MusicStream stream)
{
Log.Debug("BASS: ---------------------------------------------");
Log.Debug("BASS: Creating BASS mixer stream");
bool result = false;
BASSFlag mixerFlags = BASSFlag.BASS_MIXER_NONSTOP | BASSFlag.BASS_SAMPLE_FLOAT | BASSFlag.BASS_MIXER_NORAMPIN;
if (Config.MusicPlayer == AudioPlayer.Asio || Config.MusicPlayer == AudioPlayer.WasApi)
{
mixerFlags |= BASSFlag.BASS_STREAM_DECODE;
}
int outputChannels = _bassPlayer.DeviceChannels;
_mixingMatrix = null;
// See, if we need Upmixing
if (outputChannels > stream.ChannelInfo.chans)
{
Log.Debug("BASS: Found more output channels ({0}) than input channels ({1}). Check for upmixing.", outputChannels,
stream.ChannelInfo.chans);
_mixingMatrix = CreateMixingMatrix(stream.ChannelInfo.chans);
if (_mixingMatrix != null)
{
outputChannels = Math.Min(_mixingMatrix.GetLength(0), outputChannels);
_upmixing = true;
}
else
{
outputChannels = stream.ChannelInfo.chans;
}
}
else if (outputChannels < stream.ChannelInfo.chans)
{
// Downmix to Stereo
Log.Debug("BASS: Found more input channels ({0}) than output channels ({1}). Downmix.", stream.ChannelInfo.chans,
outputChannels);
outputChannels = Math.Min(outputChannels, 2);
}
Log.Debug("BASS: Creating {0} channel mixer with sample rate of {1}", outputChannels, stream.ChannelInfo.freq);
_mixer = BassMix.BASS_Mixer_StreamCreate(stream.ChannelInfo.freq, outputChannels, mixerFlags);
if (_mixer == 0)
{
Log.Error("BASS: Unable to create Mixer. Reason: {0}.",
Enum.GetName(typeof(BASSError), Bass.BASS_ErrorGetCode()));
return false;
}
switch (Config.MusicPlayer)
{
case AudioPlayer.Bass:
case AudioPlayer.DShow:
if (!Bass.BASS_ChannelPlay(_mixer, false))
{
Log.Error("BASS: Unable to start Mixer. Reason: {0}.", Enum.GetName(typeof(BASSError), Bass.BASS_ErrorGetCode()));
return false;
}
result = true;
break;
case AudioPlayer.Asio:
Log.Info("BASS: Initialising ASIO device");
if (BassAsio.BASS_ASIO_IsStarted() && !BassAsio.BASS_ASIO_Stop())
{
Log.Error("BASS: Error stopping Asio Device: {0}", BassAsio.BASS_ASIO_ErrorGetCode());
}
// Disable and Unjoin all the channels
if (!BassAsio.BASS_ASIO_ChannelReset(false, -1, BASSASIOReset.BASS_ASIO_RESET_ENABLE))
{
Log.Error("BASS: Error disabling Asio Channels: {0}", BassAsio.BASS_ASIO_ErrorGetCode());
}
if (!BassAsio.BASS_ASIO_ChannelReset(false, -1, BASSASIOReset.BASS_ASIO_RESET_JOIN))
{
Log.Error("BASS: Error unjoining Asio Channels: {0}", BassAsio.BASS_ASIO_ErrorGetCode());
}
_asioProc = new ASIOPROC(AsioCallback);
BassAsio.BASS_ASIO_ChannelSetVolume(false, -1, (float)Config.StreamVolume / 100f);
// enable 1st output channel...(0=first)
Log.Debug("BASS: Joining Asio Channel #{0}", "0");
BassAsio.BASS_ASIO_ChannelEnable(false, 0, _asioProc, new IntPtr(_mixer));
// and join the next channels to it
int numChannels = Math.Max(stream.ChannelInfo.chans, outputChannels);
for (int i = 1; i < numChannels; i++)
{
Log.Debug("BASS: Joining Asio Channel #{0}", i);
BassAsio.BASS_ASIO_ChannelJoin(false, i, 0);
}
// since we joined the channels, the next commands will apply to all channles joined
// so setting the values to the first channels changes them all automatically
// set the source format (float, as the decoding channel is)
if (!BassAsio.BASS_ASIO_ChannelSetFormat(false, 0, BASSASIOFormat.BASS_ASIO_FORMAT_FLOAT))
{
Log.Error("BASS: Error setting Asio Sample Format: {0}", BassAsio.BASS_ASIO_ErrorGetCode());
}
// set the source rate
Log.Debug("BASS: Set sample rate to {0}", stream.ChannelInfo.freq);
if (!BassAsio.BASS_ASIO_ChannelSetRate(false, 0, (double)stream.ChannelInfo.freq))
{
Log.Error("BASS: Error setting Asio Channel Samplerate: {0}", BassAsio.BASS_ASIO_ErrorGetCode());
}
// try to set the device rate too (saves resampling)
if (!BassAsio.BASS_ASIO_SetRate((double)stream.ChannelInfo.freq))
{
Log.Error("BASS: Error setting Asio Samplerate: {0}", BassAsio.BASS_ASIO_ErrorGetCode());
}
// and start playing it...start output using default buffer/latency
if (!BassAsio.BASS_ASIO_Start(0))
{
Log.Error("BASS: Error starting Asio playback: {0}", BassAsio.BASS_ASIO_ErrorGetCode());
}
Log.Info("BASS: Finished initialising ASIO device");
result = true;
break;
case AudioPlayer.WasApi:
Log.Info("BASS: Initialising WASAPI device");
try
{
BassWasapi.BASS_WASAPI_Free();
Log.Debug("BASS: Freed WASAPI device");
}
catch (Exception ex)
{
Log.Error("BASS: Exception freeing WASAPI. {0} {1}", ex.Message, ex.StackTrace);
}
BASSWASAPIInit initFlags = BASSWASAPIInit.BASS_WASAPI_AUTOFORMAT;
_wasapiProc = new WASAPIPROC(WasApiCallback);
bool wasApiExclusiveSupported = true;
// Check if we have an uneven number of channels
var chkChannels = outputChannels % 2;
if (chkChannels == 1)
{
Log.Warn("BASS: Found uneven number of channels {0}. increase output channels.", outputChannels);
outputChannels++; // increase the number of output channels
wasApiExclusiveSupported = false; // And indicate that we need a new mixer
}
// Handle the special cases of 3.0, 4.0 and 5.0 files being played on a 5.1 or 6.1 device
if (outputChannels == 3) // a 3.0 file
{
Log.Info("BASS: Found a 3 channel file. Set upmixing with LFE, LR, RR set to silent");
_mixingMatrix = CreateThreeDotZeroUpMixMatrix();
outputChannels = _bassPlayer.DeviceChannels; // WASAPI device should be initialised with all channels active
wasApiExclusiveSupported = false; // And indicate that we need a new mixer
}
else if (outputChannels == 4) // a 4.0 file
{
Log.Info("BASS: Found a 4 channel file. Set upmixing with Center and LFE set to silent");
_mixingMatrix = CreateFourDotZeroUpMixMatrix();
outputChannels = _bassPlayer.DeviceChannels; // WASAPI device should be initialised with all channels active
wasApiExclusiveSupported = false; // And indicate that we need a new mixer
}
else if (outputChannels == 5) // a 5.0 file
{
Log.Info("BASS: Found a 5 channel file. Set upmixing with LFE set to silent");
_mixingMatrix = CreateFiveDotZeroUpMixMatrix();
outputChannels = _bassPlayer.DeviceChannels; // WASAPI device should be initialised with all channels active
wasApiExclusiveSupported = false; // And indicate that we need a new mixer
}
// If Exclusive mode is used, check, if that would be supported, otherwise init in shared mode
if (Config.WasApiExclusiveMode)
{
initFlags |= BASSWASAPIInit.BASS_WASAPI_EXCLUSIVE;
_wasapiShared = false;
_wasapiMixedChans = 0;
_wasapiMixedFreq = 0;
BASSWASAPIFormat wasapiFormat = BassWasapi.BASS_WASAPI_CheckFormat(_bassPlayer.DeviceNumber,
stream.ChannelInfo.freq,
outputChannels,
BASSWASAPIInit.BASS_WASAPI_EXCLUSIVE);
if (wasapiFormat == BASSWASAPIFormat.BASS_WASAPI_FORMAT_UNKNOWN)
{
Log.Warn("BASS: WASAPI exclusive mode not directly supported. Let BASS WASAPI choose better mode.");
wasApiExclusiveSupported = false;
}
}
else
{
Log.Debug("BASS: Init WASAPI shared mode with Event driven system enabled.");
initFlags |= BASSWASAPIInit.BASS_WASAPI_SHARED | BASSWASAPIInit.BASS_WASAPI_EVENT;
// In case of WASAPI Shared mode we need to setup the mixer to use the same sample rate as set in
// the Windows Mixer, otherwise we wioll have increased playback speed
BASS_WASAPI_DEVICEINFO devInfo = BassWasapi.BASS_WASAPI_GetDeviceInfo(_bassPlayer.DeviceNumber);
Log.Debug("BASS: Creating {0} channel mixer for frequency {1}", devInfo.mixchans, devInfo.mixfreq);
_mixer = BassMix.BASS_Mixer_StreamCreate(devInfo.mixfreq, devInfo.mixchans, mixerFlags);
if (_mixer == 0)
{
Log.Error("BASS: Unable to create Mixer. Reason: {0}.",
Enum.GetName(typeof(BASSError), Bass.BASS_ErrorGetCode()));
return false;
}
_wasapiShared = true;
}
Log.Debug("BASS: Try to init WASAPI with a Frequency of {0} and {1} channels", stream.ChannelInfo.freq, outputChannels);
if (BassWasapi.BASS_WASAPI_Init(_bassPlayer.DeviceNumber, stream.ChannelInfo.freq, outputChannels,
initFlags | BASSWASAPIInit.BASS_WASAPI_BUFFER, Convert.ToSingle(Config.BufferingMs / 1000.0), 0f, _wasapiProc, IntPtr.Zero))
{
BASS_WASAPI_INFO wasapiInfo = BassWasapi.BASS_WASAPI_GetInfo();
Log.Debug("BASS: ---------------------------------------------");
Log.Debug("BASS: Buffer Length: {0}", wasapiInfo.buflen);
Log.Debug("BASS: Channels: {0}", wasapiInfo.chans);
Log.Debug("BASS: Frequency: {0}", wasapiInfo.freq);
Log.Debug("BASS: Format: {0}", wasapiInfo.format.ToString());
Log.Debug("BASS: InitFlags: {0}", wasapiInfo.initflags.ToString());
Log.Debug("BASS: Exclusive: {0}", wasapiInfo.IsExclusive.ToString());
Log.Debug("BASS: ---------------------------------------------");
Log.Info("BASS: WASAPI Device successfully initialised");
// Now we need to check, if WASAPI decided to switch to a different mode
if (Config.WasApiExclusiveMode && !wasApiExclusiveSupported)
{
// Recreate Mixer with new value
Log.Debug("BASS: Creating new {0} channel mixer for frequency {1}", wasapiInfo.chans, wasapiInfo.freq);
_mixer = BassMix.BASS_Mixer_StreamCreate(wasapiInfo.freq, wasapiInfo.chans, mixerFlags);
if (_mixer == 0)
{
Log.Error("BASS: Unable to create Mixer. Reason: {0}.",
Enum.GetName(typeof(BASSError), Bass.BASS_ErrorGetCode()));
return false;
}
}
BassWasapi.BASS_WASAPI_SetVolume(BASSWASAPIVolume.BASS_WASAPI_CURVE_DB, (float)Config.StreamVolume / 100f);
BassWasapi.BASS_WASAPI_Start();
result = true;
}
else
{
Log.Error("BASS: Couldn't init WASAPI device. Error: {0}", Enum.GetName(typeof(BASSError), Bass.BASS_ErrorGetCode()));
}
break;
}
if (result)
{
Log.Debug("BASS: Successfully created BASS Mixer stream");
}
return result;
}
/// <summary>
/// This Message is sent from a MusicStream
/// </summary>
/// <param name="sender"></param>
/// <param name="action"></param>
private void OnMusicStreamMessage(object sender, MusicStream.StreamAction action)
{
if (sender == null)
{
return;
}
MusicStream musicStream = (MusicStream)sender;
switch (action)
{
case MusicStream.StreamAction.Ended:
break;
case MusicStream.StreamAction.Crossfading:
string nextSong = Playlists.PlayListPlayer.SingletonPlayer.GetNextSong();
if (nextSong != string.Empty)
{
g_Player.OnChanged(nextSong);
PlayInternal(nextSong);
g_Player.currentMedia = g_Player.MediaType.Music;
g_Player.currentFilePlaying = nextSong;
g_Player.OnStarted();
NotifyPlaying = true;
}
else
{
Log.Debug("BASS: Reached end of playlist.");
g_Player.OnStopped();
Stop();
}
break;
case MusicStream.StreamAction.InternetStreamChanged:
_tagInfo = musicStream.StreamTags;
if (InternetStreamSongChanged != null)
{
InternetStreamSongChanged(this);
}
break;
case MusicStream.StreamAction.Freed:
{
musicStream.Dispose();
}
break;
case MusicStream.StreamAction.Disposed:
// Remove the stream from the active streams and free it
lock (_streams)
{
if (_streams.Contains(musicStream))
{
_streams.Remove(musicStream);
}
}
break;
}
}
/// <summary>
/// Sets a SyncPos on the mixer stream
/// </summary>
/// <param name="stream"></param>
/// <param name="timePos"></param>
public void SetSyncPos(MusicStream stream, double timePos)
{
double fadeOutSeconds = Config.CrossFadeIntervalMs / 1000.0;
double totalStreamLen = Bass.BASS_ChannelBytes2Seconds(stream.BassStream, Bass.BASS_ChannelGetLength(stream.BassStream, BASSMode.BASS_POS_BYTES));
long mixerPos = Bass.BASS_ChannelGetPosition(_mixer, BASSMode.BASS_POS_BYTES | BASSMode.BASS_POS_DECODE);
long syncPos = mixerPos + Bass.BASS_ChannelSeconds2Bytes(_mixer, totalStreamLen - timePos - fadeOutSeconds);
if (_syncProc != 0)
{
Bass.BASS_ChannelRemoveSync(_mixer, _syncProc);
}
// We might have stored the pinned object already, because we are skipping
// Only store object it, when it doesn't exist
if (!_pinnedObjects.ContainsKey(stream.BassStream))
{
Log.Debug("BASS: Updating Dictionary for GCHandle for stream {0}", stream.BassStream);
// Add the pinned object to the global dictionary, so that we can free it later in the Sync End Proc
_pinnedObjects.Add(stream.BassStream, GCHandle.Alloc(stream));
}
_syncProc = Bass.BASS_ChannelSetSync(_mixer,
BASSSync.BASS_SYNC_ONETIME | BASSSync.BASS_SYNC_POS | BASSSync.BASS_SYNC_MIXTIME,
syncPos, _playbackEndProcDelegate,
new IntPtr(stream.BassStream));
}