private void ShutDown(string errmsg)
{
bool err = !String.IsNullOrEmpty(errmsg);
if (err)
{
_reasonToStop = ReasonToFinishPlaying.DeviceLost;
}
if (IsFileSource && !err)
{
_reasonToStop = ReasonToFinishPlaying.StoppedByUser;
}
if (_vfr != null && _vfr.IsOpen)
{
try
{
_vfr.Dispose(); //calls close
}
catch (Exception ex)
{
MainForm.LogExceptionToFile(ex);
}
}
if (PlayingFinished != null)
{
PlayingFinished(this, _reasonToStop);
}
if (AudioFinished != null)
{
AudioFinished(this, _reasonToStop);
}
ClearBuffer();
}
private void FfmpegListener()
{
_reasonToStop = ReasonToFinishPlaying.StoppedByUser;
_vfr = null;
bool open = false;
string errmsg = "";
_realtime = !IsFileSource;
try
{
Program.FFMPEGMutex.WaitOne();
_vfr = new VideoFileReader();
//ensure http/https is lower case for string compare in ffmpeg library
int i = _source.IndexOf("://", StringComparison.Ordinal);
if (i > -1)
{
_source = _source.Substring(0, i).ToLower() + _source.Substring(i);
}
_vfr.Timeout = Timeout;
_vfr.AnalyzeDuration = AnalyzeDuration;
_vfr.Cookies = Cookies;
_vfr.UserAgent = UserAgent;
_vfr.Headers = Headers;
_vfr.Flags = -1;
_vfr.NoBuffer = _realtime;
_vfr.RTSPMode = RTSPMode;
_vfr.Open(_source);
open = true;
}
catch (Exception ex)
{
MainForm.LogErrorToFile(ex.Message + ": " + _source);
}
finally
{
try
{
Program.FFMPEGMutex.ReleaseMutex();
}
catch (ObjectDisposedException)
{
//can happen on shutdown
}
}
if (_vfr == null || !_vfr.IsOpen || !open)
{
ShutDown("Could not open stream" + ": " + _source);
return;
}
if (_stopEvent.WaitOne(0))
{
ShutDown("");
return;
}
bool hasaudio = false;
if (_vfr.Channels > 0)
{
hasaudio = true;
RecordingFormat = new WaveFormat(_vfr.SampleRate, 16, _vfr.Channels);
_waveProvider = new BufferedWaveProvider(RecordingFormat)
{
DiscardOnBufferOverflow = true, BufferDuration = TimeSpan.FromMilliseconds(500)
};
SampleChannel = new SampleChannel(_waveProvider);
SampleChannel.PreVolumeMeter += SampleChannelPreVolumeMeter;
if (HasAudioStream != null)
{
HasAudioStream(this, EventArgs.Empty);
}
}
HasAudioStream = null;
Duration = _vfr.Duration;
if (!_realtime)
{
_tOutput = new Thread(FrameEmitter)
{
Name = "ffmpeg frame emitter"
};
_tOutput.Start();
}
else
{
_tOutput = null;
}
_videoframes = new List <DelayedFrame>();
_audioframes = new List <DelayedAudio>();
double maxdrift = 0, firstmaxdrift = 0;
const int analyseInterval = 10;
DateTime dtAnalyse = DateTime.MinValue;
//LastFrame = Helper.Now;
if (_initialSeek > -1)
{
_vfr.Seek(_initialSeek);
}
try
{
while (!_stopEvent.WaitOne(5) && !MainForm.Reallyclose && NewFrame != null)
{
_bufferFull = !_realtime && (_videoframes.Count > MAXBuffer || _audioframes.Count > MAXBuffer);
if (!_paused && !_bufferFull)
{
if (DecodeFrame(analyseInterval, hasaudio, ref firstmaxdrift, ref maxdrift, ref dtAnalyse))
{
break;
}
if (_realtime && !_stopEvent.WaitOne(0))
{
if (_videoframes.Count > 0)
{
DelayedFrame q = _videoframes[0];
if (q.B != null)
{
if (NewFrame != null)
{
NewFrame(this, new NewFrameEventArgs(q.B));
}
q.B.Dispose();
}
_videoframes.RemoveAt(0);
}
if (_audioframes.Count > 0)
{
DelayedAudio q = _audioframes[0];
if (q.A != null)
{
ProcessAudio(q.A);
}
_audioframes.RemoveAt(0);
}
}
}
}
}
catch (Exception e)
{
MainForm.LogExceptionToFile(e);
errmsg = e.Message;
}
if (SampleChannel != null)
{
SampleChannel.PreVolumeMeter -= SampleChannelPreVolumeMeter;
SampleChannel = null;
}
if (_waveProvider != null)
{
if (_waveProvider.BufferedBytes > 0)
{
_waveProvider.ClearBuffer();
}
}
if (_tOutput != null)
{
try
{
if (!_tOutput.Join(TimeSpan.Zero))
{
_tOutput.Join();
}
}
catch {}
}
ShutDown(errmsg);
}
private void FfmpegListener()
{
_reasonToStop = ReasonToFinishPlaying.StoppedByUser;
_vfr = null;
bool open = false;
string errmsg = "";
_realtime = !IsFileSource;
try
{
Program.FFMPEGMutex.WaitOne();
_vfr = new VideoFileReader();
//ensure http/https is lower case for string compare in ffmpeg library
int i = _source.IndexOf("://", StringComparison.Ordinal);
if (i > -1)
{
_source = _source.Substring(0, i).ToLower() + _source.Substring(i);
}
_vfr.Timeout = Timeout;
_vfr.AnalyzeDuration = AnalyzeDuration;
_vfr.Cookies = Cookies;
_vfr.UserAgent = UserAgent;
_vfr.Headers = Headers;
_vfr.Flags = -1;
_vfr.NoBuffer = _realtime;
_vfr.RTSPMode = RTSPMode;
_vfr.Open(_source);
open = true;
}
catch (Exception ex)
{
MainForm.LogErrorToFile(ex.Message+": "+_source);
}
finally
{
try
{
Program.FFMPEGMutex.ReleaseMutex();
}
catch (ObjectDisposedException)
{
//can happen on shutdown
}
}
if (_vfr == null || !_vfr.IsOpen || !open)
{
ShutDown("Could not open stream" + ": " + _source);
return;
}
if (_stopEvent.WaitOne(0))
{
ShutDown("");
return;
}
bool hasaudio = false;
if (_vfr.Channels > 0)
{
hasaudio = true;
RecordingFormat = new WaveFormat(_vfr.SampleRate, 16, _vfr.Channels);
_waveProvider = new BufferedWaveProvider(RecordingFormat) {DiscardOnBufferOverflow = true, BufferDuration = TimeSpan.FromMilliseconds(500)};
SampleChannel = new SampleChannel(_waveProvider);
SampleChannel.PreVolumeMeter += SampleChannelPreVolumeMeter;
if (HasAudioStream != null)
{
HasAudioStream(this, EventArgs.Empty);
}
}
HasAudioStream = null;
Duration = _vfr.Duration;
if (!_realtime)
{
_tOutput = new Thread(FrameEmitter) {Name="ffmpeg frame emitter"};
_tOutput.Start();
}
else
{
_tOutput = null;
}
_videoframes = new List<DelayedFrame>();
_audioframes = new List<DelayedAudio>();
double maxdrift = 0, firstmaxdrift = 0;
const int analyseInterval = 10;
DateTime dtAnalyse = DateTime.MinValue;
//LastFrame = Helper.Now;
if (_initialSeek>-1)
_vfr.Seek(_initialSeek);
try
{
while (!_stopEvent.WaitOne(5) && !MainForm.Reallyclose && NewFrame!=null)
{
_bufferFull = !_realtime && (_videoframes.Count > MAXBuffer || _audioframes.Count > MAXBuffer);
if (!_paused && !_bufferFull)
{
if (DecodeFrame(analyseInterval, hasaudio, ref firstmaxdrift, ref maxdrift, ref dtAnalyse)) break;
if (_realtime && !_stopEvent.WaitOne(0))
{
if (_videoframes.Count > 0)
{
DelayedFrame q = _videoframes[0];
if (q.B != null)
{
if (NewFrame != null)
{
NewFrame(this, new NewFrameEventArgs(q.B));
}
q.B.Dispose();
}
_videoframes.RemoveAt(0);
}
if (_audioframes.Count > 0)
{
DelayedAudio q = _audioframes[0];
if (q.A != null)
{
ProcessAudio(q.A);
}
_audioframes.RemoveAt(0);
}
}
}
}
}
catch (Exception e)
{
MainForm.LogExceptionToFile(e);
errmsg = e.Message;
}
if (SampleChannel != null)
{
SampleChannel.PreVolumeMeter -= SampleChannelPreVolumeMeter;
SampleChannel = null;
}
if (_waveProvider != null)
{
if (_waveProvider.BufferedBytes > 0)
_waveProvider.ClearBuffer();
}
if (_tOutput != null)
{
try
{
if (!_tOutput.Join(TimeSpan.Zero))
_tOutput.Join();
}
catch {}
}
ShutDown(errmsg);
}
private void ShutDown(string errmsg)
{
bool err=!String.IsNullOrEmpty(errmsg);
if (err)
{
_reasonToStop = ReasonToFinishPlaying.DeviceLost;
}
if (IsFileSource && !err)
_reasonToStop = ReasonToFinishPlaying.StoppedByUser;
if (_vfr!=null && _vfr.IsOpen) {
try
{
_vfr.Dispose(); //calls close
}
catch (Exception ex)
{
MainForm.LogExceptionToFile(ex);
}
}
if (PlayingFinished != null)
PlayingFinished(this, _reasonToStop);
if (AudioFinished != null)
AudioFinished(this, _reasonToStop);
ClearBuffer();
}
private void FfmpegListener()
{
ReasonToFinishPlaying reasonToStop = ReasonToFinishPlaying.StoppedByUser;
VideoFileReader vfr = null;
Program.WriterMutex.WaitOne();
try
{
vfr = new VideoFileReader();
vfr.Open(_source);
}
catch (Exception ex)
{
Log.Error("", ex);//MainForm.LogExceptionToFile(ex);
}
Program.WriterMutex.ReleaseMutex();
if (vfr == null || !vfr.IsOpen)
{
if (PlayingFinished != null)
{
PlayingFinished(this, ReasonToFinishPlaying.VideoSourceError);
}
return;
}
bool hasaudio = false;
if (vfr.Channels > 0)
{
hasaudio = true;
RecordingFormat = new WaveFormat(vfr.SampleRate, 16, vfr.Channels);
WaveOutProvider = new BufferedWaveProvider(RecordingFormat)
{
DiscardOnBufferOverflow = true
};
_waveProvider = new BufferedWaveProvider(RecordingFormat)
{
DiscardOnBufferOverflow = true
};
_sampleChannel = new SampleChannel(_waveProvider);
_meteringProvider = new MeteringSampleProvider(_sampleChannel);
_meteringProvider.StreamVolume += MeteringProviderStreamVolume;
if (HasAudioStream != null)
{
HasAudioStream(this, EventArgs.Empty);
}
}
int interval = 1000 / ((vfr.FrameRate == 0) ? 25 : vfr.FrameRate);
byte[] data;
Bitmap frame;
try
{
while (!_stopEvent.WaitOne(0, false))
{
DateTime start = DateTime.Now;
frame = vfr.ReadVideoFrame();
if (frame == null)
{
reasonToStop = ReasonToFinishPlaying.EndOfStreamReached;
break;
}
if (NewFrame != null)
{
NewFrame(this, new NewFrameEventArgs(frame));
}
frame.Dispose();
if (hasaudio)
{
data = vfr.ReadAudioFrame();
if (DataAvailable != null)
{
_waveProvider.AddSamples(data, 0, data.Length);
if (Listening)
{
WaveOutProvider.AddSamples(data, 0, data.Length);
}
_mFramesReceived++;
//forces processing of volume level without piping it out
var sampleBuffer = new float[data.Length];
_meteringProvider.Read(sampleBuffer, 0, data.Length);
DataAvailable(this, new DataAvailableEventArgs((byte[])data.Clone()));
}
}
if (interval > 0)
{
// get frame extract duration
TimeSpan span = DateTime.Now.Subtract(start);
// miliseconds to sleep
int msec = interval - (int)span.TotalMilliseconds;
if ((msec > 0) && (_stopEvent.WaitOne(msec, false)))
{
break;
}
}
}
}
catch (Exception e)
{
if (VideoSourceError != null)
{
VideoSourceError(this, new VideoSourceErrorEventArgs(e.Message));
}
Log.Error("", e);//MainForm.LogExceptionToFile(e);
reasonToStop = ReasonToFinishPlaying.DeviceLost;
}
if (PlayingFinished != null)
{
PlayingFinished(this, reasonToStop);
}
}
