public CaptureSourceDVR(StreamSourceInfo sourceConfig, OpenGraphRequest openGraphRequest)
: base(sourceConfig, openGraphRequest)
{
AppLogger.Message("In CaptureSourceDVR constructor - CurrentProfile is " + CurrentProfile.Name);
_captureFilter = AddFilterByName(FilterCategory.VideoInputDevice, sourceConfig.Description);
_videoEncoder = AddFilterByName(FilterCategory.LegacyAmFilterCategory, "LEAD H264 Encoder (4.0)");
// _transcoder = AddFilterByName(FilterCategory.LegacyAmFilterCategory, "LEAD H264 Transcoder");
InitializeSink();
ConnectFilters(_captureFilter, "Capture", _videoEncoder, "XForm In");
// ConnectFilters(_videoEncoder, "XForm Out", _transcoder, "Input");
// ConnectFilterToMux(_transcoder, "Output", "Input 01");
ConnectFilterToMux(_videoEncoder, "XForm Out", "Input 01");
ConnectMuxToSink();
_videoEncoderControl = (ILMH264Encoder)_videoEncoder;
_videoEncoderControl.EnableRateControl = true;
_videoEncoderControl.BitRate = CurrentProfile.Video.ConstantBitRate * 1024;
_videoEncoderControl.OutputFormat = eH264OUTPUTFORMAT.H264FORMAT_IPOD; // seems to work the best
}
/// <summary>
/// Constructs the remainder of the graph (after the Demuxer) according to the source config and profile.
/// </summary>
private void BuildForProfile()
{
//Configure for specific codec / transcoding
//if UseHardwareEncoder is checked, we will simply hand off the Elementry Streams from the Air
if (SourceConfig.TVTuner.UseHardwareEncoder)
{
//connect video
ConnectFilterToNetMux(mpeg2Demux, "2", "Input 01");
//connect audio
ConnectFilterToNetMux(mpeg2Demux, "3", "Input 02");
}
else // if they want to use software encoder, we will encode using the default profile
{
if (CurrentProfile.Video != null)
{
if (CurrentProfile.Video.CodecType != VideoCodecType.H264)
{
throw new NotSupportedException("H.264 is the only supported target codec in software transcoding mode!");
}
if (CurrentProfile.Video.ImageSize != VideoImageSize.Undefined)
{
throw new NotSupportedException("Resizing is not supported!");
}
videoEncoder = FilterGraphTools.AddFilterByName(_graphBuilder, FilterCategory.LegacyAmFilterCategory, "LEAD H264 Encoder (4.0)");
if (videoEncoder == null)
{
throw new Exception("Could not instantiate H264 Encoder!");
}
h264Encoder = (ILMH264Encoder)videoEncoder;
if (h264Encoder == null)
{
throw new Exception("Could not query for ILMH264Encoder interface!");
}
FilterGraphTools.AddFilterByName(_graphBuilder, FilterCategory.LegacyAmFilterCategory, "Elecard MPEG-2 Video Decoder");
FilterGraphTools.ConnectFilters(_graphBuilder, mpeg2Demux, "2", videoEncoder, "XForm In", true);
h264Encoder.EncodingThreads = eH264ENCODINGTHREADS.H264THREAD_AUTO;
h264Encoder.FrameRate = -1;
h264Encoder.EncodingSpeed = eH264ENCODINGSPEED.H264SPEED_1;
//h264Encoder.EncodingSpeed = eH264ENCODINGSPEED.H264SPEED_2;
h264Encoder.EnableRateControl = true;
h264Encoder.BitRate = CurrentProfile.Video.ConstantBitRate * 1024;
h264Encoder.EnableSuperCompression = false;
h264Encoder.SymbolMode = eH264SYMBOLMODE.H264SYMBOL_CAVLC;
h264Encoder.OutputFormat = eH264OUTPUTFORMAT.H264FORMAT_STANDARD_H264;
h264Encoder.IFrameInterval = CurrentProfile.Video.KeyFrameRate;
h264Encoder.PFrameInterval = 0;
//connect video
ConnectFilterToNetMux(videoEncoder, "XForm Out", "Input 01");
}
if (CurrentProfile.Audio != null)
{
if (CurrentProfile.Audio.CodecType != AudioCodecType.DolbyDigital)
{
throw new NotSupportedException("Audio transcoding is not implemented!");
}
//connect audio
ConnectFilterToNetMux(mpeg2Demux, "3", (CurrentProfile.Video != null) ? "Input 02" : "Input 01");
}
}
}
