public IMediaTrack this[CodecTypes type, int id] {
get
{
if (MediaTracks.Count == 0)
{
return(null);
}
GenericMediaTrack track = null;
if (id == 0) // get the first track with the given type
{
if (MediaTracks.Any(trk => trk.Codec.CodecType == type))
{
track = (GenericMediaTrack)MediaTracks.First(trk => trk.Codec.CodecType == type);
}
}
else // get specific track with the given type and track ID
{
if (MediaTracks.Any(trk => trk.Codec.CodecType == type && trk.TrackID == id))
{
track = (GenericMediaTrack)MediaTracks.First(trk => trk.Codec.CodecType == type && trk.TrackID == id);
}
}
return(track);
}
}
/// <summary>
/// WriteSamples
/// Write several samples to the output file.
/// </summary>
/// <param name="slices"></param>
/// <param name="codecType"></param>
public override void WriteSamples(IEnumerable <Slice> slices, CodecTypes codecType)
{
if (codecType == CodecTypes.Audio)
{
// ignore audio
}
else if (codecType == CodecTypes.Video)
{
IMediaTrack trak = MediaTracks.First(t => t.Codec.CodecType == CodecTypes.Video);
foreach (Slice sample in slices)
{
// convert to bit-stream format (prefix with 0001)
Stream mstrm = new MemoryStream(sample.SliceBytes);
Stream ostr = H264.H264Utilities.H264Stream(firstSample, trak.Codec.PrivateCodecData, mstrm, 0,
(uint)sample.SliceBytes.Length);
firstSample = false;
mstrm.Close();
ostr.Position = 0L;
byte[] buf = new byte[ostr.Length];
ostr.Read(buf, 0, (int)ostr.Length);
ostr.Close();
sample.SliceBytes = buf;
Stream.Write(sample.SliceBytes, 0, sample.SliceBytes.Length);
}
}
else
{
throw new Exception("WriteSamples: unknown codec type");
}
}
/// <summary>
/// WriteSamples
/// Overloaded method for writing slices directly.
/// </summary>
/// <param name="slices">A List of Sample(s)</param>
/// <param name="codecType">Member of CodecTypes enum</param>
public override void WriteSamples(IEnumerable <Slice> slices, CodecTypes codecType)
{
if (codecType == CodecTypes.Audio)
{
GenericAudioTrack audioTrack = (GenericAudioTrack)MediaTracks.First(tr => tr.Codec.CodecType == codecType);
QBoxTrackFormat trackFormat = (QBoxTrackFormat)audioTrack.TrackFormat;
trackFormat.WriteSamples(_binaryWriter, slices);
}
else if (codecType == CodecTypes.Video)
{
GenericVideoTrack videoTrack = (GenericVideoTrack)MediaTracks.First(tr => tr.Codec.CodecType == codecType);
QBoxTrackFormat trackFormat = (QBoxTrackFormat)videoTrack.TrackFormat;
trackFormat.WriteSamples(_binaryWriter, slices);
}
else
{
throw new Exception("WriteSamples: unknown codec type");
}
}