/// <summary>
/// Given a Stream ID for a video stream, return the video MediaType.
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public static MediaTypeVideoInfo StreamIdToVideoMediaType(int id)
{
byte[] frame = DatabaseUtility.GetFirstFrame(id);
if (frame == null)
{
return(null);
}
byte[] compressionData;
return(VideoMediaTypeFromFrame(frame, out compressionData));
}
/// <summary>
/// Given a Stream ID for an audio stream, return the Audio MediaType.
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public static MediaTypeWaveFormatEx StreamIdToAudioMediaType(int id)
{
byte[] frame = DatabaseUtility.GetFirstFrame(id);
if (frame == null)
{
return(null);
}
byte[] compressionData;
return(AudioMediaTypeFromFrame(frame, out compressionData));
}
/// <summary>
/// Return a ProfileData instance containing the MediaType and codec private data as
/// determined by the first frame of the stream referenced by the streamID.
/// Return null if there are no frames, or if stream payload is not audio or video.
/// </summary>
/// <param name="streamID"></param>
/// <returns></returns>
public static ProfileData StreamIdToProfileData(int streamID, PayloadType payload)
{
byte[] frame = DatabaseUtility.GetFirstFrame(streamID);
if (frame == null)
{
return(null);
}
if (payload == PayloadType.dynamicAudio)
{
return(FramesToProfileData(frame, null));
}
else if (payload == PayloadType.dynamicVideo)
{
return(FramesToProfileData(null, frame));
}
return(null);
}
/// <summary>
/// Construct and return a ProfileData instance
/// containing media type and codec private data for audio and video as
/// determined using the first audio and video frames referenced by the segment.
/// Audio sources in the segment other than the first will be ignored.
/// </summary>
/// <param name="segment"></param>
/// <returns></returns>
public static ProfileData SegmentToProfileData(ArchiveTranscoderJobSegment segment)
{
DateTime startDt = DateTime.Parse(segment.StartTime);
DateTime endDt = DateTime.Parse(segment.EndTime);
byte[] aframe = DatabaseUtility.GetFirstFrame(PayloadType.dynamicAudio, segment.AudioDescriptor[0].AudioCname,
segment.AudioDescriptor[0].AudioName, startDt.Ticks, endDt.Ticks);
if (Utility.SegmentFlagIsSet(segment, SegmentFlags.SlidesReplaceVideo))
{
return(AudioFrameToProfileData(aframe));
}
else
{
byte[] vframe = DatabaseUtility.GetFirstFrame(PayloadType.dynamicVideo, segment.VideoDescriptor.VideoCname,
segment.VideoDescriptor.VideoName, startDt.Ticks, endDt.Ticks);
return(FramesToProfileData(aframe, vframe));
}
}
