/// <summary>
/// Extract Video format and Chroma format
/// </summary>
private void GetVideoFormat(ref MpegStreamManager msManager, long offset)
{
byte marker = new byte();
bool isFounded = false;
long _offset = offset;
// search marker 0xB5 or 0xB8 was founded
isFounded = msManager.FindNextMarker(ref _offset, ref marker);
if (isFounded)
{
// founded one marker
// if (marker == 0xB8)
// {
// // [Group of pictures] founded...
// return;
// }
if (marker == 0xB5)
{
// [extension]
ParseExtension(_offset, ref msManager);
}
else
{
// in all other cases
return;
}
}
else
{
// marker not founded
return;
}
// Get Chroma Format Text
if (videoStream.ChromaFormat >= 1 &&
videoStream.ChromaFormat <= 3)
{
// Get chroma format text from chroma format table
videoStream.ChromaFormatText = MpegConstants.ChromaFormat[videoStream.ChromaFormat];
}
else
{
// Unknow chroma format
videoStream.ChromaFormatText = "Unknow";
}
// Get Video Format Text
if (videoStream.VideoFormat >= 0 &&
videoStream.VideoFormat <= 5)
{
// Get video format text from video format table
videoStream.VideoFormatText = MpegConstants.VideoFormat[videoStream.VideoFormat];
}
else
{
// Unknow video format
videoStream.VideoFormatText = "Unknow";
}
}
