private static Pair <AviStreamFormat, AviStreamHeader> GetAviStreamFormatAndHeader(IEnumerable <HeaderList> headerLists, StreamType streamType)
{
foreach (IResultNode headerList in headerLists)
{
AviStreamFormat aviStreamFormat = null;
AviStreamHeader aviStreamHeader = null;
foreach (AviChunk child in headerList.Children)
{
if (child is AviStreamFormat)
{
aviStreamFormat = (AviStreamFormat)child;
}
if (child is AviStreamHeader && ((AviStreamHeader)child).StreamType == (uint)streamType)
{
aviStreamHeader = (AviStreamHeader)child;
}
if (aviStreamFormat != null && aviStreamHeader != null)
{
return(new Pair <AviStreamFormat, AviStreamHeader>(aviStreamFormat, aviStreamHeader));
}
}
}
return(null);
}
private static string GetCodecStreamName(byte streamNumber, MovieEntry movieEntry, IEnumerable <HeaderList> headerLists)
{
StringBuilder codecStreamName = new StringBuilder();
codecStreamName.AppendFormat(CultureInfo.CurrentCulture, "Stream {0}", streamNumber);
if (movieEntry != null)
{
// The Stream Type
codecStreamName.AppendFormat(CultureInfo.CurrentCulture, ", {0}", Enum.GetName(typeof(InformationType), movieEntry.StreamType));
if (movieEntry.StreamType == InformationType.AudioData)
{
Pair <AviStreamFormat, AviStreamHeader> aviStreamFormatAndHeader = GetAviStreamFormatAndHeader(headerLists, StreamType.Audio);
if (aviStreamFormatAndHeader != null)
{
AviStreamFormat aviStreamFormat = aviStreamFormatAndHeader.First;
if (Enum.IsDefined(typeof(AviStreamFormat.FormatTag), (int)aviStreamFormat.FormatTagValue))
{
codecStreamName.AppendFormat(CultureInfo.CurrentCulture, ", {0}", Enum.GetName(typeof(AviStreamFormat.FormatTag), (int)aviStreamFormat.FormatTagValue).ToLower().Replace('_', ' '));
}
}
}
else if (movieEntry.StreamType == InformationType.CompressedVideoFrame ||
movieEntry.StreamType == InformationType.UncompressedVideoFrame)
{
Pair <AviStreamFormat, AviStreamHeader> aviStreamFormatAndHeader = GetAviStreamFormatAndHeader(headerLists, StreamType.Video);
if (aviStreamFormatAndHeader != null)
{
AviStreamFormat aviStreamFormat = aviStreamFormatAndHeader.First;
AviStreamHeader aviStreamHeader = aviStreamFormatAndHeader.Second;
string handler = aviStreamHeader.Handler.ToString4CC().ToLower(CultureInfo.CurrentCulture);
string compression = aviStreamFormat.Compression.ToString4CC().ToLower(CultureInfo.CurrentCulture);
if (!string.IsNullOrEmpty(handler))
{
codecStreamName.AppendFormat(CultureInfo.CurrentCulture, ", {0}", handler);
codecStreamName.AppendDescriptiveCodecName(handler);
}
if (compression != handler && !string.IsNullOrEmpty(compression))
{
codecStreamName.AppendFormat(CultureInfo.CurrentCulture, ", {0}", compression);
codecStreamName.AppendDescriptiveCodecName(compression);
}
}
}
}
return(codecStreamName.ToString());
}
public AviStreamFormat(AviChunk previousHeader)
: base(previousHeader, AviChunkName.AviStreamFormat)
{
AviStreamHeader aviStreamHeader = previousHeader as AviStreamHeader;
if (aviStreamHeader != null)
{
if (aviStreamHeader.StreamType == (uint)StreamType.Video)
{
_aviStreamFormatType = AviStreamFormatType.Video;
}
if (aviStreamHeader.StreamType == (uint)StreamType.Audio)
{
_aviStreamFormatType = AviStreamFormatType.Audio;
}
}
}
