/// <summary>
/// Read Track entity
/// </summary>
/// <param name="trackLen">
/// A <see cref="System.Int64"/>
/// </param>
public void ReadTrack(long trackLen)
{
string mkvElement = "";
long lenElement = 0;
long frameDuration = 0;
byte[] tmpBuffer;
// Create instance of new MkvTrackEntity
MkvTrackEntity mte = new MkvTrackEntity();
// Set end of Track
long endTrack = streamPosition + trackLen - 1;
// Loop for all track sub sections
while (streamPosition < endTrack)
{
// Read elememt and len
mkvElement = ReadElement();
lenElement = long.Parse(GetVInt(ReadElement()),System.Globalization.NumberStyles.AllowHexSpecifier);
// Debug
log.Info(utils.GetRow(mkvElement, lenElement, streamPosition));
if (mkvElement == MkvConstants.Header_TRACK_NUMBER)
{
// NUMBER
tmpBuffer = new byte[Convert.ToInt32(lenElement)];
ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
streamPosition += lenElement;
// Track Number
mte.Number= int.Parse(byteMan.GetHexFromBytes(tmpBuffer),
System.Globalization.NumberStyles.AllowHexSpecifier);
}
else if (mkvElement == MkvConstants.Header_TRACK_TYPE)
{
// TYPE
tmpBuffer = new byte[Convert.ToInt32(lenElement)];
ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
streamPosition += lenElement;
// Should be 1 byte len
mte.Type = Convert.ToInt32(tmpBuffer[0]);
}
else if (mkvElement == MkvConstants.Header_TRACK_LANG)
{
// LANGUAGE
tmpBuffer = new byte[Convert.ToInt32(lenElement)];
ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
streamPosition += lenElement;
// Convert Byte in Ascii
mte.Lang = byteMan.GetAsciiFromBytes(tmpBuffer);
}
else if (mkvElement == MkvConstants.Header_TRACK_CODEC)
{
// CODEC
tmpBuffer = new byte[Convert.ToInt32(lenElement)];
ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
streamPosition += lenElement;
// Convert Byte in Ascii
mte.Codec = byteMan.GetAsciiFromBytes(tmpBuffer);
}
else if (mkvElement == MkvConstants.Header_TRACK_CODEC_PRIV &&
mte.Codec == MkvConstants.VideoForWinFourCC)
{
// CODEC PRIVATE
tmpBuffer = new byte[Convert.ToInt32(lenElement)];
ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
streamPosition += lenElement;
// Get FourCC of codec description
mte.FourCC = byteMan.GetAsciiFromBytes(tmpBuffer, 16, 4);
}
else if (mkvElement == MkvConstants.Header_TRACK_VIDEO)
{
// VIDEO
ReadVideo(lenElement, ref mte);
}
else if (mkvElement == MkvConstants.Header_TRACK_AUDIO)
{
// AUDIO
ReadAudio(lenElement, ref mte);
}
else if (mkvElement == MkvConstants.Header_TRACK_DEFDURATION)
{
// FRAME DURATION
tmpBuffer = new byte[Convert.ToInt32(lenElement)];
ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
streamPosition += lenElement;
frameDuration = long.Parse(byteMan.GetHexFromBytes(tmpBuffer),
System.Globalization.NumberStyles.AllowHexSpecifier);
mte.FrameRate = (float)(Math.Pow(10, 9) / frameDuration);
}
else
{
// Skip section
streamPosition += lenElement;
ifs.Seek(lenElement, SeekOrigin.Current);
}
}
_mkvContainer.Add(mte);
}
/// <summary>
/// Read Video track and update TrackEntity
/// </summary>
/// <param name="videoLen">
/// A <see cref="System.Int64"/>
/// </param>
/// <param name="trackEntity">
/// A <see cref="MkvTrackEntity"/>
/// </param>
public void ReadVideo(long videoLen, ref MkvTrackEntity trackEntity)
{
string mkvElement = "";
long lenElement = 0;
byte[] tmpBuffer;
MkvVideoEntity mve = new MkvVideoEntity();
// Set end of Video
long endVideo = streamPosition + videoLen - 1;
// Loop for all video sub sections
while (streamPosition < endVideo)
{
// Read elememt and len
mkvElement = ReadElement();
lenElement = long.Parse(GetVInt(ReadElement()),System.Globalization.NumberStyles.AllowHexSpecifier);
// Debug
log.Info(utils.GetRow(mkvElement, lenElement, streamPosition));
if (mkvElement == MkvConstants.Header_VIDEO_PIXW)
{
// WIDTH
tmpBuffer = new byte[Convert.ToInt32(lenElement)];
ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
streamPosition += lenElement;
mve.PixelWidth = int.Parse(byteMan.GetHexFromBytes(tmpBuffer), System.Globalization.NumberStyles.AllowHexSpecifier);
}
else if (mkvElement == MkvConstants.Header_VIDEO_PIXH)
{
// HEIGHT
tmpBuffer = new byte[Convert.ToInt32(lenElement)];
ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
streamPosition += lenElement;
mve.PixelHeight = int.Parse(byteMan.GetHexFromBytes(tmpBuffer), System.Globalization.NumberStyles.AllowHexSpecifier);
}
else
{
// Skip section
streamPosition += lenElement;
ifs.Seek(lenElement, SeekOrigin.Current);
}
}
trackEntity.Video.Add(mve);
}
public void ReadAudio(long audioLen, ref MkvTrackEntity trackEntity)
{
string mkvElement = "";
long lenElement = 0;
byte[] tmpBuffer;
MkvAudioEntity mae = new MkvAudioEntity();
// Set end of Video
long endAudio = streamPosition + audioLen - 1;
// Loop for all audio sub sections
while (streamPosition < endAudio)
{
// Read elememt and len
mkvElement = ReadElement();
lenElement = long.Parse(GetVInt(ReadElement()),System.Globalization.NumberStyles.AllowHexSpecifier);
// Debug
log.Info(utils.GetRow(mkvElement, lenElement, streamPosition));
if (mkvElement == MkvConstants.Header_AUDIO_FREQ)
{
// FREQUENCY
tmpBuffer = new byte[Convert.ToInt32(lenElement)];
ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
streamPosition += lenElement;
tmpBuffer = byteMan.swapByte(tmpBuffer);
mae.Frequency = BitConverter.ToSingle(tmpBuffer,0);
}
else if (mkvElement == MkvConstants.Header_AUDIO_CHAN)
{
// CHANNELS
tmpBuffer = new byte[Convert.ToInt32(lenElement)];
ifs.Read(tmpBuffer, 0, Convert.ToInt32(lenElement));
streamPosition += lenElement;
mae.Channels = Convert.ToInt32(tmpBuffer[0]);
}
else
{
// Skip section
streamPosition += lenElement;
ifs.Seek(lenElement, SeekOrigin.Current);
}
}
trackEntity.Audio.Add(mae);
}