private void ParseStreamType(AviParser parser)
{
byte streamTypeByte0 = parser.GetByte();
byte streamTypeByte1 = parser.GetByte();
StreamType = (InformationType)(((short)streamTypeByte0 << 8) | streamTypeByte1);
parser.AddAttribute(new FormattedAttribute <Attribute, InformationType>(Attribute.InformationType, StreamType));
}
private bool ParseChannel(AviParser parser)
{
byte AsciiValueOfCharacterZero = Convert.ToByte('0');
byte channelByte0 = parser.GetByte();
byte channelByte1 = parser.GetByte();
if (!((char)channelByte0).IsHexDigit() || !((char)channelByte1).IsHexDigit())
{
this.Valid = false;
return(this.Valid);
}
Channel = (byte)((16 * (channelByte0 - AsciiValueOfCharacterZero)) + (channelByte1 - AsciiValueOfCharacterZero));
parser.AddAttribute(new FormattedAttribute <Attribute, byte>(Attribute.Channel, Channel));
return(true);
}
public override bool Parse(AviParser parser)
{
if (!base.Parse(parser))
{
return(false);
}
if ((uint)Size > MaxUnparsedBytes)
{
return(false);
}
// Put the position back to the beginning of the header.
// We want to be able the read the channel property.
parser.Position -= 8;
// Read the channel property (first 2 bytes of fourcc)
if (!ParseChannel(parser))
{
return(false);
}
// Read the information type property (last 2 bytes of fourcc)
ParseStreamType(parser);
// Skip the 'Size' bytes
parser.Position += 4;
ulong size = Math.Min(Size, parser.BytesRemaining);
if (size > 0)
{
StreamData = parser.GetDataPacket(parser.Position, (long)size);
}
// Show the number of bytes that go to the codec detector
parser.AddAttribute(new FormattedAttribute <Attribute, ulong>(Attribute.NumberOfBytesForCodecDetector, parser.BytesRemaining));
// Prevent AviChunk.ParseEnd() from displaying the unparsed bytes as hex dump
parser.Position += (long)parser.BytesRemaining;
return(Valid);
}
