public Mp4ObjectDescriptor(Mp4Stream stream, Mp4DescriptorTag tag, uint headerSize, uint payloadSize) : base(tag, headerSize, payloadSize)
{
Mp4Descriptor descriptor;
long position = stream.Position;
ushort num2 = stream.ReadUInt16();
this.ObjectDescriptorId = (ushort)(num2 >> 6);
this.UrlFlag = (num2 & 0x20) != 0;
if (this.UrlFlag)
{
byte count = stream.ReadUInt08();
byte[] buffer = new byte[0x100];
stream.Read(buffer, count);
buffer[count] = 0;
this.Url = Encoding.ASCII.GetString(buffer, 0, count);
}
long offset = stream.Position;
this.SubDescriptors = new List <Mp4Descriptor>();
Mp4DescriptorFactory factory = new Mp4DescriptorFactory();
Mp4SubStream stream2 = new Mp4SubStream(stream, offset, (long)(payloadSize - ((uint)(offset - position))));
while ((descriptor = factory.Read(stream2)) != null)
{
this.SubDescriptors.Add(descriptor);
}
}
public Mp4Descriptor(Mp4DescriptorTag tag, uint headerSize, uint payloadSize)
{
this.Tag = tag;
this.HeaderSize = headerSize;
this.PayloadSize = payloadSize;
if ((headerSize < 2) || (headerSize > 5))
{
throw new Exception();
}
}
public Mp4Descriptor Read(Mp4Stream stream)
{
if ((stream.Length - stream.Position) == 0L)
{
return(null);
}
Mp4Descriptor descriptor = null;
long position = stream.Position;
Mp4DescriptorTag tag = (Mp4DescriptorTag)stream.ReadUInt08();
uint payloadSize = 0;
uint headerSize = 1;
uint num4 = 4;
byte num5 = 0;
do
{
headerSize++;
num5 = stream.ReadUInt08();
payloadSize = (payloadSize << 7) + ((uint)(num5 & 0x7f));
}while ((--num4 != 0) && ((num5 & 0x80) != 0));
switch (tag)
{
case Mp4DescriptorTag.OD:
case Mp4DescriptorTag.MP4_OD:
descriptor = new Mp4ObjectDescriptor(stream, tag, headerSize, payloadSize);
break;
case Mp4DescriptorTag.ES:
descriptor = new Mp4EsDescriptor(stream, headerSize, payloadSize);
break;
case Mp4DescriptorTag.DECODER_CONFIG:
descriptor = new Mp4DecoderConfigDescriptor(stream, headerSize, payloadSize);
break;
case Mp4DescriptorTag.DECODER_SPECIFIC_INFO:
descriptor = new Mp4DecoderSpecificInfoDescriptor(stream, headerSize, payloadSize);
break;
case Mp4DescriptorTag.SL_CONFIG:
if (payloadSize != 1)
{
throw new Exception("INVALID_FORMAT");
}
descriptor = new Mp4SLConfigDescriptor(stream, headerSize, payloadSize);
break;
default:
descriptor = new Mp4UnknownDescriptor(stream, tag, headerSize, payloadSize);
break;
}
stream.Seek((position + headerSize) + payloadSize);
return(descriptor);
}
public Mp4UnknownDescriptor(Mp4Stream stream, Mp4DescriptorTag tag, uint headerSize, uint payloadSize) : base(tag, headerSize, payloadSize)
{
this.Data = new byte[payloadSize];
stream.Read(this.Data, (int)payloadSize);
}