private RtmpHeader ReadHeader()
{
int num1 = (int)this._reader.ReadByte();
AmfReader reader = this._reader;
int chunkStreamId = RtmpPacketReader.GetChunkStreamId((byte)num1, reader);
int num2 = 6;
ChunkMessageHeaderType messageHeaderType = (ChunkMessageHeaderType)(num1 >> num2);
RtmpHeader rtmpHeader1 = new RtmpHeader();
rtmpHeader1.StreamId = chunkStreamId;
int num3 = (uint)messageHeaderType > 0U ? 1 : 0;
rtmpHeader1.IsTimerRelative = num3 != 0;
RtmpHeader rtmpHeader2 = rtmpHeader1;
RtmpHeader rtmpHeader3;
if (!this._rtmpHeaders.TryGetValue(chunkStreamId, out rtmpHeader3) && messageHeaderType != ChunkMessageHeaderType.New)
{
rtmpHeader3 = rtmpHeader2.Clone();
}
switch (messageHeaderType)
{
case ChunkMessageHeaderType.New:
rtmpHeader2.Timestamp = this._reader.ReadUInt24();
rtmpHeader2.PacketLength = this._reader.ReadUInt24();
rtmpHeader2.MessageType = (MessageType)this._reader.ReadByte();
rtmpHeader2.MessageStreamId = this._reader.ReadReverseInt();
break;
case ChunkMessageHeaderType.SameSource:
rtmpHeader2.Timestamp = this._reader.ReadUInt24();
rtmpHeader2.PacketLength = this._reader.ReadUInt24();
rtmpHeader2.MessageType = (MessageType)this._reader.ReadByte();
rtmpHeader2.MessageStreamId = rtmpHeader3.MessageStreamId;
break;
case ChunkMessageHeaderType.TimestampAdjustment:
rtmpHeader2.Timestamp = this._reader.ReadUInt24();
rtmpHeader2.PacketLength = rtmpHeader3.PacketLength;
rtmpHeader2.MessageType = rtmpHeader3.MessageType;
rtmpHeader2.MessageStreamId = rtmpHeader3.MessageStreamId;
break;
case ChunkMessageHeaderType.Continuation:
rtmpHeader2.Timestamp = rtmpHeader3.Timestamp;
rtmpHeader2.PacketLength = rtmpHeader3.PacketLength;
rtmpHeader2.MessageType = rtmpHeader3.MessageType;
rtmpHeader2.MessageStreamId = rtmpHeader3.MessageStreamId;
rtmpHeader2.IsTimerRelative = rtmpHeader3.IsTimerRelative;
break;
default:
throw new SerializationException("Unexpected header type: " + (object)(int)messageHeaderType);
}
if (rtmpHeader2.Timestamp == 16777215)
{
rtmpHeader2.Timestamp = this._reader.ReadInt32();
}
return(rtmpHeader2);
}
public static int GetHeaderLength(ChunkMessageHeaderType chunkMessageHeaderType)
{
switch (chunkMessageHeaderType)
{
case ChunkMessageHeaderType.New:
return 11;
case ChunkMessageHeaderType.SameSource:
return 7;
case ChunkMessageHeaderType.TimestampAdjustment:
return 3;
case ChunkMessageHeaderType.Continuation:
return 0;
default:
return -1;
}
}
void WriteBasicHeaderAsync(ChunkMessageHeaderType messageHeaderFormat, int streamId)
{
var fmt = (byte)messageHeaderFormat;
if (streamId <= 63)
{
writer.WriteByteAsync((byte)((fmt << 6) + streamId));
}
else if (streamId <= 320)
{
writer.WriteByteAsync((byte)(fmt << 6));
writer.WriteByteAsync((byte)(streamId - 64));
}
else
{
writer.WriteByteAsync((byte)((fmt << 6) | 1));
writer.WriteByteAsync((byte)((streamId - 64) & 0xff));
writer.WriteByteAsync((byte)((streamId - 64) >> 8));
}
}
public static int GetHeaderLength(ChunkMessageHeaderType chunkMessageHeaderType)
{
switch (chunkMessageHeaderType)
{
case ChunkMessageHeaderType.New:
return(11);
case ChunkMessageHeaderType.SameSource:
return(7);
case ChunkMessageHeaderType.TimestampAdjustment:
return(3);
case ChunkMessageHeaderType.Continuation:
return(0);
default:
return(-1);
}
}
private void WriteBasicHeader(ChunkMessageHeaderType messageHeaderFormat, int streamId)
{
byte num = (byte)messageHeaderFormat;
if (streamId <= 63)
{
this._writer.WriteByte((byte)(((int)num << 6) + streamId));
}
else if (streamId <= 320)
{
this._writer.WriteByte((byte)((uint)num << 6));
this._writer.WriteByte((byte)(streamId - 64));
}
else
{
this._writer.WriteByte((byte)((int)num << 6 | 1));
this._writer.WriteByte((byte)(streamId - 64 & (int)byte.MaxValue));
this._writer.WriteByte((byte)(streamId - 64 >> 8));
}
}
private void WriteMessageHeader(RtmpHeader header, RtmpHeader previousHeader)
{
ChunkMessageHeaderType messageHeaderType = RtmpPacketWriter.GetMessageHeaderType(header, previousHeader);
this.WriteBasicHeader(messageHeaderType, header.StreamId);
int num = header.Timestamp < 16777215 ? header.Timestamp : 16777215;
switch (messageHeaderType)
{
case ChunkMessageHeaderType.New:
this._writer.WriteUInt24(num);
this._writer.WriteUInt24(header.PacketLength);
this._writer.WriteByte((byte)header.MessageType);
this._writer.WriteReverseInt(header.MessageStreamId);
goto case ChunkMessageHeaderType.Continuation;
case ChunkMessageHeaderType.SameSource:
this._writer.WriteUInt24(num);
this._writer.WriteUInt24(header.PacketLength);
this._writer.WriteByte((byte)header.MessageType);
goto case ChunkMessageHeaderType.Continuation;
case ChunkMessageHeaderType.TimestampAdjustment:
this._writer.WriteUInt24(num);
goto case ChunkMessageHeaderType.Continuation;
case ChunkMessageHeaderType.Continuation:
if (num < 16777215)
{
break;
}
this._writer.WriteInt32(header.Timestamp);
break;
default:
throw new ArgumentException("headerType");
}
}
void WriteBasicHeader(ChunkMessageHeaderType messageHeaderFormat, int streamId)
{
var fmt = (byte)messageHeaderFormat;
if (streamId <= 63)
{
writer.WriteByte((byte)((fmt << 6) + streamId));
}
else if (streamId <= 320)
{
writer.WriteByte((byte)(fmt << 6));
writer.WriteByte((byte)(streamId - 64));
}
else
{
writer.WriteByte((byte)((fmt << 6) | 1));
writer.WriteByte((byte)((streamId - 64) & 0xff));
writer.WriteByte((byte)((streamId - 64) >> 8));
}
}
