public void ParsePacketMessages(Int32 dataLength)
{
Int64 packetStartOffset = Position;
parsingPacket = true;
// read in data block
Byte[] frameData = fileReader.ReadBytes(dataLength);
bitBuffer = new BitBuffer(frameData);
BeginMessageLog(packetStartOffset, frameData);
// parse messages
while (true)
{
if (bitBuffer.BitsLeft < 8)
{
// done
break;
}
Int32 messageFrameOffset = bitBuffer.CurrentBit;
Byte messageId = (Byte)bitBuffer.ReadUnsignedBits(demo.NetworkProtocol >= 16 ? 6 : 5);
if (demo.Protocol15Hack)
{
bitBuffer.SeekBits(1);
}
String messageName = Enum.GetName(typeof(MessageId), messageId);
LogMessage(messageId, messageName, messageFrameOffset);
MessageHandler messageHandler = FindMessageHandler(messageId);
// unknown message
if (messageHandler == null)
{
throw new ApplicationException(String.Format("Cannot find message handler for message id \"[{0}] {1}\"", messageId, messageName));
}
// callback takes priority over length
if (messageHandler.Callback != null)
{
messageHandler.Callback();
}
else if (messageHandler.Length != -1)
{
Seek(messageHandler.Length);
}
else
{
throw new ApplicationException(String.Format("Unknown message id \"{0}\"", messageId));
}
}
parsingPacket = false;
}
public void MessageEvent()
{
if (demo.NetworkProtocol <= 43)
{
bitBuffer.Endian = BitBuffer.EndianType.Big;
}
UInt32 nEvents = bitBuffer.ReadUnsignedBits(5);
for (Int32 i = 0; i < nEvents; i++)
{
bitBuffer.SeekBits(10); // event index
Boolean packetIndexBit = bitBuffer.ReadBoolean();
if (packetIndexBit)
{
bitBuffer.SeekBits(11); // packet index
Boolean deltaBit = bitBuffer.ReadBoolean();
if (deltaBit)
{
GetDeltaStructure("event_t").ReadDelta(bitBuffer, null);
}
}
Boolean fireTimeBit = bitBuffer.ReadBoolean();
if (fireTimeBit)
{
bitBuffer.SeekBits(16); // fire time
}
}
bitBuffer.SkipRemainingBits();
bitBuffer.Endian = BitBuffer.EndianType.Little;
}
public void Seek(Int64 offset, SeekOrigin origin)
{
if (parsingPacket)
{
bitBuffer.SeekBits((Int32)(offset * 8), origin);
}
else
{
fileStream.Seek(offset, origin);
}
}
