private Byte[] ReadFrameData(HalfLifeDemoParser.FrameHeader frameHeader, out Boolean writeFrame)
{
Byte[] result = null;
writeFrame = true;
if (frameHeader.Type == 0 || frameHeader.Type == 1)
{
// frame header
Byte[] frameHeaderDemoInfo = parser.Reader.ReadBytes(parser.GameDataDemoInfoLength);
Byte[] frameHeaderSequenceInfo = parser.Reader.ReadBytes(parser.GameDataSequenceInfoLength);
UInt32 gameDataLength = parser.Reader.ReadUInt32();
// frame data
Byte[] frameData = null;
if (gameDataLength != 0)
{
// read frame data
frameData = parser.Reader.ReadBytes((Int32)gameDataLength);
if (frameData.Length != gameDataLength)
{
throw new ApplicationException("Gamedata frame length doesn't match header.");
}
// Give the writer interface a chance to insert any new messages into the first gamedata frame.
if (frameHeader.Type == 1 && !foundPlaybackOffset)
{
demoWriterInterface.ProcessFirstGameDataFrame(ref frameData);
}
// parse frame messages
try
{
if (demoWriterInterface.ShouldParseGameDataMessages(frameHeader.Type))
{
parser.ParseGameDataMessages(frameData, demoWriterInterface.GetNewUserMessageId);
// set frame data to version modified by parsing
frameData = parser.BitBuffer.Data;
}
}
catch (ThreadAbortException)
{
throw;
}
catch (Exception ex)
{
Error("Error parsing gamedata frame.\n\n" + parser.ComputeMessageLog(), ex, true);
if (lastErrorResult != MessageWindow.Result.Continue)
{
throw new AbortWritingException();
}
else
{
writeFrame = false;
return(null);
}
}
}
// check for end of loading segment
if (frameHeader.Type == 1)
{
if (!foundPlaybackOffset)
{
// last 5 frame (end of segment) will have stored the correct offset
foundPlaybackOffset = true;
}
// count playback segment gamedata frames
nPlaybackFrames++;
}
// copy contents of frame into memorystream, return result
MemoryStream ms = new MemoryStream();
demoWriterInterface.WriteDemoInfo(frameHeaderDemoInfo, ms);
ms.Write(frameHeaderSequenceInfo, 0, frameHeaderSequenceInfo.Length);
if (gameDataLength == 0)
{
ms.Write(BitConverter.GetBytes(gameDataLength), 0, 4);
}
else
{
ms.Write(BitConverter.GetBytes(frameData.Length), 0, 4);
ms.Write(frameData, 0, frameData.Length);
}
return(ms.ToArray());
}
else if (frameHeader.Type == 3) // client command
{
String command = Common.ReadNullTerminatedString(parser.Reader, 64);
if (!demoWriterInterface.ShouldWriteClientCommand(command))
{
// don't write frame
writeFrame = false;
return(null);
}
parser.Seek(-64);
result = parser.Reader.ReadBytes(64);
if (result.Length != 64)
{
throw new ApplicationException("Unexpected client command frame data length.");
}
}
else if (Config.Settings.PlaybackRemoveWeaponAnimations && frameHeader.Type == 7)
{
parser.Seek(8);
writeFrame = false;
return(null);
}
else if (frameHeader.Type != 5)
{
Int32 frameLength = parser.GetFrameLength(frameHeader.Type);
if (frameLength != 0)
{
result = parser.Reader.ReadBytes(frameLength);
if (result.Length != frameLength)
{
throw new ApplicationException("Unexpected frame data length.");
}
}
}
return(result);
}