/// <summary>
/// Initializes a new instance of the <see cref="DemoReader" /> class.
/// </summary>
/// <param name="demoStream">The demo stream.</param>
/// <param name="gameVersion">The game type.</param>
/// <exception cref="ArgumentNullException">
/// Thrown if demoStream or extension is null.
/// </exception>
public DemoReader(Stream demoStream, GameVersion gameVersion)
{
if (demoStream == null)
{
throw new ArgumentNullException("demoStream");
}
_demoStream = demoStream;
_gameVersion = gameVersion;
// Initialize the huffman tree.
_huffmanTree =
new HuffmanTree(gameVersion == GameVersion.CallOfDuty2
? HuffmanFrequencies.Quake3
: HuffmanFrequencies.CallOfDuty4);
// Skip first byte.
if (_gameVersion == GameVersion.CallOfDuty4 || _gameVersion == GameVersion.CallOfDuty5)
{
_demoStream.Seek(1, SeekOrigin.Begin);
}
}
/// <summary>
/// Decodes this message using the specified huffman tree.
/// </summary>
/// <param name="huffmanTree">The huffman tree to use.</param>
/// <returns>The decoded message.</returns>
public DemoMessage Decode(HuffmanTree huffmanTree)
{
return(new DemoMessage(huffmanTree.Decode(new BitArray(Data))));
}