/// <summary>
/// Function to determine if the data in a stream is readable by this codec.
/// </summary>
/// <param name="stream">The stream containing the data.</param>
/// <returns><b>true</b> if the data can be read, or <b>false</b> if not.</returns>
protected override bool OnIsReadable(Stream stream)
{
using (var reader = new GorgonBinaryReader(stream, true))
{
if ((stream.Length - stream.Position) < sizeof(ulong) * 2)
{
return(false);
}
ulong chunkHeader = reader.ReadUInt64();
// Skip the size, we don't need it.
reader.ReadUInt32();
ulong chunkFileData = reader.ReadUInt64();
return((chunkHeader == FileHeader.ChunkID()) && (chunkFileData == SpriteDataChunk.ChunkID()));
}
}