internal static PsnDataPacketChunk Deserialize(PsnChunkHeader chunkHeader, PsnBinaryReader reader)
{
var subChunks = new List <PsnChunk>();
foreach (var pair in FindSubChunkHeaders(reader, chunkHeader.DataLength))
{
reader.Seek(pair.Item2, SeekOrigin.Begin);
switch ((PsnDataPacketChunkId)pair.Item1.ChunkId)
{
case PsnDataPacketChunkId.PsnDataHeader:
subChunks.Add(PsnDataHeaderChunk.Deserialize(pair.Item1, reader));
break;
case PsnDataPacketChunkId.PsnDataTrackerList:
subChunks.Add(PsnDataTrackerListChunk.Deserialize(pair.Item1, reader));
break;
default:
subChunks.Add(PsnUnknownChunk.Deserialize(pair.Item1, reader));
break;
}
}
return(new PsnDataPacketChunk(subChunks));
}
/// <summary>
/// Searches the binary stream for the positions of sub-chunk headers
/// </summary>
/// <exception cref="IOException">An I/O error occurs. </exception>
/// <exception cref="NotSupportedException">The stream does not support seeking. </exception>
internal static IEnumerable <Tuple <PsnChunkHeader, long> > FindSubChunkHeaders(PsnBinaryReader reader,
int chunkDataLength)
{
var chunkHeaders = new List <Tuple <PsnChunkHeader, long> >();
long startPos = reader.BaseStream.Position;
while (reader.BaseStream.Position - startPos < chunkDataLength)
{
var chunkHeader = reader.ReadChunkHeader();
chunkHeaders.Add(Tuple.Create(chunkHeader, reader.BaseStream.Position));
reader.Seek(chunkHeader.DataLength, SeekOrigin.Current);
Debug.Assert(reader.BaseStream.Position - startPos <= chunkDataLength);
}
reader.Seek(startPos, SeekOrigin.Begin);
return(chunkHeaders);
}
internal static PsnDataTrackerListChunk Deserialize(PsnChunkHeader chunkHeader, PsnBinaryReader reader)
{
var subChunks = new List <PsnDataTrackerChunk>();
foreach (var pair in FindSubChunkHeaders(reader, chunkHeader.DataLength))
{
reader.Seek(pair.Item2, SeekOrigin.Begin);
subChunks.Add(PsnDataTrackerChunk.Deserialize(pair.Item1, reader));
}
return(new PsnDataTrackerListChunk(subChunks));
}
internal static PsnDataTrackerChunk Deserialize(PsnChunkHeader chunkHeader, PsnBinaryReader reader)
{
var subChunks = new List <PsnChunk>();
foreach (var pair in FindSubChunkHeaders(reader, chunkHeader.DataLength))
{
reader.Seek(pair.Item2, SeekOrigin.Begin);
switch ((PsnDataTrackerChunkId)pair.Item1.ChunkId)
{
case PsnDataTrackerChunkId.PsnDataTrackerPos:
subChunks.Add(PsnDataTrackerPosChunk.Deserialize(chunkHeader, reader));
break;
case PsnDataTrackerChunkId.PsnDataTrackerSpeed:
subChunks.Add(PsnDataTrackerSpeedChunk.Deserialize(chunkHeader, reader));
break;
case PsnDataTrackerChunkId.PsnDataTrackerOri:
subChunks.Add(PsnDataTrackerOriChunk.Deserialize(chunkHeader, reader));
break;
case PsnDataTrackerChunkId.PsnDataTrackerStatus:
subChunks.Add(PsnDataTrackerStatusChunk.Deserialize(chunkHeader, reader));
break;
case PsnDataTrackerChunkId.PsnDataTrackerAccel:
subChunks.Add(PsnDataTrackerAccelChunk.Deserialize(chunkHeader, reader));
break;
case PsnDataTrackerChunkId.PsnDataTrackerTrgtPos:
subChunks.Add(PsnDataTrackerTrgtPosChunk.Deserialize(chunkHeader, reader));
break;
case PsnDataTrackerChunkId.PsnDataTrackerTimestamp:
subChunks.Add(PsnDataTrackerTimestampChunk.Deserialize(chunkHeader, reader));
break;
default:
subChunks.Add(PsnUnknownChunk.Deserialize(chunkHeader, reader));
break;
}
}
return(new PsnDataTrackerChunk(chunkHeader.ChunkId, subChunks));
}
