private void DecompressChunk(object context)
{
DecompressChunkParms parms = (DecompressChunkParms)context;
try {
DecompressChunk(parms.CompressedBytes, parms.ChunkSize, parms.ChunkOffset, parms.DeferredFormatter);
} catch (Exception ex) {
parms.Exceptions.Add(ex);
}
}
void IDeferredSerializable.FinishDeserialization(Stream input, DeferredFormatter context)
{
// Allocate the memory
if (this.bitmapWidth != 0 && this.bitmapHeight != 0)
{
this.voidStar = Allocate(this.bitmapWidth, this.bitmapHeight, out this.bitmapHandle).ToPointer();
this.valid = true;
}
else
{
this.voidStar = Allocate(this.length).ToPointer();
this.valid = true;
}
// formatVersion should equal 0
int formatVersion = input.ReadByte();
if (formatVersion == -1)
{
throw new EndOfStreamException();
}
if (formatVersion != 0 && formatVersion != 1)
{
throw new SerializationException("formatVersion was neither zero nor one");
}
// chunkSize
uint chunkSize = ReadUInt(input);
PaintDotNet.Threading.ThreadPool threadPool = new PaintDotNet.Threading.ThreadPool(Processor.LogicalCpuCount);
ArrayList exceptions = new ArrayList(Processor.LogicalCpuCount);
WaitCallback callback = new WaitCallback(DecompressChunk);
// calculate chunkCount
uint chunkCount = (uint)((this.length + (long)chunkSize - 1) / (long)chunkSize);
bool[] chunksFound = new bool[chunkCount];
for (uint i = 0; i < chunkCount; ++i)
{
// chunkNumber
uint chunkNumber = ReadUInt(input);
if (chunkNumber >= chunkCount)
{
throw new SerializationException("chunkNumber read from stream is out of bounds");
}
if (chunksFound[chunkNumber])
{
throw new SerializationException("already encountered chunk #" + chunkNumber.ToString());
}
chunksFound[chunkNumber] = true;
// dataSize
uint dataSize = ReadUInt(input);
// calculate chunkOffset
long chunkOffset = (long)chunkNumber * (long)chunkSize;
// calculate decompressed chunkSize
uint thisChunkSize = Math.Min(chunkSize, (uint)(this.length - chunkOffset));
// bounds checking
if (chunkOffset < 0 || chunkOffset >= this.length || chunkOffset + thisChunkSize > this.length)
{
throw new SerializationException("data was specified to be out of bounds");
}
// read compressed data
byte[] compressedBytes = new byte[dataSize];
Utility.ReadFromStream(input, compressedBytes, 0, compressedBytes.Length);
// decompress data
if (formatVersion == 0)
{
DecompressChunkParms parms = new DecompressChunkParms(compressedBytes, thisChunkSize, chunkOffset, context, exceptions);
threadPool.QueueUserWorkItem(callback, parms);
}
else
{
fixed(byte *pbSrc = compressedBytes)
{
Memory.Copy((void *)((byte *)this.VoidStar + chunkOffset), (void *)pbSrc, thisChunkSize);
}
}
}
threadPool.Drain();
if (exceptions.Count > 0)
{
throw new SerializationException("Exception thrown by worker thread", (Exception)exceptions[0]);
}
}
void IDeferredSerializable.FinishDeserialization(Stream input, DeferredFormatter context)
{
// Allocate the memory
if (this.bitmapWidth != 0 && this.bitmapHeight != 0)
{
this.voidStar = Allocate(this.bitmapWidth, this.bitmapHeight, out this.bitmapHandle).ToPointer();
this.valid = true;
}
else
{
this.voidStar = Allocate(this.length).ToPointer();
this.valid = true;
}
// formatVersion should equal 0
int formatVersion = input.ReadByte();
if (formatVersion == -1)
{
throw new EndOfStreamException();
}
if (formatVersion != 0 && formatVersion != 1)
{
throw new SerializationException("formatVersion was neither zero nor one");
}
// chunkSize
uint chunkSize = ReadUInt(input);
PaintDotNet.Threading.ThreadPool threadPool = new PaintDotNet.Threading.ThreadPool(Processor.LogicalCpuCount);
ArrayList exceptions = new ArrayList(Processor.LogicalCpuCount);
WaitCallback callback = new WaitCallback(DecompressChunk);
// calculate chunkCount
uint chunkCount = (uint)((this.length + (long)chunkSize - 1) / (long)chunkSize);
bool[] chunksFound = new bool[chunkCount];
for (uint i = 0; i < chunkCount; ++i)
{
// chunkNumber
uint chunkNumber = ReadUInt(input);
if (chunkNumber >= chunkCount)
{
throw new SerializationException("chunkNumber read from stream is out of bounds");
}
if (chunksFound[chunkNumber])
{
throw new SerializationException("already encountered chunk #" + chunkNumber.ToString());
}
chunksFound[chunkNumber] = true;
// dataSize
uint dataSize = ReadUInt(input);
// calculate chunkOffset
long chunkOffset = (long)chunkNumber * (long)chunkSize;
// calculate decompressed chunkSize
uint thisChunkSize = Math.Min(chunkSize, (uint)(this.length - chunkOffset));
// bounds checking
if (chunkOffset < 0 || chunkOffset >= this.length || chunkOffset + thisChunkSize > this.length)
{
throw new SerializationException("data was specified to be out of bounds");
}
// read compressed data
byte[] compressedBytes = new byte[dataSize];
Utility.ReadFromStream(input, compressedBytes, 0, compressedBytes.Length);
// decompress data
if (formatVersion == 0)
{
DecompressChunkParms parms = new DecompressChunkParms(compressedBytes, thisChunkSize, chunkOffset, context, exceptions);
threadPool.QueueUserWorkItem(callback, parms);
}
else
{
fixed (byte *pbSrc = compressedBytes)
{
Memory.Copy((void *)((byte *)this.VoidStar + chunkOffset), (void *)pbSrc, thisChunkSize);
}
}
}
threadPool.Drain();
if (exceptions.Count > 0)
{
throw new SerializationException("Exception thrown by worker thread", (Exception)exceptions[0]);
}
}
