public JPEGCompositeInfoChunk()
{
this.chunkSize = HeaderSize;
this.unCompressedSize = 0;
this.imageType = PSPDIBType.Thumbnail;
this.imageData = null;
}
public ChannelSubBlock(ushort majorVersion, uint uncompressedSize)
{
this.chunkSize = majorVersion > PSPConstants.majorVersion5 ? Version6HeaderSize : Version5HeaderSize;
this.compressedChannelLength = 0;
this.uncompressedChannelLength = uncompressedSize;
this.bitmapType = PSPDIBType.Image;
this.channelType = PSPChannelType.Composite;
this.channelData = null;
}
public ChannelSubBlock(BufferedBinaryReader br, PSPCompression compression, ushort majorVersion)
{
this.chunkSize = majorVersion > PSPConstants.majorVersion5 ? br.ReadUInt32() : 0U;
this.compressedChannelLength = br.ReadUInt32();
this.uncompressedChannelLength = br.ReadUInt32();
this.bitmapType = (PSPDIBType)br.ReadUInt16();
this.channelType = (PSPChannelType)br.ReadUInt16();
this.channelData = null;
long dif = (long)this.chunkSize - Version6HeaderSize;
if (dif > 0 && majorVersion > PSPConstants.majorVersion5)
{
br.Position += dif;
}
if (this.compressedChannelLength > 0U)
{
switch (compression)
{
case PSPCompression.None:
this.channelData = br.ReadBytes((int)this.compressedChannelLength);
break;
case PSPCompression.RLE:
this.channelData = RLE.Decompress(br.ReadBytes((int)this.compressedChannelLength), this.uncompressedChannelLength);
break;
case PSPCompression.LZ77:
byte[] compressedData = br.ReadBytes((int)this.compressedChannelLength);
this.channelData = new byte[this.uncompressedChannelLength];
ZlibCodec codec = new ZlibCodec
{
AvailableBytesIn = (int)this.compressedChannelLength,
AvailableBytesOut = (int)this.uncompressedChannelLength,
InputBuffer = compressedData,
OutputBuffer = this.channelData
};
codec.InitializeInflate();
int status = codec.Inflate(FlushType.Finish);
codec.EndInflate();
if (status != ZlibConstants.Z_OK && status != ZlibConstants.Z_STREAM_END)
{
throw new ZlibException(codec.Message);
}
break;
}
}
}
public JPEGCompositeInfoChunk(BufferedBinaryReader br)
{
this.chunkSize = br.ReadUInt32();
this.compressedSize = br.ReadUInt32();
this.unCompressedSize = br.ReadUInt32();
this.imageType = (PSPDIBType)br.ReadUInt16();
long dif = (long)this.chunkSize - HeaderSize;
if (dif > 0)
{
br.Position += dif;
}
this.imageData = br.ReadBytes((int)this.compressedSize);
}
