public int GetBufSize()
{
int ret = LibJpegTurboBridge.tjDecompressHeader(handle, srcPtr, (UInt32)srcLength, ref _width, ref _height);
if (ret != 0)
{
return(0);
}
return(EstimatedBufSize);
}
public void Close()
{
if (initialized)
{
pinnedArraySrc.Free();
LibJpegTurboBridge.tjDestroy(handle);
}
_width = 0;
_height = 0;
initialized = false;
}
public TurboJpegDecoder(byte[] srcBytes, TurboJpegDecoderBuffer _buffer = null)
{
buffer = _buffer;
if (buffer == null)
{
buffer = new TurboJpegDecoderBuffer();
}
handle = LibJpegTurboBridge.tjInitDecompress();
pinnedArraySrc = GCHandle.Alloc(srcBytes, GCHandleType.Pinned);
srcPtr = pinnedArraySrc.AddrOfPinnedObject();
srcLength = srcBytes.Length;
initialized = true;
}
public bool Decode(byte[] destBuf)
{
if (width == 0 && height == 0)
{
GetBufSize();
}
if (destBuf.Length < EstimatedBufSize)
{
return(false);
}
int ret = 0;
GCHandle pinnedArrayDest = GCHandle.Alloc(destBuf, GCHandleType.Pinned);
IntPtr destPtr = pinnedArrayDest.AddrOfPinnedObject();
ret = LibJpegTurboBridge.tjDecompress2(handle, srcPtr,
(UInt32)srcLength,
destPtr, 0, 0, 0,
(int)LibJpegTurboBridge.TJPF.TJPF_RGB,
LibJpegTurboBridge.TJFLAG_FASTDCT + LibJpegTurboBridge.TJFLAG_BOTTOMUP + LibJpegTurboBridge.TJFLAG_NOREALLOC);
pinnedArrayDest.Free();
return(ret == 0);
}