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src/Source/FreeImage/PSDParser.cpp  view on Meta::CPAN

	const long JFIF_startpos = io->tell_proc(handle);

	if(_dib) {
		FreeImage_Unload(_dib);
	}

	if(_Format == 1) {
		// kJpegRGB thumbnail image
		_dib = FreeImage_LoadFromHandle(FIF_JPEG, io, handle);
		if(isBGR) {
			SwapRedBlue32(_dib);
		}			
		// HACK: manually go to end of thumbnail, because (for some reason) LoadFromHandle consumes more bytes then available! 
		io->seek_proc(handle, block_end, SEEK_SET);
	}
	else {
		// kRawRGB thumbnail image		
		// ### Unimplemented (should be trivial)

		// skip the thumbnail part
		io->seek_proc(handle, iTotalData, SEEK_CUR);
		return iResourceSize;
	}
	
	nBytes += (block_end - JFIF_startpos); 

	return nBytes;
}

//---------------------------------------------------------------------------

psdICCProfile::psdICCProfile() : _ProfileSize(0), _ProfileData(NULL) {
}

psdICCProfile::~psdICCProfile() {
	clear();
}

void psdICCProfile::clear() { SAFE_DELETE_ARRAY(_ProfileData); _ProfileSize = 0;}

int psdICCProfile::Read(FreeImageIO *io, fi_handle handle, int size) {
	int nBytes = 0, n;
	
	clear();
	
	_ProfileData = new (std::nothrow) BYTE[size];
	if(NULL != _ProfileData) {
		n = (int)io->read_proc(_ProfileData, 1, size, handle);
		_ProfileSize = size;
		nBytes += n * sizeof(BYTE);
	}

	return nBytes;
}

//---------------------------------------------------------------------------

/**
Invert only color components, skipping Alpha/Black
(Can be useful as public/utility function)
*/
static
BOOL invertColor(FIBITMAP* dib) {
	FREE_IMAGE_TYPE type = FreeImage_GetImageType(dib);
	const unsigned Bpp = FreeImage_GetBPP(dib)/8;
	
	if((type == FIT_BITMAP && Bpp == 4) || type == FIT_RGBA16) {
		const unsigned width = FreeImage_GetWidth(dib);
		const unsigned height = FreeImage_GetHeight(dib);
		BYTE *line_start = FreeImage_GetScanLine(dib, 0);
		const unsigned pitch = FreeImage_GetPitch(dib);
		const unsigned triBpp = Bpp - (Bpp == 4 ? 1 : 2);
				
		for(unsigned y = 0; y < height; y++) {
			BYTE *line = line_start;

			for(unsigned x = 0; x < width; x++) {
				for(unsigned b=0; b < triBpp; ++b) {
					line[b] = ~line[b];
				}
					
				line += Bpp;
			}
			line_start += pitch;
		}
		
		return TRUE;
	}
	else {
		return FreeImage_Invert(dib);
	}
}

//---------------------------------------------------------------------------

psdParser::psdParser() {
	_bThumbnailFilled = false;
	_bDisplayInfoFilled = false;
	_bResolutionInfoFilled = false;
	_bResolutionInfoFilled_v2 = false;
	_bCopyright = false;
	_GlobalAngle = 30;
	_ColourCount = -1;
	_TransparentIndex = -1;
	_fi_flags = 0;
	_fi_format_id = FIF_UNKNOWN;
}

psdParser::~psdParser() {
}

bool psdParser::ReadLayerAndMaskInfoSection(FreeImageIO *io, fi_handle handle)	{
	bool bSuccess = false;
	
	BYTE DataLength[4];
	int nBytes = 0;
	int n = (int)io->read_proc(&DataLength, sizeof(DataLength), 1, handle);
	int nTotalBytes = psdGetValue( DataLength, sizeof(DataLength) );
	
	BYTE data[1];