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

		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];
	while( n && ( nBytes < nTotalBytes ) ) {
		data[0] = '\0';
		n = (int)io->read_proc(&data, sizeof(data), 1, handle);
		nBytes += n * sizeof(data);
	}
	
	if ( nBytes == nTotalBytes ) {
		bSuccess = true;
	}
	
	return bSuccess;
}

bool psdParser::ReadImageResources(FreeImageIO *io, fi_handle handle, LONG length) {
	psdImageResource oResource;
	bool bSuccess = false;
	
	if(length > 0) {
		oResource._Length = length;
	} else {
		BYTE Length[4];
		int n = (int)io->read_proc(&Length, sizeof(Length), 1, handle);
		
		oResource._Length = psdGetValue( Length, sizeof(oResource._Length) );
	}
	
	int nBytes = 0;
	int nTotalBytes = oResource._Length;
	
	while(nBytes < nTotalBytes) {
		int n = 0;
		oResource.Reset();
		
		n = (int)io->read_proc(&oResource._OSType, sizeof(oResource._OSType), 1, handle);
		if(n != 1) {
			FreeImage_OutputMessageProc(_fi_format_id, "This file contains damaged data causing an unexpected end-of-file - stop reading resources");
			return false;
		}
		nBytes += n * sizeof(oResource._OSType);

		if( (nBytes % 2) != 0 ) {
			return false;
		}
		
		int nOSType = psdGetValue((BYTE*)&oResource._OSType, sizeof(oResource._OSType));

		if ( PSD_RESOURCE == nOSType ) {
			BYTE ID[2];
			n = (int)io->read_proc(&ID, sizeof(ID), 1, handle);
			nBytes += n * sizeof(ID);
			
			oResource._ID = (short)psdGetValue( ID, sizeof(ID) );
			
			BYTE SizeOfName;
			n = (int)io->read_proc(&SizeOfName, sizeof(SizeOfName), 1, handle);
			nBytes += n * sizeof(SizeOfName);
			
			int nSizeOfName = psdGetValue( &SizeOfName, sizeof(SizeOfName) );
			if ( 0 < nSizeOfName ) {
				oResource._plName = new BYTE[nSizeOfName];
				n = (int)io->read_proc(oResource._plName, nSizeOfName, 1, handle);
				nBytes += n * nSizeOfName;
			}
			
			if ( 0 == (nSizeOfName % 2) ) {
				n = (int)io->read_proc(&SizeOfName, sizeof(SizeOfName), 1, handle);
				nBytes += n * sizeof(SizeOfName);
			}
			
			BYTE Size[4];
			n = (int)io->read_proc(&Size, sizeof(Size), 1, handle);
			nBytes += n * sizeof(Size);
			
			oResource._Size = psdGetValue( Size, sizeof(oResource._Size) );
			
			if ( 0 != (oResource._Size % 2) ) {
				// resource data must be even
				oResource._Size++;
			}

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

						break;
						
					// DisplayInfo structure
					case 1007:
						_bDisplayInfoFilled = true;
						nBytes += _displayInfo.Read(io, handle);
						break;
						
					// (Photoshop 4.0) Copyright flag
					// Boolean indicating whether image is copyrighted. Can be set via Property suite or by user in File Info...
					case 1034:
						n = (int)io->read_proc(&ShortValue, sizeof(ShortValue), 1, handle);
						nBytes += n * sizeof(ShortValue);
						_bCopyright = (1 == psdGetValue(ShortValue, sizeof(ShortValue)));
						break;
						
					// (Photoshop 4.0) Thumbnail resource for Photoshop 4.0 only
					case 1033:
					// (Photoshop 5.0) Thumbnail resource (supersedes resource 1033)
					case 1036:
					{
						_bThumbnailFilled = true;
						bool bBGR = (1033==oResource._ID);
						nBytes += _thumbnail.Read(io, handle, oResource._Size, bBGR);
						break;
					}
					
					// (Photoshop 5.0) Global Angle
					// 4 bytes that contain an integer between 0 and 359, which is the global
					// lighting angle for effects layer. If not present, assumed to be 30.
					case 1037:
						n = (int)io->read_proc(&IntValue, sizeof(IntValue), 1, handle);
						nBytes += n * sizeof(IntValue);
						_GlobalAngle = psdGetValue(IntValue, sizeof(_GlobalAngle) );
						break;

					// ICC profile
					case 1039:
						nBytes += _iccProfile.Read(io, handle, oResource._Size);
						break;

					// (Photoshop 6.0) Indexed Color Table Count
					// 2 bytes for the number of colors in table that are actually defined
					case 1046:
						n = (int)io->read_proc(&ShortValue, sizeof(ShortValue), 1, handle);
						nBytes += n * sizeof(ShortValue);
						_ColourCount = (short)psdGetValue(ShortValue, sizeof(ShortValue) );
						break;
						
					// (Photoshop 6.0) Transparency Index.
					// 2 bytes for the index of transparent color, if any.
					case 1047:
						n = (int)io->read_proc(&ShortValue, sizeof(ShortValue), 1, handle);
						nBytes += n * sizeof(ShortValue);
						_TransparentIndex = (short)psdGetValue(ShortValue, sizeof(ShortValue) );
						break;
						
					default:
					{
						// skip resource
						unsigned skip_length = MIN(oResource._Size, nTotalBytes - nBytes);
						io->seek_proc(handle, skip_length, SEEK_CUR);
						nBytes += skip_length;
					}
					break;
				}
			}
		}
  }
  
  if (nBytes == nTotalBytes) {
	  bSuccess = true;
  }
  
  return bSuccess;
  
} 

FIBITMAP* psdParser::ReadImageData(FreeImageIO *io, fi_handle handle) {
	if(handle == NULL) 
		return NULL;
	
	bool header_only = (_fi_flags & FIF_LOAD_NOPIXELS) == FIF_LOAD_NOPIXELS;
	
	WORD nCompression = 0;
	io->read_proc(&nCompression, sizeof(nCompression), 1, handle);
	
#ifndef FREEIMAGE_BIGENDIAN
	SwapShort(&nCompression);
#endif
	
	if((nCompression != PSDP_COMPRESSION_NONE && nCompression != PSDP_COMPRESSION_RLE))	{
		FreeImage_OutputMessageProc(_fi_format_id, "Unsupported compression %d", nCompression);
		return NULL;
	}
	
	const unsigned nWidth = _headerInfo._Width;
	const unsigned nHeight = _headerInfo._Height;
	const unsigned nChannels = _headerInfo._Channels;
	const unsigned depth = _headerInfo._BitsPerChannel;
	const unsigned bytes = (depth == 1) ? 1 : depth / 8;
		
	// channel(plane) line (BYTE aligned)
	const unsigned lineSize = (_headerInfo._BitsPerChannel == 1) ? (nWidth + 7) / 8 : nWidth * bytes;
	
	if(nCompression == PSDP_COMPRESSION_RLE && depth > 16) {
		FreeImage_OutputMessageProc(_fi_format_id, "Unsupported RLE with depth %d", depth);
		return NULL;
	}
	
	// build output buffer
	
	FIBITMAP* bitmap = NULL;
	unsigned dstCh = 0;
	
	short mode = _headerInfo._ColourMode;
	
	if(mode == PSDP_MULTICHANNEL && nChannels < 3) {
		// CM 
		mode = PSDP_GRAYSCALE; // C as gray, M as extra channel
	}
		
	bool needPalette = false;