tiff library?

	unsigned char* buf = img->getPixelData();    tsize_t linebytes;    TIFF* out;	int width = img->getCols();	int height = img->getRows();	int pixelSize = img->getPixelSize();	    out = TIFFOpen(filename.c_str(), "w");	if(!out)		throw std::runtime_error("Unable to open file '" + filename + "' for writing");	    TIFFSetField(out, TIFFTAG_IMAGEWIDTH,  width);    TIFFSetField(out, TIFFTAG_IMAGELENGTH, height);    TIFFSetField(out, TIFFTAG_ORIENTATION, ORIENTATION_BOTLEFT);    TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, pixelSize);    TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, 8);    TIFFSetField(out, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);    TIFFSetField(out, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);    TIFFSetField(out, TIFFTAG_COMPRESSION, COMPRESSION_NONE);    TIFFSetField(out, TIFFTAG_ROWSPERSTRIP, 1);    linebytes = pixelSize * width;	    for (uint32 row = height-1; row > 0; row--)	{		TIFFWriteScanline(out, buf + (row * width * pixelSize), row, 0);	}	    TIFFClose(out);

	int width = 0;	int height = 0;	int pixelSize = 0;		TIFF* tif = TIFFOpen(filename.c_str(), "r");	if(!tif)		throw std::runtime_error("Could not open file '" + filename + "', or it is not a valid TIFF file");		TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &width);	TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &height);	TIFFGetField(tif,  TIFFTAG_SAMPLESPERPIXEL, &pixelSize);	unsigned char* data = (unsigned char*)_TIFFmalloc((tsize_t)(TIFFNumberOfStrips(tif) * TIFFStripSize(tif)));	for(tstrip_t strip = 0; strip < TIFFNumberOfStrips(tif); strip++)		TIFFReadEncodedStrip(tif, strip, data + strip * TIFFStripSize(tif), (tsize_t)-1);	TIFFClose(tif);		if(pixelSize == 4)		img->setFromBuffer(data, width, height, Image::RGBA);	else if(pixelSize == 3)		img->setFromBuffer(data, width, height, Image::RGB);		_TIFFfree(data);