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/*
RGBAImage.cpp
Copyright (C) 2006 Yangli Hector Yee
This program is free software; you can redistribute it and/or modify it under the terms of the
GNU General Public License as published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program;
if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "RGBAImage.h"
#include "tiff.h"
#include "tiffio.h"
// Reads Tiff Images
RGBAImage* RGBAImage::ReadTiff(char *filename)
{
RGBAImage *fimg = 0;
TIFF* tif = TIFFOpen(filename, "r");
char emsg[1024];
if (tif) {
TIFFRGBAImage img;
if (TIFFRGBAImageBegin(&img, tif, 0, emsg)) {
size_t npixels;
uint32* raster;
npixels = img.width * img.height;
raster = (uint32*) _TIFFmalloc(npixels * sizeof (uint32));
if (raster != NULL) {
if (TIFFRGBAImageGet(&img, raster, img.width, img.height)) {
// result is in ABGR
fimg = new RGBAImage(img.width, img.height);
for (int y = 0; y < img.height; y++) {
for (int x = 0; x < img.width; x++) {
fimg->Set(x,y, raster[x + y * img.width]);
}
}
}
_TIFFfree(raster);
}
}
TIFFRGBAImageEnd(&img);
} else {
TIFFError(filename, emsg);
}
return fimg;
}
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