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/**
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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.
*
* Contributors: Amorilia (amorilia@gamebox.net)
*
* ***** END GPL LICENSE BLOCK *****
*/
#include <dds_api.h>
#include <Stream.h>
#include <DirectDrawSurface.h>
#include <stdio.h> // printf
#include <fstream>
extern "C" {
#include "imbuf.h"
#include "imbuf_patch.h"
#include "IMB_imbuf_types.h"
#include "IMB_imbuf.h"
#include "IMB_allocimbuf.h"
short imb_save_dds(struct ImBuf * ibuf, char *name, int flags)
{
return(0); /* todo: finish this function */
/* check image buffer */
if (ibuf == 0) return (0);
if (ibuf->rect == 0) return (0);
/* open file for writing */
std::ofstream fildes(name);
/* write header */
fildes << "DDS ";
fildes.close();
return(1);
}
int imb_is_a_dds(unsigned char *mem) // note: use at most first 32 bytes
{
/* heuristic check to see if mem contains a DDS file */
/* header.fourcc == FOURCC_DDS */
if ((mem[0] != 'D') || (mem[1] != 'D') || (mem[2] != 'S') || (mem[3] != ' ')) return(0);
/* header.size == 124 */
if ((mem[4] != 124) || mem[5] || mem[6] || mem[7]) return(0);
return(1);
}
struct ImBuf *imb_load_dds(unsigned char *mem, int size, int flags)
{
struct ImBuf * ibuf = 0;
DirectDrawSurface dds(mem, size); /* reads header */
unsigned char bits_per_pixel;
unsigned int *rect;
Image img;
unsigned int numpixels = 0;
int col;
unsigned char *cp = (unsigned char *) &col;
Color32 pixel;
Color32 *pixels = 0;
/* check if DDS is valid and supported */
if (!dds.isValid()) {
printf("DDS: not valid; header follows\n");
dds.printInfo();
return(0);
}
if (!dds.isSupported()) {
printf("DDS: format not supported\n");
return(0);
}
if ((dds.width() > 65535) || (dds.height() > 65535)) {
printf("DDS: dimensions too large\n");
return(0);
}
/* convert DDS into ImBuf */
if (dds.hasAlpha()) bits_per_pixel = 32;
else bits_per_pixel = 24;
ibuf = IMB_allocImBuf(dds.width(), dds.height(), bits_per_pixel, 0, 0);
if (ibuf == 0) return(0); /* memory allocation failed */
ibuf->ftype = DDS;
if ((flags & IB_test) == 0) {
if (!imb_addrectImBuf(ibuf)) return(ibuf);
if (ibuf->rect == 0) return(ibuf);
rect = ibuf->rect;
dds.mipmap(&img, 0, 0); /* load first face, first mipmap */
pixels = img.pixels();
numpixels = dds.width() * dds.height();
cp[3] = 0xff; /* default alpha if alpha channel is not present */
for (unsigned int i = 0; i < numpixels; i++) {
pixel = pixels[i];
cp[0] = pixel.r; /* set R component of col */
cp[1] = pixel.g; /* set G component of col */
cp[2] = pixel.b; /* set B component of col */
if (bits_per_pixel == 32)
cp[3] = pixel.a; /* set A component of col */
rect[i] = col;
}
IMB_flipy(ibuf);
}
return(ibuf);
}
} // extern "C"
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