int imb_is_a_targa(unsigned char *buf)
{
TARGA tga;
return checktarga(&tga, buf);
}
ImBuf *imb_loadtarga(unsigned char *mem, size_t mem_size, int flags, char colorspace[IM_MAX_SPACE])
{
TARGA tga;
struct ImBuf *ibuf;
int col, count, size;
unsigned int *rect, *cmap = NULL /*, mincol = 0*/, maxcol = 0;
uchar *cp = (uchar *) &col;
if (checktarga(&tga, mem) == 0) return(NULL);
colorspace_set_default_role(colorspace, IM_MAX_SPACE, COLOR_ROLE_DEFAULT_BYTE);
if (flags & IB_test) ibuf = IMB_allocImBuf(tga.xsize, tga.ysize, tga.pixsize, 0);
else ibuf = IMB_allocImBuf(tga.xsize, tga.ysize, (tga.pixsize + 0x7) & ~0x7, IB_rect);
if (ibuf == NULL) return(NULL);
ibuf->ftype = TGA;
mem = mem + 18 + tga.numid;
cp[0] = 0xff;
cp[1] = cp[2] = 0;
if (tga.mapsize) {
/* load color map */
/*mincol = tga.maporig;*/ /*UNUSED*/
maxcol = tga.mapsize;
cmap = MEM_callocN(sizeof(unsigned int) * maxcol, "targa cmap");
for (count = 0; count < maxcol; count++) {
switch (tga.mapbits >> 3) {
case 4:
cp[0] = mem[3];
cp[1] = mem[0];
cp[2] = mem[1];
cp[3] = mem[2];
mem += 4;
break;
case 3:
cp[1] = mem[0];
cp[2] = mem[1];
cp[3] = mem[2];
mem += 3;
break;
case 2:
cp[1] = mem[1];
cp[0] = mem[0];
mem += 2;
break;
case 1:
col = *mem++;
break;
}
cmap[count] = col;
}
size = 0;
for (col = maxcol - 1; col > 0; col >>= 1) size++;
ibuf->planes = size;
if (tga.mapbits != 32) { /* set alpha bits */
cmap[0] &= BIG_LONG(0x00ffffffl);
}
}
ImBuf *imb_loadtarga(const unsigned char *mem,
size_t mem_size,
int flags,
char colorspace[IM_MAX_SPACE])
{
TARGA tga;
struct ImBuf *ibuf;
int count, size;
unsigned int *rect, *cmap = NULL /*, mincol = 0*/, cmap_max = 0;
int32_t cp_data;
uchar *cp = (uchar *)&cp_data;
if (checktarga(&tga, mem) == 0) {
return NULL;
}
colorspace_set_default_role(colorspace, IM_MAX_SPACE, COLOR_ROLE_DEFAULT_BYTE);
if (flags & IB_test) {
ibuf = IMB_allocImBuf(tga.xsize, tga.ysize, tga.pixsize, 0);
}
else {
ibuf = IMB_allocImBuf(tga.xsize, tga.ysize, (tga.pixsize + 0x7) & ~0x7, IB_rect);
}
if (ibuf == NULL) {
return NULL;
}
ibuf->ftype = IMB_FTYPE_TGA;
if (tga.imgtyp < 4) {
ibuf->foptions.flag |= RAWTGA;
}
mem = mem + 18 + tga.numid;
cp[0] = 0xff;
cp[1] = cp[2] = 0;
if (tga.mapsize) {
/* load color map */
/*mincol = tga.maporig;*/ /*UNUSED*/
cmap_max = tga.mapsize;
cmap = MEM_callocN(sizeof(unsigned int) * cmap_max, "targa cmap");
for (count = 0; count < cmap_max; count++) {
switch (tga.mapbits >> 3) {
case 4:
cp[0] = mem[3];
cp[1] = mem[0];
cp[2] = mem[1];
cp[3] = mem[2];
mem += 4;
break;
case 3:
cp[1] = mem[0];
cp[2] = mem[1];
cp[3] = mem[2];
mem += 3;
break;
case 2:
cp[1] = mem[1];
cp[0] = mem[0];
mem += 2;
break;
case 1:
cp_data = *mem++;
break;
}
cmap[count] = cp_data;
}
size = 0;
for (int cmap_index = cmap_max - 1; cmap_index > 0; cmap_index >>= 1) {
size++;
}
ibuf->planes = size;
if (tga.mapbits != 32) { /* set alpha bits */
cmap[0] &= BIG_LONG(0x00ffffffl);
}
}
