for (r = 0; r < 256; r+=0x33)
for (g = 0; g < 256; g+=0x33)
for (b = 0; b < 256; b += 0x33)
- setcol(quant->mc_colors+i++, r, g, b, 0);
+ setcol(quant->mc_colors+i++, r, g, b, 255);
quant->mc_count = i;
}
break;
*/
i_palidx *quant_translate(i_quantize *quant, i_img *img) {
i_palidx *result;
+ int bytes;
+
mm_log((1, "quant_translate(quant %p, img %p)\n", quant, img));
- result = mymalloc(img->xsize * img->ysize);
+ /* there must be at least one color in the paletted (though even that
+ isn't very useful */
+ if (quant->mc_count == 0) {
+ i_push_error(0, "no colors available for translation");
+ return NULL;
+ }
+
+ bytes = img->xsize * img->ysize;
+ if (bytes / img->ysize != img->xsize) {
+ i_push_error(0, "integer overflow calculating memory allocation");
+ return NULL;
+ }
+ result = mymalloc(bytes);
switch (quant->translate) {
case pt_closest:
return result;
}
-#ifdef HAVE_LIBGIF_THIS_NOT_USED
-
-#include "gif_lib.h"
-
-#define GET_RGB(im, x, y, ri, gi, bi, col) \
- i_gpix((im),(x),(y),&(col)); (ri)=(col).rgb.r; \
- if((im)->channels==3) { (bi)=(col).rgb.b; (gi)=(col).rgb.g; }
-
-static int
-quant_replicate(i_img *im, i_palidx *output, i_quantize *quant);
-
-
-/* Use the gif_lib quantization functions to quantize the image */
-static void translate_giflib(i_quantize *quant, i_img *img, i_palidx *out) {
- int x,y,ColorMapSize,colours_in;
- unsigned long Size;
- int i;
-
- GifByteType *RedBuffer = NULL, *GreenBuffer = NULL, *BlueBuffer = NULL;
- GifByteType *RedP, *GreenP, *BlueP;
- ColorMapObject *OutputColorMap = NULL;
-
- i_color col;
-
- mm_log((1,"translate_giflib(quant %p, img %p, out %p)\n", quant, img, out));
-
- /*if (!(im->channels==1 || im->channels==3)) { fprintf(stderr,"Unable to write gif, improper colorspace.\n"); exit(3); }*/
-
- ColorMapSize = quant->mc_size;
-
- Size = ((long) img->xsize) * img->ysize * sizeof(GifByteType);
-
-
- if ((OutputColorMap = MakeMapObject(ColorMapSize, NULL)) == NULL)
- m_fatal(0,"Failed to allocate memory for Output colormap.");
- /* if ((OutputBuffer = (GifByteType *) mymalloc(im->xsize * im->ysize * sizeof(GifByteType))) == NULL)
- m_fatal(0,"Failed to allocate memory for output buffer.");*/
-
- /* ******************************************************* */
- /* count the number of colours in the image */
- colours_in=i_count_colors(img, OutputColorMap->ColorCount);
-
- if(colours_in != -1) { /* less then the number wanted */
- /* so we copy them over as-is */
- mm_log((2,"image has %d colours, which fits in %d. Copying\n",
- colours_in,ColorMapSize));
- quant_replicate(img, out, quant);
- /* saves the colors, so don't fall through */
- return;
- } else {
-
- mm_log((2,"image has %d colours, more then %d. Quantizing\n",colours_in,ColorMapSize));
-
- if (img->channels >= 3) {
- if ((RedBuffer = (GifByteType *) mymalloc((unsigned int) Size)) == NULL) {
- m_fatal(0,"Failed to allocate memory required, aborted.");
- return;
- }
- if ((GreenBuffer = (GifByteType *) mymalloc((unsigned int) Size)) == NULL) {
- m_fatal(0,"Failed to allocate memory required, aborted.");
- myfree(RedBuffer);
- return;
- }
-
- if ((BlueBuffer = (GifByteType *) mymalloc((unsigned int) Size)) == NULL) {
- m_fatal(0,"Failed to allocate memory required, aborted.");
- myfree(RedBuffer);
- myfree(GreenBuffer);
- return;
- }
-
- RedP = RedBuffer;
- GreenP = GreenBuffer;
- BlueP = BlueBuffer;
-
- for (y=0; y< img->ysize; y++) for (x=0; x < img->xsize; x++) {
- i_gpix(img,x,y,&col);
- *RedP++ = col.rgb.r;
- *GreenP++ = col.rgb.g;
- *BlueP++ = col.rgb.b;
- }
-
- } else {
-
- if ((RedBuffer = (GifByteType *) mymalloc((unsigned int) Size))==NULL) {
- m_fatal(0,"Failed to allocate memory required, aborted.");
- return;
- }
-
- GreenBuffer=BlueBuffer=RedBuffer;
- RedP = RedBuffer;
- for (y=0; y< img->ysize; y++) for (x=0; x < img->xsize; x++) {
- i_gpix(img,x,y,&col);
- *RedP++ = col.rgb.r;
- }
- }
-
- if (QuantizeBuffer(img->xsize, img->ysize, &ColorMapSize, RedBuffer, GreenBuffer, BlueBuffer,
- out, OutputColorMap->Colors) == GIF_ERROR) {
- mm_log((1,"Error in QuantizeBuffer, unable to write image.\n"));
- }
- }
-
- myfree(RedBuffer);
- if (img->channels == 3) { myfree(GreenBuffer); myfree(BlueBuffer); }
-
- /* copy over the color map */
- for (i = 0; i < ColorMapSize; ++i) {
- quant->mc_colors[i].rgb.r = OutputColorMap->Colors[i].Red;
- quant->mc_colors[i].rgb.g = OutputColorMap->Colors[i].Green;
- quant->mc_colors[i].rgb.b = OutputColorMap->Colors[i].Blue;
- }
- quant->mc_count = ColorMapSize;
-}
-
-static
-int
-quant_replicate(i_img *im, GifByteType *output, i_quantize *quant) {
- int x, y, alloced, r, g=0, b=0, idx ;
- i_color col;
-
- alloced=0;
- for(y=0; y<im->ysize; y++) {
- for(x=0; x<im->xsize; x++) {
-
- GET_RGB(im, x,y, r,g,b, col);
-
- for(idx=0; idx<alloced; idx++) { /* linear search for an index */
- if(quant->mc_colors[idx].rgb.r==r &&
- quant->mc_colors[idx].rgb.g==g &&
- quant->mc_colors[idx].rgb.b==b) {
- break;
- }
- }
-
- if(idx >= alloced) { /* if we haven't already, we */
- idx=alloced++; /* add the colour to the map */
- if(quant->mc_size < alloced) {
- mm_log((1,"Tried to allocate more then %d colours.\n",
- quant->mc_size));
- return 0;
- }
- quant->mc_colors[idx].rgb.r=r;
- quant->mc_colors[idx].rgb.g=g;
- quant->mc_colors[idx].rgb.b=b;
- }
- *output=idx; /* fill output buffer */
- output++; /* with colour indexes */
- }
- }
- quant->mc_count = alloced;
- return 1;
-}
-
-#endif
-
static void translate_closest(i_quantize *quant, i_img *img, i_palidx *out) {
quant->perturb = 0;
translate_addi(quant, img, out);
i_sample_t *line;
const int *sample_indices;
+ mm_log((1, "makemap_addi(quant %p { mc_count=%d, mc_colors=%p }, imgs %p, count %d)\n",
+ quant, quant->mc_count, quant->mc_colors, imgs, count));
+
i_mempool_init(&mp);
clr = i_mempool_alloc(&mp, sizeof(cvec) * quant->mc_size);
}
/* mymalloc doesn't clear memory, so I think we need this */
for (; i < quant->mc_size; ++i) {
+ /*clr[i].r = clr[i].g = clr[i].b = 0;*/
+ clr[i].dr = 0;
+ clr[i].dg = 0;
+ clr[i].db = 0;
clr[i].fixed = 0;
clr[i].mcount = 0;
}
quant->mc_count = cnum;
#endif
+#if 0
+ mm_log((1, "makemap_addi returns - quant.mc_count = %d\n", quant->mc_count));
+ for (i = 0; i < quant->mc_count; ++i)
+ mm_log((5, " map entry %d: (%d, %d, %d)\n", i, clr[i].r, clr[i].g, clr[i].b));
+#endif
+
i_mempool_destroy(&mp);
}
projects / imager.git / blobdiff