Cross Reference: /vbox/src/libs/libpng-1.2.8/pngrtran.c

Lines Matching defs:gray
96     * might actually be gray yet not be flagged as such. This is not a problem
712                png_ptr->background.gray *= (png_uint_16)0xff;
714                  =  png_ptr->background.blue = png_ptr->background.gray;
717                png_ptr->background.gray *= (png_uint_16)0x55;
719                  = png_ptr->background.blue = png_ptr->background.gray;
722                png_ptr->background.gray *= (png_uint_16)0x11;
724                  = png_ptr->background.blue = png_ptr->background.gray;
729                  = png_ptr->background.blue = png_ptr->background.gray;
912             png_ptr->background_1.gray = (png_uint_16)(pow(
913                (double)png_ptr->background.gray / m, g) * m + .5);
914             png_ptr->background.gray = (png_uint_16)(pow(
915                (double)png_ptr->background.gray / m, gs) * m + .5);
919                 (png_ptr->background.red != png_ptr->background.gray))
937                /* GRAY, GRAY ALPHA, RGB, or RGBA with gray background */
939                  = png_ptr->background_1.blue = png_ptr->background_1.gray;
941                  = png_ptr->background.blue = png_ptr->background.gray;
1237   gray-to-RGB, or you will have to test 3x as many bytes to check if a
1242   - Gray + simple transparency -> compare 1 or 2 gray bytes and composite
1245   - Gray + alpha -> composite with gray background and remove alpha bytes,
1248   To support RGB backgrounds for gray images we need:
1252                                   compared to doing composite with gray bkgrnd)
1255                                   compared with composite on gray background)
1259   in advance if the background was gray or RGB, and position the gray-to-RGB
1264    /* if gray -> RGB, do so now only if background is non-gray; else do later
1342    /* if gray -> RGB, do so now only if we did not do so above */
1519          shift[channels++] = row_info->bit_depth - sig_bits->gray;
2508             if (palette[i].red == (png_byte)png_ptr->trans_values.gray)
2575             if (i == (png_byte)png_ptr->trans_values.gray)
2630                         == trans_values->gray)
2633                         *sp |= (png_byte)(background->gray << shift);
2655                             == trans_values->gray)
2658                            *sp |= (png_byte)(background->gray << shift);
2685                             == trans_values->gray)
2688                            *sp |= (png_byte)(background->gray << shift);
2711                             == trans_values->gray)
2714                            *sp |= (png_byte)(background->gray << shift);
2741                             == trans_values->gray)
2744                            *sp |= (png_byte)(background->gray << shift);
2765                         if (*sp == trans_values->gray)
2767                            *sp = (png_byte)background->gray;
2781                         if (*sp == trans_values->gray)
2783                            *sp = (png_byte)background->gray;
2800                         if (v == trans_values->gray)
2803                            *sp = (png_byte)((background->gray >> 8) & 0xff);
2804                            *(sp + 1) = (png_byte)(background->gray & 0xff);
2823                         if (v == trans_values->gray)
2825                            *sp = (png_byte)((background->gray >> 8) & 0xff);
2826                            *(sp + 1) = (png_byte)(background->gray & 0xff);
2960                         *dp = (png_byte)background->gray;
2967                         png_composite(w, v, a, background_1->gray);
2988                         *dp = (png_byte)background->gray;
2992                         png_composite(*dp, *sp, a, background_1->gray);
2995                      *dp = (png_byte)background->gray;
3027                         *dp = (png_byte)((background->gray >> 8) & 0xff);
3028                         *(dp + 1) = (png_byte)(background->gray & 0xff);
3036                         png_composite_16(v, g, a, background_1->gray);
3062                         *dp = (png_byte)((background->gray >> 8) & 0xff);
3063                         *(dp + 1) = (png_byte)(background->gray & 0xff);
3071                         png_composite_16(v, g, a, background_1->gray);
3623          png_uint_16 gray = (png_uint_16)(trans_value ? trans_value->gray : 0);
3631                   gray = (png_uint_16)(gray*0xff);
3655                   gray = (png_uint_16)(gray*0x55);
3678                   gray = (png_uint_16)(gray*0x11);
3712                   if (*sp == gray)
3726                      ((png_uint_16)*(sp - 1) << 8)) == gray)
3981          sig_bit = (int)png_ptr->sig_bit.gray;