Lines Matching refs:background
74 /* handle alpha and tRNS via a background color */
83 png_warning(png_ptr, "Application must supply a known background gamma");
88 png_memcpy(&(png_ptr->background), background_color,
95 * (in which case need_expand is superfluous anyway), the background color
708 /* expand background chunk. */
712 png_ptr->background.gray *= (png_uint_16)0xff;
713 png_ptr->background.red = png_ptr->background.green
714 = png_ptr->background.blue = png_ptr->background.gray;
717 png_ptr->background.gray *= (png_uint_16)0x55;
718 png_ptr->background.red = png_ptr->background.green
719 = png_ptr->background.blue = png_ptr->background.gray;
722 png_ptr->background.gray *= (png_uint_16)0x11;
723 png_ptr->background.red = png_ptr->background.green
724 = png_ptr->background.blue = png_ptr->background.gray;
728 png_ptr->background.red = png_ptr->background.green
729 = png_ptr->background.blue = png_ptr->background.gray;
735 png_ptr->background.red =
736 png_ptr->palette[png_ptr->background.index].red;
737 png_ptr->background.green =
738 png_ptr->palette[png_ptr->background.index].green;
739 png_ptr->background.blue =
740 png_ptr->palette[png_ptr->background.index].blue;
764 png_ptr->background_1 = png_ptr->background;
799 back.red = png_ptr->gamma_table[png_ptr->background.red];
800 back.green = png_ptr->gamma_table[png_ptr->background.green];
801 back.blue = png_ptr->gamma_table[png_ptr->background.blue];
803 back_1.red = png_ptr->gamma_to_1[png_ptr->background.red];
804 back_1.green = png_ptr->gamma_to_1[png_ptr->background.green];
805 back_1.blue = png_ptr->gamma_to_1[png_ptr->background.blue];
833 back.red = (png_byte)png_ptr->background.red;
834 back.green = (png_byte)png_ptr->background.green;
835 back.blue = (png_byte)png_ptr->background.blue;
840 (double)png_ptr->background.red/255, gs) * 255.0 + .5);
842 (double)png_ptr->background.green/255, gs) * 255.0 + .5);
844 (double)png_ptr->background.blue/255, gs) * 255.0 + .5);
848 (double)png_ptr->background.red/255, g) * 255.0 + .5);
850 (double)png_ptr->background.green/255, g) * 255.0 + .5);
852 (double)png_ptr->background.blue/255, g) * 255.0 + .5);
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);
917 if ((png_ptr->background.red != png_ptr->background.green) ||
918 (png_ptr->background.red != png_ptr->background.blue) ||
919 (png_ptr->background.red != png_ptr->background.gray))
921 /* RGB or RGBA with color background */
923 (double)png_ptr->background.red / m, g) * m + .5);
925 (double)png_ptr->background.green / m, g) * m + .5);
927 (double)png_ptr->background.blue / m, g) * m + .5);
928 png_ptr->background.red = (png_uint_16)(pow(
929 (double)png_ptr->background.red / m, gs) * m + .5);
930 png_ptr->background.green = (png_uint_16)(pow(
931 (double)png_ptr->background.green / m, gs) * m + .5);
932 png_ptr->background.blue = (png_uint_16)(pow(
933 (double)png_ptr->background.blue / m, gs) * m + .5);
937 /* GRAY, GRAY ALPHA, RGB, or RGBA with gray background */
940 png_ptr->background.red = png_ptr->background.green
941 = png_ptr->background.blue = png_ptr->background.gray;
976 back.red = (png_byte)png_ptr->background.red;
977 back.green = (png_byte)png_ptr->background.green;
978 back.blue = (png_byte)png_ptr->background.blue;
1068 info_ptr->background = png_ptr->background;
1243 with background "in place" if transparent,
1245 - Gray + alpha -> composite with gray background and remove alpha bytes,
1250 3 or 6 bytes and composite with background
1253 - Gray + alpha -> convert to RGB + alpha, composite with background and
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
1276 &(png_ptr->trans_values), &(png_ptr->background)
2421 back.red = png_ptr->gamma_table[png_ptr->background.red];
2422 back.green = png_ptr->gamma_table[png_ptr->background.green];
2423 back.blue = png_ptr->gamma_table[png_ptr->background.blue];
2425 back_1.red = png_ptr->gamma_to_1[png_ptr->background.red];
2426 back_1.green = png_ptr->gamma_to_1[png_ptr->background.green];
2427 back_1.blue = png_ptr->gamma_to_1[png_ptr->background.blue];
2438 back.red = png_ptr->background.red;
2439 back.green = png_ptr->background.green;
2440 back.blue = png_ptr->background.blue;
2445 (png_byte)(pow((double)png_ptr->background.red/255, g) *
2448 (png_byte)(pow((double)png_ptr->background.green/255, g) *
2451 (png_byte)(pow((double)png_ptr->background.blue/255, g) *
2458 (png_byte)(pow((double)png_ptr->background.red/255, g) *
2461 (png_byte)(pow((double)png_ptr->background.green/255, g) *
2464 (png_byte)(pow((double)png_ptr->background.blue/255, g) *
2546 back.red = (png_byte)png_ptr->background.red;
2547 back.green = (png_byte)png_ptr->background.green;
2548 back.blue = (png_byte)png_ptr->background.blue;
2577 palette[i].red = (png_byte)png_ptr->background.red;
2578 palette[i].green = (png_byte)png_ptr->background.green;
2579 palette[i].blue = (png_byte)png_ptr->background.blue;
2589 /* Replace any alpha or transparency with the supplied background color.
2590 * "background" is already in the screen gamma, while "background_1" is
2595 png_color_16p trans_values, png_color_16p background
2610 if (background != NULL &&
2633 *sp |= (png_byte)(background->gray << shift);
2658 *sp |= (png_byte)(background->gray << shift);
2688 *sp |= (png_byte)(background->gray << shift);
2714 *sp |= (png_byte)(background->gray << shift);
2744 *sp |= (png_byte)(background->gray << shift);
2767 *sp = (png_byte)background->gray;
2783 *sp = (png_byte)background->gray;
2802 /* background is already in screen gamma */
2803 *sp = (png_byte)((background->gray >> 8) & 0xff);
2804 *(sp + 1) = (png_byte)(background->gray & 0xff);
2825 *sp = (png_byte)((background->gray >> 8) & 0xff);
2826 *(sp + 1) = (png_byte)(background->gray & 0xff);
2849 *sp = (png_byte)background->red;
2850 *(sp + 1) = (png_byte)background->green;
2851 *(sp + 2) = (png_byte)background->blue;
2871 *sp = (png_byte)background->red;
2872 *(sp + 1) = (png_byte)background->green;
2873 *(sp + 2) = (png_byte)background->blue;
2892 /* background is already in screen gamma */
2893 *sp = (png_byte)((background->red >> 8) & 0xff);
2894 *(sp + 1) = (png_byte)(background->red & 0xff);
2895 *(sp + 2) = (png_byte)((background->green >> 8) & 0xff);
2896 *(sp + 3) = (png_byte)(background->green & 0xff);
2897 *(sp + 4) = (png_byte)((background->blue >> 8) & 0xff);
2898 *(sp + 5) = (png_byte)(background->blue & 0xff);
2927 *sp = (png_byte)((background->red >> 8) & 0xff);
2928 *(sp + 1) = (png_byte)(background->red & 0xff);
2929 *(sp + 2) = (png_byte)((background->green >> 8) & 0xff);
2930 *(sp + 3) = (png_byte)(background->green & 0xff);
2931 *(sp + 4) = (png_byte)((background->blue >> 8) & 0xff);
2932 *(sp + 5) = (png_byte)(background->blue & 0xff);
2959 /* background is already in screen gamma */
2960 *dp = (png_byte)background->gray;
2988 *dp = (png_byte)background->gray;
2995 *dp = (png_byte)background->gray;
3026 /* background is already in screen gamma */
3027 *dp = (png_byte)((background->gray >> 8) & 0xff);
3028 *(dp + 1) = (png_byte)(background->gray & 0xff);
3062 *dp = (png_byte)((background->gray >> 8) & 0xff);
3063 *(dp + 1) = (png_byte)(background->gray & 0xff);
3103 /* background is already in screen gamma */
3104 *dp = (png_byte)background->red;
3105 *(dp + 1) = (png_byte)background->green;
3106 *(dp + 2) = (png_byte)background->blue;
3141 *dp = (png_byte)background->red;
3142 *(dp + 1) = (png_byte)background->green;
3143 *(dp + 2) = (png_byte)background->blue;
3147 png_composite(*dp, *sp, a, background->red);
3149 background->green);
3151 background->blue);
3184 /* background is already in screen gamma */
3185 *dp = (png_byte)((background->red >> 8) & 0xff);
3186 *(dp + 1) = (png_byte)(background->red & 0xff);
3187 *(dp + 2) = (png_byte)((background->green >> 8) & 0xff);
3188 *(dp + 3) = (png_byte)(background->green & 0xff);
3189 *(dp + 4) = (png_byte)((background->blue >> 8) & 0xff);
3190 *(dp + 5) = (png_byte)(background->blue & 0xff);
3229 *dp = (png_byte)((background->red >> 8) & 0xff);
3230 *(dp + 1) = (png_byte)(background->red & 0xff);
3231 *(dp + 2) = (png_byte)((background->green >> 8) & 0xff);
3232 *(dp + 3) = (png_byte)(background->green & 0xff);
3233 *(dp + 4) = (png_byte)((background->blue >> 8) & 0xff);
3234 *(dp + 5) = (png_byte)(background->blue & 0xff);
3246 png_composite_16(v, r, a, background->red);
3249 png_composite_16(v, g, a, background->green);
3252 png_composite_16(v, b, a, background->blue);