Lines Matching refs:png_ptr
25 png_set_crc_action(png_structrp png_ptr, int crit_action, int ancil_action) in png_set_crc_action() argument
29 if (png_ptr == NULL) in png_set_crc_action()
39 png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK; in png_set_crc_action()
40 png_ptr->flags |= PNG_FLAG_CRC_CRITICAL_USE; in png_set_crc_action()
44 png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK; in png_set_crc_action()
45 png_ptr->flags |= PNG_FLAG_CRC_CRITICAL_USE | in png_set_crc_action()
50 png_warning(png_ptr, in png_set_crc_action()
57 png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK; in png_set_crc_action()
68 png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK; in png_set_crc_action()
69 png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_USE; in png_set_crc_action()
73 png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK; in png_set_crc_action()
74 png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_USE | in png_set_crc_action()
79 png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK; in png_set_crc_action()
80 png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_NOWARN; in png_set_crc_action()
87 png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK; in png_set_crc_action()
99 png_rtran_ok(png_structrp png_ptr, int need_IHDR) in png_rtran_ok() argument
101 if (png_ptr != NULL) in png_rtran_ok()
103 if ((png_ptr->flags & PNG_FLAG_ROW_INIT) != 0) in png_rtran_ok()
104 png_app_error(png_ptr, in png_rtran_ok()
107 else if (need_IHDR && (png_ptr->mode & PNG_HAVE_IHDR) == 0) in png_rtran_ok()
108 png_app_error(png_ptr, "invalid before the PNG header has been read"); in png_rtran_ok()
113 png_ptr->flags |= PNG_FLAG_DETECT_UNINITIALIZED; in png_rtran_ok()
126 png_set_background_fixed(png_structrp png_ptr, in png_set_background_fixed() argument
132 if (png_rtran_ok(png_ptr, 0) == 0 || background_color == NULL) in png_set_background_fixed()
137 png_warning(png_ptr, "Application must supply a known background gamma"); in png_set_background_fixed()
141 png_ptr->transformations |= PNG_COMPOSE | PNG_STRIP_ALPHA; in png_set_background_fixed()
142 png_ptr->transformations &= ~PNG_ENCODE_ALPHA; in png_set_background_fixed()
143 png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA; in png_set_background_fixed()
145 png_ptr->background = *background_color; in png_set_background_fixed()
146 png_ptr->background_gamma = background_gamma; in png_set_background_fixed()
147 png_ptr->background_gamma_type = (png_byte)(background_gamma_code); in png_set_background_fixed()
149 png_ptr->transformations |= PNG_BACKGROUND_EXPAND; in png_set_background_fixed()
151 png_ptr->transformations &= ~PNG_BACKGROUND_EXPAND; in png_set_background_fixed()
156 png_set_background(png_structrp png_ptr, in png_set_background() argument
160 png_set_background_fixed(png_ptr, background_color, background_gamma_code, in png_set_background()
161 need_expand, png_fixed(png_ptr, background_gamma, "png_set_background")); in png_set_background()
172 png_set_scale_16(png_structrp png_ptr) in png_set_scale_16() argument
176 if (png_rtran_ok(png_ptr, 0) == 0) in png_set_scale_16()
179 png_ptr->transformations |= PNG_SCALE_16_TO_8; in png_set_scale_16()
186 png_set_strip_16(png_structrp png_ptr) in png_set_strip_16() argument
190 if (png_rtran_ok(png_ptr, 0) == 0) in png_set_strip_16()
193 png_ptr->transformations |= PNG_16_TO_8; in png_set_strip_16()
199 png_set_strip_alpha(png_structrp png_ptr) in png_set_strip_alpha() argument
203 if (png_rtran_ok(png_ptr, 0) == 0) in png_set_strip_alpha()
206 png_ptr->transformations |= PNG_STRIP_ALPHA; in png_set_strip_alpha()
212 translate_gamma_flags(png_structrp png_ptr, png_fixed_point output_gamma, in translate_gamma_flags() argument
227 png_ptr->flags |= PNG_FLAG_ASSUME_sRGB; in translate_gamma_flags()
229 PNG_UNUSED(png_ptr) in translate_gamma_flags()
251 convert_gamma_value(png_structrp png_ptr, double output_gamma) in convert_gamma_value() argument
267 png_fixed_error(png_ptr, "gamma value"); in convert_gamma_value()
276 png_set_alpha_mode_fixed(png_structrp png_ptr, int mode, in png_set_alpha_mode_fixed() argument
284 if (png_rtran_ok(png_ptr, 0) == 0) in png_set_alpha_mode_fixed()
287 output_gamma = translate_gamma_flags(png_ptr, output_gamma, 1/*screen*/); in png_set_alpha_mode_fixed()
299 png_error(png_ptr, "output gamma out of expected range"); in png_set_alpha_mode_fixed()
326 png_ptr->transformations &= ~PNG_ENCODE_ALPHA; in png_set_alpha_mode_fixed()
327 png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA; in png_set_alpha_mode_fixed()
332 png_ptr->transformations &= ~PNG_ENCODE_ALPHA; in png_set_alpha_mode_fixed()
333 png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA; in png_set_alpha_mode_fixed()
340 png_ptr->transformations &= ~PNG_ENCODE_ALPHA; in png_set_alpha_mode_fixed()
341 png_ptr->flags |= PNG_FLAG_OPTIMIZE_ALPHA; in png_set_alpha_mode_fixed()
347 png_ptr->transformations |= PNG_ENCODE_ALPHA; in png_set_alpha_mode_fixed()
348 png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA; in png_set_alpha_mode_fixed()
352 png_error(png_ptr, "invalid alpha mode"); in png_set_alpha_mode_fixed()
359 if (png_ptr->colorspace.gamma == 0) in png_set_alpha_mode_fixed()
361 png_ptr->colorspace.gamma = file_gamma; in png_set_alpha_mode_fixed()
362 png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA; in png_set_alpha_mode_fixed()
366 png_ptr->screen_gamma = output_gamma; in png_set_alpha_mode_fixed()
374 memset(&png_ptr->background, 0, (sizeof png_ptr->background)); in png_set_alpha_mode_fixed()
375 png_ptr->background_gamma = png_ptr->colorspace.gamma; /* just in case */ in png_set_alpha_mode_fixed()
376 png_ptr->background_gamma_type = PNG_BACKGROUND_GAMMA_FILE; in png_set_alpha_mode_fixed()
377 png_ptr->transformations &= ~PNG_BACKGROUND_EXPAND; in png_set_alpha_mode_fixed()
379 if ((png_ptr->transformations & PNG_COMPOSE) != 0) in png_set_alpha_mode_fixed()
380 png_error(png_ptr, in png_set_alpha_mode_fixed()
383 png_ptr->transformations |= PNG_COMPOSE; in png_set_alpha_mode_fixed()
389 png_set_alpha_mode(png_structrp png_ptr, int mode, double output_gamma) in png_set_alpha_mode() argument
391 png_set_alpha_mode_fixed(png_ptr, mode, convert_gamma_value(png_ptr, in png_set_alpha_mode()
417 png_set_quantize(png_structrp png_ptr, png_colorp palette, in png_set_quantize() argument
423 if (png_rtran_ok(png_ptr, 0) == 0) in png_set_quantize()
426 png_ptr->transformations |= PNG_QUANTIZE; in png_set_quantize()
432 png_ptr->quantize_index = (png_bytep)png_malloc(png_ptr, in png_set_quantize()
435 png_ptr->quantize_index[i] = (png_byte)i; in png_set_quantize()
449 png_ptr->quantize_sort = (png_bytep)png_malloc(png_ptr, in png_set_quantize()
454 png_ptr->quantize_sort[i] = (png_byte)i; in png_set_quantize()
471 if (histogram[png_ptr->quantize_sort[j]] in png_set_quantize()
472 < histogram[png_ptr->quantize_sort[j + 1]]) in png_set_quantize()
476 t = png_ptr->quantize_sort[j]; in png_set_quantize()
477 png_ptr->quantize_sort[j] = png_ptr->quantize_sort[j + 1]; in png_set_quantize()
478 png_ptr->quantize_sort[j + 1] = t; in png_set_quantize()
497 if ((int)png_ptr->quantize_sort[i] >= maximum_colors) in png_set_quantize()
501 while ((int)png_ptr->quantize_sort[j] >= maximum_colors); in png_set_quantize()
517 if ((int)png_ptr->quantize_sort[i] >= maximum_colors) in png_set_quantize()
523 while ((int)png_ptr->quantize_sort[j] >= maximum_colors); in png_set_quantize()
529 png_ptr->quantize_index[j] = (png_byte)i; in png_set_quantize()
530 png_ptr->quantize_index[i] = (png_byte)j; in png_set_quantize()
537 if ((int)png_ptr->quantize_index[i] >= maximum_colors) in png_set_quantize()
542 d_index = png_ptr->quantize_index[i]; in png_set_quantize()
557 png_ptr->quantize_index[i] = (png_byte)min_k; in png_set_quantize()
561 png_free(png_ptr, png_ptr->quantize_sort); in png_set_quantize()
562 png_ptr->quantize_sort = NULL; in png_set_quantize()
583 png_ptr->index_to_palette = (png_bytep)png_malloc(png_ptr, in png_set_quantize()
586 png_ptr->palette_to_index = (png_bytep)png_malloc(png_ptr, in png_set_quantize()
593 png_ptr->index_to_palette[i] = (png_byte)i; in png_set_quantize()
594 png_ptr->palette_to_index[i] = (png_byte)i; in png_set_quantize()
597 hash = (png_dsortpp)png_calloc(png_ptr, (png_alloc_size_t)(769 * in png_set_quantize()
627 t = (png_dsortp)png_malloc_warn(png_ptr, in png_set_quantize()
652 if ((int)png_ptr->index_to_palette[p->left] in png_set_quantize()
654 (int)png_ptr->index_to_palette[p->right] in png_set_quantize()
671 palette[png_ptr->index_to_palette[j]] in png_set_quantize()
679 if (png_ptr->quantize_index[k] == in png_set_quantize()
680 png_ptr->index_to_palette[j]) in png_set_quantize()
681 png_ptr->quantize_index[k] = in png_set_quantize()
682 png_ptr->index_to_palette[next_j]; in png_set_quantize()
684 if ((int)png_ptr->quantize_index[k] == in png_set_quantize()
686 png_ptr->quantize_index[k] = in png_set_quantize()
687 png_ptr->index_to_palette[j]; in png_set_quantize()
691 png_ptr->index_to_palette[png_ptr->palette_to_index in png_set_quantize()
692 [num_new_palette]] = png_ptr->index_to_palette[j]; in png_set_quantize()
694 png_ptr->palette_to_index[png_ptr->index_to_palette[j]] in png_set_quantize()
695 = png_ptr->palette_to_index[num_new_palette]; in png_set_quantize()
697 png_ptr->index_to_palette[j] = in png_set_quantize()
700 png_ptr->palette_to_index[num_new_palette] = in png_set_quantize()
719 png_free(png_ptr, p); in png_set_quantize()
727 png_free(png_ptr, hash); in png_set_quantize()
728 png_free(png_ptr, png_ptr->palette_to_index); in png_set_quantize()
729 png_free(png_ptr, png_ptr->index_to_palette); in png_set_quantize()
730 png_ptr->palette_to_index = NULL; in png_set_quantize()
731 png_ptr->index_to_palette = NULL; in png_set_quantize()
735 if (png_ptr->palette == NULL) in png_set_quantize()
737 png_ptr->palette = palette; in png_set_quantize()
739 png_ptr->num_palette = (png_uint_16)num_palette; in png_set_quantize()
752 png_ptr->palette_lookup = (png_bytep)png_calloc(png_ptr, in png_set_quantize()
755 distance = (png_bytep)png_malloc(png_ptr, (png_alloc_size_t)(num_entries * in png_set_quantize()
793 png_ptr->palette_lookup[d_index] = (png_byte)i; in png_set_quantize()
800 png_free(png_ptr, distance); in png_set_quantize()
807 png_set_gamma_fixed(png_structrp png_ptr, png_fixed_point scrn_gamma, in png_set_gamma_fixed() argument
812 if (png_rtran_ok(png_ptr, 0) == 0) in png_set_gamma_fixed()
816 scrn_gamma = translate_gamma_flags(png_ptr, scrn_gamma, 1/*screen*/); in png_set_gamma_fixed()
817 file_gamma = translate_gamma_flags(png_ptr, file_gamma, 0/*file*/); in png_set_gamma_fixed()
831 png_error(png_ptr, "invalid file gamma in png_set_gamma"); in png_set_gamma_fixed()
834 png_error(png_ptr, "invalid screen gamma in png_set_gamma"); in png_set_gamma_fixed()
840 png_ptr->colorspace.gamma = file_gamma; in png_set_gamma_fixed()
841 png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA; in png_set_gamma_fixed()
842 png_ptr->screen_gamma = scrn_gamma; in png_set_gamma_fixed()
847 png_set_gamma(png_structrp png_ptr, double scrn_gamma, double file_gamma) in png_set_gamma() argument
849 png_set_gamma_fixed(png_ptr, convert_gamma_value(png_ptr, scrn_gamma), in png_set_gamma()
850 convert_gamma_value(png_ptr, file_gamma)); in png_set_gamma()
861 png_set_expand(png_structrp png_ptr) in png_set_expand() argument
865 if (png_rtran_ok(png_ptr, 0) == 0) in png_set_expand()
868 png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS); in png_set_expand()
891 png_set_palette_to_rgb(png_structrp png_ptr) in png_set_palette_to_rgb() argument
895 if (png_rtran_ok(png_ptr, 0) == 0) in png_set_palette_to_rgb()
898 png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS); in png_set_palette_to_rgb()
903 png_set_expand_gray_1_2_4_to_8(png_structrp png_ptr) in png_set_expand_gray_1_2_4_to_8() argument
907 if (png_rtran_ok(png_ptr, 0) == 0) in png_set_expand_gray_1_2_4_to_8()
910 png_ptr->transformations |= PNG_EXPAND; in png_set_expand_gray_1_2_4_to_8()
915 png_set_tRNS_to_alpha(png_structrp png_ptr) in png_set_tRNS_to_alpha() argument
919 if (png_rtran_ok(png_ptr, 0) == 0) in png_set_tRNS_to_alpha()
922 png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS); in png_set_tRNS_to_alpha()
931 png_set_expand_16(png_structrp png_ptr) in png_set_expand_16() argument
935 if (png_rtran_ok(png_ptr, 0) == 0) in png_set_expand_16()
938 png_ptr->transformations |= (PNG_EXPAND_16 | PNG_EXPAND | PNG_EXPAND_tRNS); in png_set_expand_16()
944 png_set_gray_to_rgb(png_structrp png_ptr) in png_set_gray_to_rgb() argument
948 if (png_rtran_ok(png_ptr, 0) == 0) in png_set_gray_to_rgb()
952 png_set_expand_gray_1_2_4_to_8(png_ptr); in png_set_gray_to_rgb()
953 png_ptr->transformations |= PNG_GRAY_TO_RGB; in png_set_gray_to_rgb()
959 png_set_rgb_to_gray_fixed(png_structrp png_ptr, int error_action, in png_set_rgb_to_gray_fixed() argument
966 if (png_rtran_ok(png_ptr, 1) == 0) in png_set_rgb_to_gray_fixed()
972 png_ptr->transformations |= PNG_RGB_TO_GRAY; in png_set_rgb_to_gray_fixed()
976 png_ptr->transformations |= PNG_RGB_TO_GRAY_WARN; in png_set_rgb_to_gray_fixed()
980 png_ptr->transformations |= PNG_RGB_TO_GRAY_ERR; in png_set_rgb_to_gray_fixed()
984 png_error(png_ptr, "invalid error action to rgb_to_gray"); in png_set_rgb_to_gray_fixed()
987 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_set_rgb_to_gray_fixed()
989 png_ptr->transformations |= PNG_EXPAND; in png_set_rgb_to_gray_fixed()
995 png_error(png_ptr, in png_set_rgb_to_gray_fixed()
1014 png_ptr->rgb_to_gray_red_coeff = red_int; in png_set_rgb_to_gray_fixed()
1015 png_ptr->rgb_to_gray_green_coeff = green_int; in png_set_rgb_to_gray_fixed()
1016 png_ptr->rgb_to_gray_coefficients_set = 1; in png_set_rgb_to_gray_fixed()
1022 png_app_warning(png_ptr, in png_set_rgb_to_gray_fixed()
1031 if (png_ptr->rgb_to_gray_red_coeff == 0 && in png_set_rgb_to_gray_fixed()
1032 png_ptr->rgb_to_gray_green_coeff == 0) in png_set_rgb_to_gray_fixed()
1034 png_ptr->rgb_to_gray_red_coeff = 6968; in png_set_rgb_to_gray_fixed()
1035 png_ptr->rgb_to_gray_green_coeff = 23434; in png_set_rgb_to_gray_fixed()
1048 png_set_rgb_to_gray(png_structrp png_ptr, int error_action, double red, in png_set_rgb_to_gray() argument
1051 png_set_rgb_to_gray_fixed(png_ptr, error_action, in png_set_rgb_to_gray()
1052 png_fixed(png_ptr, red, "rgb to gray red coefficient"), in png_set_rgb_to_gray()
1053 png_fixed(png_ptr, green, "rgb to gray green coefficient")); in png_set_rgb_to_gray()
1062 png_set_read_user_transform_fn(png_structrp png_ptr, png_user_transform_ptr in png_set_read_user_transform_fn() argument
1068 png_ptr->transformations |= PNG_USER_TRANSFORM; in png_set_read_user_transform_fn()
1069 png_ptr->read_user_transform_fn = read_user_transform_fn; in png_set_read_user_transform_fn()
1106 png_init_palette_transformations(png_structrp png_ptr) in png_init_palette_transformations() argument
1119 if (png_ptr->num_trans > 0) in png_init_palette_transformations()
1124 for (i=0; i<png_ptr->num_trans; ++i) in png_init_palette_transformations()
1126 if (png_ptr->trans_alpha[i] == 255) in png_init_palette_transformations()
1128 else if (png_ptr->trans_alpha[i] == 0) in png_init_palette_transformations()
1146 png_ptr->transformations &= ~PNG_ENCODE_ALPHA; in png_init_palette_transformations()
1147 png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA; in png_init_palette_transformations()
1150 png_ptr->transformations &= ~(PNG_COMPOSE | PNG_BACKGROUND_EXPAND); in png_init_palette_transformations()
1162 if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) != 0 && in png_init_palette_transformations()
1163 (png_ptr->transformations & PNG_EXPAND) != 0) in png_init_palette_transformations()
1166 png_ptr->background.red = in png_init_palette_transformations()
1167 png_ptr->palette[png_ptr->background.index].red; in png_init_palette_transformations()
1168 png_ptr->background.green = in png_init_palette_transformations()
1169 png_ptr->palette[png_ptr->background.index].green; in png_init_palette_transformations()
1170 png_ptr->background.blue = in png_init_palette_transformations()
1171 png_ptr->palette[png_ptr->background.index].blue; in png_init_palette_transformations()
1174 if ((png_ptr->transformations & PNG_INVERT_ALPHA) != 0) in png_init_palette_transformations()
1176 if ((png_ptr->transformations & PNG_EXPAND_tRNS) == 0) in png_init_palette_transformations()
1181 int i, istop = png_ptr->num_trans; in png_init_palette_transformations()
1184 png_ptr->trans_alpha[i] = (png_byte)(255 - in png_init_palette_transformations()
1185 png_ptr->trans_alpha[i]); in png_init_palette_transformations()
1195 png_init_rgb_transformations(png_structrp png_ptr) in png_init_rgb_transformations() argument
1201 int input_has_alpha = (png_ptr->color_type & PNG_COLOR_MASK_ALPHA) != 0; in png_init_rgb_transformations()
1202 int input_has_transparency = png_ptr->num_trans > 0; in png_init_rgb_transformations()
1212 png_ptr->transformations &= ~PNG_ENCODE_ALPHA; in png_init_rgb_transformations()
1213 png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA; in png_init_rgb_transformations()
1217 png_ptr->transformations &= ~(PNG_COMPOSE | PNG_BACKGROUND_EXPAND); in png_init_rgb_transformations()
1229 if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) != 0 && in png_init_rgb_transformations()
1230 (png_ptr->transformations & PNG_EXPAND) != 0 && in png_init_rgb_transformations()
1231 (png_ptr->color_type & PNG_COLOR_MASK_COLOR) == 0) in png_init_rgb_transformations()
1236 int gray = png_ptr->background.gray; in png_init_rgb_transformations()
1237 int trans_gray = png_ptr->trans_color.gray; in png_init_rgb_transformations()
1239 switch (png_ptr->bit_depth) in png_init_rgb_transformations()
1266 png_ptr->background.red = png_ptr->background.green = in png_init_rgb_transformations()
1267 png_ptr->background.blue = (png_uint_16)gray; in png_init_rgb_transformations()
1269 if ((png_ptr->transformations & PNG_EXPAND_tRNS) == 0) in png_init_rgb_transformations()
1271 png_ptr->trans_color.red = png_ptr->trans_color.green = in png_init_rgb_transformations()
1272 png_ptr->trans_color.blue = (png_uint_16)trans_gray; in png_init_rgb_transformations()
1280 png_init_read_transformations(png_structrp png_ptr) in png_init_read_transformations() argument
1305 if (png_ptr->colorspace.gamma != 0) /* has been set */ in png_init_read_transformations()
1307 if (png_ptr->screen_gamma != 0) /* screen set too */ in png_init_read_transformations()
1308 gamma_correction = png_gamma_threshold(png_ptr->colorspace.gamma, in png_init_read_transformations()
1309 png_ptr->screen_gamma); in png_init_read_transformations()
1315 png_ptr->screen_gamma = png_reciprocal(png_ptr->colorspace.gamma); in png_init_read_transformations()
1318 else if (png_ptr->screen_gamma != 0) in png_init_read_transformations()
1324 png_ptr->colorspace.gamma = png_reciprocal(png_ptr->screen_gamma); in png_init_read_transformations()
1332 png_ptr->screen_gamma = png_ptr->colorspace.gamma = PNG_FP_1; in png_init_read_transformations()
1335 png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA; in png_init_read_transformations()
1346 png_ptr->transformations |= PNG_GAMMA; in png_init_read_transformations()
1349 png_ptr->transformations &= ~PNG_GAMMA; in png_init_read_transformations()
1383 if ((png_ptr->transformations & PNG_STRIP_ALPHA) != 0 && in png_init_read_transformations()
1384 (png_ptr->transformations & PNG_COMPOSE) == 0) in png_init_read_transformations()
1391 png_ptr->transformations &= ~(PNG_BACKGROUND_EXPAND | PNG_ENCODE_ALPHA | in png_init_read_transformations()
1393 png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA; in png_init_read_transformations()
1402 png_ptr->num_trans = 0; in png_init_read_transformations()
1410 if (png_gamma_significant(png_ptr->screen_gamma) == 0) in png_init_read_transformations()
1412 png_ptr->transformations &= ~PNG_ENCODE_ALPHA; in png_init_read_transformations()
1413 png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA; in png_init_read_transformations()
1421 if ((png_ptr->transformations & PNG_RGB_TO_GRAY) != 0) in png_init_read_transformations()
1422 png_colorspace_set_rgb_coefficients(png_ptr); in png_init_read_transformations()
1442 if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) != 0) in png_init_read_transformations()
1447 if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) == 0) in png_init_read_transformations()
1448 png_ptr->mode |= PNG_BACKGROUND_IS_GRAY; in png_init_read_transformations()
1451 else if ((png_ptr->transformations & PNG_COMPOSE) != 0) in png_init_read_transformations()
1458 if ((png_ptr->transformations & PNG_GRAY_TO_RGB) != 0) in png_init_read_transformations()
1460 if (png_ptr->background.red == png_ptr->background.green && in png_init_read_transformations()
1461 png_ptr->background.red == png_ptr->background.blue) in png_init_read_transformations()
1463 png_ptr->mode |= PNG_BACKGROUND_IS_GRAY; in png_init_read_transformations()
1464 png_ptr->background.gray = png_ptr->background.red; in png_init_read_transformations()
1482 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) in png_init_read_transformations()
1483 png_init_palette_transformations(png_ptr); in png_init_read_transformations()
1486 png_init_rgb_transformations(png_ptr); in png_init_read_transformations()
1490 if ((png_ptr->transformations & PNG_EXPAND_16) != 0 && in png_init_read_transformations()
1491 (png_ptr->transformations & PNG_COMPOSE) != 0 && in png_init_read_transformations()
1492 (png_ptr->transformations & PNG_BACKGROUND_EXPAND) == 0 && in png_init_read_transformations()
1493 png_ptr->bit_depth != 16) in png_init_read_transformations()
1506 CHOP(png_ptr->background.red); in png_init_read_transformations()
1507 CHOP(png_ptr->background.green); in png_init_read_transformations()
1508 CHOP(png_ptr->background.blue); in png_init_read_transformations()
1509 CHOP(png_ptr->background.gray); in png_init_read_transformations()
1517 if ((png_ptr->transformations & (PNG_16_TO_8|PNG_SCALE_16_TO_8)) != 0 && in png_init_read_transformations()
1518 (png_ptr->transformations & PNG_COMPOSE) != 0 && in png_init_read_transformations()
1519 (png_ptr->transformations & PNG_BACKGROUND_EXPAND) == 0 && in png_init_read_transformations()
1520 png_ptr->bit_depth == 16) in png_init_read_transformations()
1528 png_ptr->background.red = (png_uint_16)(png_ptr->background.red * 257); in png_init_read_transformations()
1529 png_ptr->background.green = in png_init_read_transformations()
1530 (png_uint_16)(png_ptr->background.green * 257); in png_init_read_transformations()
1531 png_ptr->background.blue = (png_uint_16)(png_ptr->background.blue * 257); in png_init_read_transformations()
1532 png_ptr->background.gray = (png_uint_16)(png_ptr->background.gray * 257); in png_init_read_transformations()
1547 png_ptr->background_1 = png_ptr->background; in png_init_read_transformations()
1563 if ((png_ptr->transformations & PNG_GAMMA) != 0 || in png_init_read_transformations()
1564 ((png_ptr->transformations & PNG_RGB_TO_GRAY) != 0 && in png_init_read_transformations()
1565 (png_gamma_significant(png_ptr->colorspace.gamma) != 0 || in png_init_read_transformations()
1566 png_gamma_significant(png_ptr->screen_gamma) != 0)) || in png_init_read_transformations()
1567 ((png_ptr->transformations & PNG_COMPOSE) != 0 && in png_init_read_transformations()
1568 (png_gamma_significant(png_ptr->colorspace.gamma) != 0 || in png_init_read_transformations()
1569 png_gamma_significant(png_ptr->screen_gamma) != 0 in png_init_read_transformations()
1571 || (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_UNIQUE && in png_init_read_transformations()
1572 png_gamma_significant(png_ptr->background_gamma) != 0) in png_init_read_transformations()
1574 )) || ((png_ptr->transformations & PNG_ENCODE_ALPHA) != 0 && in png_init_read_transformations()
1575 png_gamma_significant(png_ptr->screen_gamma) != 0)) in png_init_read_transformations()
1577 png_build_gamma_table(png_ptr, png_ptr->bit_depth); in png_init_read_transformations()
1580 if ((png_ptr->transformations & PNG_COMPOSE) != 0) in png_init_read_transformations()
1588 if ((png_ptr->transformations & PNG_RGB_TO_GRAY) != 0) in png_init_read_transformations()
1589 png_warning(png_ptr, in png_init_read_transformations()
1592 if ((png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) != 0) in png_init_read_transformations()
1598 png_colorp palette = png_ptr->palette; in png_init_read_transformations()
1599 int num_palette = png_ptr->num_palette; in png_init_read_transformations()
1601 if (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_FILE) in png_init_read_transformations()
1604 back.red = png_ptr->gamma_table[png_ptr->background.red]; in png_init_read_transformations()
1605 back.green = png_ptr->gamma_table[png_ptr->background.green]; in png_init_read_transformations()
1606 back.blue = png_ptr->gamma_table[png_ptr->background.blue]; in png_init_read_transformations()
1608 back_1.red = png_ptr->gamma_to_1[png_ptr->background.red]; in png_init_read_transformations()
1609 back_1.green = png_ptr->gamma_to_1[png_ptr->background.green]; in png_init_read_transformations()
1610 back_1.blue = png_ptr->gamma_to_1[png_ptr->background.blue]; in png_init_read_transformations()
1616 switch (png_ptr->background_gamma_type) in png_init_read_transformations()
1619 g = (png_ptr->screen_gamma); in png_init_read_transformations()
1624 g = png_reciprocal(png_ptr->colorspace.gamma); in png_init_read_transformations()
1625 gs = png_reciprocal2(png_ptr->colorspace.gamma, in png_init_read_transformations()
1626 png_ptr->screen_gamma); in png_init_read_transformations()
1630 g = png_reciprocal(png_ptr->background_gamma); in png_init_read_transformations()
1631 gs = png_reciprocal2(png_ptr->background_gamma, in png_init_read_transformations()
1632 png_ptr->screen_gamma); in png_init_read_transformations()
1642 back.red = png_gamma_8bit_correct(png_ptr->background.red, in png_init_read_transformations()
1644 back.green = png_gamma_8bit_correct(png_ptr->background.green, in png_init_read_transformations()
1646 back.blue = png_gamma_8bit_correct(png_ptr->background.blue, in png_init_read_transformations()
1652 back.red = (png_byte)png_ptr->background.red; in png_init_read_transformations()
1653 back.green = (png_byte)png_ptr->background.green; in png_init_read_transformations()
1654 back.blue = (png_byte)png_ptr->background.blue; in png_init_read_transformations()
1659 back_1.red = png_gamma_8bit_correct(png_ptr->background.red, in png_init_read_transformations()
1662 png_ptr->background.green, g); in png_init_read_transformations()
1663 back_1.blue = png_gamma_8bit_correct(png_ptr->background.blue, in png_init_read_transformations()
1669 back_1.red = (png_byte)png_ptr->background.red; in png_init_read_transformations()
1670 back_1.green = (png_byte)png_ptr->background.green; in png_init_read_transformations()
1671 back_1.blue = (png_byte)png_ptr->background.blue; in png_init_read_transformations()
1677 if (i < (int)png_ptr->num_trans && in png_init_read_transformations()
1678 png_ptr->trans_alpha[i] != 0xff) in png_init_read_transformations()
1680 if (png_ptr->trans_alpha[i] == 0) in png_init_read_transformations()
1688 v = png_ptr->gamma_to_1[palette[i].red]; in png_init_read_transformations()
1689 png_composite(w, v, png_ptr->trans_alpha[i], back_1.red); in png_init_read_transformations()
1690 palette[i].red = png_ptr->gamma_from_1[w]; in png_init_read_transformations()
1692 v = png_ptr->gamma_to_1[palette[i].green]; in png_init_read_transformations()
1693 png_composite(w, v, png_ptr->trans_alpha[i], back_1.green); in png_init_read_transformations()
1694 palette[i].green = png_ptr->gamma_from_1[w]; in png_init_read_transformations()
1696 v = png_ptr->gamma_to_1[palette[i].blue]; in png_init_read_transformations()
1697 png_composite(w, v, png_ptr->trans_alpha[i], back_1.blue); in png_init_read_transformations()
1698 palette[i].blue = png_ptr->gamma_from_1[w]; in png_init_read_transformations()
1703 palette[i].red = png_ptr->gamma_table[palette[i].red]; in png_init_read_transformations()
1704 palette[i].green = png_ptr->gamma_table[palette[i].green]; in png_init_read_transformations()
1705 palette[i].blue = png_ptr->gamma_table[palette[i].blue]; in png_init_read_transformations()
1715 png_ptr->transformations &= ~(PNG_COMPOSE | PNG_GAMMA); in png_init_read_transformations()
1725 switch (png_ptr->background_gamma_type) in png_init_read_transformations()
1728 g = png_ptr->screen_gamma; in png_init_read_transformations()
1733 g = png_reciprocal(png_ptr->colorspace.gamma); in png_init_read_transformations()
1734 gs = png_reciprocal2(png_ptr->colorspace.gamma, in png_init_read_transformations()
1735 png_ptr->screen_gamma); in png_init_read_transformations()
1739 g = png_reciprocal(png_ptr->background_gamma); in png_init_read_transformations()
1740 gs = png_reciprocal2(png_ptr->background_gamma, in png_init_read_transformations()
1741 png_ptr->screen_gamma); in png_init_read_transformations()
1745 png_error(png_ptr, "invalid background gamma type"); in png_init_read_transformations()
1752 png_ptr->background_1.gray = png_gamma_correct(png_ptr, in png_init_read_transformations()
1753 png_ptr->background.gray, g); in png_init_read_transformations()
1756 png_ptr->background.gray = png_gamma_correct(png_ptr, in png_init_read_transformations()
1757 png_ptr->background.gray, gs); in png_init_read_transformations()
1759 if ((png_ptr->background.red != png_ptr->background.green) || in png_init_read_transformations()
1760 (png_ptr->background.red != png_ptr->background.blue) || in png_init_read_transformations()
1761 (png_ptr->background.red != png_ptr->background.gray)) in png_init_read_transformations()
1766 png_ptr->background_1.red = png_gamma_correct(png_ptr, in png_init_read_transformations()
1767 png_ptr->background.red, g); in png_init_read_transformations()
1769 png_ptr->background_1.green = png_gamma_correct(png_ptr, in png_init_read_transformations()
1770 png_ptr->background.green, g); in png_init_read_transformations()
1772 png_ptr->background_1.blue = png_gamma_correct(png_ptr, in png_init_read_transformations()
1773 png_ptr->background.blue, g); in png_init_read_transformations()
1778 png_ptr->background.red = png_gamma_correct(png_ptr, in png_init_read_transformations()
1779 png_ptr->background.red, gs); in png_init_read_transformations()
1781 png_ptr->background.green = png_gamma_correct(png_ptr, in png_init_read_transformations()
1782 png_ptr->background.green, gs); in png_init_read_transformations()
1784 png_ptr->background.blue = png_gamma_correct(png_ptr, in png_init_read_transformations()
1785 png_ptr->background.blue, gs); in png_init_read_transformations()
1792 png_ptr->background_1.red = png_ptr->background_1.green in png_init_read_transformations()
1793 = png_ptr->background_1.blue = png_ptr->background_1.gray; in png_init_read_transformations()
1795 png_ptr->background.red = png_ptr->background.green in png_init_read_transformations()
1796 = png_ptr->background.blue = png_ptr->background.gray; in png_init_read_transformations()
1800 png_ptr->background_gamma_type = PNG_BACKGROUND_GAMMA_SCREEN; in png_init_read_transformations()
1807 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE in png_init_read_transformations()
1810 && ((png_ptr->transformations & PNG_EXPAND) == 0 || in png_init_read_transformations()
1811 (png_ptr->transformations & PNG_RGB_TO_GRAY) == 0) in png_init_read_transformations()
1815 png_colorp palette = png_ptr->palette; in png_init_read_transformations()
1816 int num_palette = png_ptr->num_palette; in png_init_read_transformations()
1824 palette[i].red = png_ptr->gamma_table[palette[i].red]; in png_init_read_transformations()
1825 palette[i].green = png_ptr->gamma_table[palette[i].green]; in png_init_read_transformations()
1826 palette[i].blue = png_ptr->gamma_table[palette[i].blue]; in png_init_read_transformations()
1830 png_ptr->transformations &= ~PNG_GAMMA; in png_init_read_transformations()
1840 if ((png_ptr->transformations & PNG_COMPOSE) != 0 && in png_init_read_transformations()
1841 (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)) in png_init_read_transformations()
1844 int istop = (int)png_ptr->num_trans; in png_init_read_transformations()
1846 png_colorp palette = png_ptr->palette; in png_init_read_transformations()
1848 back.red = (png_byte)png_ptr->background.red; in png_init_read_transformations()
1849 back.green = (png_byte)png_ptr->background.green; in png_init_read_transformations()
1850 back.blue = (png_byte)png_ptr->background.blue; in png_init_read_transformations()
1854 if (png_ptr->trans_alpha[i] == 0) in png_init_read_transformations()
1859 else if (png_ptr->trans_alpha[i] != 0xff) in png_init_read_transformations()
1863 png_ptr->trans_alpha[i], back.red); in png_init_read_transformations()
1866 png_ptr->trans_alpha[i], back.green); in png_init_read_transformations()
1869 png_ptr->trans_alpha[i], back.blue); in png_init_read_transformations()
1873 png_ptr->transformations &= ~PNG_COMPOSE; in png_init_read_transformations()
1878 if ((png_ptr->transformations & PNG_SHIFT) != 0 && in png_init_read_transformations()
1879 (png_ptr->transformations & PNG_EXPAND) == 0 && in png_init_read_transformations()
1880 (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)) in png_init_read_transformations()
1883 int istop = png_ptr->num_palette; in png_init_read_transformations()
1884 int shift = 8 - png_ptr->sig_bit.red; in png_init_read_transformations()
1886 png_ptr->transformations &= ~PNG_SHIFT; in png_init_read_transformations()
1895 int component = png_ptr->palette[i].red; in png_init_read_transformations()
1898 png_ptr->palette[i].red = (png_byte)component; in png_init_read_transformations()
1901 shift = 8 - png_ptr->sig_bit.green; in png_init_read_transformations()
1905 int component = png_ptr->palette[i].green; in png_init_read_transformations()
1908 png_ptr->palette[i].green = (png_byte)component; in png_init_read_transformations()
1911 shift = 8 - png_ptr->sig_bit.blue; in png_init_read_transformations()
1915 int component = png_ptr->palette[i].blue; in png_init_read_transformations()
1918 png_ptr->palette[i].blue = (png_byte)component; in png_init_read_transformations()
1929 png_read_transform_info(png_structrp png_ptr, png_inforp info_ptr) in png_read_transform_info() argument
1934 if ((png_ptr->transformations & PNG_EXPAND) != 0) in png_read_transform_info()
1942 if (png_ptr->num_trans > 0) in png_read_transform_info()
1951 if (png_ptr->palette == NULL) in png_read_transform_info()
1952 png_error (png_ptr, "Palette is NULL in indexed image"); in png_read_transform_info()
1956 if (png_ptr->num_trans != 0) in png_read_transform_info()
1958 if ((png_ptr->transformations & PNG_EXPAND_tRNS) != 0) in png_read_transform_info()
1974 if ((png_ptr->transformations & PNG_COMPOSE) != 0) in png_read_transform_info()
1975 info_ptr->background = png_ptr->background; in png_read_transform_info()
1988 info_ptr->colorspace.gamma = png_ptr->colorspace.gamma; in png_read_transform_info()
1995 if ((png_ptr->transformations & PNG_SCALE_16_TO_8) != 0) in png_read_transform_info()
2000 if ((png_ptr->transformations & PNG_16_TO_8) != 0) in png_read_transform_info()
2014 png_ptr->transformations |= PNG_16_TO_8; in png_read_transform_info()
2019 png_ptr->transformations |= PNG_SCALE_16_TO_8; in png_read_transform_info()
2030 if ((png_ptr->transformations & PNG_GRAY_TO_RGB) != 0) in png_read_transform_info()
2036 if ((png_ptr->transformations & PNG_RGB_TO_GRAY) != 0) in png_read_transform_info()
2042 if ((png_ptr->transformations & PNG_QUANTIZE) != 0) in png_read_transform_info()
2046 png_ptr->palette_lookup != 0 && info_ptr->bit_depth == 8) in png_read_transform_info()
2054 if ((png_ptr->transformations & PNG_EXPAND_16) != 0 && in png_read_transform_info()
2063 if ((png_ptr->transformations & PNG_PACK) != 0 && in png_read_transform_info()
2078 if ((png_ptr->transformations & PNG_STRIP_ALPHA) != 0) in png_read_transform_info()
2091 if ((png_ptr->transformations & PNG_FILLER) != 0 && in png_read_transform_info()
2097 if ((png_ptr->transformations & PNG_ADD_ALPHA) != 0) in png_read_transform_info()
2104 if ((png_ptr->transformations & PNG_USER_TRANSFORM) != 0) in png_read_transform_info()
2106 if (png_ptr->user_transform_depth != 0) in png_read_transform_info()
2107 info_ptr->bit_depth = png_ptr->user_transform_depth; in png_read_transform_info()
2109 if (png_ptr->user_transform_channels != 0) in png_read_transform_info()
2110 info_ptr->channels = png_ptr->user_transform_channels; in png_read_transform_info()
2125 png_ptr->info_rowbytes = info_ptr->rowbytes; in png_read_transform_info()
2128 if (png_ptr != NULL) in png_read_transform_info()
2989 png_do_rgb_to_gray(png_structrp png_ptr, png_row_infop row_info, png_bytep row) in png_do_rgb_to_gray() argument
2999 PNG_CONST png_uint_32 rc = png_ptr->rgb_to_gray_red_coeff; in png_do_rgb_to_gray()
3000 PNG_CONST png_uint_32 gc = png_ptr->rgb_to_gray_green_coeff; in png_do_rgb_to_gray()
3014 if (png_ptr->gamma_from_1 != NULL && png_ptr->gamma_to_1 != NULL) in png_do_rgb_to_gray()
3028 red = png_ptr->gamma_to_1[red]; in png_do_rgb_to_gray()
3029 green = png_ptr->gamma_to_1[green]; in png_do_rgb_to_gray()
3030 blue = png_ptr->gamma_to_1[blue]; in png_do_rgb_to_gray()
3033 *(dp++) = png_ptr->gamma_from_1[ in png_do_rgb_to_gray()
3042 if (png_ptr->gamma_table != NULL) in png_do_rgb_to_gray()
3043 red = png_ptr->gamma_table[red]; in png_do_rgb_to_gray()
3086 if (png_ptr->gamma_16_to_1 != NULL && png_ptr->gamma_16_from_1 != NULL) in png_do_rgb_to_gray()
3103 if (png_ptr->gamma_16_table != NULL) in png_do_rgb_to_gray()
3104 w = png_ptr->gamma_16_table[(red & 0xff) in png_do_rgb_to_gray()
3105 >> png_ptr->gamma_shift][red >> 8]; in png_do_rgb_to_gray()
3113 png_uint_16 red_1 = png_ptr->gamma_16_to_1[(red & 0xff) in png_do_rgb_to_gray()
3114 >> png_ptr->gamma_shift][red>>8]; in png_do_rgb_to_gray()
3116 png_ptr->gamma_16_to_1[(green & 0xff) >> in png_do_rgb_to_gray()
3117 png_ptr->gamma_shift][green>>8]; in png_do_rgb_to_gray()
3118 png_uint_16 blue_1 = png_ptr->gamma_16_to_1[(blue & 0xff) in png_do_rgb_to_gray()
3119 >> png_ptr->gamma_shift][blue>>8]; in png_do_rgb_to_gray()
3122 w = png_ptr->gamma_16_from_1[(gray16 & 0xff) >> in png_do_rgb_to_gray()
3123 png_ptr->gamma_shift][gray16 >> 8]; in png_do_rgb_to_gray()
3192 png_do_compose(png_row_infop row_info, png_bytep row, png_structrp png_ptr) in png_do_compose() argument
3195 png_const_bytep gamma_table = png_ptr->gamma_table; in png_do_compose()
3196 png_const_bytep gamma_from_1 = png_ptr->gamma_from_1; in png_do_compose()
3197 png_const_bytep gamma_to_1 = png_ptr->gamma_to_1; in png_do_compose()
3198 png_const_uint_16pp gamma_16 = png_ptr->gamma_16_table; in png_do_compose()
3199 png_const_uint_16pp gamma_16_from_1 = png_ptr->gamma_16_from_1; in png_do_compose()
3200 png_const_uint_16pp gamma_16_to_1 = png_ptr->gamma_16_to_1; in png_do_compose()
3201 int gamma_shift = png_ptr->gamma_shift; in png_do_compose()
3202 int optimize = (png_ptr->flags & PNG_FLAG_OPTIMIZE_ALPHA) != 0; in png_do_compose()
3226 == png_ptr->trans_color.gray) in png_do_compose()
3230 (unsigned int)(png_ptr->background.gray << shift); in png_do_compose()
3256 == png_ptr->trans_color.gray) in png_do_compose()
3260 (unsigned int)png_ptr->background.gray << shift; in png_do_compose()
3293 == png_ptr->trans_color.gray) in png_do_compose()
3297 (unsigned int)png_ptr->background.gray << shift; in png_do_compose()
3324 == png_ptr->trans_color.gray) in png_do_compose()
3328 (unsigned int)(png_ptr->background.gray << shift); in png_do_compose()
3361 == png_ptr->trans_color.gray) in png_do_compose()
3365 (unsigned int)(png_ptr->background.gray << shift); in png_do_compose()
3390 if (*sp == png_ptr->trans_color.gray) in png_do_compose()
3391 *sp = (png_byte)png_ptr->background.gray; in png_do_compose()
3403 if (*sp == png_ptr->trans_color.gray) in png_do_compose()
3404 *sp = (png_byte)png_ptr->background.gray; in png_do_compose()
3422 if (v == png_ptr->trans_color.gray) in png_do_compose()
3425 *sp = (png_byte)((png_ptr->background.gray >> 8) in png_do_compose()
3427 *(sp + 1) = (png_byte)(png_ptr->background.gray in png_do_compose()
3449 if (v == png_ptr->trans_color.gray) in png_do_compose()
3451 *sp = (png_byte)((png_ptr->background.gray >> 8) in png_do_compose()
3453 *(sp + 1) = (png_byte)(png_ptr->background.gray in png_do_compose()
3477 if (*sp == png_ptr->trans_color.red && in png_do_compose()
3478 *(sp + 1) == png_ptr->trans_color.green && in png_do_compose()
3479 *(sp + 2) == png_ptr->trans_color.blue) in png_do_compose()
3481 *sp = (png_byte)png_ptr->background.red; in png_do_compose()
3482 *(sp + 1) = (png_byte)png_ptr->background.green; in png_do_compose()
3483 *(sp + 2) = (png_byte)png_ptr->background.blue; in png_do_compose()
3500 if (*sp == png_ptr->trans_color.red && in png_do_compose()
3501 *(sp + 1) == png_ptr->trans_color.green && in png_do_compose()
3502 *(sp + 2) == png_ptr->trans_color.blue) in png_do_compose()
3504 *sp = (png_byte)png_ptr->background.red; in png_do_compose()
3505 *(sp + 1) = (png_byte)png_ptr->background.green; in png_do_compose()
3506 *(sp + 2) = (png_byte)png_ptr->background.blue; in png_do_compose()
3527 if (r == png_ptr->trans_color.red && in png_do_compose()
3528 g == png_ptr->trans_color.green && in png_do_compose()
3529 b == png_ptr->trans_color.blue) in png_do_compose()
3532 *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff); in png_do_compose()
3533 *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff); in png_do_compose()
3534 *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) in png_do_compose()
3536 *(sp + 3) = (png_byte)(png_ptr->background.green in png_do_compose()
3538 *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) in png_do_compose()
3540 *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff); in png_do_compose()
3574 if (r == png_ptr->trans_color.red && in png_do_compose()
3575 g == png_ptr->trans_color.green && in png_do_compose()
3576 b == png_ptr->trans_color.blue) in png_do_compose()
3578 *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff); in png_do_compose()
3579 *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff); in png_do_compose()
3580 *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) in png_do_compose()
3582 *(sp + 3) = (png_byte)(png_ptr->background.green in png_do_compose()
3584 *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) in png_do_compose()
3586 *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff); in png_do_compose()
3613 *sp = (png_byte)png_ptr->background.gray; in png_do_compose()
3621 png_composite(w, v, a, png_ptr->background_1.gray); in png_do_compose()
3637 *sp = (png_byte)png_ptr->background.gray; in png_do_compose()
3640 png_composite(*sp, *sp, a, png_ptr->background.gray); in png_do_compose()
3668 *sp = (png_byte)((png_ptr->background.gray >> 8) in png_do_compose()
3670 *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff); in png_do_compose()
3678 png_composite_16(v, g, a, png_ptr->background_1.gray); in png_do_compose()
3700 *sp = (png_byte)((png_ptr->background.gray >> 8) in png_do_compose()
3702 *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff); in png_do_compose()
3710 png_composite_16(v, g, a, png_ptr->background.gray); in png_do_compose()
3743 *sp = (png_byte)png_ptr->background.red; in png_do_compose()
3744 *(sp + 1) = (png_byte)png_ptr->background.green; in png_do_compose()
3745 *(sp + 2) = (png_byte)png_ptr->background.blue; in png_do_compose()
3753 png_composite(w, v, a, png_ptr->background_1.red); in png_do_compose()
3758 png_composite(w, v, a, png_ptr->background_1.green); in png_do_compose()
3763 png_composite(w, v, a, png_ptr->background_1.blue); in png_do_compose()
3779 *sp = (png_byte)png_ptr->background.red; in png_do_compose()
3780 *(sp + 1) = (png_byte)png_ptr->background.green; in png_do_compose()
3781 *(sp + 2) = (png_byte)png_ptr->background.blue; in png_do_compose()
3786 png_composite(*sp, *sp, a, png_ptr->background.red); in png_do_compose()
3789 png_ptr->background.green); in png_do_compose()
3792 png_ptr->background.blue); in png_do_compose()
3829 *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff); in png_do_compose()
3830 *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff); in png_do_compose()
3831 *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) in png_do_compose()
3833 *(sp + 3) = (png_byte)(png_ptr->background.green in png_do_compose()
3835 *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) in png_do_compose()
3837 *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff); in png_do_compose()
3845 png_composite_16(w, v, a, png_ptr->background_1.red); in png_do_compose()
3853 png_composite_16(w, v, a, png_ptr->background_1.green); in png_do_compose()
3862 png_composite_16(w, v, a, png_ptr->background_1.blue); in png_do_compose()
3884 *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff); in png_do_compose()
3885 *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff); in png_do_compose()
3886 *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) in png_do_compose()
3888 *(sp + 3) = (png_byte)(png_ptr->background.green in png_do_compose()
3890 *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) in png_do_compose()
3892 *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff); in png_do_compose()
3905 png_composite_16(v, r, a, png_ptr->background.red); in png_do_compose()
3909 png_composite_16(v, g, a, png_ptr->background.green); in png_do_compose()
3913 png_composite_16(v, b, a, png_ptr->background.blue); in png_do_compose()
3938 png_do_gamma(png_row_infop row_info, png_bytep row, png_structrp png_ptr) in png_do_gamma() argument
3940 png_const_bytep gamma_table = png_ptr->gamma_table; in png_do_gamma()
3941 png_const_uint_16pp gamma_16_table = png_ptr->gamma_16_table; in png_do_gamma()
3942 int gamma_shift = png_ptr->gamma_shift; in png_do_gamma()
4139 png_do_encode_alpha(png_row_infop row_info, png_bytep row, png_structrp png_ptr) in png_do_encode_alpha() argument
4149 PNG_CONST png_bytep table = png_ptr->gamma_from_1; in png_do_encode_alpha()
4168 PNG_CONST png_uint_16pp table = png_ptr->gamma_16_from_1; in png_do_encode_alpha()
4169 PNG_CONST int gamma_shift = png_ptr->gamma_shift; in png_do_encode_alpha()
4196 png_warning(png_ptr, "png_do_encode_alpha: unexpected call"); in png_do_encode_alpha()
4717 png_do_read_transformations(png_structrp png_ptr, png_row_infop row_info) in png_do_read_transformations() argument
4721 if (png_ptr->row_buf == NULL) in png_do_read_transformations()
4727 png_error(png_ptr, "NULL row buffer"); in png_do_read_transformations()
4736 if ((png_ptr->flags & PNG_FLAG_DETECT_UNINITIALIZED) != 0 && in png_do_read_transformations()
4737 (png_ptr->flags & PNG_FLAG_ROW_INIT) == 0) in png_do_read_transformations()
4743 png_error(png_ptr, "Uninitialized row"); in png_do_read_transformations()
4747 if ((png_ptr->transformations & PNG_EXPAND) != 0) in png_do_read_transformations()
4751 png_do_expand_palette(row_info, png_ptr->row_buf + 1, in png_do_read_transformations()
4752 png_ptr->palette, png_ptr->trans_alpha, png_ptr->num_trans); in png_do_read_transformations()
4757 if (png_ptr->num_trans != 0 && in png_do_read_transformations()
4758 (png_ptr->transformations & PNG_EXPAND_tRNS) != 0) in png_do_read_transformations()
4759 png_do_expand(row_info, png_ptr->row_buf + 1, in png_do_read_transformations()
4760 &(png_ptr->trans_color)); in png_do_read_transformations()
4763 png_do_expand(row_info, png_ptr->row_buf + 1, in png_do_read_transformations()
4770 if ((png_ptr->transformations & PNG_STRIP_ALPHA) != 0 && in png_do_read_transformations()
4771 (png_ptr->transformations & PNG_COMPOSE) == 0 && in png_do_read_transformations()
4774 png_do_strip_channel(row_info, png_ptr->row_buf + 1, in png_do_read_transformations()
4779 if ((png_ptr->transformations & PNG_RGB_TO_GRAY) != 0) in png_do_read_transformations()
4782 png_do_rgb_to_gray(png_ptr, row_info, in png_do_read_transformations()
4783 png_ptr->row_buf + 1); in png_do_read_transformations()
4787 png_ptr->rgb_to_gray_status=1; in png_do_read_transformations()
4788 if ((png_ptr->transformations & PNG_RGB_TO_GRAY) == in png_do_read_transformations()
4790 png_warning(png_ptr, "png_do_rgb_to_gray found nongray pixel"); in png_do_read_transformations()
4792 if ((png_ptr->transformations & PNG_RGB_TO_GRAY) == in png_do_read_transformations()
4794 png_error(png_ptr, "png_do_rgb_to_gray found nongray pixel"); in png_do_read_transformations()
4834 if ((png_ptr->transformations & PNG_GRAY_TO_RGB) != 0 && in png_do_read_transformations()
4835 (png_ptr->mode & PNG_BACKGROUND_IS_GRAY) == 0) in png_do_read_transformations()
4836 png_do_gray_to_rgb(row_info, png_ptr->row_buf + 1); in png_do_read_transformations()
4841 if ((png_ptr->transformations & PNG_COMPOSE) != 0) in png_do_read_transformations()
4842 png_do_compose(row_info, png_ptr->row_buf + 1, png_ptr); in png_do_read_transformations()
4846 if ((png_ptr->transformations & PNG_GAMMA) != 0 && in png_do_read_transformations()
4849 (png_ptr->transformations & PNG_RGB_TO_GRAY) == 0 && in png_do_read_transformations()
4856 !((png_ptr->transformations & PNG_COMPOSE) != 0 && in png_do_read_transformations()
4857 ((png_ptr->num_trans != 0) || in png_do_read_transformations()
4858 (png_ptr->color_type & PNG_COLOR_MASK_ALPHA) != 0)) && in png_do_read_transformations()
4863 (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)) in png_do_read_transformations()
4864 png_do_gamma(row_info, png_ptr->row_buf + 1, png_ptr); in png_do_read_transformations()
4868 if ((png_ptr->transformations & PNG_STRIP_ALPHA) != 0 && in png_do_read_transformations()
4869 (png_ptr->transformations & PNG_COMPOSE) != 0 && in png_do_read_transformations()
4872 png_do_strip_channel(row_info, png_ptr->row_buf + 1, in png_do_read_transformations()
4877 if ((png_ptr->transformations & PNG_ENCODE_ALPHA) != 0 && in png_do_read_transformations()
4879 png_do_encode_alpha(row_info, png_ptr->row_buf + 1, png_ptr); in png_do_read_transformations()
4883 if ((png_ptr->transformations & PNG_SCALE_16_TO_8) != 0) in png_do_read_transformations()
4884 png_do_scale_16_to_8(row_info, png_ptr->row_buf + 1); in png_do_read_transformations()
4892 if ((png_ptr->transformations & PNG_16_TO_8) != 0) in png_do_read_transformations()
4893 png_do_chop(row_info, png_ptr->row_buf + 1); in png_do_read_transformations()
4897 if ((png_ptr->transformations & PNG_QUANTIZE) != 0) in png_do_read_transformations()
4899 png_do_quantize(row_info, png_ptr->row_buf + 1, in png_do_read_transformations()
4900 png_ptr->palette_lookup, png_ptr->quantize_index); in png_do_read_transformations()
4903 png_error(png_ptr, "png_do_quantize returned rowbytes=0"); in png_do_read_transformations()
4913 if ((png_ptr->transformations & PNG_EXPAND_16) != 0) in png_do_read_transformations()
4914 png_do_expand_16(row_info, png_ptr->row_buf + 1); in png_do_read_transformations()
4919 if ((png_ptr->transformations & PNG_GRAY_TO_RGB) != 0 && in png_do_read_transformations()
4920 (png_ptr->mode & PNG_BACKGROUND_IS_GRAY) != 0) in png_do_read_transformations()
4921 png_do_gray_to_rgb(row_info, png_ptr->row_buf + 1); in png_do_read_transformations()
4925 if ((png_ptr->transformations & PNG_INVERT_MONO) != 0) in png_do_read_transformations()
4926 png_do_invert(row_info, png_ptr->row_buf + 1); in png_do_read_transformations()
4930 if ((png_ptr->transformations & PNG_INVERT_ALPHA) != 0) in png_do_read_transformations()
4931 png_do_read_invert_alpha(row_info, png_ptr->row_buf + 1); in png_do_read_transformations()
4935 if ((png_ptr->transformations & PNG_SHIFT) != 0) in png_do_read_transformations()
4936 png_do_unshift(row_info, png_ptr->row_buf + 1, in png_do_read_transformations()
4937 &(png_ptr->shift)); in png_do_read_transformations()
4941 if ((png_ptr->transformations & PNG_PACK) != 0) in png_do_read_transformations()
4942 png_do_unpack(row_info, png_ptr->row_buf + 1); in png_do_read_transformations()
4948 png_ptr->num_palette_max >= 0) in png_do_read_transformations()
4949 png_do_check_palette_indexes(png_ptr, row_info); in png_do_read_transformations()
4953 if ((png_ptr->transformations & PNG_BGR) != 0) in png_do_read_transformations()
4954 png_do_bgr(row_info, png_ptr->row_buf + 1); in png_do_read_transformations()
4958 if ((png_ptr->transformations & PNG_PACKSWAP) != 0) in png_do_read_transformations()
4959 png_do_packswap(row_info, png_ptr->row_buf + 1); in png_do_read_transformations()
4963 if ((png_ptr->transformations & PNG_FILLER) != 0) in png_do_read_transformations()
4964 png_do_read_filler(row_info, png_ptr->row_buf + 1, in png_do_read_transformations()
4965 (png_uint_32)png_ptr->filler, png_ptr->flags); in png_do_read_transformations()
4969 if ((png_ptr->transformations & PNG_SWAP_ALPHA) != 0) in png_do_read_transformations()
4970 png_do_read_swap_alpha(row_info, png_ptr->row_buf + 1); in png_do_read_transformations()
4975 if ((png_ptr->transformations & PNG_SWAP_BYTES) != 0) in png_do_read_transformations()
4976 png_do_swap(row_info, png_ptr->row_buf + 1); in png_do_read_transformations()
4981 if ((png_ptr->transformations & PNG_USER_TRANSFORM) != 0) in png_do_read_transformations()
4983 if (png_ptr->read_user_transform_fn != NULL) in png_do_read_transformations()
4984 (*(png_ptr->read_user_transform_fn)) /* User read transform function */ in png_do_read_transformations()
4985 (png_ptr, /* png_ptr */ in png_do_read_transformations()
4993 png_ptr->row_buf + 1); /* start of pixel data for row */ in png_do_read_transformations()
4995 if (png_ptr->user_transform_depth != 0) in png_do_read_transformations()
4996 row_info->bit_depth = png_ptr->user_transform_depth; in png_do_read_transformations()
4998 if (png_ptr->user_transform_channels != 0) in png_do_read_transformations()
4999 row_info->channels = png_ptr->user_transform_channels; in png_do_read_transformations()