49 static int open_png(const char* name, png_structp* png_ptr, png_infop* info_ptr,  in open_png()  argument
75     *png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);  in open_png()
76     if (!*png_ptr) {  in open_png()
81     *info_ptr = png_create_info_struct(*png_ptr);  in open_png()
87     if (setjmp(png_jmpbuf(*png_ptr))) {  in open_png()
92     png_init_io(*png_ptr, fp);  in open_png()
93     png_set_sig_bytes(*png_ptr, sizeof(header));  in open_png()
94     png_read_info(*png_ptr, *info_ptr);  in open_png()
97     png_get_IHDR(*png_ptr, *info_ptr, width, height, &bit_depth,  in open_png()
100     *channels = png_get_channels(*png_ptr, *info_ptr);  in open_png()
106         png_set_expand_gray_1_2_4_to_8(*png_ptr);  in open_png()
112         png_set_palette_to_rgb(*png_ptr);  in open_png()
125         png_destroy_read_struct(png_ptr, info_ptr, NULL);  in open_png()
208     png_structp png_ptr = NULL;  in res_create_display_surface()  local
215     result = open_png(name, &png_ptr, &info_ptr, &width, &height, &channels);  in res_create_display_surface()
227         png_read_row(png_ptr, p_row, NULL);  in res_create_display_surface()
235     png_destroy_read_struct(&png_ptr, &info_ptr, NULL);  in res_create_display_surface()
244     png_structp png_ptr = NULL;  in res_create_multi_display_surface()  local
253     result = open_png(name, &png_ptr, &info_ptr, &width, &height, &channels);  in res_create_multi_display_surface()
259     if (png_get_text(png_ptr, info_ptr, &text, &num_text)) {  in res_create_multi_display_surface()
291         png_read_row(png_ptr, p_row, NULL);  in res_create_multi_display_surface()
302     png_destroy_read_struct(&png_ptr, &info_ptr, NULL);  in res_create_multi_display_surface()
319     png_structp png_ptr = NULL;  in res_create_alpha_surface()  local
326     result = open_png(name, &png_ptr, &info_ptr, &width, &height, &channels);  in res_create_alpha_surface()
348         png_read_row(png_ptr, p_row, NULL);  in res_create_alpha_surface()
354     png_destroy_read_struct(&png_ptr, &info_ptr, NULL);  in res_create_alpha_surface()
383     png_structp png_ptr = NULL;  in res_create_localized_alpha_surface()  local
399     result = open_png(name, &png_ptr, &info_ptr, &width, &height, &channels);  in res_create_localized_alpha_surface()
410         png_read_row(png_ptr, row, NULL);  in res_create_localized_alpha_surface()
431                 png_read_row(png_ptr, row, NULL);  in res_create_localized_alpha_surface()
440                 png_read_row(png_ptr, row, NULL);  in res_create_localized_alpha_surface()
446     png_destroy_read_struct(&png_ptr, &info_ptr, NULL);  in res_create_localized_alpha_surface()