48                     png_uint_32* width, png_uint_32* height, png_byte* channels) {  in open_png()  argument
98     *channels = png_get_channels(*png_ptr, *info_ptr);  in open_png()
100     if (bit_depth == 8 && *channels == 3 && color_type == PNG_COLOR_TYPE_RGB) {  in open_png()
102     } else if (bit_depth <= 8 && *channels == 1 && color_type == PNG_COLOR_TYPE_GRAY) {  in open_png()
105     } else if (bit_depth <= 8 && *channels == 1 && color_type == PNG_COLOR_TYPE_PALETTE) {  in open_png()
111         *channels = 3;  in open_png()
114                 bit_depth, *channels, color_type);  in open_png()
164                                   int channels, int width) {  in transform_rgb_to_draw()  argument
169     switch (channels) {  in transform_rgb_to_draw()
204     png_byte channels;  in res_create_display_surface()  local
210     result = open_png(name, &png_ptr, &info_ptr, &width, &height, &channels);  in res_create_display_surface()
226         transform_rgb_to_draw(p_row, surface->data + y * surface->row_bytes, channels, width);  in res_create_display_surface()
245     png_byte channels;  in res_create_multi_display_surface()  local
254     result = open_png(name, &png_ptr, &info_ptr, &width, &height, &channels);  in res_create_multi_display_surface()
306         transform_rgb_to_draw(p_row, out_row, channels, width);  in res_create_multi_display_surface()
332     png_byte channels;  in res_create_alpha_surface()  local
336     result = open_png(name, &png_ptr, &info_ptr, &width, &height, &channels);  in res_create_alpha_surface()
339     if (channels != 1) {  in res_create_alpha_surface()
393     png_byte channels;  in res_create_localized_alpha_surface()  local
408     result = open_png(name, &png_ptr, &info_ptr, &width, &height, &channels);  in res_create_localized_alpha_surface()
411     if (channels != 1) {  in res_create_localized_alpha_surface()