Lines Matching defs:png_do_rgb_to_gray
992 * png_do_rgb_to_gray for more discussion of the values. In this case
2144 png_do_rgb_to_gray(png_ptr, row_info,
2152 png_warning(png_ptr, "png_do_rgb_to_gray found nongray pixel");
2156 png_error(png_ptr, "png_do_rgb_to_gray found nongray pixel");
3227 png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
3232 png_debug(1, "in png_do_rgb_to_gray");