Function get_pixel_format

platform/mac/pixelformat.cpp:867–875

static const pixel_format *get_pixel_format(int format, bool allow_nondisplayable) {
    /* Check if the pixel format is valid. Note that it is legal to pass an invalid
     * format in case of probing the number of pixel formats.
     */
    if (is_valid_pixel_format(format) && (is_displayable_pixel_format(format) || allow_nondisplayable)) {
        return &pixel_formats[format - 1];
    }
    return NULL;
}

static bool initialized = false;