Function ffav_sys::av_image_check_sar

pub unsafe extern "C" fn av_image_check_sar(
    w: c_uint, 
    h: c_uint, 
    sar: AVRational
) -> c_int

Check if the given sample aspect ratio of an image is valid.

It is considered invalid if the denominator is 0 or if applying the ratio to the image size would make the smaller dimension less than 1. If the sar numerator is 0, it is considered unknown and will return as valid.

@param w width of the image @param h height of the image @param sar sample aspect ratio of the image @return 0 if valid, a negative AVERROR code otherwise