pub unsafe extern "C" fn av_get_planar_sample_fmt(
sample_fmt: AVSampleFormat,
) -> AVSampleFormat展开描述
Get the planar alternative form of the given sample format.
If the passed sample_fmt is already in planar format, the format returned is the same as the input.
@return the planar alternative form of the given sample format or AV_SAMPLE_FMT_NONE on error.