Function libheif_sys::heif_image_get_plane_readonly

pub unsafe extern "C" fn heif_image_get_plane_readonly(
    arg1: *const heif_image,
    channel: heif_channel,
    out_stride: *mut c_int
) -> *const u8

Get a pointer to the actual pixel data. The ‘out_stride’ is returned as “bytes per line”. When out_stride is NULL, no value will be written. Returns NULL if a non-existing channel was given.