Function libheif_sys::heif_get_decoder_descriptors

pub unsafe extern "C" fn heif_get_decoder_descriptors(
    format_filter: heif_compression_format,
    out_decoders: *mut *const heif_decoder_descriptor,
    count: c_int
) -> c_int

Get a list of available decoders. You can filter the encoders by compression format. Use format_filter==heif_compression_undefined to get all available decoders. The returned list of decoders is sorted by their priority (which is a plugin property). The number of decoders is returned, which are not more than ‘count’ if (out_decoders != nullptr). By setting out_decoders==nullptr, you can query the number of decoders, ‘count’ is ignored.