Function ffmpeg_dev::sys::ff_codec_open2_recursive

pub unsafe extern "C" fn ff_codec_open2_recursive(
    avctx: *mut AVCodecContext, 
    codec: *const AVCodec, 
    options: *mut *mut AVDictionary
) -> c_int

Call avcodec_open2 recursively by decrementing counter, unlocking mutex, calling the function and then restoring again. Assumes the mutex is already locked