ff_codec_open2_recursive  228 libavcodec/internal.h int ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options);
ff_codec_open2_recursive  133 libavcodec/smvjpegdec.c     if (ff_codec_open2_recursive(s->avctx, codec, &thread_opt) < 0) {