ff_flac_write_header   50 libavformat/flacenc.c     return ff_flac_write_header(s->pb, s->streams[0]->codec);
ff_flac_write_header   27 libavformat/flacenc.h int ff_flac_write_header(ByteIOContext *pb, AVCodecContext *codec);
ff_flac_write_header  465 libavformat/matroskaenc.c             ret = ff_flac_write_header(dyn_cp, codec);