audio_write_header  163 libavdevice/alsa-audio-enc.c     .write_header   = audio_write_header,
audio_write_header  113 libavdevice/oss_audio_enc.c     .write_header   = audio_write_header,
audio_write_header   95 libavdevice/sndio_enc.c     .write_header   = audio_write_header,