compat_free_buffer  938 libavcodec/utils.c         dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
compat_free_buffer  320 libavfilter/buffersink.c     buf->buf->free = compat_free_buffer;
compat_free_buffer  223 libavfilter/buffersrc.c     dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, buf,