Raw ffmpeg AVFrame

/* ffmpeg v4.0 */
AVFrame* frame;

{ /* alloc */
  frame = av_frame_alloc();

  frame->linesize[0]   = RAW_BUFFER_SIZE;
  frame->extended_data = frame.data;
  frame->nb_samples    = RAW_BUFFER_SIZE;
  frame->format        = -1;
  frame->sample_rate   = 0;
  frame->buf[0]        = av_buffer_alloc(frame->linesize[0]);
  if (!frame->buf[0]) {
      av_frame_unref(frame);
      /* error */
  }
  frame->extended_data[0] = frame->data[0] = frame->buf[0]->data;
}

{ /* free */
  av_frame_free(&frame);
}