func: void ff_af_queue_init(AVCodecContext *avctx, AudioFrameQueue *afq)
  
  {
  
      afq->avctx             = avctx;
  
      afq->next_pts          = AV_NOPTS_VALUE;
  
      afq->remaining_delay   = avctx->delay;
  
      afq->remaining_samples = avctx->delay;
  
      afq->frame_queue       = NULL;
  
  }
  