func: int ff_h264_field_end(H264Context *h, int in_setup)
  {
      AVCodecContext *const avctx = h->avctx;
      int err = 0;
      h->mb_y = 0;
      if (CONFIG_H264_VDPAU_DECODER &&
          h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
          ff_vdpau_h264_set_reference_frames(h);
      if (in_setup || !(avctx->active_thread_type & FF_THREAD_FRAME)) {
          if (!h->droppable) {
              err = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
              h->prev_poc_msb = h->poc_msb;
              h->prev_poc_lsb = h->poc_lsb;
          }
          h->prev_frame_num_offset = h->frame_num_offset;
          h->prev_frame_num        = h->frame_num;
          h->outputed_poc          = h->next_outputed_poc;
      }
      if (avctx->hwaccel) {
          if (avctx->hwaccel->end_frame(avctx) < 0)
              av_log(avctx, AV_LOG_ERROR,
                     "hardware accelerator failed to decode picture\n");
      }
      if (CONFIG_H264_VDPAU_DECODER &&
          h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
          ff_vdpau_h264_picture_complete(h);
  #if CONFIG_ERROR_RESILIENCE
      /*
       * FIXME: Error handling code does not seem to support interlaced
       * when slices span multiple rows
       * The ff_er_add_slice calls don't work right for bottom
       * fields; they cause massive erroneous error concealing
       * Error marking covers both fields (top and bottom).
       * This causes a mismatched s->error_count
       * and a bad error table. Further, the error count goes to
       * INT_MAX when called for bottom field, because mb_y is
       * past end by one (callers fault) and resync_mb_y != 0
       * causes problems for the first MB line, too.
       */
      if (!FIELD_PICTURE(h) && h->current_slice && !h->sps.new) {
          ff_h264_set_erpic(&h->er.cur_pic, h->cur_pic_ptr);
          ff_er_frame_end(&h->er);
      }
  #endif /* CONFIG_ERROR_RESILIENCE */
      if (!in_setup && !h->droppable)
          ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
                                    h->picture_structure == PICT_BOTTOM_FIELD);
      emms_c();
      h->current_slice = 0;
      return err;
  }