fprintf (stderr, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
static int svq3_decode_frame (AVCodecContext *avctx,			      void *data, int *data_size,			      uint8_t *buf, int buf_size) {  MpegEncContext *const s = avctx->priv_data;  H264Context *const h = avctx->priv_data;  int m, mb_type;  *data_size = 0;  s->flags = avctx->flags;    if (!s->context_initialized) {    s->width = avctx->width;    s->height = avctx->height;    h->pred4x4[DIAG_DOWN_LEFT_PRED] = pred4x4_down_left_svq3_c;    h->pred16x16[PLANE_PRED8x8] = pred16x16_plane_svq3_c;    h->halfpel_flag = 1;    h->thirdpel_flag = 1;    h->unknown_svq3_flag = 0;    h->chroma_qp = 4;    if (MPV_common_init (s) < 0)      return -1;    h->b_stride = 4*s->mb_width;    alloc_tables (h);    if (avctx->extradata && avctx->extradata_size >= 0x64	&& !memcmp (avctx->extradata, "SVQ3", 4)) {      GetBitContext gb;      init_get_bits (&gb, (uint8_t *) avctx->extradata + 0x62,		     8*(avctx->extradata_size - 0x62));      /* 'frame size code' and optional 'width, height' */      if (get_bits (&gb, 3) == 7) {	get_bits (&gb, 12);	get_bits (&gb, 12);      }      h->halfpel_flag = get_bits1 (&gb);      h->thirdpel_flag = get_bits1 (&gb);      /* unknown fields */      get_bits1 (&gb);      get_bits1 (&gb);      get_bits1 (&gb);      get_bits1 (&gb);      s->low_delay = get_bits1 (&gb);      /* unknown field */      get_bits1 (&gb);      while (get_bits1 (&gb)) {	get_bits (&gb, 8);      }      h->unknown_svq3_flag = get_bits1 (&gb);      avctx->has_b_frames = !s->low_delay;    }  }  /* special case for last picture */  if (buf_size == 0) {    if (s->next_picture_ptr && !s->low_delay) {      *(AVFrame *) data = *(AVFrame *) &s->next_picture;      *data_size = sizeof(AVFrame);    }    return 0;  }  init_get_bits (&s->gb, buf, 8*buf_size);  s->mb_x = s->mb_y = 0;  if (svq3_decode_slice_header (h))    return -1;  s->pict_type = h->slice_type;  s->picture_number = h->slice_num;  if(avctx->debug&FF_DEBUG_PICT_INFO){      printf("%c hpel:%d, tpel:%d aqp:%d qp:%d\n",       av_get_pict_type_char(s->pict_type), h->halfpel_flag, h->thirdpel_flag,      s->adaptive_quant, s->qscale      );  }  /* for hurry_up==5 */  s->current_picture.pict_type = s->pict_type;  s->current_picture.key_frame = (s->pict_type == I_TYPE);  /* skip b frames if we dont have reference frames */  if (s->last_picture_ptr == NULL && s->pict_type == B_TYPE) return 0;  /* skip b frames if we are in a hurry */  if (avctx->hurry_up && s->pict_type == B_TYPE) return 0;  /* skip everything if we are in a hurry >= 5 */  if (avctx->hurry_up >= 5) return 0;  if (s->next_p_frame_damaged) {    if (s->pict_type == B_TYPE)      return 0;    else      s->next_p_frame_damaged = 0;  }  frame_start (h);  if (s->pict_type == B_TYPE) {    h->frame_num_offset = (h->slice_num - h->prev_frame_num);    if (h->frame_num_offset < 0) {      h->frame_num_offset += 256;    }    if (h->frame_num_offset == 0 || h->frame_num_offset >= h->prev_frame_num_offset) {      printf ("error in B-frame picture id\n");      return -1;    }  } else {    h->prev_frame_num = h->frame_num;    h->frame_num = h->slice_num;    h->prev_frame_num_offset = (h->frame_num - h->prev_frame_num);    if (h->prev_frame_num_offset < 0) {      h->prev_frame_num_offset += 256;    }  }  for(m=0; m<2; m++){    int i;    for(i=0; i<4; i++){      int j;      for(j=-1; j<4; j++)	h->ref_cache[m][scan8[0] + 8*i + j]= 1;      h->ref_cache[m][scan8[0] + 8*i + j]= PART_NOT_AVAILABLE;    }  }    for (s->mb_y=0; s->mb_y < s->mb_height; s->mb_y++) {    for (s->mb_x=0; s->mb_x < s->mb_width; s->mb_x++) {      if ( (s->gb.index + 7) >= s->gb.size_in_bits &&	  ((s->gb.index & 7) == 0 || show_bits (&s->gb, (-s->gb.index & 7)) == 0)) {	s->gb.index = h->next_slice_index;	s->gb.size_in_bits = 8*buf_size;	if (svq3_decode_slice_header (h))	  return -1;	/* TODO: support s->mb_skip_run */      }      mb_type = svq3_get_ue_golomb (&s->gb);      if (s->pict_type == I_TYPE) {	mb_type += 8;      } else if (s->pict_type == B_TYPE && mb_type >= 4) {	mb_type += 4;      }      if (mb_type > 33 || svq3_decode_mb (h, mb_type)) {	fprintf (stderr, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);	return -1;      }      if (mb_type != 0) {	hl_decode_mb (h);      }      if (s->pict_type != B_TYPE && !s->low_delay) {	s->current_picture.mb_type[s->mb_x + s->mb_y*s->mb_stride] =			(s->pict_type == P_TYPE && mb_type < 8) ? (mb_type - 1) : -1;      }    }    ff_draw_horiz_band(s, 16*s->mb_y, 16);  }  MPV_frame_end(s);  if (s->pict_type == B_TYPE || s->low_delay) {    *(AVFrame *) data = *(AVFrame *) &s->current_picture;  } else {    *(AVFrame *) data = *(AVFrame *) &s->last_picture;  }  avctx->frame_number = s->picture_number - 1;  /* dont output the last pic after seeking */  if (s->last_picture_ptr || s->low_delay) {    *data_size = sizeof(AVFrame);  }  return buf_size;}