libavcodec/h264.c:1046: error: Buffer Overrun L3
  Offset: [-1052488119, 3] Size: 4 by call to `decode_nal_units`.

libavcodec/h264.c:1046:17: Call
1044.     }
1045. 
1046.     buf_index = decode_nal_units(h, buf, buf_size);
                      ^
1047.     if (buf_index < 0)
1048.         return AVERROR_INVALIDDATA;

libavcodec/h264.c:818:11: Call
  816.     }
  817. 
  818.     ret = ff_h2645_packet_split(&h->pkt, buf, buf_size, avctx, h->is_avc,
                 ^
  819.                                 h->nal_length_size, avctx->codec_id);
  820.     if (ret < 0) {

libavcodec/h2645_parse.c:260:15: Call
    258.         nal->size_bits = get_bit_length(nal, skip_trailing_zeros);
    259. 
    260.         ret = init_get_bits(&nal->gb, nal->data, nal->size_bits);
                       ^
    261.         if (ret < 0)
    262.             return ret;

libavcodec/get_bits.h:384:1: Parameter `bit_size`
      382.  * @return 0 on success, AVERROR_INVALIDDATA if the buffer_size would overflow.
      383.  */
      384. static inline int init_get_bits(GetBitContext *s, const uint8_t *buffer,
           ^
      385.                                 int bit_size)
      386. {

libavcodec/get_bits.h:401:5: Assignment
      399.     s->size_in_bits       = bit_size;
      400. #if !UNCHECKED_BITSTREAM_READER
      401.     s->size_in_bits_plus8 = bit_size + 8;
               ^
      402. #endif
      403.     s->buffer_end         = buffer + buffer_size;

libavcodec/h264.c:1046:17: Call
1044.     }
1045. 
1046.     buf_index = decode_nal_units(h, buf, buf_size);
                      ^
1047.     if (buf_index < 0)
1048.         return AVERROR_INVALIDDATA;

libavcodec/h264.c:804:1: Parameter `h->slice_ctx->intra16x16_pred_mode`
  802. }
  803. 
  804. static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
       ^
  805. {
  806.     AVCodecContext *const avctx = h->avctx;

libavcodec/h264.c:950:15: Call
  948.     }
  949.     if (context_count) {
  950.         ret = ff_h264_execute_decode_slices(h, context_count);
                     ^
  951.         if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
  952.             goto end;

libavcodec/h264_slice.c:2113:1: Parameter `h->slice_ctx->intra16x16_pred_mode`
    2111.  * @param context_count number of contexts to execute
    2112.  */
    2113. int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count)
          ^
    2114. {
    2115.     AVCodecContext *const avctx = h->avctx;

libavcodec/h264_slice.c:2127:15: Call
    2125.         h->postpone_filter = 0;
    2126. 
    2127.         ret = decode_slice(avctx, &h->slice_ctx[0]);
                        ^
    2128.         h->mb_y = h->slice_ctx[0].mb_y;
    2129.         return ret;

libavcodec/h264_slice.c:1917:1: Parameter `arg->intra16x16_pred_mode`
      1915. }
      1916. 
      1917. static int decode_slice(struct AVCodecContext *avctx, void *arg)
            ^
      1918. {
      1919.     H264SliceContext *sl = arg;

libavcodec/h264_slice.c:1962:19: Call
      1960.             }
      1961. 
      1962.             ret = ff_h264_decode_mb_cabac(h, sl);
                              ^
      1963.             // STOP_TIMER("decode_mb_cabac")
      1964. 

libavcodec/h264_cabac.c:1909:1: Parameter `sl->intra16x16_pred_mode`
        1907.  * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR if an error is noticed
        1908.  */
        1909. int ff_h264_decode_mb_cabac(const H264Context *h, H264SliceContext *sl)
              ^
        1910. {
        1911.     const SPS *sps = h->ps.sps;

libavcodec/h264_cabac.c:2084:40: Call
        2082.                 return -1;
        2083.         } else {
        2084.             sl->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h->avctx, sl->top_samples_available,
                                                     ^
        2085.                                                                      sl->left_samples_available, sl->intra16x16_pred_mode, 0);
        2086.             if (sl->intra16x16_pred_mode < 0) return -1;

libavcodec/h264_parse.c:141:1: <Offset trace>
139.  * change the dc mode so it only uses the available blocks.
140.  */
141. int ff_h264_check_intra_pred_mode(void *logctx, int top_samples_available,
     ^
142.                                   int left_samples_available,
143.                                   int mode, int is_chroma)

libavcodec/h264_parse.c:141:1: Parameter `mode`
          139.  * change the dc mode so it only uses the available blocks.
          140.  */
          141. int ff_h264_check_intra_pred_mode(void *logctx, int top_samples_available,
               ^
          142.                                   int left_samples_available,
          143.                                   int mode, int is_chroma)

libavcodec/h264_parse.c:145:5: <Length trace>
143.                                   int mode, int is_chroma)
144. {
145.     static const int8_t top[4]  = { LEFT_DC_PRED8x8, 1, -1, -1 };
         ^
146.     static const int8_t left[5] = { TOP_DC_PRED8x8, -1,  2, -1, DC_128_PRED8x8 };
147. 

libavcodec/h264_parse.c:145:5: Array declaration
          143.                                   int mode, int is_chroma)
          144. {
          145.     static const int8_t top[4]  = { LEFT_DC_PRED8x8, 1, -1, -1 };
                   ^
          146.     static const int8_t left[5] = { TOP_DC_PRED8x8, -1,  2, -1, DC_128_PRED8x8 };
          147. 

libavcodec/h264_parse.c:155:16: Array access: Offset: [-1052488119, 3] Size: 4 by call to `decode_nal_units` 
          153. 
          154.     if (!(top_samples_available & 0x8000)) {
          155.         mode = top[mode];
                              ^
          156.         if (mode < 0) {
          157.             av_log(logctx, AV_LOG_ERROR,

int ff_h264_check_intra_pred_mode(void *logctx, int top_samples_available,
                                  int left_samples_available,
                                  int mode, int is_chroma)
{
    static const int8_t top[4]  = { LEFT_DC_PRED8x8, 1, -1, -1 };
    static const int8_t left[5] = { TOP_DC_PRED8x8, -1,  2, -1, DC_128_PRED8x8 };
    if (mode > 3U) {
        av_log(logctx, AV_LOG_ERROR,
               "out of range intra chroma pred mode\n");
        return AVERROR_INVALIDDATA;
    }
    if (!(top_samples_available & 0x8000)) {
        mode = top[mode];
        if (mode < 0) {
            av_log(logctx, AV_LOG_ERROR,
                   "top block unavailable for requested intra mode\n");
            return AVERROR_INVALIDDATA;
        }
    }
    if ((left_samples_available & 0x8080) != 0x8080) {
        mode = left[mode];
        if (is_chroma && (left_samples_available & 0x8080)) {
            mode = ALZHEIMER_DC_L0T_PRED8x8 +
                   (!(left_samples_available & 0x8000)) +
                   2 * (mode == DC_128_PRED8x8);
        }
        if (mode < 0) {
            av_log(logctx, AV_LOG_ERROR,
                   "left block unavailable for requested intra mode\n");
            return AVERROR_INVALIDDATA;
        }
    }
    return mode;
}
['static int h264_decode_frame(AVCodecContext *avctx, void *data,\n                             int *got_frame, AVPacket *avpkt)\n{\n    const uint8_t *buf = avpkt->data;\n    int buf_size       = avpkt->size;\n    H264Context *h     = avctx->priv_data;\n    AVFrame *pict      = data;\n    int buf_index      = 0;\n    int ret;\n    h->flags = avctx->flags;\n    h->setup_finished = 0;\nout:\n    if (buf_size == 0) {\n        H264Picture *out;\n        int i, out_idx;\n        h->cur_pic_ptr = NULL;\n        out     = h->delayed_pic[0];\n        out_idx = 0;\n        for (i = 1;\n             h->delayed_pic[i] &&\n             !h->delayed_pic[i]->f->key_frame &&\n             !h->delayed_pic[i]->mmco_reset;\n             i++)\n            if (h->delayed_pic[i]->poc < out->poc) {\n                out     = h->delayed_pic[i];\n                out_idx = i;\n            }\n        for (i = out_idx; h->delayed_pic[i]; i++)\n            h->delayed_pic[i] = h->delayed_pic[i + 1];\n        if (out) {\n            ret = output_frame(h, pict, out->f);\n            if (ret < 0)\n                return ret;\n            *got_frame = 1;\n        }\n        return buf_index;\n    }\n    buf_index = decode_nal_units(h, buf, buf_size);\n    if (buf_index < 0)\n        return AVERROR_INVALIDDATA;\n    if (!h->cur_pic_ptr && h->nal_unit_type == NAL_END_SEQUENCE) {\n        buf_size = 0;\n        goto out;\n    }\n    if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS) && !h->cur_pic_ptr) {\n        if (avctx->skip_frame >= AVDISCARD_NONREF)\n            return 0;\n        av_log(avctx, AV_LOG_ERROR, "no frame!\\n");\n        return AVERROR_INVALIDDATA;\n    }\n    if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS) ||\n        (h->mb_y >= h->mb_height && h->mb_height)) {\n        if (avctx->flags2 & AV_CODEC_FLAG2_CHUNKS)\n            decode_postinit(h, 1);\n        ff_h264_field_end(h, &h->slice_ctx[0], 0);\n        *got_frame = 0;\n        if (h->next_output_pic && ((avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT) ||\n                                   h->next_output_pic->recovered)) {\n            if (!h->next_output_pic->recovered)\n                h->next_output_pic->f->flags |= AV_FRAME_FLAG_CORRUPT;\n            ret = output_frame(h, pict, h->next_output_pic->f);\n            if (ret < 0)\n                return ret;\n            *got_frame = 1;\n        }\n    }\n    assert(pict->buf[0] || !*got_frame);\n    return get_consumed_bytes(buf_index, buf_size);\n}', 'static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)\n{\n    AVCodecContext *const avctx = h->avctx;\n    unsigned context_count = 0;\n    int nals_needed = 0;\n    int i, ret = 0;\n    if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS)) {\n        h->current_slice = 0;\n        if (!h->first_field)\n            h->cur_pic_ptr = NULL;\n        ff_h264_sei_uninit(&h->sei);\n    }\n    ret = ff_h2645_packet_split(&h->pkt, buf, buf_size, avctx, h->is_avc,\n                                h->nal_length_size, avctx->codec_id);\n    if (ret < 0) {\n        av_log(avctx, AV_LOG_ERROR,\n               "Error splitting the input into NAL units.\\n");\n        return ret;\n    }\n    if (avctx->active_thread_type & FF_THREAD_FRAME)\n        nals_needed = get_last_needed_nal(h);\n    for (i = 0; i < h->pkt.nb_nals; i++) {\n        H2645NAL *nal = &h->pkt.nals[i];\n        H264SliceContext *sl = &h->slice_ctx[context_count];\n        int err;\n        if (avctx->skip_frame >= AVDISCARD_NONREF &&\n            nal->ref_idc == 0 && nal->type != NAL_SEI)\n            continue;\n        h->nal_ref_idc   = nal->ref_idc;\n        h->nal_unit_type = nal->type;\n        err = 0;\n        switch (nal->type) {\n        case NAL_IDR_SLICE:\n            if (nal->type != NAL_IDR_SLICE) {\n                av_log(h->avctx, AV_LOG_ERROR,\n                       "Invalid mix of idr and non-idr slices\\n");\n                ret = -1;\n                goto end;\n            }\n            idr(h);\n        case NAL_SLICE:\n            sl->gb = nal->gb;\n            if ((err = ff_h264_decode_slice_header(h, sl)))\n                break;\n            if (h->sei.recovery_point.recovery_frame_cnt >= 0 && h->recovery_frame < 0) {\n                h->recovery_frame = (h->poc.frame_num + h->sei.recovery_point.recovery_frame_cnt) &\n                                    ((1 << h->ps.sps->log2_max_frame_num) - 1);\n            }\n            h->cur_pic_ptr->f->key_frame |=\n                (nal->type == NAL_IDR_SLICE) || (h->sei.recovery_point.recovery_frame_cnt >= 0);\n            if (nal->type == NAL_IDR_SLICE || h->recovery_frame == h->poc.frame_num) {\n                h->recovery_frame         = -1;\n                h->cur_pic_ptr->recovered = 1;\n            }\n            if (nal->type == NAL_IDR_SLICE)\n                h->frame_recovered |= FRAME_RECOVERED_IDR;\n            h->cur_pic_ptr->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_IDR);\n            if (h->current_slice == 1) {\n                if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS))\n                    decode_postinit(h, i >= nals_needed);\n                if (h->avctx->hwaccel &&\n                    (ret = h->avctx->hwaccel->start_frame(h->avctx, NULL, 0)) < 0)\n                    return ret;\n            }\n            if (sl->redundant_pic_count == 0 &&\n                (avctx->skip_frame < AVDISCARD_NONREF || nal->ref_idc) &&\n                (avctx->skip_frame < AVDISCARD_BIDIR  ||\n                 sl->slice_type_nos != AV_PICTURE_TYPE_B) &&\n                (avctx->skip_frame < AVDISCARD_NONKEY ||\n                 h->cur_pic_ptr->f->key_frame) &&\n                avctx->skip_frame < AVDISCARD_ALL) {\n                if (avctx->hwaccel) {\n                    ret = avctx->hwaccel->decode_slice(avctx, nal->raw_data, nal->raw_size);\n                    if (ret < 0)\n                        return ret;\n                } else\n                    context_count++;\n            }\n            break;\n        case NAL_DPA:\n        case NAL_DPB:\n        case NAL_DPC:\n            avpriv_request_sample(avctx, "data partitioning");\n            ret = AVERROR(ENOSYS);\n            goto end;\n            break;\n        case NAL_SEI:\n            ret = ff_h264_sei_decode(&h->sei, &nal->gb, &h->ps, avctx);\n            if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))\n                goto end;\n            break;\n        case NAL_SPS:\n            ret = ff_h264_decode_seq_parameter_set(&nal->gb, avctx, &h->ps);\n            if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))\n                goto end;\n            break;\n        case NAL_PPS:\n            ret = ff_h264_decode_picture_parameter_set(&nal->gb, avctx, &h->ps,\n                                                       nal->size_bits);\n            if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))\n                goto end;\n            break;\n        case NAL_AUD:\n        case NAL_END_SEQUENCE:\n        case NAL_END_STREAM:\n        case NAL_FILLER_DATA:\n        case NAL_SPS_EXT:\n        case NAL_AUXILIARY_SLICE:\n            break;\n        case NAL_FF_IGNORE:\n            break;\n        default:\n            av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\\n",\n                   nal->type, nal->size_bits);\n        }\n        if (context_count == h->nb_slice_ctx) {\n            ret = ff_h264_execute_decode_slices(h, context_count);\n            if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))\n                goto end;\n            context_count = 0;\n        }\n        if (err < 0) {\n            av_log(h->avctx, AV_LOG_ERROR, "decode_slice_header error\\n");\n            sl->ref_count[0] = sl->ref_count[1] = sl->list_count = 0;\n        }\n    }\n    if (context_count) {\n        ret = ff_h264_execute_decode_slices(h, context_count);\n        if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))\n            goto end;\n    }\n    ret = 0;\nend:\n    if (h->cur_pic_ptr && !h->droppable) {\n        ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,\n                                  h->picture_structure == PICT_BOTTOM_FIELD);\n    }\n    return (ret < 0) ? ret : buf_size;\n}', 'int ff_h2645_packet_split(H2645Packet *pkt, const uint8_t *buf, int length,\n                          void *logctx, int is_nalff, int nal_length_size,\n                          enum AVCodecID codec_id)\n{\n    int consumed, ret = 0;\n    pkt->nb_nals = 0;\n    while (length >= 4) {\n        H2645NAL *nal;\n        int extract_length = 0;\n        int skip_trailing_zeros = 1;\n        if (is_nalff) {\n            int i;\n            for (i = 0; i < nal_length_size; i++)\n                extract_length = (extract_length << 8) | buf[i];\n            buf    += nal_length_size;\n            length -= nal_length_size;\n            if (extract_length > length) {\n                av_log(logctx, AV_LOG_ERROR, "Invalid NAL unit size.\\n");\n                return AVERROR_INVALIDDATA;\n            }\n        } else {\n            if (buf[2] == 0) {\n                length--;\n                buf++;\n                continue;\n            }\n            if (buf[0] != 0 || buf[1] != 0 || buf[2] != 1)\n                return AVERROR_INVALIDDATA;\n            buf           += 3;\n            length        -= 3;\n            extract_length = length;\n        }\n        if (pkt->nals_allocated < pkt->nb_nals + 1) {\n            int new_size = pkt->nals_allocated + 1;\n            H2645NAL *tmp = av_realloc_array(pkt->nals, new_size, sizeof(*tmp));\n            if (!tmp)\n                return AVERROR(ENOMEM);\n            pkt->nals = tmp;\n            memset(pkt->nals + pkt->nals_allocated, 0,\n                   (new_size - pkt->nals_allocated) * sizeof(*tmp));\n            pkt->nals_allocated = new_size;\n        }\n        nal = &pkt->nals[pkt->nb_nals++];\n        consumed = ff_h2645_extract_rbsp(buf, extract_length, nal);\n        if (consumed < 0)\n            return consumed;\n        if (consumed < length - 3 &&\n            buf[consumed]     == 0x00 && buf[consumed + 1] == 0x00 &&\n            buf[consumed + 2] == 0x01 && buf[consumed + 3] == 0xE0)\n            skip_trailing_zeros = 0;\n        nal->size_bits = get_bit_length(nal, skip_trailing_zeros);\n        ret = init_get_bits(&nal->gb, nal->data, nal->size_bits);\n        if (ret < 0)\n            return ret;\n        if (codec_id == AV_CODEC_ID_HEVC)\n            ret = hevc_parse_nal_header(nal, logctx);\n        else\n            ret = h264_parse_nal_header(nal, logctx);\n        if (ret <= 0) {\n            if (ret < 0) {\n                av_log(logctx, AV_LOG_ERROR, "Invalid NAL unit %d, skipping.\\n",\n                       nal->type);\n            }\n            pkt->nb_nals--;\n        }\n        buf    += consumed;\n        length -= consumed;\n    }\n    return 0;\n}', 'static inline int init_get_bits(GetBitContext *s, const uint8_t *buffer,\n                                int bit_size)\n{\n    int buffer_size;\n    int ret = 0;\n    if (bit_size > INT_MAX - 7 || bit_size < 0 || !buffer) {\n        bit_size    = 0;\n        buffer      = NULL;\n        ret         = AVERROR_INVALIDDATA;\n    }\n    buffer_size = (bit_size + 7) >> 3;\n    s->buffer             = buffer;\n    s->size_in_bits       = bit_size;\n#if !UNCHECKED_BITSTREAM_READER\n    s->size_in_bits_plus8 = bit_size + 8;\n#endif\n    s->buffer_end         = buffer + buffer_size;\n    s->index              = 0;\n    return ret;\n}', 'int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count)\n{\n    AVCodecContext *const avctx = h->avctx;\n    H264SliceContext *sl;\n    int i, j;\n    if (h->avctx->hwaccel)\n        return 0;\n    if (context_count == 1) {\n        int ret;\n        h->slice_ctx[0].next_slice_idx = h->mb_width * h->mb_height;\n        h->postpone_filter = 0;\n        ret = decode_slice(avctx, &h->slice_ctx[0]);\n        h->mb_y = h->slice_ctx[0].mb_y;\n        return ret;\n    } else {\n        for (i = 0; i < context_count; i++) {\n            int next_slice_idx = h->mb_width * h->mb_height;\n            int slice_idx;\n            sl                 = &h->slice_ctx[i];\n            sl->er.error_count = 0;\n            slice_idx = sl->mb_y * h->mb_width + sl->mb_x;\n            for (j = 0; j < context_count; j++) {\n                H264SliceContext *sl2 = &h->slice_ctx[j];\n                int        slice_idx2 = sl2->mb_y * h->mb_width + sl2->mb_x;\n                if (i == j || slice_idx2 < slice_idx)\n                    continue;\n                next_slice_idx = FFMIN(next_slice_idx, slice_idx2);\n            }\n            sl->next_slice_idx = next_slice_idx;\n        }\n        avctx->execute(avctx, decode_slice, h->slice_ctx,\n                       NULL, context_count, sizeof(h->slice_ctx[0]));\n        sl                   = &h->slice_ctx[context_count - 1];\n        h->mb_y              = sl->mb_y;\n        for (i = 1; i < context_count; i++)\n            h->slice_ctx[0].er.error_count += h->slice_ctx[i].er.error_count;\n        if (h->postpone_filter) {\n            h->postpone_filter = 0;\n            for (i = 0; i < context_count; i++) {\n                int y_end, x_end;\n                sl = &h->slice_ctx[i];\n                y_end = FFMIN(sl->mb_y + 1, h->mb_height);\n                x_end = (sl->mb_y >= h->mb_height) ? h->mb_width : sl->mb_x;\n                for (j = sl->resync_mb_y; j < y_end; j += 1 + FIELD_OR_MBAFF_PICTURE(h)) {\n                    sl->mb_y = j;\n                    loop_filter(h, sl, j > sl->resync_mb_y ? 0 : sl->resync_mb_x,\n                                j == y_end - 1 ? x_end : h->mb_width);\n                }\n            }\n        }\n    }\n    return 0;\n}', 'static int decode_slice(struct AVCodecContext *avctx, void *arg)\n{\n    H264SliceContext *sl = arg;\n    const H264Context *h = sl->h264;\n    int lf_x_start = sl->mb_x;\n    int orig_deblock = sl->deblocking_filter;\n    int ret;\n    sl->linesize   = h->cur_pic_ptr->f->linesize[0];\n    sl->uvlinesize = h->cur_pic_ptr->f->linesize[1];\n    ret = alloc_scratch_buffers(sl, sl->linesize);\n    if (ret < 0)\n        return ret;\n    sl->mb_skip_run = -1;\n    if (h->postpone_filter)\n        sl->deblocking_filter = 0;\n    sl->is_complex = FRAME_MBAFF(h) || h->picture_structure != PICT_FRAME ||\n                     avctx->codec_id != AV_CODEC_ID_H264 ||\n                     (CONFIG_GRAY && (h->flags & AV_CODEC_FLAG_GRAY));\n    if (h->ps.pps->cabac) {\n        align_get_bits(&sl->gb);\n        ff_init_cabac_decoder(&sl->cabac,\n                              sl->gb.buffer + get_bits_count(&sl->gb) / 8,\n                              (get_bits_left(&sl->gb) + 7) / 8);\n        ff_h264_init_cabac_states(h, sl);\n        for (;;) {\n            int ret, eos;\n            if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {\n                av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\\n",\n                       sl->next_slice_idx);\n                return AVERROR_INVALIDDATA;\n            }\n            ret = ff_h264_decode_mb_cabac(h, sl);\n            if (ret >= 0)\n                ff_h264_hl_decode_mb(h, sl);\n            if (ret >= 0 && FRAME_MBAFF(h)) {\n                sl->mb_y++;\n                ret = ff_h264_decode_mb_cabac(h, sl);\n                if (ret >= 0)\n                    ff_h264_hl_decode_mb(h, sl);\n                sl->mb_y--;\n            }\n            eos = get_cabac_terminate(&sl->cabac);\n            if ((h->workaround_bugs & FF_BUG_TRUNCATED) &&\n                sl->cabac.bytestream > sl->cabac.bytestream_end + 2) {\n                er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,\n                             sl->mb_y, ER_MB_END);\n                if (sl->mb_x >= lf_x_start)\n                    loop_filter(h, sl, lf_x_start, sl->mb_x + 1);\n                goto finish;\n            }\n            if (ret < 0 || sl->cabac.bytestream > sl->cabac.bytestream_end + 2) {\n                av_log(h->avctx, AV_LOG_ERROR,\n                       "error while decoding MB %d %d, bytestream %td\\n",\n                       sl->mb_x, sl->mb_y,\n                       sl->cabac.bytestream_end - sl->cabac.bytestream);\n                er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,\n                             sl->mb_y, ER_MB_ERROR);\n                return AVERROR_INVALIDDATA;\n            }\n            if (++sl->mb_x >= h->mb_width) {\n                loop_filter(h, sl, lf_x_start, sl->mb_x);\n                sl->mb_x = lf_x_start = 0;\n                decode_finish_row(h, sl);\n                ++sl->mb_y;\n                if (FIELD_OR_MBAFF_PICTURE(h)) {\n                    ++sl->mb_y;\n                    if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)\n                        predict_field_decoding_flag(h, sl);\n                }\n            }\n            if (eos || sl->mb_y >= h->mb_height) {\n                ff_tlog(h->avctx, "slice end %d %d\\n",\n                        get_bits_count(&sl->gb), sl->gb.size_in_bits);\n                er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,\n                             sl->mb_y, ER_MB_END);\n                if (sl->mb_x > lf_x_start)\n                    loop_filter(h, sl, lf_x_start, sl->mb_x);\n                goto finish;\n            }\n        }\n    } else {\n        for (;;) {\n            int ret;\n            if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {\n                av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\\n",\n                       sl->next_slice_idx);\n                return AVERROR_INVALIDDATA;\n            }\n            ret = ff_h264_decode_mb_cavlc(h, sl);\n            if (ret >= 0)\n                ff_h264_hl_decode_mb(h, sl);\n            if (ret >= 0 && FRAME_MBAFF(h)) {\n                sl->mb_y++;\n                ret = ff_h264_decode_mb_cavlc(h, sl);\n                if (ret >= 0)\n                    ff_h264_hl_decode_mb(h, sl);\n                sl->mb_y--;\n            }\n            if (ret < 0) {\n                av_log(h->avctx, AV_LOG_ERROR,\n                       "error while decoding MB %d %d\\n", sl->mb_x, sl->mb_y);\n                er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,\n                             sl->mb_y, ER_MB_ERROR);\n                return ret;\n            }\n            if (++sl->mb_x >= h->mb_width) {\n                loop_filter(h, sl, lf_x_start, sl->mb_x);\n                sl->mb_x = lf_x_start = 0;\n                decode_finish_row(h, sl);\n                ++sl->mb_y;\n                if (FIELD_OR_MBAFF_PICTURE(h)) {\n                    ++sl->mb_y;\n                    if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)\n                        predict_field_decoding_flag(h, sl);\n                }\n                if (sl->mb_y >= h->mb_height) {\n                    ff_tlog(h->avctx, "slice end %d %d\\n",\n                            get_bits_count(&sl->gb), sl->gb.size_in_bits);\n                    if (get_bits_left(&sl->gb) == 0) {\n                        er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,\n                                     sl->mb_x - 1, sl->mb_y, ER_MB_END);\n                        goto finish;\n                    } else {\n                        er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,\n                                     sl->mb_x - 1, sl->mb_y, ER_MB_END);\n                        return AVERROR_INVALIDDATA;\n                    }\n                }\n            }\n            if (get_bits_left(&sl->gb) <= 0 && sl->mb_skip_run <= 0) {\n                ff_tlog(h->avctx, "slice end %d %d\\n",\n                        get_bits_count(&sl->gb), sl->gb.size_in_bits);\n                if (get_bits_left(&sl->gb) == 0) {\n                    er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,\n                                 sl->mb_x - 1, sl->mb_y, ER_MB_END);\n                    if (sl->mb_x > lf_x_start)\n                        loop_filter(h, sl, lf_x_start, sl->mb_x);\n                    goto finish;\n                } else {\n                    er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,\n                                 sl->mb_y, ER_MB_ERROR);\n                    return AVERROR_INVALIDDATA;\n                }\n            }\n        }\n    }\nfinish:\n    sl->deblocking_filter = orig_deblock;\n    return 0;\n}', 'int ff_h264_decode_mb_cabac(const H264Context *h, H264SliceContext *sl)\n{\n    const SPS *sps = h->ps.sps;\n    int mb_xy;\n    int mb_type, partition_count, cbp = 0;\n    int dct8x8_allowed= h->ps.pps->transform_8x8_mode;\n    int decode_chroma = sps->chroma_format_idc == 1 || sps->chroma_format_idc == 2;\n    const int pixel_shift = h->pixel_shift;\n    mb_xy = sl->mb_xy = sl->mb_x + sl->mb_y*h->mb_stride;\n    ff_tlog(h->avctx, "pic:%d mb:%d/%d\\n", h->frame_num, sl->mb_x, sl->mb_y);\n    if (sl->slice_type_nos != AV_PICTURE_TYPE_I) {\n        int skip;\n        if (FRAME_MBAFF(h) && (sl->mb_y & 1) == 1 && sl->prev_mb_skipped)\n            skip = sl->next_mb_skipped;\n        else\n            skip = decode_cabac_mb_skip(h, sl, sl->mb_x, sl->mb_y );\n        if( skip ) {\n            if (FRAME_MBAFF(h) && (sl->mb_y & 1) == 0) {\n                h->cur_pic.mb_type[mb_xy] = MB_TYPE_SKIP;\n                sl->next_mb_skipped = decode_cabac_mb_skip(h, sl, sl->mb_x, sl->mb_y+1 );\n                if(!sl->next_mb_skipped)\n                    sl->mb_mbaff = sl->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h, sl);\n            }\n            decode_mb_skip(h, sl);\n            h->cbp_table[mb_xy] = 0;\n            h->chroma_pred_mode_table[mb_xy] = 0;\n            sl->last_qscale_diff = 0;\n            return 0;\n        }\n    }\n    if (FRAME_MBAFF(h)) {\n        if ((sl->mb_y & 1) == 0)\n            sl->mb_mbaff =\n            sl->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h, sl);\n    }\n    sl->prev_mb_skipped = 0;\n    fill_decode_neighbors(h, sl, -(MB_FIELD(sl)));\n    if (sl->slice_type_nos == AV_PICTURE_TYPE_B) {\n        int ctx = 0;\n        assert(sl->slice_type_nos == AV_PICTURE_TYPE_B);\n        if (!IS_DIRECT(sl->left_type[LTOP] - 1))\n            ctx++;\n        if (!IS_DIRECT(sl->top_type - 1))\n            ctx++;\n        if( !get_cabac_noinline( &sl->cabac, &sl->cabac_state[27+ctx] ) ){\n            mb_type= 0;\n        }else if( !get_cabac_noinline( &sl->cabac, &sl->cabac_state[27+3] ) ) {\n            mb_type= 1 + get_cabac_noinline( &sl->cabac, &sl->cabac_state[27+5] );\n        }else{\n            int bits;\n            bits = get_cabac_noinline( &sl->cabac, &sl->cabac_state[27+4] ) << 3;\n            bits+= get_cabac_noinline( &sl->cabac, &sl->cabac_state[27+5] ) << 2;\n            bits+= get_cabac_noinline( &sl->cabac, &sl->cabac_state[27+5] ) << 1;\n            bits+= get_cabac_noinline( &sl->cabac, &sl->cabac_state[27+5] );\n            if( bits < 8 ){\n                mb_type= bits + 3;\n            }else if( bits == 13 ){\n                mb_type = decode_cabac_intra_mb_type(sl, 32, 0);\n                goto decode_intra_mb;\n            }else if( bits == 14 ){\n                mb_type= 11;\n            }else if( bits == 15 ){\n                mb_type= 22;\n            }else{\n                bits= ( bits<<1 ) + get_cabac_noinline( &sl->cabac, &sl->cabac_state[27+5] );\n                mb_type= bits - 4;\n            }\n        }\n            partition_count = ff_h264_b_mb_type_info[mb_type].partition_count;\n            mb_type         = ff_h264_b_mb_type_info[mb_type].type;\n    } else if (sl->slice_type_nos == AV_PICTURE_TYPE_P) {\n        if( get_cabac_noinline( &sl->cabac, &sl->cabac_state[14] ) == 0 ) {\n            if( get_cabac_noinline( &sl->cabac, &sl->cabac_state[15] ) == 0 ) {\n                mb_type= 3 * get_cabac_noinline( &sl->cabac, &sl->cabac_state[16] );\n            } else {\n                mb_type= 2 - get_cabac_noinline( &sl->cabac, &sl->cabac_state[17] );\n            }\n            partition_count = ff_h264_p_mb_type_info[mb_type].partition_count;\n            mb_type         = ff_h264_p_mb_type_info[mb_type].type;\n        } else {\n            mb_type = decode_cabac_intra_mb_type(sl, 17, 0);\n            goto decode_intra_mb;\n        }\n    } else {\n        mb_type = decode_cabac_intra_mb_type(sl, 3, 1);\n        if (sl->slice_type == AV_PICTURE_TYPE_SI && mb_type)\n            mb_type--;\n        assert(sl->slice_type_nos == AV_PICTURE_TYPE_I);\ndecode_intra_mb:\n        partition_count = 0;\n        cbp                      = ff_h264_i_mb_type_info[mb_type].cbp;\n        sl->intra16x16_pred_mode = ff_h264_i_mb_type_info[mb_type].pred_mode;\n        mb_type                  = ff_h264_i_mb_type_info[mb_type].type;\n    }\n    if (MB_FIELD(sl))\n        mb_type |= MB_TYPE_INTERLACED;\n    h->slice_table[mb_xy] = sl->slice_num;\n    if(IS_INTRA_PCM(mb_type)) {\n        const int mb_size = ff_h264_mb_sizes[sps->chroma_format_idc] *\n                            sps->bit_depth_luma >> 3;\n        const uint8_t *ptr;\n        ptr= sl->cabac.bytestream;\n        if(sl->cabac.low&0x1) ptr--;\n        if(CABAC_BITS==16){\n            if(sl->cabac.low&0x1FF) ptr--;\n        }\n        if ((int) (sl->cabac.bytestream_end - ptr) < mb_size)\n            return -1;\n        sl->intra_pcm_ptr = ptr;\n        ptr += mb_size;\n        ff_init_cabac_decoder(&sl->cabac, ptr, sl->cabac.bytestream_end - ptr);\n        h->cbp_table[mb_xy] = 0xf7ef;\n        h->chroma_pred_mode_table[mb_xy] = 0;\n        h->cur_pic.qscale_table[mb_xy] = 0;\n        memset(h->non_zero_count[mb_xy], 16, 48);\n        h->cur_pic.mb_type[mb_xy] = mb_type;\n        sl->last_qscale_diff = 0;\n        return 0;\n    }\n    fill_decode_caches(h, sl, mb_type);\n    if( IS_INTRA( mb_type ) ) {\n        int i, pred_mode;\n        if( IS_INTRA4x4( mb_type ) ) {\n            if (dct8x8_allowed && get_cabac_noinline(&sl->cabac, &sl->cabac_state[399 + sl->neighbor_transform_size])) {\n                mb_type |= MB_TYPE_8x8DCT;\n                for( i = 0; i < 16; i+=4 ) {\n                    int pred = pred_intra_mode(h, sl, i);\n                    int mode = decode_cabac_mb_intra4x4_pred_mode(sl, pred);\n                    fill_rectangle(&sl->intra4x4_pred_mode_cache[scan8[i]], 2, 2, 8, mode, 1);\n                }\n            } else {\n                for( i = 0; i < 16; i++ ) {\n                    int pred = pred_intra_mode(h, sl, i);\n                    sl->intra4x4_pred_mode_cache[scan8[i]] = decode_cabac_mb_intra4x4_pred_mode(sl, pred);\n                    ff_dlog(h->avctx, "i4x4 pred=%d mode=%d\\n", pred,\n                            sl->intra4x4_pred_mode_cache[scan8[i]]);\n                }\n            }\n            write_back_intra_pred_mode(h, sl);\n            if (ff_h264_check_intra4x4_pred_mode(sl->intra4x4_pred_mode_cache, h->avctx,\n                                                 sl->top_samples_available, sl->left_samples_available) < 0 )\n                return -1;\n        } else {\n            sl->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h->avctx, sl->top_samples_available,\n                                                                     sl->left_samples_available, sl->intra16x16_pred_mode, 0);\n            if (sl->intra16x16_pred_mode < 0) return -1;\n        }\n        if(decode_chroma){\n            h->chroma_pred_mode_table[mb_xy] =\n            pred_mode                        = decode_cabac_mb_chroma_pre_mode(h, sl);\n            pred_mode= ff_h264_check_intra_pred_mode(h->avctx, sl->top_samples_available,\n                                                     sl->left_samples_available, pred_mode, 1 );\n            if( pred_mode < 0 ) return -1;\n            sl->chroma_pred_mode = pred_mode;\n        } else {\n            sl->chroma_pred_mode = DC_128_PRED8x8;\n        }\n    } else if( partition_count == 4 ) {\n        int i, j, sub_partition_count[4], list, ref[2][4];\n        if (sl->slice_type_nos == AV_PICTURE_TYPE_B ) {\n            for( i = 0; i < 4; i++ ) {\n                sl->sub_mb_type[i] = decode_cabac_b_mb_sub_type(sl);\n                sub_partition_count[i] = ff_h264_b_sub_mb_type_info[sl->sub_mb_type[i]].partition_count;\n                sl->sub_mb_type[i]     = ff_h264_b_sub_mb_type_info[sl->sub_mb_type[i]].type;\n            }\n            if (IS_DIRECT(sl->sub_mb_type[0] | sl->sub_mb_type[1] |\n                          sl->sub_mb_type[2] | sl->sub_mb_type[3])) {\n                ff_h264_pred_direct_motion(h, sl, &mb_type);\n                sl->ref_cache[0][scan8[4]] =\n                sl->ref_cache[1][scan8[4]] =\n                sl->ref_cache[0][scan8[12]] =\n                sl->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE;\n                    for( i = 0; i < 4; i++ )\n                        fill_rectangle(&sl->direct_cache[scan8[4*i]], 2, 2, 8, (sl->sub_mb_type[i] >> 1) & 0xFF, 1);\n            }\n        } else {\n            for( i = 0; i < 4; i++ ) {\n                sl->sub_mb_type[i] = decode_cabac_p_mb_sub_type(sl);\n                sub_partition_count[i] = ff_h264_p_sub_mb_type_info[sl->sub_mb_type[i]].partition_count;\n                sl->sub_mb_type[i]     = ff_h264_p_sub_mb_type_info[sl->sub_mb_type[i]].type;\n            }\n        }\n        for( list = 0; list < sl->list_count; list++ ) {\n                for( i = 0; i < 4; i++ ) {\n                    if(IS_DIRECT(sl->sub_mb_type[i])) continue;\n                    if(IS_DIR(sl->sub_mb_type[i], 0, list)){\n                        int rc = sl->ref_count[list] << MB_MBAFF(sl);\n                        if (rc > 1) {\n                            ref[list][i] = decode_cabac_mb_ref(sl, list, 4 * i);\n                            if (ref[list][i] >= (unsigned) rc) {\n                                av_log(h->avctx, AV_LOG_ERROR, "Reference %d >= %d\\n", ref[list][i], rc);\n                                return -1;\n                            }\n                        }else\n                            ref[list][i] = 0;\n                    } else {\n                        ref[list][i] = -1;\n                    }\n                    sl->ref_cache[list][scan8[4 * i] + 1] =\n                    sl->ref_cache[list][scan8[4 * i] + 8] = sl->ref_cache[list][scan8[4 * i] + 9] = ref[list][i];\n                }\n        }\n        if(dct8x8_allowed)\n            dct8x8_allowed = get_dct8x8_allowed(h, sl);\n        for (list = 0; list < sl->list_count; list++) {\n            for(i=0; i<4; i++){\n                sl->ref_cache[list][scan8[4 * i]] = sl->ref_cache[list][scan8[4 * i] + 1];\n                if(IS_DIRECT(sl->sub_mb_type[i])){\n                    fill_rectangle(sl->mvd_cache[list][scan8[4*i]], 2, 2, 8, 0, 2);\n                    continue;\n                }\n                if(IS_DIR(sl->sub_mb_type[i], 0, list) && !IS_DIRECT(sl->sub_mb_type[i])){\n                    const int sub_mb_type= sl->sub_mb_type[i];\n                    const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1;\n                    for(j=0; j<sub_partition_count[i]; j++){\n                        int mpx, mpy;\n                        int mx, my;\n                        const int index= 4*i + block_width*j;\n                        int16_t (* mv_cache)[2] = &sl->mv_cache[list][ scan8[index] ];\n                        uint8_t (* mvd_cache)[2]= &sl->mvd_cache[list][ scan8[index] ];\n                        pred_motion(h, sl, index, block_width, list, sl->ref_cache[list][ scan8[index] ], &mx, &my);\n                        DECODE_CABAC_MB_MVD(sl, list, index)\n                        ff_tlog(h->avctx, "final mv:%d %d\\n", mx, my);\n                        if(IS_SUB_8X8(sub_mb_type)){\n                            mv_cache[ 1 ][0]=\n                            mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx;\n                            mv_cache[ 1 ][1]=\n                            mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my;\n                            mvd_cache[ 1 ][0]=\n                            mvd_cache[ 8 ][0]= mvd_cache[ 9 ][0]= mpx;\n                            mvd_cache[ 1 ][1]=\n                            mvd_cache[ 8 ][1]= mvd_cache[ 9 ][1]= mpy;\n                        }else if(IS_SUB_8X4(sub_mb_type)){\n                            mv_cache[ 1 ][0]= mx;\n                            mv_cache[ 1 ][1]= my;\n                            mvd_cache[ 1 ][0]=  mpx;\n                            mvd_cache[ 1 ][1]= mpy;\n                        }else if(IS_SUB_4X8(sub_mb_type)){\n                            mv_cache[ 8 ][0]= mx;\n                            mv_cache[ 8 ][1]= my;\n                            mvd_cache[ 8 ][0]= mpx;\n                            mvd_cache[ 8 ][1]= mpy;\n                        }\n                        mv_cache[ 0 ][0]= mx;\n                        mv_cache[ 0 ][1]= my;\n                        mvd_cache[ 0 ][0]= mpx;\n                        mvd_cache[ 0 ][1]= mpy;\n                    }\n                }else{\n                    fill_rectangle(sl->mv_cache [list][ scan8[4*i] ], 2, 2, 8, 0, 4);\n                    fill_rectangle(sl->mvd_cache[list][ scan8[4*i] ], 2, 2, 8, 0, 2);\n                }\n            }\n        }\n    } else if( IS_DIRECT(mb_type) ) {\n        ff_h264_pred_direct_motion(h, sl, &mb_type);\n        fill_rectangle(sl->mvd_cache[0][scan8[0]], 4, 4, 8, 0, 2);\n        fill_rectangle(sl->mvd_cache[1][scan8[0]], 4, 4, 8, 0, 2);\n        dct8x8_allowed &= sps->direct_8x8_inference_flag;\n    } else {\n        int list, i;\n        if(IS_16X16(mb_type)){\n            for (list = 0; list < sl->list_count; list++) {\n                if(IS_DIR(mb_type, 0, list)){\n                    int ref, rc = sl->ref_count[list] << MB_MBAFF(sl);\n                    if (rc > 1) {\n                        ref= decode_cabac_mb_ref(sl, list, 0);\n                        if (ref >= (unsigned) rc) {\n                            av_log(h->avctx, AV_LOG_ERROR, "Reference %d >= %d\\n", ref, rc);\n                            return -1;\n                        }\n                    }else\n                        ref=0;\n                    fill_rectangle(&sl->ref_cache[list][ scan8[0] ], 4, 4, 8, ref, 1);\n                }\n            }\n            for (list = 0; list < sl->list_count; list++) {\n                if(IS_DIR(mb_type, 0, list)){\n                    int mx,my,mpx,mpy;\n                    pred_motion(h, sl, 0, 4, list, sl->ref_cache[list][ scan8[0] ], &mx, &my);\n                    DECODE_CABAC_MB_MVD(sl, list, 0)\n                    ff_tlog(h->avctx, "final mv:%d %d\\n", mx, my);\n                    fill_rectangle(sl->mvd_cache[list][ scan8[0] ], 4, 4, 8, pack8to16(mpx,mpy), 2);\n                    fill_rectangle(sl->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4);\n                }\n            }\n        }\n        else if(IS_16X8(mb_type)){\n            for (list = 0; list < sl->list_count; list++) {\n                    for(i=0; i<2; i++){\n                        if(IS_DIR(mb_type, i, list)){\n                            int ref, rc = sl->ref_count[list] << MB_MBAFF(sl);\n                            if (rc > 1) {\n                                ref= decode_cabac_mb_ref(sl, list, 8 * i);\n                                if (ref >= (unsigned) rc) {\n                                    av_log(h->avctx, AV_LOG_ERROR, "Reference %d >= %d\\n", ref, rc);\n                                    return -1;\n                                }\n                            }else\n                                ref=0;\n                            fill_rectangle(&sl->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, ref, 1);\n                        }else\n                            fill_rectangle(&sl->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, (LIST_NOT_USED&0xFF), 1);\n                    }\n            }\n            for (list = 0; list < sl->list_count; list++) {\n                for(i=0; i<2; i++){\n                    if(IS_DIR(mb_type, i, list)){\n                        int mx,my,mpx,mpy;\n                        pred_16x8_motion(h, sl, 8*i, list, sl->ref_cache[list][scan8[0] + 16*i], &mx, &my);\n                        DECODE_CABAC_MB_MVD(sl, list, 8*i)\n                        ff_tlog(h->avctx, "final mv:%d %d\\n", mx, my);\n                        fill_rectangle(sl->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack8to16(mpx,mpy), 2);\n                        fill_rectangle(sl->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx,my), 4);\n                    }else{\n                        fill_rectangle(sl->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 2);\n                        fill_rectangle(sl->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 4);\n                    }\n                }\n            }\n        }else{\n            assert(IS_8X16(mb_type));\n            for (list = 0; list < sl->list_count; list++) {\n                    for(i=0; i<2; i++){\n                        if(IS_DIR(mb_type, i, list)){\n                            int ref, rc = sl->ref_count[list] << MB_MBAFF(sl);\n                            if (rc > 1) {\n                                ref = decode_cabac_mb_ref(sl, list, 4 * i);\n                                if (ref >= (unsigned) rc) {\n                                    av_log(h->avctx, AV_LOG_ERROR, "Reference %d >= %d\\n", ref, rc);\n                                    return -1;\n                                }\n                            }else\n                                ref=0;\n                            fill_rectangle(&sl->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, ref, 1);\n                        }else\n                            fill_rectangle(&sl->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, (LIST_NOT_USED&0xFF), 1);\n                    }\n            }\n            for (list = 0; list < sl->list_count; list++) {\n                for(i=0; i<2; i++){\n                    if(IS_DIR(mb_type, i, list)){\n                        int mx,my,mpx,mpy;\n                        pred_8x16_motion(h, sl, i*4, list, sl->ref_cache[list][ scan8[0] + 2*i ], &mx, &my);\n                        DECODE_CABAC_MB_MVD(sl, list, 4*i)\n                        ff_tlog(h->avctx, "final mv:%d %d\\n", mx, my);\n                        fill_rectangle(sl->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack8to16(mpx,mpy), 2);\n                        fill_rectangle(sl->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx,my), 4);\n                    }else{\n                        fill_rectangle(sl->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 2);\n                        fill_rectangle(sl->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 4);\n                    }\n                }\n            }\n        }\n    }\n   if( IS_INTER( mb_type ) ) {\n        h->chroma_pred_mode_table[mb_xy] = 0;\n        write_back_motion(h, sl, mb_type);\n   }\n    if( !IS_INTRA16x16( mb_type ) ) {\n        cbp  = decode_cabac_mb_cbp_luma(sl);\n        if(decode_chroma)\n            cbp |= decode_cabac_mb_cbp_chroma(sl) << 4;\n    }\n    h->cbp_table[mb_xy] = sl->cbp = cbp;\n    if( dct8x8_allowed && (cbp&15) && !IS_INTRA( mb_type ) ) {\n        mb_type |= MB_TYPE_8x8DCT * get_cabac_noinline(&sl->cabac, &sl->cabac_state[399 + sl->neighbor_transform_size]);\n    }\n    if (CHROMA444(h) && IS_8x8DCT(mb_type)){\n        int i;\n        uint8_t *nnz_cache = sl->non_zero_count_cache;\n        for (i = 0; i < 2; i++){\n            if (sl->left_type[LEFT(i)] && !IS_8x8DCT(sl->left_type[LEFT(i)])) {\n                nnz_cache[3+8* 1 + 2*8*i]=\n                nnz_cache[3+8* 2 + 2*8*i]=\n                nnz_cache[3+8* 6 + 2*8*i]=\n                nnz_cache[3+8* 7 + 2*8*i]=\n                nnz_cache[3+8*11 + 2*8*i]=\n                nnz_cache[3+8*12 + 2*8*i]= IS_INTRA(mb_type) ? 64 : 0;\n            }\n        }\n        if (sl->top_type && !IS_8x8DCT(sl->top_type)){\n            uint32_t top_empty = CABAC(h) && !IS_INTRA(mb_type) ? 0 : 0x40404040;\n            AV_WN32A(&nnz_cache[4+8* 0], top_empty);\n            AV_WN32A(&nnz_cache[4+8* 5], top_empty);\n            AV_WN32A(&nnz_cache[4+8*10], top_empty);\n        }\n    }\n    h->cur_pic.mb_type[mb_xy] = mb_type;\n    if( cbp || IS_INTRA16x16( mb_type ) ) {\n        const uint8_t *scan, *scan8x8;\n        const uint32_t *qmul;\n        if(IS_INTERLACED(mb_type)){\n            scan8x8 = sl->qscale ? h->field_scan8x8 : h->field_scan8x8_q0;\n            scan    = sl->qscale ? h->field_scan : h->field_scan_q0;\n        }else{\n            scan8x8 = sl->qscale ? h->zigzag_scan8x8 : h->zigzag_scan8x8_q0;\n            scan    = sl->qscale ? h->zigzag_scan : h->zigzag_scan_q0;\n        }\n        if(get_cabac_noinline( &sl->cabac, &sl->cabac_state[60 + (sl->last_qscale_diff != 0)])){\n            int val = 1;\n            int ctx= 2;\n            const int max_qp = 51 + 6*(sps->bit_depth_luma-8);\n            while( get_cabac_noinline( &sl->cabac, &sl->cabac_state[60 + ctx] ) ) {\n                ctx= 3;\n                val++;\n                if(val > 2*max_qp){\n                    av_log(h->avctx, AV_LOG_ERROR, "cabac decode of qscale diff failed at %d %d\\n", sl->mb_x, sl->mb_y);\n                    return -1;\n                }\n            }\n            if( val&0x01 )\n                val=   (val + 1)>>1 ;\n            else\n                val= -((val + 1)>>1);\n            sl->last_qscale_diff = val;\n            sl->qscale += val;\n            if (((unsigned)sl->qscale) > max_qp){\n                if (sl->qscale < 0) sl->qscale += max_qp + 1;\n                else                sl->qscale -= max_qp + 1;\n            }\n            sl->chroma_qp[0] = get_chroma_qp(h, 0, sl->qscale);\n            sl->chroma_qp[1] = get_chroma_qp(h, 1, sl->qscale);\n        }else\n            sl->last_qscale_diff=0;\n        decode_cabac_luma_residual(h, sl, scan, scan8x8, pixel_shift, mb_type, cbp, 0);\n        if (CHROMA444(h)) {\n            decode_cabac_luma_residual(h, sl, scan, scan8x8, pixel_shift, mb_type, cbp, 1);\n            decode_cabac_luma_residual(h, sl, scan, scan8x8, pixel_shift, mb_type, cbp, 2);\n        } else if (CHROMA422(h)) {\n            if( cbp&0x30 ){\n                int c;\n                for (c = 0; c < 2; c++)\n                    decode_cabac_residual_dc_422(h, sl, sl->mb + ((256 + 16*16*c) << pixel_shift), 3,\n                                                 CHROMA_DC_BLOCK_INDEX + c,\n                                                 ff_h264_chroma422_dc_scan, 8);\n            }\n            if( cbp&0x20 ) {\n                int c, i, i8x8;\n                for( c = 0; c < 2; c++ ) {\n                    int16_t *mb = sl->mb + (16*(16 + 16*c) << pixel_shift);\n                    qmul = h->ps.pps->dequant4_coeff[c+1+(IS_INTRA( mb_type ) ? 0:3)][sl->chroma_qp[c]];\n                    for (i8x8 = 0; i8x8 < 2; i8x8++) {\n                        for (i = 0; i < 4; i++) {\n                            const int index = 16 + 16 * c + 8*i8x8 + i;\n                            decode_cabac_residual_nondc(h, sl, mb, 4, index, scan + 1, qmul, 15);\n                            mb += 16<<pixel_shift;\n                        }\n                    }\n                }\n            } else {\n                fill_rectangle(&sl->non_zero_count_cache[scan8[16]], 4, 4, 8, 0, 1);\n                fill_rectangle(&sl->non_zero_count_cache[scan8[32]], 4, 4, 8, 0, 1);\n            }\n        } else   {\n            if( cbp&0x30 ){\n                int c;\n                for (c = 0; c < 2; c++)\n                    decode_cabac_residual_dc(h, sl, sl->mb + ((256 + 16 * 16 * c) << pixel_shift),\n                                             3, CHROMA_DC_BLOCK_INDEX + c, ff_h264_chroma_dc_scan, 4);\n            }\n            if( cbp&0x20 ) {\n                int c, i;\n                for( c = 0; c < 2; c++ ) {\n                    qmul = h->ps.pps->dequant4_coeff[c+1+(IS_INTRA( mb_type ) ? 0:3)][sl->chroma_qp[c]];\n                    for( i = 0; i < 4; i++ ) {\n                        const int index = 16 + 16 * c + i;\n                        decode_cabac_residual_nondc(h, sl, sl->mb + (16*index << pixel_shift), 4, index, scan + 1, qmul, 15);\n                    }\n                }\n            } else {\n                fill_rectangle(&sl->non_zero_count_cache[scan8[16]], 4, 4, 8, 0, 1);\n                fill_rectangle(&sl->non_zero_count_cache[scan8[32]], 4, 4, 8, 0, 1);\n            }\n        }\n    } else {\n        fill_rectangle(&sl->non_zero_count_cache[scan8[ 0]], 4, 4, 8, 0, 1);\n        fill_rectangle(&sl->non_zero_count_cache[scan8[16]], 4, 4, 8, 0, 1);\n        fill_rectangle(&sl->non_zero_count_cache[scan8[32]], 4, 4, 8, 0, 1);\n        sl->last_qscale_diff = 0;\n    }\n    h->cur_pic.qscale_table[mb_xy] = sl->qscale;\n    write_back_non_zero_count(h, sl);\n    return 0;\n}', 'int ff_h264_check_intra_pred_mode(void *logctx, int top_samples_available,\n                                  int left_samples_available,\n                                  int mode, int is_chroma)\n{\n    static const int8_t top[4]  = { LEFT_DC_PRED8x8, 1, -1, -1 };\n    static const int8_t left[5] = { TOP_DC_PRED8x8, -1,  2, -1, DC_128_PRED8x8 };\n    if (mode > 3U) {\n        av_log(logctx, AV_LOG_ERROR,\n               "out of range intra chroma pred mode\\n");\n        return AVERROR_INVALIDDATA;\n    }\n    if (!(top_samples_available & 0x8000)) {\n        mode = top[mode];\n        if (mode < 0) {\n            av_log(logctx, AV_LOG_ERROR,\n                   "top block unavailable for requested intra mode\\n");\n            return AVERROR_INVALIDDATA;\n        }\n    }\n    if ((left_samples_available & 0x8080) != 0x8080) {\n        mode = left[mode];\n        if (is_chroma && (left_samples_available & 0x8080)) {\n            mode = ALZHEIMER_DC_L0T_PRED8x8 +\n                   (!(left_samples_available & 0x8000)) +\n                   2 * (mode == DC_128_PRED8x8);\n        }\n        if (mode < 0) {\n            av_log(logctx, AV_LOG_ERROR,\n                   "left block unavailable for requested intra mode\\n");\n            return AVERROR_INVALIDDATA;\n        }\n    }\n    return mode;\n}']