libavcodec/h264_direct.c:364: error: Uninitialized Value
  The value read from ref[_] was never initialized.

libavcodec/h264_direct.c:364:32: 
362.                         const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
363.                         if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
364.                             if(ref[0] == 0)
                                    ^
365.                                 AV_ZERO32(h->mv_cache[0][scan8[i8*4+i4]]);
366.                             if(ref[1] == 0)

static void pred_spatial_direct_motion(H264Context * const h, int *mb_type){
    MpegEncContext * const s = &h->s;
    int b8_stride = h->b8_stride;
    int b4_stride = h->b_stride;
    int mb_xy = h->mb_xy;
    int mb_type_col[2];
    const int16_t (*l1mv0)[2], (*l1mv1)[2];
    const int8_t *l1ref0, *l1ref1;
    const int is_b8x8 = IS_8X8(*mb_type);
    unsigned int sub_mb_type= MB_TYPE_L0L1;
    int i8, i4;
    int ref[2];
    int mv[2];
    int list;
    assert(h->ref_list[1][0].reference&3);
#define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16|MB_TYPE_INTRA4x4|MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM)
    for(list=0; list<2; list++){
        int left_ref = h->ref_cache[list][scan8[0] - 1];
        int top_ref  = h->ref_cache[list][scan8[0] - 8];
        int refc = h->ref_cache[list][scan8[0] - 8 + 4];
        const int16_t *C= h->mv_cache[list][ scan8[0] - 8 + 4];
        if(refc == PART_NOT_AVAILABLE){
            refc = h->ref_cache[list][scan8[0] - 8 - 1];
            C    = h-> mv_cache[list][scan8[0] - 8 - 1];
        }
        ref[list] = FFMIN3((unsigned)left_ref, (unsigned)top_ref, (unsigned)refc);
        if(ref[list] >= 0){
            const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ];
            const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];
            int match_count= (left_ref==ref[list]) + (top_ref==ref[list]) + (refc==ref[list]);
            if(match_count > 1){
                mv[list]= pack16to32(mid_pred(A[0], B[0], C[0]),
                                     mid_pred(A[1], B[1], C[1]) );
            }else {
                assert(match_count==1);
                if(left_ref==ref[list]){
                    mv[list]= AV_RN32A(A);
                }else if(top_ref==ref[list]){
                    mv[list]= AV_RN32A(B);
                }else{
                    mv[list]= AV_RN32A(C);
                }
            }
        }else{
            int mask= ~(MB_TYPE_L0 << (2*list));
            mv[list] = 0;
            ref[list] = -1;
            if(!is_b8x8)
                *mb_type &= mask;
            sub_mb_type &= mask;
        }
    }
    if(ref[0] < 0 && ref[1] < 0){
        ref[0] = ref[1] = 0;
        if(!is_b8x8)
            *mb_type |= MB_TYPE_L0L1;
        sub_mb_type |= MB_TYPE_L0L1;
    }
    if(!(is_b8x8|mv[0]|mv[1])){
        fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
        fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
        fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);
        fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, 0, 4);
        *mb_type= (*mb_type & ~(MB_TYPE_8x8|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_P1L0|MB_TYPE_P1L1))|MB_TYPE_16x16|MB_TYPE_DIRECT2;
        return;
    }
    if(IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])){
        if(!IS_INTERLACED(*mb_type)){
            mb_xy= s->mb_x + ((s->mb_y&~1) + h->col_parity)*s->mb_stride;
            b8_stride = 0;
        }else{
            mb_xy += h->col_fieldoff;
        }
        goto single_col;
    }else{
        if(IS_INTERLACED(*mb_type)){
            mb_xy= s->mb_x + (s->mb_y&~1)*s->mb_stride;
            mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy];
            mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + s->mb_stride];
            b8_stride *= 3;
            b4_stride *= 6;
            sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2;
            if(    (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)
                && (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA)
                && !is_b8x8){
                *mb_type   |= MB_TYPE_16x8 |MB_TYPE_DIRECT2;
            }else{
                *mb_type   |= MB_TYPE_8x8;
            }
        }else{
single_col:
            mb_type_col[0] =
            mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy];
            sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2;
            if(!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)){
                *mb_type   |= MB_TYPE_16x16|MB_TYPE_DIRECT2;
            }else if(!is_b8x8 && (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16))){
                *mb_type   |= MB_TYPE_DIRECT2 | (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16));
            }else{
                if(!h->sps.direct_8x8_inference_flag){
                    sub_mb_type += (MB_TYPE_8x8-MB_TYPE_16x16);
                }
                *mb_type   |= MB_TYPE_8x8;
            }
        }
    }
    l1mv0  = &h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]];
    l1mv1  = &h->ref_list[1][0].motion_val[1][h->mb2b_xy [mb_xy]];
    l1ref0 = &h->ref_list[1][0].ref_index [0][h->mb2b8_xy[mb_xy]];
    l1ref1 = &h->ref_list[1][0].ref_index [1][h->mb2b8_xy[mb_xy]];
    if(!b8_stride){
        if(s->mb_y&1){
            l1ref0 += h->b8_stride;
            l1ref1 += h->b8_stride;
            l1mv0  +=  2*b4_stride;
            l1mv1  +=  2*b4_stride;
        }
    }
        if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
            int n=0;
            for(i8=0; i8<4; i8++){
                int x8 = i8&1;
                int y8 = i8>>1;
                int xy8 = x8+y8*b8_stride;
                int xy4 = 3*x8+y8*b4_stride;
                int a,b;
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
                    continue;
                h->sub_mb_type[i8] = sub_mb_type;
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
                if(!IS_INTRA(mb_type_col[y8]) && !h->ref_list[1][0].long_ref
                   && (   (l1ref0[xy8] == 0 && FFABS(l1mv0[xy4][0]) <= 1 && FFABS(l1mv0[xy4][1]) <= 1)
                       || (l1ref0[xy8]  < 0 && l1ref1[xy8] == 0 && FFABS(l1mv1[xy4][0]) <= 1 && FFABS(l1mv1[xy4][1]) <= 1))){
                    a=b=0;
                    if(ref[0] > 0)
                        a= mv[0];
                    if(ref[1] > 0)
                        b= mv[1];
                    n++;
                }else{
                    a= mv[0];
                    b= mv[1];
                }
                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, a, 4);
                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, b, 4);
            }
            if(!is_b8x8 && !(n&3))
                *mb_type= (*mb_type & ~(MB_TYPE_8x8|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_P1L0|MB_TYPE_P1L1))|MB_TYPE_16x16|MB_TYPE_DIRECT2;
        }else if(IS_16X16(*mb_type)){
            int a,b;
            fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
            fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
            if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref
               && (   (l1ref0[0] == 0 && FFABS(l1mv0[0][0]) <= 1 && FFABS(l1mv0[0][1]) <= 1)
                   || (l1ref0[0]  < 0 && l1ref1[0] == 0 && FFABS(l1mv1[0][0]) <= 1 && FFABS(l1mv1[0][1]) <= 1
                       && h->x264_build>33U))){
                a=b=0;
                if(ref[0] > 0)
                    a= mv[0];
                if(ref[1] > 0)
                    b= mv[1];
            }else{
                a= mv[0];
                b= mv[1];
            }
            fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, a, 4);
            fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, b, 4);
        }else{
            int n=0;
            for(i8=0; i8<4; i8++){
                const int x8 = i8&1;
                const int y8 = i8>>1;
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
                    continue;
                h->sub_mb_type[i8] = sub_mb_type;
                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, mv[0], 4);
                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, mv[1], 4);
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
                if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref && (   l1ref0[x8 + y8*b8_stride] == 0
                                              || (l1ref0[x8 + y8*b8_stride] < 0 && l1ref1[x8 + y8*b8_stride] == 0
                                                  && h->x264_build>33U))){
                    const int16_t (*l1mv)[2]= l1ref0[x8 + y8*b8_stride] == 0 ? l1mv0 : l1mv1;
                    if(IS_SUB_8X8(sub_mb_type)){
                        const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride];
                        if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
                            if(ref[0] == 0)
                                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
                            if(ref[1] == 0)
                                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
                            n+=4;
                        }
                    }else{
                        int m=0;
                    for(i4=0; i4<4; i4++){
                        const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
                        if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
                            if(ref[0] == 0)
                                AV_ZERO32(h->mv_cache[0][scan8[i8*4+i4]]);
                            if(ref[1] == 0)
                                AV_ZERO32(h->mv_cache[1][scan8[i8*4+i4]]);
                            m++;
                        }
                    }
                    if(!(m&3))
                        h->sub_mb_type[i8]+= MB_TYPE_16x16 - MB_TYPE_8x8;
                    n+=m;
                    }
                }
            }
            if(!is_b8x8 && !(n&15))
                *mb_type= (*mb_type & ~(MB_TYPE_8x8|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_P1L0|MB_TYPE_P1L1))|MB_TYPE_16x16|MB_TYPE_DIRECT2;
        }
}
['static void pred_spatial_direct_motion(H264Context * const h, int *mb_type){\n    MpegEncContext * const s = &h->s;\n    int b8_stride = h->b8_stride;\n    int b4_stride = h->b_stride;\n    int mb_xy = h->mb_xy;\n    int mb_type_col[2];\n    const int16_t (*l1mv0)[2], (*l1mv1)[2];\n    const int8_t *l1ref0, *l1ref1;\n    const int is_b8x8 = IS_8X8(*mb_type);\n    unsigned int sub_mb_type= MB_TYPE_L0L1;\n    int i8, i4;\n    int ref[2];\n    int mv[2];\n    int list;\n    assert(h->ref_list[1][0].reference&3);\n#define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16|MB_TYPE_INTRA4x4|MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM)\n    for(list=0; list<2; list++){\n        int left_ref = h->ref_cache[list][scan8[0] - 1];\n        int top_ref  = h->ref_cache[list][scan8[0] - 8];\n        int refc = h->ref_cache[list][scan8[0] - 8 + 4];\n        const int16_t *C= h->mv_cache[list][ scan8[0] - 8 + 4];\n        if(refc == PART_NOT_AVAILABLE){\n            refc = h->ref_cache[list][scan8[0] - 8 - 1];\n            C    = h-> mv_cache[list][scan8[0] - 8 - 1];\n        }\n        ref[list] = FFMIN3((unsigned)left_ref, (unsigned)top_ref, (unsigned)refc);\n        if(ref[list] >= 0){\n            const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ];\n            const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];\n            int match_count= (left_ref==ref[list]) + (top_ref==ref[list]) + (refc==ref[list]);\n            if(match_count > 1){\n                mv[list]= pack16to32(mid_pred(A[0], B[0], C[0]),\n                                     mid_pred(A[1], B[1], C[1]) );\n            }else {\n                assert(match_count==1);\n                if(left_ref==ref[list]){\n                    mv[list]= AV_RN32A(A);\n                }else if(top_ref==ref[list]){\n                    mv[list]= AV_RN32A(B);\n                }else{\n                    mv[list]= AV_RN32A(C);\n                }\n            }\n        }else{\n            int mask= ~(MB_TYPE_L0 << (2*list));\n            mv[list] = 0;\n            ref[list] = -1;\n            if(!is_b8x8)\n                *mb_type &= mask;\n            sub_mb_type &= mask;\n        }\n    }\n    if(ref[0] < 0 && ref[1] < 0){\n        ref[0] = ref[1] = 0;\n        if(!is_b8x8)\n            *mb_type |= MB_TYPE_L0L1;\n        sub_mb_type |= MB_TYPE_L0L1;\n    }\n    if(!(is_b8x8|mv[0]|mv[1])){\n        fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);\n        fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);\n        fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);\n        fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, 0, 4);\n        *mb_type= (*mb_type & ~(MB_TYPE_8x8|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_P1L0|MB_TYPE_P1L1))|MB_TYPE_16x16|MB_TYPE_DIRECT2;\n        return;\n    }\n    if(IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])){\n        if(!IS_INTERLACED(*mb_type)){\n            mb_xy= s->mb_x + ((s->mb_y&~1) + h->col_parity)*s->mb_stride;\n            b8_stride = 0;\n        }else{\n            mb_xy += h->col_fieldoff;\n        }\n        goto single_col;\n    }else{\n        if(IS_INTERLACED(*mb_type)){\n            mb_xy= s->mb_x + (s->mb_y&~1)*s->mb_stride;\n            mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy];\n            mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + s->mb_stride];\n            b8_stride *= 3;\n            b4_stride *= 6;\n            sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2;\n            if(    (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)\n                && (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA)\n                && !is_b8x8){\n                *mb_type   |= MB_TYPE_16x8 |MB_TYPE_DIRECT2;\n            }else{\n                *mb_type   |= MB_TYPE_8x8;\n            }\n        }else{\nsingle_col:\n            mb_type_col[0] =\n            mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy];\n            sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2;\n            if(!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)){\n                *mb_type   |= MB_TYPE_16x16|MB_TYPE_DIRECT2;\n            }else if(!is_b8x8 && (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16))){\n                *mb_type   |= MB_TYPE_DIRECT2 | (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16));\n            }else{\n                if(!h->sps.direct_8x8_inference_flag){\n                    sub_mb_type += (MB_TYPE_8x8-MB_TYPE_16x16);\n                }\n                *mb_type   |= MB_TYPE_8x8;\n            }\n        }\n    }\n    l1mv0  = &h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]];\n    l1mv1  = &h->ref_list[1][0].motion_val[1][h->mb2b_xy [mb_xy]];\n    l1ref0 = &h->ref_list[1][0].ref_index [0][h->mb2b8_xy[mb_xy]];\n    l1ref1 = &h->ref_list[1][0].ref_index [1][h->mb2b8_xy[mb_xy]];\n    if(!b8_stride){\n        if(s->mb_y&1){\n            l1ref0 += h->b8_stride;\n            l1ref1 += h->b8_stride;\n            l1mv0  +=  2*b4_stride;\n            l1mv1  +=  2*b4_stride;\n        }\n    }\n        if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){\n            int n=0;\n            for(i8=0; i8<4; i8++){\n                int x8 = i8&1;\n                int y8 = i8>>1;\n                int xy8 = x8+y8*b8_stride;\n                int xy4 = 3*x8+y8*b4_stride;\n                int a,b;\n                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))\n                    continue;\n                h->sub_mb_type[i8] = sub_mb_type;\n                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);\n                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);\n                if(!IS_INTRA(mb_type_col[y8]) && !h->ref_list[1][0].long_ref\n                   && (   (l1ref0[xy8] == 0 && FFABS(l1mv0[xy4][0]) <= 1 && FFABS(l1mv0[xy4][1]) <= 1)\n                       || (l1ref0[xy8]  < 0 && l1ref1[xy8] == 0 && FFABS(l1mv1[xy4][0]) <= 1 && FFABS(l1mv1[xy4][1]) <= 1))){\n                    a=b=0;\n                    if(ref[0] > 0)\n                        a= mv[0];\n                    if(ref[1] > 0)\n                        b= mv[1];\n                    n++;\n                }else{\n                    a= mv[0];\n                    b= mv[1];\n                }\n                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, a, 4);\n                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, b, 4);\n            }\n            if(!is_b8x8 && !(n&3))\n                *mb_type= (*mb_type & ~(MB_TYPE_8x8|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_P1L0|MB_TYPE_P1L1))|MB_TYPE_16x16|MB_TYPE_DIRECT2;\n        }else if(IS_16X16(*mb_type)){\n            int a,b;\n            fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);\n            fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);\n            if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref\n               && (   (l1ref0[0] == 0 && FFABS(l1mv0[0][0]) <= 1 && FFABS(l1mv0[0][1]) <= 1)\n                   || (l1ref0[0]  < 0 && l1ref1[0] == 0 && FFABS(l1mv1[0][0]) <= 1 && FFABS(l1mv1[0][1]) <= 1\n                       && h->x264_build>33U))){\n                a=b=0;\n                if(ref[0] > 0)\n                    a= mv[0];\n                if(ref[1] > 0)\n                    b= mv[1];\n            }else{\n                a= mv[0];\n                b= mv[1];\n            }\n            fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, a, 4);\n            fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, b, 4);\n        }else{\n            int n=0;\n            for(i8=0; i8<4; i8++){\n                const int x8 = i8&1;\n                const int y8 = i8>>1;\n                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))\n                    continue;\n                h->sub_mb_type[i8] = sub_mb_type;\n                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, mv[0], 4);\n                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, mv[1], 4);\n                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);\n                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);\n                if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref && (   l1ref0[x8 + y8*b8_stride] == 0\n                                              || (l1ref0[x8 + y8*b8_stride] < 0 && l1ref1[x8 + y8*b8_stride] == 0\n                                                  && h->x264_build>33U))){\n                    const int16_t (*l1mv)[2]= l1ref0[x8 + y8*b8_stride] == 0 ? l1mv0 : l1mv1;\n                    if(IS_SUB_8X8(sub_mb_type)){\n                        const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride];\n                        if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){\n                            if(ref[0] == 0)\n                                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);\n                            if(ref[1] == 0)\n                                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);\n                            n+=4;\n                        }\n                    }else{\n                        int m=0;\n                    for(i4=0; i4<4; i4++){\n                        const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];\n                        if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){\n                            if(ref[0] == 0)\n                                AV_ZERO32(h->mv_cache[0][scan8[i8*4+i4]]);\n                            if(ref[1] == 0)\n                                AV_ZERO32(h->mv_cache[1][scan8[i8*4+i4]]);\n                            m++;\n                        }\n                    }\n                    if(!(m&3))\n                        h->sub_mb_type[i8]+= MB_TYPE_16x16 - MB_TYPE_8x8;\n                    n+=m;\n                    }\n                }\n            }\n            if(!is_b8x8 && !(n&15))\n                *mb_type= (*mb_type & ~(MB_TYPE_8x8|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_P1L0|MB_TYPE_P1L1))|MB_TYPE_16x16|MB_TYPE_DIRECT2;\n        }\n}']