libavcodec/h264_direct.c:360: error: Uninitialized Value
  The value read from mv[_] was never initialized.

libavcodec/h264_direct.c:360:21: 
358.                     a = mv[0];
359.                 if (ref[1] > 0)
360.                     b = mv[1];
                         ^
361.                 n++;
362.             } else {

static void pred_spatial_direct_motion(H264Context *const h, int *mb_type)
{
    int b8_stride = 2;
    int b4_stride = h->b_stride;
    int mb_xy = h->mb_xy, mb_y = h->mb_y;
    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);
    await_reference_mb_row(h, &h->ref_list[1][0],
                           h->mb_y + !!IS_INTERLACED(*mb_type));
#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_y  = (h->mb_y & ~1) + h->col_parity;
            mb_xy = h->mb_x +
                    ((h->mb_y & ~1) + h->col_parity) * h->mb_stride;
            b8_stride = 0;
        } else {
            mb_y  += h->col_fieldoff;
            mb_xy += h->mb_stride * h->col_fieldoff;
        }
        goto single_col;
    } else {
        if (IS_INTERLACED(*mb_type)) {
            mb_y           =  h->mb_y & ~1;
            mb_xy          = (h->mb_y & ~1) * h->mb_stride + h->mb_x;
            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 + h->mb_stride];
            b8_stride      = 2 + 4 * h->mb_stride;
            b4_stride     *= 6;
            if (IS_INTERLACED(mb_type_col[0]) !=
                IS_INTERLACED(mb_type_col[1])) {
                mb_type_col[0] &= ~MB_TYPE_INTERLACED;
                mb_type_col[1] &= ~MB_TYPE_INTERLACED;
            }
            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;
            }
        }
    }
    await_reference_mb_row(h, &h->ref_list[1][0], mb_y);
    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][4 * mb_xy];
    l1ref1 = &h->ref_list[1][0].ref_index[1][4 * mb_xy];
    if (!b8_stride) {
        if (h->mb_y & 1) {
            l1ref0 += 2;
            l1ref1 += 2;
            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 = x8 * 3 + 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] &&
              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);
            assert(b8_stride == 2);
            if (!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref &&
                (l1ref0[i8] == 0 ||
                 (l1ref0[i8] < 0 &&
                  l1ref1[i8] == 0 &&
                  h->x264_build > 33U))) {
                const int16_t (*l1mv)[2] = l1ref0[i8] == 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{\n    int b8_stride = 2;\n    int b4_stride = h->b_stride;\n    int mb_xy = h->mb_xy, mb_y = h->mb_y;\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    await_reference_mb_row(h, &h->ref_list[1][0],\n                           h->mb_y + !!IS_INTERLACED(*mb_type));\n#define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16 | MB_TYPE_INTRA4x4 | \\\n                                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,\n                           (unsigned)top_ref,\n                           (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]) +\n                              (top_ref  == ref[list]) +\n                              (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        } 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 |\n                                 MB_TYPE_P1L0 | MB_TYPE_P1L1)) |\n                   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_y  = (h->mb_y & ~1) + h->col_parity;\n            mb_xy = h->mb_x +\n                    ((h->mb_y & ~1) + h->col_parity) * h->mb_stride;\n            b8_stride = 0;\n        } else {\n            mb_y  += h->col_fieldoff;\n            mb_xy += h->mb_stride * h->col_fieldoff;\n        }\n        goto single_col;\n    } else {\n        if (IS_INTERLACED(*mb_type)) {\n            mb_y           =  h->mb_y & ~1;\n            mb_xy          = (h->mb_y & ~1) * h->mb_stride + h->mb_x;\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 + h->mb_stride];\n            b8_stride      = 2 + 4 * h->mb_stride;\n            b4_stride     *= 6;\n            if (IS_INTERLACED(mb_type_col[0]) !=\n                IS_INTERLACED(mb_type_col[1])) {\n                mb_type_col[0] &= ~MB_TYPE_INTERLACED;\n                mb_type_col[1] &= ~MB_TYPE_INTERLACED;\n            }\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 &&\n                       (mb_type_col[0] & (MB_TYPE_16x8 | MB_TYPE_8x16))) {\n                *mb_type |= MB_TYPE_DIRECT2 |\n                            (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    await_reference_mb_row(h, &h->ref_list[1][0], mb_y);\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][4 * mb_xy];\n    l1ref1 = &h->ref_list[1][0].ref_index[1][4 * mb_xy];\n    if (!b8_stride) {\n        if (h->mb_y & 1) {\n            l1ref0 += 2;\n            l1ref1 += 2;\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 = x8 * 3 + 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,\n                           (uint8_t)ref[0], 1);\n            fill_rectangle(&h->ref_cache[1][scan8[i8 * 4]], 2, 2, 8,\n                           (uint8_t)ref[1], 1);\n            if (!IS_INTRA(mb_type_col[y8]) && !h->ref_list[1][0].long_ref &&\n                ((l1ref0[xy8] == 0 &&\n                  FFABS(l1mv0[xy4][0]) <= 1 &&\n                  FFABS(l1mv0[xy4][1]) <= 1) ||\n                 (l1ref0[xy8] < 0 &&\n                  l1ref1[xy8] == 0 &&\n                  FFABS(l1mv1[xy4][0]) <= 1 &&\n                  FFABS(l1mv1[xy4][1]) <= 1))) {\n                a =\n                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 |\n                                     MB_TYPE_P1L0 | MB_TYPE_P1L1)) |\n                       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 &&\n              FFABS(l1mv0[0][0]) <= 1 &&\n              FFABS(l1mv0[0][1]) <= 1) ||\n             (l1ref0[0] < 0 && !l1ref1[0] &&\n              FFABS(l1mv1[0][0]) <= 1 &&\n              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,\n                           (uint8_t)ref[0], 1);\n            fill_rectangle(&h->ref_cache[1][scan8[i8 * 4]], 2, 2, 8,\n                           (uint8_t)ref[1], 1);\n            assert(b8_stride == 2);\n            if (!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref &&\n                (l1ref0[i8] == 0 ||\n                 (l1ref0[i8] < 0 &&\n                  l1ref1[i8] == 0 &&\n                  h->x264_build > 33U))) {\n                const int16_t (*l1mv)[2] = l1ref0[i8] == 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,\n                                           8, 0, 4);\n                        if (ref[1] == 0)\n                            fill_rectangle(&h->mv_cache[1][scan8[i8 * 4]], 2, 2,\n                                           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) +\n                                                     (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 |\n                                     MB_TYPE_P1L0 | MB_TYPE_P1L1)) |\n                       MB_TYPE_16x16 | MB_TYPE_DIRECT2;\n    }\n}']