| /* | 
 |  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved. | 
 |  * | 
 |  *  Use of this source code is governed by a BSD-style license | 
 |  *  that can be found in the LICENSE file in the root of the source | 
 |  *  tree. An additional intellectual property rights grant can be found | 
 |  *  in the file PATENTS.  All contributing project authors may | 
 |  *  be found in the AUTHORS file in the root of the source tree. | 
 |  */ | 
 |  | 
 |  | 
 | #include <limits.h> | 
 | #include "vpx_config.h" | 
 | #include "vp8_rtcd.h" | 
 | #include "vpx/vpx_integer.h" | 
 | #include "blockd.h" | 
 | #include "reconinter.h" | 
 | #if CONFIG_RUNTIME_CPU_DETECT | 
 | #include "onyxc_int.h" | 
 | #endif | 
 |  | 
 | void vp8_copy_mem16x16_c( | 
 |     unsigned char *src, | 
 |     int src_stride, | 
 |     unsigned char *dst, | 
 |     int dst_stride) | 
 | { | 
 |  | 
 |     int r; | 
 |  | 
 |     for (r = 0; r < 16; r++) | 
 |     { | 
 | #if !(CONFIG_FAST_UNALIGNED) | 
 |         dst[0] = src[0]; | 
 |         dst[1] = src[1]; | 
 |         dst[2] = src[2]; | 
 |         dst[3] = src[3]; | 
 |         dst[4] = src[4]; | 
 |         dst[5] = src[5]; | 
 |         dst[6] = src[6]; | 
 |         dst[7] = src[7]; | 
 |         dst[8] = src[8]; | 
 |         dst[9] = src[9]; | 
 |         dst[10] = src[10]; | 
 |         dst[11] = src[11]; | 
 |         dst[12] = src[12]; | 
 |         dst[13] = src[13]; | 
 |         dst[14] = src[14]; | 
 |         dst[15] = src[15]; | 
 |  | 
 | #else | 
 |         ((uint32_t *)dst)[0] = ((uint32_t *)src)[0] ; | 
 |         ((uint32_t *)dst)[1] = ((uint32_t *)src)[1] ; | 
 |         ((uint32_t *)dst)[2] = ((uint32_t *)src)[2] ; | 
 |         ((uint32_t *)dst)[3] = ((uint32_t *)src)[3] ; | 
 |  | 
 | #endif | 
 |         src += src_stride; | 
 |         dst += dst_stride; | 
 |  | 
 |     } | 
 |  | 
 | } | 
 |  | 
 | void vp8_copy_mem8x8_c( | 
 |     unsigned char *src, | 
 |     int src_stride, | 
 |     unsigned char *dst, | 
 |     int dst_stride) | 
 | { | 
 |     int r; | 
 |  | 
 |     for (r = 0; r < 8; r++) | 
 |     { | 
 | #if !(CONFIG_FAST_UNALIGNED) | 
 |         dst[0] = src[0]; | 
 |         dst[1] = src[1]; | 
 |         dst[2] = src[2]; | 
 |         dst[3] = src[3]; | 
 |         dst[4] = src[4]; | 
 |         dst[5] = src[5]; | 
 |         dst[6] = src[6]; | 
 |         dst[7] = src[7]; | 
 | #else | 
 |         ((uint32_t *)dst)[0] = ((uint32_t *)src)[0] ; | 
 |         ((uint32_t *)dst)[1] = ((uint32_t *)src)[1] ; | 
 | #endif | 
 |         src += src_stride; | 
 |         dst += dst_stride; | 
 |  | 
 |     } | 
 |  | 
 | } | 
 |  | 
 | void vp8_copy_mem8x4_c( | 
 |     unsigned char *src, | 
 |     int src_stride, | 
 |     unsigned char *dst, | 
 |     int dst_stride) | 
 | { | 
 |     int r; | 
 |  | 
 |     for (r = 0; r < 4; r++) | 
 |     { | 
 | #if !(CONFIG_FAST_UNALIGNED) | 
 |         dst[0] = src[0]; | 
 |         dst[1] = src[1]; | 
 |         dst[2] = src[2]; | 
 |         dst[3] = src[3]; | 
 |         dst[4] = src[4]; | 
 |         dst[5] = src[5]; | 
 |         dst[6] = src[6]; | 
 |         dst[7] = src[7]; | 
 | #else | 
 |         ((uint32_t *)dst)[0] = ((uint32_t *)src)[0] ; | 
 |         ((uint32_t *)dst)[1] = ((uint32_t *)src)[1] ; | 
 | #endif | 
 |         src += src_stride; | 
 |         dst += dst_stride; | 
 |  | 
 |     } | 
 |  | 
 | } | 
 |  | 
 |  | 
 | void vp8_build_inter_predictors_b(BLOCKD *d, int pitch, unsigned char *base_pre, int pre_stride, vp8_subpix_fn_t sppf) | 
 | { | 
 |     int r; | 
 |     unsigned char *pred_ptr = d->predictor; | 
 |     unsigned char *ptr; | 
 |     ptr = base_pre + d->offset + (d->bmi.mv.as_mv.row >> 3) * pre_stride + (d->bmi.mv.as_mv.col >> 3); | 
 |  | 
 |     if (d->bmi.mv.as_mv.row & 7 || d->bmi.mv.as_mv.col & 7) | 
 |     { | 
 |         sppf(ptr, pre_stride, d->bmi.mv.as_mv.col & 7, d->bmi.mv.as_mv.row & 7, pred_ptr, pitch); | 
 |     } | 
 |     else | 
 |     { | 
 |         for (r = 0; r < 4; r++) | 
 |         { | 
 |             pred_ptr[0]  = ptr[0]; | 
 |             pred_ptr[1]  = ptr[1]; | 
 |             pred_ptr[2]  = ptr[2]; | 
 |             pred_ptr[3]  = ptr[3]; | 
 |             pred_ptr     += pitch; | 
 |             ptr         += pre_stride; | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | static void build_inter_predictors4b(MACROBLOCKD *x, BLOCKD *d, unsigned char *dst, int dst_stride, unsigned char *base_pre, int pre_stride) | 
 | { | 
 |     unsigned char *ptr; | 
 |     ptr = base_pre + d->offset + (d->bmi.mv.as_mv.row >> 3) * pre_stride + (d->bmi.mv.as_mv.col >> 3); | 
 |  | 
 |     if (d->bmi.mv.as_mv.row & 7 || d->bmi.mv.as_mv.col & 7) | 
 |     { | 
 |         x->subpixel_predict8x8(ptr, pre_stride, d->bmi.mv.as_mv.col & 7, d->bmi.mv.as_mv.row & 7, dst, dst_stride); | 
 |     } | 
 |     else | 
 |     { | 
 |         vp8_copy_mem8x8(ptr, pre_stride, dst, dst_stride); | 
 |     } | 
 | } | 
 |  | 
 | static void build_inter_predictors2b(MACROBLOCKD *x, BLOCKD *d, unsigned char *dst, int dst_stride, unsigned char *base_pre, int pre_stride) | 
 | { | 
 |     unsigned char *ptr; | 
 |     ptr = base_pre + d->offset + (d->bmi.mv.as_mv.row >> 3) * pre_stride + (d->bmi.mv.as_mv.col >> 3); | 
 |  | 
 |     if (d->bmi.mv.as_mv.row & 7 || d->bmi.mv.as_mv.col & 7) | 
 |     { | 
 |         x->subpixel_predict8x4(ptr, pre_stride, d->bmi.mv.as_mv.col & 7, d->bmi.mv.as_mv.row & 7, dst, dst_stride); | 
 |     } | 
 |     else | 
 |     { | 
 |         vp8_copy_mem8x4(ptr, pre_stride, dst, dst_stride); | 
 |     } | 
 | } | 
 |  | 
 | static void build_inter_predictors_b(BLOCKD *d, unsigned char *dst, int dst_stride, unsigned char *base_pre, int pre_stride, vp8_subpix_fn_t sppf) | 
 | { | 
 |     int r; | 
 |     unsigned char *ptr; | 
 |     ptr = base_pre + d->offset + (d->bmi.mv.as_mv.row >> 3) * pre_stride + (d->bmi.mv.as_mv.col >> 3); | 
 |  | 
 |     if (d->bmi.mv.as_mv.row & 7 || d->bmi.mv.as_mv.col & 7) | 
 |     { | 
 |         sppf(ptr, pre_stride, d->bmi.mv.as_mv.col & 7, d->bmi.mv.as_mv.row & 7, dst, dst_stride); | 
 |     } | 
 |     else | 
 |     { | 
 |         for (r = 0; r < 4; r++) | 
 |         { | 
 |           dst[0]  = ptr[0]; | 
 |           dst[1]  = ptr[1]; | 
 |           dst[2]  = ptr[2]; | 
 |           dst[3]  = ptr[3]; | 
 |           dst     += dst_stride; | 
 |           ptr     += pre_stride; | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 |  | 
 | /*encoder only*/ | 
 | void vp8_build_inter16x16_predictors_mbuv(MACROBLOCKD *x) | 
 | { | 
 |     unsigned char *uptr, *vptr; | 
 |     unsigned char *upred_ptr = &x->predictor[256]; | 
 |     unsigned char *vpred_ptr = &x->predictor[320]; | 
 |  | 
 |     int mv_row = x->mode_info_context->mbmi.mv.as_mv.row; | 
 |     int mv_col = x->mode_info_context->mbmi.mv.as_mv.col; | 
 |     int offset; | 
 |     int pre_stride = x->pre.uv_stride; | 
 |  | 
 |     /* calc uv motion vectors */ | 
 |     mv_row += 1 | (mv_row >> (sizeof(int) * CHAR_BIT - 1)); | 
 |     mv_col += 1 | (mv_col >> (sizeof(int) * CHAR_BIT - 1)); | 
 |     mv_row /= 2; | 
 |     mv_col /= 2; | 
 |     mv_row &= x->fullpixel_mask; | 
 |     mv_col &= x->fullpixel_mask; | 
 |  | 
 |     offset = (mv_row >> 3) * pre_stride + (mv_col >> 3); | 
 |     uptr = x->pre.u_buffer + offset; | 
 |     vptr = x->pre.v_buffer + offset; | 
 |  | 
 |     if ((mv_row | mv_col) & 7) | 
 |     { | 
 |         x->subpixel_predict8x8(uptr, pre_stride, mv_col & 7, mv_row & 7, upred_ptr, 8); | 
 |         x->subpixel_predict8x8(vptr, pre_stride, mv_col & 7, mv_row & 7, vpred_ptr, 8); | 
 |     } | 
 |     else | 
 |     { | 
 |         vp8_copy_mem8x8(uptr, pre_stride, upred_ptr, 8); | 
 |         vp8_copy_mem8x8(vptr, pre_stride, vpred_ptr, 8); | 
 |     } | 
 | } | 
 |  | 
 | /*encoder only*/ | 
 | void vp8_build_inter4x4_predictors_mbuv(MACROBLOCKD *x) | 
 | { | 
 |     int i, j; | 
 |     int pre_stride = x->pre.uv_stride; | 
 |     unsigned char *base_pre; | 
 |  | 
 |     /* build uv mvs */ | 
 |     for (i = 0; i < 2; i++) | 
 |     { | 
 |         for (j = 0; j < 2; j++) | 
 |         { | 
 |             int yoffset = i * 8 + j * 2; | 
 |             int uoffset = 16 + i * 2 + j; | 
 |             int voffset = 20 + i * 2 + j; | 
 |  | 
 |             int temp; | 
 |  | 
 |             temp = x->block[yoffset  ].bmi.mv.as_mv.row | 
 |                    + x->block[yoffset+1].bmi.mv.as_mv.row | 
 |                    + x->block[yoffset+4].bmi.mv.as_mv.row | 
 |                    + x->block[yoffset+5].bmi.mv.as_mv.row; | 
 |  | 
 |             temp += 4 + ((temp >> (sizeof(temp) * CHAR_BIT - 1)) * 8); | 
 |  | 
 |             x->block[uoffset].bmi.mv.as_mv.row = (temp / 8) & x->fullpixel_mask; | 
 |  | 
 |             temp = x->block[yoffset  ].bmi.mv.as_mv.col | 
 |                    + x->block[yoffset+1].bmi.mv.as_mv.col | 
 |                    + x->block[yoffset+4].bmi.mv.as_mv.col | 
 |                    + x->block[yoffset+5].bmi.mv.as_mv.col; | 
 |  | 
 |             temp += 4 + ((temp >> (sizeof(temp) * CHAR_BIT - 1)) * 8); | 
 |  | 
 |             x->block[uoffset].bmi.mv.as_mv.col = (temp / 8) & x->fullpixel_mask; | 
 |  | 
 |             x->block[voffset].bmi.mv.as_int = x->block[uoffset].bmi.mv.as_int; | 
 |         } | 
 |     } | 
 |  | 
 |     base_pre = x->pre.u_buffer; | 
 |     for (i = 16; i < 20; i += 2) | 
 |     { | 
 |         BLOCKD *d0 = &x->block[i]; | 
 |         BLOCKD *d1 = &x->block[i+1]; | 
 |  | 
 |         if (d0->bmi.mv.as_int == d1->bmi.mv.as_int) | 
 |             build_inter_predictors2b(x, d0, d0->predictor, 8, base_pre, pre_stride); | 
 |         else | 
 |         { | 
 |             vp8_build_inter_predictors_b(d0, 8, base_pre, pre_stride, x->subpixel_predict); | 
 |             vp8_build_inter_predictors_b(d1, 8, base_pre, pre_stride, x->subpixel_predict); | 
 |         } | 
 |     } | 
 |  | 
 |     base_pre = x->pre.v_buffer; | 
 |     for (i = 20; i < 24; i += 2) | 
 |     { | 
 |         BLOCKD *d0 = &x->block[i]; | 
 |         BLOCKD *d1 = &x->block[i+1]; | 
 |  | 
 |         if (d0->bmi.mv.as_int == d1->bmi.mv.as_int) | 
 |             build_inter_predictors2b(x, d0, d0->predictor, 8, base_pre, pre_stride); | 
 |         else | 
 |         { | 
 |             vp8_build_inter_predictors_b(d0, 8, base_pre, pre_stride, x->subpixel_predict); | 
 |             vp8_build_inter_predictors_b(d1, 8, base_pre, pre_stride, x->subpixel_predict); | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 |  | 
 | /*encoder only*/ | 
 | void vp8_build_inter16x16_predictors_mby(MACROBLOCKD *x, | 
 |                                          unsigned char *dst_y, | 
 |                                          int dst_ystride) | 
 | { | 
 |     unsigned char *ptr_base; | 
 |     unsigned char *ptr; | 
 |     int mv_row = x->mode_info_context->mbmi.mv.as_mv.row; | 
 |     int mv_col = x->mode_info_context->mbmi.mv.as_mv.col; | 
 |     int pre_stride = x->pre.y_stride; | 
 |  | 
 |     ptr_base = x->pre.y_buffer; | 
 |     ptr = ptr_base + (mv_row >> 3) * pre_stride + (mv_col >> 3); | 
 |  | 
 |     if ((mv_row | mv_col) & 7) | 
 |     { | 
 |         x->subpixel_predict16x16(ptr, pre_stride, mv_col & 7, mv_row & 7, | 
 |                                  dst_y, dst_ystride); | 
 |     } | 
 |     else | 
 |     { | 
 |         vp8_copy_mem16x16(ptr, pre_stride, dst_y, | 
 |             dst_ystride); | 
 |     } | 
 | } | 
 |  | 
 | static void clamp_mv_to_umv_border(MV *mv, const MACROBLOCKD *xd) | 
 | { | 
 |     /* If the MV points so far into the UMV border that no visible pixels | 
 |      * are used for reconstruction, the subpel part of the MV can be | 
 |      * discarded and the MV limited to 16 pixels with equivalent results. | 
 |      * | 
 |      * This limit kicks in at 19 pixels for the top and left edges, for | 
 |      * the 16 pixels plus 3 taps right of the central pixel when subpel | 
 |      * filtering. The bottom and right edges use 16 pixels plus 2 pixels | 
 |      * left of the central pixel when filtering. | 
 |      */ | 
 |     if (mv->col < (xd->mb_to_left_edge - (19 << 3))) | 
 |         mv->col = xd->mb_to_left_edge - (16 << 3); | 
 |     else if (mv->col > xd->mb_to_right_edge + (18 << 3)) | 
 |         mv->col = xd->mb_to_right_edge + (16 << 3); | 
 |  | 
 |     if (mv->row < (xd->mb_to_top_edge - (19 << 3))) | 
 |         mv->row = xd->mb_to_top_edge - (16 << 3); | 
 |     else if (mv->row > xd->mb_to_bottom_edge + (18 << 3)) | 
 |         mv->row = xd->mb_to_bottom_edge + (16 << 3); | 
 | } | 
 |  | 
 | /* A version of the above function for chroma block MVs.*/ | 
 | static void clamp_uvmv_to_umv_border(MV *mv, const MACROBLOCKD *xd) | 
 | { | 
 |     mv->col = (2*mv->col < (xd->mb_to_left_edge - (19 << 3))) ? | 
 |         (xd->mb_to_left_edge - (16 << 3)) >> 1 : mv->col; | 
 |     mv->col = (2*mv->col > xd->mb_to_right_edge + (18 << 3)) ? | 
 |         (xd->mb_to_right_edge + (16 << 3)) >> 1 : mv->col; | 
 |  | 
 |     mv->row = (2*mv->row < (xd->mb_to_top_edge - (19 << 3))) ? | 
 |         (xd->mb_to_top_edge - (16 << 3)) >> 1 : mv->row; | 
 |     mv->row = (2*mv->row > xd->mb_to_bottom_edge + (18 << 3)) ? | 
 |         (xd->mb_to_bottom_edge + (16 << 3)) >> 1 : mv->row; | 
 | } | 
 |  | 
 | void vp8_build_inter16x16_predictors_mb(MACROBLOCKD *x, | 
 |                                         unsigned char *dst_y, | 
 |                                         unsigned char *dst_u, | 
 |                                         unsigned char *dst_v, | 
 |                                         int dst_ystride, | 
 |                                         int dst_uvstride) | 
 | { | 
 |     int offset; | 
 |     unsigned char *ptr; | 
 |     unsigned char *uptr, *vptr; | 
 |  | 
 |     int_mv _16x16mv; | 
 |  | 
 |     unsigned char *ptr_base = x->pre.y_buffer; | 
 |     int pre_stride = x->pre.y_stride; | 
 |  | 
 |     _16x16mv.as_int = x->mode_info_context->mbmi.mv.as_int; | 
 |  | 
 |     if (x->mode_info_context->mbmi.need_to_clamp_mvs) | 
 |     { | 
 |         clamp_mv_to_umv_border(&_16x16mv.as_mv, x); | 
 |     } | 
 |  | 
 |     ptr = ptr_base + ( _16x16mv.as_mv.row >> 3) * pre_stride + (_16x16mv.as_mv.col >> 3); | 
 |  | 
 |     if ( _16x16mv.as_int & 0x00070007) | 
 |     { | 
 |         x->subpixel_predict16x16(ptr, pre_stride, _16x16mv.as_mv.col & 7,  _16x16mv.as_mv.row & 7, dst_y, dst_ystride); | 
 |     } | 
 |     else | 
 |     { | 
 |         vp8_copy_mem16x16(ptr, pre_stride, dst_y, dst_ystride); | 
 |     } | 
 |  | 
 |     /* calc uv motion vectors */ | 
 |     _16x16mv.as_mv.row += 1 | (_16x16mv.as_mv.row >> (sizeof(int) * CHAR_BIT - 1)); | 
 |     _16x16mv.as_mv.col += 1 | (_16x16mv.as_mv.col >> (sizeof(int) * CHAR_BIT - 1)); | 
 |     _16x16mv.as_mv.row /= 2; | 
 |     _16x16mv.as_mv.col /= 2; | 
 |     _16x16mv.as_mv.row &= x->fullpixel_mask; | 
 |     _16x16mv.as_mv.col &= x->fullpixel_mask; | 
 |  | 
 |     pre_stride >>= 1; | 
 |     offset = ( _16x16mv.as_mv.row >> 3) * pre_stride + (_16x16mv.as_mv.col >> 3); | 
 |     uptr = x->pre.u_buffer + offset; | 
 |     vptr = x->pre.v_buffer + offset; | 
 |  | 
 |     if ( _16x16mv.as_int & 0x00070007) | 
 |     { | 
 |         x->subpixel_predict8x8(uptr, pre_stride, _16x16mv.as_mv.col & 7,  _16x16mv.as_mv.row & 7, dst_u, dst_uvstride); | 
 |         x->subpixel_predict8x8(vptr, pre_stride, _16x16mv.as_mv.col & 7,  _16x16mv.as_mv.row & 7, dst_v, dst_uvstride); | 
 |     } | 
 |     else | 
 |     { | 
 |         vp8_copy_mem8x8(uptr, pre_stride, dst_u, dst_uvstride); | 
 |         vp8_copy_mem8x8(vptr, pre_stride, dst_v, dst_uvstride); | 
 |     } | 
 | } | 
 |  | 
 | static void build_inter4x4_predictors_mb(MACROBLOCKD *x) | 
 | { | 
 |     int i; | 
 |     unsigned char *base_dst = x->dst.y_buffer; | 
 |     unsigned char *base_pre = x->pre.y_buffer; | 
 |  | 
 |     if (x->mode_info_context->mbmi.partitioning < 3) | 
 |     { | 
 |         BLOCKD *b; | 
 |         int dst_stride = x->dst.y_stride; | 
 |  | 
 |         x->block[ 0].bmi = x->mode_info_context->bmi[ 0]; | 
 |         x->block[ 2].bmi = x->mode_info_context->bmi[ 2]; | 
 |         x->block[ 8].bmi = x->mode_info_context->bmi[ 8]; | 
 |         x->block[10].bmi = x->mode_info_context->bmi[10]; | 
 |         if (x->mode_info_context->mbmi.need_to_clamp_mvs) | 
 |         { | 
 |             clamp_mv_to_umv_border(&x->block[ 0].bmi.mv.as_mv, x); | 
 |             clamp_mv_to_umv_border(&x->block[ 2].bmi.mv.as_mv, x); | 
 |             clamp_mv_to_umv_border(&x->block[ 8].bmi.mv.as_mv, x); | 
 |             clamp_mv_to_umv_border(&x->block[10].bmi.mv.as_mv, x); | 
 |         } | 
 |  | 
 |         b = &x->block[ 0]; | 
 |         build_inter_predictors4b(x, b, base_dst + b->offset, dst_stride, base_pre, dst_stride); | 
 |         b = &x->block[ 2]; | 
 |         build_inter_predictors4b(x, b, base_dst + b->offset, dst_stride, base_pre, dst_stride); | 
 |         b = &x->block[ 8]; | 
 |         build_inter_predictors4b(x, b, base_dst + b->offset, dst_stride, base_pre, dst_stride); | 
 |         b = &x->block[10]; | 
 |         build_inter_predictors4b(x, b, base_dst + b->offset, dst_stride, base_pre, dst_stride); | 
 |     } | 
 |     else | 
 |     { | 
 |         for (i = 0; i < 16; i += 2) | 
 |         { | 
 |             BLOCKD *d0 = &x->block[i]; | 
 |             BLOCKD *d1 = &x->block[i+1]; | 
 |             int dst_stride = x->dst.y_stride; | 
 |  | 
 |             x->block[i+0].bmi = x->mode_info_context->bmi[i+0]; | 
 |             x->block[i+1].bmi = x->mode_info_context->bmi[i+1]; | 
 |             if (x->mode_info_context->mbmi.need_to_clamp_mvs) | 
 |             { | 
 |                 clamp_mv_to_umv_border(&x->block[i+0].bmi.mv.as_mv, x); | 
 |                 clamp_mv_to_umv_border(&x->block[i+1].bmi.mv.as_mv, x); | 
 |             } | 
 |  | 
 |             if (d0->bmi.mv.as_int == d1->bmi.mv.as_int) | 
 |                 build_inter_predictors2b(x, d0, base_dst + d0->offset, dst_stride, base_pre, dst_stride); | 
 |             else | 
 |             { | 
 |                 build_inter_predictors_b(d0, base_dst + d0->offset, dst_stride, base_pre, dst_stride, x->subpixel_predict); | 
 |                 build_inter_predictors_b(d1, base_dst + d1->offset, dst_stride, base_pre, dst_stride, x->subpixel_predict); | 
 |             } | 
 |  | 
 |         } | 
 |  | 
 |     } | 
 |     base_dst = x->dst.u_buffer; | 
 |     base_pre = x->pre.u_buffer; | 
 |     for (i = 16; i < 20; i += 2) | 
 |     { | 
 |         BLOCKD *d0 = &x->block[i]; | 
 |         BLOCKD *d1 = &x->block[i+1]; | 
 |         int dst_stride = x->dst.uv_stride; | 
 |  | 
 |         /* Note: uv mvs already clamped in build_4x4uvmvs() */ | 
 |  | 
 |         if (d0->bmi.mv.as_int == d1->bmi.mv.as_int) | 
 |             build_inter_predictors2b(x, d0, base_dst + d0->offset, dst_stride, base_pre, dst_stride); | 
 |         else | 
 |         { | 
 |             build_inter_predictors_b(d0, base_dst + d0->offset, dst_stride, base_pre, dst_stride, x->subpixel_predict); | 
 |             build_inter_predictors_b(d1, base_dst + d1->offset, dst_stride, base_pre, dst_stride, x->subpixel_predict); | 
 |         } | 
 |     } | 
 |  | 
 |     base_dst = x->dst.v_buffer; | 
 |     base_pre = x->pre.v_buffer; | 
 |     for (i = 20; i < 24; i += 2) | 
 |     { | 
 |         BLOCKD *d0 = &x->block[i]; | 
 |         BLOCKD *d1 = &x->block[i+1]; | 
 |         int dst_stride = x->dst.uv_stride; | 
 |  | 
 |         /* Note: uv mvs already clamped in build_4x4uvmvs() */ | 
 |  | 
 |         if (d0->bmi.mv.as_int == d1->bmi.mv.as_int) | 
 |             build_inter_predictors2b(x, d0, base_dst + d0->offset, dst_stride, base_pre, dst_stride); | 
 |         else | 
 |         { | 
 |             build_inter_predictors_b(d0, base_dst + d0->offset, dst_stride, base_pre, dst_stride, x->subpixel_predict); | 
 |             build_inter_predictors_b(d1, base_dst + d1->offset, dst_stride, base_pre, dst_stride, x->subpixel_predict); | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | static | 
 | void build_4x4uvmvs(MACROBLOCKD *x) | 
 | { | 
 |     int i, j; | 
 |  | 
 |     for (i = 0; i < 2; i++) | 
 |     { | 
 |         for (j = 0; j < 2; j++) | 
 |         { | 
 |             int yoffset = i * 8 + j * 2; | 
 |             int uoffset = 16 + i * 2 + j; | 
 |             int voffset = 20 + i * 2 + j; | 
 |  | 
 |             int temp; | 
 |  | 
 |             temp = x->mode_info_context->bmi[yoffset + 0].mv.as_mv.row | 
 |                  + x->mode_info_context->bmi[yoffset + 1].mv.as_mv.row | 
 |                  + x->mode_info_context->bmi[yoffset + 4].mv.as_mv.row | 
 |                  + x->mode_info_context->bmi[yoffset + 5].mv.as_mv.row; | 
 |  | 
 |             temp += 4 + ((temp >> (sizeof(temp) * CHAR_BIT - 1)) * 8); | 
 |  | 
 |             x->block[uoffset].bmi.mv.as_mv.row = (temp / 8) & x->fullpixel_mask; | 
 |  | 
 |             temp = x->mode_info_context->bmi[yoffset + 0].mv.as_mv.col | 
 |                  + x->mode_info_context->bmi[yoffset + 1].mv.as_mv.col | 
 |                  + x->mode_info_context->bmi[yoffset + 4].mv.as_mv.col | 
 |                  + x->mode_info_context->bmi[yoffset + 5].mv.as_mv.col; | 
 |  | 
 |             temp += 4 + ((temp >> (sizeof(temp) * CHAR_BIT - 1)) * 8); | 
 |  | 
 |             x->block[uoffset].bmi.mv.as_mv.col = (temp / 8) & x->fullpixel_mask; | 
 |  | 
 |             if (x->mode_info_context->mbmi.need_to_clamp_mvs) | 
 |                 clamp_uvmv_to_umv_border(&x->block[uoffset].bmi.mv.as_mv, x); | 
 |  | 
 |             x->block[voffset].bmi.mv.as_int = x->block[uoffset].bmi.mv.as_int; | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | void vp8_build_inter_predictors_mb(MACROBLOCKD *xd) | 
 | { | 
 |     if (xd->mode_info_context->mbmi.mode != SPLITMV) | 
 |     { | 
 |         vp8_build_inter16x16_predictors_mb(xd, xd->dst.y_buffer, | 
 |                                            xd->dst.u_buffer, xd->dst.v_buffer, | 
 |                                            xd->dst.y_stride, xd->dst.uv_stride); | 
 |     } | 
 |     else | 
 |     { | 
 |         build_4x4uvmvs(xd); | 
 |         build_inter4x4_predictors_mb(xd); | 
 |     } | 
 | } |