Update libvpx sources to v0.9.2-35-ga8a38bc. ...

source/libvpx/vp8/common/reconintra_mt.c

+/*
+ *  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 "vpx_ports/config.h"
+#include "recon.h"
+#include "reconintra.h"
+#include "vpx_mem/vpx_mem.h"
+#include "onyxd_int.h"
+
+// For skip_recon_mb(), add vp8_build_intra_predictors_mby_s(MACROBLOCKD *x) and
+// vp8_build_intra_predictors_mbuv_s(MACROBLOCKD *x).
+
+void vp8mt_build_intra_predictors_mby(VP8D_COMP *pbi, MACROBLOCKD *x, int mb_row, int mb_col)
+{
+#if CONFIG_MULTITHREAD
+    unsigned char *yabove_row;    // = x->dst.y_buffer - x->dst.y_stride;
+    unsigned char *yleft_col;
+    unsigned char yleft_buf[16];
+    unsigned char ytop_left;      // = yabove_row[-1];
+    unsigned char *ypred_ptr = x->predictor;
+    int r, c, i;
+
+    if (pbi->common.filter_level)
+    {
+        yabove_row = pbi->mt_yabove_row[mb_row] + mb_col*16 +32;
+        yleft_col = pbi->mt_yleft_col[mb_row];
+    } else
+    {
+        yabove_row = x->dst.y_buffer - x->dst.y_stride;
+
+        for (i = 0; i < 16; i++)
+            yleft_buf[i] = x->dst.y_buffer [i* x->dst.y_stride -1];
+        yleft_col = yleft_buf;
+    }
+
+    ytop_left = yabove_row[-1];
+
+    // for Y
+    switch (x->mode_info_context->mbmi.mode)
+    {
+    case DC_PRED:
+    {
+        int expected_dc;
+        int i;
+        int shift;
+        int average = 0;
+
+
+        if (x->up_available || x->left_available)
+        {
+            if (x->up_available)
+            {
+                for (i = 0; i < 16; i++)
+                {
+                    average += yabove_row[i];
+                }
+            }
+
+            if (x->left_available)
+            {
+
+                for (i = 0; i < 16; i++)
+                {
+                    average += yleft_col[i];
+                }
+
+            }
+
+
+
+            shift = 3 + x->up_available + x->left_available;
+            expected_dc = (average + (1 << (shift - 1))) >> shift;
+        }
+        else
+        {
+            expected_dc = 128;
+        }
+
+        vpx_memset(ypred_ptr, expected_dc, 256);
+    }
+    break;
+    case V_PRED:
+    {
+
+        for (r = 0; r < 16; r++)
+        {
+
+            ((int *)ypred_ptr)[0] = ((int *)yabove_row)[0];
+            ((int *)ypred_ptr)[1] = ((int *)yabove_row)[1];
+            ((int *)ypred_ptr)[2] = ((int *)yabove_row)[2];
+            ((int *)ypred_ptr)[3] = ((int *)yabove_row)[3];
+            ypred_ptr += 16;
+        }
+    }
+    break;
+    case H_PRED:
+    {
+
+        for (r = 0; r < 16; r++)
+        {
+
+            vpx_memset(ypred_ptr, yleft_col[r], 16);
+            ypred_ptr += 16;
+        }
+
+    }
+    break;
+    case TM_PRED:
+    {
+
+        for (r = 0; r < 16; r++)
+        {
+            for (c = 0; c < 16; c++)
+            {
+                int pred =  yleft_col[r] + yabove_row[ c] - ytop_left;
+
+                if (pred < 0)
+                    pred = 0;
+
+                if (pred > 255)
+                    pred = 255;
+
+                ypred_ptr[c] = pred;
+            }
+
+            ypred_ptr += 16;
+        }
+
+    }
+    break;
+    case B_PRED:
+    case NEARESTMV:
+    case NEARMV:
+    case ZEROMV:
+    case NEWMV:
+    case SPLITMV:
+    case MB_MODE_COUNT:
+        break;
+    }
+#else
+    (void) pbi;
+    (void) x;
+    (void) mb_row;
+    (void) mb_col;
+#endif
+}
+
+void vp8mt_build_intra_predictors_mby_s(VP8D_COMP *pbi, MACROBLOCKD *x, int mb_row, int mb_col)
+{
+#if CONFIG_MULTITHREAD
+    unsigned char *yabove_row;    // = x->dst.y_buffer - x->dst.y_stride;
+    unsigned char *yleft_col;
+    unsigned char yleft_buf[16];
+    unsigned char ytop_left;      // = yabove_row[-1];
+    unsigned char *ypred_ptr = x->predictor;
+    int r, c, i;
+
+    int y_stride = x->dst.y_stride;
+    ypred_ptr = x->dst.y_buffer; //x->predictor;
+
+    if (pbi->common.filter_level)
+    {
+        yabove_row = pbi->mt_yabove_row[mb_row] + mb_col*16 +32;
+        yleft_col = pbi->mt_yleft_col[mb_row];
+    } else
+    {
+        yabove_row = x->dst.y_buffer - x->dst.y_stride;
+
+        for (i = 0; i < 16; i++)
+            yleft_buf[i] = x->dst.y_buffer [i* x->dst.y_stride -1];
+        yleft_col = yleft_buf;
+    }
+
+    ytop_left = yabove_row[-1];
+
+    // for Y
+    switch (x->mode_info_context->mbmi.mode)
+    {
+    case DC_PRED:
+    {
+        int expected_dc;
+        int i;
+        int shift;
+        int average = 0;
+
+
+        if (x->up_available || x->left_available)
+        {
+            if (x->up_available)
+            {
+                for (i = 0; i < 16; i++)
+                {
+                    average += yabove_row[i];
+                }
+            }
+
+            if (x->left_available)
+            {
+
+                for (i = 0; i < 16; i++)
+                {
+                    average += yleft_col[i];
+                }
+
+            }
+
+
+
+            shift = 3 + x->up_available + x->left_available;
+            expected_dc = (average + (1 << (shift - 1))) >> shift;
+        }
+        else
+        {
+            expected_dc = 128;
+        }
+
+        //vpx_memset(ypred_ptr, expected_dc, 256);
+        for (r = 0; r < 16; r++)
+        {
+            vpx_memset(ypred_ptr, expected_dc, 16);
+            ypred_ptr += y_stride; //16;
+        }
+    }
+    break;
+    case V_PRED:
+    {
+
+        for (r = 0; r < 16; r++)
+        {
+
+            ((int *)ypred_ptr)[0] = ((int *)yabove_row)[0];
+            ((int *)ypred_ptr)[1] = ((int *)yabove_row)[1];
+            ((int *)ypred_ptr)[2] = ((int *)yabove_row)[2];
+            ((int *)ypred_ptr)[3] = ((int *)yabove_row)[3];
+            ypred_ptr += y_stride; //16;
+        }
+    }
+    break;
+    case H_PRED:
+    {
+
+        for (r = 0; r < 16; r++)
+        {
+
+            vpx_memset(ypred_ptr, yleft_col[r], 16);
+            ypred_ptr += y_stride;  //16;
+        }
+
+    }
+    break;
+    case TM_PRED:
+    {
+
+        for (r = 0; r < 16; r++)
+        {
+            for (c = 0; c < 16; c++)
+            {
+                int pred =  yleft_col[r] + yabove_row[ c] - ytop_left;
+
+                if (pred < 0)
+                    pred = 0;
+
+                if (pred > 255)
+                    pred = 255;
+
+                ypred_ptr[c] = pred;
+            }
+
+            ypred_ptr += y_stride;  //16;
+        }
+
+    }
+    break;
+    case B_PRED:
+    case NEARESTMV:
+    case NEARMV:
+    case ZEROMV:
+    case NEWMV:
+    case SPLITMV:
+    case MB_MODE_COUNT:
+        break;
+    }
+#else
+    (void) pbi;
+    (void) x;
+    (void) mb_row;
+    (void) mb_col;
+#endif
+}
+
+void vp8mt_build_intra_predictors_mbuv(VP8D_COMP *pbi, MACROBLOCKD *x, int mb_row, int mb_col)
+{
+#if CONFIG_MULTITHREAD
+    unsigned char *uabove_row;   // = x->dst.u_buffer - x->dst.uv_stride;
+    unsigned char *uleft_col;    //[16];
+    unsigned char uleft_buf[8];
+    unsigned char utop_left;     // = uabove_row[-1];
+    unsigned char *vabove_row;   // = x->dst.v_buffer - x->dst.uv_stride;
+    unsigned char *vleft_col;    //[20];
+    unsigned char vleft_buf[8];
+    unsigned char vtop_left;     // = vabove_row[-1];
+    unsigned char *upred_ptr = &x->predictor[256];
+    unsigned char *vpred_ptr = &x->predictor[320];
+    int i, j;
+
+    if (pbi->common.filter_level)
+    {
+        uabove_row = pbi->mt_uabove_row[mb_row] + mb_col*8 +16;
+        vabove_row = pbi->mt_vabove_row[mb_row] + mb_col*8 +16;
+        uleft_col = pbi->mt_uleft_col[mb_row];
+        vleft_col = pbi->mt_vleft_col[mb_row];
+    } else
+    {
+        uabove_row = x->dst.u_buffer - x->dst.uv_stride;
+        vabove_row = x->dst.v_buffer - x->dst.uv_stride;
+
+        for (i = 0; i < 8; i++)
+        {
+            uleft_buf[i] = x->dst.u_buffer [i* x->dst.uv_stride -1];
+            vleft_buf[i] = x->dst.v_buffer [i* x->dst.uv_stride -1];
+        }
+        uleft_col = uleft_buf;
+        vleft_col = vleft_buf;
+    }
+    utop_left = uabove_row[-1];
+    vtop_left = vabove_row[-1];
+
+    switch (x->mode_info_context->mbmi.uv_mode)
+    {
+    case DC_PRED:
+    {
+        int expected_udc;
+        int expected_vdc;
+        int i;
+        int shift;
+        int Uaverage = 0;
+        int Vaverage = 0;
+
+        if (x->up_available)
+        {
+            for (i = 0; i < 8; i++)
+            {
+                Uaverage += uabove_row[i];
+                Vaverage += vabove_row[i];
+            }
+        }
+
+        if (x->left_available)
+        {
+            for (i = 0; i < 8; i++)
+            {
+                Uaverage += uleft_col[i];
+                Vaverage += vleft_col[i];
+            }
+        }
+
+        if (!x->up_available && !x->left_available)
+        {
+            expected_udc = 128;
+            expected_vdc = 128;
+        }
+        else
+        {
+            shift = 2 + x->up_available + x->left_available;
+            expected_udc = (Uaverage + (1 << (shift - 1))) >> shift;
+            expected_vdc = (Vaverage + (1 << (shift - 1))) >> shift;
+        }
+
+
+        vpx_memset(upred_ptr, expected_udc, 64);
+        vpx_memset(vpred_ptr, expected_vdc, 64);
+
+
+    }
+    break;
+    case V_PRED:
+    {
+        int i;
+
+        for (i = 0; i < 8; i++)
+        {
+            vpx_memcpy(upred_ptr, uabove_row, 8);
+            vpx_memcpy(vpred_ptr, vabove_row, 8);
+            upred_ptr += 8;
+            vpred_ptr += 8;
+        }
+
+    }
+    break;
+    case H_PRED:
+    {
+        int i;
+
+        for (i = 0; i < 8; i++)
+        {
+            vpx_memset(upred_ptr, uleft_col[i], 8);
+            vpx_memset(vpred_ptr, vleft_col[i], 8);
+            upred_ptr += 8;
+            vpred_ptr += 8;
+        }
+    }
+
+    break;
+    case TM_PRED:
+    {
+        int i;
+
+        for (i = 0; i < 8; i++)
+        {
+            for (j = 0; j < 8; j++)
+            {
+                int predu = uleft_col[i] + uabove_row[j] - utop_left;
+                int predv = vleft_col[i] + vabove_row[j] - vtop_left;
+
+                if (predu < 0)
+                    predu = 0;
+
+                if (predu > 255)
+                    predu = 255;
+
+                if (predv < 0)
+                    predv = 0;
+
+                if (predv > 255)
+                    predv = 255;
+
+                upred_ptr[j] = predu;
+                vpred_ptr[j] = predv;
+            }
+
+            upred_ptr += 8;
+            vpred_ptr += 8;
+        }
+
+    }
+    break;
+    case B_PRED:
+    case NEARESTMV:
+    case NEARMV:
+    case ZEROMV:
+    case NEWMV:
+    case SPLITMV:
+    case MB_MODE_COUNT:
+        break;
+    }
+#else
+    (void) pbi;
+    (void) x;
+    (void) mb_row;
+    (void) mb_col;
+#endif
+}
+
+void vp8mt_build_intra_predictors_mbuv_s(VP8D_COMP *pbi, MACROBLOCKD *x, int mb_row, int mb_col)
+{
+#if CONFIG_MULTITHREAD
+    unsigned char *uabove_row;  // = x->dst.u_buffer - x->dst.uv_stride;
+    unsigned char *uleft_col;   //[16];
+    unsigned char uleft_buf[8];
+    unsigned char utop_left;    // = uabove_row[-1];
+    unsigned char *vabove_row;  // = x->dst.v_buffer - x->dst.uv_stride;
+    unsigned char *vleft_col;   //[20];
+    unsigned char vleft_buf[8];
+    unsigned char vtop_left;    // = vabove_row[-1];
+    unsigned char *upred_ptr = x->dst.u_buffer; //&x->predictor[256];
+    unsigned char *vpred_ptr = x->dst.v_buffer; //&x->predictor[320];
+    int uv_stride = x->dst.uv_stride;
+    int i, j;
+
+    if (pbi->common.filter_level)
+    {
+        uabove_row = pbi->mt_uabove_row[mb_row] + mb_col*8 +16;
+        vabove_row = pbi->mt_vabove_row[mb_row] + mb_col*8 +16;
+        uleft_col = pbi->mt_uleft_col[mb_row];
+        vleft_col = pbi->mt_vleft_col[mb_row];
+    } else
+    {
+        uabove_row = x->dst.u_buffer - x->dst.uv_stride;
+        vabove_row = x->dst.v_buffer - x->dst.uv_stride;
+
+        for (i = 0; i < 8; i++)
+        {
+            uleft_buf[i] = x->dst.u_buffer [i* x->dst.uv_stride -1];
+            vleft_buf[i] = x->dst.v_buffer [i* x->dst.uv_stride -1];
+        }
+        uleft_col = uleft_buf;
+        vleft_col = vleft_buf;
+    }
+    utop_left = uabove_row[-1];
+    vtop_left = vabove_row[-1];
+
+    switch (x->mode_info_context->mbmi.uv_mode)
+    {
+    case DC_PRED:
+    {
+        int expected_udc;
+        int expected_vdc;
+        int i;
+        int shift;
+        int Uaverage = 0;
+        int Vaverage = 0;
+
+        if (x->up_available)
+        {
+            for (i = 0; i < 8; i++)
+            {
+                Uaverage += uabove_row[i];
+                Vaverage += vabove_row[i];
+            }
+        }
+
+        if (x->left_available)
+        {
+            for (i = 0; i < 8; i++)
+            {
+                Uaverage += uleft_col[i];
+                Vaverage += vleft_col[i];
+            }
+        }
+
+        if (!x->up_available && !x->left_available)
+        {
+            expected_udc = 128;
+            expected_vdc = 128;
+        }
+        else
+        {
+            shift = 2 + x->up_available + x->left_available;
+            expected_udc = (Uaverage + (1 << (shift - 1))) >> shift;
+            expected_vdc = (Vaverage + (1 << (shift - 1))) >> shift;
+        }
+
+
+        //vpx_memset(upred_ptr,expected_udc,64);
+        //vpx_memset(vpred_ptr,expected_vdc,64);
+        for (i = 0; i < 8; i++)
+        {
+            vpx_memset(upred_ptr, expected_udc, 8);
+            vpx_memset(vpred_ptr, expected_vdc, 8);
+            upred_ptr += uv_stride; //8;
+            vpred_ptr += uv_stride; //8;
+        }
+    }
+    break;
+    case V_PRED:
+    {
+        int i;
+
+        for (i = 0; i < 8; i++)
+        {
+            vpx_memcpy(upred_ptr, uabove_row, 8);
+            vpx_memcpy(vpred_ptr, vabove_row, 8);
+            upred_ptr += uv_stride; //8;
+            vpred_ptr += uv_stride; //8;
+        }
+
+    }
+    break;
+    case H_PRED:
+    {
+        int i;
+
+        for (i = 0; i < 8; i++)
+        {
+            vpx_memset(upred_ptr, uleft_col[i], 8);
+            vpx_memset(vpred_ptr, vleft_col[i], 8);
+            upred_ptr += uv_stride; //8;
+            vpred_ptr += uv_stride; //8;
+        }
+    }
+
+    break;
+    case TM_PRED:
+    {
+        int i;
+
+        for (i = 0; i < 8; i++)
+        {
+            for (j = 0; j < 8; j++)
+            {
+                int predu = uleft_col[i] + uabove_row[j] - utop_left;
+                int predv = vleft_col[i] + vabove_row[j] - vtop_left;
+
+                if (predu < 0)
+                    predu = 0;
+
+                if (predu > 255)
+                    predu = 255;
+
+                if (predv < 0)
+                    predv = 0;
+
+                if (predv > 255)
+                    predv = 255;
+
+                upred_ptr[j] = predu;
+                vpred_ptr[j] = predv;
+            }
+
+            upred_ptr += uv_stride; //8;
+            vpred_ptr += uv_stride; //8;
+        }
+
+    }
+    break;
+    case B_PRED:
+    case NEARESTMV:
+    case NEARMV:
+    case ZEROMV:
+    case NEWMV:
+    case SPLITMV:
+    case MB_MODE_COUNT:
+        break;
+    }
+#else
+    (void) pbi;
+    (void) x;
+    (void) mb_row;
+    (void) mb_col;
+#endif
+}
+
+
+void vp8mt_predict_intra4x4(VP8D_COMP *pbi,
+                          MACROBLOCKD *xd,
+                          int b_mode,
+                          unsigned char *predictor,
+                          int mb_row,
+                          int mb_col,
+                          int num)
+{
+#if CONFIG_MULTITHREAD
+    int i, r, c;
+
+    unsigned char *Above;   // = *(x->base_dst) + x->dst - x->dst_stride;
+    unsigned char Left[4];
+    unsigned char top_left; // = Above[-1];
+
+    BLOCKD *x = &xd->block[num];
+
+    //Caution: For some b_mode, it needs 8 pixels (4 above + 4 above-right).
+    if (num < 4 && pbi->common.filter_level)
+        Above = pbi->mt_yabove_row[mb_row] + mb_col*16 + num*4 + 32;
+    else
+        Above = *(x->base_dst) + x->dst - x->dst_stride;
+
+    if (num%4==0 && pbi->common.filter_level)
+    {
+        for (i=0; i<4; i++)
+            Left[i] = pbi->mt_yleft_col[mb_row][num + i];
+    }else
+    {
+        Left[0] = (*(x->base_dst))[x->dst - 1];
+        Left[1] = (*(x->base_dst))[x->dst - 1 + x->dst_stride];
+        Left[2] = (*(x->base_dst))[x->dst - 1 + 2 * x->dst_stride];
+        Left[3] = (*(x->base_dst))[x->dst - 1 + 3 * x->dst_stride];
+    }
+
+    if ((num==4 || num==8 || num==12) && pbi->common.filter_level)
+        top_left = pbi->mt_yleft_col[mb_row][num-1];
+    else
+        top_left = Above[-1];
+
+     switch (b_mode)
+    {
+    case B_DC_PRED:
+    {
+        int expected_dc = 0;
+
+        for (i = 0; i < 4; i++)
+        {
+            expected_dc += Above[i];
+            expected_dc += Left[i];
+        }
+
+        expected_dc = (expected_dc + 4) >> 3;
+
+        for (r = 0; r < 4; r++)
+        {
+            for (c = 0; c < 4; c++)
+            {
+                predictor[c] = expected_dc;
+            }
+
+            predictor += 16;
+        }
+    }
+    break;
+    case B_TM_PRED:
+    {
+        // prediction similar to true_motion prediction
+        for (r = 0; r < 4; r++)
+        {
+            for (c = 0; c < 4; c++)
+            {
+                int pred = Above[c] - top_left + Left[r];
+
+                if (pred < 0)
+                    pred = 0;
+
+                if (pred > 255)
+                    pred = 255;
+
+                predictor[c] = pred;
+            }
+
+            predictor += 16;
+        }
+    }
+    break;
+
+    case B_VE_PRED:
+    {
+
+        unsigned int ap[4];
+        ap[0] = (top_left  + 2 * Above[0] + Above[1] + 2) >> 2;
+        ap[1] = (Above[0] + 2 * Above[1] + Above[2] + 2) >> 2;
+        ap[2] = (Above[1] + 2 * Above[2] + Above[3] + 2) >> 2;
+        ap[3] = (Above[2] + 2 * Above[3] + Above[4] + 2) >> 2;
+
+        for (r = 0; r < 4; r++)
+        {
+            for (c = 0; c < 4; c++)
+            {
+
+                predictor[c] = ap[c];
+            }
+
+            predictor += 16;
+        }
+
+    }
+    break;
+
+
+    case B_HE_PRED:
+    {
+
+        unsigned int lp[4];
+        lp[0] = (top_left + 2 * Left[0] + Left[1] + 2) >> 2;
+        lp[1] = (Left[0] + 2 * Left[1] + Left[2] + 2) >> 2;
+        lp[2] = (Left[1] + 2 * Left[2] + Left[3] + 2) >> 2;
+        lp[3] = (Left[2] + 2 * Left[3] + Left[3] + 2) >> 2;
+
+        for (r = 0; r < 4; r++)
+        {
+            for (c = 0; c < 4; c++)
+            {
+                predictor[c] = lp[r];
+            }
+
+            predictor += 16;
+        }
+    }
+    break;
+    case B_LD_PRED:
+    {
+        unsigned char *ptr = Above;
+        predictor[0 * 16 + 0] = (ptr[0] + ptr[1] * 2 + ptr[2] + 2) >> 2;
+        predictor[0 * 16 + 1] =
+            predictor[1 * 16 + 0] = (ptr[1] + ptr[2] * 2 + ptr[3] + 2) >> 2;
+        predictor[0 * 16 + 2] =
+            predictor[1 * 16 + 1] =
+                predictor[2 * 16 + 0] = (ptr[2] + ptr[3] * 2 + ptr[4] + 2) >> 2;
+        predictor[0 * 16 + 3] =
+            predictor[1 * 16 + 2] =
+                predictor[2 * 16 + 1] =
+                    predictor[3 * 16 + 0] = (ptr[3] + ptr[4] * 2 + ptr[5] + 2) >> 2;
+        predictor[1 * 16 + 3] =
+            predictor[2 * 16 + 2] =
+                predictor[3 * 16 + 1] = (ptr[4] + ptr[5] * 2 + ptr[6] + 2) >> 2;
+        predictor[2 * 16 + 3] =
+            predictor[3 * 16 + 2] = (ptr[5] + ptr[6] * 2 + ptr[7] + 2) >> 2;
+        predictor[3 * 16 + 3] = (ptr[6] + ptr[7] * 2 + ptr[7] + 2) >> 2;
+
+    }
+    break;
+    case B_RD_PRED:
+    {
+
+        unsigned char pp[9];
+
+        pp[0] = Left[3];
+        pp[1] = Left[2];
+        pp[2] = Left[1];
+        pp[3] = Left[0];
+        pp[4] = top_left;
+        pp[5] = Above[0];
+        pp[6] = Above[1];
+        pp[7] = Above[2];
+        pp[8] = Above[3];
+
+        predictor[3 * 16 + 0] = (pp[0] + pp[1] * 2 + pp[2] + 2) >> 2;
+        predictor[3 * 16 + 1] =
+            predictor[2 * 16 + 0] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2;
+        predictor[3 * 16 + 2] =
+            predictor[2 * 16 + 1] =
+                predictor[1 * 16 + 0] = (pp[2] + pp[3] * 2 + pp[4] + 2) >> 2;
+        predictor[3 * 16 + 3] =
+            predictor[2 * 16 + 2] =
+                predictor[1 * 16 + 1] =
+                    predictor[0 * 16 + 0] = (pp[3] + pp[4] * 2 + pp[5] + 2) >> 2;
+        predictor[2 * 16 + 3] =
+            predictor[1 * 16 + 2] =
+                predictor[0 * 16 + 1] = (pp[4] + pp[5] * 2 + pp[6] + 2) >> 2;
+        predictor[1 * 16 + 3] =
+            predictor[0 * 16 + 2] = (pp[5] + pp[6] * 2 + pp[7] + 2) >> 2;
+        predictor[0 * 16 + 3] = (pp[6] + pp[7] * 2 + pp[8] + 2) >> 2;
+
+    }
+    break;
+    case B_VR_PRED:
+    {
+
+        unsigned char pp[9];
+
+        pp[0] = Left[3];
+        pp[1] = Left[2];
+        pp[2] = Left[1];
+        pp[3] = Left[0];
+        pp[4] = top_left;
+        pp[5] = Above[0];
+        pp[6] = Above[1];
+        pp[7] = Above[2];
+        pp[8] = Above[3];
+
+
+        predictor[3 * 16 + 0] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2;
+        predictor[2 * 16 + 0] = (pp[2] + pp[3] * 2 + pp[4] + 2) >> 2;
+        predictor[3 * 16 + 1] =
+            predictor[1 * 16 + 0] = (pp[3] + pp[4] * 2 + pp[5] + 2) >> 2;
+        predictor[2 * 16 + 1] =
+            predictor[0 * 16 + 0] = (pp[4] + pp[5] + 1) >> 1;
+        predictor[3 * 16 + 2] =
+            predictor[1 * 16 + 1] = (pp[4] + pp[5] * 2 + pp[6] + 2) >> 2;
+        predictor[2 * 16 + 2] =
+            predictor[0 * 16 + 1] = (pp[5] + pp[6] + 1) >> 1;
+        predictor[3 * 16 + 3] =
+            predictor[1 * 16 + 2] = (pp[5] + pp[6] * 2 + pp[7] + 2) >> 2;
+        predictor[2 * 16 + 3] =
+            predictor[0 * 16 + 2] = (pp[6] + pp[7] + 1) >> 1;
+        predictor[1 * 16 + 3] = (pp[6] + pp[7] * 2 + pp[8] + 2) >> 2;
+        predictor[0 * 16 + 3] = (pp[7] + pp[8] + 1) >> 1;
+
+    }
+    break;
+    case B_VL_PRED:
+    {
+
+        unsigned char *pp = Above;
+
+        predictor[0 * 16 + 0] = (pp[0] + pp[1] + 1) >> 1;
+        predictor[1 * 16 + 0] = (pp[0] + pp[1] * 2 + pp[2] + 2) >> 2;
+        predictor[2 * 16 + 0] =
+            predictor[0 * 16 + 1] = (pp[1] + pp[2] + 1) >> 1;
+        predictor[1 * 16 + 1] =
+            predictor[3 * 16 + 0] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2;
+        predictor[2 * 16 + 1] =
+            predictor[0 * 16 + 2] = (pp[2] + pp[3] + 1) >> 1;
+        predictor[3 * 16 + 1] =
+            predictor[1 * 16 + 2] = (pp[2] + pp[3] * 2 + pp[4] + 2) >> 2;
+        predictor[0 * 16 + 3] =
+            predictor[2 * 16 + 2] = (pp[3] + pp[4] + 1) >> 1;
+        predictor[1 * 16 + 3] =
+            predictor[3 * 16 + 2] = (pp[3] + pp[4] * 2 + pp[5] + 2) >> 2;
+        predictor[2 * 16 + 3] = (pp[4] + pp[5] * 2 + pp[6] + 2) >> 2;
+        predictor[3 * 16 + 3] = (pp[5] + pp[6] * 2 + pp[7] + 2) >> 2;
+    }
+    break;
+
+    case B_HD_PRED:
+    {
+        unsigned char pp[9];
+        pp[0] = Left[3];
+        pp[1] = Left[2];
+        pp[2] = Left[1];
+        pp[3] = Left[0];
+        pp[4] = top_left;
+        pp[5] = Above[0];
+        pp[6] = Above[1];
+        pp[7] = Above[2];
+        pp[8] = Above[3];
+
+
+        predictor[3 * 16 + 0] = (pp[0] + pp[1] + 1) >> 1;
+        predictor[3 * 16 + 1] = (pp[0] + pp[1] * 2 + pp[2] + 2) >> 2;
+        predictor[2 * 16 + 0] =
+            predictor[3 * 16 + 2] = (pp[1] + pp[2] + 1) >> 1;
+        predictor[2 * 16 + 1] =
+            predictor[3 * 16 + 3] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2;
+        predictor[2 * 16 + 2] =
+            predictor[1 * 16 + 0] = (pp[2] + pp[3] + 1) >> 1;
+        predictor[2 * 16 + 3] =
+            predictor[1 * 16 + 1] = (pp[2] + pp[3] * 2 + pp[4] + 2) >> 2;
+        predictor[1 * 16 + 2] =
+            predictor[0 * 16 + 0] = (pp[3] + pp[4] + 1) >> 1;
+        predictor[1 * 16 + 3] =
+            predictor[0 * 16 + 1] = (pp[3] + pp[4] * 2 + pp[5] + 2) >> 2;
+        predictor[0 * 16 + 2] = (pp[4] + pp[5] * 2 + pp[6] + 2) >> 2;
+        predictor[0 * 16 + 3] = (pp[5] + pp[6] * 2 + pp[7] + 2) >> 2;
+    }
+    break;
+
+
+    case B_HU_PRED:
+    {
+        unsigned char *pp = Left;
+        predictor[0 * 16 + 0] = (pp[0] + pp[1] + 1) >> 1;
+        predictor[0 * 16 + 1] = (pp[0] + pp[1] * 2 + pp[2] + 2) >> 2;
+        predictor[0 * 16 + 2] =
+            predictor[1 * 16 + 0] = (pp[1] + pp[2] + 1) >> 1;
+        predictor[0 * 16 + 3] =
+            predictor[1 * 16 + 1] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2;
+        predictor[1 * 16 + 2] =
+            predictor[2 * 16 + 0] = (pp[2] + pp[3] + 1) >> 1;
+        predictor[1 * 16 + 3] =
+            predictor[2 * 16 + 1] = (pp[2] + pp[3] * 2 + pp[3] + 2) >> 2;
+        predictor[2 * 16 + 2] =
+            predictor[2 * 16 + 3] =
+                predictor[3 * 16 + 0] =
+                    predictor[3 * 16 + 1] =
+                        predictor[3 * 16 + 2] =
+                            predictor[3 * 16 + 3] = pp[3];
+    }
+    break;
+
+
+    }
+#else
+    (void) pbi;
+    (void) xd;
+    (void) b_mode;
+    (void) predictor;
+    (void) mb_row;
+    (void) mb_col;
+    (void) num;
+#endif
+}
+
+// copy 4 bytes from the above right down so that the 4x4 prediction modes using pixels above and
+// to the right prediction have filled in pixels to use.
+void vp8mt_intra_prediction_down_copy(VP8D_COMP *pbi, MACROBLOCKD *x, int mb_row, int mb_col)
+{
+#if CONFIG_MULTITHREAD
+    unsigned char *above_right;   // = *(x->block[0].base_dst) + x->block[0].dst - x->block[0].dst_stride + 16;
+    unsigned int *src_ptr;
+    unsigned int *dst_ptr0;
+    unsigned int *dst_ptr1;
+    unsigned int *dst_ptr2;
+
+    if (pbi->common.filter_level)
+        above_right = pbi->mt_yabove_row[mb_row] + mb_col*16 + 32 +16;
+    else
+        above_right = *(x->block[0].base_dst) + x->block[0].dst - x->block[0].dst_stride + 16;
+
+    src_ptr = (unsigned int *)above_right;
+    //dst_ptr0 = (unsigned int *)(above_right + 4 * x->block[0].dst_stride);
+    //dst_ptr1 = (unsigned int *)(above_right + 8 * x->block[0].dst_stride);
+    //dst_ptr2 = (unsigned int *)(above_right + 12 * x->block[0].dst_stride);
+    dst_ptr0 = (unsigned int *)(*(x->block[0].base_dst) + x->block[0].dst + 16 + 3 * x->block[0].dst_stride);
+    dst_ptr1 = (unsigned int *)(*(x->block[0].base_dst) + x->block[0].dst + 16 + 7 * x->block[0].dst_stride);
+    dst_ptr2 = (unsigned int *)(*(x->block[0].base_dst) + x->block[0].dst + 16 + 11 * x->block[0].dst_stride);
+    *dst_ptr0 = *src_ptr;
+    *dst_ptr1 = *src_ptr;
+    *dst_ptr2 = *src_ptr;
+#else
+    (void) pbi;
+    (void) x;
+    (void) mb_row;
+    (void) mb_col;
+#endif
+}