ref: 6e364a57c0bf7477b35284e7acbcf776e1d5ec3e
dir: /vp8/decoder/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 "vp8/common/reconintra.h"
#include "vpx_mem/vpx_mem.h"
#include "onyxd_int.h"
/* For skip_recon_mb(), add vp8_build_intra_predictors_mby_s(MACROBLOCKD *xd)
* and vp8_build_intra_predictors_mbuv_s(MACROBLOCKD *xd).
*/
void vp8mt_build_intra_predictors_mby(VP8D_COMP *pbi, MACROBLOCKD *xd,
int mb_row, int mb_col) {
unsigned char *yabove_row; /* = xd->dst.y_buffer - xd->dst.y_stride; */
unsigned char *yleft_col;
unsigned char yleft_buf[16];
unsigned char ytop_left; /* = yabove_row[-1]; */
unsigned char *ypred_ptr = xd->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 = xd->dst.y_buffer - xd->dst.y_stride;
for (i = 0; i < 16; i++)
yleft_buf[i] = xd->dst.y_buffer [i * xd->dst.y_stride - 1];
yleft_col = yleft_buf;
}
ytop_left = yabove_row[-1];
/* for Y */
switch (xd->mode_info_context->mbmi.mode) {
case DC_PRED: {
int expected_dc;
int i;
int shift;
int average = 0;
if (xd->up_available || xd->left_available) {
if (xd->up_available) {
for (i = 0; i < 16; i++) {
average += yabove_row[i];
}
}
if (xd->left_available) {
for (i = 0; i < 16; i++) {
average += yleft_col[i];
}
}
shift = 3 + xd->up_available + xd->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;
}
}
void vp8mt_build_intra_predictors_mby_s(VP8D_COMP *pbi, MACROBLOCKD *xd,
int mb_row, int mb_col) {
unsigned char *yabove_row; /* = xd->dst.y_buffer - xd->dst.y_stride; */
unsigned char *yleft_col;
unsigned char yleft_buf[16];
unsigned char ytop_left; /* = yabove_row[-1]; */
unsigned char *ypred_ptr = xd->predictor;
int r, c, i;
int y_stride = xd->dst.y_stride;
ypred_ptr = xd->dst.y_buffer; /*xd->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 = xd->dst.y_buffer - xd->dst.y_stride;
for (i = 0; i < 16; i++)
yleft_buf[i] = xd->dst.y_buffer [i * xd->dst.y_stride - 1];
yleft_col = yleft_buf;
}
ytop_left = yabove_row[-1];
/* for Y */
switch (xd->mode_info_context->mbmi.mode) {
case DC_PRED: {
int expected_dc;
int i;
int shift;
int average = 0;
if (xd->up_available || xd->left_available) {
if (xd->up_available) {
for (i = 0; i < 16; i++) {
average += yabove_row[i];
}
}
if (xd->left_available) {
for (i = 0; i < 16; i++) {
average += yleft_col[i];
}
}
shift = 3 + xd->up_available + xd->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;
}
}
void vp8mt_build_intra_predictors_mbuv(VP8D_COMP *pbi, MACROBLOCKD *xd,
int mb_row, int mb_col) {
unsigned char *uabove_row; /* = xd->dst.u_buffer - xd->dst.uv_stride; */
unsigned char *uleft_col; /*[16];*/
unsigned char uleft_buf[8];
unsigned char utop_left; /* = uabove_row[-1]; */
unsigned char *vabove_row; /* = xd->dst.v_buffer - xd->dst.uv_stride; */
unsigned char *vleft_col; /*[20];*/
unsigned char vleft_buf[8];
unsigned char vtop_left; /* = vabove_row[-1]; */
unsigned char *upred_ptr = &xd->predictor[256];
unsigned char *vpred_ptr = &xd->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 = xd->dst.u_buffer - xd->dst.uv_stride;
vabove_row = xd->dst.v_buffer - xd->dst.uv_stride;
for (i = 0; i < 8; i++) {
uleft_buf[i] = xd->dst.u_buffer [i * xd->dst.uv_stride - 1];
vleft_buf[i] = xd->dst.v_buffer [i * xd->dst.uv_stride - 1];
}
uleft_col = uleft_buf;
vleft_col = vleft_buf;
}
utop_left = uabove_row[-1];
vtop_left = vabove_row[-1];
switch (xd->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 (xd->up_available) {
for (i = 0; i < 8; i++) {
Uaverage += uabove_row[i];
Vaverage += vabove_row[i];
}
}
if (xd->left_available) {
for (i = 0; i < 8; i++) {
Uaverage += uleft_col[i];
Vaverage += vleft_col[i];
}
}
if (!xd->up_available && !xd->left_available) {
expected_udc = 128;
expected_vdc = 128;
} else {
shift = 2 + xd->up_available + xd->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;
}
}
void vp8mt_build_intra_predictors_mbuv_s(VP8D_COMP *pbi, MACROBLOCKD *xd,
int mb_row, int mb_col) {
unsigned char *uabove_row; /* = xd->dst.u_buffer - xd->dst.uv_stride; */
unsigned char *uleft_col; /*[16];*/
unsigned char uleft_buf[8];
unsigned char utop_left; /* = uabove_row[-1]; */
unsigned char *vabove_row; /* = xd->dst.v_buffer - xd->dst.uv_stride; */
unsigned char *vleft_col; /*[20];*/
unsigned char vleft_buf[8];
unsigned char vtop_left; /* = vabove_row[-1]; */
unsigned char *upred_ptr = xd->dst.u_buffer; /*&xd->predictor[256];*/
unsigned char *vpred_ptr = xd->dst.v_buffer; /*&xd->predictor[320];*/
int uv_stride = xd->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 = xd->dst.u_buffer - xd->dst.uv_stride;
vabove_row = xd->dst.v_buffer - xd->dst.uv_stride;
for (i = 0; i < 8; i++) {
uleft_buf[i] = xd->dst.u_buffer [i * xd->dst.uv_stride - 1];
vleft_buf[i] = xd->dst.v_buffer [i * xd->dst.uv_stride - 1];
}
uleft_col = uleft_buf;
vleft_col = vleft_buf;
}
utop_left = uabove_row[-1];
vtop_left = vabove_row[-1];
switch (xd->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 (xd->up_available) {
for (i = 0; i < 8; i++) {
Uaverage += uabove_row[i];
Vaverage += vabove_row[i];
}
}
if (xd->left_available) {
for (i = 0; i < 8; i++) {
Uaverage += uleft_col[i];
Vaverage += vleft_col[i];
}
}
if (!xd->up_available && !xd->left_available) {
expected_udc = 128;
expected_vdc = 128;
} else {
shift = 2 + xd->up_available + xd->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;
}
}
void vp8mt_predict_intra4x4(VP8D_COMP *pbi,
MACROBLOCKD *xd,
int b_mode,
unsigned char *predictor,
int mb_row,
int mb_col,
int num) {
int i, r, c;
unsigned char *Above; /* = *(xd->base_dst) + xd->dst - xd->dst_stride; */
unsigned char Left[4];
unsigned char top_left; /* = Above[-1]; */
BLOCKD *blockd = &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 = *(blockd->base_dst) + blockd->dst - blockd->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] = (*(blockd->base_dst))[blockd->dst - 1];
Left[1] = (*(blockd->base_dst))[blockd->dst - 1 + blockd->dst_stride];
Left[2] = (*(blockd->base_dst))[blockd->dst - 1 + 2 * blockd->dst_stride];
Left[3] = (*(blockd->base_dst))[blockd->dst - 1 + 3 * blockd->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;
}
}
/* 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 *xd,
int mb_row, int mb_col) {
unsigned char *above_right; // = *(xd->block[0].base_dst) +
// xd->block[0].dst -
// xd->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 = *(xd->block[0].base_dst) + xd->block[0].dst -
xd->block[0].dst_stride + 16;
src_ptr = (unsigned int *)above_right;
/*dst_ptr0 = (unsigned int *)(above_right + 4 * xd->block[0].dst_stride);
dst_ptr1 = (unsigned int *)(above_right + 8 * xd->block[0].dst_stride);
dst_ptr2 = (unsigned int *)(above_right + 12 * xd->block[0].dst_stride);*/
dst_ptr0 = (unsigned int *)(*(xd->block[0].base_dst) + xd->block[0].dst +
16 + 3 * xd->block[0].dst_stride);
dst_ptr1 = (unsigned int *)(*(xd->block[0].base_dst) + xd->block[0].dst +
16 + 7 * xd->block[0].dst_stride);
dst_ptr2 = (unsigned int *)(*(xd->block[0].base_dst) + xd->block[0].dst +
16 + 11 * xd->block[0].dst_stride);
*dst_ptr0 = *src_ptr;
*dst_ptr1 = *src_ptr;
*dst_ptr2 = *src_ptr;
}