ref: cd6f742980f1962d1ac6da98bbf32ab419725ff2
dir: /vp8/common/reconinter.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 <limits.h>
#include <string.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) {
memcpy(dst, src, 16);
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) {
memcpy(dst, src, 8);
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) {
memcpy(dst, src, 8);
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);
}
}