c67873989f
Change-Id: Ia1cce221f8511561b9cbd8edb7726fbc286ff243
297 lines
11 KiB
C
297 lines
11 KiB
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 "vp9/common/vp9_findnearmv.h"
|
|
#include "vp9/common/vp9_sadmxn.h"
|
|
#include "vp9/common/vp9_subpelvar.h"
|
|
#include <limits.h>
|
|
|
|
const unsigned char vp9_mbsplit_offset[4][16] = {
|
|
{ 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
|
{ 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
|
{ 0, 2, 8, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
|
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
|
|
};
|
|
|
|
static void lower_mv_precision(int_mv *mv, int usehp)
|
|
{
|
|
if (!usehp || !vp9_use_nmv_hp(&mv->as_mv)) {
|
|
if (mv->as_mv.row & 1)
|
|
mv->as_mv.row += (mv->as_mv.row > 0 ? -1 : 1);
|
|
if (mv->as_mv.col & 1)
|
|
mv->as_mv.col += (mv->as_mv.col > 0 ? -1 : 1);
|
|
}
|
|
}
|
|
|
|
vp9_prob *vp9_mv_ref_probs(VP9_COMMON *pc,
|
|
vp9_prob p[4], const int context
|
|
) {
|
|
p[0] = pc->fc.vp9_mode_contexts[context][0];
|
|
p[1] = pc->fc.vp9_mode_contexts[context][1];
|
|
p[2] = pc->fc.vp9_mode_contexts[context][2];
|
|
p[3] = pc->fc.vp9_mode_contexts[context][3];
|
|
return p;
|
|
}
|
|
|
|
#define SP(x) (((x) & 7) << 1)
|
|
unsigned int vp9_sad3x16_c(const unsigned char *src_ptr,
|
|
int src_stride,
|
|
const unsigned char *ref_ptr,
|
|
int ref_stride) {
|
|
return sad_mx_n_c(src_ptr, src_stride, ref_ptr, ref_stride, 3, 16);
|
|
}
|
|
unsigned int vp9_sad16x3_c(const unsigned char *src_ptr,
|
|
int src_stride,
|
|
const unsigned char *ref_ptr,
|
|
int ref_stride) {
|
|
return sad_mx_n_c(src_ptr, src_stride, ref_ptr, ref_stride, 16, 3);
|
|
}
|
|
|
|
#if CONFIG_SUBPELREFMV
|
|
unsigned int vp9_variance2x16_c(const unsigned char *src_ptr,
|
|
const int source_stride,
|
|
const unsigned char *ref_ptr,
|
|
const int recon_stride,
|
|
unsigned int *sse) {
|
|
int sum;
|
|
variance(src_ptr, source_stride, ref_ptr, recon_stride, 2, 16, sse, &sum);
|
|
return (*sse - (((unsigned int)sum * sum) >> 5));
|
|
}
|
|
|
|
unsigned int vp9_variance16x2_c(const unsigned char *src_ptr,
|
|
const int source_stride,
|
|
const unsigned char *ref_ptr,
|
|
const int recon_stride,
|
|
unsigned int *sse) {
|
|
int sum;
|
|
variance(src_ptr, source_stride, ref_ptr, recon_stride, 16, 2, sse, &sum);
|
|
return (*sse - (((unsigned int)sum * sum) >> 5));
|
|
}
|
|
|
|
unsigned int vp9_sub_pixel_variance16x2_c(const unsigned char *src_ptr,
|
|
const int src_pixels_per_line,
|
|
const int xoffset,
|
|
const int yoffset,
|
|
const unsigned char *dst_ptr,
|
|
const int dst_pixels_per_line,
|
|
unsigned int *sse) {
|
|
unsigned short FData3[16 * 3]; // Temp data buffer used in filtering
|
|
unsigned char temp2[2 * 16];
|
|
const short *HFilter, *VFilter;
|
|
|
|
HFilter = vp9_bilinear_filters[xoffset];
|
|
VFilter = vp9_bilinear_filters[yoffset];
|
|
|
|
var_filter_block2d_bil_first_pass(src_ptr, FData3,
|
|
src_pixels_per_line, 1, 3, 16, HFilter);
|
|
var_filter_block2d_bil_second_pass(FData3, temp2, 16, 16, 2, 16, VFilter);
|
|
|
|
return vp9_variance16x2_c(temp2, 16, dst_ptr, dst_pixels_per_line, sse);
|
|
}
|
|
|
|
unsigned int vp9_sub_pixel_variance2x16_c(const unsigned char *src_ptr,
|
|
const int src_pixels_per_line,
|
|
const int xoffset,
|
|
const int yoffset,
|
|
const unsigned char *dst_ptr,
|
|
const int dst_pixels_per_line,
|
|
unsigned int *sse) {
|
|
unsigned short FData3[2 * 17]; // Temp data buffer used in filtering
|
|
unsigned char temp2[2 * 16];
|
|
const short *HFilter, *VFilter;
|
|
|
|
HFilter = vp9_bilinear_filters[xoffset];
|
|
VFilter = vp9_bilinear_filters[yoffset];
|
|
|
|
var_filter_block2d_bil_first_pass(src_ptr, FData3,
|
|
src_pixels_per_line, 1, 17, 2, HFilter);
|
|
var_filter_block2d_bil_second_pass(FData3, temp2, 2, 2, 16, 2, VFilter);
|
|
|
|
return vp9_variance2x16_c(temp2, 2, dst_ptr, dst_pixels_per_line, sse);
|
|
}
|
|
#endif
|
|
|
|
/* check a list of motion vectors by sad score using a number rows of pixels
|
|
* above and a number cols of pixels in the left to select the one with best
|
|
* score to use as ref motion vector
|
|
*/
|
|
void vp9_find_best_ref_mvs(MACROBLOCKD *xd,
|
|
unsigned char *ref_y_buffer,
|
|
int ref_y_stride,
|
|
int_mv *mvlist,
|
|
int_mv *best_mv,
|
|
int_mv *nearest,
|
|
int_mv *near) {
|
|
int i, j;
|
|
unsigned char *above_src;
|
|
unsigned char *left_src;
|
|
unsigned char *above_ref;
|
|
unsigned char *left_ref;
|
|
unsigned int score;
|
|
unsigned int sse;
|
|
unsigned int ref_scores[MAX_MV_REFS] = {0};
|
|
int_mv sorted_mvs[MAX_MV_REFS];
|
|
int zero_seen = FALSE;
|
|
|
|
// Default all to 0,0 if nothing else available
|
|
best_mv->as_int = nearest->as_int = near->as_int = 0;
|
|
vpx_memset(sorted_mvs, 0, sizeof(sorted_mvs));
|
|
|
|
#if CONFIG_SUBPELREFMV
|
|
above_src = xd->dst.y_buffer - xd->dst.y_stride * 2;
|
|
left_src = xd->dst.y_buffer - 2;
|
|
above_ref = ref_y_buffer - ref_y_stride * 2;
|
|
left_ref = ref_y_buffer - 2;
|
|
#else
|
|
above_src = xd->dst.y_buffer - xd->dst.y_stride * 3;
|
|
left_src = xd->dst.y_buffer - 3;
|
|
above_ref = ref_y_buffer - ref_y_stride * 3;
|
|
left_ref = ref_y_buffer - 3;
|
|
#endif
|
|
|
|
//for(i = 0; i < MAX_MV_REFS; ++i) {
|
|
// Limit search to the predicted best 4
|
|
for(i = 0; i < 4; ++i) {
|
|
int_mv this_mv;
|
|
int offset = 0;
|
|
int row_offset, col_offset;
|
|
|
|
this_mv.as_int = mvlist[i].as_int;
|
|
|
|
// If we see a 0,0 vector for a second time we have reached the end of
|
|
// the list of valid candidate vectors.
|
|
if (!this_mv.as_int && zero_seen)
|
|
break;
|
|
|
|
zero_seen = zero_seen || !this_mv.as_int;
|
|
|
|
clamp_mv(&this_mv,
|
|
xd->mb_to_left_edge - LEFT_TOP_MARGIN + 24,
|
|
xd->mb_to_right_edge + RIGHT_BOTTOM_MARGIN,
|
|
xd->mb_to_top_edge - LEFT_TOP_MARGIN + 24,
|
|
xd->mb_to_bottom_edge + RIGHT_BOTTOM_MARGIN);
|
|
|
|
#if CONFIG_SUBPELREFMV
|
|
row_offset = this_mv.as_mv.row >> 3;
|
|
col_offset = this_mv.as_mv.col >> 3;
|
|
offset = ref_y_stride * row_offset + col_offset;
|
|
score = 0;
|
|
if (xd->up_available) {
|
|
vp9_sub_pixel_variance16x2_c(above_ref + offset, ref_y_stride,
|
|
SP(this_mv.as_mv.col),
|
|
SP(this_mv.as_mv.row),
|
|
above_src, xd->dst.y_stride, &sse);
|
|
score += sse;
|
|
#if CONFIG_SUPERBLOCKS
|
|
if (xd->mode_info_context->mbmi.encoded_as_sb) {
|
|
vp9_sub_pixel_variance16x2_c(above_ref + offset + 16,
|
|
ref_y_stride,
|
|
SP(this_mv.as_mv.col),
|
|
SP(this_mv.as_mv.row),
|
|
above_src + 16, xd->dst.y_stride, &sse);
|
|
score += sse;
|
|
}
|
|
#endif
|
|
}
|
|
if (xd->left_available) {
|
|
vp9_sub_pixel_variance2x16_c(left_ref + offset, ref_y_stride,
|
|
SP(this_mv.as_mv.col),
|
|
SP(this_mv.as_mv.row),
|
|
left_src, xd->dst.y_stride, &sse);
|
|
score += sse;
|
|
#if CONFIG_SUPERBLOCKS
|
|
if (xd->mode_info_context->mbmi.encoded_as_sb) {
|
|
vp9_sub_pixel_variance2x16_c(left_ref + offset + ref_y_stride * 16,
|
|
ref_y_stride,
|
|
SP(this_mv.as_mv.col),
|
|
SP(this_mv.as_mv.row),
|
|
left_src + xd->dst.y_stride * 16,
|
|
xd->dst.y_stride, &sse);
|
|
score += sse;
|
|
}
|
|
#endif
|
|
}
|
|
#else
|
|
row_offset = (this_mv.as_mv.row > 0) ?
|
|
((this_mv.as_mv.row + 3) >> 3):((this_mv.as_mv.row + 4) >> 3);
|
|
col_offset = (this_mv.as_mv.col > 0) ?
|
|
((this_mv.as_mv.col + 3) >> 3):((this_mv.as_mv.col + 4) >> 3);
|
|
offset = ref_y_stride * row_offset + col_offset;
|
|
score = 0;
|
|
if (xd->up_available) {
|
|
score += vp9_sad16x3(above_src, xd->dst.y_stride,
|
|
above_ref + offset, ref_y_stride);
|
|
#if CONFIG_SUPERBLOCKS
|
|
if (xd->mode_info_context->mbmi.encoded_as_sb) {
|
|
score += vp9_sad16x3(above_src + 16, xd->dst.y_stride,
|
|
above_ref + offset + 16, ref_y_stride);
|
|
}
|
|
#endif
|
|
}
|
|
if (xd->left_available) {
|
|
score += vp9_sad3x16(left_src, xd->dst.y_stride,
|
|
left_ref + offset, ref_y_stride);
|
|
#if CONFIG_SUPERBLOCKS
|
|
if (xd->mode_info_context->mbmi.encoded_as_sb) {
|
|
score += vp9_sad3x16(left_src + xd->dst.y_stride * 16,
|
|
xd->dst.y_stride,
|
|
left_ref + offset + ref_y_stride * 16,
|
|
ref_y_stride);
|
|
}
|
|
#endif
|
|
}
|
|
#endif
|
|
// Add the entry to our list and then resort the list on score.
|
|
ref_scores[i] = score;
|
|
sorted_mvs[i].as_int = this_mv.as_int;
|
|
j = i;
|
|
while (j > 0) {
|
|
if (ref_scores[j] < ref_scores[j-1]) {
|
|
ref_scores[j] = ref_scores[j-1];
|
|
sorted_mvs[j].as_int = sorted_mvs[j-1].as_int;
|
|
ref_scores[j-1] = score;
|
|
sorted_mvs[j-1].as_int = this_mv.as_int;
|
|
j--;
|
|
} else
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Make sure all the candidates are properly clamped etc
|
|
for (i = 0; i < 4; ++i) {
|
|
lower_mv_precision(&sorted_mvs[i], xd->allow_high_precision_mv);
|
|
clamp_mv2(&sorted_mvs[i], xd);
|
|
}
|
|
|
|
// Set the best mv to the first entry in the sorted list
|
|
best_mv->as_int = sorted_mvs[0].as_int;
|
|
|
|
// Provided that there are non zero vectors available there will not
|
|
// be more than one 0,0 entry in the sorted list.
|
|
// The best ref mv is always set to the first entry (which gave the best
|
|
// results. The nearest is set to the first non zero vector if available and
|
|
// near to the second non zero vector if available.
|
|
// We do not use 0,0 as a nearest or near as 0,0 has its own mode.
|
|
if ( sorted_mvs[0].as_int ) {
|
|
nearest->as_int = sorted_mvs[0].as_int;
|
|
if ( sorted_mvs[1].as_int )
|
|
near->as_int = sorted_mvs[1].as_int;
|
|
else
|
|
near->as_int = sorted_mvs[2].as_int;
|
|
} else {
|
|
nearest->as_int = sorted_mvs[1].as_int;
|
|
near->as_int = sorted_mvs[2].as_int;
|
|
}
|
|
|
|
// Copy back the re-ordered mv list
|
|
vpx_memcpy(mvlist, sorted_mvs, sizeof(sorted_mvs));
|
|
}
|