blob: ee5f0e56c773f8b9a612c0cbf7072e2f2d2cda99 [file] [log] [blame]
/*
* 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 <assert.h>
#include <math.h>
#include <limits.h>
#include "vp9/common/vp9_alloccommon.h"
#include "vp9/common/vp9_common.h"
#include "vp9/common/vp9_onyxc_int.h"
#include "vp9/common/vp9_quant_common.h"
#include "vp9/common/vp9_reconinter.h"
#include "vp9/encoder/vp9_encodeframe.h"
#include "vp9/encoder/vp9_ethread.h"
#include "vp9/encoder/vp9_extend.h"
#include "vp9/encoder/vp9_firstpass.h"
#include "vp9/encoder/vp9_mcomp.h"
#include "vp9/encoder/vp9_encoder.h"
#include "vp9/encoder/vp9_quantize.h"
#include "vp9/encoder/vp9_ratectrl.h"
#include "vp9/encoder/vp9_segmentation.h"
#include "vp9/encoder/vp9_temporal_filter.h"
#include "vpx_dsp/vpx_dsp_common.h"
#include "vpx_mem/vpx_mem.h"
#include "vpx_ports/mem.h"
#include "vpx_ports/vpx_timer.h"
#include "vpx_scale/vpx_scale.h"
static int fixed_divide[512];
static unsigned int index_mult[14] = {
0, 0, 0, 0, 49152, 39322, 32768, 28087, 24576, 21846, 19661, 17874, 0, 15124
};
static void temporal_filter_predictors_mb_c(
MACROBLOCKD *xd, uint8_t *y_mb_ptr, uint8_t *u_mb_ptr, uint8_t *v_mb_ptr,
int stride, int uv_block_width, int uv_block_height, int mv_row, int mv_col,
uint8_t *pred, struct scale_factors *scale, int x, int y, MV *blk_mvs,
int use_32x32) {
const int which_mv = 0;
const InterpKernel *const kernel = vp9_filter_kernels[EIGHTTAP_SHARP];
int i, j, k = 0, ys = (BH >> 1), xs = (BW >> 1);
enum mv_precision mv_precision_uv;
int uv_stride;
if (uv_block_width == (BW >> 1)) {
uv_stride = (stride + 1) >> 1;
mv_precision_uv = MV_PRECISION_Q4;
} else {
uv_stride = stride;
mv_precision_uv = MV_PRECISION_Q3;
}
#if !CONFIG_VP9_HIGHBITDEPTH
(void)xd;
#endif
if (use_32x32) {
const MV mv = { mv_row, mv_col };
#if CONFIG_VP9_HIGHBITDEPTH
if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
vp9_highbd_build_inter_predictor(CONVERT_TO_SHORTPTR(y_mb_ptr), stride,
CONVERT_TO_SHORTPTR(&pred[0]), BW, &mv,
scale, BW, BH, which_mv, kernel,
MV_PRECISION_Q3, x, y, xd->bd);
vp9_highbd_build_inter_predictor(
CONVERT_TO_SHORTPTR(u_mb_ptr), uv_stride,
CONVERT_TO_SHORTPTR(&pred[BLK_PELS]), uv_block_width, &mv, scale,
uv_block_width, uv_block_height, which_mv, kernel, mv_precision_uv, x,
y, xd->bd);
vp9_highbd_build_inter_predictor(
CONVERT_TO_SHORTPTR(v_mb_ptr), uv_stride,
CONVERT_TO_SHORTPTR(&pred[(BLK_PELS << 1)]), uv_block_width, &mv,
scale, uv_block_width, uv_block_height, which_mv, kernel,
mv_precision_uv, x, y, xd->bd);
return;
}
#endif // CONFIG_VP9_HIGHBITDEPTH
vp9_build_inter_predictor(y_mb_ptr, stride, &pred[0], BW, &mv, scale, BW,
BH, which_mv, kernel, MV_PRECISION_Q3, x, y);
vp9_build_inter_predictor(u_mb_ptr, uv_stride, &pred[BLK_PELS],
uv_block_width, &mv, scale, uv_block_width,
uv_block_height, which_mv, kernel,
mv_precision_uv, x, y);
vp9_build_inter_predictor(v_mb_ptr, uv_stride, &pred[(BLK_PELS << 1)],
uv_block_width, &mv, scale, uv_block_width,
uv_block_height, which_mv, kernel,
mv_precision_uv, x, y);
return;
}
// While use_32x32 = 0, construct the 32x32 predictor using 4 16x16
// predictors.
// Y predictor
for (i = 0; i < BH; i += ys) {
for (j = 0; j < BW; j += xs) {
const MV mv = blk_mvs[k];
const int y_offset = i * stride + j;
const int p_offset = i * BW + j;
#if CONFIG_VP9_HIGHBITDEPTH
if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
vp9_highbd_build_inter_predictor(
CONVERT_TO_SHORTPTR(y_mb_ptr + y_offset), stride,
CONVERT_TO_SHORTPTR(&pred[p_offset]), BW, &mv, scale, xs, ys,
which_mv, kernel, MV_PRECISION_Q3, x, y, xd->bd);
} else {
vp9_build_inter_predictor(y_mb_ptr + y_offset, stride, &pred[p_offset],
BW, &mv, scale, xs, ys, which_mv, kernel,
MV_PRECISION_Q3, x, y);
}
#else
vp9_build_inter_predictor(y_mb_ptr + y_offset, stride, &pred[p_offset],
BW, &mv, scale, xs, ys, which_mv, kernel,
MV_PRECISION_Q3, x, y);
#endif // CONFIG_VP9_HIGHBITDEPTH
k++;
}
}
// U and V predictors
ys = (uv_block_height >> 1);
xs = (uv_block_width >> 1);
k = 0;
for (i = 0; i < uv_block_height; i += ys) {
for (j = 0; j < uv_block_width; j += xs) {
const MV mv = blk_mvs[k];
const int uv_offset = i * uv_stride + j;
const int p_offset = i * uv_block_width + j;
#if CONFIG_VP9_HIGHBITDEPTH
if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
vp9_highbd_build_inter_predictor(
CONVERT_TO_SHORTPTR(u_mb_ptr + uv_offset), uv_stride,
CONVERT_TO_SHORTPTR(&pred[BLK_PELS + p_offset]), uv_block_width,
&mv, scale, xs, ys, which_mv, kernel, mv_precision_uv, x, y,
xd->bd);
vp9_highbd_build_inter_predictor(
CONVERT_TO_SHORTPTR(v_mb_ptr + uv_offset), uv_stride,
CONVERT_TO_SHORTPTR(&pred[(BLK_PELS << 1) + p_offset]),
uv_block_width, &mv, scale, xs, ys, which_mv, kernel,
mv_precision_uv, x, y, xd->bd);
} else {
vp9_build_inter_predictor(u_mb_ptr + uv_offset, uv_stride,
&pred[BLK_PELS + p_offset], uv_block_width,
&mv, scale, xs, ys, which_mv, kernel,
mv_precision_uv, x, y);
vp9_build_inter_predictor(v_mb_ptr + uv_offset, uv_stride,
&pred[(BLK_PELS << 1) + p_offset],
uv_block_width, &mv, scale, xs, ys, which_mv,
kernel, mv_precision_uv, x, y);
}
#else
vp9_build_inter_predictor(u_mb_ptr + uv_offset, uv_stride,
&pred[BLK_PELS + p_offset], uv_block_width, &mv,
scale, xs, ys, which_mv, kernel,
mv_precision_uv, x, y);
vp9_build_inter_predictor(v_mb_ptr + uv_offset, uv_stride,
&pred[(BLK_PELS << 1) + p_offset],
uv_block_width, &mv, scale, xs, ys, which_mv,
kernel, mv_precision_uv, x, y);
#endif // CONFIG_VP9_HIGHBITDEPTH
k++;
}
}
}
void vp9_temporal_filter_init(void) {
int i;
fixed_divide[0] = 0;
for (i = 1; i < 512; ++i) fixed_divide[i] = 0x80000 / i;
}
static INLINE int mod_index(int sum_dist, int index, int rounding, int strength,
int filter_weight) {
int mod;
assert(index >= 0 && index <= 13);
assert(index_mult[index] != 0);
mod =
((unsigned int)clamp(sum_dist, 0, UINT16_MAX) * index_mult[index]) >> 16;
mod += rounding;
mod >>= strength;
mod = VPXMIN(16, mod);
mod = 16 - mod;
mod *= filter_weight;
return mod;
}
static INLINE int get_filter_weight(unsigned int i, unsigned int j,
unsigned int block_height,
unsigned int block_width,
const int *const blk_fw, int use_32x32) {
int filter_weight = 0;
if (use_32x32)
// blk_fw[0] ~ blk_fw[3] are the same.
return blk_fw[0];
if (i < block_height / 2) {
if (j < block_width / 2)
filter_weight = blk_fw[0];
else
filter_weight = blk_fw[1];
} else {
if (j < block_width / 2)
filter_weight = blk_fw[2];
else
filter_weight = blk_fw[3];
}
return filter_weight;
}
void vp9_apply_temporal_filter_c(
const uint8_t *y_frame1, int y_stride, const uint8_t *y_pred,
int y_buf_stride, const uint8_t *u_frame1, const uint8_t *v_frame1,
int uv_stride, const uint8_t *u_pred, const uint8_t *v_pred,
int uv_buf_stride, unsigned int block_width, unsigned int block_height,
int ss_x, int ss_y, int strength, const int *const blk_fw, int use_32x32,
uint32_t *y_accumulator, uint16_t *y_count, uint32_t *u_accumulator,
uint16_t *u_count, uint32_t *v_accumulator, uint16_t *v_count) {
unsigned int i, j, k, m;
int modifier;
const int rounding = (1 << strength) >> 1;
const unsigned int uv_block_width = block_width >> ss_x;
const unsigned int uv_block_height = block_height >> ss_y;
DECLARE_ALIGNED(16, uint16_t, y_diff_sse[BLK_PELS]);
DECLARE_ALIGNED(16, uint16_t, u_diff_sse[BLK_PELS]);
DECLARE_ALIGNED(16, uint16_t, v_diff_sse[BLK_PELS]);
int idx = 0, idy;
assert(strength >= 0);
assert(strength <= 6);
memset(y_diff_sse, 0, BLK_PELS * sizeof(uint16_t));
memset(u_diff_sse, 0, BLK_PELS * sizeof(uint16_t));
memset(v_diff_sse, 0, BLK_PELS * sizeof(uint16_t));
// Calculate diff^2 for each pixel of the 16x16 block.
// TODO(yunqing): the following code needs to be optimized.
for (i = 0; i < block_height; i++) {
for (j = 0; j < block_width; j++) {
const int16_t diff =
y_frame1[i * (int)y_stride + j] - y_pred[i * (int)block_width + j];
y_diff_sse[idx++] = diff * diff;
}
}
idx = 0;
for (i = 0; i < uv_block_height; i++) {
for (j = 0; j < uv_block_width; j++) {
const int16_t diffu =
u_frame1[i * uv_stride + j] - u_pred[i * uv_buf_stride + j];
const int16_t diffv =
v_frame1[i * uv_stride + j] - v_pred[i * uv_buf_stride + j];
u_diff_sse[idx] = diffu * diffu;
v_diff_sse[idx] = diffv * diffv;
idx++;
}
}
for (i = 0, k = 0, m = 0; i < block_height; i++) {
for (j = 0; j < block_width; j++) {
const int pixel_value = y_pred[i * y_buf_stride + j];
int filter_weight =
get_filter_weight(i, j, block_height, block_width, blk_fw, use_32x32);
// non-local mean approach
int y_index = 0;
const int uv_r = i >> ss_y;
const int uv_c = j >> ss_x;
modifier = 0;
for (idy = -1; idy <= 1; ++idy) {
for (idx = -1; idx <= 1; ++idx) {
const int row = (int)i + idy;
const int col = (int)j + idx;
if (row >= 0 && row < (int)block_height && col >= 0 &&
col < (int)block_width) {
modifier += y_diff_sse[row * (int)block_width + col];
++y_index;
}
}
}
assert(y_index > 0);
modifier += u_diff_sse[uv_r * uv_block_width + uv_c];
modifier += v_diff_sse[uv_r * uv_block_width + uv_c];
y_index += 2;
modifier =
mod_index(modifier, y_index, rounding, strength, filter_weight);
y_count[k] += modifier;
y_accumulator[k] += modifier * pixel_value;
++k;
// Process chroma component
if (!(i & ss_y) && !(j & ss_x)) {
const int u_pixel_value = u_pred[uv_r * uv_buf_stride + uv_c];
const int v_pixel_value = v_pred[uv_r * uv_buf_stride + uv_c];
// non-local mean approach
int cr_index = 0;
int u_mod = 0, v_mod = 0;
int y_diff = 0;
for (idy = -1; idy <= 1; ++idy) {
for (idx = -1; idx <= 1; ++idx) {
const int row = uv_r + idy;
const int col = uv_c + idx;
if (row >= 0 && row < (int)uv_block_height && col >= 0 &&
col < (int)uv_block_width) {
u_mod += u_diff_sse[row * uv_block_width + col];
v_mod += v_diff_sse[row * uv_block_width + col];
++cr_index;
}
}
}
assert(cr_index > 0);
for (idy = 0; idy < 1 + ss_y; ++idy) {
for (idx = 0; idx < 1 + ss_x; ++idx) {
const int row = (uv_r << ss_y) + idy;
const int col = (uv_c << ss_x) + idx;
y_diff += y_diff_sse[row * (int)block_width + col];
++cr_index;
}
}
u_mod += y_diff;
v_mod += y_diff;
u_mod = mod_index(u_mod, cr_index, rounding, strength, filter_weight);
v_mod = mod_index(v_mod, cr_index, rounding, strength, filter_weight);
u_count[m] += u_mod;
u_accumulator[m] += u_mod * u_pixel_value;
v_count[m] += v_mod;
v_accumulator[m] += v_mod * v_pixel_value;
++m;
} // Complete YUV pixel
}
}
}
// TODO(any): This function is not used anymore. Should be removed.
void vp9_temporal_filter_apply_c(const uint8_t *frame1, unsigned int stride,
const uint8_t *frame2,
unsigned int block_width,
unsigned int block_height, int strength,
int filter_weight, uint32_t *accumulator,
uint16_t *count) {
unsigned int i, j, k;
int modifier;
int byte = 0;
const int rounding = (1 << strength) >> 1;
assert(strength >= 0);
assert(strength <= 6);
assert(filter_weight >= 0);
assert(filter_weight <= 2);
for (i = 0, k = 0; i < block_height; i++) {
for (j = 0; j < block_width; j++, k++) {
int pixel_value = *frame2;
// non-local mean approach
int diff_sse[9] = { 0 };
int idx, idy, index = 0;
for (idy = -1; idy <= 1; ++idy) {
for (idx = -1; idx <= 1; ++idx) {
int row = (int)i + idy;
int col = (int)j + idx;
if (row >= 0 && row < (int)block_height && col >= 0 &&
col < (int)block_width) {
int diff = frame1[byte + idy * (int)stride + idx] -
frame2[idy * (int)block_width + idx];
diff_sse[index] = diff * diff;
++index;
}
}
}
assert(index > 0);
modifier = 0;
for (idx = 0; idx < 9; ++idx) modifier += diff_sse[idx];
modifier *= 3;
modifier /= index;
++frame2;
modifier += rounding;
modifier >>= strength;
if (modifier > 16) modifier = 16;
modifier = 16 - modifier;
modifier *= filter_weight;
count[k] += modifier;
accumulator[k] += modifier * pixel_value;
byte++;
}
byte += stride - block_width;
}
}
#if CONFIG_VP9_HIGHBITDEPTH
void vp9_highbd_temporal_filter_apply_c(
const uint8_t *frame1_8, unsigned int stride, const uint8_t *frame2_8,
unsigned int block_width, unsigned int block_height, int strength,
int *blk_fw, int use_32x32, uint32_t *accumulator, uint16_t *count) {
const uint16_t *frame1 = CONVERT_TO_SHORTPTR(frame1_8);
const uint16_t *frame2 = CONVERT_TO_SHORTPTR(frame2_8);
unsigned int i, j, k;
int modifier;
const int rounding = strength > 0 ? 1 << (strength - 1) : 0;
int diff_sse[BLK_PELS] = { 0 };
int this_idx = 0;
for (i = 0; i < block_height; i++) {
for (j = 0; j < block_width; j++) {
const int diff =
frame1[i * (int)stride + j] - frame2[i * (int)block_width + j];
diff_sse[this_idx++] = diff * diff;
}
}
modifier = 0;
for (i = 0, k = 0; i < block_height; i++) {
for (j = 0; j < block_width; j++, k++) {
int pixel_value = frame2[i * (int)block_width + j];
int filter_weight =
get_filter_weight(i, j, block_height, block_width, blk_fw, use_32x32);
int idx, idy, index = 0;
for (idy = -1; idy <= 1; ++idy) {
for (idx = -1; idx <= 1; ++idx) {
int row = (int)i + idy;
int col = (int)j + idx;
if (row >= 0 && row < (int)block_height && col >= 0 &&
col < (int)block_width) {
modifier += diff_sse[row * (int)block_width + col];
++index;
}
}
}
assert(index > 0);
modifier *= 3;
modifier /= index;
modifier += rounding;
modifier >>= strength;
if (modifier > 16) modifier = 16;
modifier = 16 - modifier;
modifier *= filter_weight;
count[k] += modifier;
accumulator[k] += modifier * pixel_value;
}
}
}
#endif // CONFIG_VP9_HIGHBITDEPTH
static uint32_t temporal_filter_find_matching_mb_c(
VP9_COMP *cpi, ThreadData *td, uint8_t *arf_frame_buf,
uint8_t *frame_ptr_buf, int stride, MV *ref_mv, MV *blk_mvs,
int *blk_bestsme) {
MACROBLOCK *const x = &td->mb;
MACROBLOCKD *const xd = &x->e_mbd;
MV_SPEED_FEATURES *const mv_sf = &cpi->sf.mv;
const SEARCH_METHODS search_method = MESH;
const SEARCH_METHODS search_method_16 = cpi->sf.temporal_filter_search_method;
int step_param;
int sadpb = x->sadperbit16;
uint32_t bestsme = UINT_MAX;
uint32_t distortion;
uint32_t sse;
int cost_list[5];
const MvLimits tmp_mv_limits = x->mv_limits;
MV best_ref_mv1 = { 0, 0 };
MV best_ref_mv1_full; /* full-pixel value of best_ref_mv1 */
// Save input state
struct buf_2d src = x->plane[0].src;
struct buf_2d pre = xd->plane[0].pre[0];
int i, j, k = 0;
best_ref_mv1_full.col = best_ref_mv1.col >> 3;
best_ref_mv1_full.row = best_ref_mv1.row >> 3;
// Setup frame pointers
x->plane[0].src.buf = arf_frame_buf;
x->plane[0].src.stride = stride;
xd->plane[0].pre[0].buf = frame_ptr_buf;
xd->plane[0].pre[0].stride = stride;
step_param = mv_sf->reduce_first_step_size;
step_param = VPXMIN(step_param, MAX_MVSEARCH_STEPS - 2);
vp9_set_mv_search_range(&x->mv_limits, &best_ref_mv1);
vp9_full_pixel_search(cpi, x, TF_BLOCK, &best_ref_mv1_full, step_param,
search_method, sadpb, cond_cost_list(cpi, cost_list),
&best_ref_mv1, ref_mv, 0, 0);
/* restore UMV window */
x->mv_limits = tmp_mv_limits;
// find_fractional_mv_step parameters: best_ref_mv1 is for mv rate cost
// calculation. The start full mv and the search result are stored in
// ref_mv.
bestsme = cpi->find_fractional_mv_step(
x, ref_mv, &best_ref_mv1, cpi->common.allow_high_precision_mv,
x->errorperbit, &cpi->fn_ptr[TF_BLOCK], 0, mv_sf->subpel_search_level,
cond_cost_list(cpi, cost_list), NULL, NULL, &distortion, &sse, NULL, BW,
BH, USE_8_TAPS_SHARP);
// DO motion search on 4 16x16 sub_blocks.
best_ref_mv1.row = ref_mv->row;
best_ref_mv1.col = ref_mv->col;
best_ref_mv1_full.col = best_ref_mv1.col >> 3;
best_ref_mv1_full.row = best_ref_mv1.row >> 3;
for (i = 0; i < BH; i += SUB_BH) {
for (j = 0; j < BW; j += SUB_BW) {
// Setup frame pointers
x->plane[0].src.buf = arf_frame_buf + i * stride + j;
x->plane[0].src.stride = stride;
xd->plane[0].pre[0].buf = frame_ptr_buf + i * stride + j;
xd->plane[0].pre[0].stride = stride;
vp9_set_mv_search_range(&x->mv_limits, &best_ref_mv1);
vp9_full_pixel_search(cpi, x, TF_SUB_BLOCK, &best_ref_mv1_full,
step_param, search_method_16, sadpb,
cond_cost_list(cpi, cost_list), &best_ref_mv1,
&blk_mvs[k], 0, 0);
/* restore UMV window */
x->mv_limits = tmp_mv_limits;
blk_bestsme[k] = cpi->find_fractional_mv_step(
x, &blk_mvs[k], &best_ref_mv1, cpi->common.allow_high_precision_mv,
x->errorperbit, &cpi->fn_ptr[TF_SUB_BLOCK], 0,
mv_sf->subpel_search_level, cond_cost_list(cpi, cost_list), NULL,
NULL, &distortion, &sse, NULL, SUB_BW, SUB_BH, USE_8_TAPS_SHARP);
k++;
}
}
// Restore input state
x->plane[0].src = src;
xd->plane[0].pre[0] = pre;
return bestsme;
}
void vp9_temporal_filter_iterate_row_c(VP9_COMP *cpi, ThreadData *td,
int mb_row, int mb_col_start,
int mb_col_end) {
ARNRFilterData *arnr_filter_data = &cpi->arnr_filter_data;
YV12_BUFFER_CONFIG **frames = arnr_filter_data->frames;
int frame_count = arnr_filter_data->frame_count;
int alt_ref_index = arnr_filter_data->alt_ref_index;
int strength = arnr_filter_data->strength;
struct scale_factors *scale = &arnr_filter_data->sf;
int byte;
int frame;
int mb_col;
int mb_cols = (frames[alt_ref_index]->y_crop_width + BW - 1) >> BW_LOG2;
int mb_rows = (frames[alt_ref_index]->y_crop_height + BH - 1) >> BH_LOG2;
DECLARE_ALIGNED(16, uint32_t, accumulator[BLK_PELS * 3]);
DECLARE_ALIGNED(16, uint16_t, count[BLK_PELS * 3]);
MACROBLOCKD *mbd = &td->mb.e_mbd;
YV12_BUFFER_CONFIG *f = frames[alt_ref_index];
uint8_t *dst1, *dst2;
#if CONFIG_VP9_HIGHBITDEPTH
DECLARE_ALIGNED(16, uint16_t, predictor16[BLK_PELS * 3]);
DECLARE_ALIGNED(16, uint8_t, predictor8[BLK_PELS * 3]);
uint8_t *predictor;
#else
DECLARE_ALIGNED(16, uint8_t, predictor[BLK_PELS * 3]);
#endif
const int mb_uv_height = BH >> mbd->plane[1].subsampling_y;
const int mb_uv_width = BW >> mbd->plane[1].subsampling_x;
// Addition of the tile col level offsets
int mb_y_offset = mb_row * BH * (f->y_stride) + BW * mb_col_start;
int mb_uv_offset =
mb_row * mb_uv_height * f->uv_stride + mb_uv_width * mb_col_start;
#if CONFIG_VP9_HIGHBITDEPTH
if (mbd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
predictor = CONVERT_TO_BYTEPTR(predictor16);
} else {
predictor = predictor8;
}
#endif
// Source frames are extended to 16 pixels. This is different than
// L/A/G reference frames that have a border of 32 (VP9ENCBORDERINPIXELS)
// A 6/8 tap filter is used for motion search. This requires 2 pixels
// before and 3 pixels after. So the largest Y mv on a border would
// then be 16 - VP9_INTERP_EXTEND. The UV blocks are half the size of the
// Y and therefore only extended by 8. The largest mv that a UV block
// can support is 8 - VP9_INTERP_EXTEND. A UV mv is half of a Y mv.
// (16 - VP9_INTERP_EXTEND) >> 1 which is greater than
// 8 - VP9_INTERP_EXTEND.
// To keep the mv in play for both Y and UV planes the max that it
// can be on a border is therefore 16 - (2*VP9_INTERP_EXTEND+1).
td->mb.mv_limits.row_min = -((mb_row * BH) + (17 - 2 * VP9_INTERP_EXTEND));
td->mb.mv_limits.row_max =
((mb_rows - 1 - mb_row) * BH) + (17 - 2 * VP9_INTERP_EXTEND);
for (mb_col = mb_col_start; mb_col < mb_col_end; mb_col++) {
int i, j, k;
int stride;
MV ref_mv;
vp9_zero_array(accumulator, BLK_PELS * 3);
vp9_zero_array(count, BLK_PELS * 3);
td->mb.mv_limits.col_min = -((mb_col * BW) + (17 - 2 * VP9_INTERP_EXTEND));
td->mb.mv_limits.col_max =
((mb_cols - 1 - mb_col) * BW) + (17 - 2 * VP9_INTERP_EXTEND);
if (cpi->oxcf.content == VP9E_CONTENT_FILM) {
unsigned int src_variance;
struct buf_2d src;
src.buf = f->y_buffer + mb_y_offset;
src.stride = f->y_stride;
#if CONFIG_VP9_HIGHBITDEPTH
if (mbd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
src_variance =
vp9_high_get_sby_perpixel_variance(cpi, &src, TF_BLOCK, mbd->bd);
} else {
src_variance = vp9_get_sby_perpixel_variance(cpi, &src, TF_BLOCK);
}
#else
src_variance = vp9_get_sby_perpixel_variance(cpi, &src, TF_BLOCK);
#endif // CONFIG_VP9_HIGHBITDEPTH
if (src_variance <= 2) {
strength = VPXMAX(0, arnr_filter_data->strength - 2);
}
}
for (frame = 0; frame < frame_count; frame++) {
// MVs for 4 16x16 sub blocks.
MV blk_mvs[4];
// Filter weights for 4 16x16 sub blocks.
int blk_fw[4] = { 0, 0, 0, 0 };
int use_32x32 = 0;
if (frames[frame] == NULL) continue;
ref_mv.row = 0;
ref_mv.col = 0;
blk_mvs[0] = kZeroMv;
blk_mvs[1] = kZeroMv;
blk_mvs[2] = kZeroMv;
blk_mvs[3] = kZeroMv;
if (frame == alt_ref_index) {
blk_fw[0] = blk_fw[1] = blk_fw[2] = blk_fw[3] = 2;
use_32x32 = 1;
} else {
const int thresh_low = 10000;
const int thresh_high = 20000;
int blk_bestsme[4] = { INT_MAX, INT_MAX, INT_MAX, INT_MAX };
// Find best match in this frame by MC
int err = temporal_filter_find_matching_mb_c(
cpi, td, frames[alt_ref_index]->y_buffer + mb_y_offset,
frames[frame]->y_buffer + mb_y_offset, frames[frame]->y_stride,
&ref_mv, blk_mvs, blk_bestsme);
int err16 =
blk_bestsme[0] + blk_bestsme[1] + blk_bestsme[2] + blk_bestsme[3];
int max_err = INT_MIN, min_err = INT_MAX;
for (k = 0; k < 4; k++) {
if (min_err > blk_bestsme[k]) min_err = blk_bestsme[k];
if (max_err < blk_bestsme[k]) max_err = blk_bestsme[k];
}
if (((err * 15 < (err16 << 4)) && max_err - min_err < 10000) ||
((err * 14 < (err16 << 4)) && max_err - min_err < 5000)) {
use_32x32 = 1;
// Assign higher weight to matching MB if it's error
// score is lower. If not applying MC default behavior
// is to weight all MBs equal.
blk_fw[0] = err < (thresh_low << THR_SHIFT)
? 2
: err < (thresh_high << THR_SHIFT) ? 1 : 0;
blk_fw[1] = blk_fw[2] = blk_fw[3] = blk_fw[0];
} else {
use_32x32 = 0;
for (k = 0; k < 4; k++)
blk_fw[k] = blk_bestsme[k] < thresh_low
? 2
: blk_bestsme[k] < thresh_high ? 1 : 0;
}
for (k = 0; k < 4; k++) {
switch (abs(frame - alt_ref_index)) {
case 1: blk_fw[k] = VPXMIN(blk_fw[k], 2); break;
case 2:
case 3: blk_fw[k] = VPXMIN(blk_fw[k], 1); break;
default: break;
}
}
}
if (blk_fw[0] || blk_fw[1] || blk_fw[2] || blk_fw[3]) {
// Construct the predictors
temporal_filter_predictors_mb_c(
mbd, frames[frame]->y_buffer + mb_y_offset,
frames[frame]->u_buffer + mb_uv_offset,
frames[frame]->v_buffer + mb_uv_offset, frames[frame]->y_stride,
mb_uv_width, mb_uv_height, ref_mv.row, ref_mv.col, predictor, scale,
mb_col * BW, mb_row * BH, blk_mvs, use_32x32);
#if CONFIG_VP9_HIGHBITDEPTH
if (mbd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
int adj_strength = strength + 2 * (mbd->bd - 8);
// Apply the filter (YUV)
vp9_highbd_temporal_filter_apply(
f->y_buffer + mb_y_offset, f->y_stride, predictor, BW, BH,
adj_strength, blk_fw, use_32x32, accumulator, count);
vp9_highbd_temporal_filter_apply(
f->u_buffer + mb_uv_offset, f->uv_stride, predictor + BLK_PELS,
mb_uv_width, mb_uv_height, adj_strength, blk_fw, use_32x32,
accumulator + BLK_PELS, count + BLK_PELS);
vp9_highbd_temporal_filter_apply(
f->v_buffer + mb_uv_offset, f->uv_stride,
predictor + (BLK_PELS << 1), mb_uv_width, mb_uv_height,
adj_strength, blk_fw, use_32x32, accumulator + (BLK_PELS << 1),
count + (BLK_PELS << 1));
} else {
// Apply the filter (YUV)
vp9_apply_temporal_filter(
f->y_buffer + mb_y_offset, f->y_stride, predictor, BW,
f->u_buffer + mb_uv_offset, f->v_buffer + mb_uv_offset,
f->uv_stride, predictor + BLK_PELS, predictor + (BLK_PELS << 1),
mb_uv_width, BW, BH, mbd->plane[1].subsampling_x,
mbd->plane[1].subsampling_y, strength, blk_fw, use_32x32,
accumulator, count, accumulator + BLK_PELS, count + BLK_PELS,
accumulator + (BLK_PELS << 1), count + (BLK_PELS << 1));
}
#else
// Apply the filter (YUV)
vp9_apply_temporal_filter(
f->y_buffer + mb_y_offset, f->y_stride, predictor, BW,
f->u_buffer + mb_uv_offset, f->v_buffer + mb_uv_offset,
f->uv_stride, predictor + BLK_PELS, predictor + (BLK_PELS << 1),
mb_uv_width, BW, BH, mbd->plane[1].subsampling_x,
mbd->plane[1].subsampling_y, strength, blk_fw, use_32x32,
accumulator, count, accumulator + BLK_PELS, count + BLK_PELS,
accumulator + (BLK_PELS << 1), count + (BLK_PELS << 1));
#endif // CONFIG_VP9_HIGHBITDEPTH
}
}
#if CONFIG_VP9_HIGHBITDEPTH
if (mbd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
uint16_t *dst1_16;
uint16_t *dst2_16;
// Normalize filter output to produce AltRef frame
dst1 = cpi->alt_ref_buffer.y_buffer;
dst1_16 = CONVERT_TO_SHORTPTR(dst1);
stride = cpi->alt_ref_buffer.y_stride;
byte = mb_y_offset;
for (i = 0, k = 0; i < BH; i++) {
for (j = 0; j < BW; j++, k++) {
unsigned int pval = accumulator[k] + (count[k] >> 1);
pval *= fixed_divide[count[k]];
pval >>= 19;
dst1_16[byte] = (uint16_t)pval;
// move to next pixel
byte++;
}
byte += stride - BW;
}
dst1 = cpi->alt_ref_buffer.u_buffer;
dst2 = cpi->alt_ref_buffer.v_buffer;
dst1_16 = CONVERT_TO_SHORTPTR(dst1);
dst2_16 = CONVERT_TO_SHORTPTR(dst2);
stride = cpi->alt_ref_buffer.uv_stride;
byte = mb_uv_offset;
for (i = 0, k = BLK_PELS; i < mb_uv_height; i++) {
for (j = 0; j < mb_uv_width; j++, k++) {
int m = k + BLK_PELS;
// U
unsigned int pval = accumulator[k] + (count[k] >> 1);
pval *= fixed_divide[count[k]];
pval >>= 19;
dst1_16[byte] = (uint16_t)pval;
// V
pval = accumulator[m] + (count[m] >> 1);
pval *= fixed_divide[count[m]];
pval >>= 19;
dst2_16[byte] = (uint16_t)pval;
// move to next pixel
byte++;
}
byte += stride - mb_uv_width;
}
} else {
// Normalize filter output to produce AltRef frame
dst1 = cpi->alt_ref_buffer.y_buffer;
stride = cpi->alt_ref_buffer.y_stride;
byte = mb_y_offset;
for (i = 0, k = 0; i < BH; i++) {
for (j = 0; j < BW; j++, k++) {
unsigned int pval = accumulator[k] + (count[k] >> 1);
pval *= fixed_divide[count[k]];
pval >>= 19;
dst1[byte] = (uint8_t)pval;
// move to next pixel
byte++;
}
byte += stride - BW;
}
dst1 = cpi->alt_ref_buffer.u_buffer;
dst2 = cpi->alt_ref_buffer.v_buffer;
stride = cpi->alt_ref_buffer.uv_stride;
byte = mb_uv_offset;
for (i = 0, k = BLK_PELS; i < mb_uv_height; i++) {
for (j = 0; j < mb_uv_width; j++, k++) {
int m = k + BLK_PELS;
// U
unsigned int pval = accumulator[k] + (count[k] >> 1);
pval *= fixed_divide[count[k]];
pval >>= 19;
dst1[byte] = (uint8_t)pval;
// V
pval = accumulator[m] + (count[m] >> 1);
pval *= fixed_divide[count[m]];
pval >>= 19;
dst2[byte] = (uint8_t)pval;
// move to next pixel
byte++;
}
byte += stride - mb_uv_width;
}
}
#else
// Normalize filter output to produce AltRef frame
dst1 = cpi->alt_ref_buffer.y_buffer;
stride = cpi->alt_ref_buffer.y_stride;
byte = mb_y_offset;
for (i = 0, k = 0; i < BH; i++) {
for (j = 0; j < BW; j++, k++) {
unsigned int pval = accumulator[k] + (count[k] >> 1);
pval *= fixed_divide[count[k]];
pval >>= 19;
dst1[byte] = (uint8_t)pval;
// move to next pixel
byte++;
}
byte += stride - BW;
}
dst1 = cpi->alt_ref_buffer.u_buffer;
dst2 = cpi->alt_ref_buffer.v_buffer;
stride = cpi->alt_ref_buffer.uv_stride;
byte = mb_uv_offset;
for (i = 0, k = BLK_PELS; i < mb_uv_height; i++) {
for (j = 0; j < mb_uv_width; j++, k++) {
int m = k + BLK_PELS;
// U
unsigned int pval = accumulator[k] + (count[k] >> 1);
pval *= fixed_divide[count[k]];
pval >>= 19;
dst1[byte] = (uint8_t)pval;
// V
pval = accumulator[m] + (count[m] >> 1);
pval *= fixed_divide[count[m]];
pval >>= 19;
dst2[byte] = (uint8_t)pval;
// move to next pixel
byte++;
}
byte += stride - mb_uv_width;
}
#endif // CONFIG_VP9_HIGHBITDEPTH
mb_y_offset += BW;
mb_uv_offset += mb_uv_width;
}
}
static void temporal_filter_iterate_tile_c(VP9_COMP *cpi, int tile_row,
int tile_col) {
VP9_COMMON *const cm = &cpi->common;
const int tile_cols = 1 << cm->log2_tile_cols;
TileInfo *tile_info =
&cpi->tile_data[tile_row * tile_cols + tile_col].tile_info;
const int mb_row_start = (tile_info->mi_row_start) >> TF_SHIFT;
const int mb_row_end = (tile_info->mi_row_end + TF_ROUND) >> TF_SHIFT;
const int mb_col_start = (tile_info->mi_col_start) >> TF_SHIFT;
const int mb_col_end = (tile_info->mi_col_end + TF_ROUND) >> TF_SHIFT;
int mb_row;
for (mb_row = mb_row_start; mb_row < mb_row_end; mb_row++) {
vp9_temporal_filter_iterate_row_c(cpi, &cpi->td, mb_row, mb_col_start,
mb_col_end);
}
}
static void temporal_filter_iterate_c(VP9_COMP *cpi) {
VP9_COMMON *const cm = &cpi->common;
const int tile_cols = 1 << cm->log2_tile_cols;
const int tile_rows = 1 << cm->log2_tile_rows;
int tile_row, tile_col;
vp9_init_tile_data(cpi);
for (tile_row = 0; tile_row < tile_rows; ++tile_row) {
for (tile_col = 0; tile_col < tile_cols; ++tile_col) {
temporal_filter_iterate_tile_c(cpi, tile_row, tile_col);
}
}
}
// Apply buffer limits and context specific adjustments to arnr filter.
static void adjust_arnr_filter(VP9_COMP *cpi, int distance, int group_boost,
int *arnr_frames, int *arnr_strength) {
const VP9EncoderConfig *const oxcf = &cpi->oxcf;
const GF_GROUP *const gf_group = &cpi->twopass.gf_group;
const int frames_after_arf =
vp9_lookahead_depth(cpi->lookahead) - distance - 1;
int frames_fwd = (cpi->oxcf.arnr_max_frames - 1) >> 1;
int frames_bwd;
int q, frames, base_strength, strength;
// Context dependent two pass adjustment to strength.
if (oxcf->pass == 2) {
base_strength = oxcf->arnr_strength + cpi->twopass.arnr_strength_adjustment;
// Clip to allowed range.
base_strength = VPXMIN(6, VPXMAX(0, base_strength));
} else {
base_strength = oxcf->arnr_strength;
}
// Define the forward and backwards filter limits for this arnr group.
if (frames_fwd > frames_after_arf) frames_fwd = frames_after_arf;
if (frames_fwd > distance) frames_fwd = distance;
frames_bwd = frames_fwd;
// For even length filter there is one more frame backward
// than forward: e.g. len=6 ==> bbbAff, len=7 ==> bbbAfff.
if (frames_bwd < distance) frames_bwd += (oxcf->arnr_max_frames + 1) & 0x1;
// Set the baseline active filter size.
frames = frames_bwd + 1 + frames_fwd;
// Adjust the strength based on active max q.
if (cpi->common.current_video_frame > 1)
q = ((int)vp9_convert_qindex_to_q(cpi->rc.avg_frame_qindex[INTER_FRAME],
cpi->common.bit_depth));
else
q = ((int)vp9_convert_qindex_to_q(cpi->rc.avg_frame_qindex[KEY_FRAME],
cpi->common.bit_depth));
if (q > 16) {
strength = base_strength;
} else {
strength = base_strength - ((16 - q) / 2);
if (strength < 0) strength = 0;
}
// Adjust number of frames in filter and strength based on gf boost level.
if (frames > group_boost / 150) {
frames = group_boost / 150;
frames += !(frames & 1);
}
if (strength > group_boost / 300) {
strength = group_boost / 300;
}
// Adjustments for second level arf in multi arf case.
// Leave commented out place holder for possible filtering adjustment with
// new multi-layer arf code.
// if (cpi->oxcf.pass == 2 && cpi->multi_arf_allowed)
// if (gf_group->rf_level[gf_group->index] != GF_ARF_STD) strength >>= 1;
// TODO(jingning): Skip temporal filtering for intermediate frames that will
// be used as show_existing_frame. Need to further explore the possibility to
// apply certain filter.
if (gf_group->arf_src_offset[gf_group->index] <
cpi->rc.baseline_gf_interval - 1)
frames = 1;
*arnr_frames = frames;
*arnr_strength = strength;
}
void vp9_temporal_filter(VP9_COMP *cpi, int distance) {
VP9_COMMON *const cm = &cpi->common;
RATE_CONTROL *const rc = &cpi->rc;
MACROBLOCKD *const xd = &cpi->td.mb.e_mbd;
ARNRFilterData *arnr_filter_data = &cpi->arnr_filter_data;
int frame;
int frames_to_blur;
int start_frame;
int strength;
int frames_to_blur_backward;
int frames_to_blur_forward;
struct scale_factors *sf = &arnr_filter_data->sf;
YV12_BUFFER_CONFIG **frames = arnr_filter_data->frames;
int rdmult;
// Apply context specific adjustments to the arnr filter parameters.
adjust_arnr_filter(cpi, distance, rc->gfu_boost, &frames_to_blur, &strength);
frames_to_blur_backward = (frames_to_blur / 2);
frames_to_blur_forward = ((frames_to_blur - 1) / 2);
start_frame = distance + frames_to_blur_forward;
arnr_filter_data->strength = strength;
arnr_filter_data->frame_count = frames_to_blur;
arnr_filter_data->alt_ref_index = frames_to_blur_backward;
// Setup frame pointers, NULL indicates frame not included in filter.
for (frame = 0; frame < frames_to_blur; ++frame) {
const int which_buffer = start_frame - frame;
struct lookahead_entry *buf =
vp9_lookahead_peek(cpi->lookahead, which_buffer);
frames[frames_to_blur - 1 - frame] = &buf->img;
}
if (frames_to_blur > 0) {
// Setup scaling factors. Scaling on each of the arnr frames is not
// supported.
if (cpi->use_svc) {
// In spatial svc the scaling factors might be less then 1/2.
// So we will use non-normative scaling.
int frame_used = 0;
#if CONFIG_VP9_HIGHBITDEPTH
vp9_setup_scale_factors_for_frame(
sf, get_frame_new_buffer(cm)->y_crop_width,
get_frame_new_buffer(cm)->y_crop_height,
get_frame_new_buffer(cm)->y_crop_width,
get_frame_new_buffer(cm)->y_crop_height, cm->use_highbitdepth);
#else
vp9_setup_scale_factors_for_frame(
sf, get_frame_new_buffer(cm)->y_crop_width,
get_frame_new_buffer(cm)->y_crop_height,
get_frame_new_buffer(cm)->y_crop_width,
get_frame_new_buffer(cm)->y_crop_height);
#endif // CONFIG_VP9_HIGHBITDEPTH
for (frame = 0; frame < frames_to_blur; ++frame) {
if (cm->mi_cols * MI_SIZE != frames[frame]->y_width ||
cm->mi_rows * MI_SIZE != frames[frame]->y_height) {
if (vpx_realloc_frame_buffer(&cpi->svc.scaled_frames[frame_used],
cm->width, cm->height, cm->subsampling_x,
cm->subsampling_y,
#if CONFIG_VP9_HIGHBITDEPTH
cm->use_highbitdepth,
#endif
VP9_ENC_BORDER_IN_PIXELS,
cm->byte_alignment, NULL, NULL, NULL)) {
vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR,
"Failed to reallocate alt_ref_buffer");
}
frames[frame] = vp9_scale_if_required(
cm, frames[frame], &cpi->svc.scaled_frames[frame_used], 0,
EIGHTTAP, 0);
++frame_used;
}
}
cm->mi = cm->mip + cm->mi_stride + 1;
xd->mi = cm->mi_grid_visible;
xd->mi[0] = cm->mi;
} else {
// ARF is produced at the native frame size and resized when coded.
#if CONFIG_VP9_HIGHBITDEPTH
vp9_setup_scale_factors_for_frame(
sf, frames[0]->y_crop_width, frames[0]->y_crop_height,
frames[0]->y_crop_width, frames[0]->y_crop_height,
cm->use_highbitdepth);
#else
vp9_setup_scale_factors_for_frame(
sf, frames[0]->y_crop_width, frames[0]->y_crop_height,
frames[0]->y_crop_width, frames[0]->y_crop_height);
#endif // CONFIG_VP9_HIGHBITDEPTH
}
}
// Initialize errorperbit and sabperbit.
rdmult = vp9_compute_rd_mult_based_on_qindex(cpi, ARNR_FILT_QINDEX);
set_error_per_bit(&cpi->td.mb, rdmult);
vp9_initialize_me_consts(cpi, &cpi->td.mb, ARNR_FILT_QINDEX);
if (!cpi->row_mt)
temporal_filter_iterate_c(cpi);
else
vp9_temporal_filter_row_mt(cpi);
}