Commit 175c313a authored by Yunqing Wang's avatar Yunqing Wang
Browse files

Improve scale_factors struct

The ref's scale_factors are set at frame level, and then copied for
each partition block. Since the struct members are mostly constant,
this patch separated the constant and non-constant members, and
reduced struct copying. This gave 0.5% ~ 1.4% decoder speed gain.

Change-Id: I94043bf5a6995c8042da52e5c661818dfa6f6d4c
parent f6d870f7
......@@ -116,6 +116,7 @@ typedef struct VP9Common {
// Each frame can reference ALLOWED_REFS_PER_FRAME buffers
int active_ref_idx[ALLOWED_REFS_PER_FRAME];
struct scale_factors active_ref_scale[ALLOWED_REFS_PER_FRAME];
struct scale_factors_common active_ref_scale_comm[ALLOWED_REFS_PER_FRAME];
int new_fb_idx;
YV12_BUFFER_CONFIG post_proc_buffer;
......
......@@ -40,6 +40,24 @@ void vp9_setup_interp_filters(MACROBLOCKD *xd,
assert(((intptr_t)xd->subpix.filter_x & 0xff) == 0);
}
static void inter_predictor(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const MV32 *mv,
const struct scale_factors *scale,
int w, int h, int ref,
const struct subpix_fn_table *subpix,
int xs, int ys) {
const int subpel_x = mv->col & SUBPEL_MASK;
const int subpel_y = mv->row & SUBPEL_MASK;
src += (mv->row >> SUBPEL_BITS) * src_stride + (mv->col >> SUBPEL_BITS);
scale->sfc->predict[subpel_x != 0][subpel_y != 0][ref](
src, src_stride, dst, dst_stride,
subpix->filter_x[subpel_x], xs,
subpix->filter_y[subpel_y], ys,
w, h);
}
void vp9_build_inter_predictor(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const MV *src_mv,
......@@ -50,16 +68,11 @@ void vp9_build_inter_predictor(const uint8_t *src, int src_stride,
const int is_q4 = precision == MV_PRECISION_Q4;
const MV mv_q4 = { is_q4 ? src_mv->row : src_mv->row * 2,
is_q4 ? src_mv->col : src_mv->col * 2 };
const MV32 mv = scale->scale_mv(&mv_q4, scale);
const int subpel_x = mv.col & SUBPEL_MASK;
const int subpel_y = mv.row & SUBPEL_MASK;
const struct scale_factors_common *sfc = scale->sfc;
const MV32 mv = sfc->scale_mv(&mv_q4, scale);
src += (mv.row >> SUBPEL_BITS) * src_stride + (mv.col >> SUBPEL_BITS);
scale->predict[subpel_x != 0][subpel_y != 0][ref](
src, src_stride, dst, dst_stride,
subpix->filter_x[subpel_x], scale->x_step_q4,
subpix->filter_y[subpel_y], scale->y_step_q4,
w, h);
inter_predictor(src, src_stride, dst, dst_stride, &mv, scale,
w, h, ref, subpix, sfc->x_step_q4, sfc->y_step_q4);
}
static INLINE int round_mv_comp_q4(int value) {
......@@ -133,10 +146,6 @@ static void build_inter_predictors(int plane, int block, BLOCK_SIZE bsize,
struct scale_factors *const scale = &xd->scale_factor[ref];
struct buf_2d *const pre_buf = &pd->pre[ref];
struct buf_2d *const dst_buf = &pd->dst;
const uint8_t *const pre = pre_buf->buf + scaled_buffer_offset(x, y,
pre_buf->stride, scale);
uint8_t *const dst = dst_buf->buf + dst_buf->stride * y + x;
// TODO(jkoleszar): All chroma MVs in SPLITMV mode are taken as the
......@@ -156,11 +165,29 @@ static void build_inter_predictors(int plane, int block, BLOCK_SIZE bsize,
pd->subsampling_x,
pd->subsampling_y);
scale->set_scaled_offsets(scale, arg->y + y, arg->x + x);
vp9_build_inter_predictor(pre, pre_buf->stride, dst, dst_buf->stride,
&res_mv, scale,
4 << pred_w, 4 << pred_h, ref,
&xd->subpix, MV_PRECISION_Q4);
uint8_t *pre;
// mv_precision precision is MV_PRECISION_Q4.
const MV mv_q4 = {res_mv.row, res_mv.col };
MV32 scaled_mv;
int xs, ys;
if (vp9_is_scaled(scale->sfc)) {
pre = pre_buf->buf + scaled_buffer_offset(x, y, pre_buf->stride, scale);
scale->sfc->set_scaled_offsets(scale, arg->y + y, arg->x + x);
scaled_mv = scale->sfc->scale_mv(&mv_q4, scale);
xs = scale->sfc->x_step_q4;
ys = scale->sfc->y_step_q4;
} else {
pre = pre_buf->buf + (y * pre_buf->stride + x);
scaled_mv.row = mv_q4.row;
scaled_mv.col = mv_q4.col;
xs = ys = 16;
}
inter_predictor(pre, pre_buf->stride, dst, dst_buf->stride,
&scaled_mv, scale,
4 << pred_w, 4 << pred_h, ref,
&xd->subpix, xs, ys);
}
}
......@@ -220,15 +247,17 @@ void vp9_build_inter_predictors_sb(MACROBLOCKD *xd, int mi_row, int mi_col,
void vp9_setup_scale_factors(VP9_COMMON *cm, int i) {
const int ref = cm->active_ref_idx[i];
struct scale_factors *const sf = &cm->active_ref_scale[i];
struct scale_factors_common *const sfc = &cm->active_ref_scale_comm[i];
if (ref >= NUM_YV12_BUFFERS) {
vp9_zero(*sf);
vp9_zero(*sfc);
} else {
YV12_BUFFER_CONFIG *const fb = &cm->yv12_fb[ref];
vp9_setup_scale_factors_for_frame(sf,
vp9_setup_scale_factors_for_frame(sf, sfc,
fb->y_crop_width, fb->y_crop_height,
cm->width, cm->height);
if (vp9_is_scaled(sf))
if (vp9_is_scaled(sfc))
vp9_extend_frame_borders(fb, cm->subsampling_x, cm->subsampling_y);
}
}
......
......@@ -38,8 +38,10 @@ void vp9_build_inter_predictor(const uint8_t *src, int src_stride,
static int scaled_buffer_offset(int x_offset, int y_offset, int stride,
const struct scale_factors *scale) {
const int x = scale ? scale->scale_value_x(x_offset, scale) : x_offset;
const int y = scale ? scale->scale_value_y(y_offset, scale) : y_offset;
const int x = scale ? scale->sfc->scale_value_x(x_offset, scale->sfc) :
x_offset;
const int y = scale ? scale->sfc->scale_value_y(y_offset, scale->sfc) :
y_offset;
return y * stride + x;
}
......
......@@ -12,23 +12,23 @@
#include "vp9/common/vp9_filter.h"
#include "vp9/common/vp9_scale.h"
static INLINE int scaled_x(int val, const struct scale_factors *scale) {
return val * scale->x_scale_fp >> REF_SCALE_SHIFT;
static INLINE int scaled_x(int val, const struct scale_factors_common *sfc) {
return val * sfc->x_scale_fp >> REF_SCALE_SHIFT;
}
static INLINE int scaled_y(int val, const struct scale_factors *scale) {
return val * scale->y_scale_fp >> REF_SCALE_SHIFT;
static INLINE int scaled_y(int val, const struct scale_factors_common *sfc) {
return val * sfc->y_scale_fp >> REF_SCALE_SHIFT;
}
static int unscaled_value(int val, const struct scale_factors *scale) {
(void) scale;
static int unscaled_value(int val, const struct scale_factors_common *sfc) {
(void) sfc;
return val;
}
static MV32 scaled_mv(const MV *mv, const struct scale_factors *scale) {
const MV32 res = {
scaled_y(mv->row, scale) + scale->y_offset_q4,
scaled_x(mv->col, scale) + scale->x_offset_q4
scaled_y(mv->row, scale->sfc) + scale->y_offset_q4,
scaled_x(mv->col, scale->sfc) + scale->x_offset_q4
};
return res;
}
......@@ -43,8 +43,8 @@ static MV32 unscaled_mv(const MV *mv, const struct scale_factors *scale) {
static void set_offsets_with_scaling(struct scale_factors *scale,
int row, int col) {
scale->x_offset_q4 = scaled_x(col << SUBPEL_BITS, scale) & SUBPEL_MASK;
scale->y_offset_q4 = scaled_y(row << SUBPEL_BITS, scale) & SUBPEL_MASK;
scale->x_offset_q4 = scaled_x(col << SUBPEL_BITS, scale->sfc) & SUBPEL_MASK;
scale->y_offset_q4 = scaled_y(row << SUBPEL_BITS, scale->sfc) & SUBPEL_MASK;
}
static void set_offsets_without_scaling(struct scale_factors *scale,
......@@ -70,31 +70,30 @@ static int check_scale_factors(int other_w, int other_h,
}
void vp9_setup_scale_factors_for_frame(struct scale_factors *scale,
struct scale_factors_common *scale_comm,
int other_w, int other_h,
int this_w, int this_h) {
if (!check_scale_factors(other_w, other_h, this_w, this_h)) {
scale->x_scale_fp = REF_INVALID_SCALE;
scale->y_scale_fp = REF_INVALID_SCALE;
scale_comm->x_scale_fp = REF_INVALID_SCALE;
scale_comm->y_scale_fp = REF_INVALID_SCALE;
return;
}
scale->x_scale_fp = get_fixed_point_scale_factor(other_w, this_w);
scale->y_scale_fp = get_fixed_point_scale_factor(other_h, this_h);
scale->x_step_q4 = scaled_x(16, scale);
scale->y_step_q4 = scaled_y(16, scale);
scale->x_offset_q4 = 0; // calculated per block
scale->y_offset_q4 = 0; // calculated per block
scale_comm->x_scale_fp = get_fixed_point_scale_factor(other_w, this_w);
scale_comm->y_scale_fp = get_fixed_point_scale_factor(other_h, this_h);
scale_comm->x_step_q4 = scaled_x(16, scale_comm);
scale_comm->y_step_q4 = scaled_y(16, scale_comm);
if (vp9_is_scaled(scale)) {
scale->scale_value_x = scaled_x;
scale->scale_value_y = scaled_y;
scale->set_scaled_offsets = set_offsets_with_scaling;
scale->scale_mv = scaled_mv;
if (vp9_is_scaled(scale_comm)) {
scale_comm->scale_value_x = scaled_x;
scale_comm->scale_value_y = scaled_y;
scale_comm->set_scaled_offsets = set_offsets_with_scaling;
scale_comm->scale_mv = scaled_mv;
} else {
scale->scale_value_x = unscaled_value;
scale->scale_value_y = unscaled_value;
scale->set_scaled_offsets = set_offsets_without_scaling;
scale->scale_mv = unscaled_mv;
scale_comm->scale_value_x = unscaled_value;
scale_comm->scale_value_y = unscaled_value;
scale_comm->set_scaled_offsets = set_offsets_without_scaling;
scale_comm->scale_mv = unscaled_mv;
}
// TODO(agrange): Investigate the best choice of functions to use here
......@@ -103,44 +102,48 @@ void vp9_setup_scale_factors_for_frame(struct scale_factors *scale,
// applied in one direction only, and not at all for 0,0, seems to give the
// best quality, but it may be worth trying an additional mode that does
// do the filtering on full-pel.
if (scale->x_step_q4 == 16) {
if (scale->y_step_q4 == 16) {
if (scale_comm->x_step_q4 == 16) {
if (scale_comm->y_step_q4 == 16) {
// No scaling in either direction.
scale->predict[0][0][0] = vp9_convolve_copy;
scale->predict[0][0][1] = vp9_convolve_avg;
scale->predict[0][1][0] = vp9_convolve8_vert;
scale->predict[0][1][1] = vp9_convolve8_avg_vert;
scale->predict[1][0][0] = vp9_convolve8_horiz;
scale->predict[1][0][1] = vp9_convolve8_avg_horiz;
scale_comm->predict[0][0][0] = vp9_convolve_copy;
scale_comm->predict[0][0][1] = vp9_convolve_avg;
scale_comm->predict[0][1][0] = vp9_convolve8_vert;
scale_comm->predict[0][1][1] = vp9_convolve8_avg_vert;
scale_comm->predict[1][0][0] = vp9_convolve8_horiz;
scale_comm->predict[1][0][1] = vp9_convolve8_avg_horiz;
} else {
// No scaling in x direction. Must always scale in the y direction.
scale->predict[0][0][0] = vp9_convolve8_vert;
scale->predict[0][0][1] = vp9_convolve8_avg_vert;
scale->predict[0][1][0] = vp9_convolve8_vert;
scale->predict[0][1][1] = vp9_convolve8_avg_vert;
scale->predict[1][0][0] = vp9_convolve8;
scale->predict[1][0][1] = vp9_convolve8_avg;
scale_comm->predict[0][0][0] = vp9_convolve8_vert;
scale_comm->predict[0][0][1] = vp9_convolve8_avg_vert;
scale_comm->predict[0][1][0] = vp9_convolve8_vert;
scale_comm->predict[0][1][1] = vp9_convolve8_avg_vert;
scale_comm->predict[1][0][0] = vp9_convolve8;
scale_comm->predict[1][0][1] = vp9_convolve8_avg;
}
} else {
if (scale->y_step_q4 == 16) {
if (scale_comm->y_step_q4 == 16) {
// No scaling in the y direction. Must always scale in the x direction.
scale->predict[0][0][0] = vp9_convolve8_horiz;
scale->predict[0][0][1] = vp9_convolve8_avg_horiz;
scale->predict[0][1][0] = vp9_convolve8;
scale->predict[0][1][1] = vp9_convolve8_avg;
scale->predict[1][0][0] = vp9_convolve8_horiz;
scale->predict[1][0][1] = vp9_convolve8_avg_horiz;
scale_comm->predict[0][0][0] = vp9_convolve8_horiz;
scale_comm->predict[0][0][1] = vp9_convolve8_avg_horiz;
scale_comm->predict[0][1][0] = vp9_convolve8;
scale_comm->predict[0][1][1] = vp9_convolve8_avg;
scale_comm->predict[1][0][0] = vp9_convolve8_horiz;
scale_comm->predict[1][0][1] = vp9_convolve8_avg_horiz;
} else {
// Must always scale in both directions.
scale->predict[0][0][0] = vp9_convolve8;
scale->predict[0][0][1] = vp9_convolve8_avg;
scale->predict[0][1][0] = vp9_convolve8;
scale->predict[0][1][1] = vp9_convolve8_avg;
scale->predict[1][0][0] = vp9_convolve8;
scale->predict[1][0][1] = vp9_convolve8_avg;
scale_comm->predict[0][0][0] = vp9_convolve8;
scale_comm->predict[0][0][1] = vp9_convolve8_avg;
scale_comm->predict[0][1][0] = vp9_convolve8;
scale_comm->predict[0][1][1] = vp9_convolve8_avg;
scale_comm->predict[1][0][0] = vp9_convolve8;
scale_comm->predict[1][0][1] = vp9_convolve8_avg;
}
}
// 2D subpel motion always gets filtered in both directions
scale->predict[1][1][0] = vp9_convolve8;
scale->predict[1][1][1] = vp9_convolve8_avg;
scale_comm->predict[1][1][0] = vp9_convolve8;
scale_comm->predict[1][1][1] = vp9_convolve8_avg;
scale->sfc = scale_comm;
scale->x_offset_q4 = 0; // calculated per block
scale->y_offset_q4 = 0; // calculated per block
}
......@@ -18,34 +18,40 @@
#define REF_NO_SCALE (1 << REF_SCALE_SHIFT)
#define REF_INVALID_SCALE -1
struct scale_factors {
struct scale_factors;
struct scale_factors_common {
int x_scale_fp; // horizontal fixed point scale factor
int y_scale_fp; // vertical fixed point scale factor
int x_offset_q4;
int x_step_q4;
int y_offset_q4;
int y_step_q4;
int (*scale_value_x)(int val, const struct scale_factors *scale);
int (*scale_value_y)(int val, const struct scale_factors *scale);
int (*scale_value_x)(int val, const struct scale_factors_common *sfc);
int (*scale_value_y)(int val, const struct scale_factors_common *sfc);
void (*set_scaled_offsets)(struct scale_factors *scale, int row, int col);
MV32 (*scale_mv)(const MV *mv, const struct scale_factors *scale);
convolve_fn_t predict[2][2][2]; // horiz, vert, avg
};
struct scale_factors {
int x_offset_q4;
int y_offset_q4;
const struct scale_factors_common *sfc;
};
void vp9_setup_scale_factors_for_frame(struct scale_factors *scale,
struct scale_factors_common *scale_comm,
int other_w, int other_h,
int this_w, int this_h);
static int vp9_is_valid_scale(const struct scale_factors *sf) {
return sf->x_scale_fp != REF_INVALID_SCALE &&
sf->y_scale_fp != REF_INVALID_SCALE;
static int vp9_is_valid_scale(const struct scale_factors_common *sfc) {
return sfc->x_scale_fp != REF_INVALID_SCALE &&
sfc->y_scale_fp != REF_INVALID_SCALE;
}
static int vp9_is_scaled(const struct scale_factors *sf) {
return sf->x_scale_fp != REF_NO_SCALE ||
sf->y_scale_fp != REF_NO_SCALE;
static int vp9_is_scaled(const struct scale_factors_common *sfc) {
return sfc->x_scale_fp != REF_NO_SCALE ||
sfc->y_scale_fp != REF_NO_SCALE;
}
#endif // VP9_COMMON_VP9_SCALE_H_
......@@ -209,13 +209,13 @@ static void set_ref(VP9_COMMON *const cm, MACROBLOCKD *const xd,
MB_MODE_INFO *const mbmi = &xd->mi_8x8[0]->mbmi;
const int ref = mbmi->ref_frame[idx] - LAST_FRAME;
const YV12_BUFFER_CONFIG *cfg = &cm->yv12_fb[cm->active_ref_idx[ref]];
const struct scale_factors *sf = &cm->active_ref_scale[ref];
if (!vp9_is_valid_scale(sf))
const struct scale_factors_common *sfc = &cm->active_ref_scale_comm[ref];
if (!vp9_is_valid_scale(sfc))
vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM,
"Invalid scale factors");
xd->scale_factor[idx] = *sf;
setup_pre_planes(xd, idx, cfg, mi_row, mi_col, sf);
xd->scale_factor[idx].sfc = sfc;
setup_pre_planes(xd, idx, cfg, mi_row, mi_col, &xd->scale_factor[idx]);
xd->corrupted |= cfg->corrupted;
}
......
......@@ -2274,10 +2274,10 @@ static void setup_buffer_inter(VP9_COMP *cpi, MACROBLOCK *x,
scale[frame_type] = cpi->common.active_ref_scale[frame_type - 1];
scale[frame_type].x_offset_q4 =
ROUND_POWER_OF_TWO(mi_col * MI_SIZE * scale[frame_type].x_scale_fp,
ROUND_POWER_OF_TWO(mi_col * MI_SIZE * scale[frame_type].sfc->x_scale_fp,
REF_SCALE_SHIFT) & 0xf;
scale[frame_type].y_offset_q4 =
ROUND_POWER_OF_TWO(mi_row * MI_SIZE * scale[frame_type].y_scale_fp,
ROUND_POWER_OF_TWO(mi_row * MI_SIZE * scale[frame_type].sfc->y_scale_fp,
REF_SCALE_SHIFT) & 0xf;
// TODO(jkoleszar): Is the UV buffer ever used here? If so, need to make this
......@@ -2300,7 +2300,7 @@ static void setup_buffer_inter(VP9_COMP *cpi, MACROBLOCK *x,
// Further refinement that is encode side only to test the top few candidates
// in full and choose the best as the centre point for subsequent searches.
// The current implementation doesn't support scaling.
if (!vp9_is_scaled(&scale[frame_type]) && block_size >= BLOCK_8X8)
if (!vp9_is_scaled(scale[frame_type].sfc) && block_size >= BLOCK_8X8)
mv_pred(cpi, x, yv12_mb[frame_type][0].buf, yv12->y_stride,
frame_type, block_size);
}
......@@ -2507,9 +2507,9 @@ static void joint_motion_search(VP9_COMP *cpi, MACROBLOCK *x,
setup_pre_planes(xd, 1, scaled_ref_frame[1], mi_row, mi_col, NULL);
}
xd->scale_factor[0].set_scaled_offsets(&xd->scale_factor[0],
xd->scale_factor[0].sfc->set_scaled_offsets(&xd->scale_factor[0],
mi_row, mi_col);
xd->scale_factor[1].set_scaled_offsets(&xd->scale_factor[1],
xd->scale_factor[1].sfc->set_scaled_offsets(&xd->scale_factor[1],
mi_row, mi_col);
scaled_first_yv12 = xd->plane[0].pre[0];
......@@ -3968,11 +3968,11 @@ int64_t vp9_rd_pick_inter_mode_sub8x8(VP9_COMP *cpi, MACROBLOCK *x,
// TODO(jingning, jkoleszar): scaling reference frame not supported for
// sub8x8 blocks.
if (ref_frame > 0 &&
vp9_is_scaled(&scale_factor[ref_frame]))
vp9_is_scaled(scale_factor[ref_frame].sfc))
continue;
if (second_ref_frame > 0 &&
vp9_is_scaled(&scale_factor[second_ref_frame]))
vp9_is_scaled(scale_factor[second_ref_frame].sfc))
continue;
set_scale_factors(xd, ref_frame, second_ref_frame, scale_factor);
......
......@@ -38,14 +38,15 @@ static void temporal_filter_predictors_mb_c(MACROBLOCKD *xd,
int stride,
int mv_row,
int mv_col,
uint8_t *pred) {
uint8_t *pred,
struct scale_factors *scale) {
const int which_mv = 0;
MV mv = { mv_row, mv_col };
vp9_build_inter_predictor(y_mb_ptr, stride,
&pred[0], 16,
&mv,
&xd->scale_factor[which_mv],
scale,
16, 16,
which_mv,
&xd->subpix, MV_PRECISION_Q3);
......@@ -55,7 +56,7 @@ static void temporal_filter_predictors_mb_c(MACROBLOCKD *xd,
vp9_build_inter_predictor(u_mb_ptr, stride,
&pred[256], 8,
&mv,
&xd->scale_factor[which_mv],
scale,
8, 8,
which_mv,
&xd->subpix, MV_PRECISION_Q4);
......@@ -63,7 +64,7 @@ static void temporal_filter_predictors_mb_c(MACROBLOCKD *xd,
vp9_build_inter_predictor(v_mb_ptr, stride,
&pred[320], 8,
&mv,
&xd->scale_factor[which_mv],
scale,
8, 8,
which_mv,
&xd->subpix, MV_PRECISION_Q4);
......@@ -186,7 +187,8 @@ static int temporal_filter_find_matching_mb_c(VP9_COMP *cpi,
static void temporal_filter_iterate_c(VP9_COMP *cpi,
int frame_count,
int alt_ref_index,
int strength) {
int strength,
struct scale_factors *scale) {
int byte;
int frame;
int mb_col, mb_row;
......@@ -280,7 +282,7 @@ static void temporal_filter_iterate_c(VP9_COMP *cpi,
cpi->frames[frame]->y_stride,
mbd->mi_8x8[0]->bmi[0].as_mv[0].as_mv.row,
mbd->mi_8x8[0]->bmi[0].as_mv[0].as_mv.col,
predictor);
predictor, scale);
// Apply the filter (YUV)
vp9_temporal_filter_apply(f->y_buffer + mb_y_offset, f->y_stride,
......@@ -374,6 +376,9 @@ void vp9_temporal_filter_prepare(VP9_COMP *cpi, int distance) {
const int num_frames_forward = vp9_lookahead_depth(cpi->lookahead)
- (num_frames_backward + 1);
struct scale_factors scale;
struct scale_factors_common scale_comm;
switch (blur_type) {
case 1:
// Backward Blur
......@@ -432,7 +437,7 @@ void vp9_temporal_filter_prepare(VP9_COMP *cpi, int distance) {
#endif
// Setup scaling factors. Scaling on each of the arnr frames is not supported
vp9_setup_scale_factors_for_frame(&cpi->mb.e_mbd.scale_factor[0],
vp9_setup_scale_factors_for_frame(&scale, &scale_comm,
cm->yv12_fb[cm->new_fb_idx].y_crop_width,
cm->yv12_fb[cm->new_fb_idx].y_crop_height,
cm->width, cm->height);
......@@ -447,7 +452,7 @@ void vp9_temporal_filter_prepare(VP9_COMP *cpi, int distance) {
}
temporal_filter_iterate_c(cpi, frames_to_blur, frames_to_blur_backward,
strength);
strength, &scale);
}
void configure_arnr_filter(VP9_COMP *cpi, const unsigned int this_frame,
......
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