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Tiny vp9_picklpf.c cleanup.

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Change-Id: I1804c3629c3df2b67438e87196ab35fafaddaa24
This commit is contained in:
Dmitry Kovalev 2014-03-21 12:00:26 -07:00
parent d070aa5de0
commit 50bbd8a583
1 changed files with 16 additions and 16 deletions
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32
vp9/encoder/vp9_picklpf.c
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@ -10,16 +10,18 @@
#include <assert.h>
#include <limits.h>
#include "./vpx_scale_rtcd.h"
#include "vpx_mem/vpx_mem.h"
#include "vp9/common/vp9_loopfilter.h"
#include "vp9/common/vp9_onyxc_int.h"
#include "vp9/common/vp9_quant_common.h"
#include "vp9/encoder/vp9_onyx_int.h"
#include "vp9/encoder/vp9_picklpf.h"
#include "vp9/encoder/vp9_quantize.h"
#include "vp9/common/vp9_quant_common.h"
#include "vpx_mem/vpx_mem.h"
#include "vpx_scale/vpx_scale.h"
#include "vp9/common/vp9_alloccommon.h"
#include "vp9/common/vp9_loopfilter.h"
#include "./vpx_scale_rtcd.h"
static int get_max_filter_level(VP9_COMP *cpi) {
return cpi->twopass.section_intra_rating > 8 ? MAX_LOOP_FILTER * 3 / 4
@ -28,11 +30,11 @@ static int get_max_filter_level(VP9_COMP *cpi) {
static int try_filter_frame(const YV12_BUFFER_CONFIG *sd, VP9_COMP *const cpi,
MACROBLOCKD *const xd, VP9_COMMON *const cm,
int filt_level, int partial_frame) {
VP9_COMMON *const cm = &cpi->common;
int filt_err;
vp9_loop_filter_frame(cm, xd, filt_level, 1, partial_frame);
vp9_loop_filter_frame(cm, &cpi->mb.e_mbd, filt_level, 1, partial_frame);
filt_err = vp9_calc_ss_err(sd, cm->frame_to_show);
// Re-instate the unfiltered frame
@ -43,7 +45,6 @@ static int try_filter_frame(const YV12_BUFFER_CONFIG *sd, VP9_COMP *const cpi,
static void search_filter_level(const YV12_BUFFER_CONFIG *sd, VP9_COMP *cpi,
int partial_frame) {
MACROBLOCKD *const xd = &cpi->mb.e_mbd;
VP9_COMMON *const cm = &cpi->common;
struct loopfilter *const lf = &cm->lf;
const int min_filter_level = 0;
@ -64,7 +65,7 @@ static void search_filter_level(const YV12_BUFFER_CONFIG *sd, VP9_COMP *cpi,
// Make a copy of the unfiltered / processed recon buffer
vpx_yv12_copy_y(cm->frame_to_show, &cpi->last_frame_uf);
best_err = try_filter_frame(sd, cpi, xd, cm, filt_mid, partial_frame);
best_err = try_filter_frame(sd, cpi, filt_mid, partial_frame);
filt_best = filt_mid;
ss_err[filt_mid] = best_err;
@ -86,7 +87,7 @@ static void search_filter_level(const YV12_BUFFER_CONFIG *sd, VP9_COMP *cpi,
if (filt_direction <= 0 && filt_low != filt_mid) {
// Get Low filter error score
if (ss_err[filt_low] < 0) {
filt_err = try_filter_frame(sd, cpi, xd, cm, filt_low, partial_frame);
filt_err = try_filter_frame(sd, cpi, filt_low, partial_frame);
ss_err[filt_low] = filt_err;
} else {
filt_err = ss_err[filt_low];
@ -105,7 +106,7 @@ static void search_filter_level(const YV12_BUFFER_CONFIG *sd, VP9_COMP *cpi,
// Now look at filt_high
if (filt_direction >= 0 && filt_high != filt_mid) {
if (ss_err[filt_high] < 0) {
filt_err = try_filter_frame(sd, cpi, xd, cm, filt_high, partial_frame);
filt_err = try_filter_frame(sd, cpi, filt_high, partial_frame);
ss_err[filt_high] = filt_err;
} else {
filt_err = ss_err[filt_high];
@ -119,7 +120,7 @@ static void search_filter_level(const YV12_BUFFER_CONFIG *sd, VP9_COMP *cpi,
// Half the step distance if the best filter value was the same as last time
if (filt_best == filt_mid) {
filter_step = filter_step / 2;
filter_step /= 2;
filt_direction = 0;
} else {
filt_direction = (filt_best < filt_mid) ? -1 : 1;
@ -143,9 +144,8 @@ void vp9_pick_filter_level(const YV12_BUFFER_CONFIG *sd, VP9_COMP *cpi,
const int max_filter_level = get_max_filter_level(cpi);
const int q = vp9_ac_quant(cm->base_qindex, 0);
// These values were determined by linear fitting the result of the
// searched level
// filt_guess = q * 0.316206 + 3.87252
int filt_guess = (q * 20723 + 1015158 + (1 << 17)) >> 18;
// searched level, filt_guess = q * 0.316206 + 3.87252
int filt_guess = ROUND_POWER_OF_TWO(q * 20723 + 1015158, 18);
if (cm->frame_type == KEY_FRAME)
filt_guess -= 4;
lf->filter_level = clamp(filt_guess, min_filter_level, max_filter_level);