ref: f6bc783d630cd191567259279be1b578a4825244
parent: 2873d5608be29ad86837e4859c441626548575fb
parent: 939791a129819951bbdd187ba022d456efbc21d6
author: Yunqing Wang <yunqingwang@google.com>
date: Tue Sep 10 06:04:30 EDT 2013
Merge "Modify encode breakout for static frames"
--- a/vp9/encoder/vp9_firstpass.c
+++ b/vp9/encoder/vp9_firstpass.c
@@ -1717,6 +1717,8 @@
old_boost_score = boost_score;
}
+ cpi->gf_zeromotion_pct = (int)(zero_motion_accumulator * 1000.0);
+
// Don't allow a gf too near the next kf
if ((cpi->twopass.frames_to_key - i) < MIN_GF_INTERVAL) { while (i < cpi->twopass.frames_to_key) {@@ -2162,6 +2164,8 @@
// Define next gf group and assign bits to it
this_frame_copy = this_frame;
+ cpi->gf_zeromotion_pct = 0;
+
#if CONFIG_MULTIPLE_ARF
if (cpi->multi_arf_enabled) {define_fixed_arf_period(cpi);
@@ -2171,6 +2175,15 @@
#if CONFIG_MULTIPLE_ARF
}
#endif
+
+ if (cpi->gf_zeromotion_pct > 995) {+ // As long as max_thresh for encode breakout is small enough, it is ok
+ // to enable it for no-show frame, i.e. set enable_encode_breakout to 2.
+ if (!cpi->common.show_frame)
+ cpi->enable_encode_breakout = 0;
+ else
+ cpi->enable_encode_breakout = 2;
+ }
// If we are going to code an altref frame at the end of the group
// and the current frame is not a key frame....
--- a/vp9/encoder/vp9_onyx_if.c
+++ b/vp9/encoder/vp9_onyx_if.c
@@ -1590,6 +1590,8 @@
cpi->output_pkt_list = oxcf->output_pkt_list;
+ cpi->enable_encode_breakout = 1;
+
if (cpi->pass == 1) {vp9_init_first_pass(cpi);
} else if (cpi->pass == 2) {@@ -3618,6 +3620,8 @@
static void Pass2Encode(VP9_COMP *cpi, unsigned long *size,
unsigned char *dest, unsigned int *frame_flags) {+
+ cpi->enable_encode_breakout = 1;
if (!cpi->refresh_alt_ref_frame)
vp9_second_pass(cpi);
--- a/vp9/encoder/vp9_onyx_int.h
+++ b/vp9/encoder/vp9_onyx_int.h
@@ -495,6 +495,7 @@
int last_boost;
int kf_boost;
int kf_zeromotion_pct;
+ int gf_zeromotion_pct;
int64_t target_bandwidth;
struct vpx_codec_pkt_list *output_pkt_list;
@@ -656,6 +657,8 @@
int initial_height;
int number_spatial_layers;
+ int enable_encode_breakout; // Default value is 1. From first pass stats,
+ // encode_breakout may be disabled.
#if CONFIG_MULTIPLE_ARF
// ARF tracking variables.
--- a/vp9/encoder/vp9_rdopt.c
+++ b/vp9/encoder/vp9_rdopt.c
@@ -2861,7 +2861,7 @@
if (cpi->common.mcomp_filter_type == SWITCHABLE)
*rate2 += get_switchable_rate(x);
- if (!is_comp_pred) {+ if (!is_comp_pred && cpi->enable_encode_breakout) {if (cpi->active_map_enabled && x->active_ptr[0] == 0)
x->skip = 1;
else if (x->encode_breakout) {@@ -2872,17 +2872,22 @@
unsigned int thresh_ac;
// The encode_breakout input
unsigned int encode_breakout = x->encode_breakout << 4;
+ int max_thresh = 36000;
+ // Use extreme low threshold for static frames to limit skipping.
+ if (cpi->enable_encode_breakout == 2)
+ max_thresh = 128;
+
// Calculate threshold according to dequant value.
thresh_ac = (xd->plane[0].dequant[1] * xd->plane[0].dequant[1]) / 9;
- // Set a maximum for threshold to avoid big PSNR loss in low bitrate case.
- if (thresh_ac > 36000)
- thresh_ac = 36000;
-
// Use encode_breakout input if it is bigger than internal threshold.
if (thresh_ac < encode_breakout)
thresh_ac = encode_breakout;
+
+ // Set a maximum for threshold to avoid big PSNR loss in low bitrate case.
+ if (thresh_ac > max_thresh)
+ thresh_ac = max_thresh;
var = cpi->fn_ptr[y_size].vf(x->plane[0].src.buf, x->plane[0].src.stride,
xd->plane[0].dst.buf,
--
⑨