shithub: libvpx

Download patch

ref: dc42f343ae4365d68a096498ecdd8a960414905a
parent: bf7a02a4cf0ed7f34c92fc3f974d94487cf44c02
author: paulwilkins <[email protected]>
date: Fri Aug 26 07:43:47 EDT 2016 

Add ALLOW_RECODE_FIRST speed mode.

This patch is to address concerns that changes to allow
recodes on the first frame in each ARF group do not give a
good enough speed quality trade off for speed 2. Though the
average impact  on encode speed is 1-2%, for some hard clips
it is > 5% rise.  For speed 1 this is less an issue and for Speed 0
the previous patch actually  improves speed.

Change-Id: Ie1bcefdbfdf846d3f4428590173f621465dffe3a


--- a/vp9/encoder/vp9_encoder.c
+++ b/vp9/encoder/vp9_encoder.c
@@ -2418,8 +2418,9 @@
   if ((rc->projected_frame_size >= rc->max_frame_bandwidth) ||
       big_rate_miss(cpi, high_limit, low_limit) ||
       (cpi->sf.recode_loop == ALLOW_RECODE) ||
-      ((frame_is_kfgfarf || two_pass_first_group_inter(cpi)) &&
-       (cpi->sf.recode_loop == ALLOW_RECODE_KFARFGF))) {
+      (two_pass_first_group_inter(cpi) &&
+       (cpi->sf.recode_loop == ALLOW_RECODE_FIRST)) ||
+      (frame_is_kfgfarf && (cpi->sf.recode_loop >= ALLOW_RECODE_KFARFGF))) {
     if (frame_is_kfgfarf && (oxcf->resize_mode == RESIZE_DYNAMIC) &&
         scale_down(cpi, q)) {
       // Code this group at a lower resolution.
--- a/vp9/encoder/vp9_speed_features.c
+++ b/vp9/encoder/vp9_speed_features.c
@@ -169,7 +169,6 @@
     sf->mode_skip_start = 10;
     sf->adaptive_pred_interp_filter = 1;
 
-    sf->recode_loop = ALLOW_RECODE_KFARFGF;
     sf->intra_y_mode_mask[TX_32X32] = INTRA_DC_H_V;
     sf->intra_uv_mode_mask[TX_32X32] = INTRA_DC_H_V;
     sf->intra_y_mode_mask[TX_16X16] = INTRA_DC_H_V;
@@ -179,6 +178,7 @@
   }
 
   if (speed >= 2) {
+    sf->recode_loop = ALLOW_RECODE_KFARFGF;
     sf->tx_size_search_method =
         frame_is_boosted(cpi) ? USE_FULL_RD : USE_LARGESTALL;
 
@@ -528,7 +528,7 @@
   // best quality defaults
   sf->frame_parameter_update = 1;
   sf->mv.search_method = NSTEP;
-  sf->recode_loop = ALLOW_RECODE_KFARFGF;
+  sf->recode_loop = ALLOW_RECODE_FIRST;
   sf->mv.subpel_search_method = SUBPEL_TREE;
   sf->mv.subpel_iters_per_step = 2;
   sf->mv.subpel_force_stop = 0;
--- a/vp9/encoder/vp9_speed_features.h
+++ b/vp9/encoder/vp9_speed_features.h
@@ -67,8 +67,10 @@
   ALLOW_RECODE_KFMAXBW = 1,
   // Allow recode only for KF/ARF/GF frames.
   ALLOW_RECODE_KFARFGF = 2,
+  // Allow recode for ARF/GF/KF and first normal frame in each group.
+  ALLOW_RECODE_FIRST = 3,
   // Allow recode for all frames based on bitrate constraints.
-  ALLOW_RECODE = 3,
+  ALLOW_RECODE = 4,
 } RECODE_LOOP_TYPE;
 
 typedef enum {