shithub: libvpx

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Allow encoder to set lpf level to 0

As a way to speed-up rtc encoding at speed 7.

Change-Id: Ie36a010392cf7b741dc130df21a4e733622a75b7

--- a/vp9/encoder/vp9_picklpf.c

+++ b/vp9/encoder/vp9_picklpf.c

@@ -144,7 +144,9 @@

   lf->sharpness_level = cm->frame_type == KEY_FRAME ? 0

                                                     : cpi->oxcf.sharpness;

-  if (method == LPF_PICK_FROM_Q) {

+  if (method == LPF_PICK_MINIMAL_LPF && lf->filter_level) {

+      lf->filter_level = 0;

+  } else if (method >= LPF_PICK_FROM_Q) {

     const int min_filter_level = 0;

     const int max_filter_level = get_max_filter_level(cpi);

     const int q = vp9_ac_quant(cm->base_qindex, 0);

--- a/vp9/encoder/vp9_speed_features.c

+++ b/vp9/encoder/vp9_speed_features.c

@@ -280,7 +280,7 @@

     sf->reuse_inter_pred_sby = 1;

   }

   if (speed >= 7) {

-    sf->disable_filter_search_var_thresh = 1000;

+    sf->lpf_pick = LPF_PICK_MINIMAL_LPF;

   }

   if (speed >= 8) {

     int i;

--- a/vp9/encoder/vp9_speed_features.h

+++ b/vp9/encoder/vp9_speed_features.h

@@ -73,6 +73,8 @@

   LPF_PICK_FROM_SUBIMAGE,

   // Estimate the level based on quantizer and frame type

   LPF_PICK_FROM_Q,

+  // Pick 0 to disable LPF if LPF was enabled last frame

+  LPF_PICK_MINIMAL_LPF

 } LPF_PICK_METHOD;

 typedef enum {