vp8_impl.cc: Apply boost on golden frames.

webrtc/modules/video_coding/codecs/vp8/vp8_impl.cc

Index: webrtc/modules/video_coding/codecs/vp8/vp8_impl.cc
diff --git a/webrtc/modules/video_coding/codecs/vp8/vp8_impl.cc b/webrtc/modules/video_coding/codecs/vp8/vp8_impl.cc
index bef4e6397358850ba3fae5190e85792164a3ff6b..73e2fac9ab825570d579f91af909485ce28cc0f1 100644
--- a/webrtc/modules/video_coding/codecs/vp8/vp8_impl.cc
+++ b/webrtc/modules/video_coding/codecs/vp8/vp8_impl.cc
@@ -126,6 +126,7 @@ VP8EncoderImpl::VP8EncoderImpl()
       token_partitions_(VP8_ONE_TOKENPARTITION),
       down_scale_requested_(false),
       down_scale_bitrate_(0),
+      use_gf_boost_(webrtc::field_trial::IsEnabled("WebRTC-VP8-GfBoost")),
       key_frame_request_(kMaxSimulcastStreams, false) {
   uint32_t seed = rtc::Time32();
   srand(seed);
@@ -634,6 +635,12 @@ int VP8EncoderImpl::InitAndSetControlSettings() {
     // rate control (drop frames on large target bitrate overshoot)
     vpx_codec_control(&(encoders_[i]), VP8E_SET_SCREEN_CONTENT_MODE,
                       codec_.mode == kScreensharing ? 2 : 0);
+    // Apply boost on golden frames (has only effect when resilience is off).
+    if (use_gf_boost_ && codec_.VP8()->resilience == kResilienceOff) {
+      const int kGfBoostPercent = 50;

[brandtr, 2017/03/10 08:21:31]

Maybe we should send in this value as part of the field trial string?

[åsapersson, 2017/03/10 11:01:40]

Sounds good. Done.

+      vpx_codec_control(&(encoders_[i]), VP8E_SET_GF_CBR_BOOST_PCT,
+                        kGfBoostPercent);
+    }
   }
   inited_ = true;
   return WEBRTC_VIDEO_CODEC_OK;