commit 529131d3e4b476219f79af10ed4b6aaa00b0a0df
author Hanna Silen <silen@webrtc.org> Fri Oct 29 14:55:45 2021 +0200
committer WebRTC LUCI CQ <webrtc-scoped@luci-project-accounts.iam.gserviceaccount.com> Wed Nov 03 06:32:33 2021 +0000
tree ec7777cd21a14e9f77d25bfa10f37e430ae4024a
parent 3041eb21e9c26277d6d80b7d6b0217f956b80dcb

Add AnalogGainStatsReporter to compute and report analog gain statistics

Implement AnalogGainStatsReporter and add it in AudioProcessingImpl.
This class computes statistics for analog gain updates and
periodically reports them into a histogram.

The added histograms for analog gain update statistics:

 - WebRTC.Audio.ApmAnalogGainDecreaseRate
 - WebRTC.Audio.ApmAnalogGainIncreaseRate
 - WebRTC.Audio.ApmAnalogGainUpdateRate
 - WebRTC.Audio.ApmAnalogGainDecreaseAverage
 - WebRTC.Audio.ApmAnalogGainIncreaseAverage
 - WebRTC.Audio.ApmAnalogGainUpdateAverage

The histograms are defined in
https://chromium-review.googlesource.com/c/chromium/src/+/3207987

Bug: webrtc:12774
Change-Id: I3c58d4bb3eb034a11c3f39ab8edb2bc67c5fd5e4
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/234140
Commit-Queue: Hanna Silen <silen@webrtc.org>
Reviewed-by: Per Åhgren <peah@webrtc.org>
Reviewed-by: Alessio Bazzica <alessiob@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35301}

modules/audio_processing/audio_processing_impl.cc

diff --git a/modules/audio_processing/audio_processing_impl.cc b/modules/audio_processing/audio_processing_impl.cc
index 2b02a23..169ffe4 100644
--- a/modules/audio_processing/audio_processing_impl.cc
+++ b/modules/audio_processing/audio_processing_impl.cc
@@ -1149,6 +1149,7 @@
       capture_.prev_analog_mic_level != analog_mic_level &&
       capture_.prev_analog_mic_level != -1;
   capture_.prev_analog_mic_level = analog_mic_level;
+  analog_gain_stats_reporter_.UpdateStatistics(analog_mic_level);
 
   if (submodules_.echo_controller) {
     capture_.echo_path_gain_change = analog_mic_level_changed;