Added offline data logpoints and logging functionality to the gain controller

webrtc/modules/audio_processing/gain_control_for_experimental_agc.cc

Index: webrtc/modules/audio_processing/gain_control_for_experimental_agc.cc
diff --git a/webrtc/modules/audio_processing/gain_control_for_experimental_agc.cc b/webrtc/modules/audio_processing/gain_control_for_experimental_agc.cc
index 2ef88c03aab3f597f2121d8fd1160d17074e440a..f8063865b63018439669d0f88850061a4fe4c5fe 100644
--- a/webrtc/modules/audio_processing/gain_control_for_experimental_agc.cc
+++ b/webrtc/modules/audio_processing/gain_control_for_experimental_agc.cc
@@ -13,15 +13,23 @@
 #include "webrtc/base/checks.h"
 #include "webrtc/base/criticalsection.h"
 #include "webrtc/modules/audio_processing/include/audio_processing.h"
+#include "webrtc/modules/audio_processing/logging/apm_data_dumper.h"
 
 namespace webrtc {
 
+int GainControlForExperimentalAgc::instance_counter_ = 0;
+
 GainControlForExperimentalAgc::GainControlForExperimentalAgc(
     GainControl* gain_control,
     rtc::CriticalSection* crit_capture)
-    : real_gain_control_(gain_control),
+    : data_dumper_(new ApmDataDumper(instance_counter_)),
+      real_gain_control_(gain_control),
       volume_(0),
-      crit_capture_(crit_capture) {}
+      crit_capture_(crit_capture) {
+  instance_counter_++;
+}
+
+GainControlForExperimentalAgc::~GainControlForExperimentalAgc() = default;
 
 int GainControlForExperimentalAgc::Enable(bool enable) {
   return real_gain_control_->Enable(enable);
@@ -33,12 +41,16 @@ bool GainControlForExperimentalAgc::is_enabled() const {
 
 int GainControlForExperimentalAgc::set_stream_analog_level(int level) {
   rtc::CritScope cs_capture(crit_capture_);
+  data_dumper_->DumpRaw("experimental_gain_control_set_stream_analog_level", 1,
+                        &level);
   volume_ = level;
   return AudioProcessing::kNoError;
 }
 
 int GainControlForExperimentalAgc::stream_analog_level() {
   rtc::CritScope cs_capture(crit_capture_);
+  data_dumper_->DumpRaw("experimental_gain_control_stream_analog_level", 1,
+                        &volume_);
   return volume_;
 }
 
@@ -101,4 +113,8 @@ int GainControlForExperimentalAgc::GetMicVolume() {
   return volume_;
 }
 
+void GainControlForExperimentalAgc::Initialize() {
+  data_dumper_->InitiateNewSetOfRecordings();
+}
+
 }  // namespace webrtc