AGC2 as a new APM sub-module operating with hard-coded gain.

webrtc/modules/audio_processing/audio_processing_impl.cc

Index: webrtc/modules/audio_processing/audio_processing_impl.cc
diff --git a/webrtc/modules/audio_processing/audio_processing_impl.cc b/webrtc/modules/audio_processing/audio_processing_impl.cc
index 816210f34f8738eb7a042adee69f87f5ed1a99d8..eb5f1a2760bbd98fde450d8da559c342a913fcd7 100644
--- a/webrtc/modules/audio_processing/audio_processing_impl.cc
+++ b/webrtc/modules/audio_processing/audio_processing_impl.cc
@@ -23,6 +23,7 @@
 #include "webrtc/common_audio/signal_processing/include/signal_processing_library.h"
 #include "webrtc/modules/audio_processing/aec/aec_core.h"
 #include "webrtc/modules/audio_processing/aec3/echo_canceller3.h"
+#include "webrtc/modules/audio_processing/agc2/agc2_impl.h"
 #include "webrtc/modules/audio_processing/agc/agc_manager_direct.h"
 #include "webrtc/modules/audio_processing/audio_buffer.h"
 #include "webrtc/modules/audio_processing/beamformer/nonlinear_beamformer.h"
@@ -168,6 +169,7 @@ bool AudioProcessingImpl::ApmSubmoduleStates::Update(
     bool intelligibility_enhancer_enabled,
     bool beamformer_enabled,
     bool adaptive_gain_controller_enabled,
+    bool adaptive_gain_controller2_enabled,
     bool level_controller_enabled,
     bool echo_canceller3_enabled,
     bool voice_activity_detector_enabled,
@@ -186,6 +188,8 @@ bool AudioProcessingImpl::ApmSubmoduleStates::Update(
   changed |= (beamformer_enabled != beamformer_enabled_);
   changed |=
       (adaptive_gain_controller_enabled != adaptive_gain_controller_enabled_);
+  changed |=
+      (adaptive_gain_controller2_enabled != adaptive_gain_controller2_enabled_);
   changed |= (level_controller_enabled != level_controller_enabled_);
   changed |= (echo_canceller3_enabled != echo_canceller3_enabled_);
   changed |= (level_estimator_enabled != level_estimator_enabled_);
@@ -201,6 +205,7 @@ bool AudioProcessingImpl::ApmSubmoduleStates::Update(
     intelligibility_enhancer_enabled_ = intelligibility_enhancer_enabled;
     beamformer_enabled_ = beamformer_enabled;
     adaptive_gain_controller_enabled_ = adaptive_gain_controller_enabled;
+    adaptive_gain_controller2_enabled_ = adaptive_gain_controller2_enabled;
     level_controller_enabled_ = level_controller_enabled;
     echo_canceller3_enabled_ = echo_canceller3_enabled;
     level_estimator_enabled_ = level_estimator_enabled;
@@ -274,6 +279,7 @@ struct AudioProcessingImpl::ApmPrivateSubmodules {
   // Accessed internally from capture or during initialization
   std::unique_ptr<NonlinearBeamformer> beamformer;
   std::unique_ptr<AgcManagerDirect> agc_manager;
+  std::unique_ptr<Agc2Impl> agc2;
   std::unique_ptr<LowCutFilter> low_cut_filter;
   std::unique_ptr<LevelController> level_controller;
   std::unique_ptr<ResidualEchoDetector> residual_echo_detector;
@@ -345,6 +351,8 @@ AudioProcessingImpl::AudioProcessingImpl(const webrtc::Config& config,
             public_submodules_->gain_control.get(), &crit_capture_));
     private_submodules_->residual_echo_detector.reset(
         new ResidualEchoDetector());
+    private_submodules_->agc2.reset(
+        new Agc2Impl(&crit_capture_));
 
     // TODO(peah): Move this creation to happen only when the level controller
     // is enabled.
@@ -517,6 +525,7 @@ int AudioProcessingImpl::InitializeLocked() {
   InitializeLevelController();
   InitializeResidualEchoDetector();
   InitializeEchoCanceller3();
+  InitializeAgc2();
 
 #ifdef WEBRTC_AUDIOPROC_DEBUG_DUMP
   if (debug_dump_.debug_file->is_open()) {
@@ -665,6 +674,16 @@ void AudioProcessingImpl::ApplyConfig(const AudioProcessing::Config& config) {
     LOG(LS_INFO) << "Echo canceller 3 activated: "
                  << capture_nonlocked_.echo_canceller3_enabled;
   }
+
+  config_ok = Agc2Impl::Validate(config_.agc2);
+  if (!config_ok) {
+    LOG(LS_ERROR) << "AudioProcessing module config error" << std::endl
+                  << "agc2: "
+                  << Agc2Impl::ToString(config_.agc2)
+                  << std::endl
+                  << "Reverting to default parameter set";
+    config_.agc2 = AudioProcessing::Config::Agc2();
+  }
 }
 
 void AudioProcessingImpl::SetExtraOptions(const webrtc::Config& config) {
@@ -1697,6 +1716,7 @@ bool AudioProcessingImpl::UpdateActiveSubmoduleStates() {
       capture_nonlocked_.intelligibility_enabled,
       capture_nonlocked_.beamformer_enabled,
       public_submodules_->gain_control->is_enabled(),
+      capture_nonlocked_.adaptive_gain_controller2_enabled,
       capture_nonlocked_.level_controller_enabled,
       capture_nonlocked_.echo_canceller3_enabled,
       public_submodules_->voice_detection->is_enabled(),
@@ -1747,6 +1767,7 @@ void AudioProcessingImpl::InitializeLowCutFilter() {
     private_submodules_->low_cut_filter.reset();
   }
 }
+
 void AudioProcessingImpl::InitializeEchoCanceller3() {
   if (capture_nonlocked_.echo_canceller3_enabled) {
     private_submodules_->echo_canceller3.reset(
@@ -1756,6 +1777,15 @@ void AudioProcessingImpl::InitializeEchoCanceller3() {
   }
 }
 
+void AudioProcessingImpl::InitializeAgc2() {
+  if (capture_nonlocked_.adaptive_gain_controller2_enabled) {
+    private_submodules_->agc2.reset(
+        new Agc2Impl(&crit_capture_));
+  } else {
+    private_submodules_->agc2.reset();
+  }
+}
+
 void AudioProcessingImpl::InitializeLevelController() {
   private_submodules_->level_controller->Initialize(proc_sample_rate_hz());
 }