3 files changed, 20 insertions, 6 deletions
diff --git a/indra/llwebrtc/llwebrtc.cpp b/indra/llwebrtc/llwebrtc.cpp
index 14fb63ec2a..d5bd913315 100644
--- a/indra/llwebrtc/llwebrtc.cpp
+++ b/indra/llwebrtc/llwebrtc.cpp
@@ -35,6 +35,7 @@
 #include "api/media_stream_interface.h"
 #include "api/media_stream_track.h"
 #include "modules/audio_processing/audio_buffer.h"
+#include "modules/audio_mixer/audio_mixer_impl.h"
 
 namespace llwebrtc
 {
@@ -88,7 +89,7 @@ void LLAudioDeviceObserver::OnRenderData(const void    *audio_samples,
 {
 }
 
-LLCustomProcessor::LLCustomProcessor() : mSampleRateHz(0), mNumChannels(0), mMicrophoneEnergy(0.0)
+LLCustomProcessor::LLCustomProcessor() : mSampleRateHz(0), mNumChannels(0), mMicrophoneEnergy(0.0), mGain(1.0)
 {
     memset(mSumVector, 0, sizeof(mSumVector));
 }
@@ -128,9 +129,13 @@ void LLCustomProcessor::Process(webrtc::AudioBuffer *audio_in)
     for (size_t index = 0; index < stream_config.num_samples(); index++)
     {
         float sample = frame_samples[index];
+        sample       = sample * mGain; // apply gain
+        frame_samples[index] = sample; // write processed sample back to buffer.
         energy += sample * sample;
     }
 
+    audio_in->CopyFrom(&frame[0], stream_config);
+
     // smooth it.
     size_t buffer_size = sizeof(mSumVector) / sizeof(mSumVector[0]);
     float  totalSum    = 0;
@@ -236,9 +241,9 @@ void LLWebRTCImpl::init()
     webrtc::AudioProcessing::Config apm_config;
     apm_config.echo_canceller.enabled         = false;
     apm_config.echo_canceller.mobile_mode     = false;
-    apm_config.gain_controller1.enabled       = true;
+    apm_config.gain_controller1.enabled       = false;
     apm_config.gain_controller1.mode          = webrtc::AudioProcessing::Config::GainController1::kAdaptiveAnalog;
-    apm_config.gain_controller2.enabled       = true;
+    apm_config.gain_controller2.enabled       = false;
     apm_config.high_pass_filter.enabled       = true;
     apm_config.noise_suppression.enabled      = true;
     apm_config.noise_suppression.level        = webrtc::AudioProcessing::Config::NoiseSuppression::kVeryHigh;
@@ -260,6 +265,7 @@ void LLWebRTCImpl::init()
     mAudioProcessingModule->ApplyConfig(apm_config);
     mAudioProcessingModule->Initialize(processing_config);
 
+
     mPeerConnectionFactory = webrtc::CreatePeerConnectionFactory(mNetworkThread.get(),
                                                                  mWorkerThread.get(),
                                                                  mSignalingThread.get(),
@@ -336,9 +342,9 @@ void LLWebRTCImpl::setAudioConfig(LLWebRTCDeviceInterface::AudioConfig config)
     webrtc::AudioProcessing::Config apm_config;
     apm_config.echo_canceller.enabled         = config.mEchoCancellation;
     apm_config.echo_canceller.mobile_mode     = false;
-    apm_config.gain_controller1.enabled       = true;
+    apm_config.gain_controller1.enabled       = config.mAGC;
     apm_config.gain_controller1.mode          = webrtc::AudioProcessing::Config::GainController1::kAdaptiveAnalog;
-    apm_config.gain_controller2.enabled       = true;
+    apm_config.gain_controller2.enabled       = false;
     apm_config.high_pass_filter.enabled       = true;
     apm_config.transient_suppression.enabled  = true;
     apm_config.pipeline.multi_channel_render  = true;
@@ -612,6 +618,8 @@ float LLWebRTCImpl::getTuningAudioLevel() { return -20 * log10f(mTuningAudioDevi
 
 float LLWebRTCImpl::getPeerConnectionAudioLevel() { return -20 * log10f(mPeerCustomProcessor->getMicrophoneEnergy()); }
 
+void LLWebRTCImpl::setPeerConnectionGain(float gain) { mPeerCustomProcessor->setGain(gain); }
+
 
 //
 // Peer Connection Helpers
@@ -937,7 +945,7 @@ void LLWebRTCPeerConnectionImpl::setSendVolume(float volume)
             {
                 for (auto &track : mLocalStream->GetAudioTracks())
                 {
-                    track->GetSource()->SetVolume(volume);
+                    track->GetSource()->SetVolume(volume*5.0);
                 }
             }
         });
diff --git a/indra/llwebrtc/llwebrtc.h b/indra/llwebrtc/llwebrtc.h
index ecbab81538..f447ea990a 100644
--- a/indra/llwebrtc/llwebrtc.h
+++ b/indra/llwebrtc/llwebrtc.h
@@ -145,6 +145,7 @@ class LLWebRTCDeviceInterface
     virtual void setTuningMode(bool enable) = 0;
     virtual float getTuningAudioLevel() = 0; // for use during tuning
     virtual float getPeerConnectionAudioLevel() = 0; // for use when not tuning
+    virtual void setPeerConnectionGain(float gain) = 0;
 };
 
 // LLWebRTCAudioInterface provides the viewer with a way
diff --git a/indra/llwebrtc/llwebrtc_impl.h b/indra/llwebrtc/llwebrtc_impl.h
index 448d36e3ea..6672f8ce90 100644
--- a/indra/llwebrtc/llwebrtc_impl.h
+++ b/indra/llwebrtc/llwebrtc_impl.h
@@ -121,6 +121,8 @@ class LLCustomProcessor : public webrtc::CustomProcessing
 
     float getMicrophoneEnergy() { return mMicrophoneEnergy; }
 
+    void setGain(float gain) { mGain = gain; }
+
   protected:
     static const int NUM_PACKETS_TO_FILTER = 30;  // 300 ms of smoothing
     int              mSampleRateHz;
@@ -128,6 +130,7 @@ class LLCustomProcessor : public webrtc::CustomProcessing
 
     float mSumVector[NUM_PACKETS_TO_FILTER];
     float mMicrophoneEnergy;
+    float mGain;
 };
 
 
@@ -160,6 +163,8 @@ class LLWebRTCImpl : public LLWebRTCDeviceInterface, public webrtc::AudioDeviceS
     float getTuningAudioLevel() override;
     float getPeerConnectionAudioLevel() override;
 
+    void setPeerConnectionGain(float gain) override;
+
     //
     // AudioDeviceSink
     //