3 files changed, 24 insertions, 0 deletions
diff --git a/indra/llwebrtc/llwebrtc.cpp b/indra/llwebrtc/llwebrtc.cpp
index c2631b2ea3..93e9db9c1d 100644
--- a/indra/llwebrtc/llwebrtc.cpp
+++ b/indra/llwebrtc/llwebrtc.cpp
@@ -341,6 +341,28 @@ void LLWebRTCImpl::setMute(bool mute)
         });
 }
 
+void LLWebRTCImpl::setSpeakerVolume(float volume)
+{
+    mSignalingThread->PostTask(
+        [this, volume]()
+        {
+            auto receivers = mPeerConnection->GetReceivers();
+
+            RTC_LOG(LS_INFO) << __FUNCTION__ << "Set volume" << receivers.size();
+            for (auto &receiver : receivers)
+            {
+                webrtc::MediaStreamTrackInterface *track = receiver->track().get();
+                if (track->kind() == webrtc::MediaStreamTrackInterface::kAudioKind)
+                {
+                    webrtc::AudioTrackInterface* audio_track = static_cast<webrtc::AudioTrackInterface*>(track);
+                    webrtc::AudioSourceInterface* source = audio_track->GetSource();
+                    source->SetVolume(10.0 * volume);
+
+                }
+            }
+        });
+}
+
 //
 // PeerConnectionObserver implementation.
 //
diff --git a/indra/llwebrtc/llwebrtc.h b/indra/llwebrtc/llwebrtc.h
index acc3665e95..ca558add01 100644
--- a/indra/llwebrtc/llwebrtc.h
+++ b/indra/llwebrtc/llwebrtc.h
@@ -93,6 +93,7 @@ class LLWebRTCAudioInterface
 {
   public:
     virtual void setMute(bool mute) = 0;
+    virtual void setSpeakerVolume(float volume) = 0;  // volume between 0.0 and 1.0
 };
 
 class LLWebRTCSignalingObserver
diff --git a/indra/llwebrtc/llwebrtc_impl.h b/indra/llwebrtc/llwebrtc_impl.h
index d439bd253d..5c6cfcdbc6 100644
--- a/indra/llwebrtc/llwebrtc_impl.h
+++ b/indra/llwebrtc/llwebrtc_impl.h
@@ -125,6 +125,7 @@ class LLWebRTCImpl : public LLWebRTCDeviceInterface,
     // LLWebRTCAudioInterface
     //
     void setMute(bool mute) override;
+    void setSpeakerVolume(float folume) override; // range 0.0-1.0
 
     //
     // PeerConnectionObserver implementation.