3 files changed, 44 insertions, 7 deletions

diff --git a/indra/llwebrtc/llwebrtc.cpp b/indra/llwebrtc/llwebrtc.cpp
index 0daa767766..a73962f3d6 100644
--- a/indra/llwebrtc/llwebrtc.cpp
+++ b/indra/llwebrtc/llwebrtc.cpp
@@ -45,6 +45,10 @@ static int16_t PLAYOUT_DEVICE_BAD     = -2;
 static int16_t RECORD_DEVICE_DEFAULT  = -1;
 static int16_t RECORD_DEVICE_BAD      = -2;
 
+static const std::string DEFAULT_DEVICE_NAME = "Default";
+static const std::string NO_DEVICE_NAME = "No Device";
+static const std::string NO_DEVICE_GUID;
+
 LLAudioDeviceObserver::LLAudioDeviceObserver() : mSumVector {0}, mMicrophoneEnergy(0.0) {}
 
 float LLAudioDeviceObserver::getMicrophoneEnergy() { return mMicrophoneEnergy; }
@@ -438,7 +442,7 @@ void ll_set_device_module_capture_device(rtc::scoped_refptr<webrtc::AudioDeviceM
 void LLWebRTCImpl::setCaptureDevice(const std::string &id)
 {
     int16_t recordingDevice = RECORD_DEVICE_DEFAULT;
-    if (id != "Default")
+    if (id != DEFAULT_DEVICE_NAME)
     {
         for (int16_t i = 0; i < mRecordingDeviceList.size(); i++)
         {
@@ -502,7 +506,7 @@ void ll_set_device_module_render_device(rtc::scoped_refptr<webrtc::AudioDeviceMo
 void LLWebRTCImpl::setRenderDevice(const std::string &id)
 {
     int16_t playoutDevice = PLAYOUT_DEVICE_DEFAULT;
-    if (id != "Default")
+    if (id != DEFAULT_DEVICE_NAME)
     {
         for (int16_t i = 0; i < mPlayoutDeviceList.size(); i++)
         {
@@ -546,6 +550,16 @@ void LLWebRTCImpl::setRenderDevice(const std::string &id)
     }
 }
 
+bool LLWebRTCImpl::isCaptureNoDevice()
+{
+    return mRecordingDevice == mRecordingNoDevice;
+}
+
+bool LLWebRTCImpl::isRenderNoDevice()
+{
+    return mPlayoutDevice == mPlayoutNoDevice;
+}
+
 // updateDevices needs to happen on the worker thread.
 void LLWebRTCImpl::updateDevices()
 {
@@ -566,6 +580,11 @@ void LLWebRTCImpl::updateDevices()
         mTuningDeviceModule->PlayoutDeviceName(index, name, guid);
         mPlayoutDeviceList.emplace_back(name, guid);
     }
+    mPlayoutNoDevice = (int32_t)mPlayoutDeviceList.size();
+    if (mPlayoutNoDevice)
+    {
+        mPlayoutDeviceList.emplace_back(NO_DEVICE_NAME, NO_DEVICE_GUID);
+    }
 
     int16_t captureDeviceCount        = mTuningDeviceModule->RecordingDevices();
 
@@ -584,6 +603,11 @@ void LLWebRTCImpl::updateDevices()
         mTuningDeviceModule->RecordingDeviceName(index, name, guid);
         mRecordingDeviceList.emplace_back(name, guid);
     }
+    mRecordingNoDevice = (int32_t)mRecordingDeviceList.size();
+    if (mRecordingNoDevice)
+    {
+        mRecordingDeviceList.emplace_back(NO_DEVICE_NAME, NO_DEVICE_GUID);
+    }
 
     for (auto &observer : mVoiceDevicesObserverList)
     {
@@ -933,20 +957,20 @@ void LLWebRTCPeerConnectionImpl::AnswerAvailable(const std::string &sdp)
 void LLWebRTCPeerConnectionImpl::setMute(bool mute)
 {
     mMute = mute;
+    mute |= mWebRTCImpl->isCaptureNoDevice();
     mWebRTCImpl->PostSignalingTask(
-        [this]()
+        [&]()
         {
         if (mPeerConnection)
         {
             auto senders = mPeerConnection->GetSenders();
 
-            RTC_LOG(LS_INFO) << __FUNCTION__ << (mMute ? "disabling" : "enabling") << " streams count " << senders.size();
+            RTC_LOG(LS_INFO) << __FUNCTION__ << (mute ? "disabling" : "enabling") << " streams count " << senders.size();
             for (auto &sender : senders)
             {
-                auto track = sender->track();
-                if (track)
+                if (auto track = sender->track())
                 {
-                    track->set_enabled(!mMute);
+                    track->set_enabled(!mute);
                 }
             }
         }
@@ -960,6 +984,11 @@ void LLWebRTCPeerConnectionImpl::resetMute()
 
 void LLWebRTCPeerConnectionImpl::setReceiveVolume(float volume)
 {
+    if (mWebRTCImpl->isRenderNoDevice())
+    {
+        volume = 0;
+    }
+
     mWebRTCImpl->PostSignalingTask(
         [this, volume]()
         {
diff --git a/indra/llwebrtc/llwebrtc.h b/indra/llwebrtc/llwebrtc.h
index c6fdb909dd..2deaba9e58 100644
--- a/indra/llwebrtc/llwebrtc.h
+++ b/indra/llwebrtc/llwebrtc.h
@@ -151,6 +151,9 @@ class LLWebRTCDeviceInterface
     virtual void setCaptureDevice(const std::string& id) = 0;
     virtual void setRenderDevice(const std::string& id) = 0;
 
+    virtual bool isCaptureNoDevice() = 0;
+    virtual bool isRenderNoDevice() = 0;
+
     // Device observers for device change callbacks.
     virtual void setDevicesObserver(LLWebRTCDevicesObserver *observer) = 0;
     virtual void unsetDevicesObserver(LLWebRTCDevicesObserver *observer) = 0;
diff --git a/indra/llwebrtc/llwebrtc_impl.h b/indra/llwebrtc/llwebrtc_impl.h
index b93a1fdb01..27b7eae8e7 100644
--- a/indra/llwebrtc/llwebrtc_impl.h
+++ b/indra/llwebrtc/llwebrtc_impl.h
@@ -210,6 +210,9 @@ class LLWebRTCImpl : public LLWebRTCDeviceInterface, public webrtc::AudioDeviceS
     void setCaptureDevice(const std::string& id) override;
     void setRenderDevice(const std::string& id) override;
 
+    bool isCaptureNoDevice() override;
+    bool isRenderNoDevice() override;
+
     void setTuningMode(bool enable) override;
     float getTuningAudioLevel() override;
     float getPeerConnectionAudioLevel() override;
@@ -306,9 +309,11 @@ class LLWebRTCImpl : public LLWebRTCDeviceInterface, public webrtc::AudioDeviceS
     // accessors in native webrtc for devices aren't apparently implemented yet.
     bool                                                       mTuningMode;
     int32_t                                                    mRecordingDevice;
+    int32_t                                                    mRecordingNoDevice;
     LLWebRTCVoiceDeviceList                                    mRecordingDeviceList;
 
     int32_t                                                    mPlayoutDevice;
+    int32_t                                                    mPlayoutNoDevice;
     LLWebRTCVoiceDeviceList                                    mPlayoutDeviceList;
 
     bool                                                       mMute;