From 755762e8ecf7a7a1d70f21ba6a6c15557f5f2914 Mon Sep 17 00:00:00 2001
From: Ken Cooke <ken@highfidelity.io>
Date: Fri, 15 Mar 2019 17:24:50 -0700
Subject: [PATCH] Send InjectorGainSet packet to the audio-mixer

---
 libraries/networking/src/NodeList.cpp | 25 +++++++++++++++++++++++++
 libraries/networking/src/NodeList.h   |  4 ++++
 2 files changed, 29 insertions(+)

diff --git a/libraries/networking/src/NodeList.cpp b/libraries/networking/src/NodeList.cpp
index e6eb6087b0..eec710322e 100644
--- a/libraries/networking/src/NodeList.cpp
+++ b/libraries/networking/src/NodeList.cpp
@@ -265,6 +265,8 @@ void NodeList::reset(bool skipDomainHandlerReset) {
     _avatarGainMap.clear();
     _avatarGainMapLock.unlock();
 
+    _injectorGain = 0.0f;
+
     if (!skipDomainHandlerReset) {
         // clear the domain connection information, unless they're the ones that asked us to reset
         _domainHandler.softReset();
@@ -1087,6 +1089,29 @@ float NodeList::getAvatarGain(const QUuid& nodeID) {
     return 0.0f;
 }
 
+void NodeList::setInjectorGain(float gain) {
+    auto audioMixer = soloNodeOfType(NodeType::AudioMixer);
+    if (audioMixer) {
+        // setup the packet
+        auto setInjectorGainPacket = NLPacket::create(PacketType::InjectorGainSet, sizeof(float), true);
+
+        // We need to convert the gain in dB (from the script) to an amplitude before packing it.
+        setInjectorGainPacket->writePrimitive(packFloatGainToByte(fastExp2f(gain / 6.02059991f)));
+
+        qCDebug(networking) << "Sending Set Injector Gain packet with Gain:" << gain;
+
+        sendPacket(std::move(setInjectorGainPacket), *audioMixer);
+        _injectorGain = gain;
+
+    } else {
+        qWarning() << "Couldn't find audio mixer to send set gain request";
+    }
+}
+
+float NodeList::getInjectorGain() {
+    return _injectorGain;
+}
+
 void NodeList::kickNodeBySessionID(const QUuid& nodeID) {
     // send a request to domain-server to kick the node with the given session ID
     // the domain-server will handle the persistence of the kick (via username or IP)
diff --git a/libraries/networking/src/NodeList.h b/libraries/networking/src/NodeList.h
index e135bc937d..d2a1212d64 100644
--- a/libraries/networking/src/NodeList.h
+++ b/libraries/networking/src/NodeList.h
@@ -83,6 +83,8 @@ public:
     bool isPersonalMutingNode(const QUuid& nodeID) const;
     void setAvatarGain(const QUuid& nodeID, float gain);
     float getAvatarGain(const QUuid& nodeID);
+    void setInjectorGain(float gain);
+    float getInjectorGain();
 
     void kickNodeBySessionID(const QUuid& nodeID);
     void muteNodeBySessionID(const QUuid& nodeID);
@@ -181,6 +183,8 @@ private:
     mutable QReadWriteLock _avatarGainMapLock;
     tbb::concurrent_unordered_map<QUuid, float, UUIDHasher> _avatarGainMap;
 
+    std::atomic<float> _injectorGain { 0.0f };
+
     void sendIgnoreRadiusStateToNode(const SharedNodePointer& destinationNode);
 #if defined(Q_OS_ANDROID)
     Setting::Handle<bool> _ignoreRadiusEnabled { "IgnoreRadiusEnabled", false };