fix injector fail on lack of local if

- consolidate codepaths for new/restarted injections
- allow network injection without local injection

libraries/audio/src/AudioInjector.cpp

@@ -96,26 +96,6 @@ void AudioInjector::finish() {
     }
 }
 
-void AudioInjector::setupInjection() {
-    if (!_hasSetup) {
-        _hasSetup = true;
-
-        // check if we need to offset the sound by some number of seconds
-        if (_options.secondOffset > 0.0f) {
-
-            // convert the offset into a number of bytes
-            int byteOffset = (int) floorf(AudioConstants::SAMPLE_RATE * _options.secondOffset * (_options.stereo ? 2.0f : 1.0f));
-            byteOffset *= sizeof(int16_t);
-
-            _currentSendOffset = byteOffset;
-        } else {
-            _currentSendOffset = 0;
-        }
-    } else {
-        qCDebug(audio) << "AudioInjector::setupInjection called but already setup.";
-    }
-}
-
 void AudioInjector::restart() {
     // grab the AudioInjectorManager
     auto injectorManager = DependencyManager::get<AudioInjectorManager>();
@@ -143,30 +123,37 @@ void AudioInjector::restart() {
 
     // check our state to decide if we need extra handling for the restart request
     if (stateHas(AudioInjectorState::Finished)) {
-        // we finished playing, need to reset state so we can get going again
-        _hasSetup = false;
-        _shouldStop = false;
-        _state = AudioInjectorState::NotFinished;
-
-        // call inject audio to start injection over again
-        setupInjection();
-
-        // inject locally
-        if(injectLocally()) {
-
-            // if not localOnly, wake the AudioInjectorManager back up if it is stuck waiting
-            if (!_options.localOnly) {
-
-                if (!injectorManager->restartFinishedInjector(this)) {
-                    _state = AudioInjectorState::Finished; // we're not playing, so reset the state used by isPlaying.
-                }
-            }
-        } else {
-            _state = AudioInjectorState::Finished; // we failed to play, so we are finished again
+        if (!inject(&AudioInjectorManager::restartFinishedInjector)) {
+            qWarning() << "AudioInjector::restart failed to thread injector";
         }
     }
 }
 
+bool AudioInjector::inject(bool(AudioInjectorManager::*injection)(AudioInjector*)) {
+    _state = AudioInjectorState::NotFinished;
+
+    int byteOffset = 0;
+    if (_options.secondOffset > 0.0f) {
+        byteOffset = (int)floorf(AudioConstants::SAMPLE_RATE * _options.secondOffset * (_options.stereo ? 2.0f : 1.0f));
+        byteOffset *= sizeof(AudioConstants::SAMPLE_SIZE);
+    }
+    _currentSendOffset = byteOffset;
+
+    if (!injectLocally()) {
+        finishLocalInjection();
+    }
+
+    bool success = true;
+    if (!_options.localOnly) {
+        auto injectorManager = DependencyManager::get<AudioInjectorManager>();
+        if (!(*injectorManager.*injection)(this)) {
+            success = false;
+            finishNetworkInjection();
+        }
+    }
+    return success;
+}
+
 bool AudioInjector::injectLocally() {
     bool success = false;
     if (_localAudioInterface) {
@@ -195,11 +182,6 @@ bool AudioInjector::injectLocally() {
         qCDebug(audio) << "AudioInjector::injectLocally cannot inject locally with no local audio interface present.";
     }
 
-    if (!success) {
-        // we never started so we are finished with local injection
-        finishLocalInjection();
-    }
-
     return success;
 }
 
@@ -474,24 +456,8 @@ AudioInjector* AudioInjector::playSoundAndDelete(const QByteArray& buffer, const
 
 AudioInjector* AudioInjector::playSound(const QByteArray& buffer, const AudioInjectorOptions options) {
     AudioInjector* injector = new AudioInjector(buffer, options);
-
-    // grab the AudioInjectorManager
-    auto injectorManager = DependencyManager::get<AudioInjectorManager>();
-
-    // setup parameters required for injection
-    injector->setupInjection();
-
-    // we always inject locally, except when there is no localInterface
-    injector->injectLocally();
-
-    // if localOnly, we are done, just return injector.
-    if (!options.localOnly) {
-
-        // send off to server for everyone else
-        if (!injectorManager->threadInjector(injector)) {
-            // we failed to thread the new injector (we are at the max number of injector threads)
-            qDebug() << "AudioInjector::playSound failed to thread injector";
-        }
+    if (!injector->inject(&AudioInjectorManager::threadInjector)) {
+        qWarning() << "AudioInjector::playSound failed to thread injector";
     }
     return injector;
 }

libraries/audio/src/AudioInjector.h

@@ -92,8 +92,8 @@ signals:
     void restarting();
     
 private:
-    void setupInjection();
     int64_t injectNextFrame();
+    bool inject(bool(AudioInjectorManager::*injection)(AudioInjector*));
     bool injectLocally();
     
     static AbstractAudioInterface* _localAudioInterface;
@@ -102,8 +102,6 @@ private:
     AudioInjectorOptions _options;
     AudioInjectorState _state { AudioInjectorState::NotFinished };
     bool _hasSentFirstFrame { false };
-    bool _hasSetup { false };
-    bool _shouldStop { false };
     float _loudness { 0.0f };
     int _currentSendOffset { 0 };
     std::unique_ptr<NLPacket> _currentPacket { nullptr };

libraries/audio/src/AudioInjectorManager.cpp

@@ -157,8 +157,6 @@ bool AudioInjectorManager::threadInjector(AudioInjector* injector) {
         // move the injector to the QThread
         injector->moveToThread(_thread);
         
-        // handle a restart once the injector has finished
-        
         // add the injector to the queue with a send timestamp of now
         _injectors.emplace(usecTimestampNow(), InjectorQPointer { injector });
         
@@ -170,13 +168,17 @@ bool AudioInjectorManager::threadInjector(AudioInjector* injector) {
 }
 
 bool AudioInjectorManager::restartFinishedInjector(AudioInjector* injector) {
-    if (!_shouldStop) {
-        // guard the injectors vector with a mutex
-        Lock lock(_injectorsMutex);
-        
-        if (wouldExceedLimits()) {
-            return false;
-        }
+    if (_shouldStop) {
+        qDebug() << "AudioInjectorManager::threadInjector asked to thread injector but is shutting down.";
+        return false;
+    }
+
+    // guard the injectors vector with a mutex
+    Lock lock(_injectorsMutex);
+
+    if (wouldExceedLimits()) {
+        return false;
+    } else {
         // add the injector to the queue with a send timestamp of now
         _injectors.emplace(usecTimestampNow(), InjectorQPointer { injector });