refactor(call): Refactor toxcall and disconnect lambda on destruction

Fixes #3840

Move audio and video state into ToxCall which both ToxFriendCall and ToxGroupCall inherit from

src/core/coreav.cpp

@@ -204,7 +204,11 @@ bool CoreAV::isCallStarted(const Group* g) const
  */
 bool CoreAV::isCallActive(const Friend* f) const
 {
-    return isCallStarted(f) && calls[f->getId()].isActive();
+    auto it = calls.find(f->getId());
+    if (it == calls.end()) {
+        return false;
+    }
+    return isCallStarted(f) && it->second.isActive();
 }
 
 /**
@@ -214,12 +218,17 @@ bool CoreAV::isCallActive(const Friend* f) const
  */
 bool CoreAV::isCallActive(const Group* g) const
 {
-    return isCallStarted(g) && groupCalls[g->getId()].isActive();
+    auto it = groupCalls.find(g->getId());
+    if (it == groupCalls.end()) {
+        return false;
+    }
+    return isCallStarted(g) && it->second.isActive();
 }
 
 bool CoreAV::isCallVideoEnabled(const Friend* f) const
 {
-    return isCallStarted(f) && calls[f->getId()].getVideoEnabled();
+    auto it = calls.find(f->getId());
+    return isCallStarted(f) && it->second.getVideoEnabled();
 }
 
 bool CoreAV::answerCall(uint32_t friendNum, bool video)
@@ -240,17 +249,18 @@ bool CoreAV::answerCall(uint32_t friendNum, bool video)
     }
 
     qDebug() << QString("answering call %1").arg(friendNum);
-    assert(calls.find(friendNum) != calls.end());
+    auto it = calls.find(friendNum);
+    assert(it != calls.end());
     TOXAV_ERR_ANSWER err;
 
     const uint32_t videoBitrate = video ? VIDEO_DEFAULT_BITRATE : 0;
     if (toxav_answer(toxav, friendNum, Settings::getInstance().getAudioBitrate(), videoBitrate, &err)) {
-        calls[friendNum].setActive(true);
+        it->second.setActive(true);
         return true;
     } else {
         qWarning() << "Failed to answer call with error" << err;
         toxav_call_control(toxav, friendNum, TOXAV_CALL_CONTROL_CANCEL, nullptr);
-        calls.erase(friendNum);
+        calls.erase(it);
         return false;
     }
 }
@@ -273,7 +283,8 @@ bool CoreAV::startCall(uint32_t friendNum, bool video)
     }
 
     qDebug() << QString("Starting call with %1").arg(friendNum);
-    if (calls.find(friendNum) != calls.end()) {
+    auto it = calls.find(friendNum);
+    if (it != calls.end()) {
         qWarning() << QString("Can't start call with %1, we're already in this call!").arg(friendNum);
         return false;
     }
@@ -282,8 +293,8 @@ bool CoreAV::startCall(uint32_t friendNum, bool video)
     if (!toxav_call(toxav, friendNum, Settings::getInstance().getAudioBitrate(), videoBitrate, nullptr))
         return false;
 
-    calls.insert(std::make_pair(friendNum, ToxFriendCall(friendNum, video, *this)));
-    calls[friendNum].startTimeout(friendNum);
+    auto ret = calls.insert(std::make_pair(friendNum, ToxFriendCall(friendNum, video, *this)));
+    ret.first->second.startTimeout(friendNum);
     return true;
 }
 
@@ -341,13 +352,14 @@ void CoreAV::timeoutCall(uint32_t friendNum)
  * @return False only on error, but not if there's nothing to send.
  */
 bool CoreAV::sendCallAudio(uint32_t callId, const int16_t* pcm, size_t samples, uint8_t chans,
-                           uint32_t rate)
+                           uint32_t rate) const
 {
-    if (calls.find(callId) == calls.end()) {
+    auto it = calls.find(callId);
+    if (it == calls.end()) {
         return false;
     }
 
-    ToxFriendCall& call = calls[callId];
+    ToxFriendCall const& call = it->second;
 
     if (call.getMuteMic() || !call.isActive()
         || !(call.getState() & TOXAV_FRIEND_CALL_STATE_ACCEPTING_A)) {
@@ -378,11 +390,12 @@ void CoreAV::sendCallVideo(uint32_t callId, std::shared_ptr<VideoFrame> vframe)
 {
     // We might be running in the FFmpeg thread and holding the CameraSource lock
     // So be careful not to deadlock with anything while toxav locks in toxav_video_send_frame
-    if (calls.find(callId) == calls.end()) {
+    auto it = calls.find(callId);
+    if (it == calls.end()) {
         return;
     }
 
-    ToxFriendCall& call = calls[callId];
+    ToxFriendCall& call = it->second;
 
     if (!call.getVideoEnabled() || !call.isActive()
         || !(call.getState() & TOXAV_FRIEND_CALL_STATE_ACCEPTING_V)) {
@@ -431,8 +444,9 @@ void CoreAV::sendCallVideo(uint32_t callId, std::shared_ptr<VideoFrame> vframe)
  */
 void CoreAV::toggleMuteCallInput(const Friend* f)
 {
-    if (f && (calls.find(f->getId()) != calls.end())) {
-        ToxCall& call = calls[f->getId()];
+    auto it = calls.find(f->getId());
+    if (f && (it != calls.end())) {
+        ToxCall& call = it->second;
         call.setMuteMic(!call.getMuteMic());
     }
 }
@@ -443,8 +457,9 @@ void CoreAV::toggleMuteCallInput(const Friend* f)
  */
 void CoreAV::toggleMuteCallOutput(const Friend* f)
 {
-    if (f && (calls.find(f->getId()) != calls.end())) {
-        ToxCall& call = calls[f->getId()];
+    auto it = calls.find(f->getId());
+    if (f && (it != calls.end())) {
+        ToxCall& call = it->second;
         call.setMuteVol(!call.getMuteVol());
     }
 }
@@ -470,11 +485,12 @@ void CoreAV::groupCallCallback(void* tox, uint32_t group, uint32_t peer, const i
     Core* c = static_cast<Core*>(core);
     CoreAV* cav = c->getAv();
 
-    if (cav->groupCalls.find(group) == cav->groupCalls.end()) {
+    auto it = cav->groupCalls.find(group);
+    if (it == cav->groupCalls.end()) {
         return;
     }
 
-    ToxGroupCall& call = cav->groupCalls[group];
+    ToxGroupCall& call = it->second;
 
     emit c->groupPeerAudioPlaying(group, peer);
 
@@ -499,11 +515,12 @@ void CoreAV::groupCallCallback(void* tox, int group, int peer, const int16_t* da
     Core* c = static_cast<Core*>(core);
     CoreAV* cav = c->getAv();
 
-    if (cav->groupCalls.find(group) == cav->groupCalls.end()) {
+    auto it = cav->groupCalls.find(group);
+    if (it == cav->groupCalls.end()) {
         return;
     }
 
-    ToxGroupCall& call = cav->groupCalls[group];
+    ToxGroupCall& call = it->second;
 
     emit c->groupPeerAudioPlaying(group, peer);
 
@@ -528,9 +545,13 @@ void CoreAV::groupCallCallback(void* tox, int group, int peer, const int16_t* da
  */
 void CoreAV::invalidateGroupCallPeerSource(int group, int peer)
 {
+    auto it = groupCalls.find(group);
+    if (it == groupCalls.end()) {
+        return;
+    }
     Audio& audio = Audio::getInstance();
-    audio.unsubscribeOutput(groupCalls[group].getPeers()[peer]);
-    groupCalls[group].getPeers()[peer] = 0;
+    audio.unsubscribeOutput(it->second.getPeers()[peer]);
+    it->second.getPeers()[peer] = 0;
 }
 
 /**
@@ -548,15 +569,16 @@ void CoreAV::invalidateGroupCallSources(int group)
  * @param friendNum Id of friend in call list.
  * @return Video surface to show
  */
-VideoSource* CoreAV::getVideoSourceFromCall(int friendNum)
+VideoSource* CoreAV::getVideoSourceFromCall(int friendNum) const
 {
-    if (calls.find(friendNum) == calls.end()) {
+    auto it = calls.find(friendNum);
+    if (it == calls.end()) {
         qWarning() << "CoreAV::getVideoSourceFromCall: No such call, did it die before we finished "
                       "answering?";
         return nullptr;
     }
 
-    return calls[friendNum].getVideoSource();
+    return it->second.getVideoSource();
 }
 
 /**
@@ -568,8 +590,12 @@ void CoreAV::joinGroupCall(int groupId)
 {
     qDebug() << QString("Joining group call %1").arg(groupId);
 
-    groupCalls[groupId] = ToxGroupCall{groupId, *this};
-    groupCalls[groupId].setActive(true);
+    auto ret = groupCalls.insert(std::pair<int, ToxGroupCall>(groupId, ToxGroupCall{groupId, *this}));
+    if (ret.second == false) {
+        qWarning() << "This group call already exists, not joining!";
+        return;
+    }
+    ret.first->second.setActive(true);
 }
 
 /**
@@ -585,15 +611,14 @@ void CoreAV::leaveGroupCall(int groupId)
 }
 
 bool CoreAV::sendGroupCallAudio(int groupId, const int16_t* pcm, size_t samples, uint8_t chans,
-                                uint32_t rate)
+                                uint32_t rate) const
 {
-    if (groupCalls.find(groupId) == groupCalls.end()) {
+    std::map<int, ToxGroupCall>::const_iterator it = groupCalls.find(groupId);
+    if (it == groupCalls.end()) {
         return false;
     }
 
-    ToxGroupCall& call = groupCalls[groupId];
-
-    if (!call.isActive() || call.getMuteMic()) {
+    if (!it->second.isActive() || it->second.getMuteMic()) {
         return true;
     }
 
@@ -610,8 +635,9 @@ bool CoreAV::sendGroupCallAudio(int groupId, const int16_t* pcm, size_t samples,
  */
 void CoreAV::muteCallInput(const Group* g, bool mute)
 {
-    if (g && (groupCalls.find(g->getId()) != groupCalls.end())) {
-        groupCalls[g->getId()].setMuteMic(mute);
+    auto it = groupCalls.find(g->getId());
+    if (g && (it != groupCalls.end())) {
+        it->second.setMuteMic(mute);
     }
 }
 
@@ -622,8 +648,9 @@ void CoreAV::muteCallInput(const Group* g, bool mute)
  */
 void CoreAV::muteCallOutput(const Group* g, bool mute)
 {
-    if (g && (groupCalls.find(g->getId()) != groupCalls.end())) {
-        groupCalls[g->getId()].setMuteVol(mute);
+    auto it = groupCalls.find(g->getId());
+    if (g && (it != groupCalls.end())) {
+        it->second.setMuteVol(mute);
     }
 }
 
@@ -639,7 +666,8 @@ bool CoreAV::isGroupCallInputMuted(const Group* g) const
     }
 
     const uint32_t groupId = g->getId();
-    return (groupCalls.find(groupId) != groupCalls.end()) && groupCalls[groupId].getMuteMic();
+    auto it = groupCalls.find(groupId);
+    return (it != groupCalls.end()) && it->second.getMuteMic();
 }
 
 /**
@@ -654,7 +682,8 @@ bool CoreAV::isGroupCallOutputMuted(const Group* g) const
     }
 
     const uint32_t groupId = g->getId();
-    return (groupCalls.find(groupId) != groupCalls.end()) && groupCalls[groupId].getMuteVol();
+    auto it = groupCalls.find(groupId);
+    return (it != groupCalls.end()) && it->second.getMuteVol();
 }
 
 /**
@@ -691,7 +720,8 @@ bool CoreAV::isCallInputMuted(const Friend* f) const
         return false;
     }
     const uint32_t friendId = f->getId();
-    return (calls.find(friendId) != calls.end()) && calls[friendId].getMuteMic();
+    auto it = calls.find(friendId);
+    return (it != calls.end()) && it->second.getMuteMic();
 }
 
 /**
@@ -705,7 +735,8 @@ bool CoreAV::isCallOutputMuted(const Friend* f) const
         return false;
     }
     const uint32_t friendId = f->getId();
-    return (calls.find(friendId) != calls.end()) && calls[f->getId()].getMuteVol();
+    auto it = calls.find(friendId);
+    return (it != calls.end()) && it->second.getMuteVol();
 }
 
 /**
@@ -763,7 +794,8 @@ void CoreAV::callCallback(ToxAV* toxav, uint32_t friendNum, bool audio, bool vid
         return;
     }
 
-    if (self->calls.find(friendNum) != self->calls.end()) {
+    auto it = self->calls.insert(std::pair<uint32_t, ToxFriendCall>(friendNum, ToxFriendCall{friendNum, video, *self}));
+    if (it.second == false) {
         /// Hanging up from a callback is supposed to be UB,
         /// but since currently the toxav callbacks are fired from the toxcore thread,
         /// we'll always reach this point through a non-blocking queud connection, so not in the
@@ -773,7 +805,6 @@ void CoreAV::callCallback(ToxAV* toxav, uint32_t friendNum, bool audio, bool vid
         return;
     }
     qDebug() << QString("Received call invite from %1").arg(friendNum);
-    self->calls[friendNum] = ToxFriendCall{friendNum, video, *self};
 
     // We don't get a state callback when answering, so fill the state ourselves in advance
     int state = 0;
@@ -781,7 +812,8 @@ void CoreAV::callCallback(ToxAV* toxav, uint32_t friendNum, bool audio, bool vid
         state |= TOXAV_FRIEND_CALL_STATE_SENDING_A | TOXAV_FRIEND_CALL_STATE_ACCEPTING_A;
     if (video)
         state |= TOXAV_FRIEND_CALL_STATE_SENDING_V | TOXAV_FRIEND_CALL_STATE_ACCEPTING_V;
-    calls[friendNum].setState(static_cast<TOXAV_FRIEND_CALL_STATE>(state));
+    it.first->second.setState(static_cast<TOXAV_FRIEND_CALL_STATE>(state));
+    // note: changed to self->
 
     emit reinterpret_cast<CoreAV*>(self)->avInvite(friendNum, video);
     self->threadSwitchLock.clear(std::memory_order_release);
@@ -808,21 +840,24 @@ void CoreAV::stateCallback(ToxAV* toxav, uint32_t friendNum, uint32_t state, voi
         return;
     }
 
-    if (self->calls.find(friendNum) == self->calls.end()) {
+    auto it = self->calls.find(friendNum);
+    if (it == self->calls.end()) {
         qWarning() << QString("stateCallback called, but call %1 is already dead").arg(friendNum);
         self->threadSwitchLock.clear(std::memory_order_release);
         return;
     }
 
-    ToxFriendCall& call = self->calls[friendNum];
+    ToxFriendCall& call = it->second;
 
     if (state & TOXAV_FRIEND_CALL_STATE_ERROR) {
         qWarning() << "Call with friend" << friendNum << "died of unnatural causes!";
         calls.erase(friendNum);
+        // why not self->
         emit self->avEnd(friendNum, true);
     } else if (state & TOXAV_FRIEND_CALL_STATE_FINISHED) {
         qDebug() << "Call with friend" << friendNum << "finished quietly";
         calls.erase(friendNum);
+        // why not self->
         emit self->avEnd(friendNum);
     } else {
         // If our state was null, we started the call and were still ringing
@@ -904,11 +939,12 @@ void CoreAV::audioFrameCallback(ToxAV*, uint32_t friendNum, const int16_t* pcm,
                                 uint8_t channels, uint32_t samplingRate, void* vSelf)
 {
     CoreAV* self = static_cast<CoreAV*>(vSelf);
-    if (self->calls.find(friendNum) == self->calls.end()) {
+    auto it = calls.find(friendNum);
+    if (it == self->calls.end()) {
         return;
     }
 
-    ToxFriendCall& call = self->calls[friendNum];
+    ToxFriendCall& call = it->second;
 
     if (call.getMuteVol()) {
         return;
@@ -928,11 +964,12 @@ void CoreAV::videoFrameCallback(ToxAV*, uint32_t friendNum, uint16_t w, uint16_t
                                 const uint8_t* y, const uint8_t* u, const uint8_t* v,
                                 int32_t ystride, int32_t ustride, int32_t vstride, void*)
 {
-    if (calls.find(friendNum) == calls.end()) {
+    auto it = calls.find(friendNum);
+    if (it == calls.end()) {
         return;
     }
 
-    CoreVideoSource* videoSource = calls[friendNum].getVideoSource();
+    CoreVideoSource* videoSource = it->second.getVideoSource();
     if (!videoSource) {
         return;
     }

src/core/coreav.h

@@ -56,12 +56,12 @@ public:
     bool isCallActive(const Group* g) const;
     bool isCallVideoEnabled(const Friend* f) const;
     bool sendCallAudio(uint32_t friendNum, const int16_t* pcm, size_t samples, uint8_t chans,
-                       uint32_t rate);
+                       uint32_t rate) const;
     void sendCallVideo(uint32_t friendNum, std::shared_ptr<VideoFrame> frame);
     bool sendGroupCallAudio(int groupNum, const int16_t* pcm, size_t samples, uint8_t chans,
-                            uint32_t rate);
+                            uint32_t rate) const;
 
-    VideoSource* getVideoSourceFromCall(int callNumber);
+    VideoSource* getVideoSourceFromCall(int callNumber) const;
     void invalidateCallSources();
     void sendNoVideo();
 

src/core/toxcall.cpp

@@ -28,55 +28,111 @@
  * @brief Keeps sources for users in group calls.
  */
 
-using namespace std;
-
-ToxCall::ToxCall()
-    : active{false}
-    , muteMic{false}
-    , muteVol{false}
+ToxCall::ToxCall(uint32_t CallId, bool VideoEnabled, CoreAV& av)
+    : videoEnabled{VideoEnabled}
+    , av{&av}
 {
     Audio& audio = Audio::getInstance();
     audio.subscribeInput();
+    audio.subscribeOutput(alSource);
+
+    audioInConn = QObject::connect(&Audio::getInstance(), &Audio::frameAvailable,
+                                   [&av, CallId](const int16_t* pcm, size_t samples, uint8_t chans,
+                                                 uint32_t rate) {
+                                       av.sendCallAudio(CallId, pcm, samples, chans, rate);
+                                   });
+
+    if (!audioInConn) {
+        qDebug() << "Audio connection not working";
+    }
+
+    if (videoEnabled) {
+        videoSource = new CoreVideoSource();
+        CameraSource& source = CameraSource::getInstance();
+
+        if (source.isNone()) {
+            source.setupDefault();
+        }
+        source.subscribe();
+        videoInConn = QObject::connect(&source, &VideoSource::frameAvailable,
+                                       [&av, CallId](std::shared_ptr<VideoFrame> frame) {
+                                           av.sendCallVideo(CallId, frame);
+                                       });
+        if (!videoInConn) {
+            qDebug() << "Video connection not working";
+        }
+    }
 }
 
-ToxCall::ToxCall(ToxCall&& other) noexcept
-    : audioInConn{other.audioInConn}
-    , active{other.active}
-    , muteMic{other.muteMic}
-    , muteVol{other.muteVol}
+ToxCall::ToxCall(ToxCall&& other) noexcept : audioInConn{other.audioInConn},
+                                             alSource{other.alSource},
+                                             active{other.active},
+                                             muteMic{other.muteMic},
+                                             muteVol{other.muteVol},
+                                             videoInConn{other.videoInConn},
+                                             videoEnabled{other.videoEnabled},
+                                             nullVideoBitrate{other.nullVideoBitrate},
+                                             videoSource{other.videoSource},
+                                             av{other.av}
 {
+    Audio& audio = Audio::getInstance();
+    audio.subscribeInput();
     other.audioInConn = QMetaObject::Connection();
-    // invalidate object, all resources are moved
-    other.valid = false;
+    other.alSource = 0;
+    other.videoInConn = QMetaObject::Connection();
+    other.videoEnabled = false; // we don't need to subscribe video because other won't unsubscribe
+    other.videoSource = nullptr;
+    other.av = nullptr;
 }
 
 ToxCall::~ToxCall()
 {
     Audio& audio = Audio::getInstance();
 
-    // only free resources if they weren't moved
-    if (valid) {
-        QObject::disconnect(audioInConn);
-        audio.unsubscribeInput();
+    QObject::disconnect(audioInConn);
+    audio.unsubscribeInput();
+    audio.unsubscribeOutput(alSource);
+    if (videoEnabled) {
+        QObject::disconnect(videoInConn);
+        CameraSource::getInstance().unsubscribe();
+        // TODO: check if async is still needed
+        // This destructor could be running in a toxav callback while holding toxav locks.
+        // If the CameraSource thread calls toxav *_send_frame, we might deadlock the toxav and
+        // CameraSource locks,
+        // so we unsuscribe asynchronously, it's fine if the webcam takes a couple milliseconds more
+        // to poweroff.
+        QtConcurrent::run([]() { CameraSource::getInstance().unsubscribe(); });
+        if (videoSource) {
+            videoSource->setDeleteOnClose(true);
+            videoSource = nullptr;
+        }
     }
 }
 
 ToxCall& ToxCall::operator=(ToxCall&& other) noexcept
 {
-    if (valid) {
-        // if we're already valid, we need to cleanup our resources since we're going to inherit the resources
-        // that are being moved in
-        QObject::disconnect(audioInConn);
-        Audio::getInstance().unsubscribeInput();
-    }
+    QObject::disconnect(audioInConn);
 
     audioInConn = other.audioInConn;
     other.audioInConn = QMetaObject::Connection();
     active = other.active;
     muteMic = other.muteMic;
     muteVol = other.muteVol;
-    // invalidate object, all resources are moved
-    other.valid = false;
+
+    alSource = other.alSource;
+    other.alSource = 0;
+
+    Audio::getInstance().subscribeInput();
+
+    videoInConn = other.videoInConn;
+    other.videoInConn = QMetaObject::Connection();
+    videoEnabled = other.videoEnabled;
+    other.videoEnabled = false;
+    nullVideoBitrate = other.nullVideoBitrate;
+    videoSource = other.videoSource;
+    other.videoSource = nullptr;
+    av = other.av;
+    other.av = nullptr;
 
     return *this;
 }
@@ -111,186 +167,85 @@ void ToxCall::setMuteMic(bool value)
     muteMic = value;
 }
 
-void ToxFriendCall::startTimeout(uint32_t callId)
-{
-    if (!timeoutTimer) {
-        timeoutTimer = new QTimer();
-        // We might move, so we need copies of members. CoreAV won't move while we're alive
-        CoreAV* avCopy = av;
-        QObject::connect(timeoutTimer, &QTimer::timeout,
-                         [avCopy, callId]() { avCopy->timeoutCall(callId); });
-    }
-
-    if (!timeoutTimer->isActive())
-        timeoutTimer->start(CALL_TIMEOUT);
-}
-
-void ToxFriendCall::stopTimeout()
-{
-    if (!timeoutTimer)
-        return;
-
-    timeoutTimer->stop();
-    delete timeoutTimer;
-    timeoutTimer = nullptr;
-}
-
-bool ToxFriendCall::getVideoEnabled() const
+bool ToxCall::getVideoEnabled() const
 {
     return videoEnabled;
 }
 
-void ToxFriendCall::setVideoEnabled(bool value)
+void ToxCall::setVideoEnabled(bool value)
 {
     videoEnabled = value;
 }
 
-bool ToxFriendCall::getNullVideoBitrate() const
+bool ToxCall::getNullVideoBitrate() const
 {
     return nullVideoBitrate;
 }
 
-void ToxFriendCall::setNullVideoBitrate(bool value)
+void ToxCall::setNullVideoBitrate(bool value)
 {
     nullVideoBitrate = value;
 }
 
-CoreVideoSource* ToxFriendCall::getVideoSource() const
+CoreVideoSource* ToxCall::getVideoSource() const
 {
     return videoSource;
 }
 
-TOXAV_FRIEND_CALL_STATE ToxFriendCall::getState() const
-{
-    return state;
-}
-
-void ToxFriendCall::setState(const TOXAV_FRIEND_CALL_STATE& value)
+quint32 ToxCall::getAlSource() const
 {
-    state = value;
+    return alSource;
 }
 
-quint32 ToxFriendCall::getAlSource() const
+void ToxCall::setAlSource(const quint32& value)
 {
-    return alSource;
+    alSource = value;
 }
 
-void ToxFriendCall::setAlSource(const quint32& value)
+ToxFriendCall::ToxFriendCall(uint32_t FriendNum, bool VideoEnabled, CoreAV& av)
+    : ToxCall(FriendNum, VideoEnabled, av)
 {
-    alSource = value;
 }
 
-ToxFriendCall::ToxFriendCall(uint32_t friendId, bool VideoEnabled, CoreAV& av)
-    : ToxCall()
-    , videoEnabled{VideoEnabled}
-    , nullVideoBitrate{false}
-    , videoSource{nullptr}
-    , state{static_cast<TOXAV_FRIEND_CALL_STATE>(0)}
-    , av{&av}
-    , timeoutTimer{nullptr}
+void ToxFriendCall::startTimeout(uint32_t callId)
 {
-    Audio& audio = Audio::getInstance();
-    audioInConn = QObject::connect(&audio, &Audio::frameAvailable,
-                                   [&av, friendId](const int16_t* pcm, size_t samples,
-                                                   uint8_t chans, uint32_t rate) {
-                                       av.sendCallAudio(friendId, pcm, samples, chans, rate);
-                                   });
-    if (!audioInConn) {
-        qDebug() << "Audio connection not working";
+    if (!timeoutTimer) {
+        timeoutTimer = std::unique_ptr<QTimer>{new QTimer{}};
+        // We might move, so we need copies of members. CoreAV won't move while we're alive
+        CoreAV* avCopy = av;
+        QObject::connect(timeoutTimer.get(), &QTimer::timeout,
+                         [avCopy, callId]() { avCopy->timeoutCall(callId); });
     }
 
-    // subscribe audio output
-    audio.subscribeOutput(alSource);
-
-    if (videoEnabled) {
-        videoSource = new CoreVideoSource;
-        CameraSource& source = CameraSource::getInstance();
-
-        if (source.isNone())
-            source.setupDefault();
-        source.subscribe();
-        QObject::connect(&source, &VideoSource::frameAvailable,
-                         [friendId, &av](shared_ptr<VideoFrame> frame) {
-                             av.sendCallVideo(friendId, frame);
-                         });
-    }
+    if (!timeoutTimer->isActive())
+        timeoutTimer->start(CALL_TIMEOUT);
 }
 
-ToxFriendCall::ToxFriendCall(ToxFriendCall&& other) noexcept
-    : ToxCall(move(other))
-    , alSource{other.alSource}
-    , videoEnabled{other.videoEnabled}
-    , nullVideoBitrate{other.nullVideoBitrate}
-    , videoSource{other.videoSource}
-    , state{other.state}
-    , av{other.av}
-    , timeoutTimer{other.timeoutTimer}
+void ToxFriendCall::stopTimeout()
 {
-    other.videoEnabled = false;
-    other.videoSource = nullptr;
-    other.timeoutTimer = nullptr;
-    // TODO: wrong, because "0" could be a valid source id
-    other.alSource = 0;
+    if (!timeoutTimer)
+        return;
+
+    timeoutTimer->stop();
+    timeoutTimer.reset();
 }
 
-ToxFriendCall::~ToxFriendCall()
+TOXAV_FRIEND_CALL_STATE ToxFriendCall::getState() const
 {
-    if (timeoutTimer)
-        delete timeoutTimer;
-
-    if (videoEnabled) {
-        // This destructor could be running in a toxav callback while holding toxav locks.
-        // If the CameraSource thread calls toxav *_send_frame, we might deadlock the toxav and
-        // CameraSource locks,
-        // so we unsuscribe asynchronously, it's fine if the webcam takes a couple milliseconds more
-        // to poweroff.
-        QtConcurrent::run([]() { CameraSource::getInstance().unsubscribe(); });
-        if (videoSource) {
-            videoSource->setDeleteOnClose(true);
-            videoSource = nullptr;
-        }
-    }
-    if (valid) {
-        Audio::getInstance().unsubscribeOutput(alSource);
-    }
+    return state;
 }
 
-ToxFriendCall& ToxFriendCall::operator=(ToxFriendCall&& other) noexcept
+void ToxFriendCall::setState(const TOXAV_FRIEND_CALL_STATE& value)
 {
-    ToxCall::operator=(move(other));
-    videoEnabled = other.videoEnabled;
-    other.videoEnabled = false;
-    videoSource = other.videoSource;
-    other.videoSource = nullptr;
-    state = other.state;
-    timeoutTimer = other.timeoutTimer;
-    other.timeoutTimer = nullptr;
-    av = other.av;
-    nullVideoBitrate = other.nullVideoBitrate;
-    alSource = other.alSource;
-    // TODO: wrong, because "0" could be a valid source id
-    other.alSource = 0;
-
-    return *this;
+    state = value;
 }
 
 ToxGroupCall::ToxGroupCall(int GroupNum, CoreAV& av)
-    : ToxCall()
+    : ToxCall(static_cast<uint32_t>(GroupNum), false, av)
 {
-    static_assert(
-        numeric_limits<uint32_t>::max() >= numeric_limits<decltype(GroupNum)>::max(),
-        "The callId must be able to represent any group number, change its type if needed");
-
-    audioInConn = QObject::connect(&Audio::getInstance(), &Audio::frameAvailable,
-                                   [&av, GroupNum](const int16_t* pcm, size_t samples,
-                                                   uint8_t chans, uint32_t rate) {
-                                       av.sendGroupCallAudio(GroupNum, pcm, samples, chans, rate);
-                                   });
 }
 
-ToxGroupCall::ToxGroupCall(ToxGroupCall&& other) noexcept
-    : ToxCall(move(other))
-    , peers{other.peers}
+ToxGroupCall::ToxGroupCall(ToxGroupCall&& other) noexcept : ToxCall(std::move(other)), peers{other.peers}
 {
     // all peers were moved, this ensures audio output is unsubscribed only once
     other.peers.clear();
@@ -307,7 +262,7 @@ ToxGroupCall::~ToxGroupCall()
 
 ToxGroupCall& ToxGroupCall::operator=(ToxGroupCall&& other) noexcept
 {
-    ToxCall::operator=(move(other));
+    ToxCall::operator=(std::move(other));
     peers = other.peers;
     other.peers.clear();
 

src/core/toxcall.h

@@ -1,6 +1,7 @@
 #ifndef TOXCALL_H
 #define TOXCALL_H
 
+#include <memory>
 #include <QMap>
 #include <QMetaObject>
 #include <QtGlobal>
@@ -16,7 +17,8 @@ class CoreAV;
 class ToxCall
 {
 protected:
-    explicit ToxCall();
+    ToxCall() = delete;
+    ToxCall(uint32_t CallId, bool VideoEnabled, CoreAV& av);
     ~ToxCall();
 
 public:
@@ -26,7 +28,6 @@ public:
     ToxCall& operator=(const ToxCall& other) = delete;
     ToxCall& operator=(ToxCall&& other) noexcept;
 
-    bool isInactive() const;
     bool isActive() const;
     void setActive(bool value);
 
@@ -36,60 +37,58 @@ public:
     bool getMuteMic() const;
     void setMuteMic(bool value);
 
+    bool getVideoEnabled() const;
+    void setVideoEnabled(bool value);
+
+    bool getNullVideoBitrate() const;
+    void setNullVideoBitrate(bool value);
+
+    CoreVideoSource* getVideoSource() const;
+
+    quint32 getAlSource() const;
+    void setAlSource(const quint32& value);
+
 protected:
+    bool active{false};
+    CoreAV* av{nullptr};
+    // audio
     QMetaObject::Connection audioInConn;
-    bool active;
-    bool muteMic;
-    bool muteVol;
-    bool valid = true;
+    bool muteMic{false};
+    bool muteVol{false};
+    quint32 alSource{0};
+    // video
+    CoreVideoSource* videoSource{nullptr};
+    QMetaObject::Connection videoInConn;
+    bool videoEnabled{false};
+    bool nullVideoBitrate{false};
 };
 
 class ToxFriendCall : public ToxCall
 {
 public:
-    ToxFriendCall() = default;
+    ToxFriendCall() = delete;
     ToxFriendCall(uint32_t friendId, bool VideoEnabled, CoreAV& av);
-    ToxFriendCall(ToxFriendCall&& other) noexcept;
-    ~ToxFriendCall();
-
-    ToxFriendCall& operator=(ToxFriendCall&& other) noexcept;
+    ToxFriendCall(ToxFriendCall&& other) noexcept = default;
+    ToxFriendCall& operator=(ToxFriendCall&& other) noexcept = default;
 
     void startTimeout(uint32_t callId);
     void stopTimeout();
 
-    bool getVideoEnabled() const;
-    void setVideoEnabled(bool value);
-
-    bool getNullVideoBitrate() const;
-    void setNullVideoBitrate(bool value);
-
-    CoreVideoSource* getVideoSource() const;
-
     TOXAV_FRIEND_CALL_STATE getState() const;
     void setState(const TOXAV_FRIEND_CALL_STATE& value);
 
-    quint32 getAlSource() const;
-    void setAlSource(const quint32& value);
-
-private:
-    quint32 alSource;
-    bool videoEnabled;
-    bool nullVideoBitrate;
-    CoreVideoSource* videoSource;
-    TOXAV_FRIEND_CALL_STATE state;
-
 protected:
-    CoreAV* av;
-    QTimer* timeoutTimer;
+    std::unique_ptr<QTimer> timeoutTimer;
 
 private:
+    TOXAV_FRIEND_CALL_STATE state{TOXAV_FRIEND_CALL_STATE_NONE};
     static constexpr int CALL_TIMEOUT = 45000;
 };
 
 class ToxGroupCall : public ToxCall
 {
 public:
-    ToxGroupCall() = default;
+    ToxGroupCall() = delete;
     ToxGroupCall(int GroupNum, CoreAV& av);
     ToxGroupCall(ToxGroupCall&& other) noexcept;
     ~ToxGroupCall();

src/video/corevideosource.h

@@ -50,7 +50,7 @@ private:
     std::atomic_bool stopped;
 
     friend class CoreAV;
-    friend class ToxFriendCall;
+    friend class ToxCall;
 };
 
 #endif // COREVIDEOSOURCE_H