Camera fixes (#6181)

src/citra_qt/camera/qt_multimedia_camera.cpp

@@ -199,6 +199,7 @@ void QtMultimediaCameraHandler::StartCamera() {
     camera->setViewfinderSettings(settings);
     camera->start();
     started = true;
+    paused = false;
 }
 
 bool QtMultimediaCameraHandler::CameraAvailable() const {
@@ -210,13 +211,14 @@ void QtMultimediaCameraHandler::StopCameras() {
     for (auto& handler : handlers) {
         if (handler && handler->started) {
             handler->StopCamera();
+            handler->paused = true;
         }
     }
 }
 
 void QtMultimediaCameraHandler::ResumeCameras() {
     for (auto& handler : handlers) {
-        if (handler && handler->started) {
+        if (handler && handler->paused) {
             handler->StartCamera();
         }
     }
@@ -228,6 +230,7 @@ void QtMultimediaCameraHandler::ReleaseHandlers() {
     for (std::size_t i = 0; i < handlers.size(); i++) {
         status[i] = false;
         handlers[i]->started = false;
+        handlers[i]->paused = false;
     }
 }
 

src/citra_qt/camera/qt_multimedia_camera.h

@@ -90,6 +90,7 @@ private:
     QtCameraSurface camera_surface{};
     QCameraViewfinderSettings settings;
     bool started = false;
+    bool paused = false; // was previously started but was paused, to be resumed
 
     static std::array<std::shared_ptr<QtMultimediaCameraHandler>, 3> handlers;
     static std::array<bool, 3> status;

src/citra_qt/macos_authorization.mm

@@ -9,13 +9,19 @@
 
 namespace AppleAuthorization {
 
+static bool authorized_camera = false;
+static bool authorized_microphone = false;
+
 static bool authorized = false;
 
 enum class AuthMediaType { Camera, Microphone };
 
 // Based on
 // https://developer.apple.com/documentation/avfoundation/cameras_and_media_capture/requesting_authorization_for_media_capture_on_macos
+// TODO: This could be rewritten to return the authorization state, having pure c++ code deal with
+// it, log information and possibly wait for the camera access request.
 void CheckAuthorization(AuthMediaType type) {
+    authorized = false;
     if (@available(macOS 10.14, *)) {
         NSString* media_type;
         if (type == AuthMediaType::Camera) {
@@ -69,13 +75,19 @@ void CheckAuthorization(AuthMediaType type) {
 }
 
 bool CheckAuthorizationForCamera() {
-    CheckAuthorization(AuthMediaType::Camera);
+    if (!authorized_camera) {
-    return authorized;
+        CheckAuthorization(AuthMediaType::Camera);
+        authorized_camera = authorized;
+    }
+    return authorized_camera;
 }
 
 bool CheckAuthorizationForMicrophone() {
-    CheckAuthorization(AuthMediaType::Microphone);
+    if (!authorized_microphone) {
-    return authorized;
+        CheckAuthorization(AuthMediaType::Microphone);
+        authorized_microphone = authorized;
+    }
+    return authorized_microphone;
 }
 
 } // AppleAuthorization