Fix build issues from merge

Author: bghgary

Core/Graphics/Source/DeviceImpl.cpp

@@ -300,9 +300,16 @@ namespace Babylon::Graphics
         return m_afterRenderDispatcher.scheduler();
     }
 
-    void DeviceImpl::RequestScreenShot(std::function<void(std::vector<uint8_t>)> callback)
+    arcana::task<std::vector<uint8_t>, std::exception_ptr> DeviceImpl::RequestScreenShotAsync()
     {
-        m_screenShotCallbacks.push(std::move(callback));
+        arcana::task_completion_source<std::vector<uint8_t>, std::exception_ptr> taskCompletionSource{};
+
+        m_screenShotCallbacks.push([taskCompletionSource](std::vector<uint8_t> bytes) mutable
+        {
+            taskCompletionSource.complete(std::move(bytes));
+        });
+
+        return taskCompletionSource.as_task();
     }
 
     arcana::task<void, std::exception_ptr> DeviceImpl::ReadTextureAsync(bgfx::TextureHandle handle, gsl::span<uint8_t> data, uint8_t mipLevel)

Core/Graphics/Source/DeviceImpl.h

@@ -78,8 +78,6 @@ namespace Babylon::Graphics
         continuation_scheduler<>& BeforeRenderScheduler();
         continuation_scheduler<>& AfterRenderScheduler();
 
-        Update GetUpdate(const char* updateName);
-
         arcana::task<std::vector<uint8_t>, std::exception_ptr> RequestScreenShotAsync();
 
         arcana::task<void, std::exception_ptr> ReadTextureAsync(bgfx::TextureHandle handle, gsl::span<uint8_t> data, uint8_t mipLevel);

Dependencies/arcana.cpp

@@ -16,7 +16,7 @@ namespace Babylon::Plugins
         auto mediaStreamObject{Napi::Persistent(GetConstructor(env).New({}))};
         auto mediaStream{MediaStream::Unwrap(mediaStreamObject.Value())};
 
-        return mediaStream->ApplyInitialConstraintsAsync(constraints).then(mediaStream->m_runtimeScheduler, arcana::cancellation::none(), [mediaStreamObject{std::move(mediaStreamObject)}]() {
+        return mediaStream->ApplyInitialConstraintsAsync(constraints).then(arcana::inline_scheduler, arcana::cancellation::none(), [mediaStreamObject{std::move(mediaStreamObject)}]() {
             return mediaStreamObject.Value();
         });
     }
@@ -58,14 +58,18 @@ namespace Babylon::Plugins
 
     MediaStream::~MediaStream()
     {
-        // TODO: Is this still necessary?
-//        if (m_cameraDevice != nullptr)
-//        {
-//            // The cameraDevice should be destroyed on the JS thread as it may need to access main thread resources
-//            // move ownership of the cameraDevice to a lambda and dispatch it with the runtimeScheduler so the destructor
-//            // is called from that thread.
-//            m_runtimeScheduler.Get()([cameraDevice = std::move(m_cameraDevice)]() {});
-//        }
+        m_cancellationSource.cancel();
+
+        // HACK: This is a hack to make sure the camera device is destroyed on the JS thread.
+        // The napi-jsi adapter currently calls the destructors of JS objects possibly on the wrong thread.
+        // Once this is fixed, this hack will no longer be needed.
+        if (m_cameraDevice != nullptr)
+        {
+            // The cameraDevice should be destroyed on the JS thread as it may need to access main thread resources
+            // move ownership of the cameraDevice to a lambda and dispatch it with the runtimeScheduler so the destructor
+            // is called from that thread.
+            m_runtimeScheduler.Get()([cameraDevice = std::move(m_cameraDevice)]() {});
+        }
 
         // Wait for async operations to complete.
         m_runtimeScheduler.Rundown();
@@ -124,7 +128,7 @@ namespace Babylon::Plugins
         // Create a persistent ref to the constraints object so it isn't destructed during our async work
         auto constraintsRef{Napi::Persistent(constraints)};
 
-        return m_cameraDevice->OpenAsync(bestCamera.value().second).then(m_runtimeScheduler.Get(), arcana::cancellation::none(), [this, constraintsRef{std::move(constraintsRef)}](CameraDevice::CameraDimensions cameraDimensions) {
+        return m_cameraDevice->OpenAsync(bestCamera.value().second).then(m_runtimeScheduler.Get(), m_cancellationSource, [this, constraintsRef{std::move(constraintsRef)}](CameraDevice::CameraDimensions cameraDimensions) {
             this->Width = cameraDimensions.width;
             this->Height = cameraDimensions.height;
 

Plugins/NativeCamera/Source/MediaStream.cpp

@@ -46,6 +46,7 @@ namespace Babylon::Plugins
         // Capture CameraDevice in a shared_ptr because the iOS implementation relies on the `shared_from_this` syntax for async work
         std::shared_ptr<CameraDevice> m_cameraDevice{};
         JsRuntimeScheduler m_runtimeScheduler;
+        arcana::cancellation_source m_cancellationSource;
 
         Napi::ObjectReference m_currentConstraints{};
     };