camera: refactor (add qt_camera_base)

src/citra_qt/camera/qt_camera_base.h

@@ -0,0 +1,36 @@
+// Copyright 2018 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <string>
+#include "core/frontend/camera/factory.h"
+
+namespace Camera {
+
+// Base class for camera interfaces of citra_qt
+class QtCameraInterface : public CameraInterface {
+public:
+    QtCameraInterface(const Service::CAM::Flip& flip);
+    void SetResolution(const Service::CAM::Resolution&) override;
+    void SetFlip(Service::CAM::Flip) override;
+    void SetEffect(Service::CAM::Effect) override;
+    void SetFormat(Service::CAM::OutputFormat) override;
+    std::vector<u16> ReceiveFrame() override;
+    virtual QImage QtReceiveFrame() = 0;
+
+private:
+    int width, height;
+    bool output_rgb;
+    bool flip_horizontal, flip_vertical;
+    bool basic_flip_horizontal, basic_flip_vertical;
+};
+
+// Base class for camera factories of citra_qt
+class QtCameraFactory : public CameraFactory {
+    std::unique_ptr<CameraInterface> CreatePreview(const std::string& config, int width, int height,
+                                                   const Service::CAM::Flip& flip) const override;
+};
+
+} // namespace Camera