input_common: Add camera driver

src/input_common/drivers/camera.h

@@ -0,0 +1,29 @@
+// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "input_common/input_engine.h"
+
+namespace InputCommon {
+
+/**
+ * A button device factory representing a keyboard. It receives keyboard events and forward them
+ * to all button devices it created.
+ */
+class Camera final : public InputEngine {
+public:
+    explicit Camera(std::string input_engine_);
+
+    void SetCameraData(std::size_t width, std::size_t height, std::vector<u32> data);
+
+    std::size_t getImageWidth() const;
+    std::size_t getImageHeight() const;
+
+    Common::Input::CameraError SetCameraFormat(const PadIdentifier& identifier_,
+                                               Common::Input::CameraFormat camera_format) override;
+
+    Common::Input::CameraStatus status{};
+};
+
+} // namespace InputCommon