input_common: Create virtual amiibo driver

src/input_common/drivers/virtual_amiibo.h

@@ -0,0 +1,61 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <array>
+#include <string>
+#include <vector>
+
+#include "common/common_types.h"
+#include "input_common/input_engine.h"
+
+namespace Common::FS {
+class IOFile;
+}
+
+namespace InputCommon {
+
+class VirtualAmiibo final : public InputEngine {
+public:
+    enum class State {
+        Initialized,
+        WaitingForAmiibo,
+        AmiiboIsOpen,
+    };
+
+    enum class Info {
+        Success,
+        UnableToLoad,
+        NotAnAmiibo,
+        WrongDeviceState,
+        Unknown,
+    };
+
+    explicit VirtualAmiibo(std::string input_engine_);
+    ~VirtualAmiibo() override;
+
+    // Sets polling mode to a controller
+    Common::Input::PollingError SetPollingMode(
+        const PadIdentifier& identifier_, const Common::Input::PollingMode polling_mode_) override;
+
+    Common::Input::NfcState SupportsNfc(const PadIdentifier& identifier_) override;
+
+    Common::Input::NfcState WriteNfcData(const PadIdentifier& identifier_,
+                                         const std::vector<u8>& data) override;
+
+    State GetCurrentState() const;
+
+    Info LoadAmiibo(const std::string& amiibo_file);
+    Info CloseAmiibo();
+
+private:
+    static constexpr std::size_t amiibo_size = 0x21C;
+    static constexpr std::size_t amiibo_size_without_password = amiibo_size - 0x8;
+
+    std::string file_path{};
+    State state{State::Initialized};
+    std::vector<u8> amiibo_data;
+    Common::Input::PollingMode polling_mode{Common::Input::PollingMode::Pasive};
+};
+} // namespace InputCommon