// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef D3D8_Direct3DResource8_hpp
#define D3D8_Direct3DResource8_hpp

#include "Unknown.hpp"

#include <d3d8.h>

#include <map>

namespace D3D8
{
	class Direct3DDevice8;

	class Direct3DResource8 : public IDirect3DResource8, public Unknown
	{
	public:
		Direct3DResource8(Direct3DDevice8 *device, D3DRESOURCETYPE type, unsigned int size);

		virtual ~Direct3DResource8();

		// IUnknown methods
		long __stdcall QueryInterface(const IID &iid, void **object);
		unsigned long __stdcall AddRef();
		unsigned long __stdcall Release();

		// IDirect3DResource8 methods
		long __stdcall GetDevice(IDirect3DDevice8 **device);
		long __stdcall SetPrivateData(const GUID &guid, const void *data, unsigned long size, unsigned long flags);
		long __stdcall GetPrivateData(const GUID &guid, void *data, unsigned long *size);
		long __stdcall FreePrivateData(const GUID &guid);
		unsigned long __stdcall SetPriority(unsigned long newPriority);
		unsigned long __stdcall GetPriority();
		void __stdcall PreLoad();
		D3DRESOURCETYPE __stdcall GetType();

		// Internal methods
		static unsigned int getMemoryUsage();

	protected:
		// Creation parameters
		Direct3DDevice8 *const device;
		const D3DRESOURCETYPE type;
		const unsigned int size;

	private:
		unsigned long priority;

		struct PrivateData
		{
			PrivateData();
			PrivateData(const void *data, int size, bool managed);

			~PrivateData();

			PrivateData &operator=(const PrivateData &privateData);

			void *data;
			unsigned long size;
			bool managed;   // IUnknown interface
		};

		struct CompareGUID
		{
			bool operator()(const GUID& left, const GUID& right) const
			{
				return memcmp(&left, &right, sizeof(GUID)) < 0;
			}
		};

		typedef std::map<GUID, PrivateData, CompareGUID> PrivateDataMap;
		typedef PrivateDataMap::iterator Iterator;
		PrivateDataMap privateData;

		static unsigned int memoryUsage;
	};
}

#endif   // D3D8_Direct3DResource8_hpp