project64/Source/Project64/Plugins/Plugin Base.h

/****************************************************************************
*                                                                           *
* Project 64 - A Nintendo 64 emulator.                                      *
* http://www.pj64-emu.com/                                                  *
* Copyright (C) 2012 Project64. All rights reserved.                        *
*                                                                           *
* License:                                                                  *
* GNU/GPLv2 http://www.gnu.org/licenses/gpl-2.0.html                        *
*                                                                           *
****************************************************************************/
#pragma once

class CPlugin
{
public:
	CPlugin();
	virtual ~CPlugin();
	inline stdstr PluginName() const { return m_PluginInfo.Name; }
	inline bool Initilized() { return m_Initilized; }

	virtual int GetDefaultSettingStartRange() const = 0;
	virtual int GetSettingStartRange() const = 0;

	bool Load ( const char * FileName );

	void RomOpened();
	void RomClose();
	void GameReset();
	void Close();

	void(__cdecl *DllAbout)			(HWND hWnd);
	void(__cdecl *DllConfig)		(DWORD hParent);

protected:

	void UnloadPlugin();
	const char * PluginType () const;
	TraceType PluginTraceType () const;
	virtual void UnloadPluginDetails() = 0;
	virtual PLUGIN_TYPE type() = 0;
	virtual bool LoadFunctions ( void ) = 0;

	void(__cdecl *CloseDLL)		(void);
	void(__cdecl *RomOpen)			(void);
	void(__cdecl *RomClosed)	    (void);
	void(__cdecl *PluginOpened)(void);
	void(__cdecl *SetSettingInfo)	(PLUGIN_SETTINGS  *);
	void(__cdecl *SetSettingInfo2)	(PLUGIN_SETTINGS2 *);
	void(__cdecl *SetSettingInfo3)	(PLUGIN_SETTINGS3 *);

	void * m_hDll;
	bool   m_Initilized, m_RomOpen;
	PLUGIN_INFO m_PluginInfo;

	// Loads a function pointer from the currently loaded DLL
	template <typename T>
	void _LoadFunction(const char * szFunctionName, T & functionPointer) {
		functionPointer = (T)GetProcAddress((HMODULE)m_hDll, szFunctionName);
	}

	// Simple wrapper around _LoadFunction() to avoid having to specify the same two arguments
	// i.e. _LoadFunction("CloseDLL", CloseDLL);
#define LoadFunction(functionName) _LoadFunction(#functionName, functionName)
};