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////////////////////////////////////////////////////////////////////////////////////////
//
// Nestopia - NES/Famicom emulator written in C++
//
// Copyright (C) 2003-2008 Martin Freij
//
// This file is part of Nestopia.
//
// Nestopia is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// Nestopia is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Nestopia; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
////////////////////////////////////////////////////////////////////////////////////////
#ifndef NST_IMAGE_H
#define NST_IMAGE_H
#ifdef NST_PRAGMA_ONCE
#pragma once
#endif
#include <iosfwd>
namespace Nes
{
namespace Core
{
namespace State
{
class Loader;
class Saver;
}
class ImageDatabase;
class Cpu;
class Apu;
class Ppu;
class NST_NO_VTABLE Image
{
public:
enum Type
{
UNKNOWN = 0x0,
CARTRIDGE = 0x1,
DISK = 0x2,
SOUND = 0x4
};
typedef void* ExternalDevice;
enum ExternalDeviceType
{
EXT_DIP_SWITCHES = 1,
EXT_BARCODE_READER
};
struct Context
{
const Type type;
Cpu& cpu;
Apu& apu;
Ppu& ppu;
std::istream& stream;
std::istream* const patch;
const bool patchBypassChecksum;
Result* const patchResult;
const FavoredSystem favoredSystem;
const bool askProfile;
const ImageDatabase* const database;
Result result;
Context(Type t,Cpu& c,Apu& a,Ppu& p,std::istream& s,std::istream* h,bool k,Result* r,FavoredSystem f,bool b,const ImageDatabase* d)
: type(t), cpu(c), apu(a), ppu(p), stream(s), patch(h), patchBypassChecksum(k), patchResult(r), favoredSystem(f), askProfile(b), database(d), result(RESULT_OK) {}
};
static Image* Load(Context&);
static void Unload(Image*);
virtual void Reset(bool) = 0;
virtual bool PowerOff()
{
return true;
}
virtual void VSync() {}
virtual void LoadState(State::Loader&) {}
virtual void SaveState(State::Saver&,dword) const {}
virtual uint GetDesiredController(uint) const;
virtual uint GetDesiredAdapter() const;
virtual Region GetDesiredRegion() const = 0;
virtual System GetDesiredSystem(Region,CpuModel* = NULL,PpuModel* = NULL) const;
virtual dword GetPrgCrc() const
{
return 0;
}
virtual ExternalDevice QueryExternalDevice(ExternalDeviceType)
{
return NULL;
}
protected:
explicit Image(Type);
virtual ~Image() {}
enum
{
INES_ID = AsciiId<'N','E','S'>::V | 0x1AUL << 24,
UNIF_ID = AsciiId<'U','N','I','F'>::V,
FDS_ID = AsciiId<'F','D','S'>::V | 0x1AUL << 24,
FDS_RAW_ID = 0x494E2A01,
NSF_ID = AsciiId<'N','E','S','M'>::V
};
private:
const Type type;
public:
Type GetType() const
{
return type;
}
};
}
}
#endif
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