////////////////////////////////////////////////////////////////////////////////////////
//
// 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
//
////////////////////////////////////////////////////////////////////////////////////////

#include "NstAssert.hpp"
#include "NstZlib.hpp"

#ifndef NST_NO_ZLIB

 #ifdef NST_WIN32

  #if NST_MSVC >= 800
  #define ZEXPORT __stdcall
  #else
  #define ZLIB_WINAPI
  #endif

 #endif

 #include "zlib.h"

#endif

namespace Nes
{
	namespace Core
	{
		namespace Zlib
		{
		#ifndef NST_NO_ZLIB

			ulong NST_CALL Compress(const byte* src,ulong srcSize,byte* dst,ulong dstSize,Compression compression)
			{
				if (srcSize && dstSize)
				{
					NST_ASSERT( src && dst );

					int result;

					if (compression == BEST_COMPRESSION)
						result = compress2( dst, &dstSize, src, srcSize, Z_BEST_COMPRESSION );
					else
						result = compress( dst, &dstSize, src, srcSize );

					if (result == Z_OK)
						return dstSize;
				}

				return 0;
			}

			ulong NST_CALL Uncompress(const byte* src,ulong srcSize,byte* dst,ulong dstSize)
			{
				if (srcSize && dstSize)
				{
					NST_ASSERT( src && dst );

					if (uncompress( dst, &dstSize, src, srcSize ) == Z_OK)
						return dstSize;
				}

				return 0;
			}

		#else

			ulong NST_CALL Compress(const byte*,ulong,byte*,ulong,Compression)
			{
				return 0;
			}

			ulong NST_CALL Uncompress(const byte*,ulong,byte*,ulong)
			{
				return 0;
			}

		#endif
		}
	}
}