/* ScummVM - Scumm Interpreter
 * Copyright (C) 2001  Ludvig Strigeus
 * Copyright (C) 2001-2003 The ScummVM project
 *
 * This program 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.

 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Header$
 *
 */
#ifndef SCUMMSYS_H
#define SCUMMSYS_H

#include <stdlib.h>

// TODO - use config.h, generated by configure
//#include "config.h"

#if defined(USE_MAD) || defined(USE_VORBIS)
#define COMPRESSED_SOUND_FILE
#endif

#if defined(_MSC_VER)

	//#pragma warning (disable: 4244)
	//#pragma warning (disable: 4101)

	#define scumm_stricmp stricmp
	#define snprintf _snprintf

	#if defined(CHECK_HEAP)
	#undef CHECK_HEAP
	#define CHECK_HEAP checkHeap();
	#else
	#define CHECK_HEAP
	#endif

	#define SCUMM_LITTLE_ENDIAN

	#define FORCEINLINE __forceinline
	#define NORETURN _declspec(noreturn)

	typedef unsigned char byte;
	typedef unsigned char uint8;
	typedef unsigned short uint16;
	typedef unsigned long uint32;
	typedef unsigned int uint;
	typedef signed char int8;
	typedef signed short int16;
	typedef signed long int32;
	
	#define START_PACK_STRUCTS pack(push, 1)
	#define END_PACK_STRUCTS	 pack(pop)
	#define GCC_PACK

#if defined(_WIN32_WCE) && _WIN32_WCE < 300

	#define CDECL __cdecl

#endif

#elif defined(__MINGW32__)

	#define scumm_stricmp stricmp
	#define CHECK_HEAP
	#define SCUMM_LITTLE_ENDIAN

	#define FORCEINLINE inline
	#define NORETURN __attribute__((__noreturn__))
	#define GCC_PACK __attribute__((packed))
	#define _HEAPOK 0

	typedef unsigned char byte;
	typedef unsigned char uint8;
	typedef unsigned short uint16;
	typedef unsigned int uint32;
	typedef unsigned int uint;
	typedef signed char int8;
	typedef signed short int16;
	typedef signed int int32;

	#define START_PACK_STRUCTS pack (push, 1)
	#define END_PACK_STRUCTS	 pack(pop)

#elif defined(UNIX)

	#define scumm_stricmp strcasecmp

	#define CHECK_HEAP

	#ifdef X11_BACKEND

	/* You need to set those manually */
//	#define SCUMM_LITTLE_ENDIAN
	/* #define SCUMM_NEED_ALIGNMENT */
	
	#else
	/* need this for the SDL_BYTEORDER define */
	#include <SDL_byteorder.h>

	#if SDL_BYTEORDER == SDL_LIL_ENDIAN
	#define SCUMM_LITTLE_ENDIAN
	#elif SDL_BYTEORDER == SDL_BIG_ENDIAN
	#define SCUMM_BIG_ENDIAN
	#define SCUMM_NEED_ALIGNMENT
	#else
	#error Neither SDL_BIG_ENDIAN nor SDL_LITTLE_ENDIAN is set.
	#endif
	#endif

	#define FORCEINLINE inline
	#define CDECL 

	#ifndef CONFIG_H
	typedef unsigned char byte;
	typedef unsigned char uint8;
	typedef unsigned short uint16;
	typedef unsigned int uint;
	typedef unsigned int uint32;
	typedef signed char int8;
	typedef signed short int16;
	typedef signed int int32;
	#endif

	#if defined(__DECCXX) // Assume alpha architecture
	#define INVERSE_MKID
	#define SCUMM_NEED_ALIGNMENT
	#endif

	#if defined(__GNUC__)
	#define START_PACK_STRUCTS
	#define END_PACK_STRUCTS
	#define GCC_PACK __attribute__((packed))
	#define NORETURN __attribute__((__noreturn__)) 
	#else
	#define START_PACK_STRUCTS pack (1)
	#define END_PACK_STRUCTS	 pack ()
	#define GCC_PACK
	#define NORETURN
	#endif

#elif defined(macintosh)
	#include <stdio.h>

	#include "macos.h"

	#define scumm_stricmp strcmp// FIXME - this is definitly wrong. Try strcasecmp?

	#define CHECK_HEAP
	#define SCUMM_BIG_ENDIAN

	#define FORCEINLINE inline
	#define CDECL 

	typedef unsigned char byte;
	typedef unsigned char uint8;
	typedef unsigned short uint16;
	typedef unsigned long uint32;
	typedef unsigned int uint;
	typedef signed char int8;
	typedef signed short int16;
	typedef signed long int32;

	#define START_PACK_STRUCTS pack (1)
	#define END_PACK_STRUCTS	 pack ()
	#define GCC_PACK
	#define NORETURN
	#define USE_QTMUSIC
	#define NEED_STRDUP

#elif defined(__MORPHOS__)
	#define scumm_stricmp stricmp
	#define CHECK_HEAP

	#define SCUMM_BIG_ENDIAN
	#define SCUMM_NEED_ALIGNMENT

	#define FORCEINLINE inline
	#define CDECL

	typedef unsigned char byte;
	typedef unsigned char uint8;
	typedef unsigned short uint16;
	typedef unsigned long uint32;
	typedef unsigned int uint;
	typedef signed char int8;
	typedef signed short int16;
	typedef signed long int32;

	#if defined(__GNUC__)
		#define START_PACK_STRUCTS
		#define END_PACK_STRUCTS
		#define GCC_PACK __attribute__((packed))
		#define NORETURN __attribute__((__noreturn__))
	#else
		#define START_PACK_STRUCTS pack (1)
		#define END_PACK_STRUCTS	 pack ()
		#define GCC_PACK
		#define NORETURN
	#endif
	#define main morphos_main

#elif defined(__DC__)

	#define scumm_stricmp strcasecmp
	#define CHECK_HEAP
	#define SCUMM_LITTLE_ENDIAN
	#define SCUMM_NEED_ALIGNMENT

	#define FORCEINLINE inline
	#define NORETURN __attribute__((__noreturn__))
	#define GCC_PACK __attribute__((packed))
	#define CDECL

	typedef unsigned char byte;
	typedef unsigned char uint8;
	typedef unsigned short uint16;
	typedef unsigned long uint32;
	typedef unsigned int uint;
	typedef signed char int8;
	typedef signed short int16;
	typedef signed long int32;

	#define START_PACK_STRUCTS pack (push, 1)
	#define END_PACK_STRUCTS	 pack(pop)

#elif defined __GP32__ //ph0x
	#define CDECL 
	#define SCUMM_NEED_ALIGNMENT
	#define SCUMM_LITTLE_ENDIAN 

	#define scumm_stricmp stricmp
	#define CHECK_HEAP

	#define FORCEINLINE inline
	#define NORETURN __attribute__((__noreturn__))
	#define GCC_PACK __attribute__((packed))
	#define _HEAPOK 0

	typedef unsigned char byte;
	typedef unsigned char uint8;
	typedef unsigned short uint16;
	typedef unsigned long uint32;
	typedef unsigned int uint;
	typedef signed char int8;
	typedef signed short int16;
	typedef signed long int32;

	#define START_PACK_STRUCTS pack (push, 1)
	#define END_PACK_STRUCTS	 pack(pop)
#else
	#error No system type defined
#endif

#define SWAP_BYTES(a) ((((a) >> 24) & 0xFF) | (((a) >> 8) & 0xFF00) | \
									(((a) << 8) & 0xFF0000) | (((a) << 24) & 0xFF000000))

#if defined(SCUMM_LITTLE_ENDIAN)

	#define PROTO_MKID(a) SWAP_BYTES(a)
	#define PROTO_MKID_BE(a) (a & 0xffffffff)

	#if defined(INVERSE_MKID)
	#  define MKID(a) PROTO_MKID_BE(a)
	#  define MKID_BE(a) PROTO_MKID(a)
	#else
	#  define MKID(a) PROTO_MKID(a)
	#  define MKID_BE(a) PROTO_MKID_BE(a)
	#endif

	#if defined(SCUMM_NEED_ALIGNMENT)
		FORCEINLINE uint READ_LE_UINT16(void *ptr) {
			return (((byte *)ptr)[1] << 8)|((byte *)ptr)[0];
		}
	#else
		FORCEINLINE uint READ_LE_UINT16(void *ptr) {
			return *(uint16 *)(ptr);
		}
	#endif

	FORCEINLINE uint READ_BE_UINT16(void *ptr) {
		return (((byte *)ptr)[0] << 8)|((byte *)ptr)[1];
	}

	#if defined(SCUMM_NEED_ALIGNMENT)
		FORCEINLINE uint32 READ_LE_UINT32(void *ptr) {
			byte *b = (byte *)ptr;
			return (b[3] << 24) + (b[2] <<16) + (b[1] << 8) + (b[0]);
		}
	#else
		FORCEINLINE uint32 READ_LE_UINT32(void *ptr) {
			return *(uint32 *)(ptr);
		}
	#endif
	
	FORCEINLINE uint32 READ_BE_UINT32(void *ptr) {
		byte *b = (byte *)ptr;
		return (b[0] << 24) + (b[1] << 16) + (b[2] << 8) + (b[3]);
	}

	#define READ_BE_UINT32_UNALIGNED READ_BE_UINT32
	#define READ_BE_UINT16_UNALIGNED READ_BE_UINT16

	#define READ_UINT32_UNALIGNED(a) READ_LE_UINT32(a)

	#define FROM_LE_32(__a__) __a__
	#define FROM_LE_16(__a__) __a__

	#define TO_LE_32(__a__) __a__
	#define TO_LE_16(__a__) __a__

	#define TO_BE_32(a) SWAP_BYTES(a)

	uint16 FORCEINLINE TO_BE_16(uint16 a) { return (a >> 8) | (a << 8); }

#elif defined(SCUMM_BIG_ENDIAN)

	#define MKID(a) (a)
	#define MKID_BE(a) (a)
	//#define MKID_BE(a) SWAP_BYTES(a)

	uint32 FORCEINLINE FROM_LE_32(uint32 a) {
		return ((a >> 24) & 0xFF) + ((a >> 8) & 0xFF00) + (( a<< 8) & 0xFF0000) \
						+ ((a<<24)&0xFF000000);
	}

	uint16 FORCEINLINE FROM_LE_16(uint16 a) {
		return ((a >> 8) & 0xFF) + ((a << 8) & 0xFF00);
	}

	#define TO_LE_32 FROM_LE_32
	#define TO_LE_16 FROM_LE_16

	uint32 FORCEINLINE READ_LE_UINT32(void *ptr) {
		byte *b = (byte *)ptr;
		return (b[3] << 24) + (b[2] << 16) + (b[1] << 8) + (b[0]);
	}

	uint32 FORCEINLINE READ_BE_UINT32(void *ptr) {
		return *(uint32 *)(ptr);
	}

	uint FORCEINLINE READ_LE_UINT16(void *ptr) {
		byte *b = (byte *)ptr;
		return (b[1] << 8) + b[0];
	}

	uint FORCEINLINE READ_BE_UINT16(void *ptr) {
		return *(uint16 *)(ptr);
	}

	uint FORCEINLINE READ_BE_UINT16_UNALIGNED(void *ptr) {
		return (((byte *)ptr)[0] << 8)|((byte *)ptr)[1];
	}

	uint32 FORCEINLINE READ_BE_UINT32_UNALIGNED(void *ptr) {
		byte *b = (byte*)ptr;
		return (b[0] << 24) + (b[1] << 16) + (b[2] << 8) + (b[3]);
	}

	#define READ_UINT32_UNALIGNED READ_BE_UINT32_UNALIGNED

	#define TO_BE_32(a) (a)
	#define TO_BE_16(a) (a)

#else

	#error No endianness defined

#endif

/* Initialized operator new */
// FIXME - get rid of these new/delete overrides!!! They conflict with the
// Standard C++ library, and they are only there to support lazy programmers anyway.
void * operator new(size_t size);
void operator delete(void *ptr);

#endif