/****************************************************************************
 * FCE Ultra 0.98.12
 * Nintendo Wii/Gamecube Port
 *
 * Tantric 2008-2009
 *
 * fceload.c
 *
 * NES Memory Load Game
 *
 * This performs the functions of LoadGame and iNESLoad from a single module
 * Helper function for GameCube injected ROMS
 ****************************************************************************/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <malloc.h>

#include "fceugx.h"
#include "gcaudio.h"
#include "fceusupport.h"
#include "pad.h"
#include "menu.h"
#include "fileop.h"
#include "filebrowser.h"

bool romLoaded = false;

#define SAMPLERATE 48000

static FCEUFILE *fceufp = NULL;
static memorystream* fceumem = NULL;

static void MakeFCEUFile(char * membuffer, int length)
{
	if(fceufp != NULL)
	{
		delete fceufp;
		fceufp = NULL;
	}

	fceumem = new memorystream(membuffer, length); // we never need to delete this...?

	fceufp = new FCEUFILE();
	fceufp->size = length;
	fceufp->stream = fceumem;
	fceufp->filename = romFilename;
}

int GCMemROM(int method, int size)
{
	ResetGameLoaded();

	//AutosaveStatus[0] = AutosaveStatus[1] = 0;
	//AutosaveStatus[2] = AutosaveStatus[3] = 0;

	CloseGame();
	GameInfo = new FCEUGI();
	memset(GameInfo, 0, sizeof(FCEUGI));

	GameInfo->filename = strdup(romFilename);
	//if(fceufp->archiveFilename != "") GameInfo->archiveFilename = strdup(fceufp->archiveFilename.c_str());
	GameInfo->archiveCount = 0;

	/*** Set some default values ***/
	GameInfo->soundchan = 1;
	GameInfo->soundrate = SAMPLERATE;
	GameInfo->name=0;
	GameInfo->type=GIT_CART;
	GameInfo->vidsys=GIV_USER;
	GameInfo->input[0]=GameInfo->input[1]=SI_UNSET;
	GameInfo->inputfc=SIFC_UNSET;
	GameInfo->cspecial=SIS_NONE;

	/*** Set internal sound information ***/
	FCEUI_Sound(SAMPLERATE);
	FCEUI_SetSoundVolume(100); // 0-100
	FCEUI_SetLowPass(0);

	MakeFCEUFile((char *) nesrom, size);

	nesGameType = 0;

	if (iNESLoad(romFilename, fceufp, 1))
		nesGameType = 1;
	else if (UNIFLoad(romFilename, fceufp))
		nesGameType = 2;
	else if (NSFLoad(fceufp))
		nesGameType = 3;
	else
	{
		// read FDS BIOS into FDSBIOS - should be 8192 bytes
		if (FDSBIOS[1] == 0)
		{
			int biosSize = 0;
			char * tmpbuffer = (char *) memalign(32, 64 * 1024);

			char filepath[1024];

			if (MakeFilePath(filepath, FILE_FDSBIOS, method))
			{
				biosSize = LoadFile(tmpbuffer, filepath, 0, method, SILENT);
			}

			if (biosSize == 8192)
			{
				memcpy(FDSBIOS, tmpbuffer, 8192);
			}
			else
			{
				if (biosSize > 0)
					ErrorPrompt("FDS BIOS file is invalid!");

				return 0; // BIOS not loaded, do not load game
			}
			free(tmpbuffer);
		}
		// load game
		if (FDSLoad(NULL, fceufp))
			nesGameType = 4;
	}

	if (nesGameType > 0)
	{
		FCEU_ResetVidSys();

		if(GameInfo->type!=GIT_NSF)
			if(FSettings.GameGenie)
				OpenGenie();
		PowerNES();

		if(GameInfo->type!=GIT_NSF)
			FCEU_LoadGamePalette();

		FCEU_ResetPalette();
		FCEU_ResetMessages();	// Save state, status messages, etc.

		if(GameInfo->type!=GIT_NSF)
			FCEU_LoadGameCheats(0);

		ResetAudio();
		romLoaded = true;
		return 1;
	}
	else
	{
		delete GameInfo;
		GameInfo = 0;

		ErrorPrompt("Invalid game file!");
		romLoaded = false;
		return 0;
	}
}