// Load a rom and separate out the bytes by nGap
// Dest is the memory block to insert the rom into
static int LoadRom(unsigned char *Dest,int i,int nGap,int bXor)
{
int nRet=0,nLen=0;
if (BurnExtLoadRom==NULL) return 1; // Load function was not defined by the application
// Find the length of the rom (as given by the current driver)
{
struct BurnRomInfo ri;
ri.nType=0;
ri.nLen=0;
BurnDrvGetRomInfo(&ri,i);
if (ri.nType==0) return 0; // Empty rom slot - don't load anything and return success
nLen=ri.nLen;
}
if (nLen<=0) return 1;
if (nGap>1 || bXor)
{
unsigned char *Load=NULL;
unsigned char *pd=NULL,*pl=NULL,*LoadEnd=NULL;
int nLoadLen=0;
// Allocate space for the file
Load=(unsigned char *)malloc(nLen);
if (Load==NULL) return 1;
memset(Load,0,nLen);
// Load in the file
nRet=BurnExtLoadRom(Load,&nLoadLen,i);
if (nRet!=0) { free(Load); return 1; }
if (nLoadLen<0) nLoadLen=0;
if (nLoadLen>nLen) nLoadLen=nLen;
// Loaded rom okay. Now insert into Dest
LoadEnd=Load+nLoadLen;
pd=Dest; pl=Load;
// Quickly copy in the bytes with a gap of 'nGap' between each byte
if (bXor)
{
do { *pd ^= *pl++; pd+=nGap; } while (pl<LoadEnd);
}
else
{
do { *pd = *pl++; pd+=nGap; } while (pl<LoadEnd);
}
free(Load);
}
else
{
// If no XOR, and gap of 1, just copy straight in
nRet=BurnExtLoadRom(Dest,NULL,i);
if (nRet!=0) return 1;
}
return 0;
}
// Catch calls to BurnLoadRom() once the emulation has started;
// Intialise the zip module before forwarding the call, and exit cleanly.
static int DrvLoadRom(unsigned char* Dest, int* pnWrote, int i)
{
int nRet;
BzipOpen(false);
if ((nRet = BurnExtLoadRom(Dest, pnWrote, i)) != 0) {
char szText[256] = "";
char* pszFilename;
BurnDrvGetRomName(&pszFilename, i, 0);
sprintf(szText,
"Error loading %s, requested by %s.\n"
"The emulation will likely suffer problems.",
pszFilename, BurnDrvGetTextA(0));
}
BzipClose();
BurnExtLoadRom = DrvLoadRom;
//ScrnTitle();
return nRet;
}
// Catch calls to BurnLoadRom() once the emulation has started;
// Intialise the zip module before forwarding the call, and exit cleanly.
static int __cdecl DrvLoadRom(unsigned char* Dest, int* pnWrote, int i)
{
int nRet;
BzipOpen(false);
if ((nRet = BurnExtLoadRom(Dest, pnWrote, i)) != 0) {
char* pszFilename;
BurnDrvGetRomName(&pszFilename, i, 0);
}
BzipClose();
return nRet;
}
// Catch calls to BurnLoadRom() once the emulation has started;
// Intialise the zip module before forwarding the call, and exit cleanly.
static int __cdecl DrvLoadRom(unsigned char* Dest, int* pnWrote, int i)
{
int nRet;
BzipOpen(false);
if ((nRet = BurnExtLoadRom(Dest, pnWrote, i)) != 0) {
char* pszFilename;
BurnDrvGetRomName(&pszFilename, i, 0);
FBAPopupAddText(PUF_TEXT_DEFAULT, MAKEINTRESOURCE(IDS_ERR_LOAD_REQUEST), pszFilename, BurnDrvGetText(DRV_NAME));
FBAPopupDisplay(PUF_TYPE_ERROR);
}
BzipClose();
BurnExtLoadRom = DrvLoadRom;
ScrnTitle();
return nRet;
}
// Load a rom and separate out the bytes by nGap
// Dest is the memory block to insert the rom into
static INT32 LoadRom(UINT8 *Dest, INT32 i, INT32 nGap, INT32 bXor)
{
INT32 nRet = 0, nLen = 0;
if (BurnExtLoadRom == NULL) return 1; // Load function was not defined by the application
// Find the length of the rom (as given by the current driver)
{
struct BurnRomInfo ri;
ri.nType=0;
ri.nLen=0;
BurnDrvGetRomInfo(&ri,i);
if (ri.nType==0) return 0; // Empty rom slot - don't load anything and return success
nLen=ri.nLen;
}
char* RomName = ""; //add by emufan
BurnDrvGetRomName(&RomName, i, 0);
if (nLen<=0) return 1;
if (nGap>1 || bXor)
{
UINT8 *Load=NULL;
UINT8 *pd=NULL,*pl=NULL,*LoadEnd=NULL;
INT32 nLoadLen=0;
// Allocate space for the file
Load=(UINT8 *)malloc(nLen);
if (Load==NULL) return 1;
memset(Load,0,nLen);
// Load in the file
nRet=BurnExtLoadRom(Load,&nLoadLen,i);
//if (bDoIpsPatch) IpsApplyPatches(Load, RomName);
if (nRet!=0) { if (Load) { free(Load); Load = NULL; } return 1; }
if (nLoadLen<0) nLoadLen=0;
if (nLoadLen>nLen) nLoadLen=nLen;
// Loaded rom okay. Now insert into Dest
LoadEnd=Load+nLoadLen;
pd=Dest; pl=Load;
// Quickly copy in the bytes with a gap of 'nGap' between each byte
if (bXor)
{
do { *pd ^= *pl++; pd+=nGap; } while (pl<LoadEnd);
}
else
{
do { *pd = *pl++; pd+=nGap; } while (pl<LoadEnd);
}
if (Load) {
free(Load);
Load = NULL;
}
}
else
{
// If no XOR, and gap of 1, just copy straight in
nRet=BurnExtLoadRom(Dest,NULL,i);
//if (bDoIpsPatch) IpsApplyPatches(Dest, RomName);
if (nRet!=0) return 1;
}
return 0;
}
