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NDSSystem: Merge NDS_LoadROM common code 

Move the path stuff that is different between platforms
to an helper in order to share the common code.

The !WINDOWS should receive a bit more love though.
This commit is contained in:
riccardom 2011-05-15 22:05:57 +00:00
parent 3c92ad957e
commit 6009d46485
1 changed files with 80 additions and 115 deletions
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195
desmume/src/NDSSystem.cpp
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@ -428,14 +428,10 @@ static void loadrom(std::string fname) {
fclose(inf);
}
int NDS_LoadROM(const char *filename, const char *logicalFilename)
static int rom_init_path(const char *filename, const char *logicalFilename)
{
int type = ROM_NDS;
char buf[MAX_PATH];
int type = ROM_NDS;
if (filename == NULL)
return -1;
path.init(logicalFilename);
if ( path.isdsgba(path.path)) {
@ -467,6 +463,83 @@ int NDS_LoadROM(const char *filename, const char *logicalFilename)
return -1;
}
return 1;
}
#else
static int rom_init_path(const char *filename, const char *logicalFilename)
{
int ret;
int type;
ROMReader_struct *reader;
void *file;
u32 size;
char *noext;
noext = strdup(filename);
reader = ROMReaderInit(&noext);
free(noext);
if (logicalFilename)
path.init(logicalFilename);
else
path.init(filename);
if (!strcasecmp(path.extension().c_str(), "zip"))
type = ROM_NDS;
else if (!strcasecmp(path.extension().c_str(), "nds"))
type = ROM_NDS;
else if (path.isdsgba(path.path))
type = ROM_DSGBA;
else
type = ROM_NDS;
file = reader->Init(filename);
if (!file)
{
reader->DeInit(file);
return -1;
}
size = reader->Size(file);
if(type == ROM_DSGBA)
{
reader->Seek(file, DSGBA_LOADER_SIZE, SEEK_SET);
size -= DSGBA_LOADER_SIZE;
}
//check that size is at least the size of the header
if (size < 352) {
reader->DeInit(file);
return -1;
}
// Make sure old ROM is freed first(at least this way we won't be eating
// up a ton of ram before the old ROM is freed)
if(MMU.CART_ROM != MMU.UNUSED_RAM)
NDS_FreeROM();
gameInfo.resize(size);
ret = reader->Read(file, gameInfo.romdata, size);
gameInfo.fillGap();
reader->DeInit(file);
return ret;
}
#endif
int NDS_LoadROM(const char *filename, const char *logicalFilename)
{
int ret;
char buf[MAX_PATH];
if (filename == NULL)
return -1;
ret = rom_init_path(filename, logicalFilename);
if (ret < 1)
return ret;
//decrypt if necessary..
//but this is untested and suspected to fail on big endian, so lets not support this on big endian
#ifndef WORDS_BIGENDIAN
@ -532,117 +605,9 @@ int NDS_LoadROM(const char *filename, const char *logicalFilename)
strcat(buf, ".dct"); // DeSmuME cheat :)
cheats->init(buf);
return 1;
}
#else
int NDS_LoadROM(const char *filename, const char *logicalFilename)
{
int ret;
int type;
ROMReader_struct *reader;
void *file;
u32 size;
char *noext;
char buf[MAX_PATH];
if (filename == NULL)
return -1;
noext = strdup(filename);
reader = ROMReaderInit(&noext);
free(noext);
if(logicalFilename) path.init(logicalFilename);
else path.init(filename);
if(!strcasecmp(path.extension().c_str(), "zip")) type = ROM_NDS;
else if ( !strcasecmp(path.extension().c_str(), "nds"))
type = ROM_NDS;
else if ( path.isdsgba(path.path))
type = ROM_DSGBA;
else
type = ROM_NDS;
file = reader->Init(filename);
if (!file)
{
reader->DeInit(file);
return -1;
}
size = reader->Size(file);
if(type == ROM_DSGBA)
{
reader->Seek(file, DSGBA_LOADER_SIZE, SEEK_SET);
size -= DSGBA_LOADER_SIZE;
}
//check that size is at least the size of the header
if (size < 352) {
reader->DeInit(file);
return -1;
}
// Make sure old ROM is freed first(at least this way we won't be eating
// up a ton of ram before the old ROM is freed)
if(MMU.CART_ROM != MMU.UNUSED_RAM)
NDS_FreeROM();
gameInfo.resize(size);
ret = reader->Read(file, gameInfo.romdata, size);
gameInfo.fillGap();
reader->DeInit(file);
//decrypt if necessary..
//but this is untested and suspected to fail on big endian, so lets not support this on big endian
#ifndef WORDS_BIGENDIAN
bool okRom = DecryptSecureArea((u8*)gameInfo.romdata,gameInfo.romsize);
if(!okRom) {
printf("Specified file is not a valid rom\n");
return -1;
}
#endif
if (cheatSearch)
cheatSearch->close();
FCEUI_StopMovie();
MMU_unsetRom();
NDS_SetROM((u8*)gameInfo.romdata, gameInfo.mask);
gameInfo.populate();
gameInfo.crc = crc32(0,(u8*)gameInfo.romdata,gameInfo.romsize);
INFO("\nROM crc: %08X\n", gameInfo.crc);
INFO("ROM serial: %s\n", gameInfo.ROMserial);
INFO("ROM internal name: %s\n\n", gameInfo.ROMname);
INFO("ROM game code: %c%c%c%c\n\n", gameInfo.header.gameCode[0], gameInfo.header.gameCode[1], gameInfo.header.gameCode[2], gameInfo.header.gameCode[3]);
//for homebrew, try auto-patching DLDI. should be benign if there is no DLDI or if it fails
bool isHomebrew = !memcmp(gameInfo.header.gameCode,"####",4);
if(isHomebrew)
DLDI::tryPatch((void*)gameInfo.romdata, gameInfo.romsize);
NDS_Reset();
memset(buf, 0, MAX_PATH);
path.getpathnoext(path.BATTERY, buf);
strcat(buf, ".dsv"); // DeSmuME memory card :)
MMU_new.backupDevice.load_rom(buf);
memset(buf, 0, MAX_PATH);
path.getpathnoext(path.CHEATS, buf);
strcat(buf, ".dct"); // DeSmuME cheat :)
cheats->init(buf);
return ret;
}
#endif
void NDS_FreeROM(void)
{
FCEUI_StopMovie();