void BackupDevice::ensure(u32 addr, u8 val, EMUFILE_FILE *fpOut)
{
if (!fpOut && (addr < fsize)) return;
EMUFILE_FILE *fp = fpOut?fpOut:fpMC;
#ifndef _DONT_SAVE_BACKUP
fp->fseek(fsize, SEEK_SET);
#endif
u32 padSize = pad_up_size(addr);
u32 size = padSize - fsize;
info.padSize = info.size = fsize = padSize;
int type = searchFileSaveType(fsize);
if (type != 0xFF) info.type = (type + 1);
#ifndef _DONT_SAVE_BACKUP
if (size > 0)
{
u8 *tmp = new u8[size];
memset(tmp, val, size);
fwrite(tmp, 1, size, fp->get_fp());
delete [] tmp;
}
//this is just for humans to read
fp->fprintf(DESMUME_BACKUP_FOOTER_TXT);
//and now the actual footer
fp->write32le(addr); //the size of data that has actually been written
fp->write32le(padSize); //the size we padded it to
fp->write32le(info.type); //save memory type
fp->write32le(addr_size);
fp->write32le(info.size); //save memory size
fp->write32le((u32)0); //version number
fp->fprintf("%s", kDesmumeSaveCookie); //this is what we'll use to recognize the desmume format save
fp->fflush();
//this is a HORRIBLE IDEA.
//leave the FP positioned to write the final byte
//this is a HACK to make the basic read/write byte operation work when it calls ensure().
//IDEALLY, no assumptions about the file pointer can be made.
//but someone (actually, not really) so very carefully profiled the save IO code and discovered that not fseeking for every byte read/write was a great optimization.
//so, now all this code is depending/assuming on the FP being kept in a precise position, and I dont think its smart to change the main user of this assumption to paper over this bug by making it fseek before read/write, while leaving other unknown assuming clients intact
fpMC->fseek(addr-1, SEEK_SET);
#endif
}
void BackupDevice::ensure(u32 addr, u8 val, EMUFILE_FILE *fpOut)
{
if (!fpOut && (addr < fsize)) return;
EMUFILE_FILE *fp = fpOut?fpOut:fpMC;
#ifndef _DONT_SAVE_BACKUP
fp->fseek(fsize, SEEK_SET);
#endif
u32 padSize = pad_up_size(addr);
u32 size = padSize - fsize;
info.padSize = info.size = fsize = padSize;
int type = searchFileSaveType(fsize);
if (type != 0xFF) info.type = (type + 1);
#ifndef _DONT_SAVE_BACKUP
if (size > 0)
{
u8 *tmp = new u8[size];
memset(tmp, val, size);
fwrite(tmp, 1, size, fp->get_fp());
delete [] tmp;
}
//this is just for humans to read
fp->fprintf(DESMUME_BACKUP_FOOTER_TXT);
//and now the actual footer
fp->write32le(addr); //the size of data that has actually been written
fp->write32le(padSize); //the size we padded it to
fp->write32le(info.type); //save memory type
fp->write32le(addr_size);
fp->write32le(info.size); //save memory size
fp->write32le((u32)0); //version number
fp->fprintf("%s", kDesmumeSaveCookie); //this is what we'll use to recognize the desmume format save
fp->fflush();
fp->fseek(addr, SEEK_SET);
#endif
}
FCEUFILE * FCEU_fopen(const char *path, const char *ipsfn, char *mode, char *ext, int index, const char** extensions)
{
FILE *ipsfile=0;
FCEUFILE *fceufp=0;
bool read = (std::string)mode == "rb";
bool write = (std::string)mode == "wb";
if((read&&write) || (!read&&!write))
{
FCEU_PrintError("invalid file open mode specified (only wb and rb are supported)");
return 0;
}
std::string archive,fname,fileToOpen;
FCEU_SplitArchiveFilename(path,archive,fname,fileToOpen);
//try to setup the ips file
if(ipsfn && read)
ipsfile=FCEUD_UTF8fopen(ipsfn,"rb");
if(read)
{
ArchiveScanRecord asr = FCEUD_ScanArchive(fileToOpen);
asr.files.FilterByExtension(extensions);
if(!asr.isArchive())
{
//if the archive contained no files, try to open it the old fashioned way
EMUFILE_FILE* fp = FCEUD_UTF8_fstream(fileToOpen,mode);
if(!fp || (fp->get_fp() == NULL))
{
return 0;
}
//try to read a zip file
{
fceufp = TryUnzip(fileToOpen);
if(fceufp) {
delete fp;
fceufp->filename = fileToOpen;
fceufp->logicalPath = fileToOpen;
fceufp->fullFilename = fileToOpen;
fceufp->archiveIndex = -1;
goto applyips;
}
}
//try to read a gzipped file
{
uint32 magic;
magic = fp->fgetc();
magic|=fp->fgetc()<<8;
magic|=fp->fgetc()<<16;
fp->fseek(0,SEEK_SET);
if(magic==0x088b1f) {
// maybe gzip...
void* gzfile = gzopen(fileToOpen.c_str(),"rb");
if(gzfile) {
delete fp;
int size;
for(size=0; gzgetc(gzfile) != EOF; size++) {}
EMUFILE_MEMORY* ms = new EMUFILE_MEMORY(size);
gzseek(gzfile,0,SEEK_SET);
gzread(gzfile,ms->buf(),size);
gzclose(gzfile);
fceufp = new FCEUFILE();
fceufp->filename = fileToOpen;
fceufp->logicalPath = fileToOpen;
fceufp->fullFilename = fileToOpen;
fceufp->archiveIndex = -1;
fceufp->stream = ms;
fceufp->size = size;
goto applyips;
}
}
}
//open a plain old file
fceufp = new FCEUFILE();
fceufp->filename = fileToOpen;
fceufp->logicalPath = fileToOpen;
fceufp->fullFilename = fileToOpen;
fceufp->archiveIndex = -1;
fceufp->stream = fp;
FCEU_fseek(fceufp,0,SEEK_END);
fceufp->size = FCEU_ftell(fceufp);
FCEU_fseek(fceufp,0,SEEK_SET);
goto applyips;
}
else
{
//open an archive file
if(archive == "")
if(index != -1)
fceufp = FCEUD_OpenArchiveIndex(asr, fileToOpen, index);
else
fceufp = FCEUD_OpenArchive(asr, fileToOpen, 0);
else
fceufp = FCEUD_OpenArchive(asr, archive, &fname);
if(!fceufp) return 0;
FileBaseInfo fbi = DetermineFileBase(fileToOpen);
fceufp->logicalPath = fbi.filebasedirectory + fceufp->filename;
goto applyips;
}
applyips:
//try to open the ips file
if(!ipsfile && !ipsfn)
ipsfile=FCEUD_UTF8fopen(FCEU_MakeIpsFilename(DetermineFileBase(fceufp->logicalPath.c_str())),"rb");
ApplyIPS(ipsfile,fceufp);
return fceufp;
}
return 0;
}
BackupDevice::BackupDevice()
{
size_t elements_read, elements_written;
fpMC = NULL;
fsize = 0;
addr_size = 0;
isMovieMode = false;
//default for most games; will be altered where appropriate
//usually 0xFF, but occasionally others. If these exceptions could be related to a particular backup memory type, that would be helpful.
//at first we assumed it would be 0x00, but baby pals proved that it should be 0xFF:
// the game reads its initial sound volumes from uninitialized data, and if it is 0, the game will be silent
// if it is 0xFF then the game starts with its sound and music at max, as presumably it is supposed to.
// so in r3303 we finally changed it (no$ appears definitely to initialize to 0xFF)
uninitializedValue = 0xFF;
if (gameInfo.romsize == 0) return;
char buf[MAX_PATH] = {0};
memset(buf, 0, MAX_PATH);
path.getpathnoext(path.BATTERY, buf);
filename = std::string(buf) + ".dsv";
MCLOG("MC: %s\n", filename.c_str());
bool fexists = (access(filename.c_str(), 0) == 0)?true:false;
if (fexists && CommonSettings.backupSave)
{
std::string tmp_fsav = std::string(buf) + ".dsv.bak";
EMUFILE_FILE *in = new EMUFILE_FILE(filename, "rb");
if (!in->fail())
{
u32 sz = in->size();
if (sz > 0)
{
EMUFILE_FILE *out = new EMUFILE_FILE(tmp_fsav, "wb");
if (!out->fail())
{
u8 *data = new u8[sz];
elements_read = fread(data, 1, sz, in->get_fp());
elements_written = fwrite(data, 1, sz, out->get_fp());
if (elements_read != sz || elements_written != sz)
printf("Possibly incomplete data read/write.\n");
delete [] data;
}
delete out;
}
}
delete in;
}
if (!fexists)
{
printf("DeSmuME .dsv save file not found. Trying to load an old raw .sav file.\n");
std::string tmp_fsav = std::string(buf) + ".sav";
EMUFILE_FILE *fpTmp = new EMUFILE_FILE(tmp_fsav, "rb");
if (!fpTmp->fail())
{
u32 sz = fpTmp->size();
if (sz > 0)
{
EMUFILE_FILE *fpOut = new EMUFILE_FILE(filename, "wb");
if (!fpOut->fail())
{
u8 *buf = new u8[sz + 1];
if ((buf) && (fread(buf, 1, sz, fpTmp->get_fp()) == sz))
{
if (no_gba_unpack(buf, sz))
printf("Converted from no$gba save.\n");
else
sz = trim(buf, sz);
if (fwrite(buf, 1, sz, fpOut->get_fp()) == sz)
{
u8 res = searchFileSaveType(sz);
if (res != 0xFF)
{
info.type = (res + 1);
addr_size = info.addr_size = save_types[info.type].addr_size;
info.size = fsize = sz;
ensure(sz, fpOut);
fsize = 0;
}
else
info.type = 0;
fexists = true;
}
}
delete [] buf;
}
delete fpOut;
}
}
delete fpTmp;
}
fpMC = new EMUFILE_FILE(filename, fexists?"rb+":"wb+");
if (!fpMC->fail())
{
fsize = fpMC->size();
if (fsize < saveSizes[0])
fpMC->truncate(0);
if (readFooter() == 0)
fsize -= (strlen(kDesmumeSaveCookie) + strlen(DESMUME_BACKUP_FOOTER_TXT) + 24);
else
{
memset(&info, 0, sizeof(info));
fsize = 0;
}
fpMC->fseek(0, SEEK_SET);
u32 left = 0;
if (CommonSettings.autodetectBackupMethod == 1)
{
if (advsc.isLoaded())
{
info.type = advsc.getSaveType();
if (info.type != 0xFF && info.type != 0xFE)
{
info.type++;
u32 adv_size = save_types[info.type].size;
if (info.size > adv_size)
{
info.size = adv_size;
fpMC->truncate(adv_size);
ensure(adv_size, fpMC);
}
else
if (info.size < adv_size)
{
left = adv_size - info.size;
info.size = adv_size;
ensure(adv_size);
}
fsize = adv_size;
}
}
}
addr_size = info.addr_size;
info.padSize = fsize;
//none of the other fields are used right now
if (CommonSettings.autodetectBackupMethod != 1 && info.type == 0)
{
info.type = searchFileSaveType(info.size);
if (info.type == 0xFF) info.type = 0;
}
u32 ss = (info.padSize * 8) / 1024;
bool _Mbit = false;
if (ss >= 1024)
{
ss /= 1024;
_Mbit = true;
}
if (ss > 0)
printf("Backup size: %u %cbit\n", ss, _Mbit?'M':'K');
}
state = (fsize > 0)?RUNNING:DETECTING;
reset();
}
FCEUFILE * FCEU_fopen(const char *path, const char *ipsfn, const char * mode, const char *ext, int index, const char** extensions)
{
FILE *ipsfile=0;
FCEUFILE *fceufp=0;
bool read = (std::string)mode == "rb";
bool write = (std::string)mode == "wb";
if((read&&write) || (!read&&!write))
{
FCEU_PrintError("invalid file open mode specified (only wb and rb are supported)");
return 0;
}
std::string archive,fname,fileToOpen;
FCEU_SplitArchiveFilename(path,archive,fname,fileToOpen);
//try to setup the ips file
if(ipsfn && read)
ipsfile=fopen(ipsfn,"rb");
if(read)
{
ArchiveScanRecord asr = FCEUD_ScanArchive(fileToOpen);
asr.files.FilterByExtension(extensions);
if(!asr.isArchive())
{
//if the archive contained no files, try to open it the old fashioned way
EMUFILE_FILE* fp = new EMUFILE_FILE(fileToOpen,mode);
if(!fp || (fp->get_fp() == NULL))
{
return 0;
}
//open a plain old file
fceufp = new FCEUFILE();
fceufp->filename = fileToOpen;
fceufp->logicalPath = fileToOpen;
fceufp->fullFilename = fileToOpen;
fceufp->archiveIndex = -1;
fceufp->stream = fp;
FCEU_fseek(fceufp,0,SEEK_END);
fceufp->size = fceufp->stream->ftell();
FCEU_fseek(fceufp,0,SEEK_SET);
goto applyips;
}
else
{
//open an archive file
if(archive == "")
if(index != -1)
fceufp = FCEUD_OpenArchiveIndex(asr, fileToOpen, index);
else
fceufp = FCEUD_OpenArchive(asr, fileToOpen, 0);
else
fceufp = FCEUD_OpenArchive(asr, archive, &fname);
if(!fceufp) return 0;
FileBaseInfo fbi = DetermineFileBase(fileToOpen.c_str());
fceufp->logicalPath = fbi.filebasedirectory + fceufp->filename;
goto applyips;
}
applyips:
return fceufp;
}
return 0;
}
BackupDevice::BackupDevice()
{
fpMC = NULL;
fsize = 0;
addr_size = 0;
isMovieMode = false;
if (gameInfo.romsize == 0) return;
char buf[MAX_PATH] = {0};
memset(buf, 0, MAX_PATH);
path.getpathnoext(path.BATTERY, buf);
filename = std::string(buf) + ".dsv"; // DeSmuME memory card
MCLOG("MC: %s\n", filename.c_str());
bool fexists = (access(filename.c_str(), 0) == 0)?true:false;
if (fexists && CommonSettings.backupSave)
{
std::string tmp_fsav = std::string(buf) + ".dsv.bak";
EMUFILE_FILE *in = new EMUFILE_FILE(filename, "rb");
if (!in->fail())
{
u32 sz = in->size();
if (sz > 0)
{
EMUFILE_FILE *out = new EMUFILE_FILE(tmp_fsav, "wb");
if (!out->fail())
{
u8 *data = new u8[sz];
fread(data, 1, sz, in->get_fp());
fwrite(data, 1, sz, out->get_fp());
delete [] data;
}
delete out;
}
}
delete in;
}
if (!fexists)
{
printf("DeSmuME .dsv save file not found. Trying to load an old raw .sav file.\n");
std::string tmp_fsav = std::string(buf) + ".sav";
EMUFILE_FILE *fpTmp = new EMUFILE_FILE(tmp_fsav, "rb");
if (!fpTmp->fail())
{
u32 sz = fpTmp->size();
if (sz > 0)
{
EMUFILE_FILE *fpOut = new EMUFILE_FILE(filename, "wb");
if (!fpOut->fail())
{
u8 *buf = new u8[sz + 1];
if ((buf) && (fread(buf, 1, sz, fpTmp->get_fp()) == sz))
{
if (no_gba_unpack(buf, sz))
printf("Converted from no$gba save.\n");
else
sz = trim(buf, sz);
if (fwrite(buf, 1, sz, fpOut->get_fp()) == sz)
{
u8 res = searchFileSaveType(sz);
if (res != 0xFF)
{
info.type = (res + 1);
addr_size = info.addr_size = save_types[info.type].addr_size;
info.size = fsize = sz;
ensure(sz, fpOut);
fsize = 0;
}
else
info.type = 0;
fexists = true;
}
}
delete [] buf;
}
delete fpOut;
}
}
delete fpTmp;
}
fpMC = new EMUFILE_FILE(filename, fexists?"rb+":"wb+");
if (!fpMC->fail())
{
fsize = fpMC->size();
if (fsize < saveSizes[0])
fpMC->truncate(0);
if (readFooter() == 0)
fsize -= (strlen(kDesmumeSaveCookie) + strlen(DESMUME_BACKUP_FOOTER_TXT) + 24);
else
{
memset(&info, 0, sizeof(info));
fsize = 0;
}
fpMC->fseek(0, SEEK_SET);
u32 left = 0;
if (CommonSettings.autodetectBackupMethod == 1)
{
if (advsc.isLoaded())
{
info.type = advsc.getSaveType();
if (info.type != 0xFF && info.type != 0xFE)
{
info.type++;
u32 adv_size = save_types[info.type].size;
if (info.size > adv_size)
{
info.size = adv_size;
fpMC->truncate(adv_size);
ensure(adv_size, fpMC);
}
else
if (info.size < adv_size)
{
left = adv_size - info.size;
info.size = adv_size;
ensure(adv_size);
}
fsize = adv_size;
}
}
}
addr_size = info.addr_size;
info.padSize = fsize;
//none of the other fields are used right now
if (CommonSettings.autodetectBackupMethod != 1 && info.type == 0)
{
info.type = searchFileSaveType(info.size);
if (info.type == 0xFF) info.type = 0;
}
u32 ss = (info.padSize * 8) / 1024;
bool _Mbit = false;
if (ss >= 1024)
{
ss /= 1024;
_Mbit = true;
}
if (ss > 0)
printf("Backup size: %u %cbit\n", ss, _Mbit?'M':'K');
}
state = (fsize > 0)?RUNNING:DETECTING;
reset();
}