bool BackupDevice::export_no_gba(const char* fname)
{
std::vector<u8> data(fsize);
u32 pos = fpMC->ftell();
fpMC->fseek(0, SEEK_SET);
fread((char*)&data[0], 1, fsize, fpMC->get_fp());
fpMC->fseek(pos, SEEK_SET);
FILE* outf = fopen(fname,"wb");
if(!outf) return false;
u32 size = data.size();
u32 padSize = pad_up_size(size);
if(data.size()>0)
fwrite(&data[0],1,size,outf);
for(u32 i=size;i<padSize;i++)
fputc(0xFF,outf);
if (padSize < 512 * 1024)
{
for(u32 i=padSize; i<512 * 1024; i++)
fputc(0xFF,outf);
}
fclose(outf);
return true;
}
//======================================================================= end
//=======================================================================
//======================================================================= no$GBA
bool BackupDevice::export_raw(const char* filename)
{
size_t elements_read;
std::vector<u8> data(fsize);
u32 pos = fpMC->ftell();
fpMC->fseek(0, SEEK_SET);
elements_read = fread(&data[0], 1, fsize, fpMC->get_fp());
if (elements_read != fsize)
printf(
"Expected %u bytes from saved state but read %lu.\n",
fsize,
elements_read
);
fpMC->fseek(pos, SEEK_SET);
FILE* outf = fopen(filename,"wb");
if(!outf) return false;
u32 size = data.size();
u32 padSize = pad_up_size(size);
if(data.size()>0)
fwrite(&data[0],1,size,outf);
for(u32 i=size;i<padSize;i++)
fputc(uninitializedValue,outf);
fclose(outf);
return true;
}
bool BackupDevice::save_raw(const char* filename)
{
FILE* outf = fopen(filename,"wb");
if(!outf) return false;
u32 size = data.size();
u32 padSize = pad_up_size(size);
if(data.size()>0)
fwrite(&data[0],1,size,outf);
for(u32 i=size;i<padSize;i++)
fputc(kUninitializedSaveDataValue,outf);
fclose(outf);
return true;
}
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
}
bool BackupDevice::save_no_gba(const char* fname)
{
FILE* outf = fopen(fname,"wb");
if(!outf) return false;
u32 size = data.size();
u32 padSize = pad_up_size(size);
if(data.size()>0)
fwrite(&data[0],1,size,outf);
for(u32 i=size;i<padSize;i++)
fputc(0xFF,outf);
if (padSize < 512 * 1024)
{
for(u32 i=padSize; i<512 * 1024; i++)
fputc(0xFF,outf);
}
fclose(outf);
return true;
}
void BackupDevice::flush()
{
//never use save files if we are in movie mode
if(isMovieMode) return;
if (filename.length() == 0) return;
EMUFILE* outf = new EMUFILE_FILE(filename.c_str(),"wb");
if(!outf->fail())
{
if(data.size()>0)
outf->fwrite(&data[0],data.size());
//write the footer. we use a footer so that we can maximize the chance of the
//save file being recognized as a raw save file by other emulators etc.
//first, pad up to the next largest known save size.
u32 size = data.size();
u32 padSize = pad_up_size(size);
for(u32 i=size;i<padSize;i++)
outf->fputc(kUninitializedSaveDataValue);
//this is just for humans to read
outf->fprintf("|<--Snip above here to create a raw sav by excluding this DeSmuME savedata footer:");
//and now the actual footer
write32le(size,outf); //the size of data that has actually been written
write32le(padSize,outf); //the size we padded it to
write32le(info.type,outf); //save memory type
write32le(addr_size,outf);
write32le(info.size,outf); //save memory size
write32le(0,outf); //version number
outf->fprintf("%s", kDesmumeSaveCookie); //this is what we'll use to recognize the desmume format save
delete outf;
}
else
{
delete outf;
printf("Unable to open savefile %s\n", filename.c_str());
}
}
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
}
//======================================================================= end
//=======================================================================
//======================================================================= no$GBA
bool BackupDevice::export_raw(const char* filename)
{
std::vector<u8> data(fsize);
u32 pos = fpMC->ftell();
fpMC->fseek(0, SEEK_SET);
fread((char*)&data[0], 1, fsize, fpMC->get_fp());
fpMC->fseek(pos, SEEK_SET);
FILE* outf = fopen(filename,"wb");
if(!outf) return false;
u32 size = data.size();
u32 padSize = pad_up_size(size);
if(data.size()>0)
fwrite(&data[0],1,size,outf);
for(u32 i=size;i<padSize;i++)
fputc(kUninitializedSaveDataValue,outf);
fclose(outf);
return true;
}
