Beispiel #1
0
static chd_error open_disk_diff(emu_options &options, const char *name, chd_file &source, chd_file &diff_chd)
{
	std::string fname = std::string(name).append(".dif");

	/* try to open the diff */
	//printf("Opening differencing image file: %s\n", fname.c_str());
	emu_file diff_file(options.diff_directory(), OPEN_FLAG_READ | OPEN_FLAG_WRITE);
	osd_file::error filerr = diff_file.open(fname.c_str());
	if (filerr == osd_file::error::NONE)
	{
		std::string fullpath(diff_file.fullpath());
		diff_file.close();

		//printf("Opening differencing image file: %s\n", fullpath.c_str());
		return diff_chd.open(fullpath.c_str(), true, &source);
	}

	/* didn't work; try creating it instead */
	//printf("Creating differencing image: %s\n", fname.c_str());
	diff_file.set_openflags(OPEN_FLAG_READ | OPEN_FLAG_WRITE | OPEN_FLAG_CREATE | OPEN_FLAG_CREATE_PATHS);
	filerr = diff_file.open(fname.c_str());
	if (filerr == osd_file::error::NONE)
	{
		std::string fullpath(diff_file.fullpath());
		diff_file.close();

		/* create the CHD */
		//printf("Creating differencing image file: %s\n", fupointllpath.c_str());
		chd_codec_type compression[4] = { CHD_CODEC_NONE };
		chd_error err = diff_chd.create(fullpath.c_str(), source.logical_bytes(), source.hunk_bytes(), compression, source);
		if (err != CHDERR_NONE)
			return err;

		return diff_chd.clone_all_metadata(source);
	}

	return CHDERR_FILE_NOT_FOUND;
}
Beispiel #2
0
static chd_error open_disk_diff(emu_options &options, const rom_entry *romp, chd_file &source, chd_file &diff_chd)
{
	astring fname(ROM_GETNAME(romp), ".dif");

	/* try to open the diff */
	LOG(("Opening differencing image file: %s\n", fname.cstr()));
	emu_file diff_file(options.diff_directory(), OPEN_FLAG_READ | OPEN_FLAG_WRITE);
	file_error filerr = diff_file.open(fname);
	if (filerr == FILERR_NONE)
	{
		astring fullpath(diff_file.fullpath());
		diff_file.close();

		LOG(("Opening differencing image file: %s\n", fullpath.cstr()));
		return diff_chd.open(fullpath, true, &source);
	}

	/* didn't work; try creating it instead */
	LOG(("Creating differencing image: %s\n", fname.cstr()));
	diff_file.set_openflags(OPEN_FLAG_READ | OPEN_FLAG_WRITE | OPEN_FLAG_CREATE | OPEN_FLAG_CREATE_PATHS);
	filerr = diff_file.open(fname);
	if (filerr == FILERR_NONE)
	{
		astring fullpath(diff_file.fullpath());
		diff_file.close();

		/* create the CHD */
		LOG(("Creating differencing image file: %s\n", fullpath.cstr()));
		chd_codec_type compression[4] = { CHD_CODEC_NONE };
		chd_error err = diff_chd.create(fullpath, source.logical_bytes(), source.hunk_bytes(), compression, source);
		if (err != CHDERR_NONE)
			return err;

		return diff_chd.clone_all_metadata(source);
	}

	return CHDERR_FILE_NOT_FOUND;
}