C++ rom_first_region函数代码示例

int audit_images(int game, UINT32 validation, audit_record **audit)
{
	const game_driver *gamedrv = drivers[game];
	const rom_entry *region, *rom;
	audit_record *record;
	int foundany = FALSE;
	int allshared = TRUE;
	int records;

	/* determine the number of records we will generate */
	records = 0;
	for (region = rom_first_region(gamedrv); region != NULL; region = rom_next_region(region))
		for (rom = rom_first_file(region); rom != NULL; rom = rom_next_file(rom))
			if (ROMREGION_ISROMDATA(region) || ROMREGION_ISDISKDATA(region))
			{
				if (allshared && !rom_used_by_parent(gamedrv, rom, NULL))
					allshared = FALSE;
				records++;
			}

	if (records > 0)
	{
		/* allocate memory for the records */
		*audit = malloc_or_die(sizeof(**audit) * records);
		memset(*audit, 0, sizeof(**audit) * records);
		record = *audit;

		/* iterate over regions and ROMs */
		for (region = rom_first_region(drivers[game]); region; region = rom_next_region(region))
			for (rom = rom_first_file(region); rom; rom = rom_next_file(rom))
			{
				int shared = rom_used_by_parent(gamedrv, rom, NULL);

				/* audit a file */
				if (ROMREGION_ISROMDATA(region))
				{
					if (audit_one_rom(rom, gamedrv, validation, record++) && (!shared || allshared))
						foundany = TRUE;
				}

				/* audit a disk */
				else if (ROMREGION_ISDISKDATA(region))
				{
					if (audit_one_disk(rom, gamedrv, validation, record++) && (!shared || allshared))
						foundany = TRUE;
				}
			}

		/* if we found nothing, we don't have the set at all */
		if (!foundany)
		{
			free(*audit);
			*audit = NULL;
			records = 0;
		}
	}
	return records;
}

static void process_region_list(romload_private *romdata)
{
	astring regiontag;

	/* loop until we hit the end */
	device_iterator deviter(romdata->machine().root_device());
	for (device_t *device = deviter.first(); device != NULL; device = deviter.next())
		for (const rom_entry *region = rom_first_region(*device); region != NULL; region = rom_next_region(region))
		{
			UINT32 regionlength = ROMREGION_GETLENGTH(region);

			rom_region_name(regiontag, *device, region);
			LOG(("Processing region \"%s\" (length=%X)\n", regiontag.cstr(), regionlength));

			/* the first entry must be a region */
			assert(ROMENTRY_ISREGION(region));

			if (ROMREGION_ISROMDATA(region))
			{
				/* if this is a device region, override with the device width and endianness */
				UINT8 width = ROMREGION_GETWIDTH(region) / 8;
				endianness_t endianness = ROMREGION_ISBIGENDIAN(region) ? ENDIANNESS_BIG : ENDIANNESS_LITTLE;
				if (romdata->machine().device(regiontag) != NULL)
					normalize_flags_for_device(romdata->machine(), regiontag, width, endianness);

				/* remember the base and length */
				romdata->region = romdata->machine().memory().region_alloc(regiontag, regionlength, width, endianness);
				LOG(("Allocated %X bytes @ %p\n", romdata->region->bytes(), romdata->region->base()));

				/* clear the region if it's requested */
				if (ROMREGION_ISERASE(region))
					memset(romdata->region->base(), ROMREGION_GETERASEVAL(region), romdata->region->bytes());

				/* or if it's sufficiently small (<= 4MB) */
				else if (romdata->region->bytes() <= 0x400000)
					memset(romdata->region->base(), 0, romdata->region->bytes());

#ifdef MAME_DEBUG
				/* if we're debugging, fill region with random data to catch errors */
				else
					fill_random(romdata->machine(), romdata->region->base(), romdata->region->bytes());
#endif

				/* now process the entries in the region */
				process_rom_entries(romdata, device->shortname(), region, region + 1, device, FALSE);
			}
			else if (ROMREGION_ISDISKDATA(region))
				process_disk_entries(romdata, regiontag, region, region + 1, NULL);
		}

	/* now go back and post-process all the regions */
	for (device_t *device = deviter.first(); device != NULL; device = deviter.next())
		for (const rom_entry *region = rom_first_region(*device); region != NULL; region = rom_next_region(region))
		{
			rom_region_name(regiontag, *device, region);
			region_post_process(romdata, regiontag, ROMREGION_ISINVERTED(region));
		}
}

int cli_info_listcrc(core_options *options, const char *gamename)
{
	int drvindex, count = 0;

	/* iterate over drivers */
	for (drvindex = 0; drivers[drvindex]; drvindex++)
		if (mame_strwildcmp(gamename, drivers[drvindex]->name) == 0)
		{
			const rom_entry *region, *rom;

			/* iterate over regions, and then ROMs within the region */
			for (region = rom_first_region(drivers[drvindex]); region; region = rom_next_region(region))
				for (rom = rom_first_file(region); rom; rom = rom_next_file(rom))
				{
					char hashbuf[HASH_BUF_SIZE];

					/* if we have a CRC, display it */
					if (hash_data_extract_printable_checksum(ROM_GETHASHDATA(rom), HASH_CRC, hashbuf))
						mame_printf_info("%s %-12s %s\n", hashbuf, ROM_GETNAME(rom), drivers[drvindex]->description);
				}

			count++;
		}

	/* return an error if none found */
	return (count > 0) ? MAMERR_NONE : MAMERR_NO_SUCH_GAME;
}

static int process_cartridge(mess_image *image, mame_file *file)
{
	const rom_entry *romrgn, *roment;
	int position, result;

	romrgn = rom_first_region(Machine->gamedrv);
	while(romrgn)
	{
		roment = romrgn + 1;
		while(!ROMENTRY_ISREGIONEND(roment))
		{
			if (is_cart_roment(roment))
			{
				parse_rom_name(roment, &position, NULL);
				if (position == image_index_in_device(image))
				{
					result = load_cartridge(romrgn, roment, file);
					if (!result)
						return result;
				}
			}
			roment++;
		}
		romrgn = rom_next_region(romrgn);
	}
	return INIT_PASS;
}

static void match_roms(core_options *options, const char *hash, int length, int *found)
{
	int drvindex;

	/* iterate over drivers */
	for (drvindex = 0; drivers[drvindex] != NULL; drvindex++)
	{
		machine_config *config = global_alloc(machine_config(drivers[drvindex]->machine_config));
		const rom_entry *region, *rom;
		const rom_source *source;

		/* iterate over sources, regions and files within the region */
		for (source = rom_first_source(drivers[drvindex], config); source != NULL; source = rom_next_source(drivers[drvindex], config, source))
			for (region = rom_first_region(drivers[drvindex], source); region; region = rom_next_region(region))
				for (rom = rom_first_file(region); rom; rom = rom_next_file(rom))
					if (hash_data_is_equal(hash, ROM_GETHASHDATA(rom), 0))
					{
						int baddump = hash_data_has_info(ROM_GETHASHDATA(rom), HASH_INFO_BAD_DUMP);

						/* output information about the match */
						if (*found != 0)
							mame_printf_info("                    ");
						mame_printf_info("= %s%-20s  %-10s %s\n", baddump ? "(BAD) " : "", ROM_GETNAME(rom), drivers[drvindex]->name, drivers[drvindex]->description);
						(*found)++;
					}

		global_free(config);
	}

	softlist_match_roms( options, hash, length, found );
}

static int process_cartridge(device_image_interface *image, process_mode mode)
{
	const rom_source *source;
	const rom_entry *romrgn, *roment;
	int result = 0;

	for (source = rom_first_source(image->device().machine().config()); source != NULL; source = rom_next_source(*source))
	{
		for (romrgn = rom_first_region(*source); romrgn != NULL; romrgn = rom_next_region(romrgn))
		{
			roment = romrgn + 1;
			while(!ROMENTRY_ISREGIONEND(roment))
			{
				if (ROMENTRY_GETTYPE(roment) == ROMENTRYTYPE_CARTRIDGE)
				{
					if (strcmp(roment->_hashdata,image->device().tag())==0)
					{
						result |= load_cartridge(image, romrgn, roment, mode);

						/* if loading failed in any cart region, stop loading */
						if (result)
							return result;
					}
				}
				roment++;
			}
		}
	}

	return IMAGE_INIT_PASS;
}

int cartslot_image_device::process_cartridge(bool load)
{
	const rom_entry *romrgn, *roment;
	int result = 0;

	device_iterator deviter(device().mconfig().root_device());
	for (device_t *device = deviter.first(); device != NULL; device = deviter.next())
		for (romrgn = rom_first_region(*device); romrgn != NULL; romrgn = rom_next_region(romrgn))
		{
			roment = romrgn + 1;
			while(!ROMENTRY_ISREGIONEND(roment))
			{
				if (ROMENTRY_GETTYPE(roment) == ROMENTRYTYPE_CARTRIDGE)
				{
					astring regiontag;
					this->device().siblingtag(regiontag, roment->_hashdata);

					if (strcmp(regiontag.cstr(),this->device().tag())==0)
					{
						result |= load_cartridge(romrgn, roment, load);

						/* if loading failed in any cart region, stop loading */
						if (result)
							return result;
					}
				}
				roment++;
			}
		}

	return IMAGE_INIT_PASS;
}

BOOL DriverUsesRoms(int driver_index)
{
	const struct GameDriver *gamedrv = drivers[driver_index];
	const struct RomModule *region, *rom;

	for (region = rom_first_region(gamedrv); region; region = rom_next_region(region))
		for (rom = rom_first_file(region); rom; rom = rom_next_file(rom))
			return TRUE;
	return FALSE;
}

/* returns 1 if rom is defined in this set */
int RomInSet (const struct GameDriver *gamedrv, const char* hash)
{
	const struct RomModule *region, *rom;

	for (region = rom_first_region(gamedrv); region; region = rom_next_region(region))
		for (rom = rom_first_file(region); rom; rom = rom_next_file(rom))
			/* Compare all the available checksums */
			if (hash_data_is_equal(ROM_GETHASHDATA(rom), hash, 0))
				return 1;

	return 0;
}

/* returns 1 if rom is defined in this set */
int audit_is_rom_used (const game_driver *gamedrv, const char* hash)
{
	const rom_entry *region, *rom;

	for (region = rom_first_region(gamedrv); region; region = rom_next_region(region))
		for (rom = rom_first_file(region); rom; rom = rom_next_file(rom))
			/* Compare all the available checksums */
			if (hash_data_is_equal(ROM_GETHASHDATA(rom), hash, 0))
				return 1;

	return 0;
}

BOOL DriverIsHarddisk(int driver_index)
{
	const struct RomModule *region;

	const struct GameDriver *gamedrv = drivers[driver_index];

	for (region = rom_first_region(gamedrv); region; region = rom_next_region(region))
		if (ROMREGION_ISDISKDATA(region))
			return TRUE;

	return FALSE;	
}

device_t *media_auditor::find_shared_device(device_t &device, const hash_collection &romhashes, UINT64 romlength)
{
    // doesn't apply to NO_DUMP items
    if (romhashes.flag(hash_collection::FLAG_NO_DUMP))
        return NULL;

    // special case for non-root devices
    device_t *highest_device = NULL;
    if (device.owner() != NULL)
    {
        for (const rom_entry *region = rom_first_region(device); region != NULL; region = rom_next_region(region))
            for (const rom_entry *rom = rom_first_file(region); rom != NULL; rom = rom_next_file(rom))
                if (ROM_GETLENGTH(rom) == romlength)
                {
                    hash_collection hashes(ROM_GETHASHDATA(rom));
                    if (hashes == romhashes)
                        highest_device = &device;
                }
    }
    else
    {
        // iterate up the parent chain
        for (int drvindex = m_enumerator.find(m_enumerator.driver().parent); drvindex != -1; drvindex = m_enumerator.find(m_enumerator.driver(drvindex).parent))
        {
            device_iterator deviter(m_enumerator.config(drvindex).root_device());
            for (device_t *scandevice = deviter.first(); scandevice != NULL; scandevice = deviter.next())
                for (const rom_entry *region = rom_first_region(*scandevice); region; region = rom_next_region(region))
                    for (const rom_entry *rom = rom_first_file(region); rom; rom = rom_next_file(rom))
                        if (ROM_GETLENGTH(rom) == romlength)
                        {
                            hash_collection hashes(ROM_GETHASHDATA(rom));
                            if (hashes == romhashes)
                                highest_device = scandevice;
                        }
        }
    }

    return highest_device;
}

media_auditor::summary media_auditor::audit_device(device_t *device, const char *validation)
{
	// start fresh
	m_record_list.reset();

	// store validation for later
	m_validation = validation;
	m_searchpath = device->shortname();

	int found = 0;
	int required = 0;

	// now iterate over regions and ROMs within
	for (const rom_entry *region = rom_first_region(*device); region != nullptr; region = rom_next_region(region))
	{
		for (const rom_entry *rom = rom_first_file(region); rom; rom = rom_next_file(rom))
		{
			hash_collection hashes(ROM_GETHASHDATA(rom));

			// count the number of files with hashes
			if (!hashes.flag(hash_collection::FLAG_NO_DUMP) && !ROM_ISOPTIONAL(rom))
			{
				required++;
			}

			// audit a file
			audit_record *record = nullptr;
			if (ROMREGION_ISROMDATA(region))
				record = audit_one_rom(rom);

			// audit a disk
			else if (ROMREGION_ISDISKDATA(region))
				record = audit_one_disk(rom);

			// count the number of files that are found.
			if (record != nullptr && (record->status() == audit_record::STATUS_GOOD || record->status() == audit_record::STATUS_FOUND_INVALID))
			{
				found++;
			}
		}
	}

	if (found == 0 && required > 0)
	{
		m_record_list.reset();
		return NOTFOUND;
	}

	// return a summary
	return summarize(device->shortname());
}

device_t *media_auditor::find_shared_device(device_t &device, const char *name, const hash_collection &romhashes, UINT64 romlength)
{
	bool dumped = !romhashes.flag(hash_collection::FLAG_NO_DUMP);

	// special case for non-root devices
	device_t *highest_device = nullptr;
	if (device.owner() != nullptr)
	{
		for (const rom_entry *region = rom_first_region(device); region != nullptr; region = rom_next_region(region))
			for (const rom_entry *rom = rom_first_file(region); rom != nullptr; rom = rom_next_file(rom))
				if (ROM_GETLENGTH(rom) == romlength)
				{
					hash_collection hashes(ROM_GETHASHDATA(rom));
					if ((dumped && hashes == romhashes) || (!dumped && ROM_GETNAME(rom) == name))
						highest_device = &device;
				}
	}
	else
	{
		// iterate up the parent chain
		for (int drvindex = m_enumerator.find(m_enumerator.driver().parent); drvindex != -1; drvindex = m_enumerator.find(m_enumerator.driver(drvindex).parent))
		{
			device_iterator deviter(m_enumerator.config(drvindex).root_device());
			for (device_t *scandevice = deviter.first(); scandevice != nullptr; scandevice = deviter.next())
				for (const rom_entry *region = rom_first_region(*scandevice); region; region = rom_next_region(region))
					for (const rom_entry *rom = rom_first_file(region); rom; rom = rom_next_file(rom))
						if (ROM_GETLENGTH(rom) == romlength)
						{
							hash_collection hashes(ROM_GETHASHDATA(rom));
							if ((dumped && hashes == romhashes) || (!dumped && ROM_GETNAME(rom) == name))
								highest_device = scandevice;
						}
		}
	}

	return highest_device;
}

int media_auditor::also_used_by_parent(const hash_collection &romhashes)
{
	// iterate up the parent chain
	for (int drvindex = m_enumerator.find(m_enumerator.driver().parent); drvindex != -1; drvindex = m_enumerator.find(m_enumerator.driver(drvindex).parent))

		// see if the parent has the same ROM or not
		for (const rom_source *source = rom_first_source(m_enumerator.config(drvindex)); source != NULL; source = rom_next_source(*source))
			for (const rom_entry *region = rom_first_region(*source); region; region = rom_next_region(region))
				for (const rom_entry *rom = rom_first_file(region); rom; rom = rom_next_file(rom))
				{
					hash_collection hashes(ROM_GETHASHDATA(rom));
					if (!hashes.flag(hash_collection::FLAG_NO_DUMP) && hashes == romhashes)
						return drvindex;
				}

	// nope, return -1
	return -1;
}