static int open_rom_file(rom_load_data *romdata, const rom_entry *romp)
{
mame_file_error filerr = FILERR_NOT_FOUND;
const game_driver *drv;
++romdata->romsloaded;
/* update status display */
display_loading_rom_message(ROM_GETNAME(romp), romdata);
/* Attempt reading up the chain through the parents. It automatically also
attempts any kind of load by checksum supported by the archives. */
romdata->file = NULL;
for (drv = Machine->gamedrv; !romdata->file && drv; drv = driver_get_clone(drv))
if (drv->name && *drv->name)
{
UINT8 crcs[4];
char *fname;
fname = assemble_3_strings(drv->name, PATH_SEPARATOR, ROM_GETNAME(romp));
if (hash_data_extract_binary_checksum(ROM_GETHASHDATA(romp), HASH_CRC, crcs))
{
UINT32 crc = (crcs[0] << 24) | (crcs[1] << 16) | (crcs[2] << 8) | crcs[3];
filerr = mame_fopen_crc(SEARCHPATH_ROM, fname, crc, OPEN_FLAG_READ, &romdata->file);
}
else
filerr = mame_fopen(SEARCHPATH_ROM, fname, OPEN_FLAG_READ, &romdata->file);
free(fname);
}
/* return the result */
return (filerr == FILERR_NONE);
}
/*-------------------------------------------------
load_software - software image loading
-------------------------------------------------*/
bool legacy_image_device_base::load_software(char *swlist, char *swname, rom_entry *start)
{
const rom_entry *region;
astring regiontag;
bool retVal = FALSE;
for (region = start; region != NULL; region = rom_next_region(region))
{
/* loop until we hit the end of this region */
const rom_entry *romp = region + 1;
while (!ROMENTRY_ISREGIONEND(romp))
{
/* handle files */
if (ROMENTRY_ISFILE(romp))
{
UINT32 crc = 0;
UINT8 crcbytes[4];
file_error filerr;
bool has_crc = hash_data_extract_binary_checksum(ROM_GETHASHDATA(romp), HASH_CRC, crcbytes);
if (has_crc)
crc = (crcbytes[0] << 24) | (crcbytes[1] << 16) | (crcbytes[2] << 8) | crcbytes[3];
astring fname(swlist, PATH_SEPARATOR, swname, PATH_SEPARATOR, ROM_GETNAME(romp));
if (has_crc)
filerr = mame_fopen_crc(libretro_content_directory, fname, crc, OPEN_FLAG_READ, &m_mame_file);
else
filerr = mame_fopen(libretro_content_directory, fname, OPEN_FLAG_READ, &m_mame_file);
if (filerr == FILERR_NONE)
{
m_file = mame_core_file(m_mame_file);
retVal = TRUE;
}
break; // load first item for start
}
romp++; /* something else; skip */
}
}
return retVal;
}
static int audit_one_rom(const rom_entry *rom, const game_driver *gamedrv, UINT32 validation, audit_record *record)
{
const game_driver *drv;
const rom_entry *chunk;
UINT32 crc = 0;
UINT8 crcs[4];
int has_crc;
/* fill in the record basics */
record->type = AUDIT_FILE_ROM;
record->name = ROM_GETNAME(rom);
record->exphash = ROM_GETHASHDATA(rom);
/* compute the expected length by summing the chunks */
for (chunk = rom_first_chunk(rom); chunk; chunk = rom_next_chunk(chunk))
record->explength += ROM_GETLENGTH(chunk);
/* see if we have a CRC and extract it if so */
has_crc = hash_data_extract_binary_checksum(record->exphash, HASH_CRC, crcs);
if (has_crc)
crc = (crcs[0] << 24) | (crcs[1] << 16) | (crcs[2] << 8) | crcs[3];
/* find the file and checksum it, getting the file length along the way */
for (drv = gamedrv; drv != NULL; drv = driver_get_clone(drv))
{
mame_file_error filerr;
mame_file *file;
char *fname;
/* open the file if we can */
fname = assemble_3_strings(drv->name, PATH_SEPARATOR, ROM_GETNAME(rom));
if (has_crc)
filerr = mame_fopen_crc(SEARCHPATH_ROM, fname, crc, OPEN_FLAG_READ, &file);
else
filerr = mame_fopen(SEARCHPATH_ROM, fname, OPEN_FLAG_READ, &file);
free(fname);
/* if we got it, extract the hash and length */
if (filerr == FILERR_NONE)
{
hash_data_copy(record->hash, mame_fhash(file, validation));
record->length = (UINT32)mame_fsize(file);
mame_fclose(file);
break;
}
}
/* if we failed to find the file, set the appropriate status */
if (drv == NULL)
{
const game_driver *parent;
/* no good dump */
if (hash_data_has_info(record->exphash, HASH_INFO_NO_DUMP))
set_status(record, AUDIT_STATUS_NOT_FOUND, SUBSTATUS_NOT_FOUND_NODUMP);
/* optional ROM */
else if (ROM_ISOPTIONAL(rom))
set_status(record, AUDIT_STATUS_NOT_FOUND, SUBSTATUS_NOT_FOUND_OPTIONAL);
/* not found and used by parent */
else if (rom_used_by_parent(gamedrv, rom, &parent))
set_status(record, AUDIT_STATUS_NOT_FOUND, (parent->flags & NOT_A_DRIVER) ? SUBSTATUS_NOT_FOUND_BIOS : SUBSTATUS_NOT_FOUND_PARENT);
/* just plain old not found */
else
set_status(record, AUDIT_STATUS_NOT_FOUND, SUBSTATUS_NOT_FOUND);
}
/* if we did find the file, do additional verification */
else
{
/* length mismatch */
if (record->explength != record->length)
set_status(record, AUDIT_STATUS_FOUND_INVALID, SUBSTATUS_FOUND_WRONG_LENGTH);
/* found but needs a dump */
else if (hash_data_has_info(record->exphash, HASH_INFO_NO_DUMP))
set_status(record, AUDIT_STATUS_GOOD, SUBSTATUS_FOUND_NODUMP);
/* incorrect hash */
else if (!hash_data_is_equal(record->exphash, record->hash, 0))
set_status(record, AUDIT_STATUS_FOUND_INVALID, SUBSTATUS_FOUND_BAD_CHECKSUM);
/* correct hash but needs a redump */
else if (hash_data_has_info(record->exphash, HASH_INFO_BAD_DUMP))
set_status(record, AUDIT_STATUS_GOOD, SUBSTATUS_GOOD_NEEDS_REDUMP);
/* just plain old good */
else
set_status(record, AUDIT_STATUS_GOOD, SUBSTATUS_GOOD);
}
/* return TRUE if we found anything at all */
return (drv != NULL);
}
