static int image_checkhash(mess_image *image)
{
const game_driver *drv;
const struct IODevice *dev;
mame_file *file;
char hash_string[HASH_BUF_SIZE];
int rc;
/* this call should not be made when the image is not loaded */
assert(image->status & (IMAGE_STATUS_ISLOADING | IMAGE_STATUS_ISLOADED));
/* only calculate CRC if it hasn't been calculated, and the open_mode is read only */
if (!image->hash && !image->writeable && !image->created)
{
/* initialize key variables */
file = image_fp(image);
dev = image_device(image);
/* do not cause a linear read of 600 megs please */
/* TODO: use SHA/MD5 in the CHD header as the hash */
if (dev->type == IO_CDROM)
return FALSE;
if (!run_hash(file, dev->partialhash, hash_string, HASH_CRC | HASH_MD5 | HASH_SHA1))
return FALSE;
image->hash = image_strdup(image, hash_string);
if (!image->hash)
return FALSE;
/* now read the hash file */
drv = Machine->gamedrv;
do
{
rc = read_hash_config(drv->name, image);
drv = mess_next_compatible_driver(drv);
}
while(rc && drv);
}
return TRUE;
}
void device_image_interface::image_checkhash()
{
device_image_partialhash_func partialhash;
/* only calculate CRC if it hasn't been calculated, and the open_mode is read only */
if (m_hash.first() == NULL && m_readonly && !m_created)
{
/* do not cause a linear read of 600 megs please */
/* TODO: use SHA1 in the CHD header as the hash */
if (image_type() == IO_CDROM)
return;
/* Skip calculating the hash when we have an image mounted through a software list */
if ( m_software_info_ptr )
return;
/* retrieve the partial hash func */
partialhash = get_partial_hash();
run_hash(partialhash, m_hash, hash_collection::HASH_TYPES_ALL);
}
return;
}
void device_image_interface::image_checkhash()
{
device_image_partialhash_func partialhash;
// only calculate CRC if it hasn't been calculated, and the open_mode is read only
UINT32 crcval;
if (!m_hash.crc(crcval) && is_readonly() && !m_created)
{
// do not cause a linear read of 600 megs please
// TODO: use SHA1 in the CHD header as the hash
if (image_type() == IO_CDROM)
return;
// Skip calculating the hash when we have an image mounted through a software list
if ( m_software_info_ptr )
return;
// retrieve the partial hash func
partialhash = get_partial_hash();
run_hash(partialhash, m_hash, util::hash_collection::HASH_TYPES_ALL);
}
return;
}
static PyObject *hashtext_new(PyObject *self, PyObject *args)
{
return run_hash(args, hash_new_hashtext);
}
static PyObject *hashtext_old(PyObject *self, PyObject *args)
{
return run_hash(args, hash_old_hashtext);
}