def worker_thread(job_queue: Queue, signal_update: Signal):
while True:
xls_filepath: pathlib.Path
xls_filepath = job_queue.get(block=True)
df = DataImporter.xls_import(xls_filepath)
for idx, col in enumerate(df.columns):
if col[0:7] != 'Unnamed':
ds = DataSeries(df, idx, col)
ds.report()
signal_update.emit(ds.report_list)
def backup(self, out_dir: Union[Path, str], progress: Signal = None):
"""
Create a full untouched (but decrypted) ISO backup of a DVD with all
metadata intact.
Parameters:
out_dir: Directory to store the backup.
progress: Signal to emit progress updates to.
Raises:
SlipstreamNoKeysObtained if no CSS keys were obtained when needed.
SlipstreamReadError on unexpected read errors.
"""
self.log.info("Starting DVD backup for %s" % self.device)
fn = Path(out_dir) / ("%s.ISO.!ss" % self.cdlib.pvd.volume_identifier.replace(b"\x00", b"").strip().decode())
first_lba = 0 # lba values are 0-indexed
current_lba = first_lba
last_lba = self.cdlib.pvd.space_size - 1
disc_size = self.cdlib.pvd.log_block_size * self.cdlib.pvd.space_size
self.log.debug(
f"Reading sectors {first_lba:,} to {last_lba:,} with sector size {self.cdlib.pvd.log_block_size:,} B.\n"
f"Length: {last_lba + 1:,} sectors, {disc_size:,} bytes.\n"
f'Saving to "{fn.with_suffix("")}"...'
)
if self.dvdcss.is_scrambled():
self.log.debug("DVD is scrambled. Checking if all CSS keys can be cracked. This might take a while.")
self.vob_lba_offsets = self.get_vob_lbas(crack_keys=True)
if not self.vob_lba_offsets:
raise SlipstreamNoKeysObtained("No CSS title keys were returned, unable to decrypt.")
else:
self.log.debug("DVD isn't scrambled. CSS title key cracking skipped.")
f = fn.open("wb")
t = tqdm(total=last_lba + 1, unit="sectors")
while current_lba <= last_lba:
data = self.read(current_lba, min(self.dvdcss.BLOCK_BUFFER, last_lba - current_lba + 1))
f.write(data)
read_sectors = len(data) // self.cdlib.pvd.log_block_size
current_lba += read_sectors
if progress:
progress.emit((current_lba / last_lba) * 100)
t.update(read_sectors)
f.close()
t.close()
fn = fn.replace(fn.with_suffix(""))
self.log.info(
"Finished DVD Backup!\n"
f"Read a total of {current_lba:,} sectors ({os.path.getsize(fn):,}) bytes.\n"
)
