Just in case anyone else would have also a need for this.
Below is a little Python script that generates the *.ssif files from the *.m2ts files using the *.ssif.smap files:
Code: Select all
#!/usr/bin/python3
import sys
import os
import argparse
import re
smap_file_header = "# SSIF MAP FILE v1\n"
default_maximum_read_size = 1024**2
def main():
#parse command arguments
parser = argparse.ArgumentParser(allow_abbrev=False)
parser.add_argument("smap_files", type=str, nargs="+", help="The SMAP-files for which – using the M2TS-files listed therein – the SSIF-files shall be generated in the working directory.", metavar="FILENAME")
args = parser.parse_args()
#process SMAP-file operands
for smap_filename in args.smap_files:
with open(smap_filename, mode="rt") as smap_file:
#check SMAP-file header
line = smap_file.readline( len(smap_file_header) )
if line != smap_file_header:
print(f"Error: `{smap_filename}` is not a valid `*.smap`-file.", file=sys.stderr)
sys.exit(os.EX_DATAERR)
#determine SMAP-file name
ssif_filename = re.sub(r"\.ssif\.smap$", ".ssif", smap_filename)
if ssif_filename == smap_filename:
ssif_filename += ".ssif"
#create SSIF-file
with open(ssif_filename, mode="xb") as ssif_file:
#process lines of the SMAP-file
for line in smap_file:
#remove trailing newline (that is: the Line Feed (LF) control character)
if line[-1] == "\n":
line = line[:-1]
#ignore empty and comment lines
if re.fullmatch(r"[ \t]*(?:#.*)?", line):
continue
#parse record
m = re.fullmatch(r"(?P<filename>.*) (?P<offset>[0-9a-fA-F]+) (?P<length>[0-9a-fA-F]+)", line)
m2ts_filename = m["filename"]
offset = int(m["offset"], 16) * 2048
length = int(m["length"], 16) * 2048
#append range to SSIF-file
with open(m2ts_filename, mode="rb") as m2ts_file:
m2ts_file.seek(offset)
while length > 0:
#determine read size
if length > default_maximum_read_size:
read_size = default_maximum_read_size
else:
read_size = length
#read from the M2TS-file
buffer = m2ts_file.read(read_size)
buffer_size = len(buffer)
length -= buffer_size
#check for a premature end of the file
if (buffer_size == 0) and (length != 0):
print(f"Error: Couldn not read {length} bytes from `{m2ts_filename}`.", file=sys.stderr)
sys.exit(os.EX_DATAERR)
#write buffer
ssif_file.write(buffer)
sys.exit(os.EX_OK)
if __name__ == "__main__":
main()
#This program is free software: you can redistribute it and/or modify it under
#the terms of the GNU General Public License as published by the Free Software
#Foundation, either version 3 of the License, or (at your option) any later
#version.
#This program is distributed in the hope that it will be useful, but WITHOUT ANY
#WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
#PARTICULAR PURPOSE.
#See the GNU General Public License for more details.
#You should have received a copy of the GNU General Public License along with
#this program. If not, see <https://www.gnu.org/licenses/>.
HTH,
Jemima
Using any DVD/Blu-ray burning software, such as Imgburn, use the write to image to create the full iso from the mounted mini iso