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"""
@copyright: 2009 Bastian Blank <waldi@debian.org>
@license: GNU GPL-3
"""
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3 as
# published by the Free Software Foundation.
#
# 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 <http://www.gnu.org/licenses/>.
import struct
class MalformedIfoHeaderError(Exception):
pass
class VmgIfoHeader:
_struct = struct.Struct('>12s I 12x IHI 24x H 32x Q 24x II 56x IIIIIIII 32x 1792x')
def __init__(self, buf):
data = self._struct.unpack(buf)
(id,
self.part_bup_end,
self.part_ifo_end,
version,
category,
self.number_titlesets,
pos,
vmgi_mat_end,
fp_pgc_start,
self.part_menu_vob_start,
vmgm1_start,
vmgm2_start,
vmgm3_start,
vmgm4_start,
vmgm5_start,
vmgm6_start,
vmgm7_start) = data
if id != b'DVDVIDEO-VMG':
raise MalformedIfoHeaderError
class VtsIfoHeader:
_struct = struct.Struct('>12s I 12x IH 94x I 60x IIIIIIIIII 24x 1792x')
def __init__(self, buf):
data = self._struct.unpack(buf)
(id,
self.part_bup_end,
self.part_ifo_end,
version,
vts_mat_end,
self.part_menu_vob_start,
self.part_title_vob_start,
vtsm1_start,
vtsm2_start,
vtsm3_start,
vtsm4_start,
vtsm5_start,
vtsm6_start,
vtsm7_start,
vtsm8_start,
) = data
if id != b'DVDVIDEO-VTS':
raise MalformedIfoHeaderError
class _Ifo:
def dump(self):
return self._file.dump(self.header.part_ifo_end + 1),
class VmgIfo(_Ifo):
def __init__(self, file):
self._file = file
self.header = VmgIfoHeader(self._file.read_sector(0))
class VtsIfo(_Ifo):
def __init__(self, file):
self._file = file
self.header = VtsIfoHeader(self._file.read_sector(0))
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