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SickGear/lib/enzyme/mp4.py
SickGear e56303798c Change bump to major version 3.xx to signal that this branch supports Python3+ only. 
Initial SickGear for Python 3.
2023-02-09 13:41:15 +00:00

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# -*- coding: utf-8 -*-
# enzyme - Video metadata parser
# Copyright 2011-2012 Antoine Bertin <diaoulael@gmail.com>
# Copyright 2003-2007 Thomas Schueppel <stain@acm.org>
# Copyright 2003-2007 Dirk Meyer <dischi@freevo.org>
#
# This file is part of enzyme.
#
# enzyme 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.
#
# enzyme 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 enzyme. If not, see <http://www.gnu.org/licenses/>.
__all__ = ['Parser']
import zlib
import logging
import struct
from .exceptions import ParseError
from . import core
from six import byte2int, indexbytes, StringIO
from _23 import decode_str
# get logging object
log = logging.getLogger(__name__)
# http://developer.apple.com/documentation/QuickTime/QTFF/index.html
# http://developer.apple.com/documentation/QuickTime/QTFF/QTFFChap4/\
# chapter_5_section_2.html#//apple_ref/doc/uid/TP40000939-CH206-BBCBIICE
# Note: May need to define custom log level to work like ATOM_DEBUG did here
QTUDTA = {
'nam': 'title',
'aut': 'artist',
'cpy': 'copyright'
}
QTLANGUAGES = {
0: "en",
1: "fr",
2: "de",
3: "it",
4: "nl",
5: "sv",
6: "es",
7: "da",
8: "pt",
9: "no",
10: "he",
11: "ja",
12: "ar",
13: "fi",
14: "el",
15: "is",
16: "mt",
17: "tr",
18: "hr",
19: "Traditional Chinese",
20: "ur",
21: "hi",
22: "th",
23: "ko",
24: "lt",
25: "pl",
26: "hu",
27: "et",
28: "lv",
29: "Lappish",
30: "fo",
31: "Farsi",
32: "ru",
33: "Simplified Chinese",
34: "Flemish",
35: "ga",
36: "sq",
37: "ro",
38: "cs",
39: "sk",
40: "sl",
41: "yi",
42: "sr",
43: "mk",
44: "bg",
45: "uk",
46: "be",
47: "uz",
48: "kk",
49: "az",
50: "AzerbaijanAr",
51: "hy",
52: "ka",
53: "mo",
54: "ky",
55: "tg",
56: "tk",
57: "mn",
58: "MongolianCyr",
59: "ps",
60: "ku",
61: "ks",
62: "sd",
63: "bo",
64: "ne",
65: "sa",
66: "mr",
67: "bn",
68: "as",
69: "gu",
70: "pa",
71: "or",
72: "ml",
73: "kn",
74: "ta",
75: "te",
76: "si",
77: "my",
78: "Khmer",
79: "lo",
80: "vi",
81: "id",
82: "tl",
83: "MalayRoman",
84: "MalayArabic",
85: "am",
86: "ti",
87: "om",
88: "so",
89: "sw",
90: "Ruanda",
91: "Rundi",
92: "Chewa",
93: "mg",
94: "eo",
128: "cy",
129: "eu",
130: "ca",
131: "la",
132: "qu",
133: "gn",
134: "ay",
135: "tt",
136: "ug",
137: "Dzongkha",
138: "JavaneseRom",
}
class MPEG4(core.AVContainer):
"""
Parser for the MP4 container format. This format is mostly
identical to Apple Quicktime and 3GP files. It maps to mp4, mov,
qt and some other extensions.
"""
table_mapping = {'QTUDTA': QTUDTA}
def __init__(self, file):
core.AVContainer.__init__(self)
self._references = []
self.mime = 'video/quicktime'
self.type = 'Quicktime Video'
h = file.read(8)
try:
(size, t) = struct.unpack('>I4s', h)
except struct.error:
# EOF.
raise ParseError()
if t == 'ftyp':
# file type information
if size >= 12:
# this should always happen
if file.read(4) != 'qt ':
# not a quicktime movie, it is a mpeg4 container
self.mime = 'video/mp4'
self.type = 'MPEG-4 Video'
size -= 4
file.seek(size - 8, 1)
h = file.read(8)
(size, t) = struct.unpack('>I4s', h)
while t in ['mdat', 'skip']:
# movie data at the beginning, skip
file.seek(size - 8, 1)
h = file.read(8)
(size, t) = struct.unpack('>I4s', h)
if t not in ['moov', 'wide', 'free']:
log.debug(u'invalid header: %r' % t)
raise ParseError()
# Extended size
if size == 1:
size = struct.unpack('>Q', file.read(8))
# Back over the atom header we just read, since _readatom expects the
# file position to be at the start of an atom.
file.seek(-8, 1)
while self._readatom(file):
pass
if self._references:
self._set('references', self._references)
def _readatom(self, file):
s = file.read(8)
if len(s) < 8:
return 0
atomsize, atomtype = struct.unpack('>I4s', s)
if not decode_str(atomtype, 'latin1').isalnum():
# stop at nonsense data
return 0
log.debug(u'%r [%X]' % (atomtype, atomsize))
if atomtype == 'udta':
# Userdata (Metadata)
pos = 0
tabl = {}
i18ntabl = {}
atomdata = file.read(atomsize - 8)
while pos < atomsize - 12:
(datasize, datatype) = struct.unpack('>I4s', atomdata[pos:pos + 8])
if byte2int(datatype) == 169:
# i18n Metadata...
mypos = 8 + pos
while mypos + 4 < datasize + pos:
# first 4 Bytes are i18n header
(tlen, lang) = struct.unpack('>HH', atomdata[mypos:mypos + 4])
i18ntabl[lang] = i18ntabl.get(lang, {})
length = atomdata[mypos + 4:mypos + tlen + 4]
i18ntabl[lang][datatype[1:]] = length
mypos += tlen + 4
elif datatype == 'WLOC':
# Drop Window Location
pass
else:
if byte2int(atomdata[pos + 8:pos + datasize]) > 1:
tabl[datatype] = atomdata[pos + 8:pos + datasize]
pos += datasize
if len(i18ntabl.keys()) > 0:
for k in i18ntabl.keys():
if k in QTLANGUAGES and QTLANGUAGES[k] == 'en':
self._appendtable('QTUDTA', i18ntabl[k])
self._appendtable('QTUDTA', tabl)
else:
log.debug(u'NO i18')
self._appendtable('QTUDTA', tabl)
elif atomtype == 'trak':
atomdata = file.read(atomsize - 8)
pos = 0
trackinfo = {}
tracktype = None
while pos < atomsize - 8:
(datasize, datatype) = struct.unpack('>I4s', atomdata[pos:pos + 8])
if datatype == 'tkhd':
tkhd = struct.unpack('>6I8x4H36xII', atomdata[pos + 8:pos + datasize])
trackinfo['width'] = tkhd[10] >> 16
trackinfo['height'] = tkhd[11] >> 16
trackinfo['id'] = tkhd[3]
try:
# XXX Timestamp of Seconds is since January 1st 1904!
# XXX 2082844800 is the difference between Unix and
# XXX Apple time. FIXME to work on Apple, too
self.timestamp = int(tkhd[1]) - 2082844800
except (BaseException, Exception):
log.exception(u'There was trouble extracting timestamp')
elif datatype == 'mdia':
pos += 8
datasize -= 8
log.debug(u'--> mdia information')
while datasize:
mdia = struct.unpack('>I4s', atomdata[pos:pos + 8])
if mdia[1] == 'mdhd':
# Parse based on version of mdhd header. See
# http://wiki.multimedia.cx/index.php?title=QuickTime_container#mdhd
ver = indexbytes(atomdata, pos + 8)
if ver == 0:
mdhd = struct.unpack('>IIIIIhh', atomdata[pos + 8:pos + 8 + 24])
elif ver == 1:
mdhd = struct.unpack('>IQQIQhh', atomdata[pos + 8:pos + 8 + 36])
else:
mdhd = None
if mdhd:
# duration / time scale
trackinfo['length'] = mdhd[4] / mdhd[3]
if mdhd[5] in QTLANGUAGES:
trackinfo['language'] = QTLANGUAGES[mdhd[5]]
elif mdhd[5] == 0x7FF:
trackinfo['language'] = 'und'
elif mdhd[5] >= 0x400:
# language code detected as explained in:
# https://developer.apple.com/library/mac/documentation/QuickTime/qtff/QTFFChap4/qtff4.html#//apple_ref/doc/uid/TP40000939-CH206-35103
language = bytearray(
[((mdhd[5] & 0x7C00) >> 10) + 0x60, ((mdhd[5] & 0x3E0) >> 5) + 0x60,
(mdhd[5] & 0x1F) + 0x60])
trackinfo['language'] = str(language)
# mdhd[6] == quality
self.length = max(self.length, mdhd[4] / mdhd[3])
elif mdia[1] == 'minf':
# minf has only atoms inside
pos -= (mdia[0] - 8)
datasize += (mdia[0] - 8)
elif mdia[1] == 'stbl':
# stbl has only atoms inside
pos -= (mdia[0] - 8)
datasize += (mdia[0] - 8)
elif mdia[1] == 'hdlr':
hdlr = struct.unpack('>I4s4s', atomdata[pos + 8:pos + 8 + 12])
if hdlr[1] == 'mhlr' or hdlr[1] == '\0\0\0\0':
if hdlr[2] == 'vide':
tracktype = 'video'
if hdlr[2] == 'soun':
tracktype = 'audio'
if hdlr[2] == 'subt' or hdlr[2] == 'sbtl' or hdlr[2] == 'subp' or hdlr[2] == 'text':
tracktype = 'subtitle'
elif mdia[1] == 'stsd':
stsd = struct.unpack('>2I', atomdata[pos + 8:pos + 8 + 8])
if stsd[1] > 0:
codec = atomdata[pos + 16:pos + 16 + 8]
codec = struct.unpack('>I4s', codec)
trackinfo['codec'] = codec[1]
if codec[1] == 'jpeg':
tracktype = 'image'
elif mdia[1] == 'dinf':
dref = struct.unpack('>I4s', atomdata[pos + 8:pos + 8 + 8])
log.debug(u' --> %r, %r (useless)' % mdia)
if dref[1] == 'dref':
num = struct.unpack('>I', atomdata[pos + 20:pos + 20 + 4])[0]
rpos = pos + 20 + 4
for ref in range(num):
# FIXME: do somthing if this references
ref = struct.unpack('>I3s', atomdata[rpos:rpos + 7])
data = atomdata[rpos + 7:rpos + ref[0]]
rpos += ref[0]
else:
if mdia[1].startswith('st'):
log.debug(u' --> %r, %r (sample)' % mdia)
elif mdia[1] == 'vmhd' and not tracktype:
# indicates that this track is video
tracktype = 'video'
elif mdia[1] in ['vmhd', 'smhd'] and not tracktype:
# indicates that this track is audio
tracktype = 'audio'
else:
log.debug(u' --> %r, %r (unknown)' % mdia)
pos += mdia[0]
datasize -= mdia[0]
elif datatype == 'udta':
log.debug(u'udta: %r' % struct.unpack('>I4s', atomdata[:8]))
else:
if datatype == 'edts':
log.debug(u'--> %r [%d] (edit list)' % (datatype, datasize))
else:
log.debug(u'--> %r [%d] (unknown)' % (datatype, datasize))
pos += datasize
info = None
if tracktype == 'video':
info = core.VideoStream()
self.video.append(info)
if tracktype == 'audio':
info = core.AudioStream()
self.audio.append(info)
if tracktype == 'subtitle':
info = core.Subtitle()
self.subtitles.append(info)
if info:
for key, value in trackinfo.items():
setattr(info, key, value)
elif atomtype == 'mvhd':
# movie header
mvhd = struct.unpack('>6I2h', file.read(28))
self.length = max(self.length, mvhd[4] / mvhd[3])
self.volume = mvhd[6]
file.seek(atomsize - 8 - 28, 1)
elif atomtype == 'cmov':
# compressed movie
datasize, atomtype = struct.unpack('>I4s', file.read(8))
if not atomtype == 'dcom':
return atomsize
method = struct.unpack('>4s', file.read(datasize - 8))[0]
datasize, atomtype = struct.unpack('>I4s', file.read(8))
if not atomtype == 'cmvd':
return atomsize
if method == 'zlib':
data = file.read(datasize - 8)
try:
decompressed = zlib.decompress(data)
except Exception:
try:
decompressed = zlib.decompress(data[4:])
except Exception:
log.exception(u'There was a proble decompressiong atom')
return atomsize
decompressedIO = StringIO.StringIO(decompressed)
while self._readatom(decompressedIO):
pass
else:
log.info(u'unknown compression %r' % method)
# unknown compression method
file.seek(datasize - 8, 1)
elif atomtype == 'moov':
# decompressed movie info
while self._readatom(file):
pass
elif atomtype == 'mdat':
pos = file.tell() + atomsize - 8
# maybe there is data inside the mdat
log.info(u'parsing mdat')
while self._readatom(file):
pass
log.info(u'end of mdat')
file.seek(pos, 0)
elif atomtype == 'rmra':
# reference list
while self._readatom(file):
pass
elif atomtype == 'rmda':
# reference
atomdata = file.read(atomsize - 8)
pos = 0
url = ''
quality = 0
datarate = 0
while pos < atomsize - 8:
(datasize, datatype) = struct.unpack('>I4s', atomdata[pos:pos + 8])
if datatype == 'rdrf':
rflags, rtype, rlen = struct.unpack('>I4sI', atomdata[pos + 8:pos + 20])
if rtype == 'url ':
url = atomdata[pos + 20:pos + 20 + rlen]
if url.find('\0') > 0:
url = url[:url.find('\0')]
elif datatype == 'rmqu':
quality = struct.unpack('>I', atomdata[pos + 8:pos + 12])[0]
elif datatype == 'rmdr':
datarate = struct.unpack('>I', atomdata[pos + 12:pos + 16])[0]
pos += datasize
if url:
self._references.append((url, quality, datarate))
if atomtype not in ['wide', 'free']:
log.info(u'unhandled base atom %r' % atomtype)
# Skip unknown atoms
try:
file.seek(atomsize - 8, 1)
except IOError:
return 0
return atomsize
Parser = MPEG4
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