moparisthebest/SickRage
1
0
Fork 0
mirror of https://github.com/moparisthebest/SickRage synced 2024-12-15 04:22:17 -05:00
Code Issues Releases Wiki Activity
50dd3a531d
SickRage/lib/enzyme/mkv.py

841 lines
30 KiB
Python
Raw Normal View History

Welcome to our SickBeard-TVRage Edition ... This version of SickBeard uses both TVDB and TVRage to search and gather it's series data from allowing you to now have access to and download shows that you couldn't before because of being locked into only what TheTVDB had to offer. Also this edition is based off the code we used in our XEM editon so it does come with scene numbering support as well as all the other features our XEM edition has to offer. Please before using this with your existing database (sickbeard.db) please make a backup copy of it and delete any other database files such as cache.db and failed.db if present, we HIGHLY recommend starting out with no database files at all to make this a fresh start but the choice is at your own risk! Enjoy!
2014-03-10 01:18:05 -04:00
# -*- coding: utf-8 -*-
# enzyme - Video metadata parser
# Copyright 2011-2012 Antoine Bertin <diaoulael@gmail.com>
# Copyright 2003-2006 Thomas Schueppel <stain@acm.org>
# Copyright 2003-2006 Dirk Meyer <dischi@freevo.org>
# Copyright 2003-2006 Jason Tackaberry <tack@urandom.ca>
#
# 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/>.
from datetime import datetime
from exceptions import ParseError
from struct import unpack
import core
import logging
import re
__all__ = ['Parser']
# get logging object
log = logging.getLogger(__name__)
# Main IDs for the Matroska streams
MATROSKA_VIDEO_TRACK = 0x01
MATROSKA_AUDIO_TRACK = 0x02
MATROSKA_SUBTITLES_TRACK = 0x11
MATROSKA_HEADER_ID = 0x1A45DFA3
MATROSKA_TRACKS_ID = 0x1654AE6B
MATROSKA_CUES_ID = 0x1C53BB6B
MATROSKA_SEGMENT_ID = 0x18538067
MATROSKA_SEGMENT_INFO_ID = 0x1549A966
MATROSKA_CLUSTER_ID = 0x1F43B675
MATROSKA_VOID_ID = 0xEC
MATROSKA_CRC_ID = 0xBF
MATROSKA_TIMECODESCALE_ID = 0x2AD7B1
MATROSKA_DURATION_ID = 0x4489
MATROSKA_CRC32_ID = 0xBF
MATROSKA_TIMECODESCALE_ID = 0x2AD7B1
MATROSKA_MUXING_APP_ID = 0x4D80
MATROSKA_WRITING_APP_ID = 0x5741
MATROSKA_CODEC_ID = 0x86
MATROSKA_CODEC_PRIVATE_ID = 0x63A2
MATROSKA_FRAME_DURATION_ID = 0x23E383
MATROSKA_VIDEO_SETTINGS_ID = 0xE0
MATROSKA_VIDEO_WIDTH_ID = 0xB0
MATROSKA_VIDEO_HEIGHT_ID = 0xBA
MATROSKA_VIDEO_INTERLACED_ID = 0x9A
MATROSKA_VIDEO_DISPLAY_WIDTH_ID = 0x54B0
MATROSKA_VIDEO_DISPLAY_HEIGHT_ID = 0x54BA
MATROSKA_AUDIO_SETTINGS_ID = 0xE1
MATROSKA_AUDIO_SAMPLERATE_ID = 0xB5
MATROSKA_AUDIO_CHANNELS_ID = 0x9F
MATROSKA_TRACK_UID_ID = 0x73C5
MATROSKA_TRACK_NUMBER_ID = 0xD7
MATROSKA_TRACK_TYPE_ID = 0x83
MATROSKA_TRACK_LANGUAGE_ID = 0x22B59C
MATROSKA_TRACK_OFFSET = 0x537F
MATROSKA_TRACK_FLAG_DEFAULT_ID = 0x88
MATROSKA_TRACK_FLAG_ENABLED_ID = 0xB9
MATROSKA_TITLE_ID = 0x7BA9
MATROSKA_DATE_UTC_ID = 0x4461
MATROSKA_NAME_ID = 0x536E
MATROSKA_CHAPTERS_ID = 0x1043A770
MATROSKA_CHAPTER_UID_ID = 0x73C4
MATROSKA_EDITION_ENTRY_ID = 0x45B9
MATROSKA_CHAPTER_ATOM_ID = 0xB6
MATROSKA_CHAPTER_TIME_START_ID = 0x91
MATROSKA_CHAPTER_TIME_END_ID = 0x92
MATROSKA_CHAPTER_FLAG_ENABLED_ID = 0x4598
MATROSKA_CHAPTER_DISPLAY_ID = 0x80
MATROSKA_CHAPTER_LANGUAGE_ID = 0x437C
MATROSKA_CHAPTER_STRING_ID = 0x85
MATROSKA_ATTACHMENTS_ID = 0x1941A469
MATROSKA_ATTACHED_FILE_ID = 0x61A7
MATROSKA_FILE_DESC_ID = 0x467E
MATROSKA_FILE_NAME_ID = 0x466E
MATROSKA_FILE_MIME_TYPE_ID = 0x4660
MATROSKA_FILE_DATA_ID = 0x465C
MATROSKA_SEEKHEAD_ID = 0x114D9B74
MATROSKA_SEEK_ID = 0x4DBB
MATROSKA_SEEKID_ID = 0x53AB
MATROSKA_SEEK_POSITION_ID = 0x53AC
MATROSKA_TAGS_ID = 0x1254C367
MATROSKA_TAG_ID = 0x7373
MATROSKA_TARGETS_ID = 0x63C0
MATROSKA_TARGET_TYPE_VALUE_ID = 0x68CA
MATROSKA_TARGET_TYPE_ID = 0x63CA
MATRSOKA_TAGS_TRACK_UID_ID = 0x63C5
MATRSOKA_TAGS_EDITION_UID_ID = 0x63C9
MATRSOKA_TAGS_CHAPTER_UID_ID = 0x63C4
MATRSOKA_TAGS_ATTACHMENT_UID_ID = 0x63C6
MATROSKA_SIMPLE_TAG_ID = 0x67C8
MATROSKA_TAG_NAME_ID = 0x45A3
MATROSKA_TAG_LANGUAGE_ID = 0x447A
MATROSKA_TAG_STRING_ID = 0x4487
MATROSKA_TAG_BINARY_ID = 0x4485
# See mkv spec for details:
# http://www.matroska.org/technical/specs/index.html
# Map to convert to well known codes
# http://haali.cs.msu.ru/mkv/codecs.pdf
FOURCCMap = {
'V_THEORA': 'THEO',
'V_SNOW': 'SNOW',
'V_MPEG4/ISO/ASP': 'MP4V',
'V_MPEG4/ISO/AVC': 'AVC1',
'A_AC3': 0x2000,
'A_MPEG/L3': 0x0055,
'A_MPEG/L2': 0x0050,
'A_MPEG/L1': 0x0050,
'A_DTS': 0x2001,
'A_PCM/INT/LIT': 0x0001,
'A_PCM/FLOAT/IEEE': 0x003,
'A_TTA1': 0x77a1,
'A_WAVPACK4': 0x5756,
'A_VORBIS': 0x6750,
'A_FLAC': 0xF1AC,
'A_AAC': 0x00ff,
'A_AAC/': 0x00ff
}
def matroska_date_to_datetime(date):
"""
Converts a date in Matroska's date format to a python datetime object.
Returns the given date string if it could not be converted.
"""
# From the specs:
# The fields with dates should have the following format: YYYY-MM-DD
# HH:MM:SS.MSS [...] To store less accuracy, you remove items starting
# from the right. To store only the year, you would use, "2004". To store
# a specific day such as May 1st, 2003, you would use "2003-05-01".
format = re.split(r'([-:. ])', '%Y-%m-%d %H:%M:%S.%f')
while format:
try:
return datetime.strptime(date, ''.join(format))
except ValueError:
format = format[:-2]
return date
def matroska_bps_to_bitrate(bps):
"""
Tries to convert a free-form bps string into a bitrate (bits per second).
"""
m = re.search('([\d.]+)\s*(\D.*)', bps)
if m:
bps, suffix = m.groups()
if 'kbit' in suffix:
return float(bps) * 1024
elif 'kbyte' in suffix:
return float(bps) * 1024 * 8
elif 'byte' in suffix:
return float(bps) * 8
elif 'bps' in suffix or 'bit' in suffix:
return float(bps)
if bps.replace('.', '').isdigit():
if float(bps) < 30000:
# Assume kilobits and convert to bps
return float(bps) * 1024
return float(bps)
# Used to convert the official matroska tag names (only lower-cased) to core
# attributes. tag name -> attr, filter
TAGS_MAP = {
# From Media core
u'title': ('title', None),
u'subtitle': ('caption', None),
u'comment': ('comment', None),
u'url': ('url', None),
u'artist': ('artist', None),
u'keywords': ('keywords', lambda s: [word.strip() for word in s.split(',')]),
u'composer_nationality': ('country', None),
u'date_released': ('datetime', None),
u'date_recorded': ('datetime', None),
u'date_written': ('datetime', None),
# From Video core
u'encoder': ('encoder', None),
u'bps': ('bitrate', matroska_bps_to_bitrate),
u'part_number': ('trackno', int),
u'total_parts': ('trackof', int),
u'copyright': ('copyright', None),
u'genre': ('genre', None),
u'actor': ('actors', None),
u'written_by': ('writer', None),
u'producer': ('producer', None),
u'production_studio': ('studio', None),
u'law_rating': ('rating', None),
u'summary': ('summary', None),
u'synopsis': ('synopsis', None),
}
class EbmlEntity:
"""
This is class that is responsible to handle one Ebml entity as described in
the Matroska/Ebml spec
"""
def __init__(self, inbuf):
# Compute the EBML id
# Set the CRC len to zero
self.crc_len = 0
# Now loop until we find an entity without CRC
try:
self.build_entity(inbuf)
except IndexError:
raise ParseError()
while self.get_id() == MATROSKA_CRC32_ID:
self.crc_len += self.get_total_len()
inbuf = inbuf[self.get_total_len():]
self.build_entity(inbuf)
def build_entity(self, inbuf):
self.compute_id(inbuf)
if self.id_len == 0:
log.error(u'EBML entity not found, bad file format')
raise ParseError()
self.entity_len, self.len_size = self.compute_len(inbuf[self.id_len:])
self.entity_data = inbuf[self.get_header_len() : self.get_total_len()]
self.ebml_length = self.entity_len
self.entity_len = min(len(self.entity_data), self.entity_len)
# if the data size is 8 or less, it could be a numeric value
self.value = 0
if self.entity_len <= 8:
for pos, shift in zip(range(self.entity_len), range((self.entity_len - 1) * 8, -1, -8)):
self.value |= ord(self.entity_data[pos]) << shift
def add_data(self, data):
maxlen = self.ebml_length - len(self.entity_data)
if maxlen <= 0:
return
self.entity_data += data[:maxlen]
self.entity_len = len(self.entity_data)
def compute_id(self, inbuf):
self.id_len = 0
if len(inbuf) < 1:
return 0
first = ord(inbuf[0])
if first & 0x80:
self.id_len = 1
self.entity_id = first
elif first & 0x40:
if len(inbuf) < 2:
return 0
self.id_len = 2
self.entity_id = ord(inbuf[0]) << 8 | ord(inbuf[1])
elif first & 0x20:
if len(inbuf) < 3:
return 0
self.id_len = 3
self.entity_id = (ord(inbuf[0]) << 16) | (ord(inbuf[1]) << 8) | \
(ord(inbuf[2]))
elif first & 0x10:
if len(inbuf) < 4:
return 0
self.id_len = 4
self.entity_id = (ord(inbuf[0]) << 24) | (ord(inbuf[1]) << 16) | \
(ord(inbuf[2]) << 8) | (ord(inbuf[3]))
self.entity_str = inbuf[0:self.id_len]
def compute_len(self, inbuf):
if not inbuf:
return 0, 0
i = num_ffs = 0
len_mask = 0x80
len = ord(inbuf[0])
while not len & len_mask:
i += 1
len_mask >>= 1
if i >= 8:
return 0, 0
len &= len_mask - 1
if len == len_mask - 1:
num_ffs += 1
for p in range(i):
len = (len << 8) | ord(inbuf[p + 1])
if len & 0xff == 0xff:
num_ffs += 1
if num_ffs == i + 1:
len = 0
return len, i + 1
def get_crc_len(self):
return self.crc_len
def get_value(self):
return self.value
def get_float_value(self):
if len(self.entity_data) == 4:
return unpack('!f', self.entity_data)[0]
elif len(self.entity_data) == 8:
return unpack('!d', self.entity_data)[0]
return 0.0
def get_data(self):
return self.entity_data
def get_utf8(self):
return unicode(self.entity_data, 'utf-8', 'replace')
def get_str(self):
return unicode(self.entity_data, 'ascii', 'replace')
def get_id(self):
return self.entity_id
def get_str_id(self):
return self.entity_str
def get_len(self):
return self.entity_len
def get_total_len(self):
return self.entity_len + self.id_len + self.len_size
def get_header_len(self):
return self.id_len + self.len_size
class Matroska(core.AVContainer):
"""
Matroska video and audio parser. If at least one video stream is
detected it will set the type to MEDIA_AV.
"""
def __init__(self, file):
core.AVContainer.__init__(self)
self.samplerate = 1
self.file = file
# Read enough that we're likely to get the full seekhead (FIXME: kludge)
buffer = file.read(2000)
if len(buffer) == 0:
# Regular File end
raise ParseError()
# Check the Matroska header
header = EbmlEntity(buffer)
if header.get_id() != MATROSKA_HEADER_ID:
raise ParseError()
log.debug(u'HEADER ID found %08X' % header.get_id())
self.mime = 'video/x-matroska'
self.type = 'Matroska'
self.has_idx = False
self.objects_by_uid = {}
# Now get the segment
self.segment = segment = EbmlEntity(buffer[header.get_total_len():])
# Record file offset of segment data for seekheads
self.segment.offset = header.get_total_len() + segment.get_header_len()
if segment.get_id() != MATROSKA_SEGMENT_ID:
log.debug(u'SEGMENT ID not found %08X' % segment.get_id())
return
log.debug(u'SEGMENT ID found %08X' % segment.get_id())
try:
for elem in self.process_one_level(segment):
if elem.get_id() == MATROSKA_SEEKHEAD_ID:
self.process_elem(elem)
except ParseError:
pass
if not self.has_idx:
log.warning(u'File has no index')
self._set('corrupt', True)
def process_elem(self, elem):
elem_id = elem.get_id()
log.debug(u'BEGIN: process element %r' % hex(elem_id))
if elem_id == MATROSKA_SEGMENT_INFO_ID:
duration = 0
scalecode = 1000000.0
for ielem in self.process_one_level(elem):
ielem_id = ielem.get_id()
if ielem_id == MATROSKA_TIMECODESCALE_ID:
scalecode = ielem.get_value()
elif ielem_id == MATROSKA_DURATION_ID:
duration = ielem.get_float_value()
elif ielem_id == MATROSKA_TITLE_ID:
self.title = ielem.get_utf8()
elif ielem_id == MATROSKA_DATE_UTC_ID:
timestamp = unpack('!q', ielem.get_data())[0] / 10.0 ** 9
# Date is offset 2001-01-01 00:00:00 (timestamp 978307200.0)
self.timestamp = int(timestamp + 978307200)
self.length = duration * scalecode / 1000000000.0
elif elem_id == MATROSKA_TRACKS_ID:
self.process_tracks(elem)
elif elem_id == MATROSKA_CHAPTERS_ID:
self.process_chapters(elem)
elif elem_id == MATROSKA_ATTACHMENTS_ID:
self.process_attachments(elem)
elif elem_id == MATROSKA_SEEKHEAD_ID:
self.process_seekhead(elem)
elif elem_id == MATROSKA_TAGS_ID:
self.process_tags(elem)
elif elem_id == MATROSKA_CUES_ID:
self.has_idx = True
log.debug(u'END: process element %r' % hex(elem_id))
return True
def process_seekhead(self, elem):
for seek_elem in self.process_one_level(elem):
if seek_elem.get_id() != MATROSKA_SEEK_ID:
continue
for sub_elem in self.process_one_level(seek_elem):
if sub_elem.get_id() == MATROSKA_SEEKID_ID:
if sub_elem.get_value() == MATROSKA_CLUSTER_ID:
# Not interested in these.
return
elif sub_elem.get_id() == MATROSKA_SEEK_POSITION_ID:
self.file.seek(self.segment.offset + sub_elem.get_value())
buffer = self.file.read(100)
try:
elem = EbmlEntity(buffer)
except ParseError:
continue
# Fetch all data necessary for this element.
elem.add_data(self.file.read(elem.ebml_length))
self.process_elem(elem)
def process_tracks(self, tracks):
tracksbuf = tracks.get_data()
index = 0
while index < tracks.get_len():
trackelem = EbmlEntity(tracksbuf[index:])
log.debug (u'ELEMENT %X found' % trackelem.get_id())
self.process_track(trackelem)
index += trackelem.get_total_len() + trackelem.get_crc_len()
def process_one_level(self, item):
buf = item.get_data()
index = 0
while index < item.get_len():
if len(buf[index:]) == 0:
break
elem = EbmlEntity(buf[index:])
yield elem
index += elem.get_total_len() + elem.get_crc_len()
def set_track_defaults(self, track):
track.language = 'eng'
def process_track(self, track):
# Collapse generator into a list since we need to iterate over it
# twice.
elements = [x for x in self.process_one_level(track)]
track_type = [x.get_value() for x in elements if x.get_id() == MATROSKA_TRACK_TYPE_ID]
if not track_type:
log.debug(u'Bad track: no type id found')
return
track_type = track_type[0]
track = None
if track_type == MATROSKA_VIDEO_TRACK:
log.debug(u'Video track found')
track = self.process_video_track(elements)
elif track_type == MATROSKA_AUDIO_TRACK:
log.debug(u'Audio track found')
track = self.process_audio_track(elements)
elif track_type == MATROSKA_SUBTITLES_TRACK:
log.debug(u'Subtitle track found')
track = core.Subtitle()
self.set_track_defaults(track)
track.id = len(self.subtitles)
self.subtitles.append(track)
for elem in elements:
self.process_track_common(elem, track)
def process_track_common(self, elem, track):
elem_id = elem.get_id()
if elem_id == MATROSKA_TRACK_LANGUAGE_ID:
track.language = elem.get_str()
log.debug(u'Track language found: %r' % track.language)
elif elem_id == MATROSKA_NAME_ID:
track.title = elem.get_utf8()
elif elem_id == MATROSKA_TRACK_NUMBER_ID:
track.trackno = elem.get_value()
elif elem_id == MATROSKA_TRACK_FLAG_ENABLED_ID:
track.enabled = bool(elem.get_value())
elif elem_id == MATROSKA_TRACK_FLAG_DEFAULT_ID:
track.default = bool(elem.get_value())
elif elem_id == MATROSKA_CODEC_ID:
track.codec = elem.get_str()
elif elem_id == MATROSKA_CODEC_PRIVATE_ID:
track.codec_private = elem.get_data()
elif elem_id == MATROSKA_TRACK_UID_ID:
self.objects_by_uid[elem.get_value()] = track
def process_video_track(self, elements):
track = core.VideoStream()
# Defaults
track.codec = u'Unknown'
track.fps = 0
self.set_track_defaults(track)
for elem in elements:
elem_id = elem.get_id()
if elem_id == MATROSKA_CODEC_ID:
track.codec = elem.get_str()
elif elem_id == MATROSKA_FRAME_DURATION_ID:
try:
track.fps = 1 / (pow(10, -9) * (elem.get_value()))
except ZeroDivisionError:
pass
elif elem_id == MATROSKA_VIDEO_SETTINGS_ID:
d_width = d_height = None
for settings_elem in self.process_one_level(elem):
settings_elem_id = settings_elem.get_id()
if settings_elem_id == MATROSKA_VIDEO_WIDTH_ID:
track.width = settings_elem.get_value()
elif settings_elem_id == MATROSKA_VIDEO_HEIGHT_ID:
track.height = settings_elem.get_value()
elif settings_elem_id == MATROSKA_VIDEO_DISPLAY_WIDTH_ID:
d_width = settings_elem.get_value()
elif settings_elem_id == MATROSKA_VIDEO_DISPLAY_HEIGHT_ID:
d_height = settings_elem.get_value()
elif settings_elem_id == MATROSKA_VIDEO_INTERLACED_ID:
value = int(settings_elem.get_value())
self._set('interlaced', value)
if None not in [d_width, d_height]:
track.aspect = float(d_width) / d_height
else:
self.process_track_common(elem, track)
# convert codec information
# http://haali.cs.msu.ru/mkv/codecs.pdf
if track.codec in FOURCCMap:
track.codec = FOURCCMap[track.codec]
elif '/' in track.codec and track.codec.split('/')[0] + '/' in FOURCCMap:
track.codec = FOURCCMap[track.codec.split('/')[0] + '/']
elif track.codec.endswith('FOURCC') and len(track.codec_private or '') == 40:
track.codec = track.codec_private[16:20]
elif track.codec.startswith('V_REAL/'):
track.codec = track.codec[7:]
elif track.codec.startswith('V_'):
# FIXME: add more video codecs here
track.codec = track.codec[2:]
track.id = len(self.video)
self.video.append(track)
return track
def process_audio_track(self, elements):
track = core.AudioStream()
track.codec = u'Unknown'
self.set_track_defaults(track)
for elem in elements:
elem_id = elem.get_id()
if elem_id == MATROSKA_CODEC_ID:
track.codec = elem.get_str()
elif elem_id == MATROSKA_AUDIO_SETTINGS_ID:
for settings_elem in self.process_one_level(elem):
settings_elem_id = settings_elem.get_id()
if settings_elem_id == MATROSKA_AUDIO_SAMPLERATE_ID:
track.samplerate = settings_elem.get_float_value()
elif settings_elem_id == MATROSKA_AUDIO_CHANNELS_ID:
track.channels = settings_elem.get_value()
else:
self.process_track_common(elem, track)
if track.codec in FOURCCMap:
track.codec = FOURCCMap[track.codec]
elif '/' in track.codec and track.codec.split('/')[0] + '/' in FOURCCMap:
track.codec = FOURCCMap[track.codec.split('/')[0] + '/']
elif track.codec.startswith('A_'):
track.codec = track.codec[2:]
track.id = len(self.audio)
self.audio.append(track)
return track
def process_chapters(self, chapters):
elements = self.process_one_level(chapters)
for elem in elements:
if elem.get_id() == MATROSKA_EDITION_ENTRY_ID:
buf = elem.get_data()
index = 0
while index < elem.get_len():
sub_elem = EbmlEntity(buf[index:])
if sub_elem.get_id() == MATROSKA_CHAPTER_ATOM_ID:
self.process_chapter_atom(sub_elem)
index += sub_elem.get_total_len() + sub_elem.get_crc_len()
def process_chapter_atom(self, atom):
elements = self.process_one_level(atom)
chap = core.Chapter()
for elem in elements:
elem_id = elem.get_id()
if elem_id == MATROSKA_CHAPTER_TIME_START_ID:
# Scale timecode to seconds (float)
chap.pos = elem.get_value() / 1000000 / 1000.0
elif elem_id == MATROSKA_CHAPTER_FLAG_ENABLED_ID:
chap.enabled = elem.get_value()
elif elem_id == MATROSKA_CHAPTER_DISPLAY_ID:
# Matroska supports multiple (chapter name, language) pairs for
# each chapter, so chapter names can be internationalized. This
# logic will only take the last one in the list.
for display_elem in self.process_one_level(elem):
if display_elem.get_id() == MATROSKA_CHAPTER_STRING_ID:
chap.name = display_elem.get_utf8()
elif elem_id == MATROSKA_CHAPTER_UID_ID:
self.objects_by_uid[elem.get_value()] = chap
log.debug(u'Chapter %r found', chap.name)
chap.id = len(self.chapters)
self.chapters.append(chap)
def process_attachments(self, attachments):
buf = attachments.get_data()
index = 0
while index < attachments.get_len():
elem = EbmlEntity(buf[index:])
if elem.get_id() == MATROSKA_ATTACHED_FILE_ID:
self.process_attachment(elem)
index += elem.get_total_len() + elem.get_crc_len()
def process_attachment(self, attachment):
elements = self.process_one_level(attachment)
name = desc = mimetype = ""
data = None
for elem in elements:
elem_id = elem.get_id()
if elem_id == MATROSKA_FILE_NAME_ID:
name = elem.get_utf8()
elif elem_id == MATROSKA_FILE_DESC_ID:
desc = elem.get_utf8()
elif elem_id == MATROSKA_FILE_MIME_TYPE_ID:
mimetype = elem.get_data()
elif elem_id == MATROSKA_FILE_DATA_ID:
data = elem.get_data()
# Right now we only support attachments that could be cover images.
# Make a guess to see if this attachment is a cover image.
if mimetype.startswith("image/") and u"cover" in (name + desc).lower() and data:
self.thumbnail = data
log.debug(u'Attachment %r found' % name)
def process_tags(self, tags):
# Tags spec: http://www.matroska.org/technical/specs/tagging/index.html
# Iterate over Tags children. Tags element children is a
# Tag element (whose children are SimpleTags) and a Targets element
# whose children specific what objects the tags apply to.
for tag_elem in self.process_one_level(tags):
# Start a new dict to hold all SimpleTag elements.
tags_dict = core.Tags()
# A list of target uids this tags dict applies too. If empty,
# tags are global.
targets = []
for sub_elem in self.process_one_level(tag_elem):
if sub_elem.get_id() == MATROSKA_SIMPLE_TAG_ID:
self.process_simple_tag(sub_elem, tags_dict)
elif sub_elem.get_id() == MATROSKA_TARGETS_ID:
# Targets element: if there is no uid child (track uid,
# chapter uid, etc.) then the tags dict applies to the
# whole file (top-level Media object).
for target_elem in self.process_one_level(sub_elem):
target_elem_id = target_elem.get_id()
if target_elem_id in (MATRSOKA_TAGS_TRACK_UID_ID, MATRSOKA_TAGS_EDITION_UID_ID,
MATRSOKA_TAGS_CHAPTER_UID_ID, MATRSOKA_TAGS_ATTACHMENT_UID_ID):
targets.append(target_elem.get_value())
elif target_elem_id == MATROSKA_TARGET_TYPE_VALUE_ID:
# Target types not supported for now. (Unclear how this
# would fit with kaa.metadata.)
pass
if targets:
# Assign tags to all listed uids
for target in targets:
try:
self.objects_by_uid[target].tags.update(tags_dict)
self.tags_to_attributes(self.objects_by_uid[target], tags_dict)
except KeyError:
log.warning(u'Tags assigned to unknown/unsupported target uid %d', target)
else:
self.tags.update(tags_dict)
self.tags_to_attributes(self, tags_dict)
def process_simple_tag(self, simple_tag_elem, tags_dict):
"""
Returns a dict representing the Tag element.
"""
name = lang = value = children = None
binary = False
for elem in self.process_one_level(simple_tag_elem):
elem_id = elem.get_id()
if elem_id == MATROSKA_TAG_NAME_ID:
name = elem.get_utf8().lower()
elif elem_id == MATROSKA_TAG_STRING_ID:
value = elem.get_utf8()
elif elem_id == MATROSKA_TAG_BINARY_ID:
value = elem.get_data()
binary = True
elif elem_id == MATROSKA_TAG_LANGUAGE_ID:
lang = elem.get_utf8()
elif elem_id == MATROSKA_SIMPLE_TAG_ID:
if children is None:
children = core.Tags()
self.process_simple_tag(elem, children)
if children:
# Convert ourselves to a Tags object.
children.value = value
children.langcode = lang
value = children
else:
if name.startswith('date_'):
# Try to convert date to a datetime object.
value = matroska_date_to_datetime(value)
value = core.Tag(value, lang, binary)
if name in tags_dict:
# Multiple items of this tag name.
if not isinstance(tags_dict[name], list):
# Convert to a list
tags_dict[name] = [tags_dict[name]]
# Append to list
tags_dict[name].append(value)
else:
tags_dict[name] = value
def tags_to_attributes(self, obj, tags):
# Convert tags to core attributes.
for name, tag in tags.items():
if isinstance(tag, dict):
# Nested tags dict, recurse.
self.tags_to_attributes(obj, tag)
continue
elif name not in TAGS_MAP:
continue
attr, filter = TAGS_MAP[name]
if attr not in obj._keys and attr not in self._keys:
# Tag is not in any core attribute for this object or global,
# so skip.
continue
# Pull value out of Tag object or list of Tag objects.
value = [item.value for item in tag] if isinstance(tag, list) else tag.value
if filter:
try:
value = [filter(item) for item in value] if isinstance(value, list) else filter(value)
except Exception, e:
log.warning(u'Failed to convert tag to core attribute: %r', e)
# Special handling for tv series recordings. The 'title' tag
# can be used for both the series and the episode name. The
# same is true for trackno which may refer to the season
# and the episode number. Therefore, if we find these
# attributes already set we try some guessing.
if attr == 'trackno' and getattr(self, attr) is not None:
# delete trackno and save season and episode
self.season = self.trackno
self.episode = value
self.trackno = None
continue
if attr == 'title' and getattr(self, attr) is not None:
# store current value of title as series and use current
# value of title as title
self.series = self.title
if attr in obj._keys:
setattr(obj, attr, value)
else:
setattr(self, attr, value)
Parser = Matroska
Reference in New Issue Copy Permalink