mirror of
https://github.com/SickGear/SickGear.git
synced 2024-11-22 21:05:05 +00:00
647 lines
20 KiB
Python
647 lines
20 KiB
Python
#
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# Matroska parser
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# Author Julien Muchembled <jm AT jm10.no-ip.com>
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# Created: 8 june 2006
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#
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from hachoir.parser import Parser
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from hachoir.field import (FieldSet, Link,
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MissingField, ParserError,
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Enum as _Enum, String as _String,
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Float32, Float64,
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NullBits, Bits, Bit, RawBytes, Bytes,
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Int16, GenericInteger)
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from hachoir.core.endian import BIG_ENDIAN
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from hachoir.core.iso639 import ISO639_2
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from hachoir.core.tools import humanDatetime
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from hachoir.core.text_handler import textHandler, hexadecimal
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from hachoir.parser.container.ogg import XiphInt
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from datetime import datetime, timedelta
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class RawInt(GenericInteger):
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"""
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Raw integer: have to be used in BIG_ENDIAN!
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"""
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def __init__(self, parent, name, description=None):
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GenericInteger.__init__(self, parent, name, False, 8, description)
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i = GenericInteger.createValue(self)
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if i == 0:
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raise ParserError('Invalid integer length!')
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while i < 0x80:
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self._size += 8
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i <<= 1
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class Unsigned(RawInt):
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def __init__(self, parent, name, description=None):
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RawInt.__init__(self, parent, name, description)
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def hasValue(self):
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return True
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def createValue(self):
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header = 1 << self._size // 8 * 7
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value = RawInt.createValue(self) - header
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if value + 1 == header:
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return None
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return value
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class Signed(Unsigned):
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def createValue(self):
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header = 1 << self._size // 8 * 7 - 1
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value = RawInt.createValue(self) - 3 * header + 1
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if value == header:
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return None
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return value
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def Enum(parent, enum):
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return _Enum(GenericInteger(parent, 'enum', False, parent['size'].value * 8), enum)
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def Bool(parent):
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return textHandler(GenericInteger(parent, 'bool', False, parent['size'].value * 8),
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lambda chunk: str(chunk.value != 0))
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def UInt(parent):
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return GenericInteger(parent, 'unsigned', False, parent['size'].value * 8)
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def SInt(parent):
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return GenericInteger(parent, 'signed', True, parent['size'].value * 8)
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def String(parent):
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return _String(parent, 'string', parent['size'].value, charset="ASCII", strip="\0")
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def EnumString(parent, enum):
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return _Enum(String(parent), enum)
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def Binary(parent):
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return RawBytes(parent, 'binary', parent['size'].value)
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class AttachedFile(Bytes):
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def __init__(self, parent):
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Bytes.__init__(self, parent, 'file', parent['size'].value, None)
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def _getFilename(self):
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if not hasattr(self, "_filename"):
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try:
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self._filename = self["../../FileName/unicode"].value
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except MissingField:
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self._filename = None
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return self._filename
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def createDescription(self):
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filename = self._getFilename()
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if filename:
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return 'File "%s"' % filename
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return "('Filename' entry not found)"
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def _createInputStream(self, **args):
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tags = args.setdefault("tags", [])
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try:
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tags.append(("mime", self["../../FileMimeType/string"].value))
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except MissingField:
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pass
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filename = self._getFilename()
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if filename:
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tags.append(("filename", filename))
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return Bytes._createInputStream(self, **args)
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def UTF8(parent):
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return _String(parent, 'unicode', parent['size'].value, charset='UTF-8')
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def Float(parent):
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size = parent['size'].value
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if size == 4:
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return Float32(parent, 'float')
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elif size == 8:
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return Float64(parent, 'double')
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else:
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return RawBytes(parent, 'INVALID_FLOAT', size)
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TIMESTAMP_T0 = datetime(2001, 1, 1)
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def dateToDatetime(value):
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return TIMESTAMP_T0 + timedelta(microseconds=value // 1000)
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def dateToString(field):
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return humanDatetime(dateToDatetime(field.value))
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def Date(parent):
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return textHandler(GenericInteger(parent, 'date', True, parent['size'].value * 8),
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dateToString)
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def SeekID(parent):
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return textHandler(GenericInteger(parent, 'binary', False, parent['size'].value * 8),
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lambda chunk: segment.get(chunk.value, (hexadecimal(chunk),))[0])
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def CueClusterPosition(parent):
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class Cluster(Link):
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def createValue(self):
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parent = self.parent
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segment = parent['.....']
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pos = parent['unsigned'].value * 8 + segment[2].address
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return segment.getFieldByAddress(pos, feed=False)
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return Cluster(parent, 'cluster')
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def CueTrackPositions(parent):
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class Block(Link):
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def createValue(self):
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parent = self.parent
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time = parent['../CueTime/unsigned'].value
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track = parent['CueTrack/unsigned'].value
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cluster = parent['CueClusterPosition/cluster'].value
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time -= cluster['Timecode/unsigned'].value
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for field in cluster:
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if field.name.startswith('BlockGroup['):
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for path in ('Block/block', 'SimpleBlock'):
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try:
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block = field[path]
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if block['track'].value == track and \
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block['timecode'].value == time:
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return field
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except MissingField:
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pass
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parent.error('Cue point not found')
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return self
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return Block(parent, 'block')
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class Lace(FieldSet):
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def __init__(self, parent, lacing, size):
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self.n_frames = parent['n_frames'].value
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self.createFields = (
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self.parseXiph, self.parseFixed, self.parseEBML)[lacing]
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FieldSet.__init__(self, parent, 'Lace', size=size * 8)
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def parseXiph(self):
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for i in range(self.n_frames):
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yield XiphInt(self, 'size[]')
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for i in range(self.n_frames):
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yield RawBytes(self, 'frame[]', self['size[' + str(i) + ']'].value)
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yield RawBytes(self, 'frame[]', (self._size - self.current_size) // 8)
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def parseEBML(self):
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yield Unsigned(self, 'size')
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for i in range(1, self.n_frames):
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yield Signed(self, 'dsize[]')
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size = self['size'].value
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yield RawBytes(self, 'frame[]', size)
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for i in range(self.n_frames - 1):
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size += self['dsize[' + str(i) + ']'].value
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yield RawBytes(self, 'frame[]', size)
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yield RawBytes(self, 'frame[]', (self._size - self.current_size) // 8)
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def parseFixed(self):
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n = self.n_frames + 1
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size = self._size // 8 // n
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for i in range(n):
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yield RawBytes(self, 'frame[]', size)
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class Block(FieldSet):
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def __init__(self, parent):
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FieldSet.__init__(self, parent, 'block')
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self._size = 8 * parent['size'].value
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def lacing(self):
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return _Enum(Bits(self, 'lacing', 2), ['none', 'Xiph', 'fixed', 'EBML'])
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def createFields(self):
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yield Unsigned(self, 'track')
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yield Int16(self, 'timecode')
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if self.parent._name == 'Block':
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yield NullBits(self, 'reserved[]', 4)
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yield Bit(self, 'invisible')
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yield self.lacing()
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yield NullBits(self, 'reserved[]', 1)
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elif self.parent._name.startswith('SimpleBlock'):
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yield Bit(self, 'keyframe')
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yield NullBits(self, 'reserved', 3)
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yield Bit(self, 'invisible')
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yield self.lacing()
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yield Bit(self, 'discardable')
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else:
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yield NullBits(self, 'reserved', 8)
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return
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size = (self._size - self.current_size) // 8
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lacing = self['lacing'].value
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if lacing:
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yield textHandler(GenericInteger(self, 'n_frames', False, 8),
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lambda chunk: str(chunk.value + 1))
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yield Lace(self, lacing - 1, size - 1)
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else:
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yield RawBytes(self, 'frame', size)
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ebml = {
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0x1A45DFA3: ('EBML[]', {
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0x4286: ('EBMLVersion', UInt),
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0x42F7: ('EBMLReadVersion', UInt),
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0x42F2: ('EBMLMaxIDLength', UInt),
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0x42F3: ('EBMLMaxSizeLength', UInt),
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0x4282: ('DocType', String),
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0x4287: ('DocTypeVersion', UInt),
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0x4285: ('DocTypeReadVersion', UInt)
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})
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}
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signature = {
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0x7E8A: ('SignatureAlgo', UInt),
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0x7E9A: ('SignatureHash', UInt),
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0x7EA5: ('SignaturePublicKey', Binary),
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0x7EB5: ('Signature', Binary),
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0x7E5B: ('SignatureElements', {
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0x7E7B: ('SignatureElementList[]', {
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0x6532: ('SignedElement[]', Binary)
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})
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})
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}
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chapter_atom = {
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0x73C4: ('ChapterUID', UInt),
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0x91: ('ChapterTimeStart', UInt),
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0x92: ('ChapterTimeEnd', UInt),
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0x98: ('ChapterFlagHidden', Bool),
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0x4598: ('ChapterFlagEnabled', Bool),
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0x6E67: ('ChapterSegmentUID', Binary),
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0x6EBC: ('ChapterSegmentEditionUID', Binary),
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0x63C3: ('ChapterPhysicalEquiv', UInt),
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0x8F: ('ChapterTrack', {
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0x89: ('ChapterTrackNumber[]', UInt)
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}),
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0x80: ('ChapterDisplay[]', {
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0x85: ('ChapString', UTF8),
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0x437C: ('ChapLanguage[]', String),
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0x437E: ('ChapCountry[]', String)
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}),
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0x6944: ('ChapProcess[]', {
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0x6955: ('ChapProcessCodecID', UInt),
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0x450D: ('ChapProcessPrivate', Binary),
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0x6911: ('ChapProcessCommand[]', {
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0x6922: ('ChapProcessTime', UInt),
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0x6933: ('ChapProcessData', Binary)
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})
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})
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}
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simple_tag = {
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0x45A3: ('TagName', UTF8),
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0x447A: ('TagLanguage', String),
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0x44B4: ('TagDefault', Bool), # 0x4484
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0x4487: ('TagString', UTF8),
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0x4485: ('TagBinary', Binary)
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}
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segment_seek = {
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0x4DBB: ('Seek[]', {
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0x53AB: ('SeekID', SeekID),
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0x53AC: ('SeekPosition', UInt)
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})
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}
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segment_info = {
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0x73A4: ('SegmentUID', Binary),
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0x7384: ('SegmentFilename', UTF8),
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0x3CB923: ('PrevUID', Binary),
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0x3C83AB: ('PrevFilename', UTF8),
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0x3EB923: ('NextUID', Binary),
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0x3E83BB: ('NextFilename', UTF8),
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0x4444: ('SegmentFamily[]', Binary),
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0x6924: ('ChapterTranslate[]', {
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0x69FC: ('ChapterTranslateEditionUID[]', UInt),
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0x69BF: ('ChapterTranslateCodec', UInt),
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0x69A5: ('ChapterTranslateID', Binary)
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}),
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0x2AD7B1: ('TimecodeScale', UInt),
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0x4489: ('Duration', Float),
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0x4461: ('DateUTC', Date),
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0x7BA9: ('Title', UTF8),
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0x4D80: ('MuxingApp', UTF8),
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0x5741: ('WritingApp', UTF8)
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}
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segment_clusters = {
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0xE7: ('Timecode', UInt),
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0x5854: ('SilentTracks', {
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0x58D7: ('SilentTrackNumber[]', UInt)
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}),
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0xA7: ('Position', UInt),
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0xAB: ('PrevSize', UInt),
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0xA0: ('BlockGroup[]', {
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0xA1: ('Block', Block),
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0xA2: ('BlockVirtual[]', Block),
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0x75A1: ('BlockAdditions', {
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0xA6: ('BlockMore[]', {
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0xEE: ('BlockAddID', UInt),
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0xA5: ('BlockAdditional', Binary)
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})
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}),
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0x9B: ('BlockDuration', UInt),
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0xFA: ('ReferencePriority', UInt),
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0xFB: ('ReferenceBlock[]', SInt),
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0xFD: ('ReferenceVirtual', SInt),
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0xA4: ('CodecState', Binary),
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0x8E: ('Slices[]', {
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0xE8: ('TimeSlice[]', {
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0xCC: ('LaceNumber', UInt),
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0xCD: ('FrameNumber', UInt),
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0xCB: ('BlockAdditionID', UInt),
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0xCE: ('Delay', UInt),
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0xCF: ('Duration', UInt)
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})
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})
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}),
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0xA3: ('SimpleBlock[]', Block)
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}
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def stereo_mode(parent):
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return Enum(parent, ['mono', 'right eye', 'left eye', 'both eyes'])
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def display_unit(parent):
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return Enum(parent, ['pixels', 'centimeters', 'inches'])
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def aspect_ratio_type(parent):
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return Enum(parent, ['free resizing', 'keep aspect ratio', 'fixed'])
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tracks_video = {
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0x9A: ('FlagInterlaced', Bool),
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0x53B8: ('StereoMode', stereo_mode),
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0xB0: ('PixelWidth', UInt),
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0xBA: ('PixelHeight', UInt),
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0x54AA: ('PixelCropBottom', UInt),
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0x54BB: ('PixelCropTop', UInt),
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0x54CC: ('PixelCropLeft', UInt),
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0x54DD: ('PixelCropRight', UInt),
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0x54B0: ('DisplayWidth', UInt),
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0x54BA: ('DisplayHeight', UInt),
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0x54B2: ('DisplayUnit', display_unit),
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0x54B3: ('AspectRatioType', aspect_ratio_type),
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0x2EB524: ('ColourSpace', Binary),
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0x2FB523: ('GammaValue', Float)
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}
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tracks_audio = {
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0xB5: ('SamplingFrequency', Float),
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0x78B5: ('OutputSamplingFrequency', Float),
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0x9F: ('Channels', UInt),
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0x7D7B: ('ChannelPositions', Binary),
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0x6264: ('BitDepth', UInt)
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}
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tracks_content_encodings = {
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0x6240: ('ContentEncoding[]', {
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0x5031: ('ContentEncodingOrder', UInt),
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0x5032: ('ContentEncodingScope', UInt),
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0x5033: ('ContentEncodingType', UInt),
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0x5034: ('ContentCompression', {
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0x4254: ('ContentCompAlgo', UInt),
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0x4255: ('ContentCompSettings', Binary)
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}),
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0x5035: ('ContentEncryption', {
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0x47e1: ('ContentEncAlgo', UInt),
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0x47e2: ('ContentEncKeyID', Binary),
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0x47e3: ('ContentSignature', Binary),
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0x47e4: ('ContentSigKeyID', Binary),
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0x47e5: ('ContentSigAlgo', UInt),
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0x47e6: ('ContentSigHashAlgo', UInt),
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})
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})
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}
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segment_tracks = {
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0xAE: ('TrackEntry[]', {
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0xD7: ('TrackNumber', UInt),
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0x73C5: ('TrackUID', UInt),
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0x83: ('TrackType', lambda parent: Enum(parent, {
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0x01: 'video',
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0x02: 'audio',
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0x03: 'complex',
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0x10: 'logo',
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0x11: 'subtitle',
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0x12: 'buttons',
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0x20: 'control'
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})),
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0xB9: ('FlagEnabled', Bool),
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0x88: ('FlagDefault', Bool),
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0x55AA: ('FlagForced[]', Bool),
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0x9C: ('FlagLacing', Bool),
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0x6DE7: ('MinCache', UInt),
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0x6DF8: ('MaxCache', UInt),
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0x23E383: ('DefaultDuration', UInt),
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0x23314F: ('TrackTimecodeScale', Float),
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0x537F: ('TrackOffset', SInt),
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0x55EE: ('MaxBlockAdditionID', UInt),
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0x536E: ('Name', UTF8),
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0x22B59C: ('Language', lambda parent: EnumString(parent, ISO639_2)),
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0x86: ('CodecID', String),
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0x63A2: ('CodecPrivate', Binary),
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0x258688: ('CodecName', UTF8),
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0x7446: ('AttachmentLink', UInt),
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0x3A9697: ('CodecSettings', UTF8),
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0x3B4040: ('CodecInfoURL[]', String),
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0x26B240: ('CodecDownloadURL[]', String),
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0xAA: ('CodecDecodeAll', Bool),
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0x6FAB: ('TrackOverlay[]', UInt),
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0x6624: ('TrackTranslate[]', {
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0x66FC: ('TrackTranslateEditionUID[]', UInt),
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0x66BF: ('TrackTranslateCodec', UInt),
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0x66A5: ('TrackTranslateTrackID', Binary)
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}),
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0xE0: ('Video', tracks_video),
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0xE1: ('Audio', tracks_audio),
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0x6d80: ('ContentEncodings', tracks_content_encodings)
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})
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}
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segment_cues = {
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0xBB: ('CuePoint[]', {
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0xB3: ('CueTime', UInt),
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0xB7: ('CueTrackPositions[]', CueTrackPositions, {
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0xF7: ('CueTrack', UInt),
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0xF1: ('CueClusterPosition', CueClusterPosition, UInt),
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0x5378: ('CueBlockNumber', UInt),
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0xEA: ('CueCodecState', UInt),
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0xDB: ('CueReference[]', {
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0x96: ('CueRefTime', UInt),
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0x97: ('CueRefCluster', UInt),
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0x535F: ('CueRefNumber', UInt),
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0xEB: ('CueRefCodecState', UInt)
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})
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})
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})
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}
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segment_attachments = {
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0x61A7: ('AttachedFile[]', {
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0x467E: ('FileDescription', UTF8),
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|
0x466E: ('FileName', UTF8),
|
|
0x4660: ('FileMimeType', String),
|
|
0x465C: ('FileData', AttachedFile),
|
|
0x46AE: ('FileUID', UInt),
|
|
0x4675: ('FileReferral', Binary)
|
|
})
|
|
}
|
|
|
|
segment_chapters = {
|
|
0x45B9: ('EditionEntry[]', {
|
|
0x45BC: ('EditionUID', UInt),
|
|
0x45BD: ('EditionFlagHidden', Bool),
|
|
0x45DB: ('EditionFlagDefault', Bool),
|
|
0x45DD: ('EditionFlagOrdered', Bool),
|
|
0xB6: ('ChapterAtom[]', chapter_atom)
|
|
})
|
|
}
|
|
|
|
segment_tags = {
|
|
0x7373: ('Tag[]', {
|
|
0x63C0: ('Targets', {
|
|
0x68CA: ('TargetTypeValue', UInt),
|
|
0x63CA: ('TargetType', String),
|
|
0x63C5: ('TrackUID[]', UInt),
|
|
0x63C9: ('EditionUID[]', UInt),
|
|
0x63C4: ('ChapterUID[]', UInt),
|
|
0x63C6: ('AttachmentUID[]', UInt)
|
|
}),
|
|
0x67C8: ('SimpleTag[]', simple_tag)
|
|
})
|
|
}
|
|
|
|
segment = {
|
|
0x114D9B74: ('SeekHead[]', segment_seek),
|
|
0x1549A966: ('Info[]', segment_info),
|
|
0x1F43B675: ('Cluster[]', segment_clusters),
|
|
0x1654AE6B: ('Tracks[]', segment_tracks),
|
|
0x1C53BB6B: ('Cues', segment_cues),
|
|
0x1941A469: ('Attachments', segment_attachments),
|
|
0x1043A770: ('Chapters', segment_chapters),
|
|
0x1254C367: ('Tags[]', segment_tags)
|
|
}
|
|
|
|
|
|
class EBML(FieldSet):
|
|
|
|
def __init__(self, parent, ids):
|
|
FieldSet.__init__(self, parent, "?[]")
|
|
|
|
# Set name
|
|
id = self['id'].value
|
|
self.val = ids.get(id)
|
|
if not self.val:
|
|
if id == 0xBF:
|
|
self.val = 'CRC-32[]', Binary
|
|
elif id == 0xEC:
|
|
self.val = 'Void[]', Binary
|
|
elif id == 0x1B538667:
|
|
self.val = 'SignatureSlot[]', signature
|
|
else:
|
|
self.val = 'Unknown[]', Binary
|
|
self._name = self.val[0]
|
|
|
|
# Compute size
|
|
size = self['size']
|
|
if size.value is not None:
|
|
self._size = size.address + size.size + size.value * 8
|
|
elif self._parent._parent:
|
|
raise ParserError(
|
|
"Unknown length (only allowed for the last Level 0 element)")
|
|
elif self._parent._size is not None:
|
|
self._size = self._parent._size - self.address
|
|
|
|
def createFields(self):
|
|
yield RawInt(self, 'id')
|
|
yield Unsigned(self, 'size')
|
|
for val in self.val[1:]:
|
|
if callable(val):
|
|
yield val(self)
|
|
else:
|
|
while not self.eof:
|
|
yield EBML(self, val)
|
|
|
|
|
|
class MkvFile(Parser):
|
|
EBML_SIGNATURE = 0x1A45DFA3
|
|
PARSER_TAGS = {
|
|
"id": "matroska",
|
|
"category": "container",
|
|
"file_ext": ("mka", "mkv", "webm"),
|
|
"mime": (
|
|
"video/x-matroska",
|
|
"audio/x-matroska",
|
|
"video/webm",
|
|
"audio/webm"),
|
|
"min_size": 5 * 8,
|
|
"magic": ((b"\x1A\x45\xDF\xA3", 0),),
|
|
"description": "Matroska multimedia container"
|
|
}
|
|
endian = BIG_ENDIAN
|
|
|
|
def _getDoctype(self):
|
|
return self[0]['DocType/string'].value
|
|
|
|
def validate(self):
|
|
if self.stream.readBits(0, 32, self.endian) != self.EBML_SIGNATURE:
|
|
return False
|
|
try:
|
|
first = self[0]
|
|
except ParserError:
|
|
return False
|
|
if 0 < self._size < first._size:
|
|
return "First chunk size is invalid"
|
|
if self._getDoctype() not in ('matroska', 'webm'):
|
|
return "Stream isn't a matroska document."
|
|
return True
|
|
|
|
def createFields(self):
|
|
hdr = EBML(self, ebml)
|
|
yield hdr
|
|
|
|
while not self.eof:
|
|
yield EBML(self, {0x18538067: ('Segment[]', segment)})
|
|
|
|
def createContentSize(self):
|
|
field = self["Segment[0]/size"]
|
|
return field.absolute_address + field.value * 8 + field.size
|
|
|
|
def createDescription(self):
|
|
if self._getDoctype() == 'webm':
|
|
return 'WebM video'
|
|
else:
|
|
return 'Matroska video'
|
|
|
|
def createMimeType(self):
|
|
if self._getDoctype() == 'webm':
|
|
return "video/webm"
|
|
else:
|
|
return "video/x-matroska"
|