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convert_xml2mkv.py
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convert_xml2mkv.py
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# Converts XML back to MKV
# Licence = MIT, 2012, Vitaly "_Vi" Shukela
# the whole parser has been retrieved from: https://github.com/vi/mkvparse
# xml > mkv: cat filename.xml | ./xml2mkv > filename.mkv
# get permission on ubuntu: chmod +x scriptname.extension
import sys
from xml.sax import make_parser, handler
from struct import pack
import binascii
if sys.version < '3':
reload(sys)
sys.setdefaultencoding('utf-8')
maybe_encode=lambda x:x
range = xrange
maybe_encode_utf8=lambda x:x
else:
def maybe_encode(x):
if type(x) == str:
return x.encode("ascii")
else:
return x
chr=lambda x:bytes((x,))
maybe_encode_utf8=lambda x:x.encode("UTF-8")
# More information can be obtained from https://matroska.org/technical/specs/notes.html#Table_Columns
# or more detailed https://github.com/Matroska-Org/ebml-specification/blob/master/specification.markdown
class EBMLTypes:
VOID = 0 # used to overwrite damaged data or reserve space within "Master" for later use
MASTER = 1 # contains 0, 1, or other EBML elements
UNSIGNED = 2 # stores positive or 0 integer. Since it is limited to 8 octets then the length is
# from 0 to 18,446,744,073,709,551,615
SIGNED = 3
TEXTA = 4
TEXTU = 5
BINARY = 6 # declares a length in octets from zero to VINTMAX
FLOAT = 7 # stores a floating-point number as defined in [@!IEEE.754.1985]
DATE = 8 # stores stores an integer in the same format as SIGNED that expresses a point in time
# referenced in nanoseconds from the precise beginning of the third millennium. Provides
# expression of time from 1708-09-11T00:12:44.854775808 UTC to 2293-04-11T11:47:16.854775807 UTC
PROCEED = 10
table_element_name = {
"EBML": (b"\x1A\x45\xDF\xA3", EBMLTypes.MASTER),
"EBMLVersion": (b"\x42\x86", EBMLTypes.UNSIGNED),
"EBMLReadVersion": (b"\x42\xF7", EBMLTypes.UNSIGNED),
"EBMLMaxIDLength": (b"\x42\xF2", EBMLTypes.UNSIGNED),
"EBMLMaxSizeLength": (b"\x42\xF3", EBMLTypes.UNSIGNED),
"DocType": (b"\x42\x82", EBMLTypes.TEXTA),
"DocTypeVersion": (b"\x42\x87", EBMLTypes.UNSIGNED),
"DocTypeReadVersion": (b"\x42\x85", EBMLTypes.UNSIGNED),
"Void": (b"\xEC", EBMLTypes.BINARY),
"CRC-32": (b"\xBF", EBMLTypes.BINARY),
"SignatureSlot": (b"\x1B\x53\x86\x67", EBMLTypes.MASTER),
"SignatureAlgo": (b"\x7E\x8A", EBMLTypes.UNSIGNED),
"SignatureHash": (b"\x7E\x9A", EBMLTypes.UNSIGNED),
"SignaturePublicKey": (b"\x7E\xA5", EBMLTypes.BINARY),
"Signature": (b"\x7E\xB5", EBMLTypes.BINARY),
"SignatureElements": (b"\x7E\x5B", EBMLTypes.MASTER),
"SignatureElementList": (b"\x7E\x7B", EBMLTypes.MASTER),
"SignedElement": (b"\x65\x32", EBMLTypes.BINARY),
"Segment": (b"\x18\x53\x80\x67", EBMLTypes.PROCEED),
"SeekHead": (b"\x11\x4D\x9B\x74", EBMLTypes.MASTER),
"Seek": (b"\x4D\xBB", EBMLTypes.MASTER),
"SeekID": (b"\x53\xAB", EBMLTypes.BINARY),
"SeekPosition": (b"\x53\xAC", EBMLTypes.UNSIGNED),
"Info": (b"\x15\x49\xA9\x66", EBMLTypes.MASTER),
"SegmentUID": (b"\x73\xA4", EBMLTypes.BINARY),
"SegmentFilename": (b"\x73\x84", EBMLTypes.TEXTU),
"PrevUID": (b"\x3C\xB9\x23", EBMLTypes.BINARY),
"PrevFilename": (b"\x3C\x83\xAB", EBMLTypes.TEXTU),
"NextUID": (b"\x3E\xB9\x23", EBMLTypes.BINARY),
"NextFilename": (b"\x3E\x83\xBB", EBMLTypes.TEXTU),
"SegmentFamily": (b"\x44\x44", EBMLTypes.BINARY),
"ChapterTranslate": (b"\x69\x24", EBMLTypes.MASTER),
"ChapterTranslateEditionUID": (b"\x69\xFC", EBMLTypes.UNSIGNED),
"ChapterTranslateCodec": (b"\x69\xBF", EBMLTypes.UNSIGNED),
"ChapterTranslateID": (b"\x69\xA5", EBMLTypes.BINARY),
"TimecodeScale": (b"\x2A\xD7\xB1", EBMLTypes.UNSIGNED),
"Duration": (b"\x44\x89", EBMLTypes.FLOAT),
"DateUTC": (b"\x44\x61", EBMLTypes.DATE),
"Title": (b"\x7B\xA9", EBMLTypes.TEXTU),
"MuxingApp": (b"\x4D\x80", EBMLTypes.TEXTU),
"WritingApp": (b"\x57\x41", EBMLTypes.TEXTU),
"Cluster": (b"\x1F\x43\xB6\x75", EBMLTypes.PROCEED),
"Timecode": (b"\xE7", EBMLTypes.UNSIGNED),
"SilentTracks": (b"\x58\x54", EBMLTypes.MASTER),
"SilentTrackNumber": (b"\x58\xD7", EBMLTypes.UNSIGNED),
"Position": (b"\xA7", EBMLTypes.UNSIGNED),
"PrevSize": (b"\xAB", EBMLTypes.UNSIGNED),
"SimpleBlock": (b"\xA3", EBMLTypes.BINARY),
"BlockGroup": (b"\xA0", EBMLTypes.MASTER),
"Block": (b"\xA1", EBMLTypes.BINARY),
"BlockVirtual": (b"\xA2", EBMLTypes.BINARY),
"BlockAdditions": (b"\x75\xA1", EBMLTypes.MASTER),
"BlockMore": (b"\xA6", EBMLTypes.MASTER),
"BlockAddID": (b"\xEE", EBMLTypes.UNSIGNED),
"BlockAdditional": (b"\xA5", EBMLTypes.BINARY),
"BlockDuration": (b"\x9B", EBMLTypes.UNSIGNED),
"ReferencePriority": (b"\xFA", EBMLTypes.UNSIGNED),
"ReferenceBlock": (b"\xFB", EBMLTypes.SIGNED),
"ReferenceVirtual": (b"\xFD", EBMLTypes.SIGNED),
"CodecState": (b"\xA4", EBMLTypes.BINARY),
"Slices": (b"\x8E", EBMLTypes.MASTER),
"TimeSlice": (b"\xE8", EBMLTypes.MASTER),
"LaceNumber": (b"\xCC", EBMLTypes.UNSIGNED),
"FrameNumber": (b"\xCD", EBMLTypes.UNSIGNED),
"BlockAdditionID": (b"\xCB", EBMLTypes.UNSIGNED),
"Delay": (b"\xCE", EBMLTypes.UNSIGNED),
"SliceDuration": (b"\xCF", EBMLTypes.UNSIGNED),
"ReferenceFrame": (b"\xC8", EBMLTypes.MASTER),
"ReferenceOffset": (b"\xC9", EBMLTypes.UNSIGNED),
"ReferenceTimeCode": (b"\xCA", EBMLTypes.UNSIGNED),
"EncryptedBlock": (b"\xAF", EBMLTypes.BINARY),
"Tracks": (b"\x16\x54\xAE\x6B", EBMLTypes.MASTER),
"TrackEntry": (b"\xAE", EBMLTypes.MASTER),
"TrackNumber": (b"\xD7", EBMLTypes.UNSIGNED),
"TrackUID": (b"\x73\xC5", EBMLTypes.UNSIGNED),
"TrackType": (b"\x83", EBMLTypes.UNSIGNED),
"FlagEnabled": (b"\xB9", EBMLTypes.UNSIGNED),
"FlagDefault": (b"\x88", EBMLTypes.UNSIGNED),
"FlagForced": (b"\x55\xAA", EBMLTypes.UNSIGNED),
"FlagLacing": (b"\x9C", EBMLTypes.UNSIGNED),
"MinCache": (b"\x6D\xE7", EBMLTypes.UNSIGNED),
"MaxCache": (b"\x6D\xF8", EBMLTypes.UNSIGNED),
"DefaultDuration": (b"\x23\xE3\x83", EBMLTypes.UNSIGNED),
"TrackTimecodeScale": (b"\x23\x31\x4F", EBMLTypes.FLOAT),
"TrackOffset": (b"\x53\x7F", EBMLTypes.SIGNED),
"MaxBlockAdditionID": (b"\x55\xEE", EBMLTypes.UNSIGNED),
"Name": (b"\x53\x6E", EBMLTypes.TEXTU),
"Language": (b"\x22\xB5\x9C", EBMLTypes.TEXTA),
"CodecID": (b"\x86", EBMLTypes.TEXTA),
"CodecPrivate": (b"\x63\xA2", EBMLTypes.BINARY),
"CodecName": (b"\x25\x86\x88", EBMLTypes.TEXTU),
"AttachmentLink": (b"\x74\x46", EBMLTypes.UNSIGNED),
"CodecSettings": (b"\x3A\x96\x97", EBMLTypes.TEXTU),
"CodecInfoURL": (b"\x3B\x40\x40", EBMLTypes.TEXTA),
"CodecDownloadURL": (b"\x26\xB2\x40", EBMLTypes.TEXTA),
"CodecDecodeAll": (b"\xAA", EBMLTypes.UNSIGNED),
"TrackOverlay": (b"\x6F\xAB", EBMLTypes.UNSIGNED),
"TrackTranslate": (b"\x66\x24", EBMLTypes.MASTER),
"TrackTranslateEditionUID": (b"\x66\xFC", EBMLTypes.UNSIGNED),
"TrackTranslateCodec": (b"\x66\xBF", EBMLTypes.UNSIGNED),
"TrackTranslateTrackID": (b"\x66\xA5", EBMLTypes.BINARY),
"Video": (b"\xE0", EBMLTypes.MASTER),
"FlagInterlaced": (b"\x9A", EBMLTypes.UNSIGNED),
"StereoMode": (b"\x53\xB8", EBMLTypes.UNSIGNED),
"OldStereoMode": (b"\x53\xB9", EBMLTypes.UNSIGNED),
"PixelWidth": (b"\xB0", EBMLTypes.UNSIGNED),
"PixelHeight": (b"\xBA", EBMLTypes.UNSIGNED),
"PixelCropBottom": (b"\x54\xAA", EBMLTypes.UNSIGNED),
"PixelCropTop": (b"\x54\xBB", EBMLTypes.UNSIGNED),
"PixelCropLeft": (b"\x54\xCC", EBMLTypes.UNSIGNED),
"PixelCropRight": (b"\x54\xDD", EBMLTypes.UNSIGNED),
"DisplayWidth": (b"\x54\xB0", EBMLTypes.UNSIGNED),
"DisplayHeight": (b"\x54\xBA", EBMLTypes.UNSIGNED),
"DisplayUnit": (b"\x54\xB2", EBMLTypes.UNSIGNED),
"AspectRatioType": (b"\x54\xB3", EBMLTypes.UNSIGNED),
"ColourSpace": (b"\x2E\xB5\x24", EBMLTypes.BINARY),
"GammaValue": (b"\x2F\xB5\x23", EBMLTypes.FLOAT),
"FrameRate": (b"\x23\x83\xE3", EBMLTypes.FLOAT),
"Audio": (b"\xE1", EBMLTypes.MASTER),
"SamplingFrequency": (b"\xB5", EBMLTypes.FLOAT),
"OutputSamplingFrequency": (b"\x78\xB5", EBMLTypes.FLOAT),
"Channels": (b"\x9F", EBMLTypes.UNSIGNED),
"ChannelPositions": (b"\x7D\x7B", EBMLTypes.BINARY),
"BitDepth": (b"\x62\x64", EBMLTypes.UNSIGNED),
"TrackOperation": (b"\xE2", EBMLTypes.MASTER),
"TrackCombinePlanes": (b"\xE3", EBMLTypes.MASTER),
"TrackPlane": (b"\xE4", EBMLTypes.MASTER),
"TrackPlaneUID": (b"\xE5", EBMLTypes.UNSIGNED),
"TrackPlaneType": (b"\xE6", EBMLTypes.UNSIGNED),
"TrackJoinBlocks": (b"\xE9", EBMLTypes.MASTER),
"TrackJoinUID": (b"\xED", EBMLTypes.UNSIGNED),
"TrickTrackUID": (b"\xC0", EBMLTypes.UNSIGNED),
"TrickTrackSegmentUID": (b"\xC1", EBMLTypes.BINARY),
"TrickTrackFlag": (b"\xC6", EBMLTypes.UNSIGNED),
"TrickMasterTrackUID": (b"\xC7", EBMLTypes.UNSIGNED),
"TrickMasterTrackSegmentUID": (b"\xC4", EBMLTypes.BINARY),
"ContentEncodings": (b"\x6D\x80", EBMLTypes.MASTER),
"ContentEncoding": (b"\x62\x40", EBMLTypes.MASTER),
"ContentEncodingOrder": (b"\x50\x31", EBMLTypes.UNSIGNED),
"ContentEncodingScope": (b"\x50\x32", EBMLTypes.UNSIGNED),
"ContentEncodingType": (b"\x50\x33", EBMLTypes.UNSIGNED),
"ContentCompression": (b"\x50\x34", EBMLTypes.MASTER),
"ContentCompAlgo": (b"\x42\x54", EBMLTypes.UNSIGNED),
"ContentCompSettings": (b"\x42\x55", EBMLTypes.BINARY),
"ContentEncryption": (b"\x50\x35", EBMLTypes.MASTER),
"ContentEncAlgo": (b"\x47\xE1", EBMLTypes.UNSIGNED),
"ContentEncKeyID": (b"\x47\xE2", EBMLTypes.BINARY),
"ContentSignature": (b"\x47\xE3", EBMLTypes.BINARY),
"ContentSigKeyID": (b"\x47\xE4", EBMLTypes.BINARY),
"ContentSigAlgo": (b"\x47\xE5", EBMLTypes.UNSIGNED),
"ContentSigHashAlgo": (b"\x47\xE6", EBMLTypes.UNSIGNED),
"Cues": (b"\x1C\x53\xBB\x6B", EBMLTypes.MASTER),
"CuePoint": (b"\xBB", EBMLTypes.MASTER),
"CueTime": (b"\xB3", EBMLTypes.UNSIGNED),
"CueTrackPositions": (b"\xB7", EBMLTypes.MASTER),
"CueTrack": (b"\xF7", EBMLTypes.UNSIGNED),
"CueClusterPosition": (b"\xF1", EBMLTypes.UNSIGNED),
"CueBlockNumber": (b"\x53\x78", EBMLTypes.UNSIGNED),
"CueCodecState": (b"\xEA", EBMLTypes.UNSIGNED),
"CueReference": (b"\xDB", EBMLTypes.MASTER),
"CueRefTime": (b"\x96", EBMLTypes.UNSIGNED),
"CueRefCluster": (b"\x97", EBMLTypes.UNSIGNED),
"CueRefNumber": (b"\x53\x5F", EBMLTypes.UNSIGNED),
"CueRefCodecState": (b"\xEB", EBMLTypes.UNSIGNED),
"Attachments": (b"\x19\x41\xA4\x69", EBMLTypes.MASTER),
"AttachedFile": (b"\x61\xA7", EBMLTypes.MASTER),
"FileDescription": (b"\x46\x7E", EBMLTypes.TEXTU),
"FileName": (b"\x46\x6E", EBMLTypes.TEXTU),
"FileMimeType": (b"\x46\x60", EBMLTypes.TEXTA),
"FileData": (b"\x46\x5C", EBMLTypes.BINARY),
"FileUID": (b"\x46\xAE", EBMLTypes.UNSIGNED),
"FileReferral": (b"\x46\x75", EBMLTypes.BINARY),
"FileUsedStartTime": (b"\x46\x61", EBMLTypes.UNSIGNED),
"FileUsedEndTime": (b"\x46\x62", EBMLTypes.UNSIGNED),
"Chapters": (b"\x10\x43\xA7\x70", EBMLTypes.MASTER),
"EditionEntry": (b"\x45\xB9", EBMLTypes.MASTER),
"EditionUID": (b"\x45\xBC", EBMLTypes.UNSIGNED),
"EditionFlagHidden": (b"\x45\xBD", EBMLTypes.UNSIGNED),
"EditionFlagDefault": (b"\x45\xDB", EBMLTypes.UNSIGNED),
"EditionFlagOrdered": (b"\x45\xDD", EBMLTypes.UNSIGNED),
"ChapterAtom": (b"\xB6", EBMLTypes.MASTER),
"ChapterUID": (b"\x73\xC4", EBMLTypes.UNSIGNED),
"ChapterTimeStart": (b"\x91", EBMLTypes.UNSIGNED),
"ChapterTimeEnd": (b"\x92", EBMLTypes.UNSIGNED),
"ChapterFlagHidden": (b"\x98", EBMLTypes.UNSIGNED),
"ChapterFlagEnabled": (b"\x45\x98", EBMLTypes.UNSIGNED),
"ChapterSegmentUID": (b"\x6E\x67", EBMLTypes.BINARY),
"ChapterSegmentEditionUID": (b"\x6E\xBC", EBMLTypes.UNSIGNED),
"ChapterPhysicalEquiv": (b"\x63\xC3", EBMLTypes.UNSIGNED),
"ChapterTrack": (b"\x8F", EBMLTypes.MASTER),
"ChapterTrackNumber": (b"\x89", EBMLTypes.UNSIGNED),
"ChapterDisplay": (b"\x80", EBMLTypes.MASTER),
"ChapString": (b"\x85", EBMLTypes.TEXTU),
"ChapLanguage": (b"\x43\x7C", EBMLTypes.TEXTA),
"ChapCountry": (b"\x43\x7E", EBMLTypes.TEXTA),
"ChapProcess": (b"\x69\x44", EBMLTypes.MASTER),
"ChapProcessCodecID": (b"\x69\x55", EBMLTypes.UNSIGNED),
"ChapProcessPrivate": (b"\x45\x0D", EBMLTypes.BINARY),
"ChapProcessCommand": (b"\x69\x11", EBMLTypes.MASTER),
"ChapProcessTime": (b"\x69\x22", EBMLTypes.UNSIGNED),
"ChapProcessData": (b"\x69\x33", EBMLTypes.BINARY),
"Tags": (b"\x12\x54\xC3\x67", EBMLTypes.MASTER),
"Tag": (b"\x73\x73", EBMLTypes.MASTER),
"Targets": (b"\x63\xC0", EBMLTypes.MASTER),
"TargetTypeValue": (b"\x68\xCA", EBMLTypes.UNSIGNED),
"TargetType": (b"\x63\xCA", EBMLTypes.TEXTA),
"TagTrackUID": (b"\x63\xC5", EBMLTypes.UNSIGNED),
"TagEditionUID": (b"\x63\xC9", EBMLTypes.UNSIGNED),
"TagChapterUID": (b"\x63\xC4", EBMLTypes.UNSIGNED),
"TagAttachmentUID": (b"\x63\xC6", EBMLTypes.UNSIGNED),
"SimpleTag": (b"\x67\xC8", EBMLTypes.MASTER),
"TagName": (b"\x45\xA3", EBMLTypes.TEXTU),
"TagLanguage": (b"\x44\x7A", EBMLTypes.TEXTA),
"TagDefault": (b"\x44\x84", EBMLTypes.UNSIGNED),
"TagString": (b"\x44\x87", EBMLTypes.TEXTU),
"TagBinary": (b"\x44\x85", EBMLTypes.BINARY),
"CodecDelay": (b"\x56\xAA", EBMLTypes.UNSIGNED),
"SeekPreRoll": (b"\x56\xBB", EBMLTypes.UNSIGNED),
"CueRelativePosition": (b"\xF0", EBMLTypes.UNSIGNED),
"AlphaMode": (b"\x53\xC0", EBMLTypes.UNSIGNED),
"BitsPerChannel": (b"\x55\xB2", EBMLTypes.UNSIGNED),
"CbSubsamplingHorz": (b"\x55\xB5", EBMLTypes.UNSIGNED),
"CbSubsamplingVert": (b"\x55\xB6", EBMLTypes.UNSIGNED),
"ChapterStringUID": (b"\x56\x54", EBMLTypes.TEXTU),
"ChromaSitingHorz": (b"\x55\xB7", EBMLTypes.UNSIGNED),
"ChromaSitingVert": (b"\x55\xB8", EBMLTypes.UNSIGNED),
"ChromaSubsamplingHorz": (b"\x55\xB3", EBMLTypes.UNSIGNED),
"ChromaSubsamplingVert": (b"\x55\xB4", EBMLTypes.UNSIGNED),
"Colour": (b"\x55\xB0", EBMLTypes.MASTER),
"DefaultDecodedFieldDuration": (b"\x23\x4E\x7A", EBMLTypes.UNSIGNED),
"DiscardPadding": (b"\x75\xA2", EBMLTypes.SIGNED),
"FieldOrder": (b"\x9D", EBMLTypes.UNSIGNED),
"LuminanceMax": (b"\x55\xD9", EBMLTypes.FLOAT),
"LuminanceMin": (b"\x55\xDA", EBMLTypes.FLOAT),
"MasteringMetadata": (b"\x55\xD0", EBMLTypes.MASTER),
"MatrixCoefficients": (b"\x55\xB1", EBMLTypes.UNSIGNED),
"MaxCLL": (b"\x55\xBC", EBMLTypes.UNSIGNED),
"MaxFALL": (b"\x55\xBD", EBMLTypes.UNSIGNED),
"Primaries": (b"\x55\xBB", EBMLTypes.UNSIGNED),
"PrimaryBChromaticityX": (b"\x55\xD5", EBMLTypes.FLOAT),
"PrimaryBChromaticityY": (b"\x55\xD6", EBMLTypes.FLOAT),
"PrimaryGChromaticityX": (b"\x55\xD3", EBMLTypes.FLOAT),
"PrimaryGChromaticityY": (b"\x55\xD4", EBMLTypes.FLOAT),
"PrimaryRChromaticityX": (b"\x55\xD1", EBMLTypes.FLOAT),
"PrimaryRChromaticityY": (b"\x55\xD2", EBMLTypes.FLOAT),
"Range": (b"\x55\xB9", EBMLTypes.UNSIGNED),
"TransferCharacteristics": (b"\x55\xBA", EBMLTypes.UNSIGNED),
"WhitePointChromaticityX": (b"\x55\xD7", EBMLTypes.FLOAT),
"WhitePointChromaticityY": (b"\x55\xD8", EBMLTypes.FLOAT),
}
def get_largest_byte(byte, signed=False):
if byte < 0:
x = 0x100
while (byte + x) < (x / 2):
x <<= 8 # >> means i / 2**1; << means i * 2**1
byte += x
if byte < 0x100:
return chr(byte)
signed = False
elif (byte < 0x100 and not signed) or (byte < 0x80):
return chr(byte)
return get_largest_byte(byte >> 8, signed) + chr(byte & 0xFF)
def encode_embl(byte):
def move_bits(rest_of_byte, bits):
if bits==8:
return chr(rest_of_byte & 0xFF);
else:
return move_bits(rest_of_byte >> 8, bits - 8) + chr(rest_of_byte & 0xFF)
if byte == -1:
return chr(0xFF)
if byte < 2**7 - 1:
return chr(byte | 0x80)
if byte < 2**14 - 1:
return chr(0x40 | (byte >> 8)) + move_bits(byte, 8)
if byte < 2**21 - 1:
return chr(0x20 | (byte >> 16)) + move_bits(byte, 16)
if byte < 2**28 - 1:
return chr(0x10 | (byte >> 24)) + move_bits(byte, 24)
if byte < 2**35 - 1:
return chr(0x08 | (byte >> 32)) + move_bits(byte, 32)
if byte < 2**42 - 1:
return chr(0x04 | (byte >> 40)) + move_bits(byte, 40)
if byte < 2**49 - 1:
return chr(0x02 | (byte >> 48)) + move_bits(byte, 48)
if byte < 2**56 - 1:
return chr(0x01) + move_bits(byte, 56)
raise Exception("FOUND BYTE IS TOO BIG")
def get_ebml_element(element_id, element_data, element_length = None):
if element_length == None:
element_length = len(element_data)
return get_largest_byte(element_id) + encode_embl(element_length) + element_data
class ConvertXMLtoMKV(handler.ContentHandler):
def __init__(self):
self.stack_table = []
self.pump_stack = []
self.timecodeScale = 1000000
self.check_duration = None
self.last_block_duration = 0
self.compress_header = {}
self.current_track = None
self.current_compiling_algorithm = None
self.current_character_character_content_compiling_settings = None
pass
def get_duration(self, duration):
if not self.check_duration:
self.check_duration = duration
else:
if duration != self.check_duration:
sys.stderr.write("Duration has been ignored due to being edited\n")
sys.stderr.write("<duration> is meaningful in <block>s that are used in\n")
sys.stderr.write("\"nocluster\" mode (mkv2xml -C)\n")
def startElement(self, name, attributes):
self.element_name = name
self.element_data= []
if name == "mkv2xml":
pass
elif name == "Segment":
sys.stdout.write(b"\x18\x53\x80\x67"+b"\xFF")
sys.stdout.write(b"\xEC\x40\x80" + (b"\x00" * 128))
pass
elif name == "track" or name == "duration" or name == "timecode":
pass
elif name == "data":
self.character_content_of_the_frame = False
if "encoding" in attributes:
if attributes["encoding"] == "text":
self.character_content_of_the_frame = True
elif name == "discardable":
self.discardable_frame = True
elif name == "keyframe":
self.keyframe_frame = True
elif name == "invisible":
self.invisible_frame = True
else:
if name in table_element_name:
(element_id, element_type) = table_element_name[name]
self.current_element_type = element_type
self.stack_table.append((name, attributes))
self.pump_stack.append(b"")
if "encoding" in attributes:
if attributes["encoding"] == "text":
self.current_element_type = EBMLTypes.TEXTA
if name == "SimpleBlock" or name == "Block" or name == "block":
self.discardable_frame = False
self.invisible_frame = False
self.keyframe_frame = False
self.current_pumped_frame = ""
self.frame_buffering = []
self.duration_of_the_frame = None
self.current_element_type = None # prevent usual binary processing
if name == "BlockGroup":
self.check_duration = None
def characters(self, character_content):
self.element_data.append(character_content)
def characters_old(self, character_content):
if self.element_name == "data":
self.current_pumped_frame += character_content
return
if not character_content.isspace():
pump = ""
if self.element_name == "track":
self.track_of_the_frame = int(character_content)
return
elif self.element_name == "timecode":
self.timecode_of_the_frame = float(character_content)
return
elif self.element_name == "duration":
self.duration_of_the_frame = float(character_content)
return
elif self.current_element_type == EBMLTypes.TEXTA:
pump = str(character_content).encode("ascii")
elif self.current_element_type == EBMLTypes.TEXTU:
pump = str(character_content).encode("UTF-8")
elif self.current_element_type == EBMLTypes.UNSIGNED:
pump = get_largest_byte(int(character_content))
if self.element_name == "TimecodeScale":
self.timecodeScale = int(character_content)
elif self.element_name == "Timecode":
self.last_cluster = int(character_content)
elif self.element_name == "BlockDuration":
self.get_duration(int(character_content))
elif self.current_element_type == EBMLTypes.SIGNED:
pump = get_largest_byte(int(character_content), True)
elif self.current_element_type == EBMLTypes.BINARY:
character_content = character_content.replace("\n","").replace("\r","").replace(" ","");
pump = binascii.unhexlify(maybe_encode(character_content))
pass
elif self.current_element_type == EBMLTypes.DATE:
actual_duration = float(character_content)
actual_duration -= 978300000
actual_duration *= 1000000000.0;
pump = get_largest_byte(int(actual_duration), True)
elif self.current_element_type == EBMLTypes.FLOAT:
pump = pack(">d", float(character_content))
self.pump_stack[-1]+=pump
def endElement(self, name):
character_content = "".join(self.element_data)
if character_content:
self.characters_old(character_content)
self.element_data=[]
if name == "track" or name == "timecode" or name == "discardable" or name == "keyframe" or \
name == "invisible" or name == "duration":
return
elif name == "data":
if self.character_content_of_the_frame:
self.frame_buffering.append(maybe_encode_utf8(str(self.current_pumped_frame)))
else:
text = self.current_pumped_frame.replace("\n", "").replace("\t", "").replace(" ", "")
self.frame_buffering.append(binascii.unhexlify(maybe_encode(text)))
self.current_pumped_frame=""
return
if name != "block":
if not name in table_element_name:
if not name == "mkv2xml":
sys.stderr.write("Element is not known %s\n"%name)
return
if name=="TrackEntry":
if self.current_compiling_algorithm == 3:
self.compress_header[self.current_track] = binascii.unhexlify(maybe_encode(self.current_character_character_content_compiling_settings))
self.current_character_character_content_compiling_settings = None
self.current_compiling_algorithm = None
sys.stderr.write("Using header compression for track "+str(self.current_track)+"\n");
if name=="TrackNumber":
self.current_track = int(character_content)
if name=="ContentCompAlgo":
self.current_compiling_algorithm = int(character_content)
if name=="ContentCompSettings":
self.current_character_character_content_compiling_settings = character_content
if name=="Segment":
return
(element_id, element_type) = (None, None)
if name != "block":
(element_id, element_type) = table_element_name[name];
if (name == "SimpleBlock") or (name == "Block") or (name == "block"):
exact_timecode = int(self.timecode_of_the_frame * 1000000000 / self.timecodeScale)
similar_timecode = 0
if name != "block":
similar_timecode = exact_timecode - self.last_cluster
if self.duration_of_the_frame:
scale_down_the_duration = int(self.duration_of_the_frame * 1000000000 / self.timecodeScale)
self.get_duration(scale_down_the_duration)
if (similar_timecode < -0x8000) or (similar_timecode > 0x7FFF):
sys.stderr.write("Block timecode is too far from outer Cluster's timecode\n")
sys.stderr.write("Use no-cluster mode (mkv2xml -C) with <block> elements\n")
similar_timecode = 0;
if similar_timecode < 0:
similar_timecode+=0x10000
flags = 0x00
if self.keyframe_frame:
flags |= 0x80
if self.discardable_frame:
flags |= 0x01
if self.invisible_frame:
flags |= 0x08
length_of_the_XIPH=[]
character_content = b""
header = None
if self.track_of_the_frame in self.compress_header:
header = self.compress_header[self.track_of_the_frame]
for j in self.frame_buffering:
if header is not None:
if j[0:len(header)] != header:
sys.stderr.write("Unable to apply header compression here\n")
else:
j=j[len(header):]
character_content += j
length_of_the_XIPH.append(len(j))
laced_XIPH=b""
laced_XIPH_count = len(length_of_the_XIPH)-1
for j in range(0,laced_XIPH_count):
length = length_of_the_XIPH[j]
while length >= 255:
laced_XIPH += b"\xFF"
length -= 255
laced_XIPH += chr(length)
current_frame = None
if len(length_of_the_XIPH) <= 1:
current_frame = encode_embl(self.track_of_the_frame) + \
chr(similar_timecode >> 8) + chr(similar_timecode & 0xFF) + chr(flags) + character_content
else:
flags |= 0x02 # Xiph lacing
current_frame = encode_embl(self.track_of_the_frame) + chr(similar_timecode >> 8) + chr(similar_timecode & 0xFF) + \
chr(flags) + chr(laced_XIPH_count) + laced_XIPH + character_content
if name == "block":
if not self.duration_of_the_frame:
# Cluster + Timecode + simpleblock
cluster = get_ebml_element(0x1F43B675, b"" + get_ebml_element(0xE7, get_largest_byte(exact_timecode)) + get_ebml_element(0xA3, current_frame))
else:
scale_down_the_duration = int(self.duration_of_the_frame * 1000000000 / self.timecodeScale)
# Cluster + Timecode + BlockGroup + Block Duration + Block
cluster = get_ebml_element(0x1F43B675, b"" + get_ebml_element(0xE7, get_largest_byte(exact_timecode))
+ get_ebml_element(0xA0, b"" + get_ebml_element(0x9B, get_largest_byte(scale_down_the_duration)) + get_ebml_element(0xA1, current_frame)))
sys.stdout.write(cluster)
return
else:
self.pump_stack[-1] = current_frame
if not len(self.stack_table):
return
(_, attributes) = self.stack_table.pop()
pump = self.pump_stack.pop()
if name == "WritingApp" or name == "MuxingApp":
if pump.find(b"xml2mkv") == -1:
pump+=b"; xml2mkv"
if len(self.pump_stack):
self.pump_stack[-1] += element_id + encode_embl(len(pump)) + pump
else:
sys.stdout.write(element_id)
sys.stdout.write(encode_embl(len(pump)))
sys.stdout.write(pump)
pass
if sys.version >= '3':
sys.stdout = sys.stdout.detach()
parser = make_parser()
parser.setContentHandler(ConvertXMLtoMKV())
parser.parse(sys.stdin)