| ## |
| ## Copyright (c) 2010 The WebM project authors. All Rights Reserved. |
| ## |
| ## Use of this source code is governed by a BSD-style license |
| ## that can be found in the LICENSE file in the root of the source |
| ## tree. An additional intellectual property rights grant can be found |
| ## in the file PATENTS. All contributing project authors may |
| ## be found in the AUTHORS file in the root of the source tree. |
| ## |
| |
| """ |
| predefine ebml elements. |
| """ |
| |
| __author__ = 'hwasoolee@google.com.com (Hwasoo Lee)' |
| |
| #Ebml Levels |
| LEVEL_0 = 0 |
| LEVEL_1 = 1 |
| LEVEL_2 = 2 |
| LEVEL_3 = 3 |
| LEVEL_4 = 4 |
| LEVEL_5 = 5 |
| LEVEL_6 = 6 |
| |
| #Ebml types |
| EBML_SUB_ELEMENT = 0 |
| EBML_BINARY = 1 |
| EBML_UINTEGER = 2 |
| EBML_UTF8 = 3 |
| EBML_FLOAT = 4 |
| EBML_DATE = 5 |
| EBML_STRING = 6 |
| EBML_UINTEGER_1BIT = 7 |
| |
| #Ebml header |
| EBML = 0x1A45DFA3 |
| EBML_VERSION = 0x4286 |
| EBML_READ_VERSION = 0x42F7 |
| EBML_MAX_ID_LENGTH = 0x42F2 |
| EBML_MAX_SIZE_LENGTH = 0x42F3 |
| EBML_DOC_TYPE = 0x4282 |
| EBML_DOC_TYPE_VERSION = 0x4287 |
| EBML_DOC_TYPE_READ_VERSION = 0x4285 |
| |
| #Global elements |
| CRC_32 = 0xBF |
| VOID = 0xEC |
| |
| #Segment code |
| SEGMENT = 0x18538067 |
| |
| #Meta seek information codes |
| SEEKHEAD = 0x114D9B74 |
| SEEK = 0x4DBB |
| SEEKID = 0x53AB |
| SEEKPOSITION = 0x53AC |
| |
| #Segment info codes |
| SEGMENT_INFO = 0x1549A966 |
| SEGMENTUID = 0x73A4 |
| SEGMENTFILENAME = 0x7384 |
| PREVUID = 0x3CB923 |
| PREVFILENAME = 0x3C83AB |
| NEXTUID = 0x3EB923 |
| NEXTFILENAME = 0x3E83BB |
| SEGMENTFAMILY = 0x4444 |
| CHAPTERTRANSLATE = 0x6924 |
| CHAPTERTRANSLATEEDITIONUID = 0x69FC |
| CHAPTERTRANSLATECODEC = 0x69BF |
| CHAPTERTRANSLATEID = 0x69A5 |
| TIMECODESCALE = 0x2AD7B1 |
| DURATION = 0x4489 |
| DATEUTC = 0x4461 |
| TITLE = 0x7BA9 |
| MUXINGAPP = 0x4D80 |
| WRITINGAPP = 0x5741 |
| |
| #Cluster codes |
| CLUSTER = 0x1F43B675 |
| TIMECODE = 0xE7 |
| SILENT_TRACKS = 0x5854 |
| SILENT_TRACK_NUMBER = 0x58D7 |
| POSITION = 0xA7 |
| PREVSIZE = 0xAB |
| BLOCK_GROUP = 0xA0 |
| BLOCK = 0xA1 |
| BLOCK_ADDITIONS = 0x75A1 |
| BLOCK_MORE = 0xA6 |
| BLOCK_ADD_ID = 0xEE |
| BLOCK_ADDITIONAL = 0xA5 |
| BLOCK_DURATION = 0x9B |
| REFERENCE_PRIORITY = 0xFA |
| REFERENCE_BLOCK = 0xFB |
| CODEC_STATE = 0xA4 |
| SLICES = 0x8E |
| TIME_SLICE = 0xE8 |
| LACE_NUMBER = 0xCC |
| SIMPLE_BLOCK = 0xA3 |
| |
| #Track codes |
| TRACKS = 0x1654AE6B |
| TRACK_ENTRY = 0xAE |
| TRACK_NUMBER = 0xD7 |
| TRACK_UID = 0x73C5 |
| TRACK_TYPE = 0x83 |
| FLAG_ENABLED = 0xB9 |
| FLAG_DEFAULT = 0x88 |
| FLAG_FORCED = 0x55AA |
| FLAG_LACING = 0x9C |
| MIN_CACHE = 0x6DE7 |
| MAX_CACHE = 0x6DF8 |
| DEFAULT_DURATION = 0x23E383 |
| TRACK_TIMECODE_SCALE = 0x23314F |
| MAX_BLOCK_ADDITION_ID = 0x55EE |
| NAME = 0x536E |
| LANGUAGE = 0x22B59C |
| CODEC_ID = 0x86 |
| CODEC_PRIVATE = 0x63A2 |
| CODEC_NAME = 0x258688 |
| ATTACHMENT_LINK = 0x7446 |
| CODEC_DECODE_ALL = 0xAA |
| TRACK_OVERLAY = 0x6FAB |
| TRACK_TRANSLATE = 0x6624 |
| TRACK_TRANSLATE_EDITION_UID = 0x66FC |
| TRACK_TRANSLATE_CODEC = 0x66BF |
| TRACK_TRANSLATE_TRACK_ID = 0x66A5 |
| VIDEO = 0xE0 |
| FLAG_INTERLACED = 0x9A |
| STEREO_MODE = 0x53B8 |
| PIXEL_WIDTH = 0xB0 |
| PIXEL_HEIGHT = 0xBA |
| PIXEL_CROP_BOTTOM = 0x54AA |
| PIXEL_CROP_TOP = 0x54BB |
| PIXEL_CROP_LEFT = 0x54CC |
| PIXEL_CROP_RIGHT = 0x54DD |
| DISPLAY_WIDTH = 0x54B0 |
| DISPLAY_HEIGHT = 0x54BA |
| DISPLAY_UNIT = 0x54B2 |
| ASPECT_RATIO_TYPE = 0x54B3 |
| COLOR_SPACE = 0x2EB524 |
| FRAME_RATE = 0x2383E3 |
| AUDIO = 0xE1 |
| SAMPLING_FREQUENCY = 0xB5 |
| OUTPUT_SAMPLING_FREQUENCY = 0x78B5 |
| CHANNELS = 0x9F |
| BIT_DEPTH = 0x6264 |
| CONTENT_ENCODINGS = 0x6D80 |
| CONTENT_ENCODING = 0x6240 |
| CONTENT_ENCODING_ORDER = 0x5031 |
| CONTENT_ENCODING_SCOPE = 0x5032 |
| CONTENT_ENCODING_TYPE = 0x5033 |
| CONTENT_COMPRESSION = 0x5034 |
| CONTENT_COMP_ALGO = 0x4254 |
| CONTENT_COMP_SETTINGS = 0x4255 |
| CONTENT_ENCRYPTION = 0x5035 |
| CONTENT_ENC_ALGO = 0x47E1 |
| CONTENT_ENC_KEY_ID = 0x47E2 |
| CONTENT_SIGNATURE = 0x47E3 |
| CONTENT_SIG_KEY_ID = 0x47E4 |
| CONTENT_SIG_ALOG = 0x47E5 |
| CONTENT_SIG_HASH_ALGO = 0x47E6 |
| |
| #Cueing data codes |
| CUES = 0x1C53BB6B |
| CUE_POINT = 0xBB |
| CUE_TIME = 0xB3 |
| CUE_TRACK_POSITIONS = 0xB7 |
| CUE_TRACK = 0xF7 |
| CUE_CLUSTER_POSITION = 0xF1 |
| CUE_BLOCK_NUMBER = 0x5378 |
| |
| ATTACHMENTS = 0x1941A469 |
| ATTACHED_FILE = 0x61A7 |
| FILE_DESCRIPTION = 0x467E |
| FILE_NAME = 0x466E |
| FILE_MIME_TYPE = 0x4660 |
| FILE_DATA = 0x465C |
| FILE_UID = 0x46AE |
| |
| CHAPTERS = 0x1043A770 |
| EDITION_ENTRY = 0x45B9 |
| EDITION_UID = 0x45BC |
| EDITION_FLAG_HIDDEN = 0x45BD |
| EDITION_FLAG_DEFAULT = 0x45DB |
| EDITION_FLAG_ORDERED = 0x45DD |
| CHAPTER_ATOM = 0xB6 |
| CHAPTER_UID = 0x73C4 |
| CHAPTER_TIME_START = 0x91 |
| CHAPTER_TIME_END = 0x91 |
| CHAPTER_FLAG_HIDDEN = 0x98 |
| CHAPTER_FLAG_ENABLED = 0x4598 |
| CHAPTER_SEGMENT_UID = 0x6E67 |
| CHAPTER_SEGMENT_EDITION_UID = 0x6EBC |
| CHAPTER_PHYSICAL_EQUIV = 0x63C3 |
| CHAPTER_TRACK = 0x8F |
| CHAPTER_TRACK_NUMBER = 0x89 |
| CHAPTER_DISPLAY = 0x80 |
| CHAP_STRING = 0x85 |
| CHAP_LANGUAGE = 0x437C |
| CHAP_COUNTRY = 0x437E |
| CHAP_PROCESS = 0x6944 |
| CHAP_PROCESS_CODEC_ID = 0x6955 |
| CHAP_PROCESS_PRIVATE = 0x450D |
| CHAP_PROCESS_COMMAND = 0x6911 |
| CHAP_PROCESS_TIME = 0x6922 |
| CHAP_PROCESS_DATA = 0x6933 |
| |
| TAGS = 0x1254C367 |
| TAG = 0x7373 |
| TARGETS = 0x63C0 |
| TARGET_TYPE_VALUE = 0x68CA |
| TARGET_TYPE = 0x63CA |
| #TRACK_UID = 0x63C5 |
| EDITION_UID = 0x63C9 |
| CHAPTER_UID = 0x63C4 |
| ATTACHMENT_UID = 0x63C6 |
| SIMPLE_TAG = 0x67C8 |
| TAG_NAME = 0x45A3 |
| TAG_LANGUAGE = 0x447A |
| TAG_DEFAULT = 0x4484 |
| TAG_STRING = 0x4487 |
| TAG_BINARY = 0x4485 |
| |
| seek_head_dic = { |
| SEEKHEAD : ('SeekHead', LEVEL_1, EBML_SUB_ELEMENT), |
| SEEK : ('Seek', LEVEL_1, EBML_SUB_ELEMENT), |
| SEEKID : ('SeekId', LEVEL_2, EBML_BINARY), |
| SEEKPOSITION : ('SeekPosition', LEVEL_3, EBML_UINTEGER), |
| VOID : ('Void', LEVEL_1, EBML_BINARY) |
| } |
| |
| segment_info_dic = { |
| SEGMENT_INFO : ('SegmentInfo', LEVEL_1, EBML_SUB_ELEMENT), |
| SEGMENTUID : ('SegmentUID', LEVEL_2, EBML_BINARY), |
| SEGMENTFILENAME : ('SegmentFilename', LEVEL_2, EBML_UTF8), |
| PREVUID : ('PrevUID', LEVEL_2, EBML_BINARY), |
| PREVFILENAME : ('PrevFilename', LEVEL_2, EBML_UTF8), |
| NEXTUID : ('NextUID', LEVEL_2, EBML_BINARY), |
| NEXTFILENAME : ('NextFilename', LEVEL_2, EBML_UTF8), |
| SEGMENTFAMILY : ('SegmentFamily', LEVEL_2, EBML_BINARY), |
| CHAPTERTRANSLATE : ('ChapterTranslate', LEVEL_2, EBML_SUB_ELEMENT), |
| CHAPTERTRANSLATEEDITIONUID : ('ChapterTranslateEditionUID', LEVEL_3, EBML_UINTEGER), |
| CHAPTERTRANSLATECODEC : ('ChapterTranslateCodec', LEVEL_3, EBML_UINTEGER), |
| CHAPTERTRANSLATEID : ('ChapterTranslateID', LEVEL_3, EBML_BINARY), |
| TIMECODESCALE : ('TimecodeScale', LEVEL_2, EBML_UINTEGER), |
| DURATION : ('Duration', LEVEL_2, EBML_FLOAT), |
| DATEUTC : ('DateUTC', LEVEL_2, EBML_DATE), |
| TITLE : ('Title', LEVEL_2, EBML_UTF8), |
| MUXINGAPP : ('MuxingApp', LEVEL_2, EBML_UTF8), |
| WRITINGAPP : ('WritingApp', LEVEL_2, EBML_UTF8) |
| } |
| |
| track_dic = { |
| TRACKS : ('Track', LEVEL_1, EBML_SUB_ELEMENT), |
| TRACK_ENTRY : ('Track Entry', LEVEL_2, EBML_SUB_ELEMENT), |
| TRACK_NUMBER : ('Track Number', LEVEL_3, EBML_UINTEGER), |
| TRACK_UID : ('Track Uid', LEVEL_3, EBML_UINTEGER), |
| TRACK_TYPE : ('Track Type', LEVEL_3, EBML_UINTEGER), |
| FLAG_ENABLED : ('Flag Enabled', LEVEL_3, EBML_UINTEGER), |
| FLAG_DEFAULT : ('Flag Default', LEVEL_3, EBML_UINTEGER), |
| FLAG_FORCED : ('Flag Forced', LEVEL_3, EBML_UINTEGER), |
| FLAG_LACING : ('Flag Lacing', LEVEL_3, EBML_UINTEGER), |
| DEFAULT_DURATION : ('Default Duration', LEVEL_3, EBML_UINTEGER), |
| NAME: ('Name', LEVEL_3, EBML_UTF8), |
| LANGUAGE : ('Language', LEVEL_3, EBML_STRING), |
| CODEC_ID : ('Codec Id', LEVEL_3, EBML_STRING), |
| CODEC_PRIVATE : ('Codec Private', LEVEL_3, EBML_BINARY), |
| CODEC_NAME : ('Codec Name', LEVEL_3, EBML_UTF8), |
| VIDEO : ('Video', LEVEL_3, EBML_SUB_ELEMENT), |
| FLAG_INTERLACED : ('Flag Interlaced', LEVEL_4, EBML_UINTEGER), |
| PIXEL_WIDTH : ('Pixel Width', LEVEL_4, EBML_UINTEGER), |
| PIXEL_HEIGHT : ('Pixel Height', LEVEL_4, EBML_UINTEGER), |
| PIXEL_CROP_BOTTOM : ('Pixel Crop Bottom', LEVEL_4, EBML_UINTEGER), |
| PIXEL_CROP_TOP : ('Pixel Crop Top', LEVEL_4, EBML_UINTEGER), |
| PIXEL_CROP_LEFT : ('Pixel Crop Left', LEVEL_4, EBML_UINTEGER), |
| PIXEL_CROP_RIGHT : ('Pixel Crop Right', LEVEL_4, EBML_UINTEGER), |
| DISPLAY_WIDTH : ('Display Width', LEVEL_4, EBML_UINTEGER), |
| DISPLAY_HEIGHT : ('Display Height', LEVEL_4, EBML_UINTEGER), |
| DISPLAY_UNIT : ('Display Unit', LEVEL_4, EBML_UINTEGER), |
| STEREO_MODE : ('Stereo Mode', LEVEL_4, EBML_UINTEGER), |
| ASPECT_RATIO_TYPE : ('Aspect Ratio Type', LEVEL_4, EBML_UINTEGER), |
| FRAME_RATE : ('Frame Rate', LEVEL_4, EBML_FLOAT), |
| AUDIO : ('Audio', LEVEL_3, EBML_SUB_ELEMENT), |
| SAMPLING_FREQUENCY : ('Sampling Frequency', LEVEL_4, EBML_FLOAT), |
| OUTPUT_SAMPLING_FREQUENCY : ('Output sampling Frequency', LEVEL_4, |
| EBML_FLOAT), |
| CHANNELS : ('Channels', LEVEL_4, EBML_UINTEGER), |
| BIT_DEPTH : ('Bit Depth', LEVEL_4, EBML_UINTEGER), |
| VOID : ('Void', LEVEL_1, EBML_BINARY) |
| #not valid webm from here |
| #TRACK_TIMECODE_SCALE : ('Track Timecode Scale', LEVEL_3, EBML_FLOAT) |
| #MIN_CACHE : ('Min Cache', LEVEL_3, EBML_UINTEGER) |
| } |
| |
| cue_dic = { |
| CUES : ('Cues', LEVEL_1, EBML_SUB_ELEMENT), |
| CUE_POINT : ('Cue Point', LEVEL_2, EBML_SUB_ELEMENT), |
| CUE_TIME : ('Cue Time', LEVEL_3, EBML_UINTEGER), |
| CUE_TRACK_POSITIONS : ('Cue Track Positions', LEVEL_3, EBML_SUB_ELEMENT), |
| CUE_TRACK : ('Cue Track', LEVEL_4, EBML_UINTEGER), |
| CUE_CLUSTER_POSITION : ('Cue Cluster Position', LEVEL_4, EBML_UINTEGER), |
| CUE_BLOCK_NUMBER : ('Cue Block Number', LEVEL_4, EBML_UINTEGER) |
| } |
| |
| cluster_dic = { |
| CLUSTER : ('Cluster', LEVEL_1, EBML_SUB_ELEMENT), |
| TIMECODE : ('TimeCode', LEVEL_2, EBML_UINTEGER), |
| SILENT_TRACKS : ('SilentTracks', LEVEL_2, EBML_SUB_ELEMENT), |
| SILENT_TRACK_NUMBER : ('SilentTrackNumber', LEVEL_3, EBML_UINTEGER), |
| POSITION : ('Position', LEVEL_2, EBML_UINTEGER), |
| PREVSIZE : ('PrevSize', LEVEL_2, EBML_UINTEGER), |
| BLOCK_GROUP : ('BlockGroup', LEVEL_2, EBML_SUB_ELEMENT), |
| BLOCK : ('Block', LEVEL_3, EBML_BINARY), |
| BLOCK_ADDITIONS : ('BlockAdditions', LEVEL_3, EBML_SUB_ELEMENT), |
| BLOCK_MORE : ('BlockMore', LEVEL_4, EBML_SUB_ELEMENT), |
| BLOCK_ADD_ID : ('BlockAddId', LEVEL_5, EBML_UINTEGER), |
| BLOCK_ADDITIONAL : ('BlockAdditional', LEVEL_5, EBML_BINARY), |
| BLOCK_DURATION : ('BlockDuration', LEVEL_3, EBML_UINTEGER), |
| REFERENCE_PRIORITY : ('ReferencePriority', LEVEL_3, EBML_UINTEGER), |
| REFERENCE_BLOCK : ('ReferenceBlock', LEVEL_3, EBML_UINTEGER), |
| CODEC_STATE : ('CodecState', LEVEL_3, EBML_BINARY), |
| SLICES : ('Slices', LEVEL_3, EBML_SUB_ELEMENT), |
| TIME_SLICE : ('TimeSlice', LEVEL_4, EBML_SUB_ELEMENT), |
| LACE_NUMBER : ('LaceNumber', LEVEL_5, EBML_UINTEGER), |
| SIMPLE_BLOCK : ('SimpleBlock', LEVEL_2, EBML_BINARY) |
| } |
| |
| dic_element = { SEEKHEAD : seek_head_dic, SEGMENT_INFO : segment_info_dic, TRACKS : track_dic, |
| CUES : cue_dic, CLUSTER : cluster_dic } |
