kontainer-js/Matroska/ElementLookup.js

A media file format generator/parser that exposes a React-like API.

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _Util = require('../core/Util');

var _Unknown = require('./EBMLElement/Unknown');

var _Unknown2 = _interopRequireDefault(_Unknown);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var clazz = {
  'File': require('./EBMLElement/File').default,
  // Level-0 element - EBML
  'EBML': require('./EBMLElement/EBML').default,
  'EBMLVersion': require('./EBMLElement/EBMLVersion').default,
  'EBMLReadVersion': require('./EBMLElement/EBMLReadVersion').default,
  'EBMLMaxIDLength': require('./EBMLElement/EBMLMaxIDLength').default,
  'EBMLMaxSizeLength': require('./EBMLElement/EBMLMaxSizeLength').default,
  'DocType': require('./EBMLElement/DocType').default,
  'DocTypeVersion': require('./EBMLElement/DocTypeVersion').default,
  'DocTypeReadVersion': require('./EBMLElement/DocTypeReadVersion').default,
  // Global element - Void
  'Void': require('./EBMLElement/Void').default,
  // Level-0 element - Segment
  'Segment': require('./EBMLElement/Segment').default,
  // Level-1 element - SeekHead
  'SeekHead': require('./EBMLElement/SeekHead').default,
  'Seek': require('./EBMLElement/Seek').default,
  'SeekID': require('./EBMLElement/SeekID').default,
  'SeekPosition': require('./EBMLElement/SeekPosition').default,
  // Level-1 element - Info
  'Info': require('./EBMLElement/Info').default,
  'SegmentUID': require('./EBMLElement/SegmentUID').default,
  'TimecodeScale': require('./EBMLElement/TimecodeScale').default,
  'Duration': require('./EBMLElement/Duration').default,
  'DateUTC': require('./EBMLElement/DateUTC').default,
  'Title': require('./EBMLElement/Title').default,
  'MuxingApp': require('./EBMLElement/MuxingApp').default,
  'WritingApp': require('./EBMLElement/WritingApp').default,
  // Level-1 element - Cluster
  'Cluster': require('./EBMLElement/Cluster').default,
  'Timecode': require('./EBMLElement/Timecode').default,
  'PrevSize': require('./EBMLElement/PrevSize').default,
  'SimpleBlock': require('./EBMLElement/SimpleBlock').default,
  'BlockGroup': require('./EBMLElement/BlockGroup').default,
  'Block': require('./EBMLElement/Block').default,
  'BlockAdditions': require('./EBMLElement/BlockAdditions').default,
  'BlockMore': require('./EBMLElement/BlockMore').default,
  'BlockAddID': require('./EBMLElement/BlockAddID').default,
  'BlockAdditional': require('./EBMLElement/BlockAdditional').default,
  'BlockDuration': require('./EBMLElement/BlockDuration').default,
  'ReferenceBlock': require('./EBMLElement/ReferenceBlock').default,
  'DiscardPadding': require('./EBMLElement/DiscardPadding').default,
  // Level-1 element - Tracks
  'Tracks': require('./EBMLElement/Tracks').default,
  'TrackEntry': require('./EBMLElement/TrackEntry').default,
  'TrackNumber': require('./EBMLElement/TrackNumber').default,
  'TrackUID': require('./EBMLElement/TrackUID').default,
  'TrackType': require('./EBMLElement/TrackType').default,
  'FlagEnabled': require('./EBMLElement/FlagEnabled').default,
  'FlagDefault': require('./EBMLElement/FlagDefault').default,
  'FlagForced': require('./EBMLElement/FlagForced').default,
  'FlagLacing': require('./EBMLElement/FlagLacing').default,
  'DefaultDuration': require('./EBMLElement/DefaultDuration').default,
  'Name': require('./EBMLElement/Name').default,
  'Language': require('./EBMLElement/Language').default,
  'CodecID': require('./EBMLElement/CodecID').default,
  'CodecPrivate': require('./EBMLElement/CodecPrivate').default,
  'CodecName': require('./EBMLElement/CodecName').default,
  'CodecDelay': require('./EBMLElement/CodecDelay').default,
  'SeekPreRoll': require('./EBMLElement/SeekPreRoll').default,
  'Video': require('./EBMLElement/Video').default,
  'FlagInterlaced': require('./EBMLElement/FlagInterlaced').default,
  'StereoMode': require('./EBMLElement/StereoMode').default,
  'AlphaMode': require('./EBMLElement/AlphaMode').default,
  'PixelWidth': require('./EBMLElement/PixelWidth').default,
  'PixelHeight': require('./EBMLElement/PixelHeight').default,
  'PixelCropBottom': require('./EBMLElement/PixelCropBottom').default,
  'PixelCropTop': require('./EBMLElement/PixelCropTop').default,
  'PixelCropLeft': require('./EBMLElement/PixelCropLeft').default,
  'PixelCropRight': require('./EBMLElement/PixelCropRight').default,
  'DisplayWidth': require('./EBMLElement/DisplayWidth').default,
  'DisplayHeight': require('./EBMLElement/DisplayHeight').default,
  'DisplayUnit': require('./EBMLElement/DisplayUnit').default,
  'AspectRatioType': require('./EBMLElement/AspectRatioType').default,
  'Audio': require('./EBMLElement/Audio').default,
  'SamplingFrequency': require('./EBMLElement/SamplingFrequency').default,
  'OutputSamplingFrequency': require('./EBMLElement/OutputSamplingFrequency').default,
  'Channels': require('./EBMLElement/Channels').default,
  'BitDepth': require('./EBMLElement/BitDepth').default,
  'ContentEncodings': require('./EBMLElement/ContentEncodings').default,
  'ContentEncoding': require('./EBMLElement/ContentEncoding').default,
  'ContentEncodingOrder': require('./EBMLElement/ContentEncodingOrder').default,
  'ContentEncodingScope': require('./EBMLElement/ContentEncodingScope').default,
  'ContentEncodingType': require('./EBMLElement/ContentEncodingType').default,
  'ContentEncryption': require('./EBMLElement/ContentEncryption').default,
  'ContentEncAlgo': require('./EBMLElement/ContentEncAlgo').default,
  'ContentEncKeyID': require('./EBMLElement/ContentEncKeyID').default,
  'ContentEncAESSettings': require('./EBMLElement/ContentEncAESSettings').default,
  'AESSettingsCipherMode': require('./EBMLElement/AESSettingsCipherMode').default,
  // Level-1 element - Cues
  'Cues': require('./EBMLElement/Cues').default,
  'CuePoint': require('./EBMLElement/CuePoint').default,
  'CueTime': require('./EBMLElement/CueTime').default,
  'CueTrackPositions': require('./EBMLElement/CueTrackPositions').default,
  'CueTrack': require('./EBMLElement/CueTrack').default,
  'CueClusterPosition': require('./EBMLElement/CueClusterPosition').default,
  'CueRelativePosition': require('./EBMLElement/CueRelativePosition').default,
  'CueDuration': require('./EBMLElement/CueDuration').default,
  'CueBlockNumber': require('./EBMLElement/CueBlockNumber').default,
  // Level-1 element - Chapters
  'Chapters': require('./EBMLElement/Chapters').default,
  'EditionEntry': require('./EBMLElement/EditionEntry').default,
  'ChapterAtom': require('./EBMLElement/ChapterAtom').default,
  'ChapterUID': require('./EBMLElement/ChapterUID').default,
  'ChapterStringUID': require('./EBMLElement/ChapterStringUID').default,
  'ChapterTimeStart': require('./EBMLElement/ChapterTimeStart').default,
  'ChapterTimeEnd': require('./EBMLElement/ChapterTimeEnd').default,
  'ChapterDisplay': require('./EBMLElement/ChapterDisplay').default,
  'ChapString': require('./EBMLElement/ChapString').default,
  'ChapLanguage': require('./EBMLElement/ChapLanguage').default,
  'ChapCountry': require('./EBMLElement/ChapCountry').default,
  // Level-1 element - Tags
  'Tags': require('./EBMLElement/Tags').default,
  'Tag': require('./EBMLElement/Tag').default,
  'Targets': require('./EBMLElement/Targets').default,
  'TargetTypeValue': require('./EBMLElement/TargetTypeValue').default,
  'TargetType': require('./EBMLElement/TargetType').default,
  'TagTrackUID': require('./EBMLElement/TagTrackUID').default,
  'SimpleTag': require('./EBMLElement/SimpleTag').default,
  'TagName': require('./EBMLElement/TagName').default,
  'TagLanguage': require('./EBMLElement/TagLanguage').default,
  'TagDefault': require('./EBMLElement/TagDefault').default,
  'TagString': require('./EBMLElement/TagString').default,
  'TagBinary': require('./EBMLElement/TagBinary').default
};

var CLASS_D_IDS = [clazz['EBML'], clazz['Segment'], clazz['SeekHead'], clazz['Info'], clazz['Cluster'], clazz['Tracks'], clazz['Cues'], clazz['Chapters'], clazz['Tags']];

var CLASS_C_IDS = [clazz['TimecodeScale'], clazz['DefaultDuration'], clazz['Language'], clazz['CodecName']];

var CLASS_B_IDS = [clazz['EBMLVersion'], clazz['EBMLReadVersion'], clazz['EBMLMaxIDLength'], clazz['EBMLMaxSizeLength'], clazz['DocType'], clazz['DocTypeVersion'], clazz['DocTypeReadVersion'], clazz['Seek'], clazz['SeekID'], clazz['SeekPosition'], clazz['SegmentUID'], clazz['Duration'], clazz['DateUTC'], clazz['Title'], clazz['MuxingApp'], clazz['WritingApp'], clazz['BlockAdditions'], clazz['DiscardPadding'], clazz['TrackUID'], clazz['FlagForced'], clazz['Name'], clazz['CodecPrivate'], clazz['CodecDelay'], clazz['SeekPreRoll'], clazz['StereoMode'], clazz['AlphaMode'], clazz['PixelCropBottom'], clazz['PixelCropTop'], clazz['PixelCropLeft'], clazz['PixelCropRight'], clazz['DisplayWidth'], clazz['DisplayHeight'], clazz['DisplayUnit'], clazz['AspectRatioType'], clazz['OutputSamplingFrequency'], clazz['BitDepth'], clazz['ContentEncodings'], clazz['ContentEncoding'], clazz['ContentEncodingOrder'], clazz['ContentEncodingScope'], clazz['ContentEncodingType'], clazz['ContentEncryption'], clazz['ContentEncAlgo'], clazz['ContentEncKeyID'], clazz['ContentEncAESSettings'], clazz['AESSettingsCipherMode'], clazz['CueBlockNumber'], clazz['EditionEntry'], clazz['ChapterUID'], clazz['ChapterStringUID'], clazz['ChapLanguage'], clazz['ChapCountry'], clazz['Tag'], clazz['Targets'], clazz['TargetTypeValue'], clazz['TargetType'], clazz['TagTrackUID'], clazz['SimpleTag'], clazz['TagName'], clazz['TagLanguage'], clazz['TagDefault'], clazz['TagString'], clazz['TagBinary']];

var CLASS_A_IDS = [clazz['Void'], clazz['Timecode'], clazz['PrevSize'], clazz['SimpleBlock'], clazz['BlockGroup'], clazz['Block'], clazz['BlockMore'], clazz['BlockAddID'], clazz['BlockAdditional'], clazz['BlockDuration'], clazz['ReferenceBlock'], clazz['TrackEntry'], clazz['TrackNumber'], clazz['TrackType'], clazz['FlagEnabled'], clazz['FlagDefault'], clazz['FlagLacing'], clazz['CodecID'], clazz['Video'], clazz['FlagInterlaced'], clazz['PixelWidth'], clazz['PixelHeight'], clazz['Audio'], clazz['SamplingFrequency'], clazz['Channels'], clazz['CuePoint'], clazz['CueTime'], clazz['CueTrackPositions'], clazz['CueTrack'], clazz['CueClusterPosition'], clazz['CueRelativePosition'], clazz['CueDuration'], clazz['ChapterAtom'], clazz['ChapterTimeStart'], clazz['ChapterTimeEnd'], clazz['ChapterDisplay'], clazz['ChapString']];

var CLASS_A_INDICES = CLASS_A_IDS.map(function (item) {
  return item.ELEMENT_ID[0];
});
var CLASS_B_INDICES = null;
var CLASS_C_INDICES = CLASS_C_IDS.map(function (item) {
  return item.ELEMENT_ID[0];
});
var CLASS_D_INDICES = CLASS_D_IDS.map(function (item) {
  return item.ELEMENT_ID[0];
});

var CLASS_LOOKUP_TABLE = [{
  indices: CLASS_A_INDICES,
  idList: CLASS_A_IDS
}, {
  indices: CLASS_B_INDICES,
  idList: CLASS_B_IDS
}, {
  indices: CLASS_C_INDICES,
  idList: CLASS_C_IDS
}, {
  indices: CLASS_D_INDICES,
  idList: CLASS_D_IDS
}];

function lookupByName(name) {
  return clazz[name];
}

function lookupById(id) {
  var failIfUnknown = arguments.length <= 1 || arguments[1] === undefined ? false : arguments[1];

  var table = CLASS_LOOKUP_TABLE[id.length - 1];
  var indices = table.indices;
  var elementClass = void 0;

  if (indices) {
    var index = indices.indexOf(id[0]);
    if (index !== -1) {
      elementClass = table.idList[index];
    }
  } else {
    elementClass = table.idList.find(function (item) {
      var bytes = item.ELEMENT_ID;
      for (var i = 0; i < bytes.length; i++) {
        if (bytes[i] !== id[i]) {
          return false;
        }
      }
      return true;
    });
  }

  if (!elementClass) {
    if (failIfUnknown) {
      (0, _Util.throwException)('Matroska.lookupById: Unknown element id ' + id);
    }
    return (0, _Unknown2.default)(id);
  }
  return elementClass;
}

exports.default = {
  lookupByName: lookupByName,
  lookupById: lookupById
};