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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef WEBMCONSTANTS_H_
     18 #define WEBMCONSTANTS_H_
     19 
     20 #include <stdint.h>
     21 
     22 namespace webm {
     23 
     24 const int kMinEbmlVoidSize = 2;
     25 const int64_t kMaxMetaSeekSize = 64;
     26 const int64_t kMkvUnknownLength = 0x01ffffffffffffffl;
     27 
     28 // EBML element id's from http://matroska.org/technical/specs/index.html
     29 enum Mkv {
     30     kMkvEbml = 0x1A45DFA3,
     31     kMkvEbmlVersion = 0x4286,
     32     kMkvEbmlReadVersion = 0x42F7,
     33     kMkvEbmlMaxIdlength = 0x42F2,
     34     kMkvEbmlMaxSizeLength = 0x42F3,
     35     kMkvDocType = 0x4282,
     36     kMkvDocTypeVersion = 0x4287,
     37     kMkvDocTypeReadVersion = 0x4285,
     38     kMkvVoid = 0xEC,
     39     kMkvSignatureSlot = 0x1B538667,
     40     kMkvSignatureAlgo = 0x7E8A,
     41     kMkvSignatureHash = 0x7E9A,
     42     kMkvSignaturePublicKey = 0x7EA5,
     43     kMkvSignature = 0x7EB5,
     44     kMkvSignatureElements = 0x7E5B,
     45     kMkvSignatureElementList = 0x7E7B,
     46     kMkvSignedElement = 0x6532,
     47     kMkvSegment = 0x18538067,
     48     kMkvSeekHead = 0x114D9B74,
     49     kMkvSeek = 0x4DBB,
     50     kMkvSeekId = 0x53AB,
     51     kMkvSeekPosition = 0x53AC,
     52     kMkvInfo = 0x1549A966,
     53     kMkvTimecodeScale = 0x2AD7B1,
     54     kMkvSegmentDuration = 0x4489,
     55     kMkvDateUtc = 0x4461,
     56     kMkvMuxingApp = 0x4D80,
     57     kMkvWritingApp = 0x5741,
     58     kMkvCluster = 0x1F43B675,
     59     kMkvTimecode = 0xE7,
     60     kMkvPrevSize = 0xAB,
     61     kMkvBlockGroup = 0xA0,
     62     kMkvBlock = 0xA1,
     63     kMkvBlockAdditions = 0x75A1,
     64     kMkvBlockMore = 0xA6,
     65     kMkvBlockAddId = 0xEE,
     66     kMkvBlockAdditional = 0xA5,
     67     kMkvBlockDuration = 0x9B,
     68     kMkvReferenceBlock = 0xFB,
     69     kMkvLaceNumber = 0xCC,
     70     kMkvSimpleBlock = 0xA3,
     71     kMkvTracks = 0x1654AE6B,
     72     kMkvTrackEntry = 0xAE,
     73     kMkvTrackNumber = 0xD7,
     74     kMkvTrackUid = 0x73C5,
     75     kMkvTrackType = 0x83,
     76     kMkvFlagEnabled = 0xB9,
     77     kMkvFlagDefault = 0x88,
     78     kMkvFlagForced = 0x55AA,
     79     kMkvFlagLacing = 0x9C,
     80     kMkvDefaultDuration = 0x23E383,
     81     kMkvMaxBlockAdditionId = 0x55EE,
     82     kMkvName = 0x536E,
     83     kMkvLanguage = 0x22B59C,
     84     kMkvCodecId = 0x86,
     85     kMkvCodecPrivate = 0x63A2,
     86     kMkvCodecName = 0x258688,
     87     kMkvVideo = 0xE0,
     88     kMkvFlagInterlaced = 0x9A,
     89     kMkvStereoMode = 0x53B8,
     90     kMkvAlphaMode = 0x53C0,
     91     kMkvPixelWidth = 0xB0,
     92     kMkvPixelHeight = 0xBA,
     93     kMkvPixelCropBottom = 0x54AA,
     94     kMkvPixelCropTop = 0x54BB,
     95     kMkvPixelCropLeft = 0x54CC,
     96     kMkvPixelCropRight = 0x54DD,
     97     kMkvDisplayWidth = 0x54B0,
     98     kMkvDisplayHeight = 0x54BA,
     99     kMkvDisplayUnit = 0x54B2,
    100     kMkvAspectRatioType = 0x54B3,
    101     kMkvFrameRate = 0x2383E3,
    102     kMkvAudio = 0xE1,
    103     kMkvSamplingFrequency = 0xB5,
    104     kMkvOutputSamplingFrequency = 0x78B5,
    105     kMkvChannels = 0x9F,
    106     kMkvBitDepth = 0x6264,
    107     kMkvCues = 0x1C53BB6B,
    108     kMkvCuePoint = 0xBB,
    109     kMkvCueTime = 0xB3,
    110     kMkvCueTrackPositions = 0xB7,
    111     kMkvCueTrack = 0xF7,
    112     kMkvCueClusterPosition = 0xF1,
    113     kMkvCueBlockNumber = 0x5378
    114 };
    115 
    116 enum TrackTypes {
    117     kInvalidType = -1,
    118     kVideoType = 0x1,
    119     kAudioType = 0x2,
    120     kComplexType = 0x3,
    121     kLogoType = 0x10,
    122     kSubtitleType = 0x11,
    123     kButtonsType = 0x12,
    124     kControlType = 0x20
    125 };
    126 
    127 enum TrackNum {
    128     kVideoTrackNum = 0x1,
    129     kAudioTrackNum = 0x2
    130 };
    131 }
    132 
    133 #endif /* WEBMCONSTANTS_H_ */
    134