WebMElement.c revision b08e2e23eec181e9951df33cd704ac294c5407b6
1538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber// Copyright (c) 2010 The WebM project authors. All Rights Reserved. 2538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber// 3538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber// Use of this source code is governed by a BSD-style license 4538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber// that can be found in the LICENSE file in the root of the source 5538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber// tree. An additional intellectual property rights grant can be found 6538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber// in the file PATENTS. All contributing project authors may 7538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber// be found in the AUTHORS file in the root of the source tree. 8538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 9538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 10538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber#include "EbmlBufferWriter.h" 11538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber#include "EbmlIDs.h" 12538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber#include "WebMElement.h" 13538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber#include <stdio.h> 14b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian#include "vpx/vpx_integer.h" 15538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 16538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber#define kVorbisPrivateMaxSize 4000 17538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 18ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuangvoid writeHeader(EbmlGlobal *glob) { 19ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang EbmlLoc start; 20ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(glob, &start, EBML); 21ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, EBMLVersion, 1); 22ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, EBMLReadVersion, 1); // EBML Read Version 23ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, EBMLMaxIDLength, 4); // EBML Max ID Length 24ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, EBMLMaxSizeLength, 8); // EBML Max Size Length 25ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeString(glob, DocType, "webm"); // Doc Type 26ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, DocTypeVersion, 2); // Doc Type Version 27ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, DocTypeReadVersion, 2); // Doc Type Read Version 28ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_EndSubElement(glob, &start); 29538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 30538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 31538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid writeSimpleBlock(EbmlGlobal *glob, unsigned char trackNumber, short timeCode, 32538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber int isKeyframe, unsigned char lacingFlag, int discardable, 33ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang unsigned char *data, unsigned long dataLength) { 34ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_WriteID(glob, SimpleBlock); 35ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang unsigned long blockLength = 4 + dataLength; 36ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang blockLength |= 0x10000000; // TODO check length < 0x0FFFFFFFF 37ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_Serialize(glob, &blockLength, sizeof(blockLength), 4); 38ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang trackNumber |= 0x80; // TODO check track nubmer < 128 39ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_Write(glob, &trackNumber, 1); 40ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang // Ebml_WriteSigned16(glob, timeCode,2); //this is 3 bytes 41ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_Serialize(glob, &timeCode, sizeof(timeCode), 2); 42ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang unsigned char flags = 0x00 | (isKeyframe ? 0x80 : 0x00) | (lacingFlag << 1) | discardable; 43ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_Write(glob, &flags, 1); 44ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_Write(glob, data, dataLength); 45ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 46ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 47b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanianstatic uint64_t generateTrackID(unsigned int trackNumber) { 48b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian uint64_t t = time(NULL) * trackNumber; 49b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian uint64_t r = rand(); 50ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang r = r << 32; 51ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang r += rand(); 52b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian uint64_t rval = t ^ r; 53ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang return rval; 54538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 55538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 56b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanianvoid writeVideoTrack(EbmlGlobal *glob, unsigned int trackNumber, 57b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian int flagLacing, const char *codecId, 58b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian unsigned int pixelWidth, unsigned int pixelHeight, 59ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang double frameRate) { 60ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang EbmlLoc start; 61ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(glob, &start, TrackEntry); 62ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, TrackNumber, trackNumber); 63b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian uint64_t trackID = generateTrackID(trackNumber); 64ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, TrackUID, trackID); 65ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeString(glob, CodecName, "VP8"); // TODO shouldn't be fixed 66ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 67ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, TrackType, 1); // video is always 1 68ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeString(glob, CodecID, codecId); 69ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang { 70ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang EbmlLoc videoStart; 71ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(glob, &videoStart, Video); 72ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, PixelWidth, pixelWidth); 73ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, PixelHeight, pixelHeight); 74ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeFloat(glob, FrameRate, frameRate); 75ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_EndSubElement(glob, &videoStart); // Video 76ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 77ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_EndSubElement(glob, &start); // Track Entry 78538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 79b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanianvoid writeAudioTrack(EbmlGlobal *glob, unsigned int trackNumber, 80b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian int flagLacing, const char *codecId, 81b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian double samplingFrequency, unsigned int channels, 82ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang unsigned char *private, unsigned long privateSize) { 83ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang EbmlLoc start; 84ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(glob, &start, TrackEntry); 85ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, TrackNumber, trackNumber); 86b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian uint64_t trackID = generateTrackID(trackNumber); 87ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, TrackUID, trackID); 88ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, TrackType, 2); // audio is always 2 89ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang // I am using defaults for thesed required fields 90ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang /* Ebml_SerializeUnsigned(glob, FlagEnabled, 1); 91ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, FlagDefault, 1); 92ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, FlagForced, 1); 93ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, FlagLacing, flagLacing);*/ 94ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeString(glob, CodecID, codecId); 95ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeData(glob, CodecPrivate, private, privateSize); 96ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 97ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeString(glob, CodecName, "VORBIS"); // fixed for now 98ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang { 99ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang EbmlLoc AudioStart; 100ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(glob, &AudioStart, Audio); 101ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeFloat(glob, SamplingFrequency, samplingFrequency); 102ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, Channels, channels); 103ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_EndSubElement(glob, &AudioStart); 104ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 105ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_EndSubElement(glob, &start); 106ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 107ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuangvoid writeSegmentInformation(EbmlGlobal *ebml, EbmlLoc *startInfo, unsigned long timeCodeScale, double duration) { 108ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(ebml, startInfo, Info); 109ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(ebml, TimecodeScale, timeCodeScale); 110ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeFloat(ebml, Segment_Duration, duration * 1000.0); // Currently fixed to using milliseconds 111ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeString(ebml, 0x4D80, "QTmuxingAppLibWebM-0.0.1"); 112ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeString(ebml, 0x5741, "QTwritingAppLibWebM-0.0.1"); 113ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_EndSubElement(ebml, startInfo); 114538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 115538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 116538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber/* 117538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_InitializeSegment(Ebml& ebml_out, EbmlLoc& ebmlLoc) 118538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 119538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_StartSubElement(ebml_out, ebmlLoc, 0x18538067); 120538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 121538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 122538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_InitializeSeek(Ebml& ebml_out, EbmlLoc& ebmlLoc) 123538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 124538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_StartSubElement(ebml_out, ebmlLoc, 0x114d9b74); 125538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 126538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_WriteSeekInformation(Ebml& ebml_out, SeekStruct& seekInformation) 127538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 128538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber EbmlLoc ebmlLoc; 129538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_StartSubElement(ebml_out, ebmlLoc, 0x4dbb); 130538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeString(ebml_out, 0x53ab, seekInformation.SeekID); 131538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x53ac, seekInformation.SeekPosition); 132538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_EndSubElement(ebml_out, ebmlLoc); 133538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 134538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 135538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_WriteSegmentInformation(Ebml& ebml_out, SegmentInformationStruct& segmentInformation) 136538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 137538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x73a4, segmentInformation.segmentUID); 138538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber if (segmentInformation.filename != 0) 139538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeString(ebml_out, 0x7384, segmentInformation.filename); 140538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x2AD7B1, segmentInformation.TimecodeScale); 141538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x4489, segmentInformation.Duration); 142ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang // TODO date 143538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeWString(ebml_out, 0x4D80, L"MKVMUX"); 144538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeWString(ebml_out, 0x5741, segmentInformation.WritingApp); 145538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 146538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 147538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_InitializeTrack(Ebml& ebml_out, EbmlLoc& ebmlLoc) 148538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 149538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_StartSubElement(ebml_out, ebmlLoc, 0x1654AE6B); 150538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 151538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 152538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huberstatic void Mkv_WriteGenericTrackData(Ebml& ebml_out, TrackStruct& track) 153538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 154538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0xD7, track.TrackNumber); 155538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x73C5, track.TrackUID); 156538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x83, track.TrackType); 157538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0xB9, track.FlagEnabled ? 1 :0); 158538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x88, track.FlagDefault ? 1 :0); 159538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x55AA, track.FlagForced ? 1 :0); 160538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber if (track.Language != 0) 161538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeString(ebml_out, 0x22B59C, track.Language); 162538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber if (track.CodecID != 0) 163538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeString(ebml_out, 0x86, track.CodecID); 164538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber if (track.CodecPrivate != 0) 165538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeData(ebml_out, 0x63A2, track.CodecPrivate, track.CodecPrivateLength); 166538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber if (track.CodecName != 0) 167538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeWString(ebml_out, 0x258688, track.CodecName); 168538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 169538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 170538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_WriteVideoTrack(Ebml& ebml_out, TrackStruct & track, VideoTrackStruct& video) 171538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 172538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber EbmlLoc trackHeadLoc, videoHeadLoc; 173ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(ebml_out, trackHeadLoc, 0xAE); // start Track 174538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Mkv_WriteGenericTrackData(ebml_out, track); 175ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(ebml_out, videoHeadLoc, 0xE0); // start Video 176538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x9A, video.FlagInterlaced ? 1 :0); 177538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0xB0, video.PixelWidth); 178538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0xBA, video.PixelHeight); 179538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x54B0, video.PixelDisplayWidth); 180538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x54BA, video.PixelDisplayHeight); 181538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x54B2, video.displayUnit); 182538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeFloat(ebml_out, 0x2383E3, video.FrameRate); 183538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_EndSubElement(ebml_out, videoHeadLoc); 184538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_EndSubElement(ebml_out, trackHeadLoc); 185538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 186538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 187538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 188538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_WriteAudioTrack(Ebml& ebml_out, TrackStruct & track, AudioTrackStruct& video) 189538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 190538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber EbmlLoc trackHeadLoc, audioHeadLoc; 191538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_StartSubElement(ebml_out, trackHeadLoc, 0xAE); 192538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Mkv_WriteGenericTrackData(ebml_out, track); 193ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(ebml_out, audioHeadLoc, 0xE0); // start Audio 194538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeFloat(ebml_out, 0xB5, video.SamplingFrequency); 195538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x9F, video.Channels); 196538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x6264, video.BitDepth); 197538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_EndSubElement(ebml_out, audioHeadLoc); // end audio 198538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_EndSubElement(ebml_out, trackHeadLoc); 199538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 200538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 201538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_WriteEbmlClusterHead(Ebml& ebml_out, EbmlLoc& ebmlLoc, ClusterHeadStruct & clusterHead) 202538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 203538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_StartSubElement(ebml_out, ebmlLoc, 0x1F43B675); 204538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x6264, clusterHead.TimeCode); 205538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 206538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 207538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_WriteSimpleBlockHead(Ebml& ebml_out, EbmlLoc& ebmlLoc, SimpleBlockStruct& block) 208538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 209538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_StartSubElement(ebml_out, ebmlLoc, 0xA3); 210538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_Write1UInt(ebml_out, block.TrackNumber); 211538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_WriteSigned16(ebml_out,block.TimeCode); 212538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber unsigned char flags = 0x00 | (block.iskey ? 0x80:0x00) | (block.lacing << 1) | block.discardable; 213ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_Write1UInt(ebml_out, flags); // TODO this may be the wrong function 214538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_Serialize(ebml_out, block.data, block.dataLength); 215538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_EndSubElement(ebml_out,ebmlLoc); 216538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 217538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber*/ 218