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> 14538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 15538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber#define kVorbisPrivateMaxSize 4000 16538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 17ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuangvoid writeHeader(EbmlGlobal *glob) { 18ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang EbmlLoc start; 19ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(glob, &start, EBML); 20ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, EBMLVersion, 1); 21ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, EBMLReadVersion, 1); // EBML Read Version 22ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, EBMLMaxIDLength, 4); // EBML Max ID Length 23ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, EBMLMaxSizeLength, 8); // EBML Max Size Length 24ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeString(glob, DocType, "webm"); // Doc Type 25ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, DocTypeVersion, 2); // Doc Type Version 26ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, DocTypeReadVersion, 2); // Doc Type Read Version 27ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_EndSubElement(glob, &start); 28538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 29538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 30538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid writeSimpleBlock(EbmlGlobal *glob, unsigned char trackNumber, short timeCode, 31538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber int isKeyframe, unsigned char lacingFlag, int discardable, 32ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang unsigned char *data, unsigned long dataLength) { 33ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_WriteID(glob, SimpleBlock); 34ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang unsigned long blockLength = 4 + dataLength; 35ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang blockLength |= 0x10000000; // TODO check length < 0x0FFFFFFFF 36ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_Serialize(glob, &blockLength, sizeof(blockLength), 4); 37ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang trackNumber |= 0x80; // TODO check track nubmer < 128 38ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_Write(glob, &trackNumber, 1); 39ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang // Ebml_WriteSigned16(glob, timeCode,2); //this is 3 bytes 40ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_Serialize(glob, &timeCode, sizeof(timeCode), 2); 41ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang unsigned char flags = 0x00 | (isKeyframe ? 0x80 : 0x00) | (lacingFlag << 1) | discardable; 42ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_Write(glob, &flags, 1); 43ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_Write(glob, data, dataLength); 44ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 45ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 46ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuangstatic UInt64 generateTrackID(unsigned int trackNumber) { 47ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang UInt64 t = time(NULL) * trackNumber; 48ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang UInt64 r = rand(); 49ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang r = r << 32; 50ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang r += rand(); 51ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang UInt64 rval = t ^ r; 52ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang return rval; 53538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 54538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 55538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid writeVideoTrack(EbmlGlobal *glob, unsigned int trackNumber, int flagLacing, 56538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber char *codecId, unsigned int pixelWidth, unsigned int pixelHeight, 57ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang double frameRate) { 58ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang EbmlLoc start; 59ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(glob, &start, TrackEntry); 60ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, TrackNumber, trackNumber); 61ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang UInt64 trackID = generateTrackID(trackNumber); 62ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, TrackUID, trackID); 63ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeString(glob, CodecName, "VP8"); // TODO shouldn't be fixed 64ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 65ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, TrackType, 1); // video is always 1 66ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeString(glob, CodecID, codecId); 67ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang { 68ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang EbmlLoc videoStart; 69ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(glob, &videoStart, Video); 70ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, PixelWidth, pixelWidth); 71ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, PixelHeight, pixelHeight); 72ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeFloat(glob, FrameRate, frameRate); 73ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_EndSubElement(glob, &videoStart); // Video 74ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 75ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_EndSubElement(glob, &start); // Track Entry 76538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 77538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid writeAudioTrack(EbmlGlobal *glob, unsigned int trackNumber, int flagLacing, 78538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber char *codecId, double samplingFrequency, unsigned int channels, 79ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang unsigned char *private, unsigned long privateSize) { 80ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang EbmlLoc start; 81ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(glob, &start, TrackEntry); 82ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, TrackNumber, trackNumber); 83ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang UInt64 trackID = generateTrackID(trackNumber); 84ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, TrackUID, trackID); 85ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, TrackType, 2); // audio is always 2 86ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang // I am using defaults for thesed required fields 87ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang /* Ebml_SerializeUnsigned(glob, FlagEnabled, 1); 88ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, FlagDefault, 1); 89ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, FlagForced, 1); 90ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, FlagLacing, flagLacing);*/ 91ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeString(glob, CodecID, codecId); 92ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeData(glob, CodecPrivate, private, privateSize); 93ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang 94ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeString(glob, CodecName, "VORBIS"); // fixed for now 95ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang { 96ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang EbmlLoc AudioStart; 97ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(glob, &AudioStart, Audio); 98ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeFloat(glob, SamplingFrequency, samplingFrequency); 99ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(glob, Channels, channels); 100ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_EndSubElement(glob, &AudioStart); 101ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang } 102ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_EndSubElement(glob, &start); 103ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang} 104ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuangvoid writeSegmentInformation(EbmlGlobal *ebml, EbmlLoc *startInfo, unsigned long timeCodeScale, double duration) { 105ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(ebml, startInfo, Info); 106ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeUnsigned(ebml, TimecodeScale, timeCodeScale); 107ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeFloat(ebml, Segment_Duration, duration * 1000.0); // Currently fixed to using milliseconds 108ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeString(ebml, 0x4D80, "QTmuxingAppLibWebM-0.0.1"); 109ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_SerializeString(ebml, 0x5741, "QTwritingAppLibWebM-0.0.1"); 110ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_EndSubElement(ebml, startInfo); 111538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 112538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 113538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber/* 114538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_InitializeSegment(Ebml& ebml_out, EbmlLoc& ebmlLoc) 115538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 116538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_StartSubElement(ebml_out, ebmlLoc, 0x18538067); 117538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 118538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 119538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_InitializeSeek(Ebml& ebml_out, EbmlLoc& ebmlLoc) 120538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 121538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_StartSubElement(ebml_out, ebmlLoc, 0x114d9b74); 122538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 123538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_WriteSeekInformation(Ebml& ebml_out, SeekStruct& seekInformation) 124538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 125538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber EbmlLoc ebmlLoc; 126538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_StartSubElement(ebml_out, ebmlLoc, 0x4dbb); 127538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeString(ebml_out, 0x53ab, seekInformation.SeekID); 128538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x53ac, seekInformation.SeekPosition); 129538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_EndSubElement(ebml_out, ebmlLoc); 130538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 131538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 132538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_WriteSegmentInformation(Ebml& ebml_out, SegmentInformationStruct& segmentInformation) 133538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 134538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x73a4, segmentInformation.segmentUID); 135538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber if (segmentInformation.filename != 0) 136538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeString(ebml_out, 0x7384, segmentInformation.filename); 137538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x2AD7B1, segmentInformation.TimecodeScale); 138538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x4489, segmentInformation.Duration); 139ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang // TODO date 140538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeWString(ebml_out, 0x4D80, L"MKVMUX"); 141538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeWString(ebml_out, 0x5741, segmentInformation.WritingApp); 142538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 143538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 144538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_InitializeTrack(Ebml& ebml_out, EbmlLoc& ebmlLoc) 145538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 146538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_StartSubElement(ebml_out, ebmlLoc, 0x1654AE6B); 147538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 148538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 149538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huberstatic void Mkv_WriteGenericTrackData(Ebml& ebml_out, TrackStruct& track) 150538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 151538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0xD7, track.TrackNumber); 152538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x73C5, track.TrackUID); 153538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x83, track.TrackType); 154538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0xB9, track.FlagEnabled ? 1 :0); 155538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x88, track.FlagDefault ? 1 :0); 156538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x55AA, track.FlagForced ? 1 :0); 157538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber if (track.Language != 0) 158538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeString(ebml_out, 0x22B59C, track.Language); 159538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber if (track.CodecID != 0) 160538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeString(ebml_out, 0x86, track.CodecID); 161538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber if (track.CodecPrivate != 0) 162538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeData(ebml_out, 0x63A2, track.CodecPrivate, track.CodecPrivateLength); 163538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber if (track.CodecName != 0) 164538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeWString(ebml_out, 0x258688, track.CodecName); 165538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 166538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 167538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_WriteVideoTrack(Ebml& ebml_out, TrackStruct & track, VideoTrackStruct& video) 168538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 169538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber EbmlLoc trackHeadLoc, videoHeadLoc; 170ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(ebml_out, trackHeadLoc, 0xAE); // start Track 171538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Mkv_WriteGenericTrackData(ebml_out, track); 172ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(ebml_out, videoHeadLoc, 0xE0); // start Video 173538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x9A, video.FlagInterlaced ? 1 :0); 174538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0xB0, video.PixelWidth); 175538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0xBA, video.PixelHeight); 176538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x54B0, video.PixelDisplayWidth); 177538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x54BA, video.PixelDisplayHeight); 178538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x54B2, video.displayUnit); 179538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeFloat(ebml_out, 0x2383E3, video.FrameRate); 180538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_EndSubElement(ebml_out, videoHeadLoc); 181538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_EndSubElement(ebml_out, trackHeadLoc); 182538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 183538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 184538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 185538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_WriteAudioTrack(Ebml& ebml_out, TrackStruct & track, AudioTrackStruct& video) 186538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 187538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber EbmlLoc trackHeadLoc, audioHeadLoc; 188538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_StartSubElement(ebml_out, trackHeadLoc, 0xAE); 189538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Mkv_WriteGenericTrackData(ebml_out, track); 190ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_StartSubElement(ebml_out, audioHeadLoc, 0xE0); // start Audio 191538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeFloat(ebml_out, 0xB5, video.SamplingFrequency); 192538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x9F, video.Channels); 193538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x6264, video.BitDepth); 194538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_EndSubElement(ebml_out, audioHeadLoc); // end audio 195538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_EndSubElement(ebml_out, trackHeadLoc); 196538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 197538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 198538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_WriteEbmlClusterHead(Ebml& ebml_out, EbmlLoc& ebmlLoc, ClusterHeadStruct & clusterHead) 199538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 200538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_StartSubElement(ebml_out, ebmlLoc, 0x1F43B675); 201538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_SerializeUnsigned(ebml_out, 0x6264, clusterHead.TimeCode); 202538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 203538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber 204538f6170b788de7408b06efc6613dc98579aa6a6Andreas Hubervoid Mkv_WriteSimpleBlockHead(Ebml& ebml_out, EbmlLoc& ebmlLoc, SimpleBlockStruct& block) 205538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber{ 206538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_StartSubElement(ebml_out, ebmlLoc, 0xA3); 207538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_Write1UInt(ebml_out, block.TrackNumber); 208538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_WriteSigned16(ebml_out,block.TimeCode); 209538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber unsigned char flags = 0x00 | (block.iskey ? 0x80:0x00) | (block.lacing << 1) | block.discardable; 210ba164dffc5a6795bce97fae02b51ccf3330e15e4hkuang Ebml_Write1UInt(ebml_out, flags); // TODO this may be the wrong function 211538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_Serialize(ebml_out, block.data, block.dataLength); 212538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber Ebml_EndSubElement(ebml_out,ebmlLoc); 213538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber} 214538f6170b788de7408b06efc6613dc98579aa6a6Andreas Huber*/ 215