[69684] | 1 | /* $Id: WebMWriter.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
|
---|
| 2 | /** @file
|
---|
| 3 | * WebMWriter.cpp - WebM container handling.
|
---|
| 4 | */
|
---|
| 5 |
|
---|
| 6 | /*
|
---|
[98103] | 7 | * Copyright (C) 2013-2023 Oracle and/or its affiliates.
|
---|
[69684] | 8 | *
|
---|
[96407] | 9 | * This file is part of VirtualBox base platform packages, as
|
---|
| 10 | * available from https://www.virtualbox.org.
|
---|
| 11 | *
|
---|
| 12 | * This program is free software; you can redistribute it and/or
|
---|
| 13 | * modify it under the terms of the GNU General Public License
|
---|
| 14 | * as published by the Free Software Foundation, in version 3 of the
|
---|
| 15 | * License.
|
---|
| 16 | *
|
---|
| 17 | * This program is distributed in the hope that it will be useful, but
|
---|
| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
---|
| 20 | * General Public License for more details.
|
---|
| 21 | *
|
---|
| 22 | * You should have received a copy of the GNU General Public License
|
---|
| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
|
---|
| 24 | *
|
---|
| 25 | * SPDX-License-Identifier: GPL-3.0-only
|
---|
[69684] | 26 | */
|
---|
| 27 |
|
---|
| 28 | /**
|
---|
| 29 | * For more information, see:
|
---|
| 30 | * - https://w3c.github.io/media-source/webm-byte-stream-format.html
|
---|
| 31 | * - https://www.webmproject.org/docs/container/#muxer-guidelines
|
---|
| 32 | */
|
---|
| 33 |
|
---|
[96140] | 34 | #define LOG_GROUP LOG_GROUP_RECORDING
|
---|
[69684] | 35 | #include "LoggingNew.h"
|
---|
| 36 |
|
---|
[76760] | 37 | #include <iprt/buildconfig.h>
|
---|
[82427] | 38 | #include <iprt/errcore.h>
|
---|
| 39 |
|
---|
[69684] | 40 | #include <VBox/version.h>
|
---|
| 41 |
|
---|
[96175] | 42 | #include "RecordingInternals.h"
|
---|
[69684] | 43 | #include "WebMWriter.h"
|
---|
| 44 |
|
---|
| 45 |
|
---|
| 46 | WebMWriter::WebMWriter(void)
|
---|
| 47 | {
|
---|
| 48 | /* Size (in bytes) of time code to write. We use 2 bytes (16 bit) by default. */
|
---|
| 49 | m_cbTimecode = 2;
|
---|
| 50 | m_uTimecodeMax = UINT16_MAX;
|
---|
| 51 |
|
---|
| 52 | m_fInTracksSection = false;
|
---|
| 53 | }
|
---|
| 54 |
|
---|
| 55 | WebMWriter::~WebMWriter(void)
|
---|
| 56 | {
|
---|
[70622] | 57 | Close();
|
---|
[69684] | 58 | }
|
---|
| 59 |
|
---|
| 60 | /**
|
---|
| 61 | * Opens (creates) an output file using an already open file handle.
|
---|
| 62 | *
|
---|
| 63 | * @returns VBox status code.
|
---|
| 64 | * @param a_pszFilename Name of the file the file handle points at.
|
---|
| 65 | * @param a_phFile Pointer to open file handle to use.
|
---|
| 66 | * @param a_enmAudioCodec Audio codec to use.
|
---|
| 67 | * @param a_enmVideoCodec Video codec to use.
|
---|
| 68 | */
|
---|
| 69 | int WebMWriter::OpenEx(const char *a_pszFilename, PRTFILE a_phFile,
|
---|
[96175] | 70 | RecordingAudioCodec_T a_enmAudioCodec, RecordingVideoCodec_T a_enmVideoCodec)
|
---|
[69684] | 71 | {
|
---|
| 72 | try
|
---|
| 73 | {
|
---|
| 74 | LogFunc(("Creating '%s'\n", a_pszFilename));
|
---|
| 75 |
|
---|
[94962] | 76 | int vrc = createEx(a_pszFilename, a_phFile);
|
---|
| 77 | if (RT_SUCCESS(vrc))
|
---|
[69684] | 78 | {
|
---|
[96175] | 79 | vrc = init(a_enmAudioCodec, a_enmVideoCodec);
|
---|
[94962] | 80 | if (RT_SUCCESS(vrc))
|
---|
| 81 | vrc = writeHeader();
|
---|
[69684] | 82 | }
|
---|
| 83 | }
|
---|
[94962] | 84 | catch(int vrc)
|
---|
[69684] | 85 | {
|
---|
[94962] | 86 | return vrc;
|
---|
[69684] | 87 | }
|
---|
| 88 | return VINF_SUCCESS;
|
---|
| 89 | }
|
---|
| 90 |
|
---|
| 91 | /**
|
---|
| 92 | * Opens an output file.
|
---|
| 93 | *
|
---|
| 94 | * @returns VBox status code.
|
---|
| 95 | * @param a_pszFilename Name of the file to create.
|
---|
| 96 | * @param a_fOpen File open mode of type RTFILE_O_.
|
---|
| 97 | * @param a_enmAudioCodec Audio codec to use.
|
---|
| 98 | * @param a_enmVideoCodec Video codec to use.
|
---|
| 99 | */
|
---|
| 100 | int WebMWriter::Open(const char *a_pszFilename, uint64_t a_fOpen,
|
---|
[96175] | 101 | RecordingAudioCodec_T a_enmAudioCodec, RecordingVideoCodec_T a_enmVideoCodec)
|
---|
[69684] | 102 | {
|
---|
| 103 | try
|
---|
| 104 | {
|
---|
| 105 | LogFunc(("Creating '%s'\n", a_pszFilename));
|
---|
| 106 |
|
---|
[94962] | 107 | int vrc = create(a_pszFilename, a_fOpen);
|
---|
| 108 | if (RT_SUCCESS(vrc))
|
---|
[69684] | 109 | {
|
---|
[96175] | 110 | vrc = init(a_enmAudioCodec, a_enmVideoCodec);
|
---|
[94962] | 111 | if (RT_SUCCESS(vrc))
|
---|
| 112 | vrc = writeHeader();
|
---|
[69684] | 113 | }
|
---|
| 114 | }
|
---|
[94962] | 115 | catch(int vrc)
|
---|
[69684] | 116 | {
|
---|
[94962] | 117 | return vrc;
|
---|
[69684] | 118 | }
|
---|
| 119 | return VINF_SUCCESS;
|
---|
| 120 | }
|
---|
| 121 |
|
---|
| 122 | /**
|
---|
| 123 | * Closes the WebM file and drains all queues.
|
---|
| 124 | *
|
---|
[96230] | 125 | * @returns VBox status code.
|
---|
[69684] | 126 | */
|
---|
| 127 | int WebMWriter::Close(void)
|
---|
| 128 | {
|
---|
[70622] | 129 | LogFlowFuncEnter();
|
---|
| 130 |
|
---|
[69684] | 131 | if (!isOpen())
|
---|
| 132 | return VINF_SUCCESS;
|
---|
| 133 |
|
---|
| 134 | /* Make sure to drain all queues. */
|
---|
[96324] | 135 | processQueue(&m_CurSeg.m_queueBlocks, true /* fForce */);
|
---|
[69684] | 136 |
|
---|
| 137 | writeFooter();
|
---|
| 138 |
|
---|
[96324] | 139 | WebMTracks::iterator itTrack = m_CurSeg.m_mapTracks.begin();
|
---|
| 140 | while (itTrack != m_CurSeg.m_mapTracks.end())
|
---|
[69684] | 141 | {
|
---|
| 142 | WebMTrack *pTrack = itTrack->second;
|
---|
[74781] | 143 | if (pTrack) /* Paranoia. */
|
---|
| 144 | delete pTrack;
|
---|
[69684] | 145 |
|
---|
[96324] | 146 | m_CurSeg.m_mapTracks.erase(itTrack);
|
---|
[74781] | 147 |
|
---|
[96324] | 148 | itTrack = m_CurSeg.m_mapTracks.begin();
|
---|
[69684] | 149 | }
|
---|
| 150 |
|
---|
[96324] | 151 | Assert(m_CurSeg.m_queueBlocks.Map.size() == 0);
|
---|
| 152 | Assert(m_CurSeg.m_mapTracks.size() == 0);
|
---|
[69684] | 153 |
|
---|
[76760] | 154 | com::Utf8Str strFileName = getFileName().c_str();
|
---|
[74912] | 155 |
|
---|
[69684] | 156 | close();
|
---|
| 157 |
|
---|
[95665] | 158 | return VINF_SUCCESS;
|
---|
[69684] | 159 | }
|
---|
| 160 |
|
---|
| 161 | /**
|
---|
| 162 | * Adds an audio track.
|
---|
| 163 | *
|
---|
[96230] | 164 | * @returns VBox status code.
|
---|
[96175] | 165 | * @param pCodec Audio codec to use.
|
---|
[69684] | 166 | * @param uHz Input sampling rate.
|
---|
| 167 | * Must be supported by the selected audio codec.
|
---|
| 168 | * @param cChannels Number of input audio channels.
|
---|
| 169 | * @param cBits Number of input bits per channel.
|
---|
| 170 | * @param puTrack Track number on successful creation. Optional.
|
---|
| 171 | */
|
---|
[96175] | 172 | int WebMWriter::AddAudioTrack(PRECORDINGCODEC pCodec, uint16_t uHz, uint8_t cChannels, uint8_t cBits, uint8_t *puTrack)
|
---|
[69684] | 173 | {
|
---|
[74903] | 174 | AssertReturn(uHz, VERR_INVALID_PARAMETER);
|
---|
| 175 | AssertReturn(cBits, VERR_INVALID_PARAMETER);
|
---|
| 176 | AssertReturn(cChannels, VERR_INVALID_PARAMETER);
|
---|
[69684] | 177 |
|
---|
[70623] | 178 | /* Some players (e.g. Firefox with Nestegg) rely on track numbers starting at 1.
|
---|
| 179 | * Using a track number 0 will show those files as being corrupted. */
|
---|
[96324] | 180 | const uint8_t uTrack = (uint8_t)m_CurSeg.m_mapTracks.size() + 1;
|
---|
[69684] | 181 |
|
---|
| 182 | subStart(MkvElem_TrackEntry);
|
---|
| 183 |
|
---|
| 184 | serializeUnsignedInteger(MkvElem_TrackNumber, (uint8_t)uTrack);
|
---|
| 185 | serializeString (MkvElem_Language, "und" /* "Undefined"; see ISO-639-2. */);
|
---|
| 186 | serializeUnsignedInteger(MkvElem_FlagLacing, (uint8_t)0);
|
---|
| 187 |
|
---|
[96175] | 188 | int vrc = VINF_SUCCESS;
|
---|
[69684] | 189 |
|
---|
[96175] | 190 | WebMTrack *pTrack = NULL;
|
---|
| 191 | try
|
---|
| 192 | {
|
---|
| 193 | pTrack = new WebMTrack(WebMTrackType_Audio, pCodec, uTrack, RTFileTell(getFile()));
|
---|
| 194 | }
|
---|
| 195 | catch (std::bad_alloc &)
|
---|
| 196 | {
|
---|
| 197 | vrc = VERR_NO_MEMORY;
|
---|
| 198 | }
|
---|
[69684] | 199 |
|
---|
[96175] | 200 | if (RT_SUCCESS(vrc))
|
---|
| 201 | {
|
---|
| 202 | serializeUnsignedInteger(MkvElem_TrackUID, pTrack->uUUID, 4)
|
---|
| 203 | .serializeUnsignedInteger(MkvElem_TrackType, 2 /* Audio */);
|
---|
[69684] | 204 |
|
---|
[96175] | 205 | switch (m_enmAudioCodec)
|
---|
| 206 | {
|
---|
| 207 | # ifdef VBOX_WITH_LIBVORBIS
|
---|
| 208 | case RecordingAudioCodec_OggVorbis:
|
---|
| 209 | {
|
---|
| 210 | pTrack->Audio.msPerBlock = 0; /** @todo */
|
---|
| 211 | if (!pTrack->Audio.msPerBlock) /* No ms per frame defined? Use default. */
|
---|
| 212 | pTrack->Audio.msPerBlock = VBOX_RECORDING_VORBIS_FRAME_MS_DEFAULT;
|
---|
| 213 |
|
---|
[96477] | 214 | vorbis_comment vc;
|
---|
| 215 | vorbis_comment_init(&vc);
|
---|
| 216 | vorbis_comment_add_tag(&vc,"ENCODER", vorbis_version_string());
|
---|
[96175] | 217 |
|
---|
[96477] | 218 | ogg_packet pkt_ident;
|
---|
| 219 | ogg_packet pkt_comments;
|
---|
| 220 | ogg_packet pkt_setup;
|
---|
| 221 | vorbis_analysis_headerout(&pCodec->Audio.Vorbis.dsp_state, &vc, &pkt_ident, &pkt_comments, &pkt_setup);
|
---|
| 222 | AssertMsgBreakStmt(pkt_ident.bytes <= 255 && pkt_comments.bytes <= 255,
|
---|
| 223 | ("Too long header / comment packets\n"), vrc = VERR_INVALID_PARAMETER);
|
---|
[96175] | 224 |
|
---|
[96477] | 225 | WEBMOGGVORBISPRIVDATA vorbisPrivData(pkt_ident.bytes, pkt_comments.bytes, pkt_setup.bytes);
|
---|
[96175] | 226 |
|
---|
[96477] | 227 | uint8_t *pabHdr = &vorbisPrivData.abHdr[0];
|
---|
| 228 | memcpy(pabHdr, pkt_ident.packet, pkt_ident.bytes);
|
---|
| 229 | pabHdr += pkt_ident.bytes;
|
---|
| 230 | memcpy(pabHdr, pkt_comments.packet, pkt_comments.bytes);
|
---|
| 231 | pabHdr += pkt_comments.bytes;
|
---|
| 232 | memcpy(pabHdr, pkt_setup.packet, pkt_setup.bytes);
|
---|
| 233 | pabHdr += pkt_setup.bytes;
|
---|
[96175] | 234 |
|
---|
[96477] | 235 | vorbis_comment_clear(&vc);
|
---|
[96175] | 236 |
|
---|
[96477] | 237 | size_t const offHeaders = RT_OFFSETOF(WEBMOGGVORBISPRIVDATA, abHdr);
|
---|
[96175] | 238 |
|
---|
[96477] | 239 | serializeString(MkvElem_CodecID, "A_VORBIS");
|
---|
| 240 | serializeData(MkvElem_CodecPrivate, &vorbisPrivData,
|
---|
| 241 | offHeaders + pkt_ident.bytes + pkt_comments.bytes + pkt_setup.bytes);
|
---|
[96175] | 242 | break;
|
---|
| 243 | }
|
---|
| 244 | # endif /* VBOX_WITH_LIBVORBIS */
|
---|
| 245 | default:
|
---|
[96477] | 246 | AssertFailedStmt(vrc = VERR_NOT_SUPPORTED); /* Shouldn't ever happen (tm). */
|
---|
[96175] | 247 | break;
|
---|
| 248 | }
|
---|
| 249 |
|
---|
[96477] | 250 | if (RT_SUCCESS(vrc))
|
---|
| 251 | {
|
---|
| 252 | serializeUnsignedInteger(MkvElem_CodecDelay, 0)
|
---|
| 253 | .serializeUnsignedInteger(MkvElem_SeekPreRoll, 80 * 1000000) /* 80ms in ns. */
|
---|
| 254 | .subStart(MkvElem_Audio)
|
---|
| 255 | .serializeFloat(MkvElem_SamplingFrequency, (float)uHz)
|
---|
| 256 | .serializeUnsignedInteger(MkvElem_Channels, cChannels)
|
---|
| 257 | .serializeUnsignedInteger(MkvElem_BitDepth, cBits)
|
---|
| 258 | .subEnd(MkvElem_Audio)
|
---|
| 259 | .subEnd(MkvElem_TrackEntry);
|
---|
[96175] | 260 |
|
---|
[96477] | 261 | pTrack->Audio.uHz = uHz;
|
---|
| 262 | pTrack->Audio.framesPerBlock = uHz / (1000 /* s in ms */ / pTrack->Audio.msPerBlock);
|
---|
[96175] | 263 |
|
---|
[96477] | 264 | LogRel2(("Recording: WebM track #%RU8: Audio codec @ %RU16Hz (%RU16ms, %RU16 frames per block)\n",
|
---|
| 265 | pTrack->uTrack, pTrack->Audio.uHz, pTrack->Audio.msPerBlock, pTrack->Audio.framesPerBlock));
|
---|
[96175] | 266 |
|
---|
[96477] | 267 | m_CurSeg.m_mapTracks[uTrack] = pTrack;
|
---|
[96175] | 268 |
|
---|
[96477] | 269 | if (puTrack)
|
---|
| 270 | *puTrack = uTrack;
|
---|
| 271 |
|
---|
| 272 | return VINF_SUCCESS;
|
---|
| 273 | }
|
---|
[96175] | 274 | }
|
---|
| 275 |
|
---|
| 276 | if (pTrack)
|
---|
| 277 | delete pTrack;
|
---|
[96477] | 278 |
|
---|
| 279 | LogFlowFuncLeaveRC(vrc);
|
---|
[96175] | 280 | return vrc;
|
---|
[69684] | 281 | }
|
---|
| 282 |
|
---|
| 283 | /**
|
---|
| 284 | * Adds a video track.
|
---|
| 285 | *
|
---|
[96230] | 286 | * @returns VBox status code.
|
---|
[96175] | 287 | * @param pCodec Codec data to use.
|
---|
[69684] | 288 | * @param uWidth Width (in pixels) of the video track.
|
---|
| 289 | * @param uHeight Height (in pixels) of the video track.
|
---|
[70623] | 290 | * @param uFPS FPS (Frames Per Second) of the video track.
|
---|
[69684] | 291 | * @param puTrack Track number of the added video track on success. Optional.
|
---|
| 292 | */
|
---|
[96175] | 293 | int WebMWriter::AddVideoTrack(PRECORDINGCODEC pCodec, uint16_t uWidth, uint16_t uHeight, uint32_t uFPS, uint8_t *puTrack)
|
---|
[69684] | 294 | {
|
---|
| 295 | #ifdef VBOX_WITH_LIBVPX
|
---|
[70623] | 296 | /* Some players (e.g. Firefox with Nestegg) rely on track numbers starting at 1.
|
---|
| 297 | * Using a track number 0 will show those files as being corrupted. */
|
---|
[96324] | 298 | const uint8_t uTrack = (uint8_t)m_CurSeg.m_mapTracks.size() + 1;
|
---|
[69684] | 299 |
|
---|
| 300 | subStart(MkvElem_TrackEntry);
|
---|
| 301 |
|
---|
| 302 | serializeUnsignedInteger(MkvElem_TrackNumber, (uint8_t)uTrack);
|
---|
| 303 | serializeString (MkvElem_Language, "und" /* "Undefined"; see ISO-639-2. */);
|
---|
| 304 | serializeUnsignedInteger(MkvElem_FlagLacing, (uint8_t)0);
|
---|
| 305 |
|
---|
[96175] | 306 | WebMTrack *pTrack = new WebMTrack(WebMTrackType_Video, pCodec, uTrack, RTFileTell(getFile()));
|
---|
[69684] | 307 |
|
---|
| 308 | /** @todo Resolve codec type. */
|
---|
| 309 | serializeUnsignedInteger(MkvElem_TrackUID, pTrack->uUUID /* UID */, 4)
|
---|
| 310 | .serializeUnsignedInteger(MkvElem_TrackType, 1 /* Video */)
|
---|
| 311 | .serializeString(MkvElem_CodecID, "V_VP8")
|
---|
| 312 | .subStart(MkvElem_Video)
|
---|
| 313 | .serializeUnsignedInteger(MkvElem_PixelWidth, uWidth)
|
---|
| 314 | .serializeUnsignedInteger(MkvElem_PixelHeight, uHeight)
|
---|
[70623] | 315 | /* Some players rely on the FPS rate for timing calculations.
|
---|
| 316 | * So make sure to *always* include that. */
|
---|
| 317 | .serializeFloat (MkvElem_FrameRate, (float)uFPS)
|
---|
[69684] | 318 | .subEnd(MkvElem_Video);
|
---|
| 319 |
|
---|
| 320 | subEnd(MkvElem_TrackEntry);
|
---|
| 321 |
|
---|
[96175] | 322 | LogRel2(("Recording: WebM track #%RU8: Video\n", pTrack->uTrack));
|
---|
| 323 |
|
---|
[96324] | 324 | m_CurSeg.m_mapTracks[uTrack] = pTrack;
|
---|
[69684] | 325 |
|
---|
| 326 | if (puTrack)
|
---|
| 327 | *puTrack = uTrack;
|
---|
| 328 |
|
---|
| 329 | return VINF_SUCCESS;
|
---|
| 330 | #else
|
---|
[96175] | 331 | RT_NOREF(pCodec, uWidth, uHeight, uFPS, puTrack);
|
---|
[69684] | 332 | return VERR_NOT_SUPPORTED;
|
---|
| 333 | #endif
|
---|
| 334 | }
|
---|
| 335 |
|
---|
| 336 | /**
|
---|
| 337 | * Gets file name.
|
---|
| 338 | *
|
---|
| 339 | * @returns File name as UTF-8 string.
|
---|
| 340 | */
|
---|
[76760] | 341 | const com::Utf8Str& WebMWriter::GetFileName(void)
|
---|
[69684] | 342 | {
|
---|
| 343 | return getFileName();
|
---|
| 344 | }
|
---|
| 345 |
|
---|
| 346 | /**
|
---|
| 347 | * Gets current output file size.
|
---|
| 348 | *
|
---|
| 349 | * @returns File size in bytes.
|
---|
| 350 | */
|
---|
| 351 | uint64_t WebMWriter::GetFileSize(void)
|
---|
| 352 | {
|
---|
| 353 | return getFileSize();
|
---|
| 354 | }
|
---|
| 355 |
|
---|
| 356 | /**
|
---|
| 357 | * Gets current free storage space available for the file.
|
---|
| 358 | *
|
---|
| 359 | * @returns Available storage free space.
|
---|
| 360 | */
|
---|
| 361 | uint64_t WebMWriter::GetAvailableSpace(void)
|
---|
| 362 | {
|
---|
| 363 | return getAvailableSpace();
|
---|
| 364 | }
|
---|
| 365 |
|
---|
| 366 | /**
|
---|
| 367 | * Takes care of the initialization of the instance.
|
---|
| 368 | *
|
---|
[96175] | 369 | * @returns VBox status code.
|
---|
| 370 | * @retval VERR_NOT_SUPPORTED if a given codec is not supported.
|
---|
| 371 | * @param enmAudioCodec Audio codec to use.
|
---|
| 372 | * @param enmVideoCodec Video codec to use.
|
---|
[69684] | 373 | */
|
---|
[96175] | 374 | int WebMWriter::init(RecordingAudioCodec_T enmAudioCodec, RecordingVideoCodec_T enmVideoCodec)
|
---|
[69684] | 375 | {
|
---|
[96175] | 376 | #ifndef VBOX_WITH_LIBVORBIS
|
---|
| 377 | AssertReturn(enmAudioCodec != RecordingAudioCodec_OggVorbis, VERR_NOT_SUPPORTED);
|
---|
| 378 | #endif
|
---|
| 379 | AssertReturn( enmVideoCodec == RecordingVideoCodec_None
|
---|
| 380 | || enmVideoCodec == RecordingVideoCodec_VP8, VERR_NOT_SUPPORTED);
|
---|
| 381 |
|
---|
| 382 | m_enmAudioCodec = enmAudioCodec;
|
---|
| 383 | m_enmVideoCodec = enmVideoCodec;
|
---|
| 384 |
|
---|
[96324] | 385 | return m_CurSeg.init();
|
---|
[69684] | 386 | }
|
---|
| 387 |
|
---|
| 388 | /**
|
---|
| 389 | * Takes care of the destruction of the instance.
|
---|
| 390 | */
|
---|
| 391 | void WebMWriter::destroy(void)
|
---|
| 392 | {
|
---|
[96324] | 393 | m_CurSeg.uninit();
|
---|
[69684] | 394 | }
|
---|
| 395 |
|
---|
| 396 | /**
|
---|
| 397 | * Writes the WebM file header.
|
---|
| 398 | *
|
---|
[96230] | 399 | * @returns VBox status code.
|
---|
[69684] | 400 | */
|
---|
| 401 | int WebMWriter::writeHeader(void)
|
---|
| 402 | {
|
---|
| 403 | LogFunc(("Header @ %RU64\n", RTFileTell(getFile())));
|
---|
| 404 |
|
---|
| 405 | subStart(MkvElem_EBML)
|
---|
| 406 | .serializeUnsignedInteger(MkvElem_EBMLVersion, 1)
|
---|
| 407 | .serializeUnsignedInteger(MkvElem_EBMLReadVersion, 1)
|
---|
| 408 | .serializeUnsignedInteger(MkvElem_EBMLMaxIDLength, 4)
|
---|
| 409 | .serializeUnsignedInteger(MkvElem_EBMLMaxSizeLength, 8)
|
---|
| 410 | .serializeString(MkvElem_DocType, "webm")
|
---|
| 411 | .serializeUnsignedInteger(MkvElem_DocTypeVersion, 2)
|
---|
| 412 | .serializeUnsignedInteger(MkvElem_DocTypeReadVersion, 2)
|
---|
| 413 | .subEnd(MkvElem_EBML);
|
---|
| 414 |
|
---|
| 415 | subStart(MkvElem_Segment);
|
---|
| 416 |
|
---|
| 417 | /* Save offset of current segment. */
|
---|
[96324] | 418 | m_CurSeg.m_offStart = RTFileTell(getFile());
|
---|
[69684] | 419 |
|
---|
[70622] | 420 | writeSeekHeader();
|
---|
[69684] | 421 |
|
---|
| 422 | /* Save offset of upcoming tracks segment. */
|
---|
[96324] | 423 | m_CurSeg.m_offTracks = RTFileTell(getFile());
|
---|
[69684] | 424 |
|
---|
| 425 | /* The tracks segment starts right after this header. */
|
---|
| 426 | subStart(MkvElem_Tracks);
|
---|
| 427 | m_fInTracksSection = true;
|
---|
| 428 |
|
---|
| 429 | return VINF_SUCCESS;
|
---|
| 430 | }
|
---|
| 431 |
|
---|
| 432 | /**
|
---|
| 433 | * Writes a simple block into the EBML structure.
|
---|
| 434 | *
|
---|
[96230] | 435 | * @returns VBox status code.
|
---|
[69684] | 436 | * @param a_pTrack Track the simple block is assigned to.
|
---|
| 437 | * @param a_pBlock Simple block to write.
|
---|
| 438 | */
|
---|
| 439 | int WebMWriter::writeSimpleBlockEBML(WebMTrack *a_pTrack, WebMSimpleBlock *a_pBlock)
|
---|
| 440 | {
|
---|
| 441 | #ifdef LOG_ENABLED
|
---|
[96324] | 442 | WebMCluster &Cluster = m_CurSeg.m_CurCluster;
|
---|
[69684] | 443 |
|
---|
[70622] | 444 | Log3Func(("[T%RU8C%RU64] Off=%RU64, AbsPTSMs=%RU64, RelToClusterMs=%RU16, %zu bytes\n",
|
---|
[69684] | 445 | a_pTrack->uTrack, Cluster.uID, RTFileTell(getFile()),
|
---|
[70622] | 446 | a_pBlock->Data.tcAbsPTSMs, a_pBlock->Data.tcRelToClusterMs, a_pBlock->Data.cb));
|
---|
[69684] | 447 | #endif
|
---|
| 448 | /*
|
---|
| 449 | * Write a "Simple Block".
|
---|
| 450 | */
|
---|
| 451 | writeClassId(MkvElem_SimpleBlock);
|
---|
| 452 | /* Block size. */
|
---|
| 453 | writeUnsignedInteger(0x10000000u | ( 1 /* Track number size. */
|
---|
[70622] | 454 | + m_cbTimecode /* Timecode size .*/
|
---|
| 455 | + 1 /* Flags size. */
|
---|
| 456 | + a_pBlock->Data.cb /* Actual frame data size. */), 4);
|
---|
[69684] | 457 | /* Track number. */
|
---|
| 458 | writeSize(a_pTrack->uTrack);
|
---|
| 459 | /* Timecode (relative to cluster opening timecode). */
|
---|
| 460 | writeUnsignedInteger(a_pBlock->Data.tcRelToClusterMs, m_cbTimecode);
|
---|
| 461 | /* Flags. */
|
---|
| 462 | writeUnsignedInteger(a_pBlock->Data.fFlags, 1);
|
---|
| 463 | /* Frame data. */
|
---|
| 464 | write(a_pBlock->Data.pv, a_pBlock->Data.cb);
|
---|
| 465 |
|
---|
| 466 | return VINF_SUCCESS;
|
---|
| 467 | }
|
---|
| 468 |
|
---|
| 469 | /**
|
---|
| 470 | * Writes a simple block and enqueues it into the segment's render queue.
|
---|
| 471 | *
|
---|
[96230] | 472 | * @returns VBox status code.
|
---|
[69684] | 473 | * @param a_pTrack Track the simple block is assigned to.
|
---|
| 474 | * @param a_pBlock Simple block to write and enqueue.
|
---|
| 475 | */
|
---|
| 476 | int WebMWriter::writeSimpleBlockQueued(WebMTrack *a_pTrack, WebMSimpleBlock *a_pBlock)
|
---|
| 477 | {
|
---|
| 478 | RT_NOREF(a_pTrack);
|
---|
| 479 |
|
---|
[94962] | 480 | int vrc = VINF_SUCCESS;
|
---|
[69684] | 481 |
|
---|
| 482 | try
|
---|
| 483 | {
|
---|
[70622] | 484 | const WebMTimecodeAbs tcAbsPTS = a_pBlock->Data.tcAbsPTSMs;
|
---|
[69684] | 485 |
|
---|
| 486 | /* See if we already have an entry for the specified timecode in our queue. */
|
---|
[96324] | 487 | WebMBlockMap::iterator itQueue = m_CurSeg.m_queueBlocks.Map.find(tcAbsPTS);
|
---|
| 488 | if (itQueue != m_CurSeg.m_queueBlocks.Map.end()) /* Use existing queue. */
|
---|
[69684] | 489 | {
|
---|
| 490 | WebMTimecodeBlocks &Blocks = itQueue->second;
|
---|
| 491 | Blocks.Enqueue(a_pBlock);
|
---|
| 492 | }
|
---|
| 493 | else /* Create a new timecode entry. */
|
---|
| 494 | {
|
---|
| 495 | WebMTimecodeBlocks Blocks;
|
---|
| 496 | Blocks.Enqueue(a_pBlock);
|
---|
| 497 |
|
---|
[96324] | 498 | m_CurSeg.m_queueBlocks.Map[tcAbsPTS] = Blocks;
|
---|
[69684] | 499 | }
|
---|
| 500 |
|
---|
[96324] | 501 | vrc = processQueue(&m_CurSeg.m_queueBlocks, false /* fForce */);
|
---|
[69684] | 502 | }
|
---|
| 503 | catch(...)
|
---|
| 504 | {
|
---|
| 505 | delete a_pBlock;
|
---|
| 506 | a_pBlock = NULL;
|
---|
| 507 |
|
---|
[94962] | 508 | vrc = VERR_NO_MEMORY;
|
---|
[69684] | 509 | }
|
---|
| 510 |
|
---|
[94962] | 511 | return vrc;
|
---|
[69684] | 512 | }
|
---|
| 513 |
|
---|
| 514 | /**
|
---|
| 515 | * Writes a data block to the specified track.
|
---|
| 516 | *
|
---|
[96230] | 517 | * @returns VBox status code.
|
---|
[69684] | 518 | * @param uTrack Track ID to write data to.
|
---|
| 519 | * @param pvData Pointer to data block to write.
|
---|
| 520 | * @param cbData Size (in bytes) of data block to write.
|
---|
[96229] | 521 | * @param tcAbsPTSMs Absolute PTS of simple data block.
|
---|
| 522 | * @param uFlags WebM block flags to use for this block.
|
---|
[69684] | 523 | */
|
---|
[96229] | 524 | int WebMWriter::WriteBlock(uint8_t uTrack, const void *pvData, size_t cbData, WebMTimecodeAbs tcAbsPTSMs, WebMBlockFlags uFlags)
|
---|
[69684] | 525 | {
|
---|
[96324] | 526 | int vrc = RTCritSectEnter(&m_CurSeg.m_CritSect);
|
---|
[94962] | 527 | AssertRC(vrc);
|
---|
[69684] | 528 |
|
---|
[96324] | 529 | WebMTracks::iterator itTrack = m_CurSeg.m_mapTracks.find(uTrack);
|
---|
| 530 | if (itTrack == m_CurSeg.m_mapTracks.end())
|
---|
[69684] | 531 | {
|
---|
[96324] | 532 | RTCritSectLeave(&m_CurSeg.m_CritSect);
|
---|
[69684] | 533 | return VERR_NOT_FOUND;
|
---|
| 534 | }
|
---|
| 535 |
|
---|
| 536 | WebMTrack *pTrack = itTrack->second;
|
---|
| 537 | AssertPtr(pTrack);
|
---|
| 538 |
|
---|
| 539 | if (m_fInTracksSection)
|
---|
| 540 | {
|
---|
| 541 | subEnd(MkvElem_Tracks);
|
---|
| 542 | m_fInTracksSection = false;
|
---|
| 543 | }
|
---|
| 544 |
|
---|
[96229] | 545 | try
|
---|
[69684] | 546 | {
|
---|
[96229] | 547 | vrc = writeSimpleBlockQueued(pTrack,
|
---|
| 548 | new WebMSimpleBlock(pTrack,
|
---|
| 549 | tcAbsPTSMs, pvData, cbData, uFlags));
|
---|
[69684] | 550 | }
|
---|
[96229] | 551 | catch (std::bad_alloc &)
|
---|
| 552 | {
|
---|
| 553 | vrc = VERR_NO_MEMORY;
|
---|
| 554 | }
|
---|
[69684] | 555 |
|
---|
[96324] | 556 | int vrc2 = RTCritSectLeave(&m_CurSeg.m_CritSect);
|
---|
[94962] | 557 | AssertRC(vrc2);
|
---|
[69684] | 558 |
|
---|
[94962] | 559 | return vrc;
|
---|
[69684] | 560 | }
|
---|
| 561 |
|
---|
| 562 | /**
|
---|
| 563 | * Processes a render queue.
|
---|
| 564 | *
|
---|
[96230] | 565 | * @returns VBox status code.
|
---|
[69684] | 566 | * @param pQueue Queue to process.
|
---|
| 567 | * @param fForce Whether forcing to process the render queue or not.
|
---|
| 568 | * Needed to drain the queues when terminating.
|
---|
| 569 | */
|
---|
[75031] | 570 | int WebMWriter::processQueue(WebMQueue *pQueue, bool fForce)
|
---|
[69684] | 571 | {
|
---|
[70622] | 572 | if (pQueue->tsLastProcessedMs == 0)
|
---|
| 573 | pQueue->tsLastProcessedMs = RTTimeMilliTS();
|
---|
[69684] | 574 |
|
---|
| 575 | if (!fForce)
|
---|
| 576 | {
|
---|
| 577 | /* Only process when we reached a certain threshold. */
|
---|
[70622] | 578 | if (RTTimeMilliTS() - pQueue->tsLastProcessedMs < 5000 /* ms */ /** @todo Make this configurable */)
|
---|
[69684] | 579 | return VINF_SUCCESS;
|
---|
| 580 | }
|
---|
| 581 |
|
---|
[96324] | 582 | WebMCluster &Cluster = m_CurSeg.m_CurCluster;
|
---|
[69684] | 583 |
|
---|
| 584 | /* Iterate through the block map. */
|
---|
| 585 | WebMBlockMap::iterator it = pQueue->Map.begin();
|
---|
[96324] | 586 | while (it != m_CurSeg.m_queueBlocks.Map.end())
|
---|
[69684] | 587 | {
|
---|
[70622] | 588 | WebMTimecodeAbs mapAbsPTSMs = it->first;
|
---|
| 589 | WebMTimecodeBlocks mapBlocks = it->second;
|
---|
[69684] | 590 |
|
---|
| 591 | /* Whether to start a new cluster or not. */
|
---|
| 592 | bool fClusterStart = false;
|
---|
| 593 |
|
---|
[75041] | 594 | /* If the current segment does not have any clusters (yet),
|
---|
| 595 | * take the first absolute PTS as the starting point for that segment. */
|
---|
[96324] | 596 | if (m_CurSeg.m_cClusters == 0)
|
---|
[75041] | 597 | {
|
---|
[96324] | 598 | m_CurSeg.m_tcAbsStartMs = mapAbsPTSMs;
|
---|
[75041] | 599 | fClusterStart = true;
|
---|
| 600 | }
|
---|
| 601 |
|
---|
[75076] | 602 | /* Determine if we need to start a new cluster. */
|
---|
| 603 | /* No blocks written yet? Start a new cluster. */
|
---|
| 604 | if ( Cluster.cBlocks == 0
|
---|
| 605 | /* Did we reach the maximum a cluster can hold? Use a new cluster then. */
|
---|
| 606 | || mapAbsPTSMs - Cluster.tcAbsStartMs > VBOX_WEBM_CLUSTER_MAX_LEN_MS
|
---|
| 607 | /* If the block map indicates that a cluster is needed for this timecode, create one. */
|
---|
| 608 | || mapBlocks.fClusterNeeded)
|
---|
| 609 | {
|
---|
[69684] | 610 | fClusterStart = true;
|
---|
[75076] | 611 | }
|
---|
[69684] | 612 |
|
---|
| 613 | if ( fClusterStart
|
---|
| 614 | && !mapBlocks.fClusterStarted)
|
---|
| 615 | {
|
---|
[75041] | 616 | /* Last written timecode of the current cluster. */
|
---|
| 617 | uint64_t tcAbsClusterLastWrittenMs;
|
---|
| 618 |
|
---|
[69684] | 619 | if (Cluster.fOpen) /* Close current cluster first. */
|
---|
| 620 | {
|
---|
[75041] | 621 | Log2Func(("[C%RU64] End @ %RU64ms (duration = %RU64ms)\n",
|
---|
| 622 | Cluster.uID, Cluster.tcAbsLastWrittenMs, Cluster.tcAbsLastWrittenMs - Cluster.tcAbsStartMs));
|
---|
| 623 |
|
---|
| 624 | /* Make sure that the current cluster contained some data. */
|
---|
[69684] | 625 | Assert(Cluster.offStart);
|
---|
| 626 | Assert(Cluster.cBlocks);
|
---|
| 627 |
|
---|
[75041] | 628 | /* Save the last written timecode of the current cluster before closing it. */
|
---|
| 629 | tcAbsClusterLastWrittenMs = Cluster.tcAbsLastWrittenMs;
|
---|
| 630 |
|
---|
[69684] | 631 | subEnd(MkvElem_Cluster);
|
---|
| 632 | Cluster.fOpen = false;
|
---|
| 633 | }
|
---|
[75041] | 634 | else /* First cluster ever? Use the segment's starting timecode. */
|
---|
[96324] | 635 | tcAbsClusterLastWrittenMs = m_CurSeg.m_tcAbsStartMs;
|
---|
[69684] | 636 |
|
---|
[75041] | 637 | Cluster.fOpen = true;
|
---|
[96324] | 638 | Cluster.uID = m_CurSeg.m_cClusters;
|
---|
[75076] | 639 | /* Use the block map's currently processed TC as the cluster's starting TC. */
|
---|
| 640 | Cluster.tcAbsStartMs = mapAbsPTSMs;
|
---|
[75041] | 641 | Cluster.tcAbsLastWrittenMs = Cluster.tcAbsStartMs;
|
---|
| 642 | Cluster.offStart = RTFileTell(getFile());
|
---|
| 643 | Cluster.cBlocks = 0;
|
---|
| 644 |
|
---|
[75076] | 645 | AssertMsg(Cluster.tcAbsStartMs <= mapAbsPTSMs,
|
---|
| 646 | ("Cluster #%RU64 start TC (%RU64) must not bigger than the block map's currently processed TC (%RU64)\n",
|
---|
| 647 | Cluster.uID, Cluster.tcAbsStartMs, mapAbsPTSMs));
|
---|
| 648 |
|
---|
[70622] | 649 | Log2Func(("[C%RU64] Start @ %RU64ms (map TC is %RU64) / %RU64 bytes\n",
|
---|
| 650 | Cluster.uID, Cluster.tcAbsStartMs, mapAbsPTSMs, Cluster.offStart));
|
---|
| 651 |
|
---|
[75030] | 652 | /* Insert cue points for all tracks if a new cluster has been started. */
|
---|
| 653 | WebMCuePoint *pCuePoint = new WebMCuePoint(Cluster.tcAbsStartMs);
|
---|
[69684] | 654 |
|
---|
[96324] | 655 | WebMTracks::iterator itTrack = m_CurSeg.m_mapTracks.begin();
|
---|
| 656 | while (itTrack != m_CurSeg.m_mapTracks.end())
|
---|
[70623] | 657 | {
|
---|
[75030] | 658 | pCuePoint->Pos[itTrack->first] = new WebMCueTrackPosEntry(Cluster.offStart);
|
---|
[70623] | 659 | ++itTrack;
|
---|
| 660 | }
|
---|
| 661 |
|
---|
[96324] | 662 | m_CurSeg.m_lstCuePoints.push_back(pCuePoint);
|
---|
[75030] | 663 |
|
---|
[69684] | 664 | subStart(MkvElem_Cluster)
|
---|
[96324] | 665 | .serializeUnsignedInteger(MkvElem_Timecode, Cluster.tcAbsStartMs - m_CurSeg.m_tcAbsStartMs);
|
---|
[69684] | 666 |
|
---|
[96324] | 667 | m_CurSeg.m_cClusters++;
|
---|
[69684] | 668 |
|
---|
| 669 | mapBlocks.fClusterStarted = true;
|
---|
| 670 | }
|
---|
| 671 |
|
---|
[75041] | 672 | Log2Func(("[C%RU64] SegTcAbsStartMs=%RU64, ClusterTcAbsStartMs=%RU64, ClusterTcAbsLastWrittenMs=%RU64, mapAbsPTSMs=%RU64\n",
|
---|
[96324] | 673 | Cluster.uID, m_CurSeg.m_tcAbsStartMs, Cluster.tcAbsStartMs, Cluster.tcAbsLastWrittenMs, mapAbsPTSMs));
|
---|
[75041] | 674 |
|
---|
[69684] | 675 | /* Iterate through all blocks related to the current timecode. */
|
---|
| 676 | while (!mapBlocks.Queue.empty())
|
---|
| 677 | {
|
---|
| 678 | WebMSimpleBlock *pBlock = mapBlocks.Queue.front();
|
---|
| 679 | AssertPtr(pBlock);
|
---|
| 680 |
|
---|
| 681 | WebMTrack *pTrack = pBlock->pTrack;
|
---|
| 682 | AssertPtr(pTrack);
|
---|
| 683 |
|
---|
| 684 | /* Calculate the block's relative time code to the current cluster's starting time code. */
|
---|
[70622] | 685 | Assert(pBlock->Data.tcAbsPTSMs >= Cluster.tcAbsStartMs);
|
---|
| 686 | pBlock->Data.tcRelToClusterMs = pBlock->Data.tcAbsPTSMs - Cluster.tcAbsStartMs;
|
---|
[69684] | 687 |
|
---|
[94962] | 688 | int vrc2 = writeSimpleBlockEBML(pTrack, pBlock);
|
---|
| 689 | AssertRC(vrc2);
|
---|
[69684] | 690 |
|
---|
| 691 | Cluster.cBlocks++;
|
---|
[75041] | 692 | Cluster.tcAbsLastWrittenMs = pBlock->Data.tcAbsPTSMs;
|
---|
[69684] | 693 |
|
---|
| 694 | pTrack->cTotalBlocks++;
|
---|
[75041] | 695 | pTrack->tcAbsLastWrittenMs = Cluster.tcAbsLastWrittenMs;
|
---|
[69684] | 696 |
|
---|
[96324] | 697 | if (m_CurSeg.m_tcAbsLastWrittenMs < pTrack->tcAbsLastWrittenMs)
|
---|
| 698 | m_CurSeg.m_tcAbsLastWrittenMs = pTrack->tcAbsLastWrittenMs;
|
---|
[69684] | 699 |
|
---|
[70623] | 700 | /* Save a cue point if this is a keyframe (if no new cluster has been started,
|
---|
| 701 | * as this implies that a cue point already is present. */
|
---|
| 702 | if ( !fClusterStart
|
---|
| 703 | && (pBlock->Data.fFlags & VBOX_WEBM_BLOCK_FLAG_KEY_FRAME))
|
---|
[69684] | 704 | {
|
---|
[75030] | 705 | /* Insert cue points for all tracks if a new cluster has been started. */
|
---|
[75041] | 706 | WebMCuePoint *pCuePoint = new WebMCuePoint(Cluster.tcAbsLastWrittenMs);
|
---|
[75030] | 707 |
|
---|
[96324] | 708 | WebMTracks::iterator itTrack = m_CurSeg.m_mapTracks.begin();
|
---|
| 709 | while (itTrack != m_CurSeg.m_mapTracks.end())
|
---|
[75030] | 710 | {
|
---|
| 711 | pCuePoint->Pos[itTrack->first] = new WebMCueTrackPosEntry(Cluster.offStart);
|
---|
| 712 | ++itTrack;
|
---|
| 713 | }
|
---|
| 714 |
|
---|
[96324] | 715 | m_CurSeg.m_lstCuePoints.push_back(pCuePoint);
|
---|
[69684] | 716 | }
|
---|
| 717 |
|
---|
| 718 | delete pBlock;
|
---|
| 719 | pBlock = NULL;
|
---|
| 720 |
|
---|
| 721 | mapBlocks.Queue.pop();
|
---|
| 722 | }
|
---|
| 723 |
|
---|
| 724 | Assert(mapBlocks.Queue.empty());
|
---|
| 725 |
|
---|
[96324] | 726 | m_CurSeg.m_queueBlocks.Map.erase(it);
|
---|
[69684] | 727 |
|
---|
[96324] | 728 | it = m_CurSeg.m_queueBlocks.Map.begin();
|
---|
[69684] | 729 | }
|
---|
| 730 |
|
---|
[96324] | 731 | Assert(m_CurSeg.m_queueBlocks.Map.empty());
|
---|
[69684] | 732 |
|
---|
[70622] | 733 | pQueue->tsLastProcessedMs = RTTimeMilliTS();
|
---|
[69684] | 734 |
|
---|
| 735 | return VINF_SUCCESS;
|
---|
| 736 | }
|
---|
| 737 |
|
---|
| 738 | /**
|
---|
| 739 | * Writes the WebM footer.
|
---|
| 740 | *
|
---|
[96230] | 741 | * @returns VBox status code.
|
---|
[69684] | 742 | */
|
---|
| 743 | int WebMWriter::writeFooter(void)
|
---|
| 744 | {
|
---|
| 745 | AssertReturn(isOpen(), VERR_WRONG_ORDER);
|
---|
| 746 |
|
---|
| 747 | if (m_fInTracksSection)
|
---|
| 748 | {
|
---|
| 749 | subEnd(MkvElem_Tracks);
|
---|
| 750 | m_fInTracksSection = false;
|
---|
| 751 | }
|
---|
| 752 |
|
---|
[96324] | 753 | if (m_CurSeg.m_CurCluster.fOpen)
|
---|
[69684] | 754 | {
|
---|
| 755 | subEnd(MkvElem_Cluster);
|
---|
[96324] | 756 | m_CurSeg.m_CurCluster.fOpen = false;
|
---|
[69684] | 757 | }
|
---|
| 758 |
|
---|
| 759 | /*
|
---|
| 760 | * Write Cues element.
|
---|
| 761 | */
|
---|
[96324] | 762 | m_CurSeg.m_offCues = RTFileTell(getFile());
|
---|
| 763 | LogFunc(("Cues @ %RU64\n", m_CurSeg.m_offCues));
|
---|
[69684] | 764 |
|
---|
| 765 | subStart(MkvElem_Cues);
|
---|
| 766 |
|
---|
[96324] | 767 | WebMCuePointList::iterator itCuePoint = m_CurSeg.m_lstCuePoints.begin();
|
---|
| 768 | while (itCuePoint != m_CurSeg.m_lstCuePoints.end())
|
---|
[69684] | 769 | {
|
---|
[75030] | 770 | WebMCuePoint *pCuePoint = (*itCuePoint);
|
---|
| 771 | AssertPtr(pCuePoint);
|
---|
[69684] | 772 |
|
---|
[75030] | 773 | LogFunc(("CuePoint @ %RU64: %zu tracks, tcAbs=%RU64)\n",
|
---|
| 774 | RTFileTell(getFile()), pCuePoint->Pos.size(), pCuePoint->tcAbs));
|
---|
[69684] | 775 |
|
---|
| 776 | subStart(MkvElem_CuePoint)
|
---|
[75030] | 777 | .serializeUnsignedInteger(MkvElem_CueTime, pCuePoint->tcAbs);
|
---|
[69684] | 778 |
|
---|
[75030] | 779 | WebMCueTrackPosMap::iterator itTrackPos = pCuePoint->Pos.begin();
|
---|
| 780 | while (itTrackPos != pCuePoint->Pos.end())
|
---|
| 781 | {
|
---|
| 782 | WebMCueTrackPosEntry *pTrackPos = itTrackPos->second;
|
---|
| 783 | AssertPtr(pTrackPos);
|
---|
| 784 |
|
---|
| 785 | LogFunc(("TrackPos (track #%RU32) @ %RU64, offCluster=%RU64)\n",
|
---|
| 786 | itTrackPos->first, RTFileTell(getFile()), pTrackPos->offCluster));
|
---|
| 787 |
|
---|
| 788 | subStart(MkvElem_CueTrackPositions)
|
---|
| 789 | .serializeUnsignedInteger(MkvElem_CueTrack, itTrackPos->first)
|
---|
[96324] | 790 | .serializeUnsignedInteger(MkvElem_CueClusterPosition, pTrackPos->offCluster - m_CurSeg.m_offStart, 8)
|
---|
[75030] | 791 | .subEnd(MkvElem_CueTrackPositions);
|
---|
| 792 |
|
---|
| 793 | ++itTrackPos;
|
---|
| 794 | }
|
---|
| 795 |
|
---|
| 796 | subEnd(MkvElem_CuePoint);
|
---|
| 797 |
|
---|
| 798 | ++itCuePoint;
|
---|
[69684] | 799 | }
|
---|
| 800 |
|
---|
| 801 | subEnd(MkvElem_Cues);
|
---|
| 802 | subEnd(MkvElem_Segment);
|
---|
| 803 |
|
---|
| 804 | /*
|
---|
[70622] | 805 | * Re-Update seek header with final information.
|
---|
[69684] | 806 | */
|
---|
| 807 |
|
---|
[70622] | 808 | writeSeekHeader();
|
---|
[69684] | 809 |
|
---|
| 810 | return RTFileSeek(getFile(), 0, RTFILE_SEEK_END, NULL);
|
---|
| 811 | }
|
---|
| 812 |
|
---|
| 813 | /**
|
---|
[70622] | 814 | * Writes the segment's seek header.
|
---|
[69684] | 815 | */
|
---|
[70622] | 816 | void WebMWriter::writeSeekHeader(void)
|
---|
[69684] | 817 | {
|
---|
[96324] | 818 | if (m_CurSeg.m_offSeekInfo)
|
---|
| 819 | RTFileSeek(getFile(), m_CurSeg.m_offSeekInfo, RTFILE_SEEK_BEGIN, NULL);
|
---|
[69684] | 820 | else
|
---|
[96324] | 821 | m_CurSeg.m_offSeekInfo = RTFileTell(getFile());
|
---|
[69684] | 822 |
|
---|
[96324] | 823 | LogFunc(("Seek Header @ %RU64\n", m_CurSeg.m_offSeekInfo));
|
---|
[69684] | 824 |
|
---|
| 825 | subStart(MkvElem_SeekHead);
|
---|
| 826 |
|
---|
| 827 | subStart(MkvElem_Seek)
|
---|
| 828 | .serializeUnsignedInteger(MkvElem_SeekID, MkvElem_Tracks)
|
---|
[96324] | 829 | .serializeUnsignedInteger(MkvElem_SeekPosition, m_CurSeg.m_offTracks - m_CurSeg.m_offStart, 8)
|
---|
[69684] | 830 | .subEnd(MkvElem_Seek);
|
---|
| 831 |
|
---|
[96324] | 832 | if (m_CurSeg.m_offCues)
|
---|
| 833 | LogFunc(("Updating Cues @ %RU64\n", m_CurSeg.m_offCues));
|
---|
[69684] | 834 |
|
---|
| 835 | subStart(MkvElem_Seek)
|
---|
| 836 | .serializeUnsignedInteger(MkvElem_SeekID, MkvElem_Cues)
|
---|
[96324] | 837 | .serializeUnsignedInteger(MkvElem_SeekPosition, m_CurSeg.m_offCues - m_CurSeg.m_offStart, 8)
|
---|
[69684] | 838 | .subEnd(MkvElem_Seek);
|
---|
| 839 |
|
---|
| 840 | subStart(MkvElem_Seek)
|
---|
| 841 | .serializeUnsignedInteger(MkvElem_SeekID, MkvElem_Info)
|
---|
[96324] | 842 | .serializeUnsignedInteger(MkvElem_SeekPosition, m_CurSeg.m_offInfo - m_CurSeg.m_offStart, 8)
|
---|
[69684] | 843 | .subEnd(MkvElem_Seek);
|
---|
| 844 |
|
---|
| 845 | subEnd(MkvElem_SeekHead);
|
---|
| 846 |
|
---|
[70622] | 847 | /*
|
---|
| 848 | * Write the segment's info element.
|
---|
| 849 | */
|
---|
| 850 |
|
---|
| 851 | /* Save offset of the segment's info element. */
|
---|
[96324] | 852 | m_CurSeg.m_offInfo = RTFileTell(getFile());
|
---|
[69684] | 853 |
|
---|
[96324] | 854 | LogFunc(("Info @ %RU64\n", m_CurSeg.m_offInfo));
|
---|
[69684] | 855 |
|
---|
| 856 | char szMux[64];
|
---|
| 857 | RTStrPrintf(szMux, sizeof(szMux),
|
---|
| 858 | #ifdef VBOX_WITH_LIBVPX
|
---|
[94962] | 859 | "vpxenc%s", vpx_codec_version_str()
|
---|
[69684] | 860 | #else
|
---|
[94962] | 861 | "unknown"
|
---|
[69684] | 862 | #endif
|
---|
[94962] | 863 | );
|
---|
[69684] | 864 | char szApp[64];
|
---|
| 865 | RTStrPrintf(szApp, sizeof(szApp), VBOX_PRODUCT " %sr%u", VBOX_VERSION_STRING, RTBldCfgRevision());
|
---|
| 866 |
|
---|
[96324] | 867 | const WebMTimecodeAbs tcAbsDurationMs = m_CurSeg.m_tcAbsLastWrittenMs - m_CurSeg.m_tcAbsStartMs;
|
---|
[69684] | 868 |
|
---|
[96324] | 869 | if (!m_CurSeg.m_lstCuePoints.empty())
|
---|
[69684] | 870 | {
|
---|
[70622] | 871 | LogFunc(("tcAbsDurationMs=%RU64\n", tcAbsDurationMs));
|
---|
| 872 | AssertMsg(tcAbsDurationMs, ("Segment seems to be empty (duration is 0)\n"));
|
---|
[69684] | 873 | }
|
---|
| 874 |
|
---|
| 875 | subStart(MkvElem_Info)
|
---|
[96324] | 876 | .serializeUnsignedInteger(MkvElem_TimecodeScale, m_CurSeg.m_uTimecodeScaleFactor)
|
---|
[70622] | 877 | .serializeFloat(MkvElem_Segment_Duration, tcAbsDurationMs)
|
---|
| 878 | .serializeString(MkvElem_MuxingApp, szMux)
|
---|
| 879 | .serializeString(MkvElem_WritingApp, szApp)
|
---|
| 880 | .subEnd(MkvElem_Info);
|
---|
[69684] | 881 | }
|
---|