1 /* 2 * Copyright 2009-2010, Stephan Aßmus <superstippi@gmx.de> 3 * Copyright 2018, Dario Casalinuovo 4 * All rights reserved. Distributed under the terms of the GNU L-GPL license. 5 */ 6 7 #include "AVFormatWriter.h" 8 9 #include <stdio.h> 10 #include <string.h> 11 #include <stdlib.h> 12 13 #include <new> 14 15 #include <Application.h> 16 #include <AutoDeleter.h> 17 #include <Autolock.h> 18 #include <ByteOrder.h> 19 #include <MediaIO.h> 20 #include <MediaDefs.h> 21 #include <MediaFormats.h> 22 #include <Roster.h> 23 24 extern "C" { 25 #include "avformat.h" 26 } 27 28 #include "DemuxerTable.h" 29 #include "EncoderTable.h" 30 #include "gfx_util.h" 31 32 33 //#define TRACE_AVFORMAT_WRITER 34 #ifdef TRACE_AVFORMAT_WRITER 35 # define TRACE printf 36 # define TRACE_IO(a...) 37 # define TRACE_PACKET printf 38 #else 39 # define TRACE(a...) 40 # define TRACE_IO(a...) 41 # define TRACE_PACKET(a...) 42 #endif 43 44 #define ERROR(a...) fprintf(stderr, a) 45 46 47 static const size_t kIOBufferSize = 64 * 1024; 48 // TODO: This could depend on the BMediaFile creation flags, IIRC, 49 // they allow to specify a buffering mode. 50 51 typedef AVCodecID CodecID; 52 53 // #pragma mark - AVFormatWriter::StreamCookie 54 55 56 class AVFormatWriter::StreamCookie { 57 public: 58 StreamCookie(AVFormatContext* context, 59 BLocker* streamLock); 60 virtual ~StreamCookie(); 61 62 status_t Init(media_format* format, 63 const media_codec_info* codecInfo); 64 65 status_t WriteChunk(const void* chunkBuffer, 66 size_t chunkSize, 67 media_encode_info* encodeInfo); 68 69 status_t AddTrackInfo(uint32 code, const void* data, 70 size_t size, uint32 flags); 71 72 private: 73 AVFormatContext* fFormatContext; 74 AVStream* fStream; 75 AVPacket fPacket; 76 // Since different threads may write to the target, 77 // we need to protect the file position and I/O by a lock. 78 BLocker* fStreamLock; 79 }; 80 81 82 83 AVFormatWriter::StreamCookie::StreamCookie(AVFormatContext* context, 84 BLocker* streamLock) 85 : 86 fFormatContext(context), 87 fStream(NULL), 88 fStreamLock(streamLock) 89 { 90 av_init_packet(&fPacket); 91 } 92 93 94 AVFormatWriter::StreamCookie::~StreamCookie() 95 { 96 // fStream is freed automatically when the codec context is closed 97 } 98 99 100 status_t 101 AVFormatWriter::StreamCookie::Init(media_format* format, 102 const media_codec_info* codecInfo) 103 { 104 TRACE("AVFormatWriter::StreamCookie::Init()\n"); 105 106 BAutolock _(fStreamLock); 107 108 fPacket.stream_index = fFormatContext->nb_streams; 109 fStream = avformat_new_stream(fFormatContext, NULL); 110 111 if (fStream == NULL) { 112 TRACE(" failed to add new stream\n"); 113 return B_ERROR; 114 } 115 116 fStream->id = fPacket.stream_index; 117 118 // TRACE(" fStream->codecpar: %p\n", fStream->codecpar); 119 // TODO: This is a hack for now! Use avcodec_find_encoder_by_name() 120 // or something similar... 121 fStream->codecpar->codec_id = (CodecID)codecInfo->sub_id; 122 if (fStream->codecpar->codec_id == AV_CODEC_ID_NONE) 123 fStream->codecpar->codec_id = raw_audio_codec_id_for(*format); 124 125 // Setup the stream according to the media format... 126 if (format->type == B_MEDIA_RAW_VIDEO) { 127 fStream->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; 128 fStream->time_base.den = (int)format->u.raw_video.field_rate; 129 fStream->time_base.num = 1; 130 131 // video size 132 fStream->codecpar->width = format->u.raw_video.display.line_width; 133 fStream->codecpar->height = format->u.raw_video.display.line_count; 134 // pixel aspect ratio 135 fStream->sample_aspect_ratio.num 136 = format->u.raw_video.pixel_width_aspect; 137 fStream->sample_aspect_ratio.den 138 = format->u.raw_video.pixel_height_aspect; 139 if (fStream->sample_aspect_ratio.num == 0 140 || fStream->sample_aspect_ratio.den == 0) { 141 av_reduce(&fStream->sample_aspect_ratio.num, 142 &fStream->sample_aspect_ratio.den, fStream->codecpar->width, 143 fStream->codecpar->height, 255); 144 } 145 146 fStream->codecpar->sample_aspect_ratio = fStream->sample_aspect_ratio; 147 148 // Use the last supported pixel format of the AVCodec, which we hope 149 // is the one with the best quality (true for all currently supported 150 // encoders). 151 // AVCodec* codec = fStream->codecpar->codec; 152 // for (int i = 0; codec->pix_fmts[i] != PIX_FMT_NONE; i++) 153 // fStream->codecpar->pix_fmt = codec->pix_fmts[i]; 154 fStream->codecpar->format = AV_PIX_FMT_YUV420P; 155 156 } else if (format->type == B_MEDIA_RAW_AUDIO) { 157 fStream->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; 158 159 // frame rate 160 fStream->codecpar->sample_rate = (int)format->u.raw_audio.frame_rate; 161 162 // channels 163 fStream->codecpar->channels = format->u.raw_audio.channel_count; 164 165 // set fStream to the audio format we want to use. This is only a hint 166 // (each encoder has a different set of accepted formats) 167 switch (format->u.raw_audio.format) { 168 case media_raw_audio_format::B_AUDIO_FLOAT: 169 fStream->codecpar->format = AV_SAMPLE_FMT_FLT; 170 break; 171 case media_raw_audio_format::B_AUDIO_DOUBLE: 172 fStream->codecpar->format = AV_SAMPLE_FMT_DBL; 173 break; 174 case media_raw_audio_format::B_AUDIO_INT: 175 fStream->codecpar->format = AV_SAMPLE_FMT_S32; 176 break; 177 case media_raw_audio_format::B_AUDIO_SHORT: 178 fStream->codecpar->format = AV_SAMPLE_FMT_S16; 179 break; 180 case media_raw_audio_format::B_AUDIO_UCHAR: 181 fStream->codecpar->format = AV_SAMPLE_FMT_U8; 182 break; 183 184 case media_raw_audio_format::B_AUDIO_CHAR: 185 default: 186 return B_MEDIA_BAD_FORMAT; 187 break; 188 } 189 190 // Now negociate the actual format with the encoder 191 // First check if the requested format is acceptable 192 AVCodec* codec = avcodec_find_encoder(fStream->codecpar->codec_id); 193 194 if (codec == NULL) 195 return B_MEDIA_BAD_FORMAT; 196 197 const enum AVSampleFormat *p = codec->sample_fmts; 198 for (; *p != -1; p++) { 199 if (*p == fStream->codecpar->format) 200 break; 201 } 202 // If not, force one of the acceptable ones 203 if (*p == -1) { 204 fStream->codecpar->format = codec->sample_fmts[0]; 205 206 // And finally set the format struct to the accepted format. It is 207 // then up to the caller to make sure we get data matching that 208 // format. 209 switch (fStream->codecpar->format) { 210 case AV_SAMPLE_FMT_FLT: 211 format->u.raw_audio.format 212 = media_raw_audio_format::B_AUDIO_FLOAT; 213 break; 214 case AV_SAMPLE_FMT_DBL: 215 format->u.raw_audio.format 216 = media_raw_audio_format::B_AUDIO_DOUBLE; 217 break; 218 case AV_SAMPLE_FMT_S32: 219 format->u.raw_audio.format 220 = media_raw_audio_format::B_AUDIO_INT; 221 break; 222 case AV_SAMPLE_FMT_S16: 223 format->u.raw_audio.format 224 = media_raw_audio_format::B_AUDIO_SHORT; 225 break; 226 case AV_SAMPLE_FMT_U8: 227 format->u.raw_audio.format 228 = media_raw_audio_format::B_AUDIO_UCHAR; 229 break; 230 default: 231 return B_MEDIA_BAD_FORMAT; 232 break; 233 } 234 } 235 236 if (format->u.raw_audio.channel_mask == 0) { 237 // guess the channel mask... 238 switch (format->u.raw_audio.channel_count) { 239 default: 240 case 2: 241 fStream->codecpar->channel_layout = AV_CH_LAYOUT_STEREO; 242 break; 243 case 1: 244 fStream->codecpar->channel_layout = AV_CH_LAYOUT_MONO; 245 break; 246 case 3: 247 fStream->codecpar->channel_layout = AV_CH_LAYOUT_SURROUND; 248 break; 249 case 4: 250 fStream->codecpar->channel_layout = AV_CH_LAYOUT_QUAD; 251 break; 252 case 5: 253 fStream->codecpar->channel_layout = AV_CH_LAYOUT_5POINT0; 254 break; 255 case 6: 256 fStream->codecpar->channel_layout = AV_CH_LAYOUT_5POINT1; 257 break; 258 case 8: 259 fStream->codecpar->channel_layout = AV_CH_LAYOUT_7POINT1; 260 break; 261 case 10: 262 fStream->codecpar->channel_layout = AV_CH_LAYOUT_7POINT1_WIDE; 263 break; 264 } 265 } else { 266 // The bits match 1:1 for media_multi_channels and FFmpeg defines. 267 fStream->codecpar->channel_layout = format->u.raw_audio.channel_mask; 268 } 269 } 270 271 TRACE(" stream->time_base: (%d/%d)\n", 272 fStream->time_base.num, fStream->time_base.den); 273 274 #if 0 275 // Write the AVCodecContext pointer to the user data section of the 276 // media_format. For some encoders, it seems to be necessary to use 277 // the AVCodecContext of the AVStream in order to successfully encode 278 // anything and write valid media files. For example some codecs need 279 // to store meta data or global data in the container. 280 app_info appInfo; 281 if (be_app->GetAppInfo(&appInfo) == B_OK) { 282 uchar* userData = format->user_data; 283 *(uint32*)userData = 'ffmp'; 284 userData += sizeof(uint32); 285 *(team_id*)userData = appInfo.team; 286 userData += sizeof(team_id); 287 *(AVCodecContext**)userData = fStream->codec; 288 } 289 #endif 290 291 return B_OK; 292 } 293 294 295 status_t 296 AVFormatWriter::StreamCookie::WriteChunk(const void* chunkBuffer, 297 size_t chunkSize, media_encode_info* encodeInfo) 298 { 299 TRACE_PACKET("AVFormatWriter::StreamCookie[%d]::WriteChunk(%p, %ld, " 300 "start_time: %" B_PRIdBIGTIME ")\n", fStream->index, chunkBuffer, chunkSize, 301 encodeInfo->start_time); 302 303 BAutolock _(fStreamLock); 304 305 fPacket.data = const_cast<uint8_t*>((const uint8_t*)chunkBuffer); 306 fPacket.size = chunkSize; 307 fPacket.stream_index = fStream->index; 308 309 fPacket.pts = int64_t((double)encodeInfo->start_time 310 * fStream->time_base.den / (1000000.0 * fStream->time_base.num) 311 + 0.5); 312 313 fPacket.dts = fPacket.pts; 314 315 fPacket.flags = 0; 316 if ((encodeInfo->flags & B_MEDIA_KEY_FRAME) != 0) 317 fPacket.flags |= AV_PKT_FLAG_KEY; 318 319 TRACE_PACKET(" PTS: %" PRId64 " (stream->time_base: (%d/%d)\n", fPacket.pts, 320 fStream->time_base.num, fStream->time_base.den); 321 322 #if 0 323 // TODO: Eventually, we need to write interleaved packets, but 324 // maybe we are only supposed to use this if we have actually 325 // more than one stream. For the moment, this crashes in AVPacket 326 // shuffling inside libavformat. Maybe if we want to use this, we 327 // need to allocate a separate AVPacket and copy the chunk buffer. 328 int result = av_interleaved_write_frame(fFormatContext, &fPacket); 329 if (result < 0) 330 TRACE(" av_interleaved_write_frame(): %d\n", result); 331 #else 332 int result = av_write_frame(fFormatContext, &fPacket); 333 if (result < 0) 334 TRACE(" av_write_frame(): %d\n", result); 335 #endif 336 337 return result == 0 ? B_OK : B_ERROR; 338 } 339 340 341 status_t 342 AVFormatWriter::StreamCookie::AddTrackInfo(uint32 code, 343 const void* data, size_t size, uint32 flags) 344 { 345 TRACE("AVFormatWriter::StreamCookie::AddTrackInfo(%" B_PRIu32 ", %p, %ld, %" B_PRIu32 ")\n", 346 code, data, size, flags); 347 348 BAutolock _(fStreamLock); 349 350 return B_NOT_SUPPORTED; 351 } 352 353 354 // #pragma mark - AVFormatWriter 355 356 357 AVFormatWriter::AVFormatWriter() 358 : 359 fFormatContext(avformat_alloc_context()), 360 fCodecOpened(false), 361 fHeaderError(-1), 362 fIOContext(NULL), 363 fStreamLock("stream lock") 364 { 365 TRACE("AVFormatWriter::AVFormatWriter\n"); 366 } 367 368 369 AVFormatWriter::~AVFormatWriter() 370 { 371 TRACE("AVFormatWriter::~AVFormatWriter\n"); 372 373 // Free the streams and close the AVCodecContexts 374 for (unsigned i = 0; i < fFormatContext->nb_streams; i++) { 375 av_freep(&fFormatContext->streams[i]->codecpar); 376 av_freep(&fFormatContext->streams[i]); 377 } 378 379 avformat_free_context(fFormatContext); 380 av_free(fIOContext->buffer); 381 av_free(fIOContext); 382 } 383 384 385 // #pragma mark - 386 387 388 status_t 389 AVFormatWriter::Init(const media_file_format* fileFormat) 390 { 391 TRACE("AVFormatWriter::Init()\n"); 392 393 if (fIOContext == NULL) { 394 uint8* buffer = static_cast<uint8*>(av_malloc(kIOBufferSize)); 395 if (buffer == NULL) 396 return B_NO_MEMORY; 397 398 // Allocate I/O context and initialize it with buffer 399 // and hook functions, pass ourself as cookie. 400 fIOContext = avio_alloc_context(buffer, kIOBufferSize, 1, this, 401 0, _Write, _Seek); 402 if (fIOContext == NULL) { 403 av_free(buffer); 404 TRACE("av_alloc_put_byte() failed!\n"); 405 return B_ERROR; 406 } 407 408 // Setup I/O hooks. This seems to be enough. 409 fFormatContext->pb = fIOContext; 410 } 411 412 // Set the AVOutputFormat according to fileFormat... 413 fFormatContext->oformat = av_guess_format(fileFormat->short_name, 414 fileFormat->file_extension, fileFormat->mime_type); 415 if (fFormatContext->oformat == NULL) { 416 TRACE(" failed to find AVOuputFormat for %s\n", 417 fileFormat->short_name); 418 return B_NOT_SUPPORTED; 419 } 420 421 TRACE(" found AVOuputFormat for %s: %s\n", fileFormat->short_name, 422 fFormatContext->oformat->name); 423 424 return B_OK; 425 } 426 427 428 status_t 429 AVFormatWriter::SetCopyright(const char* copyright) 430 { 431 TRACE("AVFormatWriter::SetCopyright(%s)\n", copyright); 432 433 return B_NOT_SUPPORTED; 434 } 435 436 437 status_t 438 AVFormatWriter::CommitHeader() 439 { 440 TRACE("AVFormatWriter::CommitHeader\n"); 441 442 if (fFormatContext == NULL) 443 return B_NO_INIT; 444 445 if (fCodecOpened) 446 return B_NOT_ALLOWED; 447 448 // We need to close the codecs we opened, even in case of failure. 449 fCodecOpened = true; 450 451 fHeaderError = avformat_write_header(fFormatContext, NULL); 452 453 #ifdef TRACE_AVFORMAT_WRITER 454 if (fHeaderError < 0) { 455 char errorBuffer[AV_ERROR_MAX_STRING_SIZE]; 456 av_strerror(fHeaderError, errorBuffer, sizeof(errorBuffer)); 457 TRACE(" avformat_write_header(): %s\n", errorBuffer); 458 } else { 459 TRACE(" wrote header\n"); 460 } 461 462 for (unsigned i = 0; i < fFormatContext->nb_streams; i++) { 463 AVStream* stream = fFormatContext->streams[i]; 464 TRACE(" stream[%u] time_base: (%d/%d)\n", 465 i, stream->time_base.num, stream->time_base.den); 466 } 467 #endif // TRACE_AVFORMAT_WRITER 468 469 return fHeaderError == 0 ? B_OK : B_ERROR; 470 } 471 472 473 status_t 474 AVFormatWriter::Flush() 475 { 476 TRACE("AVFormatWriter::Flush\n"); 477 478 return B_NOT_SUPPORTED; 479 } 480 481 482 status_t 483 AVFormatWriter::Close() 484 { 485 TRACE("AVFormatWriter::Close\n"); 486 487 if (fFormatContext == NULL) 488 return B_NO_INIT; 489 490 if (!fCodecOpened) 491 return B_NOT_ALLOWED; 492 493 // From ffmpeg documentation: [av_write_trailer] may only be called 494 // after a successful call to avformat_write_header. 495 if (fHeaderError != 0) 496 return B_ERROR; 497 498 int result = av_write_trailer(fFormatContext); 499 if (result < 0) 500 TRACE(" av_write_trailer(): %d\n", result); 501 return result == 0 ? B_OK : B_ERROR; 502 } 503 504 505 status_t 506 AVFormatWriter::AllocateCookie(void** _cookie, media_format* format, 507 const media_codec_info* codecInfo) 508 { 509 TRACE("AVFormatWriter::AllocateCookie()\n"); 510 511 if (fCodecOpened) 512 return B_NOT_ALLOWED; 513 514 BAutolock _(fStreamLock); 515 516 if (_cookie == NULL) 517 return B_BAD_VALUE; 518 519 StreamCookie* cookie = new(std::nothrow) StreamCookie(fFormatContext, 520 &fStreamLock); 521 522 status_t ret = cookie->Init(format, codecInfo); 523 if (ret != B_OK) { 524 delete cookie; 525 return ret; 526 } 527 528 *_cookie = cookie; 529 return B_OK; 530 } 531 532 533 status_t 534 AVFormatWriter::FreeCookie(void* _cookie) 535 { 536 BAutolock _(fStreamLock); 537 538 StreamCookie* cookie = reinterpret_cast<StreamCookie*>(_cookie); 539 delete cookie; 540 541 return B_OK; 542 } 543 544 545 // #pragma mark - 546 547 548 status_t 549 AVFormatWriter::SetCopyright(void* cookie, const char* copyright) 550 { 551 TRACE("AVFormatWriter::SetCopyright(%p, %s)\n", cookie, copyright); 552 553 return B_NOT_SUPPORTED; 554 } 555 556 557 status_t 558 AVFormatWriter::AddTrackInfo(void* _cookie, uint32 code, 559 const void* data, size_t size, uint32 flags) 560 { 561 TRACE("AVFormatWriter::AddTrackInfo(%" B_PRIu32 ", %p, %ld, %" B_PRIu32 ")\n", 562 code, data, size, flags); 563 564 if (fHeaderError != 0) 565 return B_ERROR; 566 567 StreamCookie* cookie = reinterpret_cast<StreamCookie*>(_cookie); 568 return cookie->AddTrackInfo(code, data, size, flags); 569 } 570 571 572 status_t 573 AVFormatWriter::WriteChunk(void* _cookie, const void* chunkBuffer, 574 size_t chunkSize, media_encode_info* encodeInfo) 575 { 576 TRACE_PACKET("AVFormatWriter::WriteChunk(%p, %ld, %p)\n", chunkBuffer, 577 chunkSize, encodeInfo); 578 579 if (fHeaderError != 0) 580 return B_ERROR; 581 582 StreamCookie* cookie = reinterpret_cast<StreamCookie*>(_cookie); 583 return cookie->WriteChunk(chunkBuffer, chunkSize, encodeInfo); 584 } 585 586 587 // #pragma mark - I/O hooks 588 589 590 /*static*/ int 591 AVFormatWriter::_Write(void* cookie, uint8* buffer, int bufferSize) 592 { 593 TRACE_IO("AVFormatWriter::_Write(%p, %p, %d)\n", 594 cookie, buffer, bufferSize); 595 596 AVFormatWriter* writer = reinterpret_cast<AVFormatWriter*>(cookie); 597 598 ssize_t written = writer->fTarget->Write(buffer, bufferSize); 599 600 TRACE_IO(" written: %ld\n", written); 601 return (int)written; 602 603 } 604 605 606 /*static*/ off_t 607 AVFormatWriter::_Seek(void* cookie, off_t offset, int whence) 608 { 609 TRACE_IO("AVFormatWriter::_Seek(%p, %lld, %d)\n", 610 cookie, offset, whence); 611 612 AVFormatWriter* writer = reinterpret_cast<AVFormatWriter*>(cookie); 613 614 BMediaIO* mediaIO = dynamic_cast<BMediaIO*>(writer->fTarget); 615 if (mediaIO == NULL) 616 return -1; 617 618 // Support for special file size retrieval API without seeking anywhere: 619 if (whence == AVSEEK_SIZE) { 620 off_t size; 621 if (mediaIO->GetSize(&size) == B_OK) 622 return size; 623 624 return -1; 625 } 626 627 off_t position = mediaIO->Seek(offset, whence); 628 TRACE_IO(" position: %lld\n", position); 629 if (position < 0) 630 return -1; 631 632 return position; 633 } 634 635 636