git.sesse.net Git - casparcg/blob - modules/ffmpeg/consumer/streaming_consumer.cpp

   1 #include "../StdAfx.h"
   2
   3 #include "ffmpeg_consumer.h"
   4
   5 #include "../ffmpeg_error.h"
   6 #include "../producer/util/util.h"
   7
   8 #include <common/except.h>
   9 #include <common/executor.h>
  10 #include <common/assert.h>
  11 #include <common/utf.h>
  12 #include <common/future.h>
  13 #include <common/diagnostics/graph.h>
  14 #include <common/env.h>
  15 #include <common/scope_exit.h>
  16 #include <common/ptree.h>
  17 #include <common/param.h>
  18 #include <common/semaphore.h>
  19
  20 #include <core/consumer/frame_consumer.h>
  21 #include <core/frame/frame.h>
  22 #include <core/frame/audio_channel_layout.h>
  23 #include <core/video_format.h>
  24 #include <core/monitor/monitor.h>
  25 #include <core/help/help_repository.h>
  26 #include <core/help/help_sink.h>
  27
  28 #include <boost/noncopyable.hpp>
  29 #include <boost/rational.hpp>
  30 #include <boost/format.hpp>
  31 #include <boost/algorithm/string/predicate.hpp>
  32 #include <boost/property_tree/ptree.hpp>
  33
  34 #pragma warning(push)
  35 #pragma warning(disable: 4244)
  36 #pragma warning(disable: 4245)
  37 #include <boost/crc.hpp>
  38 #pragma warning(pop)
  39
  40 #include <tbb/atomic.h>
  41 #include <tbb/concurrent_queue.h>
  42 #include <tbb/parallel_invoke.h>
  43 #include <tbb/parallel_for.h>
  44
  45 #include <numeric>
  46
  47 #pragma warning(push)
  48 #pragma warning(disable: 4244)
  49
  50 extern "C"
  51 {
  52         #define __STDC_CONSTANT_MACROS
  53         #define __STDC_LIMIT_MACROS
  54         #include <libavformat/avformat.h>
  55         #include <libavcodec/avcodec.h>
  56         #include <libavutil/avutil.h>
  57         #include <libavutil/frame.h>
  58         #include <libavutil/opt.h>
  59         #include <libavutil/imgutils.h>
  60         #include <libavutil/parseutils.h>
  61         #include <libavfilter/avfilter.h>
  62         #include <libavfilter/buffersink.h>
  63         #include <libavfilter/buffersrc.h>
  64 }
  65
  66 #pragma warning(pop)
  67
  68 namespace caspar { namespace ffmpeg { namespace {
  69
  70 bool is_pcm_s24le_not_supported(const AVFormatContext& container)
  71 {
  72         auto name = std::string(container.oformat->name);
  73
  74         if (name == "mp4" || name == "dv")
  75                 return true;
  76
  77         return false;
  78 }
  79
  80 class ffmpeg_consumer
  81 {
  82 public:
  83         // Static Members
  84
  85 private:
  86         const spl::shared_ptr<diagnostics::graph>       graph_;
  87         core::monitor::subject                                          subject_;
  88         boost::filesystem::path                                         path_;
  89
  90         std::map<std::string, std::string>                      options_;
  91
  92         core::video_format_desc                                         in_video_format_;
  93         core::audio_channel_layout                                      in_channel_layout_                      = core::audio_channel_layout::invalid();
  94
  95         std::shared_ptr<AVFormatContext>                        oc_;
  96         tbb::atomic<bool>                                                       abort_request_;
  97
  98         std::shared_ptr<AVStream>                                       video_st_;
  99         std::shared_ptr<AVStream>                                       audio_st_;
 100
 101         std::int64_t                                                            video_pts_;
 102         std::int64_t                                                            audio_pts_;
 103
 104     AVFilterContext*                                                    audio_graph_in_;
 105     AVFilterContext*                                                    audio_graph_out_;
 106     std::shared_ptr<AVFilterGraph>                              audio_graph_;
 107
 108     AVFilterContext*                                                    video_graph_in_;
 109     AVFilterContext*                                                    video_graph_out_;
 110     std::shared_ptr<AVFilterGraph>                              video_graph_;
 111
 112         executor                                                                        video_encoder_executor_;
 113         executor                                                                        audio_encoder_executor_;
 114
 115         semaphore                                                                       tokens_                                         { 0 };
 116
 117         tbb::atomic<int64_t>                                            current_encoding_delay_;
 118
 119         executor                                                                        write_executor_;
 120
 121 public:
 122
 123         ffmpeg_consumer(
 124                         std::string path,
 125                         std::string options)
 126                 : path_(path)
 127                 , video_pts_(0)
 128                 , audio_pts_(0)
 129                 , audio_encoder_executor_(print() + L" audio_encoder")
 130                 , video_encoder_executor_(print() + L" video_encoder")
 131                 , write_executor_(print() + L" io")
 132         {
 133                 abort_request_ = false;
 134                 current_encoding_delay_ = 0;
 135
 136                 for(auto it =
 137                                 boost::sregex_iterator(
 138                                         options.begin(),
 139                                         options.end(),
 140                                         boost::regex("-(?<NAME>[^-\\s]+)(\\s+(?<VALUE>[^\\s]+))?"));
 141                         it != boost::sregex_iterator();
 142                         ++it)
 143                 {
 144                         options_[(*it)["NAME"].str()] = (*it)["VALUE"].matched ? (*it)["VALUE"].str() : "";
 145                 }
 146
 147         if (options_.find("threads") == options_.end())
 148             options_["threads"] = "auto";
 149
 150                 tokens_.release(
 151                         std::max(
 152                                 1,
 153                                 try_remove_arg<int>(
 154                                         options_,
 155                                         boost::regex("tokens")).get_value_or(2)));
 156         }
 157
 158         ~ffmpeg_consumer()
 159         {
 160                 if(oc_)
 161                 {
 162                         video_encoder_executor_.begin_invoke([&] { encode_video(core::const_frame::empty(), nullptr); });
 163                         audio_encoder_executor_.begin_invoke([&] { encode_audio(core::const_frame::empty(), nullptr); });
 164
 165                         video_encoder_executor_.stop();
 166                         audio_encoder_executor_.stop();
 167                         video_encoder_executor_.join();
 168                         audio_encoder_executor_.join();
 169
 170                         video_graph_.reset();
 171                         audio_graph_.reset();
 172                         video_st_.reset();
 173                         audio_st_.reset();
 174
 175                         write_packet(nullptr, nullptr);
 176
 177                         write_executor_.stop();
 178                         write_executor_.join();
 179
 180                         FF(av_write_trailer(oc_.get()));
 181
 182                         if (!(oc_->oformat->flags & AVFMT_NOFILE) && oc_->pb)
 183                                 avio_close(oc_->pb);
 184
 185                         oc_.reset();
 186                 }
 187         }
 188
 189         void initialize(
 190                         const core::video_format_desc& format_desc,
 191                         const core::audio_channel_layout& channel_layout)
 192         {
 193                 try
 194                 {
 195                         static boost::regex prot_exp("^.+:.*" );
 196
 197                         if(!boost::regex_match(
 198                                         path_.string(),
 199                                         prot_exp))
 200                         {
 201                                 if(!path_.is_complete())
 202                                 {
 203                                         path_ =
 204                                                 u8(
 205                                                         env::media_folder()) +
 206                                                         path_.string();
 207                                 }
 208
 209                                 if(boost::filesystem::exists(path_))
 210                                         boost::filesystem::remove(path_);
 211                         }
 212
 213                         graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));
 214                         graph_->set_color("dropped-frame", diagnostics::color(0.3f, 0.6f, 0.3f));
 215                         graph_->set_text(print());
 216                         diagnostics::register_graph(graph_);
 217
 218                         const auto oformat_name =
 219                                 try_remove_arg<std::string>(
 220                                         options_,
 221                                         boost::regex("^f|format$"));
 222
 223                         AVFormatContext* oc;
 224
 225                         FF(avformat_alloc_output_context2(
 226                                 &oc,
 227                                 nullptr,
 228                                 oformat_name && !oformat_name->empty() ? oformat_name->c_str() : nullptr,
 229                                 path_.string().c_str()));
 230
 231                         oc_.reset(
 232                                 oc,
 233                                 avformat_free_context);
 234
 235                         CASPAR_VERIFY(oc_->oformat);
 236
 237                         oc_->interrupt_callback.callback = ffmpeg_consumer::interrupt_cb;
 238                         oc_->interrupt_callback.opaque   = this;
 239
 240                         CASPAR_VERIFY(format_desc.format != core::video_format::invalid);
 241
 242                         in_video_format_ = format_desc;
 243                         in_channel_layout_ = channel_layout;
 244
 245                         CASPAR_VERIFY(oc_->oformat);
 246
 247                         const auto video_codec_name =
 248                                 try_remove_arg<std::string>(
 249                                         options_,
 250                                         boost::regex("^c:v|codec:v|vcodec$"));
 251
 252                         const auto video_codec =
 253                                 video_codec_name
 254                                         ? avcodec_find_encoder_by_name(video_codec_name->c_str())
 255                                         : avcodec_find_encoder(oc_->oformat->video_codec);
 256
 257                         const auto audio_codec_name =
 258                                 try_remove_arg<std::string>(
 259                                         options_,
 260                                          boost::regex("^c:a|codec:a|acodec$"));
 261
 262                         const auto audio_codec =
 263                                 audio_codec_name
 264                                         ? avcodec_find_encoder_by_name(audio_codec_name->c_str())
 265                                         : (is_pcm_s24le_not_supported(*oc_)
 266                                                 ? avcodec_find_encoder(oc_->oformat->audio_codec)
 267                                                 : avcodec_find_encoder_by_name("pcm_s24le"));
 268
 269                         if (!video_codec)
 270                                 CASPAR_THROW_EXCEPTION(user_error() << msg_info(
 271                                                 "Failed to find video codec " + (video_codec_name
 272                                                                 ? *video_codec_name
 273                                                                 : "with id " + boost::lexical_cast<std::string>(
 274                                                                                 oc_->oformat->video_codec))));
 275                         if (!audio_codec)
 276                                 CASPAR_THROW_EXCEPTION(user_error() << msg_info(
 277                                                 "Failed to find audio codec " + (audio_codec_name
 278                                                                 ? *audio_codec_name
 279                                                                 : "with id " + boost::lexical_cast<std::string>(
 280                                                                                 oc_->oformat->audio_codec))));
 281
 282                         // Filters
 283
 284                         {
 285                                 configure_video_filters(
 286                                         *video_codec,
 287                                         try_remove_arg<std::string>(options_,
 288                                         boost::regex("vf|f:v|filter:v")).get_value_or(""));
 289
 290                                 configure_audio_filters(
 291                                         *audio_codec,
 292                                         try_remove_arg<std::string>(options_,
 293                                         boost::regex("af|f:a|filter:a")).get_value_or(""));
 294                         }
 295
 296                         // Encoders
 297
 298                         {
 299                                 auto video_options = options_;
 300                                 auto audio_options = options_;
 301
 302                                 video_st_ = open_encoder(
 303                                         *video_codec,
 304                                         video_options);
 305
 306                                 audio_st_ = open_encoder(
 307                                         *audio_codec,
 308                                         audio_options);
 309
 310                                 auto it = options_.begin();
 311                                 while(it != options_.end())
 312                                 {
 313                                         if(video_options.find(it->first) == video_options.end() || audio_options.find(it->first) == audio_options.end())
 314                                                 it = options_.erase(it);
 315                                         else
 316                                                 ++it;
 317                                 }
 318                         }
 319
 320                         // Output
 321                         {
 322                                 AVDictionary* av_opts = nullptr;
 323
 324                                 to_dict(
 325                                         &av_opts,
 326                                         std::move(options_));
 327
 328                                 CASPAR_SCOPE_EXIT
 329                                 {
 330                                         av_dict_free(&av_opts);
 331                                 };
 332
 333                                 if (!(oc_->oformat->flags & AVFMT_NOFILE))
 334                                 {
 335                                         FF(avio_open2(
 336                                                 &oc_->pb,
 337                                                 path_.string().c_str(),
 338                                                 AVIO_FLAG_WRITE,
 339                                                 &oc_->interrupt_callback,
 340                                                 &av_opts));
 341                                 }
 342
 343                                 FF(avformat_write_header(
 344                                         oc_.get(),
 345                                         &av_opts));
 346
 347                                 options_ = to_map(av_opts);
 348                         }
 349
 350                         // Dump Info
 351
 352                         av_dump_format(
 353                                 oc_.get(),
 354                                 0,
 355                                 oc_->filename,
 356                                 1);
 357
 358                         for (const auto& option : options_)
 359                         {
 360                                 CASPAR_LOG(warning)
 361                                         << L"Invalid option: -"
 362                                         << u16(option.first)
 363                                         << L" "
 364                                         << u16(option.second);
 365                         }
 366                 }
 367                 catch(...)
 368                 {
 369                         video_st_.reset();
 370                         audio_st_.reset();
 371                         oc_.reset();
 372                         throw;
 373                 }
 374         }
 375
 376         core::monitor::subject& monitor_output()
 377         {
 378                 return subject_;
 379         }
 380
 381         void send(core::const_frame frame)
 382         {
 383                 CASPAR_VERIFY(in_video_format_.format != core::video_format::invalid);
 384
 385                 auto frame_timer = spl::make_shared<caspar::timer>();
 386
 387                 std::shared_ptr<void> token(
 388                         nullptr,
 389                         [this, frame, frame_timer](void*)
 390                         {
 391                                 tokens_.release();
 392                                 current_encoding_delay_ = frame.get_age_millis();
 393                                 graph_->set_value("frame-time", frame_timer->elapsed() * in_video_format_.fps * 0.5);
 394                         });
 395                 tokens_.acquire();
 396
 397                 video_encoder_executor_.begin_invoke([=]() mutable
 398                 {
 399                         encode_video(
 400                                 frame,
 401                                 token);
 402                 });
 403
 404                 audio_encoder_executor_.begin_invoke([=]() mutable
 405                 {
 406                         encode_audio(
 407                                 frame,
 408                                 token);
 409                 });
 410         }
 411
 412         bool ready_for_frame() const
 413         {
 414                 return tokens_.permits() > 0;
 415         }
 416
 417         void mark_dropped()
 418         {
 419                 graph_->set_tag(diagnostics::tag_severity::WARNING, "dropped-frame");
 420         }
 421
 422         std::wstring print() const
 423         {
 424                 return L"ffmpeg_consumer[" + u16(path_.string()) + L"]";
 425         }
 426
 427         int64_t presentation_frame_age_millis() const
 428         {
 429                 return current_encoding_delay_;
 430         }
 431
 432 private:
 433
 434         static int interrupt_cb(void* ctx)
 435         {
 436                 CASPAR_ASSERT(ctx);
 437                 return reinterpret_cast<ffmpeg_consumer*>(ctx)->abort_request_;
 438         }
 439
 440         std::shared_ptr<AVStream> open_encoder(
 441                         const AVCodec& codec,
 442                         std::map<std::string,
 443                         std::string>& options)
 444         {
 445                 auto st =
 446                         avformat_new_stream(
 447                                 oc_.get(),
 448                                 &codec);
 449
 450                 if (!st)
 451                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate video-stream.") << boost::errinfo_api_function("avformat_new_stream"));
 452
 453                 auto enc = st->codec;
 454
 455                 CASPAR_VERIFY(enc);
 456
 457                 switch(enc->codec_type)
 458                 {
 459                         case AVMEDIA_TYPE_VIDEO:
 460                         {
 461                                 enc->time_base                          = video_graph_out_->inputs[0]->time_base;
 462                                 enc->pix_fmt                                    = static_cast<AVPixelFormat>(video_graph_out_->inputs[0]->format);
 463                                 enc->sample_aspect_ratio                = st->sample_aspect_ratio = video_graph_out_->inputs[0]->sample_aspect_ratio;
 464                                 enc->width                                      = video_graph_out_->inputs[0]->w;
 465                                 enc->height                                     = video_graph_out_->inputs[0]->h;
 466                                 enc->bit_rate_tolerance         = 400 * 1000000;
 467
 468                                 break;
 469                         }
 470                         case AVMEDIA_TYPE_AUDIO:
 471                         {
 472                                 enc->time_base                          = audio_graph_out_->inputs[0]->time_base;
 473                                 enc->sample_fmt                         = static_cast<AVSampleFormat>(audio_graph_out_->inputs[0]->format);
 474                                 enc->sample_rate                                = audio_graph_out_->inputs[0]->sample_rate;
 475                                 enc->channel_layout                     = audio_graph_out_->inputs[0]->channel_layout;
 476                                 enc->channels                           = audio_graph_out_->inputs[0]->channels;
 477
 478                                 break;
 479                         }
 480                 }
 481
 482                 if(oc_->oformat->flags & AVFMT_GLOBALHEADER)
 483                         enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
 484
 485                 static const std::array<std::string, 4> char_id_map = {{"v", "a", "d", "s"}};
 486
 487                 const auto char_id = char_id_map.at(enc->codec_type);
 488
 489                 const auto codec_opts =
 490                         remove_options(
 491                                 options,
 492                                 boost::regex("^(" + char_id + "?[^:]+):" + char_id + "$"));
 493
 494                 AVDictionary* av_codec_opts = nullptr;
 495
 496                 to_dict(
 497                         &av_codec_opts,
 498                         options);
 499
 500                 to_dict(
 501                         &av_codec_opts,
 502                         codec_opts);
 503
 504                 options.clear();
 505
 506                 FF(avcodec_open2(
 507                         enc,
 508                         &codec,
 509                         av_codec_opts ? &av_codec_opts : nullptr));
 510
 511                 if(av_codec_opts)
 512                 {
 513                         auto t =
 514                                 av_dict_get(
 515                                         av_codec_opts,
 516                                         "",
 517                                          nullptr,
 518                                         AV_DICT_IGNORE_SUFFIX);
 519
 520                         while(t)
 521                         {
 522                                 options[t->key + (codec_opts.find(t->key) != codec_opts.end() ? ":" + char_id : "")] = t->value;
 523
 524                                 t = av_dict_get(
 525                                                 av_codec_opts,
 526                                                 "",
 527                                                 t,
 528                                                 AV_DICT_IGNORE_SUFFIX);
 529                         }
 530
 531                         av_dict_free(&av_codec_opts);
 532                 }
 533
 534                 if(enc->codec_type == AVMEDIA_TYPE_AUDIO && !(codec.capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
 535                 {
 536                         CASPAR_ASSERT(enc->frame_size > 0);
 537                         av_buffersink_set_frame_size(audio_graph_out_,
 538                                                                                  enc->frame_size);
 539                 }
 540
 541                 return std::shared_ptr<AVStream>(st, [this](AVStream* st)
 542                 {
 543                         avcodec_close(st->codec);
 544                 });
 545         }
 546
 547         void configure_video_filters(
 548                         const AVCodec& codec,
 549                         const std::string& filtergraph)
 550         {
 551                 video_graph_.reset(
 552                                 avfilter_graph_alloc(),
 553                                 [](AVFilterGraph* p)
 554                                 {
 555                                         avfilter_graph_free(&p);
 556                                 });
 557
 558                 video_graph_->nb_threads  = boost::thread::hardware_concurrency()/2;
 559                 video_graph_->thread_type = AVFILTER_THREAD_SLICE;
 560
 561                 const auto sample_aspect_ratio =
 562                         boost::rational<int>(
 563                                         in_video_format_.square_width,
 564                                         in_video_format_.square_height) /
 565                         boost::rational<int>(
 566                                         in_video_format_.width,
 567                                         in_video_format_.height);
 568
 569                 const auto vsrc_options = (boost::format("video_size=%1%x%2%:pix_fmt=%3%:time_base=%4%/%5%:pixel_aspect=%6%/%7%:frame_rate=%8%/%9%")
 570                         % in_video_format_.width % in_video_format_.height
 571                         % AV_PIX_FMT_BGRA
 572                         % in_video_format_.duration     % in_video_format_.time_scale
 573                         % sample_aspect_ratio.numerator() % sample_aspect_ratio.denominator()
 574                         % in_video_format_.time_scale % in_video_format_.duration).str();
 575
 576                 AVFilterContext* filt_vsrc = nullptr;
 577                 FF(avfilter_graph_create_filter(
 578                                 &filt_vsrc,
 579                                 avfilter_get_by_name("buffer"),
 580                                 "ffmpeg_consumer_buffer",
 581                                 vsrc_options.c_str(),
 582                                 nullptr,
 583                                 video_graph_.get()));
 584
 585                 AVFilterContext* filt_vsink = nullptr;
 586                 FF(avfilter_graph_create_filter(
 587                                 &filt_vsink,
 588                                 avfilter_get_by_name("buffersink"),
 589                                 "ffmpeg_consumer_buffersink",
 590                                 nullptr,
 591                                 nullptr,
 592                                 video_graph_.get()));
 593
 594 #pragma warning (push)
 595 #pragma warning (disable : 4245)
 596
 597                 FF(av_opt_set_int_list(
 598                                 filt_vsink,
 599                                 "pix_fmts",
 600                                 codec.pix_fmts,
 601                                 -1,
 602                                 AV_OPT_SEARCH_CHILDREN));
 603
 604 #pragma warning (pop)
 605
 606                 configure_filtergraph(
 607                                 *video_graph_,
 608                                 filtergraph,
 609                                 *filt_vsrc,
 610                                 *filt_vsink);
 611
 612                 video_graph_in_  = filt_vsrc;
 613                 video_graph_out_ = filt_vsink;
 614
 615                 CASPAR_LOG(info)
 616                         <<      u16(std::string("\n")
 617                                 + avfilter_graph_dump(
 618                                                 video_graph_.get(),
 619                                                 nullptr));
 620         }
 621
 622         void configure_audio_filters(
 623                         const AVCodec& codec,
 624                         const std::string& filtergraph)
 625         {
 626                 audio_graph_.reset(
 627                         avfilter_graph_alloc(),
 628                         [](AVFilterGraph* p)
 629                         {
 630                                 avfilter_graph_free(&p);
 631                         });
 632
 633                 audio_graph_->nb_threads  = boost::thread::hardware_concurrency()/2;
 634                 audio_graph_->thread_type = AVFILTER_THREAD_SLICE;
 635
 636                 const auto asrc_options = (boost::format("sample_rate=%1%:sample_fmt=%2%:channels=%3%:time_base=%4%/%5%:channel_layout=%6%")
 637                         % in_video_format_.audio_sample_rate
 638                         % av_get_sample_fmt_name(AV_SAMPLE_FMT_S32)
 639                         % in_channel_layout_.num_channels
 640                         % 1     % in_video_format_.audio_sample_rate
 641                         % boost::io::group(
 642                                 std::hex,
 643                                 std::showbase,
 644                                 av_get_default_channel_layout(in_channel_layout_.num_channels))).str();
 645
 646                 AVFilterContext* filt_asrc = nullptr;
 647                 FF(avfilter_graph_create_filter(
 648                         &filt_asrc,
 649                         avfilter_get_by_name("abuffer"),
 650                         "ffmpeg_consumer_abuffer",
 651                         asrc_options.c_str(),
 652                         nullptr,
 653                         audio_graph_.get()));
 654
 655                 AVFilterContext* filt_asink = nullptr;
 656                 FF(avfilter_graph_create_filter(
 657                         &filt_asink,
 658                         avfilter_get_by_name("abuffersink"),
 659                         "ffmpeg_consumer_abuffersink",
 660                         nullptr,
 661                         nullptr,
 662                         audio_graph_.get()));
 663
 664 #pragma warning (push)
 665 #pragma warning (disable : 4245)
 666
 667                 FF(av_opt_set_int(
 668                         filt_asink,
 669                         "all_channel_counts",
 670                         1,
 671                         AV_OPT_SEARCH_CHILDREN));
 672
 673                 FF(av_opt_set_int_list(
 674                         filt_asink,
 675                         "sample_fmts",
 676                         codec.sample_fmts,
 677                         -1,
 678                         AV_OPT_SEARCH_CHILDREN));
 679
 680                 FF(av_opt_set_int_list(
 681                         filt_asink,
 682                         "channel_layouts",
 683                         codec.channel_layouts,
 684                         -1,
 685                         AV_OPT_SEARCH_CHILDREN));
 686
 687                 FF(av_opt_set_int_list(
 688                         filt_asink,
 689                         "sample_rates" ,
 690                         codec.supported_samplerates,
 691                         -1,
 692                         AV_OPT_SEARCH_CHILDREN));
 693
 694 #pragma warning (pop)
 695
 696                 configure_filtergraph(
 697                         *audio_graph_,
 698                         filtergraph,
 699                         *filt_asrc,
 700                         *filt_asink);
 701
 702                 audio_graph_in_  = filt_asrc;
 703                 audio_graph_out_ = filt_asink;
 704
 705                 CASPAR_LOG(info)
 706                         <<      u16(std::string("\n")
 707                                 + avfilter_graph_dump(
 708                                         audio_graph_.get(),
 709                                         nullptr));
 710         }
 711
 712         void configure_filtergraph(
 713                         AVFilterGraph& graph,
 714                         const std::string& filtergraph,
 715                         AVFilterContext& source_ctx,
 716                         AVFilterContext& sink_ctx)
 717         {
 718                 AVFilterInOut* outputs = nullptr;
 719                 AVFilterInOut* inputs = nullptr;
 720
 721                 try
 722                 {
 723                         if(!filtergraph.empty())
 724                         {
 725                                 outputs = avfilter_inout_alloc();
 726                                 inputs  = avfilter_inout_alloc();
 727
 728                                 CASPAR_VERIFY(outputs && inputs);
 729
 730                                 outputs->name       = av_strdup("in");
 731                                 outputs->filter_ctx = &source_ctx;
 732                                 outputs->pad_idx    = 0;
 733                                 outputs->next       = nullptr;
 734
 735                                 inputs->name        = av_strdup("out");
 736                                 inputs->filter_ctx  = &sink_ctx;
 737                                 inputs->pad_idx     = 0;
 738                                 inputs->next        = nullptr;
 739
 740                                 FF(avfilter_graph_parse(
 741                                         &graph,
 742                                         filtergraph.c_str(),
 743                                         inputs,
 744                                         outputs,
 745                                         nullptr));
 746                         }
 747                         else
 748                         {
 749                                 FF(avfilter_link(
 750                                         &source_ctx,
 751                                         0,
 752                                         &sink_ctx,
 753                                         0));
 754                         }
 755
 756                         FF(avfilter_graph_config(
 757                                 &graph,
 758                                 nullptr));
 759                 }
 760                 catch(...)
 761                 {
 762                         avfilter_inout_free(&outputs);
 763                         avfilter_inout_free(&inputs);
 764                         throw;
 765                 }
 766         }
 767
 768         void encode_video(core::const_frame frame_ptr, std::shared_ptr<void> token)
 769         {
 770                 if(!video_st_)
 771                         return;
 772
 773                 auto enc = video_st_->codec;
 774
 775                 if(frame_ptr != core::const_frame::empty())
 776                 {
 777                         auto src_av_frame = create_frame();
 778
 779                         const auto sample_aspect_ratio =
 780                                 boost::rational<int>(
 781                                         in_video_format_.square_width,
 782                                         in_video_format_.square_height) /
 783                                 boost::rational<int>(
 784                                         in_video_format_.width,
 785                                         in_video_format_.height);
 786
 787                         src_av_frame->format                                            = AV_PIX_FMT_BGRA;
 788                         src_av_frame->width                                             = in_video_format_.width;
 789                         src_av_frame->height                                            = in_video_format_.height;
 790                         src_av_frame->sample_aspect_ratio.num   = sample_aspect_ratio.numerator();
 791                         src_av_frame->sample_aspect_ratio.den   = sample_aspect_ratio.denominator();
 792                         src_av_frame->pts                                               = video_pts_;
 793
 794                         video_pts_ += 1;
 795
 796                         FF(av_image_fill_arrays(
 797                                 src_av_frame->data,
 798                                 src_av_frame->linesize,
 799                                 frame_ptr.image_data().begin(),
 800                                 static_cast<AVPixelFormat>(src_av_frame->format),
 801                                 in_video_format_.width,
 802                                 in_video_format_.height,
 803                                 1));
 804
 805                         FF(av_buffersrc_add_frame(
 806                                 video_graph_in_,
 807                                 src_av_frame.get()));
 808                 }
 809
 810                 int ret = 0;
 811
 812                 while(ret >= 0)
 813                 {
 814                         auto filt_frame = create_frame();
 815
 816                         ret = av_buffersink_get_frame(
 817                                 video_graph_out_,
 818                                 filt_frame.get());
 819
 820                         video_encoder_executor_.begin_invoke([=]
 821                         {
 822                                 if(ret == AVERROR_EOF)
 823                                 {
 824                                         if(enc->codec->capabilities & CODEC_CAP_DELAY)
 825                                         {
 826                                                 while(encode_av_frame(
 827                                                                 *video_st_,
 828                                                                 avcodec_encode_video2,
 829                                                                 nullptr, token))
 830                                                 {
 831                                                         boost::this_thread::yield(); // TODO:
 832                                                 }
 833                                         }
 834                                 }
 835                                 else if(ret != AVERROR(EAGAIN))
 836                                 {
 837                                         FF_RET(ret, "av_buffersink_get_frame");
 838
 839                                         if (filt_frame->interlaced_frame)
 840                                         {
 841                                                 if (enc->codec->id == AV_CODEC_ID_MJPEG)
 842                                                         enc->field_order = filt_frame->top_field_first ? AV_FIELD_TT : AV_FIELD_BB;
 843                                                 else
 844                                                         enc->field_order = filt_frame->top_field_first ? AV_FIELD_TB : AV_FIELD_BT;
 845                                         }
 846                                         else
 847                                                 enc->field_order = AV_FIELD_PROGRESSIVE;
 848
 849                                         filt_frame->quality = enc->global_quality;
 850
 851                                         if (!enc->me_threshold)
 852                                                 filt_frame->pict_type = AV_PICTURE_TYPE_NONE;
 853
 854                                         encode_av_frame(
 855                                                 *video_st_,
 856                                                 avcodec_encode_video2,
 857                                                 filt_frame,
 858                                                 token);
 859
 860                                         boost::this_thread::yield(); // TODO:
 861                                 }
 862                         });
 863                 }
 864         }
 865
 866         void encode_audio(core::const_frame frame_ptr, std::shared_ptr<void> token)
 867         {
 868                 if(!audio_st_)
 869                         return;
 870
 871                 auto enc = audio_st_->codec;
 872
 873                 if(frame_ptr != core::const_frame::empty())
 874                 {
 875                         auto src_av_frame = create_frame();
 876
 877                         src_av_frame->channels           = in_channel_layout_.num_channels;
 878                         src_av_frame->channel_layout = av_get_default_channel_layout(in_channel_layout_.num_channels);
 879                         src_av_frame->sample_rate        = in_video_format_.audio_sample_rate;
 880                         src_av_frame->nb_samples         = static_cast<int>(frame_ptr.audio_data().size()) / src_av_frame->channels;
 881                         src_av_frame->format             = AV_SAMPLE_FMT_S32;
 882                         src_av_frame->pts                        = audio_pts_;
 883
 884                         audio_pts_ += src_av_frame->nb_samples;
 885
 886                         FF(av_samples_fill_arrays(
 887                                         src_av_frame->extended_data,
 888                                         src_av_frame->linesize,
 889                                         reinterpret_cast<const std::uint8_t*>(&*frame_ptr.audio_data().begin()),
 890                                         src_av_frame->channels,
 891                                         src_av_frame->nb_samples,
 892                                         static_cast<AVSampleFormat>(src_av_frame->format),
 893                                         16));
 894
 895                         FF(av_buffersrc_add_frame(
 896                                         audio_graph_in_,
 897                                         src_av_frame.get()));
 898                 }
 899
 900                 int ret = 0;
 901
 902                 while(ret >= 0)
 903                 {
 904                         auto filt_frame = create_frame();
 905
 906                         ret = av_buffersink_get_frame(
 907                                 audio_graph_out_,
 908                                 filt_frame.get());
 909
 910                         audio_encoder_executor_.begin_invoke([=]
 911                         {
 912                                 if(ret == AVERROR_EOF)
 913                                 {
 914                                         if(enc->codec->capabilities & CODEC_CAP_DELAY)
 915                                         {
 916                                                 while(encode_av_frame(
 917                                                                 *audio_st_,
 918                                                                 avcodec_encode_audio2,
 919                                                                 nullptr,
 920                                                                 token))
 921                                                 {
 922                                                         boost::this_thread::yield(); // TODO:
 923                                                 }
 924                                         }
 925                                 }
 926                                 else if(ret != AVERROR(EAGAIN))
 927                                 {
 928                                         FF_RET(
 929                                                 ret,
 930                                                 "av_buffersink_get_frame");
 931
 932                                         encode_av_frame(
 933                                                 *audio_st_,
 934                                                 avcodec_encode_audio2,
 935                                                 filt_frame,
 936                                                 token);
 937
 938                                         boost::this_thread::yield(); // TODO:
 939                                 }
 940                         });
 941                 }
 942         }
 943
 944         template<typename F>
 945         bool encode_av_frame(
 946                         AVStream& st,
 947                         const F& func,
 948                         const std::shared_ptr<AVFrame>& src_av_frame,
 949                         std::shared_ptr<void> token)
 950         {
 951                 AVPacket pkt = {};
 952                 av_init_packet(&pkt);
 953
 954                 int got_packet = 0;
 955
 956                 FF(func(
 957                         st.codec,
 958                         &pkt,
 959                         src_av_frame.get(),
 960                         &got_packet));
 961
 962                 if(!got_packet || pkt.size <= 0)
 963                         return false;
 964
 965                 pkt.stream_index = st.index;
 966
 967                 if (pkt.pts != AV_NOPTS_VALUE)
 968                 {
 969                         pkt.pts =
 970                                 av_rescale_q(
 971                                         pkt.pts,
 972                                         st.codec->time_base,
 973                                         st.time_base);
 974                 }
 975
 976                 if (pkt.dts != AV_NOPTS_VALUE)
 977                 {
 978                         pkt.dts =
 979                                 av_rescale_q(
 980                                         pkt.dts,
 981                                         st.codec->time_base,
 982                                         st.time_base);
 983                 }
 984
 985                 pkt.duration =
 986                         static_cast<int>(
 987                                 av_rescale_q(
 988                                         pkt.duration,
 989                                         st.codec->time_base, st.time_base));
 990
 991                 write_packet(
 992                         std::shared_ptr<AVPacket>(
 993                                 new AVPacket(pkt),
 994                                 [](AVPacket* p)
 995                                 {
 996                                         av_free_packet(p);
 997                                         delete p;
 998                                 }), token);
 999
1000                 return true;
1001         }
1002
1003         void write_packet(
1004                         const std::shared_ptr<AVPacket>& pkt_ptr,
1005                         std::shared_ptr<void> token)
1006         {
1007                 write_executor_.begin_invoke([this, pkt_ptr, token]() mutable
1008                 {
1009                         FF(av_interleaved_write_frame(
1010                                 oc_.get(),
1011                                 pkt_ptr.get()));
1012                 });
1013         }
1014
1015         template<typename T>
1016         static boost::optional<T> try_remove_arg(
1017                         std::map<std::string, std::string>& options,
1018                         const boost::regex& expr)
1019         {
1020                 for(auto it = options.begin(); it != options.end(); ++it)
1021                 {
1022                         if(boost::regex_search(it->first, expr))
1023                         {
1024                                 auto arg = it->second;
1025                                 options.erase(it);
1026                                 return boost::lexical_cast<T>(arg);
1027                         }
1028                 }
1029
1030                 return boost::optional<T>();
1031         }
1032
1033         static std::map<std::string, std::string> remove_options(
1034                         std::map<std::string, std::string>& options,
1035                         const boost::regex& expr)
1036         {
1037                 std::map<std::string, std::string> result;
1038
1039                 auto it = options.begin();
1040                 while(it != options.end())
1041                 {
1042                         boost::smatch what;
1043                         if(boost::regex_search(it->first, what, expr))
1044                         {
1045                                 result[
1046                                         what.size() > 0 && what[1].matched
1047                                                 ? what[1].str()
1048                                                 : it->first] = it->second;
1049                                 it = options.erase(it);
1050                         }
1051                         else
1052                                 ++it;
1053                 }
1054
1055                 return result;
1056         }
1057
1058         static void to_dict(AVDictionary** dest, const std::map<std::string, std::string>& c)
1059         {
1060                 for (const auto& entry : c)
1061                 {
1062                         av_dict_set(
1063                                 dest,
1064                                 entry.first.c_str(),
1065                                 entry.second.c_str(), 0);
1066                 }
1067         }
1068
1069         static std::map<std::string, std::string> to_map(AVDictionary* dict)
1070         {
1071                 std::map<std::string, std::string> result;
1072
1073                 for(auto t = dict
1074                                 ? av_dict_get(
1075                                         dict,
1076                                         "",
1077                                         nullptr,
1078                                         AV_DICT_IGNORE_SUFFIX)
1079                                 : nullptr;
1080                         t;
1081                         t = av_dict_get(
1082                                 dict,
1083                                 "",
1084                                 t,
1085                                 AV_DICT_IGNORE_SUFFIX))
1086                 {
1087                         result[t->key] = t->value;
1088                 }
1089
1090                 return result;
1091         }
1092 };
1093
1094 int crc16(const std::string& str)
1095 {
1096         boost::crc_16_type result;
1097
1098         result.process_bytes(str.data(), str.length());
1099
1100         return result.checksum();
1101 }
1102
1103 struct ffmpeg_consumer_proxy : public core::frame_consumer
1104 {
1105         const std::string                                       path_;
1106         const std::string                                       options_;
1107         const bool                                                      separate_key_;
1108         const bool                                                      compatibility_mode_;
1109         int                                                                     consumer_index_offset_;
1110
1111         std::unique_ptr<ffmpeg_consumer>        consumer_;
1112         std::unique_ptr<ffmpeg_consumer>        key_only_consumer_;
1113
1114 public:
1115
1116         ffmpeg_consumer_proxy(const std::string& path, const std::string& options, bool separate_key, bool compatibility_mode)
1117                 : path_(path)
1118                 , options_(options)
1119                 , separate_key_(separate_key)
1120                 , compatibility_mode_(compatibility_mode)
1121                 , consumer_index_offset_(crc16(path))
1122         {
1123         }
1124
1125         void initialize(const core::video_format_desc& format_desc, const core::audio_channel_layout& channel_layout, int) override
1126         {
1127                 if (consumer_)
1128                         CASPAR_THROW_EXCEPTION(invalid_operation() << msg_info("Cannot reinitialize ffmpeg-consumer."));
1129
1130                 consumer_.reset(new ffmpeg_consumer(path_, options_));
1131                 consumer_->initialize(format_desc, channel_layout);
1132
1133                 if (separate_key_)
1134                 {
1135                         boost::filesystem::path fill_file(path_);
1136                         auto without_extension = u16(fill_file.parent_path().string() + "/" + fill_file.stem().string());
1137                         auto key_file = without_extension + L"_A" + u16(fill_file.extension().string());
1138
1139                         key_only_consumer_.reset(new ffmpeg_consumer(u8(key_file), options_));
1140                         key_only_consumer_->initialize(format_desc, channel_layout);
1141                 }
1142         }
1143
1144         int64_t presentation_frame_age_millis() const override
1145         {
1146                 return consumer_ ? static_cast<int64_t>(consumer_->presentation_frame_age_millis()) : 0;
1147         }
1148
1149         std::future<bool> send(core::const_frame frame) override
1150         {
1151                 bool ready_for_frame = consumer_->ready_for_frame();
1152
1153                 if (ready_for_frame && separate_key_)
1154                         ready_for_frame = ready_for_frame && key_only_consumer_->ready_for_frame();
1155
1156                 if (ready_for_frame)
1157                 {
1158                         consumer_->send(frame);
1159
1160                         if (separate_key_)
1161                                 key_only_consumer_->send(frame.key_only());
1162                 }
1163                 else
1164                 {
1165                         consumer_->mark_dropped();
1166
1167                         if (separate_key_)
1168                                 key_only_consumer_->mark_dropped();
1169                 }
1170
1171                 return make_ready_future(true);
1172         }
1173
1174         std::wstring print() const override
1175         {
1176                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";
1177         }
1178
1179         std::wstring name() const override
1180         {
1181                 return L"ffmpeg";
1182         }
1183
1184         boost::property_tree::wptree info() const override
1185         {
1186                 boost::property_tree::wptree info;
1187                 info.add(L"type", L"ffmpeg");
1188                 info.add(L"path", u16(path_));
1189                 info.add(L"separate_key", separate_key_);
1190                 return info;
1191         }
1192
1193         bool has_synchronization_clock() const override
1194         {
1195                 return false;
1196         }
1197
1198         int buffer_depth() const override
1199         {
1200                 return -1;
1201         }
1202
1203         int index() const override
1204         {
1205                 return compatibility_mode_ ? 200 : 100000 + consumer_index_offset_;
1206         }
1207
1208         core::monitor::subject& monitor_output()
1209         {
1210                 return consumer_->monitor_output();
1211         }
1212 };
1213
1214 }
1215
1216 void describe_streaming_consumer(core::help_sink& sink, const core::help_repository& repo)
1217 {
1218         sink.short_description(L"For streaming/recording the contents of a channel using FFmpeg.");
1219         sink.syntax(L"FILE,STREAM [filename:string],[url:string] {-[ffmpeg_param1:string] [value1:string] {-[ffmpeg_param2:string] [value2:string] {...}}}");
1220         sink.para()->text(L"For recording or streaming the contents of a channel using FFmpeg");
1221         sink.definitions()
1222                 ->item(L"filename", L"The filename under the media folder including the extension (decides which kind of container format that will be used).")
1223                 ->item(L"url", L"If the filename is given in the form of an URL a network stream will be created instead of a file on disk.")
1224                 ->item(L"ffmpeg_paramX", L"A parameter supported by FFmpeg. For example vcodec or acodec etc.");
1225         sink.para()->text(L"Examples:");
1226         sink.example(L">> ADD 1 FILE output.mov -vcodec dnxhd");
1227         sink.example(L">> ADD 1 FILE output.mov -vcodec prores");
1228         sink.example(L">> ADD 1 FILE output.mov -vcodec dvvideo");
1229         sink.example(L">> ADD 1 FILE output.mov -vcodec libx264 -preset ultrafast -tune fastdecode -crf 25");
1230         sink.example(L">> ADD 1 FILE output.mov -vcodec dnxhd SEPARATE_KEY", L"for creating output.mov with fill and output_A.mov with key/alpha");
1231         sink.example(L">> ADD 1 STREAM udp://<client_ip_address>:9250 -format mpegts -vcodec libx264 -crf 25 -tune zerolatency -preset ultrafast",
1232                 L"for streaming over UDP instead of creating a local file.");
1233 }
1234
1235 spl::shared_ptr<core::frame_consumer> create_streaming_consumer(
1236                 const std::vector<std::wstring>& params, core::interaction_sink*, std::vector<spl::shared_ptr<core::video_channel>> channels)
1237 {
1238         if (params.size() < 1 || (!boost::iequals(params.at(0), L"STREAM") && !boost::iequals(params.at(0), L"FILE")))
1239                 return core::frame_consumer::empty();
1240
1241         auto params2                    = params;
1242         auto separate_key_it    = std::find_if(params2.begin(), params2.end(), param_comparer(L"SEPARATE_KEY"));
1243         bool separate_key               = false;
1244
1245         if (separate_key_it != params2.end())
1246         {
1247                 separate_key = true;
1248                 params2.erase(separate_key_it);
1249         }
1250
1251         auto compatibility_mode = boost::iequals(params.at(0), L"FILE");
1252         auto path                               = u8(params2.size() > 1 ? params2.at(1) : L"");
1253         auto args                               = u8(boost::join(params2, L" "));
1254
1255         return spl::make_shared<ffmpeg_consumer_proxy>(path, args, separate_key, compatibility_mode);
1256 }
1257
1258 spl::shared_ptr<core::frame_consumer> create_preconfigured_streaming_consumer(
1259                 const boost::property_tree::wptree& ptree, core::interaction_sink*, std::vector<spl::shared_ptr<core::video_channel>> channels)
1260 {
1261         return spl::make_shared<ffmpeg_consumer_proxy>(
1262                         u8(ptree_get<std::wstring>(ptree, L"path")),
1263                         u8(ptree.get<std::wstring>(L"args", L"")),
1264                         ptree.get<bool>(L"separate-key", false),
1265                         false);
1266 }
1267
1268 }}