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

   1 /*
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
   3 *
   4 * This file is part of CasparCG (www.casparcg.com).
   5 *
   6 * CasparCG is free software: you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation, either version 3 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * CasparCG is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
  18 *
  19 * Author: Robert Nagy, ronag89@gmail.com
  20 */
  21
  22 #include "../StdAfx.h"
  23
  24 #include "../ffmpeg_error.h"
  25
  26 #include "ffmpeg_consumer.h"
  27
  28 #include "../producer/tbb_avcodec.h"
  29
  30 #include <core/frame/frame.h>
  31 #include <core/mixer/audio/audio_util.h>
  32 #include <core/consumer/frame_consumer.h>
  33 #include <core/video_format.h>
  34
  35 #include <common/array.h>
  36 #include <common/env.h>
  37 #include <common/except.h>
  38 #include <common/executor.h>
  39 #include <common/future.h>
  40 #include <common/diagnostics/graph.h>
  41 #include <common/lock.h>
  42 #include <common/memory.h>
  43 #include <common/param.h>
  44 #include <common/utf.h>
  45 #include <common/assert.h>
  46 #include <common/memshfl.h>
  47
  48 #include <boost/algorithm/string.hpp>
  49 #include <boost/timer.hpp>
  50 #include <boost/property_tree/ptree.hpp>
  51 #include <boost/filesystem.hpp>
  52 #include <boost/range/algorithm.hpp>
  53 #include <boost/range/algorithm_ext.hpp>
  54 #include <boost/lexical_cast.hpp>
  55
  56 #include <tbb/spin_mutex.h>
  57
  58 #include <numeric>
  59
  60 #if defined(_MSC_VER)
  61 #pragma warning (push)
  62 #pragma warning (disable : 4244)
  63 #endif
  64 extern "C"
  65 {
  66         #define __STDC_CONSTANT_MACROS
  67         #define __STDC_LIMIT_MACROS
  68         #include <libavformat/avformat.h>
  69         #include <libswscale/swscale.h>
  70         #include <libavutil/opt.h>
  71         #include <libavutil/pixdesc.h>
  72         #include <libavutil/parseutils.h>
  73         #include <libavutil/samplefmt.h>
  74         #include <libswresample/swresample.h>
  75 }
  76 #if defined(_MSC_VER)
  77 #pragma warning (pop)
  78 #endif
  79
  80 namespace caspar { namespace ffmpeg {
  81
  82 int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
  83 {
  84         AVClass* av_class = *(AVClass**)obj;
  85
  86         if((strcmp(name, "pix_fmt") == 0 || strcmp(name, "pixel_format") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)
  87         {
  88                 AVCodecContext* c = (AVCodecContext*)obj;
  89                 auto pix_fmt = av_get_pix_fmt(val);
  90                 if(pix_fmt == PIX_FMT_NONE)
  91                         return -1;
  92                 c->pix_fmt = pix_fmt;
  93                 return 0;
  94         }
  95         //if((strcmp(name, "r") == 0 || strcmp(name, "frame_rate") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)
  96         //{
  97         //      AVCodecContext* c = (AVCodecContext*)obj;
  98
  99         //      if(c->codec_type != AVMEDIA_TYPE_VIDEO)
 100         //              return -1;
 101
 102         //      AVRational rate;
 103         //      int ret = av_parse_video_rate(&rate, val);
 104         //      if(ret < 0)
 105         //              return ret;
 106
 107         //      c->time_base.num = rate.den;
 108         //      c->time_base.den = rate.num;
 109         //      return 0;
 110         //}
 111
 112         return ::av_opt_set(obj, name, val, search_flags);
 113 }
 114
 115 struct option
 116 {
 117         std::string name;
 118         std::string value;
 119
 120         option(std::string name, std::string value)
 121                 : name(std::move(name))
 122                 , value(std::move(value))
 123         {
 124         }
 125 };
 126
 127 struct output_format
 128 {
 129         AVOutputFormat* format;
 130         int                             width;
 131         int                             height;
 132         AVCodecID               vcodec;
 133         AVCodecID               acodec;
 134         int                             croptop;
 135         int                             cropbot;
 136
 137         output_format(const core::video_format_desc& format_desc, const std::string& filename, std::vector<option>& options)
 138                 : format(av_guess_format(nullptr, filename.c_str(), nullptr))
 139                 , width(format_desc.width)
 140                 , height(format_desc.height)
 141                 , vcodec(CODEC_ID_NONE)
 142                 , acodec(CODEC_ID_NONE)
 143                 , croptop(0)
 144                 , cropbot(0)
 145         {
 146                 if(boost::iequals(boost::filesystem::path(filename).extension().string(), ".dv"))
 147                         set_opt("f", "dv");
 148
 149                 boost::range::remove_erase_if(options, [&](const option& o)
 150                 {
 151                         return set_opt(o.name, o.value);
 152                 });
 153
 154                 if(vcodec == CODEC_ID_NONE && format)
 155                         vcodec = format->video_codec;
 156
 157                 if(acodec == CODEC_ID_NONE && format)
 158                         acodec = format->audio_codec;
 159
 160                 if(vcodec == CODEC_ID_NONE)
 161                         vcodec = CODEC_ID_H264;
 162
 163                 if(acodec == CODEC_ID_NONE)
 164                         acodec = CODEC_ID_PCM_S16LE;
 165         }
 166
 167         bool set_opt(const std::string& name, const std::string& value)
 168         {
 169                 //if(name == "target")
 170                 //{
 171                 //      enum { PAL, NTSC, FILM, UNKNOWN } norm = UNKNOWN;
 172                 //
 173                 //      if(name.find("pal-") != std::string::npos)
 174                 //              norm = PAL;
 175                 //      else if(name.find("ntsc-") != std::string::npos)
 176                 //              norm = NTSC;
 177
 178                 //      if(norm == UNKNOWN)
 179                 //              CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("target"));
 180                 //
 181                 //      if (name.find("-dv") != std::string::npos)
 182                 //      {
 183                 //              set_opt("f", "dv");
 184                 //              if(norm == PAL)
 185                 //              {
 186                 //                      set_opt("s", "720x576");
 187                 //              }
 188                 //              else
 189                 //              {
 190                 //                      set_opt("s", "720x480");
 191                 //                      if(height == 486)
 192                 //                      {
 193                 //                              set_opt("croptop", "2");
 194                 //                              set_opt("cropbot", "4");
 195                 //                      }
 196                 //              }
 197                 //              set_opt("s", norm == PAL ? "720x576" : "720x480");
 198                 //      }
 199
 200                 //      return true;
 201                 //}
 202                 //else
 203                 if(name == "f")
 204                 {
 205                         format = av_guess_format(value.c_str(), nullptr, nullptr);
 206
 207                         if(format == nullptr)
 208                                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("f"));
 209
 210                         return true;
 211                 }
 212                 else if(name == "vcodec" || name == "v:codec")
 213                 {
 214                         auto c = avcodec_find_encoder_by_name(value.c_str());
 215                         if(c == nullptr)
 216                                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("vcodec"));
 217
 218                         vcodec = avcodec_find_encoder_by_name(value.c_str())->id;
 219                         return true;
 220
 221                 }
 222                 else if(name == "acodec" || name == "a:codec")
 223                 {
 224                         auto c = avcodec_find_encoder_by_name(value.c_str());
 225                         if(c == nullptr)
 226                                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("acodec"));
 227
 228                         acodec = avcodec_find_encoder_by_name(value.c_str())->id;
 229
 230                         return true;
 231                 }
 232                 else if(name == "s")
 233                 {
 234                         if(av_parse_video_size(&width, &height, value.c_str()) < 0)
 235                                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("s"));
 236
 237                         return true;
 238                 }
 239                 else if(name == "croptop")
 240                 {
 241                         croptop = boost::lexical_cast<int>(value);
 242
 243                         return true;
 244                 }
 245                 else if(name == "cropbot")
 246                 {
 247                         cropbot = boost::lexical_cast<int>(value);
 248
 249                         return true;
 250                 }
 251
 252                 return false;
 253         }
 254 };
 255
 256 typedef cache_aligned_vector<uint8_t> byte_vector;
 257
 258 struct ffmpeg_consumer : boost::noncopyable
 259 {
 260         const spl::shared_ptr<diagnostics::graph>       graph_;
 261         const std::string                                                       filename_;
 262         const std::shared_ptr<AVFormatContext>          oc_                                     { avformat_alloc_context(), av_free };
 263         const core::video_format_desc                           format_desc_;
 264
 265         core::monitor::subject                                          monitor_subject_;
 266
 267         tbb::spin_mutex                                                         exception_mutex_;
 268         std::exception_ptr                                                      exception_;
 269
 270         std::shared_ptr<AVStream>                                       audio_st_;
 271         std::shared_ptr<AVStream>                                       video_st_;
 272
 273         byte_vector                                                                     picture_buffer_;
 274         byte_vector                                                                     key_picture_buf_;
 275         byte_vector                                                                     audio_buffer_;
 276         std::shared_ptr<SwrContext>                                     swr_;
 277         std::shared_ptr<SwsContext>                                     sws_;
 278
 279         int64_t                                                                         frame_number_           = 0;
 280
 281         output_format                                                           output_format_;
 282         bool                                                                            key_only_;
 283
 284         executor                                                                        executor_;
 285 public:
 286         ffmpeg_consumer(const std::string& filename, const core::video_format_desc& format_desc, std::vector<option> options, bool key_only)
 287                 : filename_(filename)
 288                 , format_desc_(format_desc)
 289                 , output_format_(format_desc, filename, options)
 290                 , key_only_(key_only)
 291                 , executor_(print())
 292         {
 293                 check_space();
 294
 295                 // TODO: Ask stakeholders about case where file already exists.
 296                 boost::filesystem::remove(boost::filesystem::path(env::media_folder() + u16(filename))); // Delete the file if it exists
 297
 298                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));
 299                 graph_->set_color("dropped-frame", diagnostics::color(0.3f, 0.6f, 0.3f));
 300                 graph_->set_text(print());
 301                 diagnostics::register_graph(graph_);
 302
 303                 executor_.set_capacity(8);
 304
 305                 oc_->oformat = output_format_.format;
 306
 307                 strcpy_s(oc_->filename, filename_.c_str());
 308
 309                 //  Add the audio and video streams using the default format codecs     and initialize the codecs.
 310                 video_st_ = add_video_stream(options);
 311
 312                 if (!key_only)
 313                         audio_st_ = add_audio_stream(options);
 314
 315                 av_dump_format(oc_.get(), 0, filename_.c_str(), 1);
 316
 317                 // Open the output ffmpeg, if needed.
 318                 if (!(oc_->oformat->flags & AVFMT_NOFILE))
 319                         THROW_ON_ERROR2(avio_open(&oc_->pb, filename.c_str(), AVIO_FLAG_WRITE), "[ffmpeg_consumer]");
 320
 321                 THROW_ON_ERROR2(avformat_write_header(oc_.get(), nullptr), "[ffmpeg_consumer]");
 322
 323                 if(options.size() > 0)
 324                 {
 325                         for (auto& option : options)
 326                                 CASPAR_LOG(warning) << L"Invalid option: -" << u16(option.name) << L" " << u16(option.value);
 327                 }
 328
 329                 CASPAR_LOG(info) << print() << L" Successfully Initialized.";
 330         }
 331
 332         ~ffmpeg_consumer()
 333         {
 334                 try
 335                 {
 336                         executor_.wait();
 337                 }
 338                 catch(...)
 339                 {
 340                         CASPAR_LOG_CURRENT_EXCEPTION();
 341                 }
 342
 343                 LOG_ON_ERROR2(av_write_trailer(oc_.get()), "[ffmpeg_consumer]");
 344
 345                 if (!key_only_)
 346                         audio_st_.reset();
 347
 348                 video_st_.reset();
 349
 350                 if (!(oc_->oformat->flags & AVFMT_NOFILE))
 351                         LOG_ON_ERROR2(avio_close(oc_->pb), "[ffmpeg_consumer]");
 352
 353                 CASPAR_LOG(info) << print() << L" Successfully Uninitialized.";
 354         }
 355
 356         // frame_consumer
 357
 358         void send(core::const_frame& frame)
 359         {
 360                 auto exception = lock(exception_mutex_, [&]
 361                 {
 362                         return exception_;
 363                 });
 364
 365                 if(exception != nullptr)
 366                         std::rethrow_exception(exception);
 367
 368                 executor_.begin_invoke([=]
 369                 {
 370                         encode(frame);
 371                 });
 372         }
 373
 374         bool ready_for_frame() const
 375         {
 376                 return !executor_.is_full();
 377         }
 378
 379         void mark_dropped()
 380         {
 381                 graph_->set_tag("dropped-frame");
 382         }
 383
 384         std::wstring print() const
 385         {
 386                 return L"ffmpeg[" + u16(filename_) + L"]";
 387         }
 388
 389         core::monitor::subject& monitor_output()
 390         {
 391                 return monitor_subject_;
 392         }
 393
 394 private:
 395         std::shared_ptr<AVStream> add_video_stream(std::vector<option>& options)
 396         {
 397                 if(output_format_.vcodec == CODEC_ID_NONE)
 398                         return nullptr;
 399
 400                 auto st = av_new_stream(oc_.get(), 0);
 401                 if (!st)
 402                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate video-stream.") << boost::errinfo_api_function("av_new_stream"));
 403
 404                 auto encoder = avcodec_find_encoder(output_format_.vcodec);
 405                 if (!encoder)
 406                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Codec not found."));
 407
 408                 auto c = st->codec;
 409
 410                 avcodec_get_context_defaults3(c, encoder);
 411
 412                 c->codec_id                     = output_format_.vcodec;
 413                 c->codec_type           = AVMEDIA_TYPE_VIDEO;
 414                 c->width                        = output_format_.width;
 415                 c->height                       = output_format_.height - output_format_.croptop - output_format_.cropbot;
 416                 c->time_base.den        = format_desc_.time_scale;
 417                 c->time_base.num        = format_desc_.duration;
 418                 c->gop_size                     = 25;
 419                 c->flags                   |= format_desc_.field_mode == core::field_mode::progressive ? 0 : (CODEC_FLAG_INTERLACED_ME | CODEC_FLAG_INTERLACED_DCT);
 420                 c->pix_fmt                      = c->pix_fmt != PIX_FMT_NONE ? c->pix_fmt : PIX_FMT_YUV420P;
 421
 422                 if(c->codec_id == CODEC_ID_PRORES)
 423                 {
 424                         c->bit_rate     = output_format_.width < 1280 ? 63*1000000 : 220*1000000;
 425                         c->pix_fmt      = PIX_FMT_YUV422P10;
 426                 }
 427                 else if(c->codec_id == CODEC_ID_DNXHD)
 428                 {
 429                         if(c->width < 1280 || c->height < 720)
 430                                 CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Unsupported video dimensions."));
 431
 432                         c->bit_rate     = 220*1000000;
 433                         c->pix_fmt      = PIX_FMT_YUV422P;
 434                 }
 435                 else if(c->codec_id == CODEC_ID_DVVIDEO)
 436                 {
 437                         c->width = c->height == 1280 ? 960  : c->width;
 438
 439                         if(format_desc_.format == core::video_format::ntsc)
 440                         {
 441                                 c->pix_fmt = PIX_FMT_YUV411P;
 442                                 output_format_.croptop = 2;
 443                                 output_format_.cropbot = 4;
 444                                 c->height                          = output_format_.height - output_format_.croptop - output_format_.cropbot;
 445                         }
 446                         else if(format_desc_.format == core::video_format::pal)
 447                                 c->pix_fmt = PIX_FMT_YUV420P;
 448                         else // dv50
 449                                 c->pix_fmt = PIX_FMT_YUV422P;
 450
 451                         if(format_desc_.duration == 1001)
 452                                 c->width = c->height == 1080 ? 1280 : c->width;
 453                         else
 454                                 c->width = c->height == 1080 ? 1440 : c->width;
 455                 }
 456                 else if(c->codec_id == CODEC_ID_H264)
 457                 {
 458                         c->pix_fmt = PIX_FMT_YUV420P;
 459                         av_opt_set(c->priv_data, "preset", "ultrafast", 0);
 460                         av_opt_set(c->priv_data, "tune",   "fastdecode",   0);
 461                         av_opt_set(c->priv_data, "crf",    "5",     0);
 462                 }
 463                 else if(c->codec_id == CODEC_ID_QTRLE)
 464                 {
 465                         c->pix_fmt = PIX_FMT_ARGB;
 466                 }
 467
 468                 boost::range::remove_erase_if(options, [&](const option& o)
 469                 {
 470                         return o.name.at(0) != 'a' && ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;
 471                 });
 472
 473                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)
 474                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 475
 476                 THROW_ON_ERROR2(tbb_avcodec_open(c, encoder), "[ffmpeg_consumer]");
 477
 478                 return std::shared_ptr<AVStream>(st, [](AVStream* st)
 479                 {
 480                         LOG_ON_ERROR2(tbb_avcodec_close(st->codec), "[ffmpeg_consumer]");
 481                         av_freep(&st->codec);
 482                         av_freep(&st);
 483                 });
 484         }
 485
 486         std::shared_ptr<AVStream> add_audio_stream(std::vector<option>& options)
 487         {
 488                 if(output_format_.acodec == CODEC_ID_NONE)
 489                         return nullptr;
 490
 491                 auto st = av_new_stream(oc_.get(), 1);
 492                 if(!st)
 493                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate audio-stream") << boost::errinfo_api_function("av_new_stream"));
 494
 495                 auto encoder = avcodec_find_encoder(output_format_.acodec);
 496                 if (!encoder)
 497                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));
 498
 499                 auto c = st->codec;
 500
 501                 avcodec_get_context_defaults3(c, encoder);
 502
 503                 c->codec_id                     = output_format_.acodec;
 504                 c->codec_type           = AVMEDIA_TYPE_AUDIO;
 505                 c->sample_rate          = 48000;
 506                 c->channels                     = 2;
 507                 c->sample_fmt           = AV_SAMPLE_FMT_S16;
 508                 c->time_base.num        = 1;
 509                 c->time_base.den        = c->sample_rate;
 510
 511                 if(output_format_.vcodec == CODEC_ID_FLV1)
 512                         c->sample_rate  = 44100;
 513
 514                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)
 515                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 516
 517                 boost::range::remove_erase_if(options, [&](const option& o)
 518                 {
 519                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;
 520                 });
 521
 522                 THROW_ON_ERROR2(avcodec_open2(c, encoder, nullptr), "[ffmpeg_consumer]");
 523
 524                 return std::shared_ptr<AVStream>(st, [](AVStream* st)
 525                 {
 526                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");;
 527                         av_freep(&st->codec);
 528                         av_freep(&st);
 529                 });
 530         }
 531
 532         void encode_video_frame(core::const_frame frame)
 533         {
 534                 if(!video_st_)
 535                         return;
 536
 537                 auto enc = video_st_->codec;
 538
 539                 auto av_frame                           = convert_video(frame, enc);
 540                 av_frame->interlaced_frame      = format_desc_.field_mode != core::field_mode::progressive;
 541                 av_frame->top_field_first       = format_desc_.field_mode == core::field_mode::upper;
 542                 av_frame->pts                           = frame_number_++;
 543
 544                 monitor_subject_ << core::monitor::message("/frame")
 545                                 % static_cast<int64_t>(frame_number_)
 546                                 % static_cast<int64_t>(std::numeric_limits<int64_t>::max());
 547
 548                 AVPacket pkt;
 549                 av_init_packet(&pkt);
 550                 pkt.data = nullptr;
 551                 pkt.size = 0;
 552
 553                 int got_packet = 0;
 554                 THROW_ON_ERROR2(avcodec_encode_video2(enc, &pkt, av_frame.get(), &got_packet), "[ffmpeg_consumer]");
 555                 std::shared_ptr<AVPacket> guard(&pkt, av_free_packet);
 556
 557                 if(!got_packet)
 558                         return;
 559
 560                 if (pkt.pts != AV_NOPTS_VALUE)
 561                         pkt.pts = av_rescale_q(pkt.pts, enc->time_base, video_st_->time_base);
 562                 if (pkt.dts != AV_NOPTS_VALUE)
 563                         pkt.dts = av_rescale_q(pkt.dts, enc->time_base, video_st_->time_base);
 564
 565                 pkt.stream_index = video_st_->index;
 566
 567                 THROW_ON_ERROR2(av_interleaved_write_frame(oc_.get(), &pkt), "[ffmpeg_consumer]");
 568         }
 569
 570         uint64_t get_channel_layout(AVCodecContext* dec)
 571         {
 572                 auto layout = (dec->channel_layout && dec->channels == av_get_channel_layout_nb_channels(dec->channel_layout)) ? dec->channel_layout : av_get_default_channel_layout(dec->channels);
 573                 return layout;
 574         }
 575
 576         void encode_audio_frame(core::const_frame frame)
 577         {
 578                 if(!audio_st_)
 579                         return;
 580
 581                 auto enc = audio_st_->codec;
 582
 583                 boost::push_back(audio_buffer_, convert_audio(frame, enc));
 584
 585                 auto frame_size = enc->frame_size != 0 ? enc->frame_size * enc->channels * av_get_bytes_per_sample(enc->sample_fmt) : static_cast<int>(audio_buffer_.size());
 586
 587                 while(audio_buffer_.size() >= frame_size)
 588                 {
 589                         std::shared_ptr<AVFrame> av_frame(avcodec_alloc_frame(), av_free);
 590                         avcodec_get_frame_defaults(av_frame.get());
 591                         av_frame->nb_samples = frame_size / (enc->channels * av_get_bytes_per_sample(enc->sample_fmt));
 592
 593                         AVPacket pkt;
 594                         av_init_packet(&pkt);
 595                         pkt.data = nullptr;
 596                         pkt.size = 0;
 597
 598                         THROW_ON_ERROR2(avcodec_fill_audio_frame(av_frame.get(), enc->channels, enc->sample_fmt, audio_buffer_.data(), frame_size, 1), "[ffmpeg_consumer]");
 599
 600                         int got_packet = 0;
 601                         THROW_ON_ERROR2(avcodec_encode_audio2(enc, &pkt, av_frame.get(), &got_packet), "[ffmpeg_consumer]");
 602                         std::shared_ptr<AVPacket> guard(&pkt, av_free_packet);
 603
 604                         audio_buffer_.erase(audio_buffer_.begin(), audio_buffer_.begin() + frame_size);
 605
 606                         if(!got_packet)
 607                                 return;
 608
 609                         if (pkt.pts != AV_NOPTS_VALUE)
 610                                 pkt.pts      = av_rescale_q(pkt.pts, enc->time_base, audio_st_->time_base);
 611                         if (pkt.dts != AV_NOPTS_VALUE)
 612                                 pkt.dts      = av_rescale_q(pkt.dts, enc->time_base, audio_st_->time_base);
 613                         if (pkt.duration > 0)
 614                                 pkt.duration = static_cast<int>(av_rescale_q(pkt.duration, enc->time_base, audio_st_->time_base));
 615
 616                         pkt.stream_index = audio_st_->index;
 617
 618                         THROW_ON_ERROR2(av_interleaved_write_frame(oc_.get(), &pkt), "[ffmpeg_consumer]");
 619                 }
 620         }
 621
 622         std::shared_ptr<AVFrame> convert_video(core::const_frame frame, AVCodecContext* c)
 623         {
 624                 if(!sws_)
 625                 {
 626                         sws_.reset(sws_getContext(format_desc_.width,
 627                                                                           format_desc_.height - output_format_.croptop  - output_format_.cropbot,
 628                                                                           PIX_FMT_BGRA,
 629                                                                           c->width,
 630                                                                           c->height,
 631                                                                           c->pix_fmt,
 632                                                                           SWS_BICUBIC, nullptr, nullptr, nullptr),
 633                                                 sws_freeContext);
 634                         if (sws_ == nullptr)
 635                                 CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Cannot initialize the conversion context"));
 636                 }
 637
 638                 // #in_frame
 639
 640                 std::shared_ptr<AVFrame> in_frame(avcodec_alloc_frame(), av_free);
 641
 642                 auto in_picture = reinterpret_cast<AVPicture*>(in_frame.get());
 643
 644                 if (key_only_)
 645                 {
 646                         key_picture_buf_.resize(frame.image_data().size());
 647                         in_picture->linesize[0] = format_desc_.width * 4;
 648                         in_picture->data[0] = key_picture_buf_.data();
 649
 650                         aligned_memshfl(in_picture->data[0], frame.image_data().begin(), frame.image_data().size(), 0x0F0F0F0F, 0x0B0B0B0B, 0x07070707, 0x03030303);
 651                 }
 652                 else
 653                 {
 654                         avpicture_fill(
 655                                         in_picture,
 656                                         const_cast<uint8_t*>(frame.image_data().begin()),
 657                                         PIX_FMT_BGRA,
 658                                         format_desc_.width,
 659                                         format_desc_.height - output_format_.croptop  - output_format_.cropbot);
 660                 }
 661
 662                 // crop-top
 663
 664                 for(int n = 0; n < 4; ++n)
 665                         in_frame->data[n] += in_frame->linesize[n] * output_format_.croptop;
 666
 667                 // #out_frame
 668
 669                 std::shared_ptr<AVFrame> out_frame(avcodec_alloc_frame(), av_free);
 670
 671                 av_image_fill_linesizes(out_frame->linesize, c->pix_fmt, c->width);
 672                 for(int n = 0; n < 4; ++n)
 673                         out_frame->linesize[n] += 32 - (out_frame->linesize[n] % 32); // align
 674
 675                 picture_buffer_.resize(av_image_fill_pointers(out_frame->data, c->pix_fmt, c->height, nullptr, out_frame->linesize));
 676                 av_image_fill_pointers(out_frame->data, c->pix_fmt, c->height, picture_buffer_.data(), out_frame->linesize);
 677
 678                 // #scale
 679
 680                 sws_scale(sws_.get(),
 681                                   in_frame->data,
 682                                   in_frame->linesize,
 683                                   0,
 684                                   format_desc_.height - output_format_.cropbot - output_format_.croptop,
 685                                   out_frame->data,
 686                                   out_frame->linesize);
 687
 688                 return out_frame;
 689         }
 690
 691         byte_vector convert_audio(core::const_frame& frame, AVCodecContext* c)
 692         {
 693                 if(!swr_)
 694                 {
 695                         swr_ = std::shared_ptr<SwrContext>(swr_alloc_set_opts(nullptr,
 696                                                                                 get_channel_layout(c), c->sample_fmt, c->sample_rate,
 697                                                                                 av_get_default_channel_layout(format_desc_.audio_channels), AV_SAMPLE_FMT_S32, format_desc_.audio_sample_rate,
 698                                                                                 0, nullptr), [](SwrContext* p){swr_free(&p);});
 699
 700                         if(!swr_)
 701                                 CASPAR_THROW_EXCEPTION(bad_alloc());
 702
 703                         THROW_ON_ERROR2(swr_init(swr_.get()), "[audio_decoder]");
 704                 }
 705
 706                 byte_vector buffer(48000);
 707
 708                 const uint8_t* in[]  = {reinterpret_cast<const uint8_t*>(frame.audio_data().data())};
 709                 uint8_t*       out[] = {buffer.data()};
 710
 711                 auto channel_samples = swr_convert(swr_.get(),
 712                                                                                    out, static_cast<int>(buffer.size()) / c->channels / av_get_bytes_per_sample(c->sample_fmt),
 713                                                                                    in, static_cast<int>(frame.audio_data().size()/format_desc_.audio_channels));
 714
 715                 buffer.resize(channel_samples * c->channels * av_get_bytes_per_sample(c->sample_fmt));
 716
 717                 return buffer;
 718         }
 719
 720         void check_space()
 721         {
 722                 auto space = boost::filesystem::space(boost::filesystem::path(filename_).parent_path());
 723                 if(space.available < 512*1000000)
 724                         BOOST_THROW_EXCEPTION(file_write_error() << msg_info("out of space"));
 725         }
 726
 727         void encode(const core::const_frame& frame)
 728         {
 729                 try
 730                 {
 731                         if(frame_number_ % 25 == 0)
 732                                 check_space();
 733
 734                         boost::timer frame_timer;
 735
 736                         encode_video_frame(frame);
 737                         encode_audio_frame(frame);
 738
 739                         graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);
 740                 }
 741                 catch(...)
 742                 {
 743                         lock(exception_mutex_, [&]
 744                         {
 745                                 exception_ = std::current_exception();
 746                         });
 747                 }
 748         }
 749 };
 750
 751 struct ffmpeg_consumer_proxy : public core::frame_consumer
 752 {
 753         const std::wstring                      filename_;
 754         const std::vector<option>       options_;
 755         const bool                                      separate_key_;
 756
 757         std::unique_ptr<ffmpeg_consumer> consumer_;
 758         std::unique_ptr<ffmpeg_consumer> key_only_consumer_;
 759
 760 public:
 761
 762         ffmpeg_consumer_proxy(const std::wstring& filename, const std::vector<option>& options, bool separate_key)
 763                 : filename_(filename)
 764                 , options_(options)
 765                 , separate_key_(separate_key_)
 766         {
 767         }
 768
 769         virtual void initialize(const core::video_format_desc& format_desc, int)
 770         {
 771                 if(consumer_)
 772                         BOOST_THROW_EXCEPTION(invalid_operation() << msg_info("Cannot reinitialize ffmpeg-consumer."));
 773
 774                 consumer_.reset(new ffmpeg_consumer(u8(filename_), format_desc, options_, false));
 775
 776                 if (separate_key_)
 777                 {
 778                         boost::filesystem::wpath fill_file(filename_);
 779                         auto without_extension = u16(fill_file.stem().string());
 780                         auto key_file = env::media_folder() + without_extension + L"_A" + u16(fill_file.extension().string());
 781
 782                         key_only_consumer_.reset(new ffmpeg_consumer(u8(key_file), format_desc, options_, true));
 783                 }
 784         }
 785
 786         std::future<bool> send(core::const_frame frame) override
 787         {
 788                 bool ready_for_frame = consumer_->ready_for_frame();
 789
 790                 if (ready_for_frame && separate_key_)
 791                         ready_for_frame = ready_for_frame && key_only_consumer_->ready_for_frame();
 792
 793                 if (ready_for_frame)
 794                 {
 795                         consumer_->send(frame);
 796
 797                         if (separate_key_)
 798                                 key_only_consumer_->send(frame);
 799                 }
 800                 else
 801                 {
 802                         consumer_->mark_dropped();
 803
 804                         if (separate_key_)
 805                                 key_only_consumer_->mark_dropped();
 806                 }
 807
 808                 return make_ready_future(true);
 809         }
 810
 811         std::wstring print() const override
 812         {
 813                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";
 814         }
 815
 816         std::wstring name() const override
 817         {
 818                 return L"file";
 819         }
 820
 821         boost::property_tree::wptree info() const override
 822         {
 823                 boost::property_tree::wptree info;
 824                 info.add(L"type", L"file");
 825                 info.add(L"filename", filename_);
 826                 info.add(L"separate_key", separate_key_);
 827                 return info;
 828         }
 829
 830         bool has_synchronization_clock() const override
 831         {
 832                 return false;
 833         }
 834
 835         int buffer_depth() const override
 836         {
 837                 return 1;
 838         }
 839
 840         int index() const override
 841         {
 842                 return 200;
 843         }
 844
 845         core::monitor::subject& monitor_output()
 846         {
 847                 return consumer_->monitor_output();
 848         }
 849 };
 850 spl::shared_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)
 851 {
 852         auto params2 = params;
 853         auto separate_key_it = std::find(params2.begin(), params2.end(), L"SEPARATE_KEY");
 854         bool separate_key = false;
 855
 856         if (separate_key_it != params2.end())
 857         {
 858                 separate_key = true;
 859                 params2.erase(separate_key_it);
 860         }
 861
 862         auto str = std::accumulate(params2.begin(), params2.end(), std::wstring(), [](const std::wstring& lhs, const std::wstring& rhs) {return lhs + L" " + rhs;});
 863
 864         boost::wregex path_exp(LR"(\s*FILE(\s(?<PATH>.+\.[^\s]+))?.*)", boost::regex::icase);
 865
 866         boost::wsmatch path;
 867         if(!boost::regex_match(str, path, path_exp))
 868                 return core::frame_consumer::empty();
 869
 870         boost::wregex opt_exp(LR"(-((?<NAME>[^\s]+)\s+(?<VALUE>[^\s]+)))");
 871
 872         std::vector<option> options;
 873         for(boost::wsregex_iterator it(str.begin(), str.end(), opt_exp); it != boost::wsregex_iterator(); ++it)
 874         {
 875                 auto name  = u8(boost::trim_copy(boost::to_lower_copy((*it)["NAME"].str())));
 876                 auto value = u8(boost::trim_copy(boost::to_lower_copy((*it)["VALUE"].str())));
 877
 878                 if(value == "h264")
 879                         value = "libx264";
 880                 else if(value == "dvcpro")
 881                         value = "dvvideo";
 882
 883                 options.push_back(option(name, value));
 884         }
 885
 886         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + path["PATH"].str(), options, separate_key);
 887 }
 888
 889 spl::shared_ptr<core::frame_consumer> create_consumer(const boost::property_tree::wptree& ptree)
 890 {
 891         auto filename           = ptree.get<std::wstring>(L"path");
 892         auto codec                      = ptree.get(L"vcodec", L"libx264");
 893         auto separate_key       = ptree.get(L"separate-key", false);
 894
 895         std::vector<option> options;
 896         options.push_back(option("vcodec", u8(codec)));
 897
 898         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + filename, options, separate_key);
 899 }
 900
 901 }}