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 #include <cstring>
  60
  61 #if defined(_MSC_VER)
  62 #pragma warning (push)
  63 #pragma warning (disable : 4244)
  64 #endif
  65 extern "C"
  66 {
  67         #define __STDC_CONSTANT_MACROS
  68         #define __STDC_LIMIT_MACROS
  69         #include <libavformat/avformat.h>
  70         #include <libswscale/swscale.h>
  71         #include <libavutil/opt.h>
  72         #include <libavutil/pixdesc.h>
  73         #include <libavutil/parseutils.h>
  74         #include <libavutil/samplefmt.h>
  75         #include <libswresample/swresample.h>
  76 }
  77 #if defined(_MSC_VER)
  78 #pragma warning (pop)
  79 #endif
  80
  81 namespace caspar { namespace ffmpeg {
  82
  83 int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
  84 {
  85         AVClass* av_class = *(AVClass**)obj;
  86
  87         if((strcmp(name, "pix_fmt") == 0 || strcmp(name, "pixel_format") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)
  88         {
  89                 AVCodecContext* c = (AVCodecContext*)obj;
  90                 auto pix_fmt = av_get_pix_fmt(val);
  91                 if(pix_fmt == PIX_FMT_NONE)
  92                         return -1;
  93                 c->pix_fmt = pix_fmt;
  94                 return 0;
  95         }
  96         //if((strcmp(name, "r") == 0 || strcmp(name, "frame_rate") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)
  97         //{
  98         //      AVCodecContext* c = (AVCodecContext*)obj;
  99
 100         //      if(c->codec_type != AVMEDIA_TYPE_VIDEO)
 101         //              return -1;
 102
 103         //      AVRational rate;
 104         //      int ret = av_parse_video_rate(&rate, val);
 105         //      if(ret < 0)
 106         //              return ret;
 107
 108         //      c->time_base.num = rate.den;
 109         //      c->time_base.den = rate.num;
 110         //      return 0;
 111         //}
 112
 113         return ::av_opt_set(obj, name, val, search_flags);
 114 }
 115
 116 struct option
 117 {
 118         std::string name;
 119         std::string value;
 120
 121         option(std::string name, std::string value)
 122                 : name(std::move(name))
 123                 , value(std::move(value))
 124         {
 125         }
 126 };
 127
 128 struct output_format
 129 {
 130         AVOutputFormat* format;
 131         int                             width;
 132         int                             height;
 133         AVCodecID               vcodec;
 134         AVCodecID               acodec;
 135         int                             croptop;
 136         int                             cropbot;
 137
 138         output_format(const core::video_format_desc& format_desc, const std::string& filename, std::vector<option>& options)
 139                 : format(av_guess_format(nullptr, filename.c_str(), nullptr))
 140                 , width(format_desc.width)
 141                 , height(format_desc.height)
 142                 , vcodec(CODEC_ID_NONE)
 143                 , acodec(CODEC_ID_NONE)
 144                 , croptop(0)
 145                 , cropbot(0)
 146         {
 147                 if(boost::iequals(boost::filesystem::path(filename).extension().string(), ".dv"))
 148                         set_opt("f", "dv");
 149
 150                 boost::range::remove_erase_if(options, [&](const option& o)
 151                 {
 152                         return set_opt(o.name, o.value);
 153                 });
 154
 155                 if(vcodec == CODEC_ID_NONE && format)
 156                         vcodec = format->video_codec;
 157
 158                 if(acodec == CODEC_ID_NONE && format)
 159                         acodec = format->audio_codec;
 160
 161                 if(vcodec == CODEC_ID_NONE)
 162                         vcodec = CODEC_ID_H264;
 163
 164                 if(acodec == CODEC_ID_NONE)
 165                         acodec = CODEC_ID_PCM_S16LE;
 166         }
 167
 168         bool set_opt(const std::string& name, const std::string& value)
 169         {
 170                 //if(name == "target")
 171                 //{
 172                 //      enum { PAL, NTSC, FILM, UNKNOWN } norm = UNKNOWN;
 173                 //
 174                 //      if(name.find("pal-") != std::string::npos)
 175                 //              norm = PAL;
 176                 //      else if(name.find("ntsc-") != std::string::npos)
 177                 //              norm = NTSC;
 178
 179                 //      if(norm == UNKNOWN)
 180                 //              CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("target"));
 181                 //
 182                 //      if (name.find("-dv") != std::string::npos)
 183                 //      {
 184                 //              set_opt("f", "dv");
 185                 //              if(norm == PAL)
 186                 //              {
 187                 //                      set_opt("s", "720x576");
 188                 //              }
 189                 //              else
 190                 //              {
 191                 //                      set_opt("s", "720x480");
 192                 //                      if(height == 486)
 193                 //                      {
 194                 //                              set_opt("croptop", "2");
 195                 //                              set_opt("cropbot", "4");
 196                 //                      }
 197                 //              }
 198                 //              set_opt("s", norm == PAL ? "720x576" : "720x480");
 199                 //      }
 200
 201                 //      return true;
 202                 //}
 203                 //else
 204                 if(name == "f")
 205                 {
 206                         format = av_guess_format(value.c_str(), nullptr, nullptr);
 207
 208                         if(format == nullptr)
 209                                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("f"));
 210
 211                         return true;
 212                 }
 213                 else if(name == "vcodec" || name == "v:codec")
 214                 {
 215                         auto c = avcodec_find_encoder_by_name(value.c_str());
 216                         if(c == nullptr)
 217                                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("vcodec"));
 218
 219                         vcodec = avcodec_find_encoder_by_name(value.c_str())->id;
 220                         return true;
 221
 222                 }
 223                 else if(name == "acodec" || name == "a:codec")
 224                 {
 225                         auto c = avcodec_find_encoder_by_name(value.c_str());
 226                         if(c == nullptr)
 227                                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("acodec"));
 228
 229                         acodec = avcodec_find_encoder_by_name(value.c_str())->id;
 230
 231                         return true;
 232                 }
 233                 else if(name == "s")
 234                 {
 235                         if(av_parse_video_size(&width, &height, value.c_str()) < 0)
 236                                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("s"));
 237
 238                         return true;
 239                 }
 240                 else if(name == "croptop")
 241                 {
 242                         croptop = boost::lexical_cast<int>(value);
 243
 244                         return true;
 245                 }
 246                 else if(name == "cropbot")
 247                 {
 248                         cropbot = boost::lexical_cast<int>(value);
 249
 250                         return true;
 251                 }
 252
 253                 return false;
 254         }
 255 };
 256
 257 typedef cache_aligned_vector<uint8_t> byte_vector;
 258
 259 struct ffmpeg_consumer : boost::noncopyable
 260 {
 261         const spl::shared_ptr<diagnostics::graph>       graph_;
 262         const std::string                                                       filename_;
 263         const std::shared_ptr<AVFormatContext>          oc_                                     { avformat_alloc_context(), av_free };
 264         const core::video_format_desc                           format_desc_;
 265
 266         core::monitor::subject                                          monitor_subject_;
 267
 268         tbb::spin_mutex                                                         exception_mutex_;
 269         std::exception_ptr                                                      exception_;
 270
 271         std::shared_ptr<AVStream>                                       audio_st_;
 272         std::shared_ptr<AVStream>                                       video_st_;
 273
 274         byte_vector                                                                     picture_buffer_;
 275         byte_vector                                                                     key_picture_buf_;
 276         byte_vector                                                                     audio_buffer_;
 277         std::shared_ptr<SwrContext>                                     swr_;
 278         std::shared_ptr<SwsContext>                                     sws_;
 279
 280         int64_t                                                                         frame_number_           = 0;
 281
 282         output_format                                                           output_format_;
 283         bool                                                                            key_only_;
 284
 285         executor                                                                        executor_;
 286 public:
 287         ffmpeg_consumer(const std::string& filename, const core::video_format_desc& format_desc, std::vector<option> options, bool key_only)
 288                 : filename_(filename)
 289                 , format_desc_(format_desc)
 290                 , output_format_(format_desc, filename, options)
 291                 , key_only_(key_only)
 292                 , executor_(print())
 293         {
 294                 check_space();
 295
 296                 // TODO: Ask stakeholders about case where file already exists.
 297                 boost::filesystem::remove(boost::filesystem::path(env::media_folder() + u16(filename))); // Delete the file if it exists
 298
 299                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));
 300                 graph_->set_color("dropped-frame", diagnostics::color(0.3f, 0.6f, 0.3f));
 301                 graph_->set_text(print());
 302                 diagnostics::register_graph(graph_);
 303
 304                 executor_.set_capacity(8);
 305
 306                 oc_->oformat = output_format_.format;
 307
 308                 std::strcpy(oc_->filename, filename_.c_str());
 309
 310                 //  Add the audio and video streams using the default format codecs     and initialize the codecs.
 311                 video_st_ = add_video_stream(options);
 312
 313                 if (!key_only)
 314                         audio_st_ = add_audio_stream(options);
 315
 316                 av_dump_format(oc_.get(), 0, filename_.c_str(), 1);
 317
 318                 // Open the output ffmpeg, if needed.
 319                 if (!(oc_->oformat->flags & AVFMT_NOFILE))
 320                         THROW_ON_ERROR2(avio_open(&oc_->pb, filename.c_str(), AVIO_FLAG_WRITE), "[ffmpeg_consumer]");
 321
 322                 THROW_ON_ERROR2(avformat_write_header(oc_.get(), nullptr), "[ffmpeg_consumer]");
 323
 324                 if(options.size() > 0)
 325                 {
 326                         for (auto& option : options)
 327                                 CASPAR_LOG(warning) << L"Invalid option: -" << u16(option.name) << L" " << u16(option.value);
 328                 }
 329
 330                 CASPAR_LOG(info) << print() << L" Successfully Initialized.";
 331         }
 332
 333         ~ffmpeg_consumer()
 334         {
 335                 try
 336                 {
 337                         executor_.wait();
 338                 }
 339                 catch(...)
 340                 {
 341                         CASPAR_LOG_CURRENT_EXCEPTION();
 342                 }
 343
 344                 LOG_ON_ERROR2(av_write_trailer(oc_.get()), "[ffmpeg_consumer]");
 345
 346                 if (!key_only_)
 347                         audio_st_.reset();
 348
 349                 video_st_.reset();
 350
 351                 if (!(oc_->oformat->flags & AVFMT_NOFILE))
 352                         LOG_ON_ERROR2(avio_close(oc_->pb), "[ffmpeg_consumer]");
 353
 354                 CASPAR_LOG(info) << print() << L" Successfully Uninitialized.";
 355         }
 356
 357         // frame_consumer
 358
 359         void send(core::const_frame& frame)
 360         {
 361                 auto exception = lock(exception_mutex_, [&]
 362                 {
 363                         return exception_;
 364                 });
 365
 366                 if(exception != nullptr)
 367                         std::rethrow_exception(exception);
 368
 369                 executor_.begin_invoke([=]
 370                 {
 371                         encode(frame);
 372                 });
 373         }
 374
 375         bool ready_for_frame() const
 376         {
 377                 return !executor_.is_full();
 378         }
 379
 380         void mark_dropped()
 381         {
 382                 graph_->set_tag("dropped-frame");
 383         }
 384
 385         std::wstring print() const
 386         {
 387                 return L"ffmpeg[" + u16(filename_) + L"]";
 388         }
 389
 390         core::monitor::subject& monitor_output()
 391         {
 392                 return monitor_subject_;
 393         }
 394
 395 private:
 396         std::shared_ptr<AVStream> add_video_stream(std::vector<option>& options)
 397         {
 398                 if(output_format_.vcodec == CODEC_ID_NONE)
 399                         return nullptr;
 400
 401                 auto st = av_new_stream(oc_.get(), 0);
 402                 if (!st)
 403                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate video-stream.") << boost::errinfo_api_function("av_new_stream"));
 404
 405                 auto encoder = avcodec_find_encoder(output_format_.vcodec);
 406                 if (!encoder)
 407                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Codec not found."));
 408
 409                 auto c = st->codec;
 410
 411                 avcodec_get_context_defaults3(c, encoder);
 412
 413                 c->codec_id                     = output_format_.vcodec;
 414                 c->codec_type           = AVMEDIA_TYPE_VIDEO;
 415                 c->width                        = output_format_.width;
 416                 c->height                       = output_format_.height - output_format_.croptop - output_format_.cropbot;
 417                 c->time_base.den        = format_desc_.time_scale;
 418                 c->time_base.num        = format_desc_.duration;
 419                 c->gop_size                     = 25;
 420                 c->flags                   |= format_desc_.field_mode == core::field_mode::progressive ? 0 : (CODEC_FLAG_INTERLACED_ME | CODEC_FLAG_INTERLACED_DCT);
 421                 c->pix_fmt                      = c->pix_fmt != PIX_FMT_NONE ? c->pix_fmt : PIX_FMT_YUV420P;
 422
 423                 if(c->codec_id == CODEC_ID_PRORES)
 424                 {
 425                         c->bit_rate     = output_format_.width < 1280 ? 63*1000000 : 220*1000000;
 426                         c->pix_fmt      = PIX_FMT_YUV422P10;
 427                 }
 428                 else if(c->codec_id == CODEC_ID_DNXHD)
 429                 {
 430                         if(c->width < 1280 || c->height < 720)
 431                                 CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Unsupported video dimensions."));
 432
 433                         c->bit_rate     = 220*1000000;
 434                         c->pix_fmt      = PIX_FMT_YUV422P;
 435                 }
 436                 else if(c->codec_id == CODEC_ID_DVVIDEO)
 437                 {
 438                         c->width = c->height == 1280 ? 960  : c->width;
 439
 440                         if(format_desc_.format == core::video_format::ntsc)
 441                         {
 442                                 c->pix_fmt = PIX_FMT_YUV411P;
 443                                 output_format_.croptop = 2;
 444                                 output_format_.cropbot = 4;
 445                                 c->height                          = output_format_.height - output_format_.croptop - output_format_.cropbot;
 446                         }
 447                         else if(format_desc_.format == core::video_format::pal)
 448                                 c->pix_fmt = PIX_FMT_YUV420P;
 449                         else // dv50
 450                                 c->pix_fmt = PIX_FMT_YUV422P;
 451
 452                         if(format_desc_.duration == 1001)
 453                                 c->width = c->height == 1080 ? 1280 : c->width;
 454                         else
 455                                 c->width = c->height == 1080 ? 1440 : c->width;
 456                 }
 457                 else if(c->codec_id == CODEC_ID_H264)
 458                 {
 459                         c->pix_fmt = PIX_FMT_YUV420P;
 460                         av_opt_set(c->priv_data, "preset", "ultrafast", 0);
 461                         av_opt_set(c->priv_data, "tune",   "fastdecode",   0);
 462                         av_opt_set(c->priv_data, "crf",    "5",     0);
 463                 }
 464                 else if(c->codec_id == CODEC_ID_QTRLE)
 465                 {
 466                         c->pix_fmt = PIX_FMT_ARGB;
 467                 }
 468
 469                 boost::range::remove_erase_if(options, [&](const option& o)
 470                 {
 471                         return o.name.at(0) != 'a' && ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;
 472                 });
 473
 474                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)
 475                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 476
 477                 THROW_ON_ERROR2(tbb_avcodec_open(c, encoder), "[ffmpeg_consumer]");
 478
 479                 return std::shared_ptr<AVStream>(st, [](AVStream* st)
 480                 {
 481                         LOG_ON_ERROR2(tbb_avcodec_close(st->codec), "[ffmpeg_consumer]");
 482                         av_freep(&st->codec);
 483                         av_freep(&st);
 484                 });
 485         }
 486
 487         std::shared_ptr<AVStream> add_audio_stream(std::vector<option>& options)
 488         {
 489                 if(output_format_.acodec == CODEC_ID_NONE)
 490                         return nullptr;
 491
 492                 auto st = av_new_stream(oc_.get(), 1);
 493                 if(!st)
 494                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate audio-stream") << boost::errinfo_api_function("av_new_stream"));
 495
 496                 auto encoder = avcodec_find_encoder(output_format_.acodec);
 497                 if (!encoder)
 498                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));
 499
 500                 auto c = st->codec;
 501
 502                 avcodec_get_context_defaults3(c, encoder);
 503
 504                 c->codec_id                     = output_format_.acodec;
 505                 c->codec_type           = AVMEDIA_TYPE_AUDIO;
 506                 c->sample_rate          = 48000;
 507                 c->channels                     = 2;
 508                 c->sample_fmt           = AV_SAMPLE_FMT_S16;
 509                 c->time_base.num        = 1;
 510                 c->time_base.den        = c->sample_rate;
 511
 512                 if(output_format_.vcodec == CODEC_ID_FLV1)
 513                         c->sample_rate  = 44100;
 514
 515                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)
 516                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 517
 518                 boost::range::remove_erase_if(options, [&](const option& o)
 519                 {
 520                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;
 521                 });
 522
 523                 THROW_ON_ERROR2(avcodec_open2(c, encoder, nullptr), "[ffmpeg_consumer]");
 524
 525                 return std::shared_ptr<AVStream>(st, [](AVStream* st)
 526                 {
 527                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");;
 528                         av_freep(&st->codec);
 529                         av_freep(&st);
 530                 });
 531         }
 532
 533         void encode_video_frame(core::const_frame frame)
 534         {
 535                 if(!video_st_)
 536                         return;
 537
 538                 auto enc = video_st_->codec;
 539
 540                 auto av_frame                           = convert_video(frame, enc);
 541                 av_frame->interlaced_frame      = format_desc_.field_mode != core::field_mode::progressive;
 542                 av_frame->top_field_first       = format_desc_.field_mode == core::field_mode::upper;
 543                 av_frame->pts                           = frame_number_++;
 544
 545                 monitor_subject_ << core::monitor::message("/frame")
 546                                 % static_cast<int64_t>(frame_number_)
 547                                 % static_cast<int64_t>(std::numeric_limits<int64_t>::max());
 548
 549                 AVPacket pkt;
 550                 av_init_packet(&pkt);
 551                 pkt.data = nullptr;
 552                 pkt.size = 0;
 553
 554                 int got_packet = 0;
 555                 THROW_ON_ERROR2(avcodec_encode_video2(enc, &pkt, av_frame.get(), &got_packet), "[ffmpeg_consumer]");
 556                 std::shared_ptr<AVPacket> guard(&pkt, av_free_packet);
 557
 558                 if(!got_packet)
 559                         return;
 560
 561                 if (pkt.pts != AV_NOPTS_VALUE)
 562                         pkt.pts = av_rescale_q(pkt.pts, enc->time_base, video_st_->time_base);
 563                 if (pkt.dts != AV_NOPTS_VALUE)
 564                         pkt.dts = av_rescale_q(pkt.dts, enc->time_base, video_st_->time_base);
 565
 566                 pkt.stream_index = video_st_->index;
 567
 568                 THROW_ON_ERROR2(av_interleaved_write_frame(oc_.get(), &pkt), "[ffmpeg_consumer]");
 569         }
 570
 571         uint64_t get_channel_layout(AVCodecContext* dec)
 572         {
 573                 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);
 574                 return layout;
 575         }
 576
 577         void encode_audio_frame(core::const_frame frame)
 578         {
 579                 if(!audio_st_)
 580                         return;
 581
 582                 auto enc = audio_st_->codec;
 583
 584                 boost::push_back(audio_buffer_, convert_audio(frame, enc));
 585
 586                 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());
 587
 588                 while(audio_buffer_.size() >= frame_size)
 589                 {
 590                         std::shared_ptr<AVFrame> av_frame(avcodec_alloc_frame(), av_free);
 591                         avcodec_get_frame_defaults(av_frame.get());
 592                         av_frame->nb_samples = frame_size / (enc->channels * av_get_bytes_per_sample(enc->sample_fmt));
 593
 594                         AVPacket pkt;
 595                         av_init_packet(&pkt);
 596                         pkt.data = nullptr;
 597                         pkt.size = 0;
 598
 599                         THROW_ON_ERROR2(avcodec_fill_audio_frame(av_frame.get(), enc->channels, enc->sample_fmt, audio_buffer_.data(), frame_size, 1), "[ffmpeg_consumer]");
 600
 601                         int got_packet = 0;
 602                         THROW_ON_ERROR2(avcodec_encode_audio2(enc, &pkt, av_frame.get(), &got_packet), "[ffmpeg_consumer]");
 603                         std::shared_ptr<AVPacket> guard(&pkt, av_free_packet);
 604
 605                         audio_buffer_.erase(audio_buffer_.begin(), audio_buffer_.begin() + frame_size);
 606
 607                         if(!got_packet)
 608                                 return;
 609
 610                         if (pkt.pts != AV_NOPTS_VALUE)
 611                                 pkt.pts      = av_rescale_q(pkt.pts, enc->time_base, audio_st_->time_base);
 612                         if (pkt.dts != AV_NOPTS_VALUE)
 613                                 pkt.dts      = av_rescale_q(pkt.dts, enc->time_base, audio_st_->time_base);
 614                         if (pkt.duration > 0)
 615                                 pkt.duration = static_cast<int>(av_rescale_q(pkt.duration, enc->time_base, audio_st_->time_base));
 616
 617                         pkt.stream_index = audio_st_->index;
 618
 619                         THROW_ON_ERROR2(av_interleaved_write_frame(oc_.get(), &pkt), "[ffmpeg_consumer]");
 620                 }
 621         }
 622
 623         std::shared_ptr<AVFrame> convert_video(core::const_frame frame, AVCodecContext* c)
 624         {
 625                 if(!sws_)
 626                 {
 627                         sws_.reset(sws_getContext(format_desc_.width,
 628                                                                           format_desc_.height - output_format_.croptop  - output_format_.cropbot,
 629                                                                           PIX_FMT_BGRA,
 630                                                                           c->width,
 631                                                                           c->height,
 632                                                                           c->pix_fmt,
 633                                                                           SWS_BICUBIC, nullptr, nullptr, nullptr),
 634                                                 sws_freeContext);
 635                         if (sws_ == nullptr)
 636                                 CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Cannot initialize the conversion context"));
 637                 }
 638
 639                 // #in_frame
 640
 641                 std::shared_ptr<AVFrame> in_frame(avcodec_alloc_frame(), av_free);
 642
 643                 auto in_picture = reinterpret_cast<AVPicture*>(in_frame.get());
 644
 645                 if (key_only_)
 646                 {
 647                         key_picture_buf_.resize(frame.image_data().size());
 648                         in_picture->linesize[0] = format_desc_.width * 4;
 649                         in_picture->data[0] = key_picture_buf_.data();
 650
 651                         aligned_memshfl(in_picture->data[0], frame.image_data().begin(), frame.image_data().size(), 0x0F0F0F0F, 0x0B0B0B0B, 0x07070707, 0x03030303);
 652                 }
 653                 else
 654                 {
 655                         avpicture_fill(
 656                                         in_picture,
 657                                         const_cast<uint8_t*>(frame.image_data().begin()),
 658                                         PIX_FMT_BGRA,
 659                                         format_desc_.width,
 660                                         format_desc_.height - output_format_.croptop  - output_format_.cropbot);
 661                 }
 662
 663                 // crop-top
 664
 665                 for(int n = 0; n < 4; ++n)
 666                         in_frame->data[n] += in_frame->linesize[n] * output_format_.croptop;
 667
 668                 // #out_frame
 669
 670                 std::shared_ptr<AVFrame> out_frame(avcodec_alloc_frame(), av_free);
 671
 672                 av_image_fill_linesizes(out_frame->linesize, c->pix_fmt, c->width);
 673                 for(int n = 0; n < 4; ++n)
 674                         out_frame->linesize[n] += 32 - (out_frame->linesize[n] % 32); // align
 675
 676                 picture_buffer_.resize(av_image_fill_pointers(out_frame->data, c->pix_fmt, c->height, nullptr, out_frame->linesize));
 677                 av_image_fill_pointers(out_frame->data, c->pix_fmt, c->height, picture_buffer_.data(), out_frame->linesize);
 678
 679                 // #scale
 680
 681                 sws_scale(sws_.get(),
 682                                   in_frame->data,
 683                                   in_frame->linesize,
 684                                   0,
 685                                   format_desc_.height - output_format_.cropbot - output_format_.croptop,
 686                                   out_frame->data,
 687                                   out_frame->linesize);
 688
 689                 return out_frame;
 690         }
 691
 692         byte_vector convert_audio(core::const_frame& frame, AVCodecContext* c)
 693         {
 694                 if(!swr_)
 695                 {
 696                         swr_ = std::shared_ptr<SwrContext>(swr_alloc_set_opts(nullptr,
 697                                                                                 get_channel_layout(c), c->sample_fmt, c->sample_rate,
 698                                                                                 av_get_default_channel_layout(format_desc_.audio_channels), AV_SAMPLE_FMT_S32, format_desc_.audio_sample_rate,
 699                                                                                 0, nullptr), [](SwrContext* p){swr_free(&p);});
 700
 701                         if(!swr_)
 702                                 CASPAR_THROW_EXCEPTION(bad_alloc());
 703
 704                         THROW_ON_ERROR2(swr_init(swr_.get()), "[audio_decoder]");
 705                 }
 706
 707                 byte_vector buffer(48000);
 708
 709                 const uint8_t* in[]  = {reinterpret_cast<const uint8_t*>(frame.audio_data().data())};
 710                 uint8_t*       out[] = {buffer.data()};
 711
 712                 auto channel_samples = swr_convert(swr_.get(),
 713                                                                                    out, static_cast<int>(buffer.size()) / c->channels / av_get_bytes_per_sample(c->sample_fmt),
 714                                                                                    in, static_cast<int>(frame.audio_data().size()/format_desc_.audio_channels));
 715
 716                 buffer.resize(channel_samples * c->channels * av_get_bytes_per_sample(c->sample_fmt));
 717
 718                 return buffer;
 719         }
 720
 721         void check_space()
 722         {
 723                 auto space = boost::filesystem::space(boost::filesystem::path(filename_).parent_path());
 724                 if(space.available < 512*1000000)
 725                         BOOST_THROW_EXCEPTION(file_write_error() << msg_info("out of space"));
 726         }
 727
 728         void encode(const core::const_frame& frame)
 729         {
 730                 try
 731                 {
 732                         if(frame_number_ % 25 == 0)
 733                                 check_space();
 734
 735                         boost::timer frame_timer;
 736
 737                         encode_video_frame(frame);
 738                         encode_audio_frame(frame);
 739
 740                         graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);
 741                 }
 742                 catch(...)
 743                 {
 744                         lock(exception_mutex_, [&]
 745                         {
 746                                 exception_ = std::current_exception();
 747                         });
 748                 }
 749         }
 750 };
 751
 752 struct ffmpeg_consumer_proxy : public core::frame_consumer
 753 {
 754         const std::wstring                      filename_;
 755         const std::vector<option>       options_;
 756         const bool                                      separate_key_;
 757
 758         std::unique_ptr<ffmpeg_consumer> consumer_;
 759         std::unique_ptr<ffmpeg_consumer> key_only_consumer_;
 760
 761 public:
 762
 763         ffmpeg_consumer_proxy(const std::wstring& filename, const std::vector<option>& options, bool separate_key)
 764                 : filename_(filename)
 765                 , options_(options)
 766                 , separate_key_(separate_key_)
 767         {
 768         }
 769
 770         virtual void initialize(const core::video_format_desc& format_desc, int)
 771         {
 772                 if(consumer_)
 773                         BOOST_THROW_EXCEPTION(invalid_operation() << msg_info("Cannot reinitialize ffmpeg-consumer."));
 774
 775                 consumer_.reset(new ffmpeg_consumer(u8(filename_), format_desc, options_, false));
 776
 777                 if (separate_key_)
 778                 {
 779                         boost::filesystem::wpath fill_file(filename_);
 780                         auto without_extension = u16(fill_file.stem().string());
 781                         auto key_file = env::media_folder() + without_extension + L"_A" + u16(fill_file.extension().string());
 782
 783                         key_only_consumer_.reset(new ffmpeg_consumer(u8(key_file), format_desc, options_, true));
 784                 }
 785         }
 786
 787         std::future<bool> send(core::const_frame frame) override
 788         {
 789                 bool ready_for_frame = consumer_->ready_for_frame();
 790
 791                 if (ready_for_frame && separate_key_)
 792                         ready_for_frame = ready_for_frame && key_only_consumer_->ready_for_frame();
 793
 794                 if (ready_for_frame)
 795                 {
 796                         consumer_->send(frame);
 797
 798                         if (separate_key_)
 799                                 key_only_consumer_->send(frame);
 800                 }
 801                 else
 802                 {
 803                         consumer_->mark_dropped();
 804
 805                         if (separate_key_)
 806                                 key_only_consumer_->mark_dropped();
 807                 }
 808
 809                 return make_ready_future(true);
 810         }
 811
 812         std::wstring print() const override
 813         {
 814                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";
 815         }
 816
 817         std::wstring name() const override
 818         {
 819                 return L"file";
 820         }
 821
 822         boost::property_tree::wptree info() const override
 823         {
 824                 boost::property_tree::wptree info;
 825                 info.add(L"type", L"file");
 826                 info.add(L"filename", filename_);
 827                 info.add(L"separate_key", separate_key_);
 828                 return info;
 829         }
 830
 831         bool has_synchronization_clock() const override
 832         {
 833                 return false;
 834         }
 835
 836         int buffer_depth() const override
 837         {
 838                 return 1;
 839         }
 840
 841         int index() const override
 842         {
 843                 return 200;
 844         }
 845
 846         core::monitor::subject& monitor_output()
 847         {
 848                 return consumer_->monitor_output();
 849         }
 850 };
 851 spl::shared_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)
 852 {
 853         auto params2 = params;
 854         auto separate_key_it = std::find(params2.begin(), params2.end(), L"SEPARATE_KEY");
 855         bool separate_key = false;
 856
 857         if (separate_key_it != params2.end())
 858         {
 859                 separate_key = true;
 860                 params2.erase(separate_key_it);
 861         }
 862
 863         auto str = std::accumulate(params2.begin(), params2.end(), std::wstring(), [](const std::wstring& lhs, const std::wstring& rhs) {return lhs + L" " + rhs;});
 864
 865         boost::wregex path_exp(LR"(\s*FILE(\s(?<PATH>.+\.[^\s]+))?.*)", boost::regex::icase);
 866
 867         boost::wsmatch path;
 868         if(!boost::regex_match(str, path, path_exp))
 869                 return core::frame_consumer::empty();
 870
 871         boost::wregex opt_exp(LR"(-((?<NAME>[^\s]+)\s+(?<VALUE>[^\s]+)))");
 872
 873         std::vector<option> options;
 874         for(boost::wsregex_iterator it(str.begin(), str.end(), opt_exp); it != boost::wsregex_iterator(); ++it)
 875         {
 876                 auto name  = u8(boost::trim_copy(boost::to_lower_copy((*it)["NAME"].str())));
 877                 auto value = u8(boost::trim_copy(boost::to_lower_copy((*it)["VALUE"].str())));
 878
 879                 if(value == "h264")
 880                         value = "libx264";
 881                 else if(value == "dvcpro")
 882                         value = "dvvideo";
 883
 884                 options.push_back(option(name, value));
 885         }
 886
 887         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + path["PATH"].str(), options, separate_key);
 888 }
 889
 890 spl::shared_ptr<core::frame_consumer> create_consumer(const boost::property_tree::wptree& ptree)
 891 {
 892         auto filename           = ptree.get<std::wstring>(L"path");
 893         auto codec                      = ptree.get(L"vcodec", L"libx264");
 894         auto separate_key       = ptree.get(L"separate-key", false);
 895
 896         std::vector<option> options;
 897         options.push_back(option("vcodec", u8(codec)));
 898
 899         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + filename, options, separate_key);
 900 }
 901
 902 }}