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 std::vector<uint8_t, tbb::cache_aligned_allocator<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_;
 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_;
 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                 , oc_(avformat_alloc_context(), av_free)
 289                 , format_desc_(format_desc)
 290                 , frame_number_(0)
 291                 , output_format_(format_desc, filename, options)
 292                 , key_only_(key_only)
 293                 , executor_(print())
 294         {
 295                 check_space();
 296
 297                 // TODO: Ask stakeholders about case where file already exists.
 298                 boost::filesystem::remove(boost::filesystem::path(env::media_folder() + u16(filename))); // Delete the file if it exists
 299
 300                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));
 301                 graph_->set_color("dropped-frame", diagnostics::color(0.3f, 0.6f, 0.3f));
 302                 graph_->set_text(print());
 303                 diagnostics::register_graph(graph_);
 304
 305                 executor_.set_capacity(8);
 306
 307                 oc_->oformat = output_format_.format;
 308
 309                 strcpy_s(oc_->filename, filename_.c_str());
 310
 311                 //  Add the audio and video streams using the default format codecs     and initialize the codecs.
 312                 video_st_ = add_video_stream(options);
 313
 314                 if (!key_only)
 315                         audio_st_ = add_audio_stream(options);
 316
 317                 av_dump_format(oc_.get(), 0, filename_.c_str(), 1);
 318
 319                 // Open the output ffmpeg, if needed.
 320                 if (!(oc_->oformat->flags & AVFMT_NOFILE))
 321                         THROW_ON_ERROR2(avio_open(&oc_->pb, filename.c_str(), AVIO_FLAG_WRITE), "[ffmpeg_consumer]");
 322
 323                 THROW_ON_ERROR2(avformat_write_header(oc_.get(), nullptr), "[ffmpeg_consumer]");
 324
 325                 if(options.size() > 0)
 326                 {
 327                         BOOST_FOREACH(auto& option, options)
 328                                 CASPAR_LOG(warning) << L"Invalid option: -" << u16(option.name) << L" " << u16(option.value);
 329                 }
 330
 331                 CASPAR_LOG(info) << print() << L" Successfully Initialized.";
 332         }
 333
 334         ~ffmpeg_consumer()
 335         {
 336                 try
 337                 {
 338                         executor_.wait();
 339                 }
 340                 catch(...)
 341                 {
 342                         CASPAR_LOG_CURRENT_EXCEPTION();
 343                 }
 344
 345                 LOG_ON_ERROR2(av_write_trailer(oc_.get()), "[ffmpeg_consumer]");
 346
 347                 if (!key_only_)
 348                         audio_st_.reset();
 349
 350                 video_st_.reset();
 351
 352                 if (!(oc_->oformat->flags & AVFMT_NOFILE))
 353                         LOG_ON_ERROR2(avio_close(oc_->pb), "[ffmpeg_consumer]");
 354
 355                 CASPAR_LOG(info) << print() << L" Successfully Uninitialized.";
 356         }
 357
 358         // frame_consumer
 359
 360         void send(core::const_frame& frame)
 361         {
 362                 auto exception = lock(exception_mutex_, [&]
 363                 {
 364                         return exception_;
 365                 });
 366
 367                 if(exception != nullptr)
 368                         std::rethrow_exception(exception);
 369
 370                 executor_.begin_invoke([=]
 371                 {
 372                         encode(frame);
 373                 });
 374         }
 375
 376         bool ready_for_frame() const
 377         {
 378                 return !executor_.is_full();
 379         }
 380
 381         void mark_dropped()
 382         {
 383                 graph_->set_tag("dropped-frame");
 384         }
 385
 386         std::wstring print() const
 387         {
 388                 return L"ffmpeg[" + u16(filename_) + L"]";
 389         }
 390
 391         core::monitor::subject& monitor_output()
 392         {
 393                 return monitor_subject_;
 394         }
 395
 396 private:
 397         std::shared_ptr<AVStream> add_video_stream(std::vector<option>& options)
 398         {
 399                 if(output_format_.vcodec == CODEC_ID_NONE)
 400                         return nullptr;
 401
 402                 auto st = av_new_stream(oc_.get(), 0);
 403                 if (!st)
 404                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate video-stream.") << boost::errinfo_api_function("av_new_stream"));
 405
 406                 auto encoder = avcodec_find_encoder(output_format_.vcodec);
 407                 if (!encoder)
 408                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Codec not found."));
 409
 410                 auto c = st->codec;
 411
 412                 avcodec_get_context_defaults3(c, encoder);
 413
 414                 c->codec_id                     = output_format_.vcodec;
 415                 c->codec_type           = AVMEDIA_TYPE_VIDEO;
 416                 c->width                        = output_format_.width;
 417                 c->height                       = output_format_.height - output_format_.croptop - output_format_.cropbot;
 418                 c->time_base.den        = format_desc_.time_scale;
 419                 c->time_base.num        = format_desc_.duration;
 420                 c->gop_size                     = 25;
 421                 c->flags                   |= format_desc_.field_mode == core::field_mode::progressive ? 0 : (CODEC_FLAG_INTERLACED_ME | CODEC_FLAG_INTERLACED_DCT);
 422                 c->pix_fmt                      = c->pix_fmt != PIX_FMT_NONE ? c->pix_fmt : PIX_FMT_YUV420P;
 423
 424                 if(c->codec_id == CODEC_ID_PRORES)
 425                 {
 426                         c->bit_rate     = output_format_.width < 1280 ? 63*1000000 : 220*1000000;
 427                         c->pix_fmt      = PIX_FMT_YUV422P10;
 428                 }
 429                 else if(c->codec_id == CODEC_ID_DNXHD)
 430                 {
 431                         if(c->width < 1280 || c->height < 720)
 432                                 CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Unsupported video dimensions."));
 433
 434                         c->bit_rate     = 220*1000000;
 435                         c->pix_fmt      = PIX_FMT_YUV422P;
 436                 }
 437                 else if(c->codec_id == CODEC_ID_DVVIDEO)
 438                 {
 439                         c->width = c->height == 1280 ? 960  : c->width;
 440
 441                         if(format_desc_.format == core::video_format::ntsc)
 442                         {
 443                                 c->pix_fmt = PIX_FMT_YUV411P;
 444                                 output_format_.croptop = 2;
 445                                 output_format_.cropbot = 4;
 446                                 c->height                          = output_format_.height - output_format_.croptop - output_format_.cropbot;
 447                         }
 448                         else if(format_desc_.format == core::video_format::pal)
 449                                 c->pix_fmt = PIX_FMT_YUV420P;
 450                         else // dv50
 451                                 c->pix_fmt = PIX_FMT_YUV422P;
 452
 453                         if(format_desc_.duration == 1001)
 454                                 c->width = c->height == 1080 ? 1280 : c->width;
 455                         else
 456                                 c->width = c->height == 1080 ? 1440 : c->width;
 457                 }
 458                 else if(c->codec_id == CODEC_ID_H264)
 459                 {
 460                         c->pix_fmt = PIX_FMT_YUV420P;
 461                         av_opt_set(c->priv_data, "preset", "ultrafast", 0);
 462                         av_opt_set(c->priv_data, "tune",   "fastdecode",   0);
 463                         av_opt_set(c->priv_data, "crf",    "5",     0);
 464                 }
 465                 else if(c->codec_id == CODEC_ID_QTRLE)
 466                 {
 467                         c->pix_fmt = PIX_FMT_ARGB;
 468                 }
 469
 470                 boost::range::remove_erase_if(options, [&](const option& o)
 471                 {
 472                         return o.name.at(0) != 'a' && ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;
 473                 });
 474
 475                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)
 476                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 477
 478                 THROW_ON_ERROR2(tbb_avcodec_open(c, encoder), "[ffmpeg_consumer]");
 479
 480                 return std::shared_ptr<AVStream>(st, [](AVStream* st)
 481                 {
 482                         LOG_ON_ERROR2(tbb_avcodec_close(st->codec), "[ffmpeg_consumer]");
 483                         av_freep(&st->codec);
 484                         av_freep(&st);
 485                 });
 486         }
 487
 488         std::shared_ptr<AVStream> add_audio_stream(std::vector<option>& options)
 489         {
 490                 if(output_format_.acodec == CODEC_ID_NONE)
 491                         return nullptr;
 492
 493                 auto st = av_new_stream(oc_.get(), 1);
 494                 if(!st)
 495                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate audio-stream") << boost::errinfo_api_function("av_new_stream"));
 496
 497                 auto encoder = avcodec_find_encoder(output_format_.acodec);
 498                 if (!encoder)
 499                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));
 500
 501                 auto c = st->codec;
 502
 503                 avcodec_get_context_defaults3(c, encoder);
 504
 505                 c->codec_id                     = output_format_.acodec;
 506                 c->codec_type           = AVMEDIA_TYPE_AUDIO;
 507                 c->sample_rate          = 48000;
 508                 c->channels                     = 2;
 509                 c->sample_fmt           = AV_SAMPLE_FMT_S16;
 510                 c->time_base.num        = 1;
 511                 c->time_base.den        = c->sample_rate;
 512
 513                 if(output_format_.vcodec == CODEC_ID_FLV1)
 514                         c->sample_rate  = 44100;
 515
 516                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)
 517                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 518
 519                 boost::range::remove_erase_if(options, [&](const option& o)
 520                 {
 521                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;
 522                 });
 523
 524                 THROW_ON_ERROR2(avcodec_open2(c, encoder, nullptr), "[ffmpeg_consumer]");
 525
 526                 return std::shared_ptr<AVStream>(st, [](AVStream* st)
 527                 {
 528                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");;
 529                         av_freep(&st->codec);
 530                         av_freep(&st);
 531                 });
 532         }
 533
 534         void encode_video_frame(core::const_frame frame)
 535         {
 536                 if(!video_st_)
 537                         return;
 538
 539                 auto enc = video_st_->codec;
 540
 541                 auto av_frame                           = convert_video(frame, enc);
 542                 av_frame->interlaced_frame      = format_desc_.field_mode != core::field_mode::progressive;
 543                 av_frame->top_field_first       = format_desc_.field_mode == core::field_mode::upper;
 544                 av_frame->pts                           = frame_number_++;
 545
 546                 monitor_subject_ << core::monitor::message("/frame")
 547                                 % static_cast<int64_t>(frame_number_)
 548                                 % static_cast<int64_t>(std::numeric_limits<int64_t>::max());
 549
 550                 AVPacket pkt;
 551                 av_init_packet(&pkt);
 552                 pkt.data = nullptr;
 553                 pkt.size = 0;
 554
 555                 int got_packet = 0;
 556                 THROW_ON_ERROR2(avcodec_encode_video2(enc, &pkt, av_frame.get(), &got_packet), "[ffmpeg_consumer]");
 557                 std::shared_ptr<AVPacket> guard(&pkt, av_free_packet);
 558
 559                 if(!got_packet)
 560                         return;
 561
 562                 if (pkt.pts != AV_NOPTS_VALUE)
 563                         pkt.pts = av_rescale_q(pkt.pts, enc->time_base, video_st_->time_base);
 564                 if (pkt.dts != AV_NOPTS_VALUE)
 565                         pkt.dts = av_rescale_q(pkt.dts, enc->time_base, video_st_->time_base);
 566
 567                 pkt.stream_index = video_st_->index;
 568
 569                 THROW_ON_ERROR2(av_interleaved_write_frame(oc_.get(), &pkt), "[ffmpeg_consumer]");
 570         }
 571
 572         uint64_t get_channel_layout(AVCodecContext* dec)
 573         {
 574                 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);
 575                 return layout;
 576         }
 577
 578         void encode_audio_frame(core::const_frame frame)
 579         {
 580                 if(!audio_st_)
 581                         return;
 582
 583                 auto enc = audio_st_->codec;
 584
 585                 boost::push_back(audio_buffer_, convert_audio(frame, enc));
 586
 587                 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());
 588
 589                 while(audio_buffer_.size() >= frame_size)
 590                 {
 591                         std::shared_ptr<AVFrame> av_frame(avcodec_alloc_frame(), av_free);
 592                         avcodec_get_frame_defaults(av_frame.get());
 593                         av_frame->nb_samples = frame_size / (enc->channels * av_get_bytes_per_sample(enc->sample_fmt));
 594
 595                         AVPacket pkt;
 596                         av_init_packet(&pkt);
 597                         pkt.data = nullptr;
 598                         pkt.size = 0;
 599
 600                         THROW_ON_ERROR2(avcodec_fill_audio_frame(av_frame.get(), enc->channels, enc->sample_fmt, audio_buffer_.data(), frame_size, 1), "[ffmpeg_consumer]");
 601
 602                         int got_packet = 0;
 603                         THROW_ON_ERROR2(avcodec_encode_audio2(enc, &pkt, av_frame.get(), &got_packet), "[ffmpeg_consumer]");
 604                         std::shared_ptr<AVPacket> guard(&pkt, av_free_packet);
 605
 606                         audio_buffer_.erase(audio_buffer_.begin(), audio_buffer_.begin() + frame_size);
 607
 608                         if(!got_packet)
 609                                 return;
 610
 611                         if (pkt.pts != AV_NOPTS_VALUE)
 612                                 pkt.pts      = av_rescale_q(pkt.pts, enc->time_base, audio_st_->time_base);
 613                         if (pkt.dts != AV_NOPTS_VALUE)
 614                                 pkt.dts      = av_rescale_q(pkt.dts, enc->time_base, audio_st_->time_base);
 615                         if (pkt.duration > 0)
 616                                 pkt.duration = static_cast<int>(av_rescale_q(pkt.duration, enc->time_base, audio_st_->time_base));
 617
 618                         pkt.stream_index = audio_st_->index;
 619
 620                         THROW_ON_ERROR2(av_interleaved_write_frame(oc_.get(), &pkt), "[ffmpeg_consumer]");
 621                 }
 622         }
 623
 624         std::shared_ptr<AVFrame> convert_video(core::const_frame frame, AVCodecContext* c)
 625         {
 626                 if(!sws_)
 627                 {
 628                         sws_.reset(sws_getContext(format_desc_.width,
 629                                                                           format_desc_.height - output_format_.croptop  - output_format_.cropbot,
 630                                                                           PIX_FMT_BGRA,
 631                                                                           c->width,
 632                                                                           c->height,
 633                                                                           c->pix_fmt,
 634                                                                           SWS_BICUBIC, nullptr, nullptr, nullptr),
 635                                                 sws_freeContext);
 636                         if (sws_ == nullptr)
 637                                 CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Cannot initialize the conversion context"));
 638                 }
 639
 640                 // #in_frame
 641
 642                 std::shared_ptr<AVFrame> in_frame(avcodec_alloc_frame(), av_free);
 643
 644                 auto in_picture = reinterpret_cast<AVPicture*>(in_frame.get());
 645
 646                 if (key_only_)
 647                 {
 648                         key_picture_buf_.resize(frame.image_data().size());
 649                         in_picture->linesize[0] = format_desc_.width * 4;
 650                         in_picture->data[0] = key_picture_buf_.data();
 651
 652                         aligned_memshfl(in_picture->data[0], frame.image_data().begin(), frame.image_data().size(), 0x0F0F0F0F, 0x0B0B0B0B, 0x07070707, 0x03030303);
 653                 }
 654                 else
 655                 {
 656                         avpicture_fill(
 657                                         in_picture,
 658                                         const_cast<uint8_t*>(frame.image_data().begin()),
 659                                         PIX_FMT_BGRA,
 660                                         format_desc_.width,
 661                                         format_desc_.height - output_format_.croptop  - output_format_.cropbot);
 662                 }
 663
 664                 // crop-top
 665
 666                 for(int n = 0; n < 4; ++n)
 667                         in_frame->data[n] += in_frame->linesize[n] * output_format_.croptop;
 668
 669                 // #out_frame
 670
 671                 std::shared_ptr<AVFrame> out_frame(avcodec_alloc_frame(), av_free);
 672
 673                 av_image_fill_linesizes(out_frame->linesize, c->pix_fmt, c->width);
 674                 for(int n = 0; n < 4; ++n)
 675                         out_frame->linesize[n] += 32 - (out_frame->linesize[n] % 32); // align
 676
 677                 picture_buffer_.resize(av_image_fill_pointers(out_frame->data, c->pix_fmt, c->height, nullptr, out_frame->linesize));
 678                 av_image_fill_pointers(out_frame->data, c->pix_fmt, c->height, picture_buffer_.data(), out_frame->linesize);
 679
 680                 // #scale
 681
 682                 sws_scale(sws_.get(),
 683                                   in_frame->data,
 684                                   in_frame->linesize,
 685                                   0,
 686                                   format_desc_.height - output_format_.cropbot - output_format_.croptop,
 687                                   out_frame->data,
 688                                   out_frame->linesize);
 689
 690                 return out_frame;
 691         }
 692
 693         byte_vector convert_audio(core::const_frame& frame, AVCodecContext* c)
 694         {
 695                 if(!swr_)
 696                 {
 697                         swr_ = std::shared_ptr<SwrContext>(swr_alloc_set_opts(nullptr,
 698                                                                                 get_channel_layout(c), c->sample_fmt, c->sample_rate,
 699                                                                                 av_get_default_channel_layout(format_desc_.audio_channels), AV_SAMPLE_FMT_S32, format_desc_.audio_sample_rate,
 700                                                                                 0, nullptr), [](SwrContext* p){swr_free(&p);});
 701
 702                         if(!swr_)
 703                                 CASPAR_THROW_EXCEPTION(bad_alloc());
 704
 705                         THROW_ON_ERROR2(swr_init(swr_.get()), "[audio_decoder]");
 706                 }
 707
 708                 byte_vector buffer(48000);
 709
 710                 const uint8_t* in[]  = {reinterpret_cast<const uint8_t*>(frame.audio_data().data())};
 711                 uint8_t*       out[] = {buffer.data()};
 712
 713                 auto channel_samples = swr_convert(swr_.get(),
 714                                                                                    out, static_cast<int>(buffer.size()) / c->channels / av_get_bytes_per_sample(c->sample_fmt),
 715                                                                                    in, static_cast<int>(frame.audio_data().size()/format_desc_.audio_channels));
 716
 717                 buffer.resize(channel_samples * c->channels * av_get_bytes_per_sample(c->sample_fmt));
 718
 719                 return buffer;
 720         }
 721
 722         void check_space()
 723         {
 724                 auto space = boost::filesystem::space(boost::filesystem::path(filename_).parent_path());
 725                 if(space.available < 512*1000000)
 726                         BOOST_THROW_EXCEPTION(file_write_error() << msg_info("out of space"));
 727         }
 728
 729         void encode(const core::const_frame& frame)
 730         {
 731                 try
 732                 {
 733                         if(frame_number_ % 25 == 0)
 734                                 check_space();
 735
 736                         boost::timer frame_timer;
 737
 738                         encode_video_frame(frame);
 739                         encode_audio_frame(frame);
 740
 741                         graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);
 742                 }
 743                 catch(...)
 744                 {
 745                         lock(exception_mutex_, [&]
 746                         {
 747                                 exception_ = std::current_exception();
 748                         });
 749                 }
 750         }
 751 };
 752
 753 struct ffmpeg_consumer_proxy : public core::frame_consumer
 754 {
 755         const std::wstring                      filename_;
 756         const std::vector<option>       options_;
 757         const bool                                      separate_key_;
 758
 759         std::unique_ptr<ffmpeg_consumer> consumer_;
 760         std::unique_ptr<ffmpeg_consumer> key_only_consumer_;
 761
 762 public:
 763
 764         ffmpeg_consumer_proxy(const std::wstring& filename, const std::vector<option>& options, bool separate_key)
 765                 : filename_(filename)
 766                 , options_(options)
 767                 , separate_key_(separate_key_)
 768         {
 769         }
 770
 771         virtual void initialize(const core::video_format_desc& format_desc, int)
 772         {
 773                 if(consumer_)
 774                         BOOST_THROW_EXCEPTION(invalid_operation() << msg_info("Cannot reinitialize ffmpeg-consumer."));
 775
 776                 consumer_.reset(new ffmpeg_consumer(u8(filename_), format_desc, options_, false));
 777
 778                 if (separate_key_)
 779                 {
 780                         boost::filesystem::wpath fill_file(filename_);
 781                         auto without_extension = u16(fill_file.stem().string());
 782                         auto key_file = env::media_folder() + without_extension + L"_A" + u16(fill_file.extension().string());
 783
 784                         key_only_consumer_.reset(new ffmpeg_consumer(u8(key_file), format_desc, options_, true));
 785                 }
 786         }
 787
 788         std::future<bool> send(core::const_frame frame) override
 789         {
 790                 bool ready_for_frame = consumer_->ready_for_frame();
 791
 792                 if (ready_for_frame && separate_key_)
 793                         ready_for_frame = ready_for_frame && key_only_consumer_->ready_for_frame();
 794
 795                 if (ready_for_frame)
 796                 {
 797                         consumer_->send(frame);
 798
 799                         if (separate_key_)
 800                                 key_only_consumer_->send(frame);
 801                 }
 802                 else
 803                 {
 804                         consumer_->mark_dropped();
 805
 806                         if (separate_key_)
 807                                 key_only_consumer_->mark_dropped();
 808                 }
 809
 810                 return make_ready_future(true);
 811         }
 812
 813         std::wstring print() const override
 814         {
 815                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";
 816         }
 817
 818         std::wstring name() const override
 819         {
 820                 return L"file";
 821         }
 822
 823         boost::property_tree::wptree info() const override
 824         {
 825                 boost::property_tree::wptree info;
 826                 info.add(L"type", L"file");
 827                 info.add(L"filename", filename_);
 828                 info.add(L"separate_key", separate_key_);
 829                 return info;
 830         }
 831
 832         bool has_synchronization_clock() const override
 833         {
 834                 return false;
 835         }
 836
 837         int buffer_depth() const override
 838         {
 839                 return 1;
 840         }
 841
 842         int index() const override
 843         {
 844                 return 200;
 845         }
 846
 847         core::monitor::subject& monitor_output()
 848         {
 849                 return consumer_->monitor_output();
 850         }
 851 };
 852 spl::shared_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)
 853 {
 854         auto params2 = params;
 855         auto separate_key_it = std::find(params2.begin(), params2.end(), L"SEPARATE_KEY");
 856         bool separate_key = false;
 857
 858         if (separate_key_it != params2.end())
 859         {
 860                 separate_key = true;
 861                 params2.erase(separate_key_it);
 862         }
 863
 864         auto str = std::accumulate(params2.begin(), params2.end(), std::wstring(), [](const std::wstring& lhs, const std::wstring& rhs) {return lhs + L" " + rhs;});
 865
 866         boost::wregex path_exp(L"\\s*FILE(\\s(?<PATH>.+\\.[^\\s]+))?.*", boost::regex::icase);
 867
 868         boost::wsmatch path;
 869         if(!boost::regex_match(str, path, path_exp))
 870                 return core::frame_consumer::empty();
 871
 872         boost::wregex opt_exp(L"-((?<NAME>[^\\s]+)\\s+(?<VALUE>[^\\s]+))");
 873
 874         std::vector<option> options;
 875         for(boost::wsregex_iterator it(str.begin(), str.end(), opt_exp); it != boost::wsregex_iterator(); ++it)
 876         {
 877                 auto name  = u8(boost::trim_copy(boost::to_lower_copy((*it)["NAME"].str())));
 878                 auto value = u8(boost::trim_copy(boost::to_lower_copy((*it)["VALUE"].str())));
 879
 880                 if(value == "h264")
 881                         value = "libx264";
 882                 else if(value == "dvcpro")
 883                         value = "dvvideo";
 884
 885                 options.push_back(option(name, value));
 886         }
 887
 888         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + path["PATH"].str(), options, separate_key);
 889 }
 890
 891 spl::shared_ptr<core::frame_consumer> create_consumer(const boost::property_tree::wptree& ptree)
 892 {
 893         auto filename           = ptree.get<std::wstring>(L"path");
 894         auto codec                      = ptree.get(L"vcodec", L"libx264");
 895         auto separate_key       = ptree.get(L"separate-key", false);
 896
 897         std::vector<option> options;
 898         options.push_back(option("vcodec", u8(codec)));
 899
 900         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + filename, options, separate_key);
 901 }
 902
 903 }}