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 #include <core/help/help_repository.h>
  35 #include <core/help/help_sink.h>
  36
  37 #include <common/array.h>
  38 #include <common/env.h>
  39 #include <common/except.h>
  40 #include <common/executor.h>
  41 #include <common/future.h>
  42 #include <common/diagnostics/graph.h>
  43 #include <common/lock.h>
  44 #include <common/memory.h>
  45 #include <common/param.h>
  46 #include <common/utf.h>
  47 #include <common/assert.h>
  48 #include <common/memshfl.h>
  49 #include <common/timer.h>
  50
  51 #include <boost/algorithm/string.hpp>
  52 #include <boost/property_tree/ptree.hpp>
  53 #include <boost/filesystem.hpp>
  54 #include <boost/range/algorithm.hpp>
  55 #include <boost/range/algorithm_ext.hpp>
  56 #include <boost/lexical_cast.hpp>
  57
  58 #include <tbb/spin_mutex.h>
  59
  60 #include <numeric>
  61 #include <cstring>
  62
  63 #if defined(_MSC_VER)
  64 #pragma warning (push)
  65 #pragma warning (disable : 4244)
  66 #endif
  67 extern "C"
  68 {
  69         #define __STDC_CONSTANT_MACROS
  70         #define __STDC_LIMIT_MACROS
  71         #include <libavformat/avformat.h>
  72         #include <libswscale/swscale.h>
  73         #include <libavutil/opt.h>
  74         #include <libavutil/pixdesc.h>
  75         #include <libavutil/parseutils.h>
  76         #include <libavutil/samplefmt.h>
  77         #include <libswresample/swresample.h>
  78 }
  79 #if defined(_MSC_VER)
  80 #pragma warning (pop)
  81 #endif
  82
  83 namespace caspar { namespace ffmpeg {
  84
  85 int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
  86 {
  87         AVClass* av_class = *(AVClass**)obj;
  88
  89         if((strcmp(name, "pix_fmt") == 0 || strcmp(name, "pixel_format") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)
  90         {
  91                 AVCodecContext* c = (AVCodecContext*)obj;
  92                 auto pix_fmt = av_get_pix_fmt(val);
  93                 if(pix_fmt == PIX_FMT_NONE)
  94                         return -1;
  95                 c->pix_fmt = pix_fmt;
  96                 return 0;
  97         }
  98         //if((strcmp(name, "r") == 0 || strcmp(name, "frame_rate") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)
  99         //{
 100         //      AVCodecContext* c = (AVCodecContext*)obj;
 101
 102         //      if(c->codec_type != AVMEDIA_TYPE_VIDEO)
 103         //              return -1;
 104
 105         //      AVRational rate;
 106         //      int ret = av_parse_video_rate(&rate, val);
 107         //      if(ret < 0)
 108         //              return ret;
 109
 110         //      c->time_base.num = rate.den;
 111         //      c->time_base.den = rate.num;
 112         //      return 0;
 113         //}
 114
 115         return ::av_opt_set(obj, name, val, search_flags);
 116 }
 117
 118 struct option
 119 {
 120         std::string name;
 121         std::string value;
 122
 123         option(std::string name, std::string value)
 124                 : name(std::move(name))
 125                 , value(std::move(value))
 126         {
 127         }
 128 };
 129
 130 struct output_format
 131 {
 132         AVOutputFormat* format;
 133         int                             width;
 134         int                             height;
 135         AVCodecID               vcodec;
 136         AVCodecID               acodec;
 137         int                             croptop;
 138         int                             cropbot;
 139
 140         output_format(const core::video_format_desc& format_desc, const std::string& filename, std::vector<option>& options)
 141                 : format(av_guess_format(nullptr, filename.c_str(), nullptr))
 142                 , width(format_desc.width)
 143                 , height(format_desc.height)
 144                 , vcodec(CODEC_ID_NONE)
 145                 , acodec(CODEC_ID_NONE)
 146                 , croptop(0)
 147                 , cropbot(0)
 148         {
 149                 if(boost::iequals(boost::filesystem::path(filename).extension().string(), ".dv"))
 150                         set_opt("f", "dv");
 151
 152                 boost::range::remove_erase_if(options, [&](const option& o)
 153                 {
 154                         return set_opt(o.name, o.value);
 155                 });
 156
 157                 if(vcodec == CODEC_ID_NONE && format)
 158                         vcodec = format->video_codec;
 159
 160                 if(acodec == CODEC_ID_NONE && format)
 161                         acodec = format->audio_codec;
 162
 163                 if(vcodec == CODEC_ID_NONE)
 164                         vcodec = CODEC_ID_H264;
 165
 166                 if(acodec == CODEC_ID_NONE)
 167                         acodec = CODEC_ID_PCM_S16LE;
 168         }
 169
 170         bool set_opt(const std::string& name, const std::string& value)
 171         {
 172                 //if(name == "target")
 173                 //{
 174                 //      enum { PAL, NTSC, FILM, UNKNOWN } norm = UNKNOWN;
 175                 //
 176                 //      if(name.find("pal-") != std::string::npos)
 177                 //              norm = PAL;
 178                 //      else if(name.find("ntsc-") != std::string::npos)
 179                 //              norm = NTSC;
 180
 181                 //      if(norm == UNKNOWN)
 182                 //              CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("target"));
 183                 //
 184                 //      if (name.find("-dv") != std::string::npos)
 185                 //      {
 186                 //              set_opt("f", "dv");
 187                 //              if(norm == PAL)
 188                 //              {
 189                 //                      set_opt("s", "720x576");
 190                 //              }
 191                 //              else
 192                 //              {
 193                 //                      set_opt("s", "720x480");
 194                 //                      if(height == 486)
 195                 //                      {
 196                 //                              set_opt("croptop", "2");
 197                 //                              set_opt("cropbot", "4");
 198                 //                      }
 199                 //              }
 200                 //              set_opt("s", norm == PAL ? "720x576" : "720x480");
 201                 //      }
 202
 203                 //      return true;
 204                 //}
 205                 //else
 206                 if(name == "f")
 207                 {
 208                         format = av_guess_format(value.c_str(), nullptr, nullptr);
 209
 210                         if(format == nullptr)
 211                                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("f"));
 212
 213                         return true;
 214                 }
 215                 else if(name == "vcodec" || name == "v:codec")
 216                 {
 217                         auto c = avcodec_find_encoder_by_name(value.c_str());
 218                         if(c == nullptr)
 219                                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("vcodec"));
 220
 221                         vcodec = avcodec_find_encoder_by_name(value.c_str())->id;
 222                         return true;
 223
 224                 }
 225                 else if(name == "acodec" || name == "a:codec")
 226                 {
 227                         auto c = avcodec_find_encoder_by_name(value.c_str());
 228                         if(c == nullptr)
 229                                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("acodec"));
 230
 231                         acodec = avcodec_find_encoder_by_name(value.c_str())->id;
 232
 233                         return true;
 234                 }
 235                 else if(name == "s")
 236                 {
 237                         if(av_parse_video_size(&width, &height, value.c_str()) < 0)
 238                                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("s"));
 239
 240                         return true;
 241                 }
 242                 else if(name == "croptop")
 243                 {
 244                         croptop = boost::lexical_cast<int>(value);
 245
 246                         return true;
 247                 }
 248                 else if(name == "cropbot")
 249                 {
 250                         cropbot = boost::lexical_cast<int>(value);
 251
 252                         return true;
 253                 }
 254
 255                 return false;
 256         }
 257 };
 258
 259 typedef cache_aligned_vector<uint8_t> byte_vector;
 260
 261 struct ffmpeg_consumer : boost::noncopyable
 262 {
 263         const spl::shared_ptr<diagnostics::graph>       graph_;
 264         const std::string                                                       filename_;
 265         const std::shared_ptr<AVFormatContext>          oc_                                     { avformat_alloc_context(), avformat_free_context };
 266         const core::video_format_desc                           format_desc_;
 267
 268         core::monitor::subject                                          monitor_subject_;
 269
 270         tbb::spin_mutex                                                         exception_mutex_;
 271         std::exception_ptr                                                      exception_;
 272
 273         std::shared_ptr<AVStream>                                       audio_st_;
 274         std::shared_ptr<AVStream>                                       video_st_;
 275
 276         byte_vector                                                                     picture_buffer_;
 277         byte_vector                                                                     key_picture_buf_;
 278         byte_vector                                                                     audio_buffer_;
 279         std::shared_ptr<SwrContext>                                     swr_;
 280         std::shared_ptr<SwsContext>                                     sws_;
 281
 282         int64_t                                                                         frame_number_           = 0;
 283
 284         output_format                                                           output_format_;
 285         bool                                                                            key_only_;
 286         tbb::atomic<int64_t>                                            current_encoding_delay_;
 287
 288         executor                                                                        executor_;
 289 public:
 290         ffmpeg_consumer(const std::string& filename, const core::video_format_desc& format_desc, std::vector<option> options, bool key_only)
 291                 : filename_(filename)
 292                 , format_desc_(format_desc)
 293                 , output_format_(format_desc, filename, options)
 294                 , key_only_(key_only)
 295                 , executor_(print())
 296         {
 297                 current_encoding_delay_ = 0;
 298                 check_space();
 299
 300                 // TODO: Ask stakeholders about case where file already exists.
 301                 boost::filesystem::remove(boost::filesystem::path(env::media_folder() + u16(filename))); // Delete the file if it exists
 302
 303                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));
 304                 graph_->set_color("dropped-frame", diagnostics::color(0.3f, 0.6f, 0.3f));
 305                 graph_->set_text(print());
 306                 diagnostics::register_graph(graph_);
 307
 308                 executor_.set_capacity(8);
 309
 310                 oc_->oformat = output_format_.format;
 311
 312                 std::strcpy(oc_->filename, filename_.c_str());
 313
 314                 //  Add the audio and video streams using the default format codecs     and initialize the codecs.
 315                 video_st_ = add_video_stream(options);
 316
 317                 if (!key_only)
 318                         audio_st_ = add_audio_stream(options);
 319
 320                 av_dump_format(oc_.get(), 0, filename_.c_str(), 1);
 321
 322                 // Open the output ffmpeg, if needed.
 323                 if (!(oc_->oformat->flags & AVFMT_NOFILE))
 324                         THROW_ON_ERROR2(avio_open(&oc_->pb, filename.c_str(), AVIO_FLAG_WRITE), "[ffmpeg_consumer]");
 325
 326                 THROW_ON_ERROR2(avformat_write_header(oc_.get(), nullptr), "[ffmpeg_consumer]");
 327
 328                 if(options.size() > 0)
 329                 {
 330                         for (auto& option : options)
 331                                 CASPAR_LOG(warning) << L"Invalid option: -" << u16(option.name) << L" " << u16(option.value);
 332                 }
 333
 334                 CASPAR_LOG(info) << print() << L" Successfully Initialized.";
 335         }
 336
 337         ~ffmpeg_consumer()
 338         {
 339                 try
 340                 {
 341                         executor_.wait();
 342                 }
 343                 catch(...)
 344                 {
 345                         CASPAR_LOG_CURRENT_EXCEPTION();
 346                 }
 347
 348                 LOG_ON_ERROR2(av_write_trailer(oc_.get()), "[ffmpeg_consumer]");
 349
 350                 if (!key_only_)
 351                         audio_st_.reset();
 352
 353                 video_st_.reset();
 354
 355                 if (!(oc_->oformat->flags & AVFMT_NOFILE))
 356                         LOG_ON_ERROR2(avio_close(oc_->pb), "[ffmpeg_consumer]");
 357
 358                 CASPAR_LOG(info) << print() << L" Successfully Uninitialized.";
 359         }
 360
 361         // frame_consumer
 362
 363         void send(core::const_frame& frame)
 364         {
 365                 auto exception = lock(exception_mutex_, [&]
 366                 {
 367                         return exception_;
 368                 });
 369
 370                 if(exception != nullptr)
 371                         std::rethrow_exception(exception);
 372
 373                 executor_.begin_invoke([=]
 374                 {
 375                         encode(frame);
 376                         current_encoding_delay_ = frame.get_age_millis();
 377                 });
 378         }
 379
 380         bool ready_for_frame() const
 381         {
 382                 return !executor_.is_full();
 383         }
 384
 385         void mark_dropped()
 386         {
 387                 graph_->set_tag("dropped-frame");
 388         }
 389
 390         std::wstring print() const
 391         {
 392                 return L"ffmpeg[" + u16(filename_) + L"]";
 393         }
 394
 395         core::monitor::subject& monitor_output()
 396         {
 397                 return monitor_subject_;
 398         }
 399
 400 private:
 401         std::shared_ptr<AVStream> add_video_stream(std::vector<option>& options)
 402         {
 403                 if(output_format_.vcodec == CODEC_ID_NONE)
 404                         return nullptr;
 405
 406                 auto st = avformat_new_stream(oc_.get(), 0);
 407                 if (!st)
 408                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate video-stream.") << boost::errinfo_api_function("av_new_stream"));
 409
 410                 auto encoder = avcodec_find_encoder(output_format_.vcodec);
 411                 if (!encoder)
 412                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Codec not found."));
 413
 414                 auto c = st->codec;
 415
 416                 avcodec_get_context_defaults3(c, encoder);
 417
 418                 c->codec_id                     = output_format_.vcodec;
 419                 c->codec_type           = AVMEDIA_TYPE_VIDEO;
 420                 c->width                        = output_format_.width;
 421                 c->height                       = output_format_.height - output_format_.croptop - output_format_.cropbot;
 422                 st->time_base.den       = format_desc_.time_scale;
 423                 st->time_base.num       = format_desc_.duration;
 424                 c->gop_size                     = 25;
 425                 c->flags                   |= format_desc_.field_mode == core::field_mode::progressive ? 0 : (CODEC_FLAG_INTERLACED_ME | CODEC_FLAG_INTERLACED_DCT);
 426                 c->pix_fmt                      = c->pix_fmt != PIX_FMT_NONE ? c->pix_fmt : PIX_FMT_YUV420P;
 427
 428                 if(c->codec_id == CODEC_ID_PRORES)
 429                 {
 430                         c->bit_rate     = output_format_.width < 1280 ? 63*1000000 : 220*1000000;
 431                         c->pix_fmt      = PIX_FMT_YUV422P10;
 432                 }
 433                 else if(c->codec_id == CODEC_ID_DNXHD)
 434                 {
 435                         if(c->width < 1280 || c->height < 720)
 436                                 CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Unsupported video dimensions."));
 437
 438                         c->bit_rate     = 220*1000000;
 439                         c->pix_fmt      = PIX_FMT_YUV422P;
 440                 }
 441                 else if(c->codec_id == CODEC_ID_DVVIDEO)
 442                 {
 443                         c->width = c->height == 1280 ? 960  : c->width;
 444
 445                         if(format_desc_.format == core::video_format::ntsc)
 446                         {
 447                                 c->pix_fmt = PIX_FMT_YUV411P;
 448                                 output_format_.croptop = 2;
 449                                 output_format_.cropbot = 4;
 450                                 c->height                          = output_format_.height - output_format_.croptop - output_format_.cropbot;
 451                         }
 452                         else if(format_desc_.format == core::video_format::pal)
 453                                 c->pix_fmt = PIX_FMT_YUV420P;
 454                         else // dv50
 455                                 c->pix_fmt = PIX_FMT_YUV422P;
 456
 457                         if(format_desc_.duration == 1001)
 458                                 c->width = c->height == 1080 ? 1280 : c->width;
 459                         else
 460                                 c->width = c->height == 1080 ? 1440 : c->width;
 461                 }
 462                 else if(c->codec_id == CODEC_ID_H264)
 463                 {
 464                         c->pix_fmt = PIX_FMT_YUV420P;
 465                         av_opt_set(c->priv_data, "preset", "ultrafast", 0);
 466                         av_opt_set(c->priv_data, "tune",   "fastdecode",   0);
 467                         av_opt_set(c->priv_data, "crf",    "5",     0);
 468                 }
 469                 else if(c->codec_id == CODEC_ID_QTRLE)
 470                 {
 471                         c->pix_fmt = PIX_FMT_ARGB;
 472                 }
 473
 474                 boost::range::remove_erase_if(options, [&](const option& o)
 475                 {
 476                         return o.name.at(0) != 'a' && ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;
 477                 });
 478
 479                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)
 480                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 481
 482                 THROW_ON_ERROR2(tbb_avcodec_open(c, encoder), "[ffmpeg_consumer]");
 483
 484                 return std::shared_ptr<AVStream>(st, [](AVStream* st)
 485                 {
 486                         LOG_ON_ERROR2(tbb_avcodec_close(st->codec), "[ffmpeg_consumer]");
 487                 });
 488         }
 489
 490         std::shared_ptr<AVStream> add_audio_stream(std::vector<option>& options)
 491         {
 492                 if(output_format_.acodec == CODEC_ID_NONE)
 493                         return nullptr;
 494
 495                 auto st = avformat_new_stream(oc_.get(), nullptr);
 496                 if(!st)
 497                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate audio-stream") << boost::errinfo_api_function("av_new_stream"));
 498
 499                 auto encoder = avcodec_find_encoder(output_format_.acodec);
 500                 if (!encoder)
 501                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));
 502
 503                 auto c = st->codec;
 504
 505                 avcodec_get_context_defaults3(c, encoder);
 506
 507                 c->codec_id                     = output_format_.acodec;
 508                 c->codec_type           = AVMEDIA_TYPE_AUDIO;
 509                 c->sample_rate          = 48000;
 510                 c->channels                     = 2;
 511                 c->sample_fmt           = AV_SAMPLE_FMT_S16;
 512                 st->time_base.num       = 1;
 513                 st->time_base.den       = c->sample_rate;
 514
 515                 if(output_format_.vcodec == CODEC_ID_FLV1)
 516                         c->sample_rate  = 44100;
 517
 518                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)
 519                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 520
 521                 boost::range::remove_erase_if(options, [&](const option& o)
 522                 {
 523                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;
 524                 });
 525
 526                 THROW_ON_ERROR2(avcodec_open2(c, encoder, nullptr), "[ffmpeg_consumer]");
 527
 528                 return std::shared_ptr<AVStream>(st, [](AVStream* st)
 529                 {
 530                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");
 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(av_frame_alloc(), [=](AVFrame* p) { av_frame_free(&p); });
 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                 out_frame->format       = c->pix_fmt;
 691                 out_frame->width        = c->width;
 692                 out_frame->height       = c->height;
 693
 694                 return out_frame;
 695         }
 696
 697         byte_vector convert_audio(core::const_frame& frame, AVCodecContext* c)
 698         {
 699                 if(!swr_)
 700                 {
 701                         swr_ = std::shared_ptr<SwrContext>(swr_alloc_set_opts(nullptr,
 702                                                                                 get_channel_layout(c), c->sample_fmt, c->sample_rate,
 703                                                                                 av_get_default_channel_layout(format_desc_.audio_channels), AV_SAMPLE_FMT_S32, format_desc_.audio_sample_rate,
 704                                                                                 0, nullptr), [](SwrContext* p){swr_free(&p);});
 705
 706                         if(!swr_)
 707                                 CASPAR_THROW_EXCEPTION(bad_alloc());
 708
 709                         THROW_ON_ERROR2(swr_init(swr_.get()), "[audio_decoder]");
 710                 }
 711
 712                 byte_vector buffer(48000);
 713
 714                 const uint8_t* in[]  = {reinterpret_cast<const uint8_t*>(frame.audio_data().data())};
 715                 uint8_t*       out[] = {buffer.data()};
 716
 717                 auto channel_samples = swr_convert(swr_.get(),
 718                                                                                    out, static_cast<int>(buffer.size()) / c->channels / av_get_bytes_per_sample(c->sample_fmt),
 719                                                                                    in, static_cast<int>(frame.audio_data().size()/format_desc_.audio_channels));
 720
 721                 buffer.resize(channel_samples * c->channels * av_get_bytes_per_sample(c->sample_fmt));
 722
 723                 return buffer;
 724         }
 725
 726         void check_space()
 727         {
 728                 auto space = boost::filesystem::space(boost::filesystem::path(filename_).parent_path());
 729                 if(space.available < 512*1000000)
 730                         CASPAR_THROW_EXCEPTION(file_write_error() << msg_info("out of space"));
 731         }
 732
 733         void encode(const core::const_frame& frame)
 734         {
 735                 try
 736                 {
 737                         if(frame_number_ % 25 == 0)
 738                                 check_space();
 739
 740                         caspar::timer frame_timer;
 741
 742                         encode_video_frame(frame);
 743                         encode_audio_frame(frame);
 744
 745                         graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);
 746                 }
 747                 catch(...)
 748                 {
 749                         lock(exception_mutex_, [&]
 750                         {
 751                                 exception_ = std::current_exception();
 752                         });
 753                 }
 754         }
 755 };
 756
 757 struct ffmpeg_consumer_proxy : public core::frame_consumer
 758 {
 759         const std::wstring                      filename_;
 760         const std::vector<option>       options_;
 761         const bool                                      separate_key_;
 762
 763         std::unique_ptr<ffmpeg_consumer> consumer_;
 764         std::unique_ptr<ffmpeg_consumer> key_only_consumer_;
 765
 766 public:
 767
 768         ffmpeg_consumer_proxy(const std::wstring& filename, const std::vector<option>& options, bool separate_key)
 769                 : filename_(filename)
 770                 , options_(options)
 771                 , separate_key_(separate_key)
 772         {
 773         }
 774
 775         void initialize(const core::video_format_desc& format_desc, int) override
 776         {
 777                 if(consumer_)
 778                         CASPAR_THROW_EXCEPTION(invalid_operation() << msg_info("Cannot reinitialize ffmpeg-consumer."));
 779
 780                 consumer_.reset(new ffmpeg_consumer(u8(filename_), format_desc, options_, false));
 781
 782                 if (separate_key_)
 783                 {
 784                         boost::filesystem::path fill_file(filename_);
 785                         auto without_extension = u16(fill_file.stem().string());
 786                         auto key_file = env::media_folder() + without_extension + L"_A" + u16(fill_file.extension().string());
 787
 788                         key_only_consumer_.reset(new ffmpeg_consumer(u8(key_file), format_desc, options_, true));
 789                 }
 790         }
 791
 792         int64_t presentation_frame_age_millis() const override
 793         {
 794                 return consumer_ ? static_cast<int64_t>(consumer_->current_encoding_delay_) : 0;
 795         }
 796
 797         std::future<bool> send(core::const_frame frame) override
 798         {
 799                 bool ready_for_frame = consumer_->ready_for_frame();
 800
 801                 if (ready_for_frame && separate_key_)
 802                         ready_for_frame = ready_for_frame && key_only_consumer_->ready_for_frame();
 803
 804                 if (ready_for_frame)
 805                 {
 806                         consumer_->send(frame);
 807
 808                         if (separate_key_)
 809                                 key_only_consumer_->send(frame);
 810                 }
 811                 else
 812                 {
 813                         consumer_->mark_dropped();
 814
 815                         if (separate_key_)
 816                                 key_only_consumer_->mark_dropped();
 817                 }
 818
 819                 return make_ready_future(true);
 820         }
 821
 822         std::wstring print() const override
 823         {
 824                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";
 825         }
 826
 827         std::wstring name() const override
 828         {
 829                 return L"file";
 830         }
 831
 832         boost::property_tree::wptree info() const override
 833         {
 834                 boost::property_tree::wptree info;
 835                 info.add(L"type", L"file");
 836                 info.add(L"filename", filename_);
 837                 info.add(L"separate_key", separate_key_);
 838                 return info;
 839         }
 840
 841         bool has_synchronization_clock() const override
 842         {
 843                 return false;
 844         }
 845
 846         int buffer_depth() const override
 847         {
 848                 return -1;
 849         }
 850
 851         int index() const override
 852         {
 853                 return 200;
 854         }
 855
 856         core::monitor::subject& monitor_output()
 857         {
 858                 return consumer_->monitor_output();
 859         }
 860 };
 861
 862 void describe_consumer(core::help_sink& sink, const core::help_repository& repo)
 863 {
 864         sink.short_description(L"Can record a channel to a file supported by FFMpeg.");
 865         sink.syntax(L"FILE [filename:string] {-[ffmpeg_param1:string] [value1:string] {-[ffmpeg_param2:string] [value2:string] {...}}} {[separate_key:SEPARATE_KEY]}");
 866         sink.para()->text(L"Can record a channel to a file supported by FFMpeg.");
 867         sink.definitions()
 868                 ->item(L"filename", L"The filename under the media folder including the extension (decides which kind of container format that will be used).")
 869                 ->item(L"ffmpeg_paramX", L"A parameter supported by FFMpeg. For example vcodec or acodec etc.")
 870                 ->item(L"separate_key", L"If defined will create two files simultaneously -- One for fill and one for key (_A will be appended).")
 871                 ;
 872         sink.para()->text(L"Examples:");
 873         sink.example(L">> ADD 1 FILE output.mov -vcodec dnxhd");
 874         sink.example(L">> ADD 1 FILE output.mov -vcodec prores");
 875         sink.example(L">> ADD 1 FILE output.mov -vcodec dvvideo");
 876         sink.example(L">> ADD 1 FILE output.mov - vcodec libx264 -preset ultrafast -tune fastdecode -crf 25");
 877         sink.example(L">> ADD 1 FILE output.mov -vcodec dnxhd SEPARATE_KEY", L"for creating output.mov with fill and output_A.mov with key/alpha");
 878 }
 879
 880 spl::shared_ptr<core::frame_consumer> create_consumer(
 881                 const std::vector<std::wstring>& params, core::interaction_sink*)
 882 {
 883         auto params2 = params;
 884         auto separate_key_it = std::find_if(params2.begin(), params2.end(), param_comparer(L"SEPARATE_KEY"));
 885         bool separate_key = false;
 886
 887         if (separate_key_it != params2.end())
 888         {
 889                 separate_key = true;
 890                 params2.erase(separate_key_it);
 891         }
 892
 893         auto str = std::accumulate(params2.begin(), params2.end(), std::wstring(), [](const std::wstring& lhs, const std::wstring& rhs) {return lhs + L" " + rhs;});
 894
 895         boost::wregex path_exp(LR"(\s*FILE(\s(?<PATH>.+\.[^\s]+))?.*)", boost::regex::icase);
 896
 897         boost::wsmatch path;
 898         if(!boost::regex_match(str, path, path_exp))
 899                 return core::frame_consumer::empty();
 900
 901         boost::wregex opt_exp(LR"(-((?<NAME>[^\s]+)\s+(?<VALUE>[^\s]+)))");
 902
 903         std::vector<option> options;
 904         for(boost::wsregex_iterator it(str.begin(), str.end(), opt_exp); it != boost::wsregex_iterator(); ++it)
 905         {
 906                 auto name  = u8(boost::trim_copy(boost::to_lower_copy((*it)["NAME"].str())));
 907                 auto value = u8(boost::trim_copy(boost::to_lower_copy((*it)["VALUE"].str())));
 908
 909                 if(value == "h264")
 910                         value = "libx264";
 911                 else if(value == "dvcpro")
 912                         value = "dvvideo";
 913
 914                 options.push_back(option(name, value));
 915         }
 916
 917         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + path["PATH"].str(), options, separate_key);
 918 }
 919
 920 spl::shared_ptr<core::frame_consumer> create_preconfigured_consumer(
 921                 const boost::property_tree::wptree& ptree, core::interaction_sink*)
 922 {
 923         auto filename           = ptree.get<std::wstring>(L"path");
 924         auto codec                      = ptree.get(L"vcodec", L"libx264");
 925         auto separate_key       = ptree.get(L"separate-key", false);
 926
 927         std::vector<option> options;
 928         options.push_back(option("vcodec", u8(codec)));
 929
 930         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + filename, options, separate_key);
 931 }
 932
 933 }}