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         CodecID                 vcodec;
 133         CodecID                 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         monitor::basic_subject                                          event_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         void subscribe(const monitor::observable::observer_ptr& o)
 392         {
 393                 event_subject_.subscribe(o);
 394         }
 395
 396         void unsubscribe(const monitor::observable::observer_ptr& o)
 397         {
 398                 event_subject_.unsubscribe(o);
 399         }
 400
 401 private:
 402         std::shared_ptr<AVStream> add_video_stream(std::vector<option>& options)
 403         {
 404                 if(output_format_.vcodec == CODEC_ID_NONE)
 405                         return nullptr;
 406
 407                 auto st = av_new_stream(oc_.get(), 0);
 408                 if (!st)
 409                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate video-stream.") << boost::errinfo_api_function("av_new_stream"));
 410
 411                 auto encoder = avcodec_find_encoder(output_format_.vcodec);
 412                 if (!encoder)
 413                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Codec not found."));
 414
 415                 auto c = st->codec;
 416
 417                 avcodec_get_context_defaults3(c, encoder);
 418
 419                 c->codec_id                     = output_format_.vcodec;
 420                 c->codec_type           = AVMEDIA_TYPE_VIDEO;
 421                 c->width                        = output_format_.width;
 422                 c->height                       = output_format_.height - output_format_.croptop - output_format_.cropbot;
 423                 c->time_base.den        = format_desc_.time_scale;
 424                 c->time_base.num        = format_desc_.duration;
 425                 c->gop_size                     = 25;
 426                 c->flags                   |= format_desc_.field_mode == core::field_mode::progressive ? 0 : (CODEC_FLAG_INTERLACED_ME | CODEC_FLAG_INTERLACED_DCT);
 427                 c->pix_fmt                      = c->pix_fmt != PIX_FMT_NONE ? c->pix_fmt : PIX_FMT_YUV420P;
 428
 429                 if(c->codec_id == CODEC_ID_PRORES)
 430                 {
 431                         c->bit_rate     = output_format_.width < 1280 ? 63*1000000 : 220*1000000;
 432                         c->pix_fmt      = PIX_FMT_YUV422P10;
 433                 }
 434                 else if(c->codec_id == CODEC_ID_DNXHD)
 435                 {
 436                         if(c->width < 1280 || c->height < 720)
 437                                 CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Unsupported video dimensions."));
 438
 439                         c->bit_rate     = 220*1000000;
 440                         c->pix_fmt      = PIX_FMT_YUV422P;
 441                 }
 442                 else if(c->codec_id == CODEC_ID_DVVIDEO)
 443                 {
 444                         c->width = c->height == 1280 ? 960  : c->width;
 445
 446                         if(format_desc_.format == core::video_format::ntsc)
 447                         {
 448                                 c->pix_fmt = PIX_FMT_YUV411P;
 449                                 output_format_.croptop = 2;
 450                                 output_format_.cropbot = 4;
 451                                 c->height                          = output_format_.height - output_format_.croptop - output_format_.cropbot;
 452                         }
 453                         else if(format_desc_.format == core::video_format::pal)
 454                                 c->pix_fmt = PIX_FMT_YUV420P;
 455                         else // dv50
 456                                 c->pix_fmt = PIX_FMT_YUV422P;
 457
 458                         if(format_desc_.duration == 1001)
 459                                 c->width = c->height == 1080 ? 1280 : c->width;
 460                         else
 461                                 c->width = c->height == 1080 ? 1440 : c->width;
 462                 }
 463                 else if(c->codec_id == CODEC_ID_H264)
 464                 {
 465                         c->pix_fmt = PIX_FMT_YUV420P;
 466                         av_opt_set(c->priv_data, "preset", "ultrafast", 0);
 467                         av_opt_set(c->priv_data, "tune",   "fastdecode",   0);
 468                         av_opt_set(c->priv_data, "crf",    "5",     0);
 469                 }
 470                 else if(c->codec_id == CODEC_ID_QTRLE)
 471                 {
 472                         c->pix_fmt = PIX_FMT_ARGB;
 473                 }
 474
 475                 boost::range::remove_erase_if(options, [&](const option& o)
 476                 {
 477                         return o.name.at(0) != 'a' && ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;
 478                 });
 479
 480                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)
 481                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 482
 483                 THROW_ON_ERROR2(tbb_avcodec_open(c, encoder), "[ffmpeg_consumer]");
 484
 485                 return std::shared_ptr<AVStream>(st, [](AVStream* st)
 486                 {
 487                         LOG_ON_ERROR2(tbb_avcodec_close(st->codec), "[ffmpeg_consumer]");
 488                         av_freep(&st->codec);
 489                         av_freep(&st);
 490                 });
 491         }
 492
 493         std::shared_ptr<AVStream> add_audio_stream(std::vector<option>& options)
 494         {
 495                 if(output_format_.acodec == CODEC_ID_NONE)
 496                         return nullptr;
 497
 498                 auto st = av_new_stream(oc_.get(), 1);
 499                 if(!st)
 500                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate audio-stream") << boost::errinfo_api_function("av_new_stream"));
 501
 502                 auto encoder = avcodec_find_encoder(output_format_.acodec);
 503                 if (!encoder)
 504                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));
 505
 506                 auto c = st->codec;
 507
 508                 avcodec_get_context_defaults3(c, encoder);
 509
 510                 c->codec_id                     = output_format_.acodec;
 511                 c->codec_type           = AVMEDIA_TYPE_AUDIO;
 512                 c->sample_rate          = 48000;
 513                 c->channels                     = 2;
 514                 c->sample_fmt           = AV_SAMPLE_FMT_S16;
 515                 c->time_base.num        = 1;
 516                 c->time_base.den        = c->sample_rate;
 517
 518                 if(output_format_.vcodec == CODEC_ID_FLV1)
 519                         c->sample_rate  = 44100;
 520
 521                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)
 522                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 523
 524                 boost::range::remove_erase_if(options, [&](const option& o)
 525                 {
 526                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;
 527                 });
 528
 529                 THROW_ON_ERROR2(avcodec_open(c, encoder), "[ffmpeg_consumer]");
 530
 531                 return std::shared_ptr<AVStream>(st, [](AVStream* st)
 532                 {
 533                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");;
 534                         av_freep(&st->codec);
 535                         av_freep(&st);
 536                 });
 537         }
 538
 539         void encode_video_frame(core::const_frame frame)
 540         {
 541                 if(!video_st_)
 542                         return;
 543
 544                 auto enc = video_st_->codec;
 545
 546                 auto av_frame                           = convert_video(frame, enc);
 547                 av_frame->interlaced_frame      = format_desc_.field_mode != core::field_mode::progressive;
 548                 av_frame->top_field_first       = format_desc_.field_mode == core::field_mode::upper;
 549                 av_frame->pts                           = frame_number_++;
 550
 551                 event_subject_ << monitor::event("frame")       % static_cast<int64_t>(frame_number_)
 552                                                                                                         % static_cast<int64_t>(std::numeric_limits<int64_t>::max());
 553
 554                 AVPacket pkt;
 555                 av_init_packet(&pkt);
 556                 pkt.data = nullptr;
 557                 pkt.size = 0;
 558
 559                 int got_packet = 0;
 560                 THROW_ON_ERROR2(avcodec_encode_video2(enc, &pkt, av_frame.get(), &got_packet), "[ffmpeg_consumer]");
 561                 std::shared_ptr<AVPacket> guard(&pkt, av_free_packet);
 562
 563                 if(!got_packet)
 564                         return;
 565
 566                 if (pkt.pts != AV_NOPTS_VALUE)
 567                         pkt.pts = av_rescale_q(pkt.pts, enc->time_base, video_st_->time_base);
 568                 if (pkt.dts != AV_NOPTS_VALUE)
 569                         pkt.dts = av_rescale_q(pkt.dts, enc->time_base, video_st_->time_base);
 570
 571                 pkt.stream_index = video_st_->index;
 572
 573                 THROW_ON_ERROR2(av_interleaved_write_frame(oc_.get(), &pkt), "[ffmpeg_consumer]");
 574         }
 575
 576         uint64_t get_channel_layout(AVCodecContext* dec)
 577         {
 578                 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);
 579                 return layout;
 580         }
 581
 582         void encode_audio_frame(core::const_frame frame)
 583         {
 584                 if(!audio_st_)
 585                         return;
 586
 587                 auto enc = audio_st_->codec;
 588
 589                 boost::push_back(audio_buffer_, convert_audio(frame, enc));
 590
 591                 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());
 592
 593                 while(audio_buffer_.size() >= frame_size)
 594                 {
 595                         std::shared_ptr<AVFrame> av_frame(avcodec_alloc_frame(), av_free);
 596                         avcodec_get_frame_defaults(av_frame.get());
 597                         av_frame->nb_samples = frame_size / (enc->channels * av_get_bytes_per_sample(enc->sample_fmt));
 598
 599                         AVPacket pkt;
 600                         av_init_packet(&pkt);
 601                         pkt.data = nullptr;
 602                         pkt.size = 0;
 603
 604                         THROW_ON_ERROR2(avcodec_fill_audio_frame(av_frame.get(), enc->channels, enc->sample_fmt, audio_buffer_.data(), frame_size, 1), "[ffmpeg_consumer]");
 605
 606                         int got_packet = 0;
 607                         THROW_ON_ERROR2(avcodec_encode_audio2(enc, &pkt, av_frame.get(), &got_packet), "[ffmpeg_consumer]");
 608                         std::shared_ptr<AVPacket> guard(&pkt, av_free_packet);
 609
 610                         audio_buffer_.erase(audio_buffer_.begin(), audio_buffer_.begin() + frame_size);
 611
 612                         if(!got_packet)
 613                                 return;
 614
 615                         if (pkt.pts != AV_NOPTS_VALUE)
 616                                 pkt.pts      = av_rescale_q(pkt.pts, enc->time_base, audio_st_->time_base);
 617                         if (pkt.dts != AV_NOPTS_VALUE)
 618                                 pkt.dts      = av_rescale_q(pkt.dts, enc->time_base, audio_st_->time_base);
 619                         if (pkt.duration > 0)
 620                                 pkt.duration = static_cast<int>(av_rescale_q(pkt.duration, enc->time_base, audio_st_->time_base));
 621
 622                         pkt.stream_index = audio_st_->index;
 623
 624                         THROW_ON_ERROR2(av_interleaved_write_frame(oc_.get(), &pkt), "[ffmpeg_consumer]");
 625                 }
 626         }
 627
 628         std::shared_ptr<AVFrame> convert_video(core::const_frame frame, AVCodecContext* c)
 629         {
 630                 if(!sws_)
 631                 {
 632                         sws_.reset(sws_getContext(format_desc_.width,
 633                                                                           format_desc_.height - output_format_.croptop  - output_format_.cropbot,
 634                                                                           PIX_FMT_BGRA,
 635                                                                           c->width,
 636                                                                           c->height,
 637                                                                           c->pix_fmt,
 638                                                                           SWS_BICUBIC, nullptr, nullptr, nullptr),
 639                                                 sws_freeContext);
 640                         if (sws_ == nullptr)
 641                                 CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Cannot initialize the conversion context"));
 642                 }
 643
 644                 // #in_frame
 645
 646                 std::shared_ptr<AVFrame> in_frame(avcodec_alloc_frame(), av_free);
 647
 648                 auto in_picture = reinterpret_cast<AVPicture*>(in_frame.get());
 649
 650                 if (key_only_)
 651                 {
 652                         key_picture_buf_.resize(frame.image_data().size());
 653                         in_picture->linesize[0] = format_desc_.width * 4;
 654                         in_picture->data[0] = key_picture_buf_.data();
 655
 656                         aligned_memshfl(in_picture->data[0], frame.image_data().begin(), frame.image_data().size(), 0x0F0F0F0F, 0x0B0B0B0B, 0x07070707, 0x03030303);
 657                 }
 658                 else
 659                 {
 660                         avpicture_fill(
 661                                         in_picture,
 662                                         const_cast<uint8_t*>(frame.image_data().begin()),
 663                                         PIX_FMT_BGRA,
 664                                         format_desc_.width,
 665                                         format_desc_.height - output_format_.croptop  - output_format_.cropbot);
 666                 }
 667
 668                 // crop-top
 669
 670                 for(int n = 0; n < 4; ++n)
 671                         in_frame->data[n] += in_frame->linesize[n] * output_format_.croptop;
 672
 673                 // #out_frame
 674
 675                 std::shared_ptr<AVFrame> out_frame(avcodec_alloc_frame(), av_free);
 676
 677                 av_image_fill_linesizes(out_frame->linesize, c->pix_fmt, c->width);
 678                 for(int n = 0; n < 4; ++n)
 679                         out_frame->linesize[n] += 32 - (out_frame->linesize[n] % 32); // align
 680
 681                 picture_buffer_.resize(av_image_fill_pointers(out_frame->data, c->pix_fmt, c->height, nullptr, out_frame->linesize));
 682                 av_image_fill_pointers(out_frame->data, c->pix_fmt, c->height, picture_buffer_.data(), out_frame->linesize);
 683
 684                 // #scale
 685
 686                 sws_scale(sws_.get(),
 687                                   in_frame->data,
 688                                   in_frame->linesize,
 689                                   0,
 690                                   format_desc_.height - output_format_.cropbot - output_format_.croptop,
 691                                   out_frame->data,
 692                                   out_frame->linesize);
 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                         BOOST_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                         boost::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         virtual void initialize(const core::video_format_desc& format_desc, int)
 776         {
 777                 if(consumer_)
 778                         BOOST_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::wpath 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         boost::unique_future<bool> send(core::const_frame frame) override
 793         {
 794                 bool ready_for_frame = consumer_->ready_for_frame();
 795
 796                 if (ready_for_frame && separate_key_)
 797                         ready_for_frame = ready_for_frame && key_only_consumer_->ready_for_frame();
 798
 799                 if (ready_for_frame)
 800                 {
 801                         consumer_->send(frame);
 802
 803                         if (separate_key_)
 804                                 key_only_consumer_->send(frame);
 805                 }
 806                 else
 807                 {
 808                         consumer_->mark_dropped();
 809
 810                         if (separate_key_)
 811                                 key_only_consumer_->mark_dropped();
 812                 }
 813
 814                 return caspar::wrap_as_future(true);
 815         }
 816
 817         std::wstring print() const override
 818         {
 819                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";
 820         }
 821
 822         std::wstring name() const override
 823         {
 824                 return L"file";
 825         }
 826
 827         boost::property_tree::wptree info() const override
 828         {
 829                 boost::property_tree::wptree info;
 830                 info.add(L"type", L"file");
 831                 info.add(L"filename", filename_);
 832                 info.add(L"separate_key", separate_key_);
 833                 return info;
 834         }
 835
 836         bool has_synchronization_clock() const override
 837         {
 838                 return false;
 839         }
 840
 841         int buffer_depth() const override
 842         {
 843                 return 1;
 844         }
 845
 846         int index() const override
 847         {
 848                 return 200;
 849         }
 850
 851         void subscribe(const monitor::observable::observer_ptr& o) override
 852         {
 853                 consumer_->subscribe(o);
 854         }
 855
 856         void unsubscribe(const monitor::observable::observer_ptr& o) override
 857         {
 858                 consumer_->unsubscribe(o);
 859         }
 860 };
 861 spl::shared_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)
 862 {
 863         auto params2 = params;
 864         auto separate_key_it = std::find(params2.begin(), params2.end(), L"SEPARATE_KEY");
 865         bool separate_key = false;
 866
 867         if (separate_key_it != params2.end())
 868         {
 869                 separate_key = true;
 870                 params2.erase(separate_key_it);
 871         }
 872
 873         auto str = std::accumulate(params2.begin(), params2.end(), std::wstring(), [](const std::wstring& lhs, const std::wstring& rhs) {return lhs + L" " + rhs;});
 874
 875         boost::wregex path_exp(L"\\s*FILE(\\s(?<PATH>.+\\.[^\\s]+))?.*", boost::regex::icase);
 876
 877         boost::wsmatch path;
 878         if(!boost::regex_match(str, path, path_exp))
 879                 return core::frame_consumer::empty();
 880
 881         boost::wregex opt_exp(L"-((?<NAME>[^\\s]+)\\s+(?<VALUE>[^\\s]+))");
 882
 883         std::vector<option> options;
 884         for(boost::wsregex_iterator it(str.begin(), str.end(), opt_exp); it != boost::wsregex_iterator(); ++it)
 885         {
 886                 auto name  = u8(boost::trim_copy(boost::to_lower_copy((*it)["NAME"].str())));
 887                 auto value = u8(boost::trim_copy(boost::to_lower_copy((*it)["VALUE"].str())));
 888
 889                 if(value == "h264")
 890                         value = "libx264";
 891                 else if(value == "dvcpro")
 892                         value = "dvvideo";
 893
 894                 options.push_back(option(name, value));
 895         }
 896
 897         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + path["PATH"].str(), options, separate_key);
 898 }
 899
 900 spl::shared_ptr<core::frame_consumer> create_consumer(const boost::property_tree::wptree& ptree)
 901 {
 902         auto filename           = ptree.get<std::wstring>(L"path");
 903         auto codec                      = ptree.get(L"vcodec", L"libx264");
 904         auto separate_key       = ptree.get(L"separate-key", false);
 905
 906         std::vector<option> options;
 907         options.push_back(option("vcodec", u8(codec)));
 908
 909         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + filename, options, separate_key);
 910 }
 911
 912 }}