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

   1 /*\r
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 * This file is part of CasparCG (www.casparcg.com).\r
   5 *\r
   6 * CasparCG is free software: you can redistribute it and/or modify\r
   7 * it under the terms of the GNU General Public License as published by\r
   8 * the Free Software Foundation, either version 3 of the License, or\r
   9 * (at your option) any later version.\r
  10 *\r
  11 * CasparCG is distributed in the hope that it will be useful,\r
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14 * GNU General Public License for more details.\r
  15 *\r
  16 * You should have received a copy of the GNU General Public License\r
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.\r
  18 *\r
  19 * Author: Robert Nagy, ronag89@gmail.com\r
  20 */\r
  21  \r
  22 #include "../StdAfx.h"\r
  23 \r
  24 #include "../ffmpeg_error.h"\r
  25 \r
  26 #include "ffmpeg_consumer.h"\r
  27 \r
  28 #include <core/frame/data_frame.h>\r
  29 #include <core/mixer/audio/audio_util.h>\r
  30 #include <core/consumer/frame_consumer.h>\r
  31 #include <core/video_format.h>\r
  32 \r
  33 #include <common/env.h>\r
  34 #include <common/concurrency/executor.h>\r
  35 #include <common/diagnostics/graph.h>\r
  36 #include <common/spl/memory.h>\r
  37 #include <common/utf.h>\r
  38 #include <common/param.h>\r
  39 \r
  40 #include <boost/algorithm/string.hpp>\r
  41 #include <boost/timer.hpp>\r
  42 #include <boost/property_tree/ptree.hpp>\r
  43 #include <boost/filesystem.hpp>\r
  44 \r
  45 #if defined(_MSC_VER)\r
  46 #pragma warning (push)\r
  47 #pragma warning (disable : 4244)\r
  48 #endif\r
  49 extern "C" \r
  50 {\r
  51         #define __STDC_CONSTANT_MACROS\r
  52         #define __STDC_LIMIT_MACROS\r
  53         #include <libavformat/avformat.h>\r
  54         #include <libswscale/swscale.h>\r
  55         #include <libavutil/opt.h>\r
  56 }\r
  57 #if defined(_MSC_VER)\r
  58 #pragma warning (pop)\r
  59 #endif\r
  60 \r
  61 namespace caspar { namespace ffmpeg {\r
  62         \r
  63 struct ffmpeg_consumer : boost::noncopyable\r
  64 {               \r
  65         const std::wstring                                              filename_;\r
  66                 \r
  67         const std::shared_ptr<AVFormatContext>  oc_;\r
  68         const core::video_format_desc                   format_desc_;\r
  69         \r
  70         const spl::shared_ptr<diagnostics::graph>               graph_;\r
  71         boost::timer                                                    frame_timer_;\r
  72         boost::timer                                                    write_timer_;\r
  73 \r
  74         executor                                                                executor_;\r
  75         executor                                                                file_write_executor_;\r
  76 \r
  77         // Audio\r
  78         std::shared_ptr<AVStream>                               audio_st_;\r
  79         \r
  80         // Video\r
  81         std::shared_ptr<AVStream>                               video_st_;\r
  82 \r
  83         std::vector<uint8_t>                                    video_outbuf_;\r
  84         std::vector<uint8_t>                                    picture_buf_;\r
  85         std::shared_ptr<SwsContext>                             sws_;\r
  86 \r
  87         int64_t                                                                 frame_number_;\r
  88         \r
  89 public:\r
  90         ffmpeg_consumer(const std::wstring& filename, const core::video_format_desc& format_desc, const std::wstring& codec, const std::vector<std::wstring>& options)\r
  91                 : filename_(filename)\r
  92                 , video_outbuf_(1920*1080*8)\r
  93                 , oc_(avformat_alloc_context(), av_free)\r
  94                 , format_desc_(format_desc)\r
  95                 , executor_(print())\r
  96                 , file_write_executor_(print() + L"/output")\r
  97                 , frame_number_(0)\r
  98         {\r
  99                 // TODO: Ask stakeholders about case where file already exists.\r
 100                 boost::filesystem::remove(boost::filesystem::path(env::media_folder() + filename)); // Delete the file if it exists\r
 101 \r
 102                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 103                 graph_->set_color("write-time", diagnostics::color(0.5f, 0.5f, 0.1f));\r
 104                 graph_->set_text(print());\r
 105                 diagnostics::register_graph(graph_);\r
 106 \r
 107                 executor_.set_capacity(8);\r
 108                 file_write_executor_.set_capacity(8);\r
 109 \r
 110                 oc_->oformat = av_guess_format(nullptr, u8(filename_).c_str(), nullptr);\r
 111                 if (!oc_->oformat)\r
 112                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not find suitable output format."));\r
 113                 \r
 114                 THROW_ON_ERROR2(av_set_parameters(oc_.get(), nullptr), "[ffmpeg_consumer]");\r
 115 \r
 116                 strcpy_s(oc_->filename, u8(filename_).c_str());\r
 117                 \r
 118                 auto video_codec = avcodec_find_encoder_by_name(u8(codec).c_str());\r
 119                 if(video_codec == nullptr)\r
 120                         BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info(codec));\r
 121 \r
 122                 //  Add the audio and video streams using the default format codecs     and initialize the codecs .\r
 123                 video_st_ = add_video_stream(video_codec->id, options);\r
 124                 audio_st_ = add_audio_stream();\r
 125                                 \r
 126                 dump_format(oc_.get(), 0, u8(filename_).c_str(), 1);\r
 127                  \r
 128                 // Open the output ffmpeg, if needed.\r
 129                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 130                         THROW_ON_ERROR2(avio_open(&oc_->pb, u8(filename_).c_str(), URL_WRONLY), "[ffmpeg_consumer]");\r
 131                                 \r
 132                 THROW_ON_ERROR2(av_write_header(oc_.get()), "[ffmpeg_consumer]");\r
 133         }\r
 134 \r
 135         ~ffmpeg_consumer()\r
 136         {    \r
 137                 executor_.wait();\r
 138                 executor_.stop();\r
 139                 executor_.join();\r
 140 \r
 141                 file_write_executor_.wait();\r
 142                 file_write_executor_.stop();\r
 143                 file_write_executor_.join();\r
 144                 \r
 145                 LOG_ON_ERROR2(av_write_trailer(oc_.get()), "[ffmpeg_consumer]");\r
 146                 \r
 147                 audio_st_.reset();\r
 148                 video_st_.reset();\r
 149                           \r
 150                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 151                         LOG_ON_ERROR2(avio_close(oc_->pb), "[ffmpeg_consumer]"); // Close the output ffmpeg.\r
 152         }\r
 153                         \r
 154         std::wstring print() const\r
 155         {\r
 156                 return L"ffmpeg[" + filename_ + L"]";\r
 157         }\r
 158 \r
 159         std::shared_ptr<AVStream> add_video_stream(enum CodecID codec_id, const std::vector<std::wstring>& options)\r
 160         { \r
 161                 auto st = av_new_stream(oc_.get(), 0);\r
 162                 if (!st)                \r
 163                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate video-stream") << boost::errinfo_api_function("av_new_stream"));               \r
 164 \r
 165                 auto encoder = avcodec_find_encoder(codec_id);\r
 166                 if (!encoder)\r
 167                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));\r
 168 \r
 169                 auto c = st->codec;\r
 170 \r
 171                 avcodec_get_context_defaults3(c, encoder);\r
 172                                 \r
 173                 c->codec_id                     = codec_id;\r
 174                 c->codec_type           = AVMEDIA_TYPE_VIDEO;\r
 175                 c->width                        = format_desc_.width;\r
 176                 c->height                       = format_desc_.height;\r
 177                 c->time_base.den        = format_desc_.time_scale;\r
 178                 c->time_base.num        = format_desc_.duration;\r
 179                 c->gop_size                     = 25;\r
 180                 c->flags                   |= format_desc_.field_mode == core::field_mode::progressive ? 0 : (CODEC_FLAG_INTERLACED_ME | CODEC_FLAG_INTERLACED_DCT);\r
 181 \r
 182                 if(c->codec_id == CODEC_ID_PRORES)\r
 183                 {                       \r
 184                         c->bit_rate     = format_desc_.width < 1280 ? 63*1000000 : 220*1000000;\r
 185                         c->pix_fmt      = PIX_FMT_YUV422P10;\r
 186                 }\r
 187                 else if(c->codec_id == CODEC_ID_DNXHD)\r
 188                 {\r
 189                         if(format_desc_.width < 1280 || format_desc_.height < 720)\r
 190                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("unsupported dimension"));\r
 191 \r
 192                         c->bit_rate     = 220*1000000;\r
 193                         c->pix_fmt      = PIX_FMT_YUV422P;\r
 194                 }\r
 195                 else if(c->codec_id == CODEC_ID_DVVIDEO)\r
 196                 {\r
 197                         c->bit_rate     = format_desc_.width < 1280 ? 50*1000000 : 100*1000000;\r
 198                         c->pix_fmt      = PIX_FMT_YUV422P;\r
 199                         \r
 200                         c->width = format_desc_.height == 1280 ? 960  : c->width;\r
 201 \r
 202                         if(format_desc_.duration == 1001)                       \r
 203                                 c->width = format_desc_.height == 1080 ? 1280 : c->width;                       \r
 204                         else\r
 205                                 c->width = format_desc_.height == 1080 ? 1440 : c->width;                       \r
 206                 }\r
 207                 else if(c->codec_id == CODEC_ID_H264)\r
 208                 {                          \r
 209                         c->pix_fmt = PIX_FMT_YUV420P;    \r
 210                         if(options.empty())\r
 211                         {\r
 212                                 av_opt_set(c->priv_data, "preset", "ultrafast", 0);\r
 213                                 av_opt_set(c->priv_data, "tune",   "fastdecode",   0);\r
 214                                 av_opt_set(c->priv_data, "crf",    "5",     0);\r
 215                         }\r
 216                 }\r
 217                 else if(c->codec_id == CODEC_ID_QTRLE)\r
 218                 {\r
 219                         c->pix_fmt = PIX_FMT_ARGB;\r
 220                 }\r
 221                 else\r
 222                 {\r
 223                         BOOST_THROW_EXCEPTION(invalid_argument() << msg_info("Unsupported output parameters."));\r
 224                 }\r
 225                 \r
 226                 c->max_b_frames = 0; // b-frames not supported.\r
 227 \r
 228                 for(size_t n = 0; n < options.size()/2; ++n)\r
 229                         THROW_ON_ERROR2(av_opt_set(c, u8(options[n*2+0]).c_str(), u8(options[n*2+1]).c_str(), AV_OPT_SEARCH_CHILDREN), "[ffmpeg_consumer]");\r
 230                 \r
 231                 if(oc_->oformat->flags & AVFMT_GLOBALHEADER)\r
 232                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 233                 \r
 234                 c->thread_count = boost::thread::hardware_concurrency();\r
 235                 THROW_ON_ERROR2(avcodec_open(c, encoder), "[ffmpeg_consumer]");\r
 236 \r
 237                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 238                 {\r
 239                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");\r
 240                         av_freep(&st->codec);\r
 241                         av_freep(&st);\r
 242                 });\r
 243         }\r
 244         \r
 245         std::shared_ptr<AVStream> add_audio_stream()\r
 246         {\r
 247                 auto st = av_new_stream(oc_.get(), 1);\r
 248                 if(!st)\r
 249                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate audio-stream") << boost::errinfo_api_function("av_new_stream"));               \r
 250 \r
 251                 st->codec->codec_id                     = CODEC_ID_PCM_S16LE;\r
 252                 st->codec->codec_type           = AVMEDIA_TYPE_AUDIO;\r
 253                 st->codec->sample_rate          = 48000;\r
 254                 st->codec->channels                     = 2;\r
 255                 st->codec->sample_fmt           = SAMPLE_FMT_S16;\r
 256                 \r
 257                 if(oc_->oformat->flags & AVFMT_GLOBALHEADER)\r
 258                         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 259                 \r
 260                 auto codec = avcodec_find_encoder(st->codec->codec_id);\r
 261                 if (!codec)\r
 262                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));\r
 263 \r
 264                 THROW_ON_ERROR2(avcodec_open(st->codec, codec), "[ffmpeg_consumer]");\r
 265 \r
 266                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 267                 {\r
 268                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");;\r
 269                         av_freep(&st->codec);\r
 270                         av_freep(&st);\r
 271                 });\r
 272         }\r
 273 \r
 274         std::shared_ptr<AVFrame> convert_video_frame(const spl::shared_ptr<const core::data_frame>& frame, AVCodecContext* c)\r
 275         {\r
 276                 if(!sws_) \r
 277                 {\r
 278                         sws_.reset(sws_getContext(format_desc_.width, format_desc_.height, PIX_FMT_BGRA, c->width, c->height, c->pix_fmt, SWS_BICUBIC, nullptr, nullptr, nullptr), sws_freeContext);\r
 279                         if (sws_ == nullptr) \r
 280                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Cannot initialize the conversion context"));\r
 281                 }\r
 282 \r
 283                 std::shared_ptr<AVFrame> av_frame(avcodec_alloc_frame(), av_free);\r
 284                 avpicture_fill(reinterpret_cast<AVPicture*>(av_frame.get()), const_cast<uint8_t*>(frame->image_data().begin()), PIX_FMT_BGRA, format_desc_.width, format_desc_.height);\r
 285                                 \r
 286                 std::shared_ptr<AVFrame> local_av_frame(avcodec_alloc_frame(), av_free);\r
 287                 picture_buf_.resize(avpicture_get_size(c->pix_fmt, format_desc_.width, format_desc_.height));\r
 288                 avpicture_fill(reinterpret_cast<AVPicture*>(local_av_frame.get()), picture_buf_.data(), c->pix_fmt, format_desc_.width, format_desc_.height);\r
 289 \r
 290                 sws_scale(sws_.get(), av_frame->data, av_frame->linesize, 0, c->height, local_av_frame->data, local_av_frame->linesize);\r
 291 \r
 292                 return local_av_frame;\r
 293         }\r
 294   \r
 295         std::shared_ptr<AVPacket> encode_video_frame(const spl::shared_ptr<const core::data_frame>& frame)\r
 296         { \r
 297                 auto c = video_st_->codec;\r
 298  \r
 299                 auto av_frame = convert_video_frame(frame, c);\r
 300                 av_frame->interlaced_frame      = format_desc_.field_mode != core::field_mode::progressive;\r
 301                 av_frame->top_field_first       = format_desc_.field_mode == core::field_mode::upper;\r
 302                 av_frame->pts                           = frame_number_++;\r
 303                 \r
 304                 int out_size = THROW_ON_ERROR2(avcodec_encode_video(c, video_outbuf_.data(), static_cast<int>(video_outbuf_.size()), av_frame.get()), "[ffmpeg_consumer]");\r
 305                 if(out_size > 0)\r
 306                 {\r
 307                         spl::shared_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 308                         {\r
 309                                 av_free_packet(p);\r
 310                                 delete p;\r
 311                         });\r
 312                         av_init_packet(pkt.get());\r
 313  \r
 314                         if (c->coded_frame->pts != AV_NOPTS_VALUE)\r
 315                                 pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, video_st_->time_base);\r
 316 \r
 317                         if(c->coded_frame->key_frame)\r
 318                                 pkt->flags |= AV_PKT_FLAG_KEY;\r
 319 \r
 320                         pkt->stream_index       = video_st_->index;\r
 321                         pkt->data                       = video_outbuf_.data();\r
 322                         pkt->size                       = out_size;\r
 323  \r
 324                         av_dup_packet(pkt.get());\r
 325                         return pkt;\r
 326                 }       \r
 327                 return nullptr;\r
 328         }\r
 329                 \r
 330         std::shared_ptr<AVPacket> encode_audio_frame(const spl::shared_ptr<const core::data_frame>& frame)\r
 331         {                       \r
 332                 auto c = audio_st_->codec;\r
 333 \r
 334                 auto audio_data = core::audio_32_to_16(frame->audio_data());\r
 335                 \r
 336                 spl::shared_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 337                 {\r
 338                         av_free_packet(p);\r
 339                         delete p;\r
 340                 });\r
 341                 av_init_packet(pkt.get());\r
 342                 \r
 343                 if (c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE)\r
 344                         pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, audio_st_->time_base);\r
 345 \r
 346                 pkt->flags               |= AV_PKT_FLAG_KEY;\r
 347                 pkt->stream_index = audio_st_->index;\r
 348                 pkt->size                = static_cast<int>(audio_data.size()*2);\r
 349                 pkt->data                = reinterpret_cast<uint8_t*>(audio_data.data());\r
 350                 \r
 351                 av_dup_packet(pkt.get());\r
 352                 return pkt;\r
 353         }\r
 354                  \r
 355         void send(const spl::shared_ptr<const core::data_frame>& frame)\r
 356         {\r
 357                 executor_.begin_invoke([=]\r
 358                 {               \r
 359                         frame_timer_.restart();\r
 360 \r
 361                         auto video = encode_video_frame(frame);\r
 362                         auto audio = encode_audio_frame(frame);\r
 363 \r
 364                         graph_->set_value("frame-time", frame_timer_.elapsed()*format_desc_.fps*0.5);\r
 365                         \r
 366                         file_write_executor_.begin_invoke([=]\r
 367                         {\r
 368                                 write_timer_.restart();\r
 369 \r
 370                                 if(video)\r
 371                                         av_write_frame(oc_.get(), video.get());\r
 372                                 if(audio)\r
 373                                         av_write_frame(oc_.get(), audio.get());\r
 374 \r
 375                                 graph_->set_value("write-time", write_timer_.elapsed()*format_desc_.fps*0.5);\r
 376                         });\r
 377                 });\r
 378         }\r
 379 };\r
 380 \r
 381 struct ffmpeg_consumer_proxy : public core::frame_consumer\r
 382 {\r
 383         const std::wstring                              filename_;\r
 384         const bool                                              key_only_;\r
 385         const std::wstring                              codec_;\r
 386         const std::vector<std::wstring> options_;\r
 387 \r
 388         std::unique_ptr<ffmpeg_consumer> consumer_;\r
 389 \r
 390 public:\r
 391 \r
 392         ffmpeg_consumer_proxy(const std::wstring& filename, bool key_only, const std::wstring& codec, const std::vector<std::wstring>& options)\r
 393                 : filename_(filename)\r
 394                 , key_only_(key_only)\r
 395                 , codec_(std::move(codec))\r
 396                 , options_(options)\r
 397         {\r
 398         }\r
 399         \r
 400         virtual void initialize(const core::video_format_desc& format_desc, int)\r
 401         {\r
 402                 consumer_.reset();\r
 403                 consumer_.reset(new ffmpeg_consumer(filename_, format_desc, codec_, options_));\r
 404         }\r
 405         \r
 406         virtual bool send(const spl::shared_ptr<const core::data_frame>& frame) override\r
 407         {\r
 408                 consumer_->send(frame);\r
 409                 return true;\r
 410         }\r
 411         \r
 412         virtual std::wstring print() const override\r
 413         {\r
 414                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";\r
 415         }\r
 416 \r
 417         virtual std::wstring name() const override\r
 418         {\r
 419                 return L"file";\r
 420         }\r
 421 \r
 422         virtual boost::property_tree::wptree info() const override\r
 423         {\r
 424                 boost::property_tree::wptree info;\r
 425                 info.add(L"type", L"file");\r
 426                 info.add(L"key-only", key_only_);\r
 427                 info.add(L"filename", filename_);\r
 428                 info.add(L"vcodec", codec_);\r
 429                 return info;\r
 430         }\r
 431                 \r
 432         virtual bool has_synchronization_clock() const override\r
 433         {\r
 434                 return false;\r
 435         }\r
 436 \r
 437         virtual int buffer_depth() const override\r
 438         {\r
 439                 return 1;\r
 440         }\r
 441 \r
 442         virtual int index() const override\r
 443         {\r
 444                 return 200;\r
 445         }\r
 446 };      \r
 447 \r
 448 spl::shared_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)\r
 449 {\r
 450         if(params.size() < 1 || params[0] != L"FILE")\r
 451                 return core::frame_consumer::empty();\r
 452         \r
 453         auto filename   = (params.size() > 1 ? params[1] : L"");\r
 454         bool key_only   = get_param(L"KEY_ONLY", params, false);\r
 455         auto codec              = get_param(L"-VCODEC", params,  get_param(L"CODEC", params, L"libx264"));\r
 456 \r
 457         std::vector<std::wstring> options;\r
 458         auto opt_it = std::find(params.begin(), params.end(), L"-VCODEC");\r
 459 \r
 460         if(std::distance(opt_it, params.end()) > 2)\r
 461         {\r
 462                 std::advance(opt_it, 2);\r
 463                 while(opt_it != params.end())\r
 464                 {\r
 465                         auto str = *opt_it++;\r
 466                         if(str.size() > 0 && str.at(0) == L'-')\r
 467                                 str = str.substr(1);\r
 468                         options.push_back(boost::to_lower_copy(str));           \r
 469                 }\r
 470         }\r
 471                 \r
 472         if(codec == L"H264")\r
 473                 codec = L"libx264";\r
 474 \r
 475         if(codec == L"DVCPRO")\r
 476                 codec = L"dvvideo";\r
 477 \r
 478         codec = boost::to_lower_copy(codec);\r
 479         \r
 480         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + filename, key_only, codec, options);\r
 481 }\r
 482 \r
 483 spl::shared_ptr<core::frame_consumer> create_consumer(const boost::property_tree::wptree& ptree)\r
 484 {\r
 485         auto filename   = ptree.get<std::wstring>(L"path");\r
 486         auto key_only   = ptree.get(L"key-only", false);\r
 487         auto codec              = ptree.get(L"vcodec", L"libx264");\r
 488         \r
 489         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + filename, key_only, codec, std::vector<std::wstring>());\r
 490 }\r
 491 \r
 492 }}\r