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/mixer/read_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/concurrency/executor.h>\r
  34 #include <common/diagnostics/graph.h>\r
  35 #include <common/utility/string.h>\r
  36 #include <common/env.h>\r
  37 \r
  38 #include <boost/algorithm/string.hpp>\r
  39 #include <boost/timer.hpp>\r
  40 #include <boost/property_tree/ptree.hpp>\r
  41 \r
  42 #include <tbb/cache_aligned_allocator.h>\r
  43 #include <tbb/parallel_invoke.h>\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::string                                               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 safe_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::string& filename, const core::video_format_desc& format_desc, const std::string& codec, const std::string& 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::filesystem2::remove(boost::filesystem2::wpath(env::media_folder() + widen(filename))); // Delete the file if it exists\r
 101 \r
 102                 graph_->add_guide("frame-time", 0.5);\r
 103                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 104                 graph_->set_color("write-time", diagnostics::color(0.5f, 0.5f, 0.1f));\r
 105                 graph_->set_text(print());\r
 106                 diagnostics::register_graph(graph_);\r
 107 \r
 108                 executor_.set_capacity(8);\r
 109                 file_write_executor_.set_capacity(8);\r
 110 \r
 111                 oc_->oformat = av_guess_format(nullptr, filename_.c_str(), nullptr);\r
 112                 if (!oc_->oformat)\r
 113                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not find suitable output format."));\r
 114                 \r
 115                 THROW_ON_ERROR2(av_set_parameters(oc_.get(), nullptr), "[ffmpeg_consumer]");\r
 116 \r
 117                 strcpy_s(oc_->filename, filename_.c_str());\r
 118                 \r
 119                 auto video_codec = avcodec_find_encoder_by_name(codec.c_str());\r
 120                 if(video_codec == nullptr)\r
 121                         BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info(codec));\r
 122 \r
 123                 //  Add the audio and video streams using the default format codecs     and initialize the codecs .\r
 124                 video_st_ = add_video_stream(video_codec->id, options);\r
 125                 audio_st_ = add_audio_stream();\r
 126                                 \r
 127                 dump_format(oc_.get(), 0, filename_.c_str(), 1);\r
 128                  \r
 129                 // Open the output ffmpeg, if needed.\r
 130                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 131                         THROW_ON_ERROR2(avio_open(&oc_->pb, filename_.c_str(), URL_WRONLY), "[ffmpeg_consumer]");\r
 132                                 \r
 133                 THROW_ON_ERROR2(av_write_header(oc_.get()), "[ffmpeg_consumer]");\r
 134 \r
 135                 CASPAR_LOG(info) << print() << L" Successfully Initialized.";   \r
 136         }\r
 137 \r
 138         ~ffmpeg_consumer()\r
 139         {    \r
 140                 executor_.stop();\r
 141                 executor_.join();\r
 142 \r
 143                 file_write_executor_.stop();\r
 144                 file_write_executor_.join();\r
 145                 \r
 146                 LOG_ON_ERROR2(av_write_trailer(oc_.get()), "[ffmpeg_consumer]");\r
 147                 \r
 148                 audio_st_.reset();\r
 149                 video_st_.reset();\r
 150                           \r
 151                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 152                         LOG_ON_ERROR2(avio_close(oc_->pb), "[ffmpeg_consumer]"); // Close the output ffmpeg.\r
 153 \r
 154                 CASPAR_LOG(info) << print() << L" Successfully Uninitialized."; \r
 155         }\r
 156                         \r
 157         std::wstring print() const\r
 158         {\r
 159                 return L"ffmpeg[" + widen(filename_) + L"]";\r
 160         }\r
 161 \r
 162         std::shared_ptr<AVStream> add_video_stream(enum CodecID codec_id, const std::string& options)\r
 163         { \r
 164                 auto st = av_new_stream(oc_.get(), 0);\r
 165                 if (!st)                \r
 166                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate video-stream") << boost::errinfo_api_function("av_new_stream"));               \r
 167 \r
 168                 auto encoder = avcodec_find_encoder(codec_id);\r
 169                 if (!encoder)\r
 170                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));\r
 171 \r
 172                 auto c = st->codec;\r
 173 \r
 174                 avcodec_get_context_defaults3(c, encoder);\r
 175                                 \r
 176                 c->codec_id                     = codec_id;\r
 177                 c->codec_type           = AVMEDIA_TYPE_VIDEO;\r
 178                 c->width                        = format_desc_.width;\r
 179                 c->height                       = format_desc_.height;\r
 180                 c->time_base.den        = format_desc_.time_scale;\r
 181                 c->time_base.num        = format_desc_.duration;\r
 182                 c->gop_size                     = 25;\r
 183                 c->flags                   |= format_desc_.field_mode == core::field_mode::progressive ? 0 : (CODEC_FLAG_INTERLACED_ME | CODEC_FLAG_INTERLACED_DCT);\r
 184 \r
 185                 if(c->codec_id == CODEC_ID_PRORES)\r
 186                 {                       \r
 187                         c->bit_rate     = format_desc_.width < 1280 ? 63*1000000 : 220*1000000;\r
 188                         c->pix_fmt      = PIX_FMT_YUV422P10;\r
 189                         THROW_ON_ERROR2(av_set_options_string(c->priv_data, options.c_str(), "=", ":"), "[ffmpeg_consumer]");\r
 190                 }\r
 191                 else if(c->codec_id == CODEC_ID_DNXHD)\r
 192                 {\r
 193                         if(format_desc_.width < 1280 || format_desc_.height < 720)\r
 194                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("unsupported dimension"));\r
 195 \r
 196                         c->bit_rate     = 220*1000000;\r
 197                         c->pix_fmt      = PIX_FMT_YUV422P;\r
 198                         \r
 199                         THROW_ON_ERROR2(av_set_options_string(c->priv_data, options.c_str(), "=", ":"), "[ffmpeg_consumer]");\r
 200                 }\r
 201                 else if(c->codec_id == CODEC_ID_DVVIDEO)\r
 202                 {\r
 203                         c->bit_rate     = format_desc_.width < 1280 ? 50*1000000 : 100*1000000;\r
 204                         c->pix_fmt      = PIX_FMT_YUV422P;\r
 205                         \r
 206                         c->width = format_desc_.height == 1280 ? 960  : c->width;\r
 207 \r
 208                         if(format_desc_.duration == 1001)                       \r
 209                                 c->width = format_desc_.height == 1080 ? 1280 : c->width;                       \r
 210                         else\r
 211                                 c->width = format_desc_.height == 1080 ? 1440 : c->width;\r
 212                         \r
 213                         THROW_ON_ERROR2(av_set_options_string(c->priv_data, options.c_str(), "=", ":"), "[ffmpeg_consumer]");\r
 214                 }\r
 215                 else if(c->codec_id == CODEC_ID_H264)\r
 216                 {                          \r
 217                         c->pix_fmt = PIX_FMT_YUV420P;    \r
 218                         av_opt_set(c->priv_data, "preset", "ultrafast", 0);\r
 219                         av_opt_set(c->priv_data, "tune",   "film",   0);\r
 220                         av_opt_set(c->priv_data, "crf",    "5",     0);\r
 221                         \r
 222                         THROW_ON_ERROR2(av_set_options_string(c->priv_data, options.c_str(), "=", ":"), "[ffmpeg_consumer]");\r
 223                 }\r
 224                 else\r
 225                 {\r
 226                         THROW_ON_ERROR2(av_set_options_string(c->priv_data, options.c_str(), "=", ":"), "[ffmpeg_consumer]");\r
 227                         CASPAR_LOG(warning) << " Potentially unsupported output parameters.";\r
 228                 }\r
 229                 \r
 230                 c->max_b_frames = 0; // b-franes not supported.\r
 231 \r
 232                 if(oc_->oformat->flags & AVFMT_GLOBALHEADER)\r
 233                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 234                 \r
 235                 c->thread_count = boost::thread::hardware_concurrency();\r
 236                 THROW_ON_ERROR2(avcodec_open(c, encoder), "[ffmpeg_consumer]");\r
 237 \r
 238                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 239                 {\r
 240                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");\r
 241                         av_freep(&st->codec);\r
 242                         av_freep(&st);\r
 243                 });\r
 244         }\r
 245         \r
 246         std::shared_ptr<AVStream> add_audio_stream()\r
 247         {\r
 248                 auto st = av_new_stream(oc_.get(), 1);\r
 249                 if(!st)\r
 250                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate audio-stream") << boost::errinfo_api_function("av_new_stream"));               \r
 251 \r
 252                 st->codec->codec_id                     = CODEC_ID_PCM_S16LE;\r
 253                 st->codec->codec_type           = AVMEDIA_TYPE_AUDIO;\r
 254                 st->codec->sample_rate          = 48000;\r
 255                 st->codec->channels                     = 2;\r
 256                 st->codec->sample_fmt           = SAMPLE_FMT_S16;\r
 257                 \r
 258                 if(oc_->oformat->flags & AVFMT_GLOBALHEADER)\r
 259                         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 260                 \r
 261                 auto codec = avcodec_find_encoder(st->codec->codec_id);\r
 262                 if (!codec)\r
 263                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));\r
 264 \r
 265                 THROW_ON_ERROR2(avcodec_open(st->codec, codec), "[ffmpeg_consumer]");\r
 266 \r
 267                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 268                 {\r
 269                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");;\r
 270                         av_freep(&st->codec);\r
 271                         av_freep(&st);\r
 272                 });\r
 273         }\r
 274 \r
 275         std::shared_ptr<AVFrame> convert_video_frame(const safe_ptr<core::read_frame>& frame, AVCodecContext* c)\r
 276         {\r
 277                 if(!sws_) \r
 278                 {\r
 279                         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
 280                         if (sws_ == nullptr) \r
 281                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Cannot initialize the conversion context"));\r
 282                 }\r
 283 \r
 284                 std::shared_ptr<AVFrame> av_frame(avcodec_alloc_frame(), av_free);\r
 285                 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
 286                                 \r
 287                 std::shared_ptr<AVFrame> local_av_frame(avcodec_alloc_frame(), av_free);\r
 288                 picture_buf_.resize(avpicture_get_size(c->pix_fmt, format_desc_.width, format_desc_.height));\r
 289                 avpicture_fill(reinterpret_cast<AVPicture*>(local_av_frame.get()), picture_buf_.data(), c->pix_fmt, format_desc_.width, format_desc_.height);\r
 290 \r
 291                 sws_scale(sws_.get(), av_frame->data, av_frame->linesize, 0, c->height, local_av_frame->data, local_av_frame->linesize);\r
 292 \r
 293                 return local_av_frame;\r
 294         }\r
 295   \r
 296         std::shared_ptr<AVPacket> encode_video_frame(const safe_ptr<core::read_frame>& frame)\r
 297         { \r
 298                 auto c = video_st_->codec;\r
 299  \r
 300                 auto av_frame = convert_video_frame(frame, c);\r
 301                 av_frame->interlaced_frame      = format_desc_.field_mode != core::field_mode::progressive;\r
 302                 av_frame->top_field_first       = format_desc_.field_mode == core::field_mode::upper;\r
 303                 av_frame->pts                           = frame_number_++;\r
 304 \r
 305                 int out_size = THROW_ON_ERROR2(avcodec_encode_video(c, video_outbuf_.data(), video_outbuf_.size(), av_frame.get()), "[ffmpeg_consumer]");\r
 306                 if(out_size > 0)\r
 307                 {\r
 308                         safe_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 309                         {\r
 310                                 av_free_packet(p);\r
 311                                 delete p;\r
 312                         });\r
 313                         av_init_packet(pkt.get());\r
 314  \r
 315                         if (c->coded_frame->pts != AV_NOPTS_VALUE)\r
 316                                 pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, video_st_->time_base);\r
 317 \r
 318                         if(c->coded_frame->key_frame)\r
 319                                 pkt->flags |= AV_PKT_FLAG_KEY;\r
 320 \r
 321                         pkt->stream_index       = video_st_->index;\r
 322                         pkt->data                       = video_outbuf_.data();\r
 323                         pkt->size                       = out_size;\r
 324  \r
 325                         av_dup_packet(pkt.get());\r
 326                         return pkt;\r
 327                 }       \r
 328                 return nullptr;\r
 329         }\r
 330                 \r
 331         std::shared_ptr<AVPacket> encode_audio_frame(const safe_ptr<core::read_frame>& frame)\r
 332         {                       \r
 333                 auto c = audio_st_->codec;\r
 334 \r
 335                 auto audio_data = core::audio_32_to_16(frame->audio_data());\r
 336                 \r
 337                 safe_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 338                 {\r
 339                         av_free_packet(p);\r
 340                         delete p;\r
 341                 });\r
 342                 av_init_packet(pkt.get());\r
 343                 \r
 344                 if (c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE)\r
 345                         pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, audio_st_->time_base);\r
 346 \r
 347                 pkt->flags               |= AV_PKT_FLAG_KEY;\r
 348                 pkt->stream_index = audio_st_->index;\r
 349                 pkt->size                = audio_data.size()*2;\r
 350                 pkt->data                = reinterpret_cast<uint8_t*>(audio_data.data());\r
 351                 \r
 352                 av_dup_packet(pkt.get());\r
 353                 return pkt;\r
 354         }\r
 355                  \r
 356         void send(const safe_ptr<core::read_frame>& frame)\r
 357         {\r
 358                 executor_.begin_invoke([=]\r
 359                 {               \r
 360                         frame_timer_.restart();\r
 361 \r
 362                         auto video = encode_video_frame(frame);\r
 363                         auto audio = encode_audio_frame(frame);\r
 364 \r
 365                         graph_->update_value("frame-time", frame_timer_.elapsed()*format_desc_.fps*0.5);\r
 366                         \r
 367                         file_write_executor_.begin_invoke([=]\r
 368                         {\r
 369                                 write_timer_.restart();\r
 370 \r
 371                                 if(video)\r
 372                                         av_write_frame(oc_.get(), video.get());\r
 373                                 if(audio)\r
 374                                         av_write_frame(oc_.get(), audio.get());\r
 375 \r
 376                                 graph_->update_value("write-time", write_timer_.elapsed()*format_desc_.fps*0.5);\r
 377                         });\r
 378                 });\r
 379         }\r
 380 };\r
 381 \r
 382 struct ffmpeg_consumer_proxy : public core::frame_consumer\r
 383 {\r
 384         const std::wstring      filename_;\r
 385         const bool                      key_only_;\r
 386         const std::wstring      codec_;\r
 387         const std::wstring      options_;\r
 388 \r
 389         std::unique_ptr<ffmpeg_consumer> consumer_;\r
 390 \r
 391 public:\r
 392 \r
 393         ffmpeg_consumer_proxy(const std::wstring& filename, bool key_only, const std::wstring codec, const std::wstring& options)\r
 394                 : filename_(filename)\r
 395                 , key_only_(key_only)\r
 396                 , codec_(boost::to_lower_copy(codec))\r
 397                 , options_(options)\r
 398         {\r
 399         }\r
 400         \r
 401         virtual void initialize(const core::video_format_desc& format_desc, int)\r
 402         {\r
 403                 consumer_.reset();\r
 404                 consumer_.reset(new ffmpeg_consumer(narrow(filename_), format_desc, narrow(codec_), narrow(options_)));\r
 405         }\r
 406         \r
 407         virtual bool send(const safe_ptr<core::read_frame>& frame) override\r
 408         {\r
 409                 consumer_->send(frame);\r
 410                 return true;\r
 411         }\r
 412         \r
 413         virtual std::wstring print() const override\r
 414         {\r
 415                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";\r
 416         }\r
 417 \r
 418         virtual boost::property_tree::wptree info() const override\r
 419         {\r
 420                 boost::property_tree::wptree info;\r
 421                 info.add(L"type", L"ffmpeg-consumer");\r
 422                 info.add(L"key-only", key_only_);\r
 423                 info.add(L"filename", filename_);\r
 424                 info.add(L"codec", codec_);\r
 425                 info.add(L"options", options_);\r
 426                 return info;\r
 427         }\r
 428                 \r
 429         virtual bool has_synchronization_clock() const override\r
 430         {\r
 431                 return false;\r
 432         }\r
 433 \r
 434         virtual size_t buffer_depth() const override\r
 435         {\r
 436                 return 1;\r
 437         }\r
 438 \r
 439         virtual int index() const override\r
 440         {\r
 441                 return 200;\r
 442         }\r
 443 };      \r
 444 \r
 445 safe_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)\r
 446 {\r
 447         if(params.size() < 1 || params[0] != L"FILE")\r
 448                 return core::frame_consumer::empty();\r
 449         \r
 450         auto filename = (params.size() > 1 ? params[1] : L"");\r
 451 \r
 452         bool key_only = std::find(params.begin(), params.end(), L"KEY_ONLY") != params.end();\r
 453 \r
 454         std::wstring codec = L"libx264";\r
 455         auto codec_it = std::find(params.begin(), params.end(), L"CODEC");\r
 456         if(codec_it != params.end() && codec_it++ != params.end())\r
 457                 codec = *codec_it;\r
 458 \r
 459         if(codec == L"H264")\r
 460                 codec = L"libx264";\r
 461 \r
 462         if(codec == L"DVCPRO")\r
 463                 codec = L"dvvideo";\r
 464 \r
 465         std::wstring options = L"";\r
 466         auto options_it = std::find(params.begin(), params.end(), L"OPTIONS");\r
 467         if(options_it != params.end() && options_it++ != params.end())\r
 468                 options = *options_it;\r
 469 \r
 470         return make_safe<ffmpeg_consumer_proxy>(env::media_folder() + filename, key_only, codec, boost::to_lower_copy(options));\r
 471 }\r
 472 \r
 473 safe_ptr<core::frame_consumer> create_consumer(const boost::property_tree::ptree& ptree)\r
 474 {\r
 475         std::string filename = ptree.get<std::string>("path");\r
 476         auto key_only            = ptree.get("key-only", false);\r
 477         auto codec                       = ptree.get("codec", "libx264");\r
 478         auto options             = ptree.get("options", "");\r
 479         \r
 480         return make_safe<ffmpeg_consumer_proxy>(env::media_folder() + widen(filename), key_only, widen(codec), widen(options));\r
 481 }\r
 482 \r
 483 }}\r