git.sesse.net Git - casparcg/blob - modules/ffmpeg/producer/ffmpeg_producer.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_producer.h"\r
  25 \r
  26 #include "../ffmpeg_error.h"\r
  27 \r
  28 #include "muxer/frame_muxer.h"\r
  29 #include "input/input.h"\r
  30 #include "util/util.h"\r
  31 #include "audio/audio_decoder.h"\r
  32 #include "video/video_decoder.h"\r
  33 \r
  34 #include <common/env.h>\r
  35 #include <common/log.h>\r
  36 #include <common/param.h>\r
  37 #include <common/diagnostics/graph.h>\r
  38 #include <common/future.h>\r
  39 \r
  40 #include <core/video_format.h>\r
  41 #include <core/producer/frame_producer.h>\r
  42 #include <core/frame/frame_factory.h>\r
  43 #include <core/frame/draw_frame.h>\r
  44 #include <core/frame/frame_transform.h>\r
  45 #include <core/monitor/monitor.h>\r
  46 \r
  47 #include <boost/algorithm/string.hpp>\r
  48 #include <common/assert.h>\r
  49 #include <boost/assign.hpp>\r
  50 #include <boost/timer.hpp>\r
  51 #include <boost/foreach.hpp>\r
  52 #include <boost/filesystem.hpp>\r
  53 #include <boost/range/algorithm/find_if.hpp>\r
  54 #include <boost/range/algorithm/find.hpp>\r
  55 #include <boost/property_tree/ptree.hpp>\r
  56 #include <boost/regex.hpp>\r
  57 #include <boost/thread/future.hpp>\r
  58 \r
  59 #include <tbb/parallel_invoke.h>\r
  60 \r
  61 #include <limits>\r
  62 #include <memory>\r
  63 #include <queue>\r
  64 \r
  65 namespace caspar { namespace ffmpeg {\r
  66                                 \r
  67 struct ffmpeg_producer : public core::frame_producer\r
  68 {\r
  69         monitor::basic_subject                                                  event_subject_;\r
  70         const std::wstring                                                              filename_;\r
  71         \r
  72         const spl::shared_ptr<diagnostics::graph>               graph_;\r
  73                                         \r
  74         const spl::shared_ptr<core::frame_factory>              frame_factory_;\r
  75         const core::video_format_desc                                   format_desc_;\r
  76 \r
  77         input                                                                                   input_; \r
  78         std::unique_ptr<video_decoder>                                  video_decoder_;\r
  79         std::unique_ptr<audio_decoder>                                  audio_decoder_; \r
  80         std::unique_ptr<frame_muxer>                                    muxer_;\r
  81 \r
  82         const double                                                                    fps_;\r
  83         const uint32_t                                                                  start_;\r
  84                 \r
  85         int64_t                                                                                 frame_number_;\r
  86 \r
  87         core::draw_frame                                                                last_frame_;\r
  88         \r
  89 public:\r
  90         explicit ffmpeg_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, \r
  91                                                          const core::video_format_desc& format_desc, \r
  92                                                          const std::wstring& filename, \r
  93                                                          const std::wstring& filter, \r
  94                                                          bool loop, \r
  95                                                          uint32_t start, \r
  96                                                          uint32_t length) \r
  97                 : filename_(filename)\r
  98                 , frame_factory_(frame_factory)         \r
  99                 , format_desc_(format_desc)\r
 100                 , input_(graph_, filename_, loop, start, length)\r
 101                 , fps_(read_fps(*input_.context(), format_desc_.fps))\r
 102                 , start_(start)\r
 103                 , frame_number_(0)\r
 104                 , last_frame_(core::draw_frame::empty())\r
 105         {\r
 106                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 107                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));   \r
 108                 diagnostics::register_graph(graph_);\r
 109                 \r
 110                 try\r
 111                 {\r
 112                         video_decoder_.reset(new video_decoder(input_.context()));\r
 113                         video_decoder_->subscribe(event_subject_);\r
 114                         CASPAR_LOG(info) << print() << L" " << video_decoder_->print();\r
 115                 }\r
 116                 catch(averror_stream_not_found&)\r
 117                 {\r
 118                         //CASPAR_LOG(warning) << print() << " No video-stream found. Running without video.";   \r
 119                 }\r
 120                 catch(...)\r
 121                 {\r
 122                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 123                         CASPAR_LOG(warning) << print() << "Failed to open video-stream. Running without video.";        \r
 124                 }\r
 125 \r
 126                 try\r
 127                 {\r
 128                         audio_decoder_.reset(new audio_decoder(input_.context(), format_desc_));\r
 129                         audio_decoder_->subscribe(event_subject_);\r
 130                         CASPAR_LOG(info) << print() << L" " << audio_decoder_->print();\r
 131                 }\r
 132                 catch(averror_stream_not_found&)\r
 133                 {\r
 134                         //CASPAR_LOG(warning) << print() << " No audio-stream found. Running without audio.";   \r
 135                 }\r
 136                 catch(...)\r
 137                 {\r
 138                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 139                         CASPAR_LOG(warning) << print() << " Failed to open audio-stream. Running without audio.";               \r
 140                 }       \r
 141 \r
 142                 if(!video_decoder_ && !audio_decoder_)\r
 143                         BOOST_THROW_EXCEPTION(averror_stream_not_found() << msg_info("No streams found"));\r
 144 \r
 145                 muxer_.reset(new frame_muxer(fps_, frame_factory, format_desc_, filter));\r
 146 \r
 147                 CASPAR_LOG(info) << print() << L" Initialized";\r
 148         }\r
 149 \r
 150         // frame_producer\r
 151         \r
 152         core::draw_frame receive() override\r
 153         {                               \r
 154                 boost::timer frame_timer;\r
 155                                 \r
 156                 auto frame = core::draw_frame::late();          \r
 157                 if(!try_decode_frame(frame))\r
 158                 {\r
 159                         if(!input_.eof())               \r
 160                                 graph_->set_tag("underflow");   \r
 161                 }\r
 162                                                         \r
 163                 graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);\r
 164                 event_subject_  << monitor::event("profiler/time") % frame_timer.elapsed() % (1.0/format_desc_.fps);                    \r
 165                                                                 \r
 166                 graph_->set_text(print());\r
 167 \r
 168                 if(frame != core::draw_frame::late())\r
 169                 {\r
 170                         ++frame_number_;\r
 171                         last_frame_ = frame;\r
 172                 }\r
 173                                 \r
 174                 event_subject_  << monitor::event("file/time")                  % monitor::duration(file_frame_number()/fps_) \r
 175                                                                                                                                 % monitor::duration(file_nb_frames()/fps_)\r
 176                                                 << monitor::event("file/frame")                 % static_cast<int32_t>(file_frame_number())\r
 177                                                                                                                                 % static_cast<int32_t>(file_nb_frames())\r
 178                                                 << monitor::event("file/fps")                   % fps_\r
 179                                                 << monitor::event("file/path")                  % filename_\r
 180                                                 << monitor::event("loop")                               % input_.loop();\r
 181 \r
 182                 return frame;\r
 183         }\r
 184 \r
 185         core::draw_frame last_frame() const override\r
 186         {\r
 187                 return core::draw_frame::still(last_frame_);\r
 188         }\r
 189         \r
 190         uint32_t nb_frames() const override\r
 191         {\r
 192                 if(input_.loop())\r
 193                         return std::numeric_limits<uint32_t>::max();\r
 194 \r
 195                 uint32_t nb_frames = file_nb_frames();\r
 196 \r
 197                 nb_frames = std::min(input_.length(), nb_frames);\r
 198                 nb_frames = muxer_->calc_nb_frames(nb_frames);\r
 199                 \r
 200                 return nb_frames > start_ ? nb_frames - start_ : 0;\r
 201         }\r
 202 \r
 203         uint32_t file_nb_frames() const\r
 204         {\r
 205                 uint32_t file_nb_frames = 0;\r
 206                 file_nb_frames = std::max(file_nb_frames, video_decoder_ ? video_decoder_->nb_frames() : 0);\r
 207                 file_nb_frames = std::max(file_nb_frames, audio_decoder_ ? audio_decoder_->nb_frames() : 0);\r
 208                 return file_nb_frames;\r
 209         }\r
 210 \r
 211         uint32_t file_frame_number() const\r
 212         {\r
 213                 return video_decoder_ ? video_decoder_->file_frame_number() : 0;\r
 214         }\r
 215         \r
 216         boost::unique_future<std::wstring> call(const std::wstring& param) override\r
 217         {\r
 218                 static const boost::wregex loop_exp(L"LOOP\\s*(?<VALUE>\\d?)?", boost::regex::icase);\r
 219                 static const boost::wregex seek_exp(L"SEEK\\s+(?<VALUE>\\d+)", boost::regex::icase);\r
 220                 static const boost::wregex length_exp(L"LENGTH\\s+(?<VALUE>\\d+)?", boost::regex::icase);\r
 221                 static const boost::wregex start_exp(L"START\\s+(?<VALUE>\\d+)?", boost::regex::icase);\r
 222                 \r
 223                 std::wstring result;\r
 224                         \r
 225                 boost::wsmatch what;\r
 226                 if(boost::regex_match(param, what, loop_exp))\r
 227                 {\r
 228                         auto value = what["VALUE"].str();\r
 229                         if(!value.empty())\r
 230                                 input_.loop(boost::lexical_cast<bool>(value));\r
 231                         result = boost::lexical_cast<std::wstring>(input_.loop());\r
 232                 }\r
 233                 else if(boost::regex_match(param, what, seek_exp))\r
 234                 {\r
 235                         auto value = what["VALUE"].str();\r
 236                         input_.seek(boost::lexical_cast<uint32_t>(value));\r
 237                 }\r
 238                 else if(boost::regex_match(param, what, length_exp))\r
 239                 {\r
 240                         auto value = what["VALUE"].str();\r
 241                         if(!value.empty())\r
 242                         {\r
 243                                 if(boost::iequals(value, "NaN") || boost::iequals(value, "-1"))\r
 244                                         input_.length(std::numeric_limits<uint32_t>::max());\r
 245                                 else\r
 246                                         input_.length(boost::lexical_cast<uint32_t>(value));\r
 247                         }\r
 248                         result = boost::lexical_cast<std::wstring>(input_.length());\r
 249                 }\r
 250                 else if(boost::regex_match(param, what, start_exp))\r
 251                 {\r
 252                         auto value = what["VALUE"].str();\r
 253                         if(!value.empty())\r
 254                                 input_.start(boost::lexical_cast<uint32_t>(value));\r
 255                         result = boost::lexical_cast<std::wstring>(input_.start());\r
 256                 }\r
 257                 else\r
 258                         BOOST_THROW_EXCEPTION(invalid_argument());\r
 259 \r
 260                 return async(launch::deferred, [=]{return result;});\r
 261         }\r
 262                                 \r
 263         std::wstring print() const override\r
 264         {\r
 265                 return L"ffmpeg[" + boost::filesystem::path(filename_).filename().wstring() + L"|" \r
 266                                                   + print_mode() + L"|" \r
 267                                                   + boost::lexical_cast<std::wstring>(file_frame_number()) + L"/" + boost::lexical_cast<std::wstring>(file_nb_frames()) + L"]";\r
 268         }\r
 269 \r
 270         std::wstring name() const override\r
 271         {\r
 272                 return L"ffmpeg";\r
 273         }\r
 274 \r
 275         boost::property_tree::wptree info() const override\r
 276         {\r
 277                 boost::property_tree::wptree info;\r
 278                 info.add(L"type",                               L"ffmpeg");\r
 279                 info.add(L"filename",                   filename_);\r
 280                 info.add(L"width",                              video_decoder_ ? video_decoder_->width() : 0);\r
 281                 info.add(L"height",                             video_decoder_ ? video_decoder_->height() : 0);\r
 282                 info.add(L"progressive",                video_decoder_ ? video_decoder_->is_progressive() : false);\r
 283                 info.add(L"fps",                                fps_);\r
 284                 info.add(L"loop",                               input_.loop());\r
 285                 info.add(L"frame-number",               frame_number_);\r
 286                 auto nb_frames2 = nb_frames();\r
 287                 info.add(L"nb-frames",                  nb_frames2 == std::numeric_limits<int64_t>::max() ? -1 : nb_frames2);\r
 288                 info.add(L"file-frame-number",  file_frame_number());\r
 289                 info.add(L"file-nb-frames",             file_nb_frames());\r
 290                 return info;\r
 291         }\r
 292         \r
 293         void subscribe(const monitor::observable::observer_ptr& o) override\r
 294         {\r
 295                 event_subject_.subscribe(o);\r
 296         }\r
 297 \r
 298         void unsubscribe(const monitor::observable::observer_ptr& o) override\r
 299         {\r
 300                 event_subject_.unsubscribe(o);\r
 301         }\r
 302 \r
 303         // ffmpeg_producer\r
 304 \r
 305         std::wstring print_mode() const\r
 306         {\r
 307                 return video_decoder_ ? ffmpeg::print_mode(video_decoder_->width(), video_decoder_->height(), fps_, !video_decoder_->is_progressive()) : L"n/a";\r
 308         }\r
 309                         \r
 310         bool try_decode_frame(core::draw_frame& result)\r
 311         {\r
 312                 for(int n = 0; n < 32; ++n)\r
 313                 {\r
 314                         if(muxer_->try_pop(result))                     \r
 315                                 return true;                    \r
 316 \r
 317                         std::shared_ptr<AVPacket> pkt;\r
 318 \r
 319                         for(int n = 0; n < 32 && ((video_decoder_ && !video_decoder_->ready()) || (audio_decoder_ && !audio_decoder_->ready())) && input_.try_pop(pkt); ++n)\r
 320                         {\r
 321                                 if(video_decoder_)\r
 322                                         video_decoder_->push(pkt);\r
 323                                 if(audio_decoder_)\r
 324                                         audio_decoder_->push(pkt);\r
 325                         }\r
 326                 \r
 327                         std::shared_ptr<AVFrame>                        video;\r
 328                         std::shared_ptr<core::audio_buffer> audio;\r
 329 \r
 330                         tbb::parallel_invoke(\r
 331                         [&]\r
 332                         {\r
 333                                 if(!muxer_->video_ready() && video_decoder_)    \r
 334                                         video = video_decoder_->poll(); \r
 335                         },\r
 336                         [&]\r
 337                         {               \r
 338                                 if(!muxer_->audio_ready() && audio_decoder_)            \r
 339                                         audio = audio_decoder_->poll();         \r
 340                         });\r
 341                 \r
 342                         muxer_->push_video(video);\r
 343                         muxer_->push_audio(audio);\r
 344 \r
 345                         if(!audio_decoder_)\r
 346                         {\r
 347                                 if(video == flush_video())\r
 348                                         muxer_->push_audio(flush_audio());\r
 349                                 else if(!muxer_->audio_ready())\r
 350                                         muxer_->push_audio(empty_audio());\r
 351                         }\r
 352 \r
 353                         if(!video_decoder_)\r
 354                         {\r
 355                                 if(audio == flush_audio())\r
 356                                         muxer_->push_video(flush_video());\r
 357                                 else if(!muxer_->video_ready())\r
 358                                         muxer_->push_video(empty_video());\r
 359                         }\r
 360                 }\r
 361 \r
 362                 return false;\r
 363         }\r
 364 };\r
 365 \r
 366 spl::shared_ptr<core::frame_producer> create_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const core::video_format_desc& format_desc, const std::vector<std::wstring>& params)\r
 367 {               \r
 368         auto filename = probe_stem(env::media_folder() + L"\\" + params.at(0));\r
 369 \r
 370         if(filename.empty())\r
 371                 return core::frame_producer::empty();\r
 372         \r
 373         auto loop               = boost::range::find(params, L"LOOP") != params.end();\r
 374         auto start              = get_param(L"START", params, get_param(L"SEEK", params, static_cast<uint32_t>(0)));\r
 375         auto length             = get_param(L"LENGTH", params, std::numeric_limits<uint32_t>::max());\r
 376         auto filter_str = get_param(L"FILTER", params, L"");    \r
 377                 \r
 378         boost::replace_all(filter_str, L"DEINTERLACE", L"YADIF=0:-1");\r
 379         boost::replace_all(filter_str, L"DEINTERLACE_BOB", L"YADIF=1:-1");\r
 380         \r
 381         return spl::make_shared_ptr(std::make_shared<ffmpeg_producer>(frame_factory, format_desc, filename, filter_str, loop, start, length));\r
 382 }\r
 383 \r
 384 }}