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 \r
  79         tbb::atomic<bool>                                                               paused_;\r
  80         const double                                                                    fps_;\r
  81         const uint32_t                                                                  start_;\r
  82                 \r
  83         video_decoder                                                                   video_decoder_;\r
  84         audio_decoder                                                                   audio_decoder_; \r
  85         frame_muxer                                                                             muxer_;\r
  86 \r
  87         tbb::atomic<uint32_t>                                                   frame_number_;\r
  88 \r
  89         core::draw_frame                                                                last_frame_;\r
  90         \r
  91 public:\r
  92         explicit ffmpeg_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, \r
  93                                                          const core::video_format_desc& format_desc, \r
  94                                                          const std::wstring& filename, \r
  95                                                          const std::wstring& filter, \r
  96                                                          bool loop, \r
  97                                                          uint32_t start, \r
  98                                                          uint32_t length) \r
  99                 : filename_(filename)\r
 100                 , frame_factory_(frame_factory)         \r
 101                 , format_desc_(format_desc)\r
 102                 , input_(graph_, filename_, loop, start, length)\r
 103                 , fps_(read_fps(*input_.context(), format_desc_.fps))\r
 104                 , muxer_(fps_, frame_factory, format_desc_, filter)\r
 105                 , start_(start)\r
 106                 , last_frame_(core::draw_frame::empty())\r
 107         {\r
 108                 paused_ = false;\r
 109                 frame_number_ = 0;\r
 110 \r
 111                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 112                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));   \r
 113                 diagnostics::register_graph(graph_);\r
 114                 \r
 115                 video_decoder_.subscribe(event_subject_);\r
 116                 audio_decoder_.subscribe(event_subject_);\r
 117 \r
 118                 try\r
 119                 {\r
 120                         video_decoder_ = video_decoder(input_);\r
 121                         \r
 122                         CASPAR_LOG(info) << print() << L" " << video_decoder_.print();\r
 123                 }\r
 124                 catch(averror_stream_not_found&)\r
 125                 {\r
 126                         //CASPAR_LOG(warning) << print() << " No video-stream found. Running without video.";   \r
 127                 }\r
 128                 catch(...)\r
 129                 {\r
 130                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 131                         CASPAR_LOG(warning) << print() << "Failed to open video-stream. Running without video.";        \r
 132                 }\r
 133 \r
 134                 try\r
 135                 {\r
 136                         audio_decoder_ = audio_decoder(input_, format_desc_);\r
 137                         \r
 138                         CASPAR_LOG(info) << print() << L" " << audio_decoder_.print();\r
 139                 }\r
 140                 catch(averror_stream_not_found&)\r
 141                 {\r
 142                         //CASPAR_LOG(warning) << print() << " No audio-stream found. Running without audio.";   \r
 143                 }\r
 144                 catch(...)\r
 145                 {\r
 146                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 147                         CASPAR_LOG(warning) << print() << " Failed to open audio-stream. Running without audio.";               \r
 148                 }       \r
 149                 \r
 150                 CASPAR_LOG(info) << print() << L" Initialized";\r
 151         }\r
 152 \r
 153         // frame_producer\r
 154         \r
 155         core::draw_frame receive() override\r
 156         {                               \r
 157                 auto frame = core::draw_frame::late();          \r
 158                 \r
 159                 boost::timer frame_timer;\r
 160 \r
 161                 if(paused_)\r
 162                         frame = last_frame();   \r
 163                 else\r
 164                 {                                               \r
 165                         decode_next_frame();\r
 166                 \r
 167                         if(!muxer_.empty())\r
 168                         {\r
 169                                 last_frame_ = frame = std::move(muxer_.front());\r
 170                                 muxer_.pop();\r
 171 \r
 172                                 ++frame_number_;                \r
 173                         }\r
 174                         else                            \r
 175                                 graph_->set_tag("underflow");\r
 176                 }\r
 177                                                                         \r
 178                 graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);\r
 179                 event_subject_  << monitor::event("profiler/time") % frame_timer.elapsed() % (1.0/format_desc_.fps);                    \r
 180                                                                 \r
 181                 event_subject_  << monitor::event("file/time")                  % monitor::duration(file_frame_number()/fps_) \r
 182                                                                                                                                 % monitor::duration(file_nb_frames()/fps_)\r
 183                                                 << monitor::event("file/frame")                 % static_cast<int32_t>(file_frame_number())\r
 184                                                                                                                                 % static_cast<int32_t>(file_nb_frames())\r
 185                                                 << monitor::event("file/fps")                   % fps_\r
 186                                                 << monitor::event("file/path")                  % filename_\r
 187                                                 << monitor::event("loop")                               % input_.loop();\r
 188                                                 \r
 189                 return frame;\r
 190         }\r
 191 \r
 192         core::draw_frame last_frame() const override\r
 193         {\r
 194                 return core::draw_frame::still(last_frame_);\r
 195         }\r
 196 \r
 197         void paused(bool value)\r
 198         {\r
 199                 paused_ = value;\r
 200         }\r
 201 \r
 202         uint32_t frame_number() const override\r
 203         {\r
 204                 return frame_number_;\r
 205         }\r
 206         \r
 207         uint32_t nb_frames() const override\r
 208         {\r
 209                 if(input_.loop())\r
 210                         return std::numeric_limits<uint32_t>::max();\r
 211 \r
 212                 uint32_t nb_frames = file_nb_frames();\r
 213 \r
 214                 nb_frames = std::min(input_.length(), nb_frames);\r
 215                 nb_frames = muxer_.calc_nb_frames(nb_frames);\r
 216                 \r
 217                 return nb_frames > start_ ? nb_frames - start_ : 0;\r
 218         }\r
 219 \r
 220         uint32_t file_nb_frames() const\r
 221         {\r
 222                 uint32_t file_nb_frames = 0;\r
 223                 file_nb_frames = std::max(file_nb_frames, video_decoder_.nb_frames());\r
 224                 file_nb_frames = std::max(file_nb_frames, audio_decoder_.nb_frames());\r
 225                 return file_nb_frames;\r
 226         }\r
 227 \r
 228         uint32_t file_frame_number() const\r
 229         {\r
 230                 return video_decoder_.file_frame_number();\r
 231         }\r
 232                 \r
 233         boost::unique_future<std::wstring> call(const std::wstring& param) override\r
 234         {\r
 235                 static const boost::wregex loop_exp(L"LOOP\\s*(?<VALUE>\\d?)?", boost::regex::icase);\r
 236                 static const boost::wregex seek_exp(L"SEEK\\s+(?<VALUE>\\d+)", boost::regex::icase);\r
 237                 static const boost::wregex length_exp(L"LENGTH\\s+(?<VALUE>\\d+)?", boost::regex::icase);\r
 238                 static const boost::wregex start_exp(L"START\\s+(?<VALUE>\\d+)?", boost::regex::icase);\r
 239                 \r
 240                 std::wstring result;\r
 241                         \r
 242                 boost::wsmatch what;\r
 243                 if(boost::regex_match(param, what, loop_exp))\r
 244                 {\r
 245                         auto value = what["VALUE"].str();\r
 246                         if(!value.empty())\r
 247                                 input_.loop(boost::lexical_cast<bool>(value));\r
 248                         result = boost::lexical_cast<std::wstring>(loop());\r
 249                 }\r
 250                 else if(boost::regex_match(param, what, seek_exp))\r
 251                 {\r
 252                         auto value = what["VALUE"].str();\r
 253                         seek(boost::lexical_cast<uint32_t>(value));\r
 254                 }\r
 255                 else if(boost::regex_match(param, what, length_exp))\r
 256                 {\r
 257                         auto value = what["VALUE"].str();\r
 258                         if(!value.empty())\r
 259                                 length(boost::lexical_cast<uint32_t>(value));                   \r
 260                         result = boost::lexical_cast<std::wstring>(length());\r
 261                 }\r
 262                 else if(boost::regex_match(param, what, start_exp))\r
 263                 {\r
 264                         auto value = what["VALUE"].str();\r
 265                         if(!value.empty())\r
 266                                 start(boost::lexical_cast<uint32_t>(value));\r
 267                         result = boost::lexical_cast<std::wstring>(start());\r
 268                 }\r
 269                 else\r
 270                         BOOST_THROW_EXCEPTION(invalid_argument());\r
 271 \r
 272                 return async(launch::deferred, [=]{return result;});\r
 273         }\r
 274                                 \r
 275         std::wstring print() const override\r
 276         {\r
 277                 return L"ffmpeg[" + boost::filesystem::path(filename_).filename().wstring() + L"|" \r
 278                                                   + print_mode() + L"|" \r
 279                                                   + boost::lexical_cast<std::wstring>(file_frame_number()) + L"/" + boost::lexical_cast<std::wstring>(file_nb_frames()) + L"]";\r
 280         }\r
 281 \r
 282         std::wstring name() const override\r
 283         {\r
 284                 return L"ffmpeg";\r
 285         }\r
 286 \r
 287         boost::property_tree::wptree info() const override\r
 288         {\r
 289                 boost::property_tree::wptree info;\r
 290                 info.add(L"type",                               L"ffmpeg");\r
 291                 info.add(L"filename",                   filename_);\r
 292                 info.add(L"width",                              video_decoder_.width());\r
 293                 info.add(L"height",                             video_decoder_.height());\r
 294                 info.add(L"progressive",                video_decoder_.is_progressive());\r
 295                 info.add(L"fps",                                fps_);\r
 296                 info.add(L"loop",                               input_.loop());\r
 297                 info.add(L"frame-number",               frame_number_);\r
 298                 auto nb_frames2 = nb_frames();\r
 299                 info.add(L"nb-frames",                  nb_frames2 == std::numeric_limits<int64_t>::max() ? -1 : nb_frames2);\r
 300                 info.add(L"file-frame-number",  file_frame_number());\r
 301                 info.add(L"file-nb-frames",             file_nb_frames());\r
 302                 return info;\r
 303         }\r
 304         \r
 305         void subscribe(const monitor::observable::observer_ptr& o) override\r
 306         {\r
 307                 event_subject_.subscribe(o);\r
 308         }\r
 309 \r
 310         void unsubscribe(const monitor::observable::observer_ptr& o) override\r
 311         {\r
 312                 event_subject_.unsubscribe(o);\r
 313         }\r
 314 \r
 315         // ffmpeg_producer\r
 316         \r
 317         void loop(bool value)\r
 318         {\r
 319                 input_.loop(value);\r
 320         }\r
 321 \r
 322         bool loop() const\r
 323         {\r
 324                 return input_.loop();\r
 325         }\r
 326 \r
 327         void length(uint32_t value)\r
 328         {\r
 329                 input_.length(value);\r
 330         }\r
 331 \r
 332         uint32_t length()\r
 333         {\r
 334                 return input_.length();\r
 335         }\r
 336         \r
 337         void start(uint32_t value)\r
 338         {\r
 339                 input_.start(value);\r
 340         }\r
 341 \r
 342         uint32_t start()\r
 343         {\r
 344                 return input_.start();\r
 345         }\r
 346 \r
 347         void seek(uint32_t target)\r
 348         {\r
 349                 muxer_.clear();\r
 350                 \r
 351                 // TODO: Fix HACK.\r
 352                 \r
 353                 target = std::min(target, file_nb_frames());\r
 354 \r
 355                 input_.seek(target);\r
 356                 muxer_.clear();\r
 357                 \r
 358                 // BEGIN HACK: There is no way to flush yadif. Need to poll 2 frames.\r
 359                 for(int n = 0; n < 25 && file_frame_number() != target+2; ++n)\r
 360                 {\r
 361                         decode_next_frame();\r
 362                         if(!muxer_.empty())\r
 363                                 muxer_.pop();\r
 364                 }\r
 365                 // END HACK\r
 366 \r
 367                 decode_next_frame();\r
 368 \r
 369                 last_frame_ = !muxer_.empty() ? muxer_.front() : last_frame_;                   \r
 370         }\r
 371 \r
 372         std::wstring print_mode() const\r
 373         {\r
 374                 return ffmpeg::print_mode(video_decoder_.width(), video_decoder_.height(), fps_, !video_decoder_.is_progressive());\r
 375         }\r
 376                         \r
 377         void decode_next_frame()\r
 378         {\r
 379                 for(int n = 0; n < 64 && muxer_.empty(); ++n)\r
 380                 {               \r
 381                         std::shared_ptr<AVFrame>                        video;\r
 382                         std::shared_ptr<core::audio_buffer> audio;\r
 383 \r
 384                         tbb::parallel_invoke\r
 385                         (\r
 386                                 [&]\r
 387                                 {\r
 388                                         if(!muxer_.video_ready())\r
 389                                                 video = video_decoder_();\r
 390                                 },\r
 391                                 [&]\r
 392                                 {               \r
 393                                         if(!muxer_.audio_ready())\r
 394                                                 audio = audio_decoder_();               \r
 395                                 }\r
 396                         );\r
 397                 \r
 398                         muxer_.push(video);\r
 399                         muxer_.push(audio);\r
 400                 }\r
 401                 graph_->set_text(print());\r
 402         }\r
 403 };\r
 404 \r
 405 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
 406 {               \r
 407         auto filename = probe_stem(env::media_folder() + L"\\" + params.at(0));\r
 408 \r
 409         if(filename.empty())\r
 410                 return core::frame_producer::empty();\r
 411         \r
 412         auto loop               = boost::range::find(params, L"LOOP") != params.end();\r
 413         auto start              = get_param(L"START", params, get_param(L"SEEK", params, static_cast<uint32_t>(0)));\r
 414         auto length             = get_param(L"LENGTH", params, std::numeric_limits<uint32_t>::max());\r
 415         auto filter_str = get_param(L"FILTER", params, L"");    \r
 416         \r
 417         return spl::make_shared_ptr(std::make_shared<ffmpeg_producer>(frame_factory, format_desc, filename, filter_str, loop, start, length));\r
 418 }\r
 419 \r
 420 }}