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 \r
  39 #include <core/video_format.h>\r
  40 #include <core/producer/frame_producer.h>\r
  41 #include <core/frame/frame_factory.h>\r
  42 #include <core/frame/draw_frame.h>\r
  43 #include <core/frame/frame_transform.h>\r
  44 #include <core/monitor/monitor.h>\r
  45 \r
  46 #include <boost/algorithm/string.hpp>\r
  47 #include <common/assert.h>\r
  48 #include <boost/assign.hpp>\r
  49 #include <boost/timer.hpp>\r
  50 #include <boost/foreach.hpp>\r
  51 #include <boost/filesystem.hpp>\r
  52 #include <boost/range/algorithm/find_if.hpp>\r
  53 #include <boost/range/algorithm/find.hpp>\r
  54 #include <boost/property_tree/ptree.hpp>\r
  55 #include <boost/regex.hpp>\r
  56 #include <boost/thread/future.hpp>\r
  57 \r
  58 #include <tbb/parallel_invoke.h>\r
  59 \r
  60 #include <limits>\r
  61 #include <memory>\r
  62 #include <queue>\r
  63 \r
  64 namespace caspar { namespace ffmpeg {\r
  65                                 \r
  66 struct ffmpeg_producer : public core::frame_producer\r
  67 {\r
  68         monitor::basic_subject                                                                          event_subject_;\r
  69         const std::wstring                                                                                      filename_;\r
  70         \r
  71         const spl::shared_ptr<diagnostics::graph>                                       graph_;\r
  72                                         \r
  73         const spl::shared_ptr<core::frame_factory>                                      frame_factory_;\r
  74         const core::video_format_desc                                                           format_desc_;\r
  75 \r
  76         input                                                                                                           input_; \r
  77         std::unique_ptr<video_decoder>                                                          video_decoder_;\r
  78         std::unique_ptr<audio_decoder>                                                          audio_decoder_; \r
  79         std::unique_ptr<frame_muxer>                                                            muxer_;\r
  80 \r
  81         const double                                                                                            fps_;\r
  82         const uint32_t                                                                                          start_;\r
  83         const uint32_t                                                                                          length_;\r
  84                 \r
  85         int64_t                                                                                                         frame_number_;\r
  86 \r
  87         spl::shared_ptr<core::draw_frame>                                                       last_frame_;\r
  88         \r
  89 public:\r
  90         explicit ffmpeg_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const std::wstring& filename, const std::wstring& filter, bool loop, uint32_t start, uint32_t length) \r
  91                 : filename_(filename)\r
  92                 , frame_factory_(frame_factory)         \r
  93                 , format_desc_(frame_factory->video_format_desc())\r
  94                 , input_(graph_, filename_, loop, start, length)\r
  95                 , fps_(read_fps(*input_.context(), format_desc_.fps))\r
  96                 , start_(start)\r
  97                 , length_(length)\r
  98                 , frame_number_(0)\r
  99                 , last_frame_(core::draw_frame::empty())\r
 100         {\r
 101                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 102                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));   \r
 103                 diagnostics::register_graph(graph_);\r
 104                 \r
 105                 try\r
 106                 {\r
 107                         video_decoder_.reset(new video_decoder(input_.context()));\r
 108                         video_decoder_->subscribe(event_subject_);\r
 109                         CASPAR_LOG(info) << print() << L" " << video_decoder_->print();\r
 110                 }\r
 111                 catch(averror_stream_not_found&)\r
 112                 {\r
 113                         //CASPAR_LOG(warning) << print() << " No video-stream found. Running without video.";   \r
 114                 }\r
 115                 catch(...)\r
 116                 {\r
 117                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 118                         CASPAR_LOG(warning) << print() << "Failed to open video-stream. Running without video.";        \r
 119                 }\r
 120 \r
 121                 try\r
 122                 {\r
 123                         audio_decoder_.reset(new audio_decoder(input_.context(), frame_factory->video_format_desc()));\r
 124                         audio_decoder_->subscribe(event_subject_);\r
 125                         CASPAR_LOG(info) << print() << L" " << audio_decoder_->print();\r
 126                 }\r
 127                 catch(averror_stream_not_found&)\r
 128                 {\r
 129                         //CASPAR_LOG(warning) << print() << " No audio-stream found. Running without audio.";   \r
 130                 }\r
 131                 catch(...)\r
 132                 {\r
 133                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 134                         CASPAR_LOG(warning) << print() << " Failed to open audio-stream. Running without audio.";               \r
 135                 }       \r
 136 \r
 137                 if(!video_decoder_ && !audio_decoder_)\r
 138                         BOOST_THROW_EXCEPTION(averror_stream_not_found() << msg_info("No streams found"));\r
 139 \r
 140                 muxer_.reset(new frame_muxer(fps_, frame_factory, filter));\r
 141         }\r
 142 \r
 143         // frame_producer\r
 144         \r
 145         virtual spl::shared_ptr<core::draw_frame> receive(int flags) override\r
 146         {               \r
 147                 boost::timer frame_timer;\r
 148                                 \r
 149                 std::shared_ptr<core::draw_frame> frame = try_decode_frame(flags);\r
 150                                                         \r
 151                 graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);\r
 152                 \r
 153                 event_subject_  << monitor::event("profiler/time")              % frame_timer.elapsed() % (1.0/format_desc_.fps)                                        \r
 154                                                 << monitor::event("file/time")                  % monitor::duration(file_frame_number()/fps_) \r
 155                                                                                                                                 % monitor::duration(file_nb_frames()/fps_)\r
 156                                                 << monitor::event("file/frame")                 % static_cast<int32_t>(file_frame_number())\r
 157                                                                                                                                 % static_cast<int32_t>(file_nb_frames())\r
 158                                                 << monitor::event("file/fps")                   % fps_\r
 159                                                 << monitor::event("filename")                   % u8(filename_)\r
 160                                                 << monitor::event("loop")                               % input_.loop();\r
 161                                 \r
 162                 if(!frame)\r
 163                 {\r
 164                         if(!input_.eof())               \r
 165                                 graph_->set_tag("underflow");   \r
 166                         return core::draw_frame::late();\r
 167                 }\r
 168                                 \r
 169                 ++frame_number_;\r
 170 \r
 171                 graph_->set_text(print());\r
 172                 \r
 173                 if(frame != core::draw_frame::late())\r
 174                         last_frame_ = spl::make_shared_ptr(frame);\r
 175 \r
 176                 return spl::make_shared_ptr(frame);\r
 177         }\r
 178 \r
 179         virtual spl::shared_ptr<core::draw_frame> last_frame() const override\r
 180         {\r
 181                 return core::draw_frame::still(last_frame_);\r
 182         }\r
 183         \r
 184         virtual uint32_t nb_frames() const override\r
 185         {\r
 186                 if(input_.loop())\r
 187                         return std::numeric_limits<uint32_t>::max();\r
 188 \r
 189                 uint32_t nb_frames = file_nb_frames();\r
 190 \r
 191                 nb_frames = std::min(length_, nb_frames);\r
 192                 nb_frames = muxer_->calc_nb_frames(nb_frames);\r
 193                 \r
 194                 return nb_frames > start_ ? nb_frames - start_ : 0;\r
 195         }\r
 196 \r
 197         uint32_t file_nb_frames() const\r
 198         {\r
 199                 uint32_t file_nb_frames = 0;\r
 200                 file_nb_frames = std::max(file_nb_frames, video_decoder_ ? video_decoder_->nb_frames() : 0);\r
 201                 file_nb_frames = std::max(file_nb_frames, audio_decoder_ ? audio_decoder_->nb_frames() : 0);\r
 202                 return file_nb_frames;\r
 203         }\r
 204 \r
 205         uint32_t file_frame_number() const\r
 206         {\r
 207                 return video_decoder_ ? video_decoder_->file_frame_number() : 0;\r
 208         }\r
 209         \r
 210         virtual boost::unique_future<std::wstring> call(const std::wstring& param) override\r
 211         {\r
 212                 boost::promise<std::wstring> promise;\r
 213                 promise.set_value(do_call(param));\r
 214                 return promise.get_future();\r
 215         }\r
 216                                 \r
 217         virtual std::wstring print() const override\r
 218         {\r
 219                 return L"ffmpeg[" + boost::filesystem::path(filename_).filename().wstring() + L"|" \r
 220                                                   + print_mode() + L"|" \r
 221                                                   + boost::lexical_cast<std::wstring>(file_frame_number()) + L"/" + boost::lexical_cast<std::wstring>(file_nb_frames()) + L"]";\r
 222         }\r
 223 \r
 224         virtual std::wstring name() const override\r
 225         {\r
 226                 return L"ffmpeg";\r
 227         }\r
 228 \r
 229         boost::property_tree::wptree info() const override\r
 230         {\r
 231                 boost::property_tree::wptree info;\r
 232                 info.add(L"type",                               L"ffmpeg");\r
 233                 info.add(L"filename",                   filename_);\r
 234                 info.add(L"width",                              video_decoder_ ? video_decoder_->width() : 0);\r
 235                 info.add(L"height",                             video_decoder_ ? video_decoder_->height() : 0);\r
 236                 info.add(L"progressive",                video_decoder_ ? video_decoder_->is_progressive() : false);\r
 237                 info.add(L"fps",                                fps_);\r
 238                 info.add(L"loop",                               input_.loop());\r
 239                 info.add(L"frame-number",               frame_number_);\r
 240                 auto nb_frames2 = nb_frames();\r
 241                 info.add(L"nb-frames",                  nb_frames2 == std::numeric_limits<int64_t>::max() ? -1 : nb_frames2);\r
 242                 info.add(L"file-frame-number",  file_frame_number());\r
 243                 info.add(L"file-nb-frames",             file_nb_frames());\r
 244                 return info;\r
 245         }\r
 246         \r
 247         virtual void subscribe(const monitor::observable::observer_ptr& o) override\r
 248         {\r
 249                 event_subject_.subscribe(o);\r
 250         }\r
 251 \r
 252         virtual void unsubscribe(const monitor::observable::observer_ptr& o) override\r
 253         {\r
 254                 event_subject_.unsubscribe(o);\r
 255         }\r
 256 \r
 257         // ffmpeg_producer\r
 258 \r
 259         std::wstring print_mode() const\r
 260         {\r
 261                 return video_decoder_ ? ffmpeg::print_mode(video_decoder_->width(), video_decoder_->height(), fps_, !video_decoder_->is_progressive()) : L"n/a";\r
 262         }\r
 263                                         \r
 264         std::wstring do_call(const std::wstring& param)\r
 265         {\r
 266                 static const boost::wregex loop_exp(L"LOOP\\s*(?<VALUE>\\d?)?", boost::regex::icase);\r
 267                 static const boost::wregex seek_exp(L"SEEK\\s+(?<VALUE>\\d+)", boost::regex::icase);\r
 268                 \r
 269                 boost::wsmatch what;\r
 270                 if(boost::regex_match(param, what, loop_exp))\r
 271                 {\r
 272                         if(!what["VALUE"].str().empty())\r
 273                                 input_.loop(boost::lexical_cast<bool>(what["VALUE"].str()));\r
 274                         return boost::lexical_cast<std::wstring>(input_.loop());\r
 275                 }\r
 276                 if(boost::regex_match(param, what, seek_exp))\r
 277                 {\r
 278                         input_.seek(boost::lexical_cast<uint32_t>(what["VALUE"].str()));\r
 279                         return L"";\r
 280                 }\r
 281 \r
 282                 BOOST_THROW_EXCEPTION(invalid_argument());\r
 283         }\r
 284 \r
 285         std::shared_ptr<core::draw_frame> try_decode_frame(int flags)\r
 286         {\r
 287                 std::shared_ptr<core::draw_frame> result = muxer_->poll();\r
 288 \r
 289                 for(int n = 0; n < 32 && !result; ++n, result = muxer_->poll())\r
 290                 {\r
 291                         std::shared_ptr<AVPacket> pkt;\r
 292 \r
 293                         for(int n = 0; n < 32 && ((video_decoder_ && !video_decoder_->ready()) || (audio_decoder_ && !audio_decoder_->ready())) && input_.try_pop(pkt); ++n)\r
 294                         {\r
 295                                 if(video_decoder_)\r
 296                                         video_decoder_->push(pkt);\r
 297                                 if(audio_decoder_)\r
 298                                         audio_decoder_->push(pkt);\r
 299                         }\r
 300                 \r
 301                         std::shared_ptr<AVFrame>                        video;\r
 302                         std::shared_ptr<core::audio_buffer> audio;\r
 303 \r
 304                         tbb::parallel_invoke(\r
 305                         [&]\r
 306                         {\r
 307                                 if(!muxer_->video_ready() && video_decoder_)    \r
 308                                         video = video_decoder_->poll(); \r
 309                         },\r
 310                         [&]\r
 311                         {               \r
 312                                 if(!muxer_->audio_ready() && audio_decoder_)            \r
 313                                         audio = audio_decoder_->poll();         \r
 314                         });\r
 315                 \r
 316                         muxer_->push(video, flags);\r
 317                         muxer_->push(audio);\r
 318 \r
 319                         if(!audio_decoder_)\r
 320                         {\r
 321                                 if(video == flush_video())\r
 322                                         muxer_->push(flush_audio());\r
 323                                 else if(!muxer_->audio_ready())\r
 324                                         muxer_->push(empty_audio());\r
 325                         }\r
 326 \r
 327                         if(!video_decoder_)\r
 328                         {\r
 329                                 if(audio == flush_audio())\r
 330                                         muxer_->push(flush_video(), 0);\r
 331                                 else if(!muxer_->video_ready())\r
 332                                         muxer_->push(empty_video(), 0);\r
 333                         }\r
 334                 }\r
 335 \r
 336                 return result;\r
 337         }\r
 338 };\r
 339 \r
 340 spl::shared_ptr<core::frame_producer> create_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)\r
 341 {               \r
 342         auto filename = probe_stem(env::media_folder() + L"\\" + params.at(0));\r
 343 \r
 344         if(filename.empty())\r
 345                 return core::frame_producer::empty();\r
 346         \r
 347         auto loop               = boost::range::find(params, L"LOOP") != params.end();\r
 348         auto start              = get_param(L"SEEK", params, static_cast<uint32_t>(0));\r
 349         auto length             = get_param(L"LENGTH", params, std::numeric_limits<uint32_t>::max());\r
 350         auto filter_str = get_param(L"FILTER", params, L"");    \r
 351                 \r
 352         boost::replace_all(filter_str, L"DEINTERLACE", L"YADIF=0:-1");\r
 353         boost::replace_all(filter_str, L"DEINTERLACE_BOB", L"YADIF=1:-1");\r
 354         \r
 355         return core::wrap_producer(spl::make_shared<ffmpeg_producer>(frame_factory, filename, filter_str, loop, start, length));\r
 356 }\r
 357 \r
 358 }}