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