git.sesse.net Git - casparcg/blob - modules/ffmpeg/producer/ffmpeg_producer.cpp

   1 /*\r
   2 * Copyright 2013 Sveriges Television AB http://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.h"\r
  27 #include "../ffmpeg_error.h"\r
  28 #include "../ffmpeg_params.h"\r
  29 \r
  30 #include "muxer/frame_muxer.h"\r
  31 #include "input/input.h"\r
  32 #include "util/util.h"\r
  33 #include "audio/audio_decoder.h"\r
  34 #include "video/video_decoder.h"\r
  35 \r
  36 #include <common/env.h>\r
  37 #include <common/utility/assert.h>\r
  38 #include <common/diagnostics/graph.h>\r
  39 \r
  40 #include <core/monitor/monitor.h>\r
  41 #include <core/video_format.h>\r
  42 #include <core/parameters/parameters.h>\r
  43 #include <core/producer/frame_producer.h>\r
  44 #include <core/producer/frame/frame_factory.h>\r
  45 #include <core/producer/frame/basic_frame.h>\r
  46 #include <core/producer/frame/frame_transform.h>\r
  47 \r
  48 #include <boost/algorithm/string.hpp>\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/regex.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 std::wstring get_relative_or_original(\r
  66                 const std::wstring& filename,\r
  67                 const boost::filesystem::wpath& relative_to)\r
  68 {\r
  69         boost::filesystem::wpath file(filename);\r
  70         auto result = file.filename();\r
  71 \r
  72         boost::filesystem::wpath current_path = file;\r
  73 \r
  74         while (true)\r
  75         {\r
  76                 current_path = current_path.parent_path();\r
  77 \r
  78                 if (boost::filesystem::equivalent(current_path, relative_to))\r
  79                         break;\r
  80 \r
  81                 if (current_path.empty())\r
  82                         return filename;\r
  83 \r
  84                 result = current_path.filename() + L"/" + result;\r
  85         }\r
  86 \r
  87         return result;\r
  88 }\r
  89                                 \r
  90 struct ffmpeg_producer : public core::frame_producer\r
  91 {\r
  92         core::monitor::subject                                                                          monitor_subject_;\r
  93         const std::wstring                                                                                      filename_;\r
  94         const std::wstring                                                                                      path_relative_to_media_;\r
  95 \r
  96         FFMPEG_Resource                                                                                         resource_type_;\r
  97         \r
  98         const safe_ptr<diagnostics::graph>                                                      graph_;\r
  99         boost::timer                                                                                            frame_timer_;\r
 100                                         \r
 101         const safe_ptr<core::frame_factory>                                                     frame_factory_;\r
 102         const core::video_format_desc                                                           format_desc_;\r
 103 \r
 104         std::shared_ptr<void>                                                                           initial_logger_disabler_;\r
 105 \r
 106         input                                                                                                           input_; \r
 107         std::unique_ptr<video_decoder>                                                          video_decoder_;\r
 108         std::unique_ptr<audio_decoder>                                                          audio_decoder_; \r
 109         std::unique_ptr<frame_muxer>                                                            muxer_;\r
 110 \r
 111         const double                                                                                            fps_;\r
 112         const uint32_t                                                                                          start_;\r
 113         const uint32_t                                                                                          length_;\r
 114         const bool                                                                                                      thumbnail_mode_;\r
 115 \r
 116         safe_ptr<core::basic_frame>                                                                     last_frame_;\r
 117         \r
 118         std::queue<std::pair<safe_ptr<core::basic_frame>, size_t>>      frame_buffer_;\r
 119 \r
 120         int64_t                                                                                                         frame_number_;\r
 121         uint32_t                                                                                                        file_frame_number_;\r
 122                 \r
 123 public:\r
 124         explicit ffmpeg_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filename, FFMPEG_Resource resource_type, const std::wstring& filter, bool loop, uint32_t start, uint32_t length, bool thumbnail_mode, const std::wstring& custom_channel_order, const ffmpeg_producer_params& vid_params)\r
 125                 : filename_(filename)\r
 126                 , path_relative_to_media_(get_relative_or_original(filename, env::media_folder()))\r
 127                 , resource_type_(resource_type)\r
 128                 , frame_factory_(frame_factory)         \r
 129                 , format_desc_(frame_factory->get_video_format_desc())\r
 130                 , initial_logger_disabler_(temporary_disable_logging_for_thread(thumbnail_mode))\r
 131                 , input_(graph_, filename_, resource_type, loop, start, length, thumbnail_mode, vid_params)\r
 132                 , fps_(read_fps(*input_.context(), format_desc_.fps))\r
 133                 , start_(start)\r
 134                 , length_(length)\r
 135                 , thumbnail_mode_(thumbnail_mode)\r
 136                 , last_frame_(core::basic_frame::empty())\r
 137                 , frame_number_(0)\r
 138         {\r
 139                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 140                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));   \r
 141                 diagnostics::register_graph(graph_);\r
 142         \r
 143                 try\r
 144                 {\r
 145                         video_decoder_.reset(new video_decoder(input_.context()));\r
 146                         if (!thumbnail_mode_)\r
 147                                 CASPAR_LOG(info) << print() << L" " << video_decoder_->print();\r
 148                 }\r
 149                 catch(averror_stream_not_found&)\r
 150                 {\r
 151                         //CASPAR_LOG(warning) << print() << " No video-stream found. Running without video.";   \r
 152                 }\r
 153                 catch(...)\r
 154                 {\r
 155                         if (!thumbnail_mode_)\r
 156                         {\r
 157                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 158                                 CASPAR_LOG(warning) << print() << "Failed to open video-stream. Running without video.";        \r
 159                         }\r
 160                 }\r
 161 \r
 162                 core::channel_layout audio_channel_layout = core::default_channel_layout_repository().get_by_name(L"STEREO");\r
 163 \r
 164                 if (!thumbnail_mode_)\r
 165                 {\r
 166                         try\r
 167                         {\r
 168                                 audio_decoder_.reset(new audio_decoder(input_.context(), frame_factory->get_video_format_desc(), custom_channel_order));\r
 169                                 audio_channel_layout = audio_decoder_->channel_layout();\r
 170                                 CASPAR_LOG(info) << print() << L" " << audio_decoder_->print();\r
 171                         }\r
 172                         catch(averror_stream_not_found&)\r
 173                         {\r
 174                                 //CASPAR_LOG(warning) << print() << " No audio-stream found. Running without audio.";   \r
 175                         }\r
 176                         catch(...)\r
 177                         {\r
 178                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 179                                 CASPAR_LOG(warning) << print() << " Failed to open audio-stream. Running without audio.";               \r
 180                         }\r
 181                 }\r
 182 \r
 183                 if(!video_decoder_ && !audio_decoder_)\r
 184                         BOOST_THROW_EXCEPTION(averror_stream_not_found() << msg_info("No streams found"));\r
 185 \r
 186                 muxer_.reset(new frame_muxer(fps_, frame_factory, thumbnail_mode_, audio_channel_layout, filter));\r
 187         }\r
 188 \r
 189         // frame_producer\r
 190         \r
 191         virtual safe_ptr<core::basic_frame> receive(int hints) override\r
 192         {\r
 193                 return render_frame(hints).first;\r
 194         }\r
 195 \r
 196         virtual safe_ptr<core::basic_frame> last_frame() const override\r
 197         {\r
 198                 return disable_audio(last_frame_);\r
 199         }\r
 200 \r
 201         std::pair<safe_ptr<core::basic_frame>, uint32_t> render_frame(int hints)\r
 202         {               \r
 203                 frame_timer_.restart();\r
 204                 auto disable_logging = temporary_disable_logging_for_thread(thumbnail_mode_);\r
 205                                 \r
 206                 for(int n = 0; n < 16 && frame_buffer_.size() < 2; ++n)\r
 207                         try_decode_frame(hints);\r
 208                 \r
 209                 graph_->set_value("frame-time", frame_timer_.elapsed()*format_desc_.fps*0.5);\r
 210 \r
 211                 if (frame_buffer_.empty())\r
 212                 {\r
 213                         if (input_.eof())\r
 214                         {\r
 215                                 send_osc();\r
 216                                 return std::make_pair(last_frame(), -1);\r
 217                         }\r
 218                         else if (resource_type_ == FFMPEG_FILE)\r
 219                         {\r
 220                                 graph_->set_tag("underflow");  \r
 221                                 send_osc();\r
 222                                 return std::make_pair(core::basic_frame::late(), -1);     \r
 223                         }\r
 224                         else\r
 225                         {\r
 226                                 send_osc();\r
 227                                 return std::make_pair(last_frame(), -1);\r
 228                         }\r
 229                 }\r
 230                 \r
 231                 auto frame = frame_buffer_.front(); \r
 232                 frame_buffer_.pop();\r
 233                 \r
 234                 ++frame_number_;\r
 235                 file_frame_number_ = frame.second;\r
 236 \r
 237                 graph_->set_text(print());\r
 238 \r
 239                 last_frame_ = frame.first;\r
 240 \r
 241                 send_osc();\r
 242 \r
 243                 return frame;\r
 244         }\r
 245 \r
 246         void send_osc()\r
 247         {\r
 248                 monitor_subject_        << core::monitor::message("/profiler/time")             % frame_timer_.elapsed() % (1.0/format_desc_.fps);                      \r
 249                                                                 \r
 250                 monitor_subject_        << core::monitor::message("/file/time")                 % (file_frame_number()/fps_) \r
 251                                                                                                                                                         % (file_nb_frames()/fps_)\r
 252                                                         << core::monitor::message("/file/frame")                        % static_cast<int32_t>(file_frame_number())\r
 253                                                                                                                                                         % static_cast<int32_t>(file_nb_frames())\r
 254                                                         << core::monitor::message("/file/fps")                  % fps_\r
 255                                                         << core::monitor::message("/file/path")                 % path_relative_to_media_\r
 256                                                         << core::monitor::message("/loop")                              % input_.loop();\r
 257         }\r
 258         \r
 259         safe_ptr<core::basic_frame> render_specific_frame(uint32_t file_position, int hints)\r
 260         {\r
 261                 // Some trial and error and undeterministic stuff here\r
 262                 static const int NUM_RETRIES = 32;\r
 263                 \r
 264                 if (file_position > 0) // Assume frames are requested in sequential order,\r
 265                                            // therefore no seeking should be necessary for the first frame.\r
 266                 {\r
 267                         input_.seek(file_position > 1 ? file_position - 2: file_position).get();\r
 268                         boost::this_thread::sleep(boost::posix_time::milliseconds(40));\r
 269                 }\r
 270 \r
 271                 for (int i = 0; i < NUM_RETRIES; ++i)\r
 272                 {\r
 273                         boost::this_thread::sleep(boost::posix_time::milliseconds(40));\r
 274                 \r
 275                         auto frame = render_frame(hints);\r
 276 \r
 277                         if (frame.second == std::numeric_limits<uint32_t>::max())\r
 278                         {\r
 279                                 // Retry\r
 280                                 continue;\r
 281                         }\r
 282                         else if (frame.second == file_position + 1 || frame.second == file_position)\r
 283                                 return frame.first;\r
 284                         else if (frame.second > file_position + 1)\r
 285                         {\r
 286                                 CASPAR_LOG(trace) << print() << L" " << frame.second << L" received, wanted " << file_position + 1;\r
 287                                 int64_t adjusted_seek = file_position - (frame.second - file_position + 1);\r
 288 \r
 289                                 if (adjusted_seek > 1 && file_position > 0)\r
 290                                 {\r
 291                                         CASPAR_LOG(trace) << print() << L" adjusting to " << adjusted_seek;\r
 292                                         input_.seek(static_cast<uint32_t>(adjusted_seek) - 1).get();\r
 293                                         boost::this_thread::sleep(boost::posix_time::milliseconds(40));\r
 294                                 }\r
 295                                 else\r
 296                                         return frame.first;\r
 297                         }\r
 298                 }\r
 299 \r
 300                 CASPAR_LOG(trace) << print() << " Giving up finding frame at " << file_position;\r
 301                 return core::basic_frame::empty();\r
 302         }\r
 303 \r
 304         virtual safe_ptr<core::basic_frame> create_thumbnail_frame() override\r
 305         {\r
 306                 auto disable_logging = temporary_disable_logging_for_thread(thumbnail_mode_);\r
 307                 auto total_frames = nb_frames();\r
 308                 auto grid = env::properties().get(L"configuration.thumbnails.video-grid", 2);\r
 309 \r
 310                 if (grid < 1)\r
 311                 {\r
 312                         CASPAR_LOG(error) << L"configuration/thumbnails/video-grid cannot be less than 1";\r
 313                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("configuration/thumbnails/video-grid cannot be less than 1"));\r
 314                 }\r
 315 \r
 316                 if (grid == 1)\r
 317                 {\r
 318                         return render_specific_frame(total_frames / 2, 0/*DEINTERLACE_HINT*/);\r
 319                 }\r
 320 \r
 321                 auto num_snapshots = grid * grid;\r
 322 \r
 323                 std::vector<safe_ptr<core::basic_frame>> frames;\r
 324 \r
 325                 for (int i = 0; i < num_snapshots; ++i)\r
 326                 {\r
 327                         int x = i % grid;\r
 328                         int y = i / grid;\r
 329                         int desired_frame;\r
 330                         \r
 331                         if (i == 0)\r
 332                                 desired_frame = 0; // first\r
 333                         else if (i == num_snapshots - 1)\r
 334                                 desired_frame = total_frames - 1; // last\r
 335                         else\r
 336                                 // evenly distributed across the file.\r
 337                                 desired_frame = total_frames * i / (num_snapshots - 1);\r
 338 \r
 339                         auto frame = render_specific_frame(desired_frame, 0/*DEINTERLACE_HINT*/);\r
 340                         frame->get_frame_transform().fill_scale[0] = 1.0 / static_cast<double>(grid);\r
 341                         frame->get_frame_transform().fill_scale[1] = 1.0 / static_cast<double>(grid);\r
 342                         frame->get_frame_transform().fill_translation[0] = 1.0 / static_cast<double>(grid) * x;\r
 343                         frame->get_frame_transform().fill_translation[1] = 1.0 / static_cast<double>(grid) * y;\r
 344 \r
 345                         frames.push_back(frame);\r
 346                 }\r
 347 \r
 348                 return make_safe<core::basic_frame>(frames);\r
 349         }\r
 350         \r
 351         uint32_t file_frame_number() const\r
 352         {\r
 353                 return video_decoder_ ? video_decoder_->file_frame_number() : 0;\r
 354         }\r
 355 \r
 356         virtual uint32_t nb_frames() const override\r
 357         {\r
 358                 //if(input_.loop())\r
 359                 if(resource_type_ == FFMPEG_DEVICE || resource_type_ == FFMPEG_STREAM || input_.loop()) \r
 360                         return std::numeric_limits<uint32_t>::max();\r
 361 \r
 362                 uint32_t nb_frames = file_nb_frames();\r
 363 \r
 364                 nb_frames = std::min(length_, nb_frames);\r
 365                 nb_frames = muxer_->calc_nb_frames(nb_frames);\r
 366                 \r
 367                 return nb_frames > start_ ? nb_frames - start_ : 0;\r
 368         }\r
 369 \r
 370         uint32_t file_nb_frames() const\r
 371         {\r
 372                 uint32_t file_nb_frames = 0;\r
 373                 file_nb_frames = std::max(file_nb_frames, video_decoder_ ? video_decoder_->nb_frames() : 0);\r
 374                 file_nb_frames = std::max(file_nb_frames, audio_decoder_ ? audio_decoder_->nb_frames() : 0);\r
 375                 return file_nb_frames;\r
 376         }\r
 377         \r
 378         virtual boost::unique_future<std::wstring> call(const std::wstring& param) override\r
 379         {\r
 380                 boost::promise<std::wstring> promise;\r
 381                 promise.set_value(do_call(param));\r
 382                 return promise.get_future();\r
 383         }\r
 384                                 \r
 385         virtual std::wstring print() const override\r
 386         {\r
 387                 return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"|" \r
 388                                                   + print_mode() + L"|" \r
 389                                                   + boost::lexical_cast<std::wstring>(file_frame_number_) + L"/" + boost::lexical_cast<std::wstring>(file_nb_frames()) + L"]";\r
 390         }\r
 391 \r
 392         boost::property_tree::wptree info() const override\r
 393         {\r
 394                 boost::property_tree::wptree info;\r
 395                 info.add(L"type",                               L"ffmpeg-producer");\r
 396                 info.add(L"filename",                   filename_);\r
 397                 info.add(L"width",                              video_decoder_ ? video_decoder_->width() : 0);\r
 398                 info.add(L"height",                             video_decoder_ ? video_decoder_->height() : 0);\r
 399                 info.add(L"progressive",                video_decoder_ ? video_decoder_->is_progressive() : false);\r
 400                 info.add(L"fps",                                fps_);\r
 401                 info.add(L"loop",                               input_.loop());\r
 402                 info.add(L"frame-number",               frame_number_);\r
 403                 auto nb_frames2 = nb_frames();\r
 404                 info.add(L"nb-frames",                  nb_frames2 == std::numeric_limits<int64_t>::max() ? -1 : nb_frames2);\r
 405                 info.add(L"file-frame-number",  file_frame_number_);\r
 406                 info.add(L"file-nb-frames",             file_nb_frames());\r
 407                 return info;\r
 408         }\r
 409 \r
 410         // ffmpeg_producer\r
 411 \r
 412         std::wstring print_mode() const\r
 413         {\r
 414                 return video_decoder_ ? ffmpeg::print_mode(video_decoder_->width(), video_decoder_->height(), fps_, !video_decoder_->is_progressive()) : L"";\r
 415         }\r
 416                                         \r
 417         std::wstring do_call(const std::wstring& param)\r
 418         {\r
 419                 static const boost::wregex loop_exp(L"LOOP\\s*(?<VALUE>\\d?)?", boost::regex::icase);\r
 420                 static const boost::wregex seek_exp(L"SEEK\\s+(?<VALUE>\\d+)", boost::regex::icase);\r
 421                 \r
 422                 boost::wsmatch what;\r
 423                 if(boost::regex_match(param, what, loop_exp))\r
 424                 {\r
 425                         if(!what["VALUE"].str().empty())\r
 426                                 input_.loop(boost::lexical_cast<bool>(what["VALUE"].str()));\r
 427                         return boost::lexical_cast<std::wstring>(input_.loop());\r
 428                 }\r
 429                 if(boost::regex_match(param, what, seek_exp))\r
 430                 {\r
 431                         input_.seek(boost::lexical_cast<uint32_t>(what["VALUE"].str()));\r
 432                         return L"";\r
 433                 }\r
 434 \r
 435                 BOOST_THROW_EXCEPTION(invalid_argument());\r
 436         }\r
 437 \r
 438         void try_decode_frame(int hints)\r
 439         {\r
 440                 std::shared_ptr<AVPacket> pkt;\r
 441 \r
 442                 for(int n = 0; n < 32 && ((video_decoder_ && !video_decoder_->ready()) || (audio_decoder_ && !audio_decoder_->ready())) && input_.try_pop(pkt); ++n)\r
 443                 {\r
 444                         if(video_decoder_)\r
 445                                 video_decoder_->push(pkt);\r
 446                         if(audio_decoder_)\r
 447                                 audio_decoder_->push(pkt);\r
 448                 }\r
 449                 \r
 450                 std::shared_ptr<AVFrame>                        video;\r
 451                 std::shared_ptr<core::audio_buffer> audio;\r
 452 \r
 453                 tbb::parallel_invoke(\r
 454                 [&]\r
 455                 {\r
 456                         if(!muxer_->video_ready() && video_decoder_)    \r
 457                                 video = video_decoder_->poll(); \r
 458                 },\r
 459                 [&]\r
 460                 {               \r
 461                         if(!muxer_->audio_ready() && audio_decoder_)            \r
 462                                 audio = audio_decoder_->poll();         \r
 463                 });\r
 464                 \r
 465                 muxer_->push(video, hints);\r
 466                 muxer_->push(audio);\r
 467 \r
 468                 if(!audio_decoder_)\r
 469                 {\r
 470                         if(video == flush_video())\r
 471                                 muxer_->push(flush_audio());\r
 472                         else if(!muxer_->audio_ready())\r
 473                                 muxer_->push(empty_audio());\r
 474                 }\r
 475 \r
 476                 if(!video_decoder_)\r
 477                 {\r
 478                         if(audio == flush_audio())\r
 479                                 muxer_->push(flush_video(), 0);\r
 480                         else if(!muxer_->video_ready())\r
 481                                 muxer_->push(empty_video(), 0);\r
 482                 }\r
 483                 \r
 484                 size_t file_frame_number = 0;\r
 485                 file_frame_number = std::max(file_frame_number, video_decoder_ ? video_decoder_->file_frame_number() : 0);\r
 486                 //file_frame_number = std::max(file_frame_number, audio_decoder_ ? audio_decoder_->file_frame_number() : 0);\r
 487 \r
 488                 for(auto frame = muxer_->poll(); frame; frame = muxer_->poll())\r
 489                         frame_buffer_.push(std::make_pair(make_safe_ptr(frame), file_frame_number));\r
 490         }\r
 491 \r
 492         core::monitor::source& monitor_output()\r
 493         {\r
 494                 return monitor_subject_;\r
 495         }\r
 496 };\r
 497 \r
 498 safe_ptr<core::frame_producer> create_producer(\r
 499                 const safe_ptr<core::frame_factory>& frame_factory,\r
 500                 const core::parameters& params)\r
 501 {               \r
 502         static const std::vector<std::wstring> invalid_exts = boost::assign::list_of(L".png")(L".tga")(L".bmp")(L".jpg")(L".jpeg")(L".gif")(L".tiff")(L".tif")(L".jp2")(L".jpx")(L".j2k")(L".j2c")(L".swf")(L".ct");\r
 503 \r
 504         // Infer the resource type from the resource_name\r
 505         auto resource_type = FFMPEG_FILE;\r
 506         auto tokens = core::parameters::protocol_split(params.at_original(0));\r
 507         auto filename = params.at_original(0);\r
 508         if (!tokens[0].empty())\r
 509         {\r
 510                 if (tokens[0] == L"dshow")\r
 511                 {\r
 512                         // Camera\r
 513                         resource_type = FFMPEG_DEVICE;\r
 514                         filename = tokens[1];\r
 515                 } else\r
 516                 {\r
 517                         // Stream\r
 518                         resource_type = FFMPEG_STREAM;\r
 519                         filename = params.at_original(0);\r
 520                 }\r
 521         } else\r
 522         {\r
 523                 // File\r
 524                 resource_type = FFMPEG_FILE;\r
 525                 filename = env::media_folder() + L"\\" + tokens[1];\r
 526                 if(!boost::filesystem::exists(filename))\r
 527                         filename = probe_stem(filename);\r
 528 \r
 529                 //TODO fix these?\r
 530                 //vid_params->loop       = params.has(L"LOOP");\r
 531                 //vid_params->start     = params.get(L"SEEK", static_cast<uint32_t>(0));\r
 532         }\r
 533 \r
 534         if(filename.empty())\r
 535                 return core::frame_producer::empty();\r
 536         \r
 537         auto loop               = params.has(L"LOOP");\r
 538         auto start              = params.get(L"SEEK", static_cast<uint32_t>(0));\r
 539         auto length             = params.get(L"LENGTH", std::numeric_limits<uint32_t>::max());\r
 540         auto filter_str = params.get(L"FILTER", L"");   \r
 541         auto custom_channel_order       = params.get(L"CHANNEL_LAYOUT", L"");\r
 542 \r
 543         boost::replace_all(filter_str, L"DEINTERLACE", L"YADIF=0:-1");\r
 544         boost::replace_all(filter_str, L"DEINTERLACE_BOB", L"YADIF=1:-1");\r
 545         \r
 546         ffmpeg_producer_params vid_params;\r
 547         bool haveFFMPEGStartIndicator = false;\r
 548         for (size_t i = 0; i < params.size() - 1; ++i)\r
 549         {\r
 550                 if (!haveFFMPEGStartIndicator && params[i] == L"--")\r
 551                 {\r
 552                         haveFFMPEGStartIndicator = true;\r
 553                         continue;\r
 554                 }\r
 555                 if (haveFFMPEGStartIndicator)\r
 556                 {\r
 557                         auto name = narrow(params.at_original(i++)).substr(1);\r
 558                         auto value = narrow(params.at_original(i));\r
 559                         vid_params.options.push_back(option(name, value));\r
 560                 }\r
 561         }\r
 562 \r
 563         \r
 564         return create_producer_destroy_proxy(make_safe<ffmpeg_producer>(frame_factory, filename, resource_type, filter_str, loop, start, length, false, custom_channel_order, vid_params));\r
 565 }\r
 566 \r
 567 safe_ptr<core::frame_producer> create_thumbnail_producer(\r
 568                 const safe_ptr<core::frame_factory>& frame_factory,\r
 569                 const core::parameters& params)\r
 570 {               \r
 571         static const std::vector<std::wstring> invalid_exts = boost::assign::list_of\r
 572                         (L".png")(L".tga")(L".bmp")(L".jpg")(L".jpeg")(L".gif")(L".tiff")(L".tif")(L".jp2")(L".jpx")(L".j2k")(L".j2c")(L".swf")(L".ct")\r
 573                         (L".wav")(L".mp3"); // audio shall not have thumbnails\r
 574         auto filename = probe_stem(env::media_folder() + L"\\" + params.at_original(0), invalid_exts);\r
 575 \r
 576         if(filename.empty())\r
 577                 return core::frame_producer::empty();\r
 578         \r
 579         auto loop               = false;\r
 580         auto start              = 0;\r
 581         auto length             = std::numeric_limits<uint32_t>::max();\r
 582         auto filter_str = L"";\r
 583 \r
 584         ffmpeg_producer_params vid_params;\r
 585         return make_safe<ffmpeg_producer>(frame_factory, filename, FFMPEG_FILE, filter_str, loop, start, length, true, L"", vid_params);\r
 586 }\r
 587 \r
 588 }}