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