git.sesse.net Git - casparcg/blob - modules/ffmpeg/consumer/ffmpeg_consumer.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_error.h"\r
  25 \r
  26 #include "ffmpeg_consumer.h"\r
  27 \r
  28 #include <core/mixer/read_frame.h>\r
  29 #include <core/mixer/audio/audio_util.h>\r
  30 #include <core/consumer/frame_consumer.h>\r
  31 #include <core/video_format.h>\r
  32 \r
  33 #include <common/concurrency/executor.h>\r
  34 #include <common/diagnostics/graph.h>\r
  35 #include <common/env.h>\r
  36 #include <common/utility/string.h>\r
  37 #include <common/utility/param.h>\r
  38 \r
  39 #include <boost/algorithm/string.hpp>\r
  40 #include <boost/timer.hpp>\r
  41 #include <boost/property_tree/ptree.hpp>\r
  42 \r
  43 #include <tbb/cache_aligned_allocator.h>\r
  44 #include <tbb/parallel_invoke.h>\r
  45 \r
  46 #include <string>\r
  47 \r
  48 #if defined(_MSC_VER)\r
  49 #pragma warning (push)\r
  50 #pragma warning (disable : 4244)\r
  51 #endif\r
  52 extern "C" \r
  53 {\r
  54         #define __STDC_CONSTANT_MACROS\r
  55         #define __STDC_LIMIT_MACROS\r
  56         #include <libavformat/avformat.h>\r
  57         #include <libswscale/swscale.h>\r
  58         #include <libavutil/opt.h>\r
  59         #include <libavutil/pixdesc.h>\r
  60 }\r
  61 #if defined(_MSC_VER)\r
  62 #pragma warning (pop)\r
  63 #endif\r
  64 \r
  65 namespace caspar { namespace ffmpeg {\r
  66 \r
  67 struct option\r
  68 {\r
  69         std::string name;\r
  70         std::string value;\r
  71 \r
  72         option(std::string name, std::string value)\r
  73                 : name(std::move(name))\r
  74                 , value(std::move(value))\r
  75         {\r
  76         }\r
  77 };\r
  78         \r
  79 void set_format(AVOutputFormat*& format, const std::string& value)\r
  80 {\r
  81         format = av_guess_format(value.c_str(), nullptr, nullptr);\r
  82 \r
  83         if(format == nullptr)\r
  84                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("f"));        \r
  85 }\r
  86 \r
  87 bool parse_format(AVOutputFormat*& format, std::vector<option>& options)\r
  88 {       \r
  89         auto format_it = std::find_if(options.begin(), options.end(), [](const option& o)\r
  90         {\r
  91                 return o.name == "f" || o.name == "format";\r
  92         });\r
  93 \r
  94         if(format_it == options.end())\r
  95                 return false;\r
  96 \r
  97         set_format(format, format_it->value);\r
  98 \r
  99         options.erase(format_it);\r
 100 \r
 101         return true;\r
 102 }\r
 103 \r
 104 void set_vcodec(CodecID& vcodec, const std::string& value)\r
 105 {       \r
 106         vcodec = avcodec_find_encoder_by_name(value.c_str())->id;\r
 107         if(vcodec == CODEC_ID_NONE)\r
 108                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("vcodec"));\r
 109 }\r
 110 \r
 111 bool parse_vcodec(CodecID& vcodec, std::vector<option>& options)\r
 112 {\r
 113         auto vcodec_it = std::find_if(options.begin(), options.end(), [](const option& o)\r
 114         {\r
 115                 return o.name == "vcodec";\r
 116         });\r
 117 \r
 118         if(vcodec_it == options.end())\r
 119                 return false;\r
 120         \r
 121         set_vcodec(vcodec, vcodec_it->value);\r
 122 \r
 123         options.erase(vcodec_it);\r
 124 \r
 125         return true;\r
 126 }\r
 127 \r
 128 void set_pix_fmt(AVCodecContext* vcodec, const std::string& value)\r
 129 {\r
 130         auto pix_fmt = av_get_pix_fmt(value.c_str());\r
 131         if(pix_fmt == PIX_FMT_NONE)\r
 132                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("pix_fmt"));\r
 133 \r
 134         vcodec->pix_fmt = pix_fmt;\r
 135 }\r
 136 \r
 137 bool parse_pix_fmt(AVCodecContext* vcodec, std::vector<option>& options)\r
 138 {\r
 139         auto pix_fmt_it = std::find_if(options.begin(), options.end(), [](const option& o)\r
 140         {\r
 141                 return o.name == "pix_fmt" || o.name == "pixel_format";\r
 142         });\r
 143         \r
 144         if(pix_fmt_it == options.end())\r
 145                 return false;\r
 146 \r
 147         set_pix_fmt(vcodec, pix_fmt_it->value);\r
 148         \r
 149         options.erase(pix_fmt_it);\r
 150 \r
 151         return true;\r
 152 }\r
 153 \r
 154 struct ffmpeg_consumer : boost::noncopyable\r
 155 {               \r
 156         const std::string                                               filename_;\r
 157                 \r
 158         const std::shared_ptr<AVFormatContext>  oc_;\r
 159         const core::video_format_desc                   format_desc_;\r
 160         \r
 161         const safe_ptr<diagnostics::graph>              graph_;\r
 162         boost::timer                                                    frame_timer_;\r
 163         boost::timer                                                    write_timer_;\r
 164 \r
 165         executor                                                                executor_;\r
 166         executor                                                                file_write_executor_;\r
 167 \r
 168         // Audio\r
 169         std::shared_ptr<AVStream>                               audio_st_;\r
 170         \r
 171         // Video\r
 172         std::shared_ptr<AVStream>                               video_st_;\r
 173 \r
 174         std::vector<uint8_t>                                    video_outbuf_;\r
 175         std::vector<uint8_t>                                    picture_buf_;\r
 176         std::shared_ptr<SwsContext>                             sws_;\r
 177 \r
 178         int64_t                                                                 frame_number_;\r
 179         \r
 180 public:\r
 181         ffmpeg_consumer(const std::string& filename, const core::video_format_desc& format_desc, std::vector<option> options)\r
 182                 : filename_(filename)\r
 183                 , video_outbuf_(1920*1080*8)\r
 184                 , oc_(avformat_alloc_context(), av_free)\r
 185                 , format_desc_(format_desc)\r
 186                 , executor_(print())\r
 187                 , file_write_executor_(print() + L"/output")\r
 188                 , frame_number_(0)\r
 189         {\r
 190                 // TODO: Ask stakeholders about case where file already exists.\r
 191                 boost::filesystem2::remove(boost::filesystem2::wpath(env::media_folder() + widen(filename))); // Delete the file if it exists\r
 192 \r
 193                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 194                 graph_->set_color("write-time", diagnostics::color(0.5f, 0.5f, 0.1f));\r
 195                 graph_->set_text(print());\r
 196                 diagnostics::register_graph(graph_);\r
 197 \r
 198                 executor_.set_capacity(8);\r
 199                 file_write_executor_.set_capacity(8);\r
 200 \r
 201                 oc_->oformat = av_guess_format(nullptr, filename_.c_str(), nullptr);\r
 202                 if (!oc_->oformat)\r
 203                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not find suitable output format."));\r
 204                 \r
 205                 parse_format(oc_->oformat, options);\r
 206 \r
 207                 auto vcodec = oc_->oformat->video_codec;\r
 208                 parse_vcodec(vcodec, options);\r
 209                 \r
 210                 THROW_ON_ERROR2(av_set_parameters(oc_.get(), nullptr), "[ffmpeg_consumer]");\r
 211 \r
 212                 strcpy_s(oc_->filename, filename_.c_str());\r
 213                 \r
 214                 //  Add the audio and video streams using the default format codecs     and initialize the codecs .\r
 215                 video_st_ = add_video_stream(vcodec, options);\r
 216                 audio_st_ = add_audio_stream();\r
 217                                 \r
 218                 dump_format(oc_.get(), 0, filename_.c_str(), 1);\r
 219                  \r
 220                 // Open the output ffmpeg, if needed.\r
 221                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 222                         THROW_ON_ERROR2(avio_open(&oc_->pb, filename_.c_str(), URL_WRONLY), "[ffmpeg_consumer]");\r
 223                                 \r
 224                 THROW_ON_ERROR2(av_write_header(oc_.get()), "[ffmpeg_consumer]");\r
 225 \r
 226                 CASPAR_LOG(info) << print() << L" Successfully Initialized.";   \r
 227         }\r
 228 \r
 229         ~ffmpeg_consumer()\r
 230         {    \r
 231                 executor_.stop();\r
 232                 executor_.join();\r
 233 \r
 234                 file_write_executor_.stop();\r
 235                 file_write_executor_.join();\r
 236                 \r
 237                 LOG_ON_ERROR2(av_write_trailer(oc_.get()), "[ffmpeg_consumer]");\r
 238                 \r
 239                 audio_st_.reset();\r
 240                 video_st_.reset();\r
 241                           \r
 242                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 243                         LOG_ON_ERROR2(avio_close(oc_->pb), "[ffmpeg_consumer]"); // Close the output ffmpeg.\r
 244 \r
 245                 CASPAR_LOG(info) << print() << L" Successfully Uninitialized."; \r
 246         }\r
 247                         \r
 248         std::wstring print() const\r
 249         {\r
 250                 return L"ffmpeg[" + widen(filename_) + L"]";\r
 251         }\r
 252 \r
 253         std::shared_ptr<AVStream> add_video_stream(CodecID vcodec, std::vector<option>& options)\r
 254         { \r
 255                 auto st = av_new_stream(oc_.get(), 0);\r
 256                 if (!st)                \r
 257                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate video-stream") << boost::errinfo_api_function("av_new_stream"));               \r
 258 \r
 259                 auto encoder = avcodec_find_encoder(vcodec);\r
 260                 if (!encoder)\r
 261                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));\r
 262 \r
 263                 auto c = st->codec;\r
 264 \r
 265                 avcodec_get_context_defaults3(c, encoder);\r
 266                                 \r
 267                 c->codec_id                     = vcodec;\r
 268                 c->codec_type           = AVMEDIA_TYPE_VIDEO;\r
 269                 c->width                        = format_desc_.width;\r
 270                 c->height                       = format_desc_.height;\r
 271                 c->time_base.den        = format_desc_.time_scale;\r
 272                 c->time_base.num        = format_desc_.duration;\r
 273                 c->gop_size                     = 25;\r
 274                 c->flags                   |= format_desc_.field_mode == core::field_mode::progressive ? 0 : (CODEC_FLAG_INTERLACED_ME | CODEC_FLAG_INTERLACED_DCT);\r
 275 \r
 276                 if(c->codec_id == CODEC_ID_PRORES)\r
 277                 {                       \r
 278                         c->bit_rate     = format_desc_.width < 1280 ? 63*1000000 : 220*1000000;\r
 279                         c->pix_fmt      = PIX_FMT_YUV422P10;\r
 280                 }\r
 281                 else if(c->codec_id == CODEC_ID_DNXHD)\r
 282                 {\r
 283                         if(format_desc_.width < 1280 || format_desc_.height < 720)\r
 284                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("unsupported dimension"));\r
 285 \r
 286                         c->bit_rate     = 220*1000000;\r
 287                         c->pix_fmt      = PIX_FMT_YUV422P;\r
 288                 }\r
 289                 else if(c->codec_id == CODEC_ID_DVVIDEO)\r
 290                 {\r
 291                         c->bit_rate     = format_desc_.width < 1280 ? 50*1000000 : 100*1000000;\r
 292                         c->width = format_desc_.height == 1280 ? 960  : c->width;\r
 293                         \r
 294                         if(format_desc_.format == core::video_format::ntsc)\r
 295                                 c->pix_fmt = PIX_FMT_YUV411P;\r
 296                         else if(format_desc_.format == core::video_format::pal)\r
 297                                 c->pix_fmt = PIX_FMT_YUV420P;\r
 298 \r
 299                         if(c->bit_rate >= 50*1000000) // dv50\r
 300                                 c->pix_fmt = PIX_FMT_YUV422P;\r
 301                         \r
 302                         if(format_desc_.duration == 1001)                       \r
 303                                 c->width = format_desc_.height == 1080 ? 1280 : c->width;                       \r
 304                         else\r
 305                                 c->width = format_desc_.height == 1080 ? 1440 : c->width;                       \r
 306                 }\r
 307                 else if(c->codec_id == CODEC_ID_H264)\r
 308                 {                          \r
 309                         c->pix_fmt = PIX_FMT_YUV420P;    \r
 310                         if(options.empty())\r
 311                         {\r
 312                                 av_opt_set(c->priv_data, "preset", "ultrafast", 0);\r
 313                                 av_opt_set(c->priv_data, "tune",   "fastdecode",   0);\r
 314                                 av_opt_set(c->priv_data, "crf",    "5",     0);\r
 315                         }\r
 316                 }\r
 317                 else if(c->codec_id == CODEC_ID_QTRLE)\r
 318                 {\r
 319                         c->pix_fmt = PIX_FMT_ARGB;\r
 320                 }\r
 321                 else\r
 322                 {\r
 323                         BOOST_THROW_EXCEPTION(invalid_argument() << msg_info("Unsupported output parameters."));\r
 324                 }\r
 325 \r
 326                 parse_pix_fmt(c, options);\r
 327                 \r
 328                 c->max_b_frames = 0; // b-frames not supported.\r
 329 \r
 330                 BOOST_FOREACH(auto& option, options)\r
 331                         THROW_ON_ERROR2(av_opt_set(c, option.name.c_str(), option.value.c_str(), AV_OPT_SEARCH_CHILDREN), "[ffmpeg_consumer]");\r
 332                                 \r
 333                 if(oc_->oformat->flags & AVFMT_GLOBALHEADER)\r
 334                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 335                 \r
 336                 c->thread_count = boost::thread::hardware_concurrency();\r
 337                 THROW_ON_ERROR2(avcodec_open(c, encoder), "[ffmpeg_consumer]");\r
 338 \r
 339                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 340                 {\r
 341                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");\r
 342                         av_freep(&st->codec);\r
 343                         av_freep(&st);\r
 344                 });\r
 345         }\r
 346         \r
 347         std::shared_ptr<AVStream> add_audio_stream()\r
 348         {\r
 349                 auto st = av_new_stream(oc_.get(), 1);\r
 350                 if(!st)\r
 351                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate audio-stream") << boost::errinfo_api_function("av_new_stream"));               \r
 352 \r
 353                 st->codec->codec_id                     = CODEC_ID_PCM_S16LE;\r
 354                 st->codec->codec_type           = AVMEDIA_TYPE_AUDIO;\r
 355                 st->codec->sample_rate          = 48000;\r
 356                 st->codec->channels                     = 2;\r
 357                 st->codec->sample_fmt           = SAMPLE_FMT_S16;\r
 358                 \r
 359                 if(oc_->oformat->flags & AVFMT_GLOBALHEADER)\r
 360                         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 361                 \r
 362                 auto codec = avcodec_find_encoder(st->codec->codec_id);\r
 363                 if (!codec)\r
 364                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));\r
 365 \r
 366                 THROW_ON_ERROR2(avcodec_open(st->codec, codec), "[ffmpeg_consumer]");\r
 367 \r
 368                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 369                 {\r
 370                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");;\r
 371                         av_freep(&st->codec);\r
 372                         av_freep(&st);\r
 373                 });\r
 374         }\r
 375 \r
 376         std::shared_ptr<AVFrame> convert_video_frame(const safe_ptr<core::read_frame>& frame, AVCodecContext* c)\r
 377         {\r
 378                 if(!sws_) \r
 379                 {\r
 380                         sws_.reset(sws_getContext(format_desc_.width, format_desc_.height, PIX_FMT_BGRA, c->width, c->height, c->pix_fmt, SWS_BICUBIC, nullptr, nullptr, nullptr), sws_freeContext);\r
 381                         if (sws_ == nullptr) \r
 382                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Cannot initialize the conversion context"));\r
 383                 }\r
 384 \r
 385                 std::shared_ptr<AVFrame> av_frame(avcodec_alloc_frame(), av_free);\r
 386                 avpicture_fill(reinterpret_cast<AVPicture*>(av_frame.get()), const_cast<uint8_t*>(frame->image_data().begin()), PIX_FMT_BGRA, format_desc_.width, format_desc_.height);\r
 387                                 \r
 388                 std::shared_ptr<AVFrame> local_av_frame(avcodec_alloc_frame(), av_free);\r
 389                 picture_buf_.resize(avpicture_get_size(c->pix_fmt, format_desc_.width, format_desc_.height));\r
 390                 avpicture_fill(reinterpret_cast<AVPicture*>(local_av_frame.get()), picture_buf_.data(), c->pix_fmt, format_desc_.width, format_desc_.height);\r
 391 \r
 392                 sws_scale(sws_.get(), av_frame->data, av_frame->linesize, 0, c->height, local_av_frame->data, local_av_frame->linesize);\r
 393 \r
 394                 return local_av_frame;\r
 395         }\r
 396   \r
 397         std::shared_ptr<AVPacket> encode_video_frame(const safe_ptr<core::read_frame>& frame)\r
 398         { \r
 399                 auto c = video_st_->codec;\r
 400  \r
 401                 auto av_frame = convert_video_frame(frame, c);\r
 402                 av_frame->interlaced_frame      = format_desc_.field_mode != core::field_mode::progressive;\r
 403                 av_frame->top_field_first       = format_desc_.field_mode == core::field_mode::upper;\r
 404                 av_frame->pts                           = frame_number_++;\r
 405 \r
 406                 int out_size = THROW_ON_ERROR2(avcodec_encode_video(c, video_outbuf_.data(), video_outbuf_.size(), av_frame.get()), "[ffmpeg_consumer]");\r
 407                 if(out_size > 0)\r
 408                 {\r
 409                         safe_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 410                         {\r
 411                                 av_free_packet(p);\r
 412                                 delete p;\r
 413                         });\r
 414                         av_init_packet(pkt.get());\r
 415  \r
 416                         if (c->coded_frame->pts != AV_NOPTS_VALUE)\r
 417                                 pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, video_st_->time_base);\r
 418 \r
 419                         if(c->coded_frame->key_frame)\r
 420                                 pkt->flags |= AV_PKT_FLAG_KEY;\r
 421 \r
 422                         pkt->stream_index       = video_st_->index;\r
 423                         pkt->data                       = video_outbuf_.data();\r
 424                         pkt->size                       = out_size;\r
 425  \r
 426                         av_dup_packet(pkt.get());\r
 427                         return pkt;\r
 428                 }       \r
 429                 return nullptr;\r
 430         }\r
 431                 \r
 432         std::shared_ptr<AVPacket> encode_audio_frame(const safe_ptr<core::read_frame>& frame)\r
 433         {                       \r
 434                 auto c = audio_st_->codec;\r
 435 \r
 436                 auto audio_data = core::audio_32_to_16(frame->audio_data());\r
 437                 \r
 438                 safe_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 439                 {\r
 440                         av_free_packet(p);\r
 441                         delete p;\r
 442                 });\r
 443                 av_init_packet(pkt.get());\r
 444                 \r
 445                 if (c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE)\r
 446                         pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, audio_st_->time_base);\r
 447 \r
 448                 pkt->flags               |= AV_PKT_FLAG_KEY;\r
 449                 pkt->stream_index = audio_st_->index;\r
 450                 pkt->size                = audio_data.size()*2;\r
 451                 pkt->data                = reinterpret_cast<uint8_t*>(audio_data.data());\r
 452                 \r
 453                 av_dup_packet(pkt.get());\r
 454                 return pkt;\r
 455         }\r
 456                  \r
 457         void send(const safe_ptr<core::read_frame>& frame)\r
 458         {\r
 459                 executor_.begin_invoke([=]\r
 460                 {               \r
 461                         frame_timer_.restart();\r
 462 \r
 463                         auto video = encode_video_frame(frame);\r
 464                         auto audio = encode_audio_frame(frame);\r
 465 \r
 466                         graph_->set_value("frame-time", frame_timer_.elapsed()*format_desc_.fps*0.5);\r
 467                         \r
 468                         file_write_executor_.begin_invoke([=]\r
 469                         {\r
 470                                 write_timer_.restart();\r
 471 \r
 472                                 if(video)\r
 473                                         av_write_frame(oc_.get(), video.get());\r
 474                                 if(audio)\r
 475                                         av_write_frame(oc_.get(), audio.get());\r
 476 \r
 477                                 graph_->set_value("write-time", write_timer_.elapsed()*format_desc_.fps*0.5);\r
 478                         });\r
 479                 });\r
 480         }\r
 481 };\r
 482 \r
 483 struct ffmpeg_consumer_proxy : public core::frame_consumer\r
 484 {\r
 485         const std::wstring                              filename_;\r
 486         const std::vector<option>               options_;\r
 487 \r
 488         std::unique_ptr<ffmpeg_consumer> consumer_;\r
 489 \r
 490 public:\r
 491 \r
 492         ffmpeg_consumer_proxy(const std::wstring& filename, const std::vector<option>& options)\r
 493                 : filename_(filename)\r
 494                 , options_(options)\r
 495         {\r
 496         }\r
 497         \r
 498         virtual void initialize(const core::video_format_desc& format_desc, int)\r
 499         {\r
 500                 consumer_.reset();\r
 501                 consumer_.reset(new ffmpeg_consumer(narrow(filename_), format_desc, options_));\r
 502         }\r
 503         \r
 504         virtual bool send(const safe_ptr<core::read_frame>& frame) override\r
 505         {\r
 506                 consumer_->send(frame);\r
 507                 return true;\r
 508         }\r
 509         \r
 510         virtual std::wstring print() const override\r
 511         {\r
 512                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";\r
 513         }\r
 514 \r
 515         virtual boost::property_tree::wptree info() const override\r
 516         {\r
 517                 boost::property_tree::wptree info;\r
 518                 info.add(L"type", L"ffmpeg-consumer");\r
 519                 info.add(L"filename", filename_);\r
 520                 return info;\r
 521         }\r
 522                 \r
 523         virtual bool has_synchronization_clock() const override\r
 524         {\r
 525                 return false;\r
 526         }\r
 527 \r
 528         virtual size_t buffer_depth() const override\r
 529         {\r
 530                 return 1;\r
 531         }\r
 532 \r
 533         virtual int index() const override\r
 534         {\r
 535                 return 200;\r
 536         }\r
 537 };      \r
 538 \r
 539 safe_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)\r
 540 {\r
 541         if(params.size() < 1 || params[0] != L"FILE")\r
 542                 return core::frame_consumer::empty();\r
 543         \r
 544         auto filename   = (params.size() > 1 ? params[1] : L"");\r
 545                         \r
 546         std::vector<option> options;\r
 547         \r
 548         if(params.size() >= 3)\r
 549         {\r
 550                 for(auto opt_it = params.begin()+2; opt_it != params.end();)\r
 551                 {\r
 552                         auto name  = narrow(boost::trim_copy(boost::to_lower_copy(*opt_it++))).substr(1);\r
 553                         auto value = narrow(boost::trim_copy(boost::to_lower_copy(*opt_it++)));\r
 554                                 \r
 555                         if(value == "h264")\r
 556                                 value = "libx264";\r
 557                         else if(value == "dvcpro")\r
 558                                 value = "dvvideo";\r
 559 \r
 560                         options.push_back(option(name, value));\r
 561                 }\r
 562         }\r
 563                 \r
 564         return make_safe<ffmpeg_consumer_proxy>(env::media_folder() + filename, options);\r
 565 }\r
 566 \r
 567 safe_ptr<core::frame_consumer> create_consumer(const boost::property_tree::wptree& ptree)\r
 568 {\r
 569         auto filename   = ptree.get<std::wstring>(L"path");\r
 570         auto codec              = ptree.get(L"vcodec", L"libx264");\r
 571 \r
 572         std::vector<option> options;\r
 573         options.push_back(option("vcodec", narrow(codec)));\r
 574         \r
 575         return make_safe<ffmpeg_consumer_proxy>(env::media_folder() + filename, options);\r
 576 }\r
 577 \r
 578 }}\r