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 "../producer/tbb_avcodec.h"\r
  29 \r
  30 #include <core/frame/frame.h>\r
  31 #include <core/mixer/audio/audio_util.h>\r
  32 #include <core/consumer/frame_consumer.h>\r
  33 #include <core/video_format.h>\r
  34 \r
  35 #include <common/array.h>\r
  36 #include <common/env.h>\r
  37 #include <common/except.h>\r
  38 #include <common/executor.h>\r
  39 #include <common/diagnostics/graph.h>\r
  40 #include <common/lock.h>\r
  41 #include <common/memory.h>\r
  42 #include <common/param.h>\r
  43 #include <common/utf.h>\r
  44 \r
  45 #include <boost/algorithm/string.hpp>\r
  46 #include <boost/timer.hpp>\r
  47 #include <boost/property_tree/ptree.hpp>\r
  48 #include <boost/filesystem.hpp>\r
  49 #include <boost/range/algorithm.hpp>\r
  50 #include <boost/range/algorithm_ext.hpp>\r
  51 #include <boost/lexical_cast.hpp>\r
  52 \r
  53 #include <tbb/spin_mutex.h>\r
  54 \r
  55 #if defined(_MSC_VER)\r
  56 #pragma warning (push)\r
  57 #pragma warning (disable : 4244)\r
  58 #endif\r
  59 extern "C" \r
  60 {\r
  61         #define __STDC_CONSTANT_MACROS\r
  62         #define __STDC_LIMIT_MACROS\r
  63         #include <libavformat/avformat.h>\r
  64         #include <libswscale/swscale.h>\r
  65         #include <libavutil/opt.h>\r
  66         #include <libavutil/pixdesc.h>\r
  67         #include <libavutil/parseutils.h>\r
  68         #include <libavutil/samplefmt.h>\r
  69         #include <libswresample/swresample.h>\r
  70 }\r
  71 #if defined(_MSC_VER)\r
  72 #pragma warning (pop)\r
  73 #endif\r
  74 \r
  75 namespace caspar { namespace ffmpeg {\r
  76         \r
  77 int av_opt_set(void *obj, const char *name, const char *val, int search_flags)\r
  78 {\r
  79         AVClass* av_class = *(AVClass**)obj;\r
  80 \r
  81         if((strcmp(name, "pix_fmt") == 0 || strcmp(name, "pixel_format") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)\r
  82         {\r
  83                 AVCodecContext* c = (AVCodecContext*)obj;               \r
  84                 auto pix_fmt = av_get_pix_fmt(val);\r
  85                 if(pix_fmt == PIX_FMT_NONE)\r
  86                         return -1;              \r
  87                 c->pix_fmt = pix_fmt;\r
  88                 return 0;\r
  89         }\r
  90         //if((strcmp(name, "r") == 0 || strcmp(name, "frame_rate") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)\r
  91         //{\r
  92         //      AVCodecContext* c = (AVCodecContext*)obj;       \r
  93 \r
  94         //      if(c->codec_type != AVMEDIA_TYPE_VIDEO)\r
  95         //              return -1;\r
  96 \r
  97         //      AVRational rate;\r
  98         //      int ret = av_parse_video_rate(&rate, val);\r
  99         //      if(ret < 0)\r
 100         //              return ret;\r
 101 \r
 102         //      c->time_base.num = rate.den;\r
 103         //      c->time_base.den = rate.num;\r
 104         //      return 0;\r
 105         //}\r
 106 \r
 107         return ::av_opt_set(obj, name, val, search_flags);\r
 108 }\r
 109 \r
 110 struct option\r
 111 {\r
 112         std::string name;\r
 113         std::string value;\r
 114 \r
 115         option(std::string name, std::string value)\r
 116                 : name(std::move(name))\r
 117                 , value(std::move(value))\r
 118         {\r
 119         }\r
 120 };\r
 121         \r
 122 struct output_format\r
 123 {\r
 124         AVOutputFormat* format;\r
 125         int                             width;\r
 126         int                             height;\r
 127         CodecID                 vcodec;\r
 128         CodecID                 acodec;\r
 129         int                             croptop;\r
 130         int                             cropbot;\r
 131 \r
 132         output_format(const core::video_format_desc& format_desc, const std::string& filename, std::vector<option>& options)\r
 133                 : format(av_guess_format(nullptr, filename.c_str(), nullptr))\r
 134                 , width(format_desc.width)\r
 135                 , height(format_desc.height)\r
 136                 , vcodec(CODEC_ID_NONE)\r
 137                 , acodec(CODEC_ID_NONE)\r
 138                 , croptop(0)\r
 139                 , cropbot(0)\r
 140         {\r
 141                 boost::range::remove_erase_if(options, [&](const option& o)\r
 142                 {\r
 143                         return set_opt(o.name, o.value);\r
 144                 });\r
 145                 \r
 146                 if(vcodec == CODEC_ID_NONE)\r
 147                         vcodec = format->video_codec;\r
 148 \r
 149                 if(acodec == CODEC_ID_NONE)\r
 150                         acodec = format->audio_codec;\r
 151                 \r
 152                 if(vcodec == CODEC_ID_NONE)\r
 153                         vcodec = CODEC_ID_H264;\r
 154                 \r
 155                 if(acodec == CODEC_ID_NONE)\r
 156                         acodec = CODEC_ID_PCM_S16LE;\r
 157         }\r
 158         \r
 159         bool set_opt(const std::string& name, const std::string& value)\r
 160         {\r
 161                 //if(name == "target")\r
 162                 //{ \r
 163                 //      enum { PAL, NTSC, FILM, UNKNOWN } norm = UNKNOWN;\r
 164                 //      \r
 165                 //      if(name.find("pal-") != std::string::npos)\r
 166                 //              norm = PAL;\r
 167                 //      else if(name.find("ntsc-") != std::string::npos)\r
 168                 //              norm = NTSC;\r
 169 \r
 170                 //      if(norm == UNKNOWN)\r
 171                 //              CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("target"));\r
 172                 //      \r
 173                 //      if (name.find("-dv") != std::string::npos) \r
 174                 //      {\r
 175                 //              set_opt("f", "dv");\r
 176                 //              set_opt("s", norm == PAL ? "720x576" : "720x480");\r
 177                 //              //set_opt("pix_fmt", name.find("-dv50") != std::string::npos ? "yuv422p" : norm == PAL ? "yuv420p" : "yuv411p");\r
 178                 //              //set_opt("ar", "48000");\r
 179                 //              //set_opt("ac", "2");\r
 180                 //      } \r
 181                 //}\r
 182                 if(name == "f")\r
 183                 {\r
 184                         format = av_guess_format(value.c_str(), nullptr, nullptr);\r
 185 \r
 186                         if(format == nullptr)\r
 187                                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("f"));\r
 188 \r
 189                         return true;\r
 190                 }\r
 191                 else if(name == "vcodec")\r
 192                 {\r
 193                         auto c = avcodec_find_encoder_by_name(value.c_str());\r
 194                         if(c == nullptr)\r
 195                                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("vcodec"));\r
 196 \r
 197                         vcodec = avcodec_find_encoder_by_name(value.c_str())->id;\r
 198                         return true;\r
 199 \r
 200                 }\r
 201                 else if(name == "acodec")\r
 202                 {\r
 203                         auto c = avcodec_find_encoder_by_name(value.c_str());\r
 204                         if(c == nullptr)\r
 205                                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("acodec"));\r
 206 \r
 207                         acodec = avcodec_find_encoder_by_name(value.c_str())->id;\r
 208 \r
 209                         return true;\r
 210                 }\r
 211                 else if(name == "s")\r
 212                 {\r
 213                         if(av_parse_video_size(&width, &height, value.c_str()) < 0)\r
 214                                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("s"));\r
 215                         \r
 216                         return true;\r
 217                 }\r
 218                 else if(name == "croptop")\r
 219                 {\r
 220                         croptop = boost::lexical_cast<int>(value);\r
 221 \r
 222                         return true;\r
 223                 }\r
 224                 else if(name == "cropbot")\r
 225                 {\r
 226                         cropbot = boost::lexical_cast<int>(value);\r
 227 \r
 228                         return true;\r
 229                 }\r
 230                 \r
 231                 return false;\r
 232         }\r
 233 };\r
 234 \r
 235 typedef std::vector<uint8_t, tbb::cache_aligned_allocator<uint8_t>>     byte_vector;\r
 236 \r
 237 struct ffmpeg_consumer : boost::noncopyable\r
 238 {               \r
 239         const spl::shared_ptr<diagnostics::graph>       graph_;\r
 240         const std::string                                                       filename_;              \r
 241         const std::shared_ptr<AVFormatContext>          oc_;\r
 242         const core::video_format_desc                           format_desc_;   \r
 243 \r
 244         monitor::basic_subject                                          event_subject_;\r
 245         \r
 246         tbb::spin_mutex                                                         exception_mutex_;\r
 247         std::exception_ptr                                                      exception_;\r
 248         \r
 249         std::shared_ptr<AVStream>                                       audio_st_;\r
 250         std::shared_ptr<AVStream>                                       video_st_;\r
 251         \r
 252         byte_vector                                                                     picture_buffer_;\r
 253         byte_vector                                                                     audio_buffer_;\r
 254         std::shared_ptr<SwrContext>                                     swr_;\r
 255         std::shared_ptr<SwsContext>                                     sws_;\r
 256 \r
 257         int64_t                                                                         frame_number_;\r
 258 \r
 259         output_format                                                           output_format_;\r
 260         \r
 261         executor                                                                        executor_;\r
 262 public:\r
 263         ffmpeg_consumer(const std::string& filename, const core::video_format_desc& format_desc, std::vector<option> options)\r
 264                 : filename_(filename)\r
 265                 , oc_(avformat_alloc_context(), av_free)\r
 266                 , format_desc_(format_desc)\r
 267                 , frame_number_(0)\r
 268                 , output_format_(format_desc, filename, options)\r
 269                 , executor_(print())\r
 270         {\r
 271                 check_space();\r
 272 \r
 273                 // TODO: Ask stakeholders about case where file already exists.\r
 274                 boost::filesystem::remove(boost::filesystem::path(env::media_folder() + u16(filename))); // Delete the file if it exists\r
 275 \r
 276                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 277                 graph_->set_text(print());\r
 278                 diagnostics::register_graph(graph_);\r
 279 \r
 280                 executor_.set_capacity(8);\r
 281 \r
 282                 oc_->oformat = output_format_.format;\r
 283                                 \r
 284                 strcpy_s(oc_->filename, filename_.c_str());\r
 285                 \r
 286                 //  Add the audio and video streams using the default format codecs     and initialize the codecs.\r
 287                 video_st_ = add_video_stream(options);\r
 288                 audio_st_ = add_audio_stream(options);\r
 289                                 \r
 290                 av_dump_format(oc_.get(), 0, filename_.c_str(), 1);\r
 291                  \r
 292                 // Open the output ffmpeg, if needed.\r
 293                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 294                         THROW_ON_ERROR2(avio_open(&oc_->pb, filename.c_str(), AVIO_FLAG_WRITE), "[ffmpeg_consumer]");\r
 295                                 \r
 296                 THROW_ON_ERROR2(avformat_write_header(oc_.get(), nullptr), "[ffmpeg_consumer]");\r
 297 \r
 298                 if(options.size() > 0)\r
 299                 {\r
 300                         BOOST_FOREACH(auto& option, options)\r
 301                                 CASPAR_LOG(warning) << L"Invalid option: -" << u16(option.name) << L" " << u16(option.value);\r
 302                 }\r
 303 \r
 304                 CASPAR_LOG(info) << print() << L" Successfully Initialized.";   \r
 305         }\r
 306 \r
 307         ~ffmpeg_consumer()\r
 308         {    \r
 309                 executor_.wait();\r
 310                 \r
 311                 LOG_ON_ERROR2(av_write_trailer(oc_.get()), "[ffmpeg_consumer]");\r
 312                 \r
 313                 audio_st_.reset();\r
 314                 video_st_.reset();\r
 315                           \r
 316                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 317                         LOG_ON_ERROR2(avio_close(oc_->pb), "[ffmpeg_consumer]");\r
 318 \r
 319                 CASPAR_LOG(info) << print() << L" Successfully Uninitialized."; \r
 320         }\r
 321         \r
 322         // frame_consumer\r
 323 \r
 324         bool send(core::const_frame& frame)\r
 325         {\r
 326                 auto exception = lock(exception_mutex_, [&]\r
 327                 {\r
 328                         return exception_;\r
 329                 });\r
 330 \r
 331                 if(exception != nullptr)\r
 332                         std::rethrow_exception(exception);\r
 333                         \r
 334                 executor_.begin_invoke([=]\r
 335                 {               \r
 336                         encode(frame);\r
 337                 });\r
 338                 \r
 339                 return true;\r
 340         }\r
 341 \r
 342         std::wstring print() const\r
 343         {\r
 344                 return L"ffmpeg[" + u16(filename_) + L"]";\r
 345         }\r
 346         \r
 347         void subscribe(const monitor::observable::observer_ptr& o)\r
 348         {\r
 349                 event_subject_.subscribe(o);\r
 350         }\r
 351 \r
 352         void unsubscribe(const monitor::observable::observer_ptr& o)\r
 353         {\r
 354                 event_subject_.unsubscribe(o);\r
 355         }               \r
 356 \r
 357 private:\r
 358         std::shared_ptr<AVStream> add_video_stream(std::vector<option>& options)\r
 359         { \r
 360                 if(output_format_.vcodec == CODEC_ID_NONE)\r
 361                         return nullptr;\r
 362 \r
 363                 auto st = av_new_stream(oc_.get(), 0);\r
 364                 if (!st)                \r
 365                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate video-stream.") << boost::errinfo_api_function("av_new_stream"));             \r
 366 \r
 367                 auto encoder = avcodec_find_encoder(output_format_.vcodec);\r
 368                 if (!encoder)\r
 369                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Codec not found."));\r
 370 \r
 371                 auto c = st->codec;\r
 372 \r
 373                 avcodec_get_context_defaults3(c, encoder);\r
 374                                 \r
 375                 c->codec_id                     = output_format_.vcodec;\r
 376                 c->codec_type           = AVMEDIA_TYPE_VIDEO;\r
 377                 c->width                        = output_format_.width;\r
 378                 c->height                       = output_format_.height - output_format_.croptop - output_format_.cropbot;\r
 379                 c->time_base.den        = format_desc_.time_scale;\r
 380                 c->time_base.num        = format_desc_.duration;\r
 381                 c->gop_size                     = 25;\r
 382                 c->flags                   |= format_desc_.field_mode == core::field_mode::progressive ? 0 : (CODEC_FLAG_INTERLACED_ME | CODEC_FLAG_INTERLACED_DCT);\r
 383                 c->pix_fmt                      = c->pix_fmt != PIX_FMT_NONE ? c->pix_fmt : PIX_FMT_YUV420P;\r
 384 \r
 385                 if(c->codec_id == CODEC_ID_PRORES)\r
 386                 {                       \r
 387                         c->bit_rate     = c->width < 1280 ? 63*1000000 : 220*1000000;\r
 388                         c->pix_fmt      = PIX_FMT_YUV422P10;\r
 389                 }\r
 390                 else if(c->codec_id == CODEC_ID_DNXHD)\r
 391                 {\r
 392                         if(c->width < 1280 || c->height < 720)\r
 393                                 CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Unsupported video dimensions."));\r
 394 \r
 395                         c->bit_rate     = 220*1000000;\r
 396                         c->pix_fmt      = PIX_FMT_YUV422P;\r
 397                 }\r
 398                 else if(c->codec_id == CODEC_ID_DVVIDEO)\r
 399                 {\r
 400                         c->width = c->height == 1280 ? 960  : c->width;\r
 401                         \r
 402                         if(format_desc_.format == core::video_format::ntsc)\r
 403                                 c->pix_fmt = PIX_FMT_YUV411P;\r
 404                         else if(format_desc_.format == core::video_format::pal)\r
 405                                 c->pix_fmt = PIX_FMT_YUV420P;\r
 406                         else // dv50\r
 407                                 c->pix_fmt = PIX_FMT_YUV422P;\r
 408                         \r
 409                         if(format_desc_.duration == 1001)                       \r
 410                                 c->width = c->height == 1080 ? 1280 : c->width;                 \r
 411                         else\r
 412                                 c->width = c->height == 1080 ? 1440 : c->width;                 \r
 413                 }\r
 414                 else if(c->codec_id == CODEC_ID_H264)\r
 415                 {                          \r
 416                         c->pix_fmt = PIX_FMT_YUV420P;    \r
 417                         av_opt_set(c->priv_data, "preset", "ultrafast", 0);\r
 418                         av_opt_set(c->priv_data, "tune",   "fastdecode",   0);\r
 419                         av_opt_set(c->priv_data, "crf",    "5",     0);\r
 420                 }\r
 421                 else if(c->codec_id == CODEC_ID_QTRLE)\r
 422                 {\r
 423                         c->pix_fmt = PIX_FMT_ARGB;\r
 424                 }\r
 425                                                                 \r
 426                 boost::range::remove_erase_if(options, [&](const option& o)\r
 427                 {\r
 428                         return o.name.at(0) != 'a' && ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;\r
 429                 });\r
 430                                 \r
 431                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)\r
 432                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 433                 \r
 434                 THROW_ON_ERROR2(tbb_avcodec_open(c, encoder), "[ffmpeg_consumer]");\r
 435 \r
 436                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 437                 {\r
 438                         LOG_ON_ERROR2(tbb_avcodec_close(st->codec), "[ffmpeg_consumer]");\r
 439                         av_freep(&st->codec);\r
 440                         av_freep(&st);\r
 441                 });\r
 442         }\r
 443                 \r
 444         std::shared_ptr<AVStream> add_audio_stream(std::vector<option>& options)\r
 445         {\r
 446                 if(output_format_.acodec == CODEC_ID_NONE)\r
 447                         return nullptr;\r
 448 \r
 449                 auto st = av_new_stream(oc_.get(), 1);\r
 450                 if(!st)\r
 451                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate audio-stream") << boost::errinfo_api_function("av_new_stream"));              \r
 452                 \r
 453                 auto encoder = avcodec_find_encoder(output_format_.acodec);\r
 454                 if (!encoder)\r
 455                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));\r
 456                 \r
 457                 auto c = st->codec;\r
 458 \r
 459                 avcodec_get_context_defaults3(c, encoder);\r
 460 \r
 461                 c->codec_id                     = output_format_.acodec;\r
 462                 c->codec_type           = AVMEDIA_TYPE_AUDIO;\r
 463                 c->sample_rate          = 48000;\r
 464                 c->channels                     = 2;\r
 465                 c->sample_fmt           = AV_SAMPLE_FMT_S16;\r
 466                 c->time_base.num        = 1;\r
 467                 c->time_base.den        = c->sample_rate;\r
 468 \r
 469                 if(output_format_.vcodec == CODEC_ID_FLV1)              \r
 470                         c->sample_rate  = 44100;                \r
 471 \r
 472                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)\r
 473                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 474                                 \r
 475                 boost::range::remove_erase_if(options, [&](const option& o)\r
 476                 {\r
 477                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;\r
 478                 });\r
 479 \r
 480                 THROW_ON_ERROR2(avcodec_open(c, encoder), "[ffmpeg_consumer]");\r
 481 \r
 482                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 483                 {\r
 484                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");;\r
 485                         av_freep(&st->codec);\r
 486                         av_freep(&st);\r
 487                 });\r
 488         }\r
 489   \r
 490         void encode_video_frame(core::const_frame frame)\r
 491         { \r
 492                 if(!video_st_)\r
 493                         return;\r
 494                 \r
 495                 auto enc = video_st_->codec;\r
 496          \r
 497                 auto av_frame                           = convert_video(frame, enc);\r
 498                 av_frame->interlaced_frame      = format_desc_.field_mode != core::field_mode::progressive;\r
 499                 av_frame->top_field_first       = format_desc_.field_mode == core::field_mode::upper;\r
 500                 av_frame->pts                           = frame_number_++;\r
 501 \r
 502                 event_subject_ << monitor::event("frame")       % static_cast<int64_t>(frame_number_)\r
 503                                                                                                         % static_cast<int64_t>(std::numeric_limits<int64_t>::max());\r
 504 \r
 505                 AVPacket pkt;\r
 506                 av_init_packet(&pkt);\r
 507                 pkt.data = nullptr;\r
 508                 pkt.size = 0;\r
 509 \r
 510                 int got_packet = 0;\r
 511                 THROW_ON_ERROR2(avcodec_encode_video2(enc, &pkt, av_frame.get(), &got_packet), "[ffmpeg_consumer]");\r
 512                 std::shared_ptr<AVPacket> guard(&pkt, av_free_packet);\r
 513 \r
 514                 if(!got_packet)\r
 515                         return;\r
 516                  \r
 517                 if (pkt.pts != AV_NOPTS_VALUE)\r
 518                         pkt.pts = av_rescale_q(pkt.pts, enc->time_base, video_st_->time_base);\r
 519                 if (pkt.dts != AV_NOPTS_VALUE)\r
 520                         pkt.dts = av_rescale_q(pkt.dts, enc->time_base, video_st_->time_base);\r
 521                  \r
 522                 pkt.stream_index = video_st_->index;\r
 523                         \r
 524                 THROW_ON_ERROR2(av_interleaved_write_frame(oc_.get(), &pkt), "[ffmpeg_consumer]");\r
 525         }\r
 526                 \r
 527         uint64_t get_channel_layout(AVCodecContext* dec)\r
 528         {\r
 529                 auto layout = (dec->channel_layout && dec->channels == av_get_channel_layout_nb_channels(dec->channel_layout)) ? dec->channel_layout : av_get_default_channel_layout(dec->channels);\r
 530                 return layout;\r
 531         }\r
 532                 \r
 533         void encode_audio_frame(core::const_frame frame)\r
 534         {               \r
 535                 if(!audio_st_)\r
 536                         return;\r
 537                 \r
 538                 auto enc = audio_st_->codec;\r
 539 \r
 540                 boost::push_back(audio_buffer_, convert_audio(frame, enc));\r
 541                         \r
 542                 auto frame_size = enc->frame_size != 0 ? enc->frame_size * enc->channels * av_get_bytes_per_sample(enc->sample_fmt) : static_cast<int>(audio_buffer_.size());\r
 543                         \r
 544                 while(audio_buffer_.size() >= frame_size)\r
 545                 {                       \r
 546                         std::shared_ptr<AVFrame> av_frame(avcodec_alloc_frame(), av_free);\r
 547                         avcodec_get_frame_defaults(av_frame.get());             \r
 548                         av_frame->nb_samples = frame_size / (enc->channels * av_get_bytes_per_sample(enc->sample_fmt));\r
 549 \r
 550                         AVPacket pkt;\r
 551                         av_init_packet(&pkt);\r
 552                         pkt.data = nullptr;\r
 553                         pkt.size = 0;                           \r
 554                         \r
 555                         THROW_ON_ERROR2(avcodec_fill_audio_frame(av_frame.get(), enc->channels, enc->sample_fmt, audio_buffer_.data(), frame_size, 1), "[ffmpeg_consumer]");\r
 556 \r
 557                         int got_packet = 0;\r
 558                         THROW_ON_ERROR2(avcodec_encode_audio2(enc, &pkt, av_frame.get(), &got_packet), "[ffmpeg_consumer]");\r
 559                         std::shared_ptr<AVPacket> guard(&pkt, av_free_packet);\r
 560                                 \r
 561                         audio_buffer_.erase(audio_buffer_.begin(), audio_buffer_.begin() + frame_size);\r
 562 \r
 563                         if(!got_packet)\r
 564                                 return;\r
 565                 \r
 566                         if (pkt.pts != AV_NOPTS_VALUE)\r
 567                                 pkt.pts      = av_rescale_q(pkt.pts, enc->time_base, audio_st_->time_base);\r
 568                         if (pkt.dts != AV_NOPTS_VALUE)\r
 569                                 pkt.dts      = av_rescale_q(pkt.dts, enc->time_base, audio_st_->time_base);\r
 570                         if (pkt.duration > 0)\r
 571                                 pkt.duration = static_cast<int>(av_rescale_q(pkt.duration, enc->time_base, audio_st_->time_base));\r
 572                 \r
 573                         pkt.stream_index = audio_st_->index;\r
 574                                                 \r
 575                         THROW_ON_ERROR2(av_interleaved_write_frame(oc_.get(), &pkt), "[ffmpeg_consumer]");\r
 576                 }\r
 577         }                \r
 578         \r
 579         std::shared_ptr<AVFrame> convert_video(core::const_frame frame, AVCodecContext* c)\r
 580         {\r
 581                 if(!sws_) \r
 582                 {\r
 583                         sws_.reset(sws_getContext(format_desc_.width, \r
 584                                                                           format_desc_.height - output_format_.croptop  - output_format_.cropbot, \r
 585                                                                           PIX_FMT_BGRA,\r
 586                                                                           c->width,\r
 587                                                                           c->height, \r
 588                                                                           c->pix_fmt, \r
 589                                                                           SWS_BICUBIC, nullptr, nullptr, nullptr), \r
 590                                                 sws_freeContext);\r
 591                         if (sws_ == nullptr) \r
 592                                 CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Cannot initialize the conversion context"));\r
 593                 }\r
 594 \r
 595                 std::shared_ptr<AVFrame> in_frame(avcodec_alloc_frame(), av_free);\r
 596 \r
 597                 avpicture_fill(reinterpret_cast<AVPicture*>(in_frame.get()), \r
 598                                            const_cast<uint8_t*>(frame.image_data().begin()),\r
 599                                            PIX_FMT_BGRA, \r
 600                                            format_desc_.width,\r
 601                                            format_desc_.height - output_format_.croptop  - output_format_.cropbot);\r
 602 \r
 603                 for(int n = 0; n < 4; ++n)              \r
 604                         in_frame->data[n] += in_frame->linesize[n] * output_format_.croptop;            \r
 605                                         \r
 606                 picture_buffer_.resize(avpicture_get_size(c->pix_fmt, c->width, c->height));\r
 607 \r
 608                 std::shared_ptr<AVFrame> out_frame(avcodec_alloc_frame(), av_free);\r
 609                 \r
 610                 avpicture_fill(reinterpret_cast<AVPicture*>(out_frame.get()),\r
 611                                            picture_buffer_.data(), \r
 612                                            c->pix_fmt, \r
 613                                            c->width, \r
 614                                            c->height);\r
 615 \r
 616                 sws_scale(sws_.get(), \r
 617                                   in_frame->data, \r
 618                                   in_frame->linesize,\r
 619                                   0, \r
 620                                   format_desc_.height - output_format_.cropbot - output_format_.croptop, \r
 621                                   out_frame->data, \r
 622                                   out_frame->linesize);\r
 623 \r
 624                 return out_frame;\r
 625         }\r
 626         \r
 627         byte_vector convert_audio(core::const_frame& frame, AVCodecContext* c)\r
 628         {\r
 629                 if(!swr_) \r
 630                 {\r
 631                         swr_ = std::shared_ptr<SwrContext>(swr_alloc_set_opts(nullptr,\r
 632                                                                                 get_channel_layout(c), c->sample_fmt, c->sample_rate,\r
 633                                                                                 av_get_default_channel_layout(format_desc_.audio_channels), AV_SAMPLE_FMT_S32, format_desc_.audio_sample_rate,\r
 634                                                                                 0, nullptr), [](SwrContext* p){swr_free(&p);});\r
 635 \r
 636                         if(!swr_)\r
 637                                 CASPAR_THROW_EXCEPTION(bad_alloc());\r
 638 \r
 639                         THROW_ON_ERROR2(swr_init(swr_.get()), "[audio_decoder]");\r
 640                 }\r
 641                                 \r
 642                 byte_vector buffer(48000);\r
 643 \r
 644                 const uint8_t* in[]  = {reinterpret_cast<const uint8_t*>(frame.audio_data().data())};\r
 645                 uint8_t*       out[] = {buffer.data()};\r
 646 \r
 647                 auto channel_samples = swr_convert(swr_.get(), \r
 648                                                                                    out, static_cast<int>(buffer.size()) / c->channels / av_get_bytes_per_sample(c->sample_fmt), \r
 649                                                                                    in, static_cast<int>(frame.audio_data().size()/format_desc_.audio_channels));\r
 650 \r
 651                 buffer.resize(channel_samples * c->channels * av_get_bytes_per_sample(c->sample_fmt));  \r
 652 \r
 653                 return buffer;\r
 654         }\r
 655 \r
 656         void check_space()\r
 657         {\r
 658                 auto space = boost::filesystem::space(boost::filesystem::path(filename_).parent_path());\r
 659                 if(space.available < 512*1000000)\r
 660                         BOOST_THROW_EXCEPTION(file_write_error() << msg_info("out of space"));\r
 661         }\r
 662 \r
 663         void encode(const core::const_frame& frame)\r
 664         {\r
 665                 try\r
 666                 {\r
 667                         if(frame_number_ % 25 == 0)\r
 668                                 check_space();\r
 669 \r
 670                         boost::timer frame_timer;\r
 671 \r
 672                         encode_video_frame(frame);\r
 673                         encode_audio_frame(frame);\r
 674 \r
 675                         graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);\r
 676                 }\r
 677                 catch(...)\r
 678                 {                       \r
 679                         lock(exception_mutex_, [&]\r
 680                         {\r
 681                                 exception_ = std::current_exception();\r
 682                         });\r
 683                 }\r
 684         }\r
 685 };\r
 686 \r
 687 struct ffmpeg_consumer_proxy : public core::frame_consumer\r
 688 {\r
 689         const std::wstring                              filename_;\r
 690         const std::vector<option>               options_;\r
 691 \r
 692         std::unique_ptr<ffmpeg_consumer> consumer_;\r
 693 \r
 694 public:\r
 695 \r
 696         ffmpeg_consumer_proxy(const std::wstring& filename, const std::vector<option>& options)\r
 697                 : filename_(filename)\r
 698                 , options_(options)\r
 699         {\r
 700         }\r
 701         \r
 702         virtual void initialize(const core::video_format_desc& format_desc, int)\r
 703         {\r
 704                 if(consumer_)\r
 705                         BOOST_THROW_EXCEPTION(invalid_operation() << msg_info("Cannot reinitialize ffmpeg-consumer."));\r
 706 \r
 707                 consumer_.reset(new ffmpeg_consumer(u8(filename_), format_desc, options_));\r
 708         }\r
 709         \r
 710         bool send(core::const_frame frame) override\r
 711         {\r
 712                 return consumer_->send(frame);\r
 713         }\r
 714         \r
 715         std::wstring print() const override\r
 716         {\r
 717                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";\r
 718         }\r
 719 \r
 720         std::wstring name() const override\r
 721         {\r
 722                 return L"file";\r
 723         }\r
 724 \r
 725         boost::property_tree::wptree info() const override\r
 726         {\r
 727                 boost::property_tree::wptree info;\r
 728                 info.add(L"type", L"file");\r
 729                 info.add(L"filename", filename_);\r
 730                 return info;\r
 731         }\r
 732                 \r
 733         bool has_synchronization_clock() const override\r
 734         {\r
 735                 return false;\r
 736         }\r
 737 \r
 738         int buffer_depth() const override\r
 739         {\r
 740                 return 1;\r
 741         }\r
 742 \r
 743         int index() const override\r
 744         {\r
 745                 return 200;\r
 746         }\r
 747 \r
 748         void subscribe(const monitor::observable::observer_ptr& o) override\r
 749         {\r
 750                 consumer_->subscribe(o);\r
 751         }\r
 752 \r
 753         void unsubscribe(const monitor::observable::observer_ptr& o) override\r
 754         {\r
 755                 consumer_->unsubscribe(o);\r
 756         }               \r
 757 };      \r
 758 spl::shared_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)\r
 759 {\r
 760         if(params.size() < 1 || params[0] != L"FILE")\r
 761                 return core::frame_consumer::empty();\r
 762         \r
 763         auto filename   = (params.size() > 1 ? params[1] : L"");\r
 764                         \r
 765         std::vector<option> options;\r
 766         \r
 767         if(params.size() >= 3)\r
 768         {\r
 769                 for(auto opt_it = params.begin()+2; opt_it != params.end();)\r
 770                 {\r
 771                         auto name  = u8(boost::trim_copy(boost::to_lower_copy(*opt_it++))).substr(1);\r
 772                         auto value = u8(boost::trim_copy(boost::to_lower_copy(*opt_it++)));\r
 773                                 \r
 774                         if(value == "h264")\r
 775                                 value = "libx264";\r
 776                         else if(value == "dvcpro")\r
 777                                 value = "dvvideo";\r
 778 \r
 779                         options.push_back(option(name, value));\r
 780                 }\r
 781         }\r
 782                 \r
 783         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + filename, options);\r
 784 }\r
 785 \r
 786 spl::shared_ptr<core::frame_consumer> create_consumer(const boost::property_tree::wptree& ptree)\r
 787 {\r
 788         auto filename   = ptree.get<std::wstring>(L"path");\r
 789         auto codec              = ptree.get(L"vcodec", L"libx264");\r
 790 \r
 791         std::vector<option> options;\r
 792         options.push_back(option("vcodec", u8(codec)));\r
 793         \r
 794         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + filename, options);\r
 795 }\r
 796 \r
 797 }}\r