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 std::string                                               filename_;\r
 240                 \r
 241         const std::shared_ptr<AVFormatContext>  oc_;\r
 242         const core::video_format_desc                   format_desc_;\r
 243         \r
 244         const spl::shared_ptr<diagnostics::graph>               graph_;\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         std::wstring print() const\r
 323         {\r
 324                 return L"ffmpeg[" + u16(filename_) + L"]";\r
 325         }\r
 326 \r
 327         std::shared_ptr<AVStream> add_video_stream(std::vector<option>& options)\r
 328         { \r
 329                 if(output_format_.vcodec == CODEC_ID_NONE)\r
 330                         return nullptr;\r
 331 \r
 332                 auto st = av_new_stream(oc_.get(), 0);\r
 333                 if (!st)                \r
 334                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate video-stream.") << boost::errinfo_api_function("av_new_stream"));             \r
 335 \r
 336                 auto encoder = avcodec_find_encoder(output_format_.vcodec);\r
 337                 if (!encoder)\r
 338                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Codec not found."));\r
 339 \r
 340                 auto c = st->codec;\r
 341 \r
 342                 avcodec_get_context_defaults3(c, encoder);\r
 343                                 \r
 344                 c->codec_id                     = output_format_.vcodec;\r
 345                 c->codec_type           = AVMEDIA_TYPE_VIDEO;\r
 346                 c->width                        = output_format_.width;\r
 347                 c->height                       = output_format_.height - output_format_.croptop - output_format_.cropbot;\r
 348                 c->time_base.den        = format_desc_.time_scale;\r
 349                 c->time_base.num        = format_desc_.duration;\r
 350                 c->gop_size                     = 25;\r
 351                 c->flags                   |= format_desc_.field_mode == core::field_mode::progressive ? 0 : (CODEC_FLAG_INTERLACED_ME | CODEC_FLAG_INTERLACED_DCT);\r
 352                 c->pix_fmt                      = c->pix_fmt != PIX_FMT_NONE ? c->pix_fmt : PIX_FMT_YUV420P;\r
 353 \r
 354                 if(c->codec_id == CODEC_ID_PRORES)\r
 355                 {                       \r
 356                         c->bit_rate     = c->width < 1280 ? 63*1000000 : 220*1000000;\r
 357                         c->pix_fmt      = PIX_FMT_YUV422P10;\r
 358                 }\r
 359                 else if(c->codec_id == CODEC_ID_DNXHD)\r
 360                 {\r
 361                         if(c->width < 1280 || c->height < 720)\r
 362                                 CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Unsupported video dimensions."));\r
 363 \r
 364                         c->bit_rate     = 220*1000000;\r
 365                         c->pix_fmt      = PIX_FMT_YUV422P;\r
 366                 }\r
 367                 else if(c->codec_id == CODEC_ID_DVVIDEO)\r
 368                 {\r
 369                         c->width = c->height == 1280 ? 960  : c->width;\r
 370                         \r
 371                         if(format_desc_.format == core::video_format::ntsc)\r
 372                                 c->pix_fmt = PIX_FMT_YUV411P;\r
 373                         else if(format_desc_.format == core::video_format::pal)\r
 374                                 c->pix_fmt = PIX_FMT_YUV420P;\r
 375                         else // dv50\r
 376                                 c->pix_fmt = PIX_FMT_YUV422P;\r
 377                         \r
 378                         if(format_desc_.duration == 1001)                       \r
 379                                 c->width = c->height == 1080 ? 1280 : c->width;                 \r
 380                         else\r
 381                                 c->width = c->height == 1080 ? 1440 : c->width;                 \r
 382                 }\r
 383                 else if(c->codec_id == CODEC_ID_H264)\r
 384                 {                          \r
 385                         c->pix_fmt = PIX_FMT_YUV420P;    \r
 386                         av_opt_set(c->priv_data, "preset", "ultrafast", 0);\r
 387                         av_opt_set(c->priv_data, "tune",   "fastdecode",   0);\r
 388                         av_opt_set(c->priv_data, "crf",    "5",     0);\r
 389                 }\r
 390                 else if(c->codec_id == CODEC_ID_QTRLE)\r
 391                 {\r
 392                         c->pix_fmt = PIX_FMT_ARGB;\r
 393                 }\r
 394                                                                 \r
 395                 boost::range::remove_erase_if(options, [&](const option& o)\r
 396                 {\r
 397                         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
 398                 });\r
 399                                 \r
 400                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)\r
 401                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 402                 \r
 403                 THROW_ON_ERROR2(tbb_avcodec_open(c, encoder), "[ffmpeg_consumer]");\r
 404 \r
 405                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 406                 {\r
 407                         LOG_ON_ERROR2(tbb_avcodec_close(st->codec), "[ffmpeg_consumer]");\r
 408                         av_freep(&st->codec);\r
 409                         av_freep(&st);\r
 410                 });\r
 411         }\r
 412                 \r
 413         std::shared_ptr<AVStream> add_audio_stream(std::vector<option>& options)\r
 414         {\r
 415                 if(output_format_.acodec == CODEC_ID_NONE)\r
 416                         return nullptr;\r
 417 \r
 418                 auto st = av_new_stream(oc_.get(), 1);\r
 419                 if(!st)\r
 420                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate audio-stream") << boost::errinfo_api_function("av_new_stream"));              \r
 421                 \r
 422                 auto encoder = avcodec_find_encoder(output_format_.acodec);\r
 423                 if (!encoder)\r
 424                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));\r
 425                 \r
 426                 auto c = st->codec;\r
 427 \r
 428                 avcodec_get_context_defaults3(c, encoder);\r
 429 \r
 430                 c->codec_id                     = output_format_.acodec;\r
 431                 c->codec_type           = AVMEDIA_TYPE_AUDIO;\r
 432                 c->sample_rate          = 48000;\r
 433                 c->channels                     = 2;\r
 434                 c->sample_fmt           = AV_SAMPLE_FMT_S16;\r
 435                 c->time_base.num        = 1;\r
 436                 c->time_base.den        = c->sample_rate;\r
 437 \r
 438                 if(output_format_.vcodec == CODEC_ID_FLV1)              \r
 439                         c->sample_rate  = 44100;                \r
 440 \r
 441                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)\r
 442                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 443                                 \r
 444                 boost::range::remove_erase_if(options, [&](const option& o)\r
 445                 {\r
 446                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;\r
 447                 });\r
 448 \r
 449                 THROW_ON_ERROR2(avcodec_open(c, encoder), "[ffmpeg_consumer]");\r
 450 \r
 451                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 452                 {\r
 453                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");;\r
 454                         av_freep(&st->codec);\r
 455                         av_freep(&st);\r
 456                 });\r
 457         }\r
 458   \r
 459         void encode_video_frame(core::const_frame frame)\r
 460         { \r
 461                 if(!video_st_)\r
 462                         return;\r
 463                 \r
 464                 auto enc = video_st_->codec;\r
 465          \r
 466                 auto av_frame                           = convert_video(frame, enc);\r
 467                 av_frame->interlaced_frame      = format_desc_.field_mode != core::field_mode::progressive;\r
 468                 av_frame->top_field_first       = format_desc_.field_mode == core::field_mode::upper;\r
 469                 av_frame->pts                           = frame_number_++;\r
 470 \r
 471                 AVPacket pkt;\r
 472                 av_init_packet(&pkt);\r
 473                 pkt.data = nullptr;\r
 474                 pkt.size = 0;\r
 475 \r
 476                 int got_packet = 0;\r
 477                 THROW_ON_ERROR2(avcodec_encode_video2(enc, &pkt, av_frame.get(), &got_packet), "[ffmpeg_consumer]");\r
 478                 std::shared_ptr<AVPacket> guard(&pkt, av_free_packet);\r
 479 \r
 480                 if(!got_packet)\r
 481                         return;\r
 482                  \r
 483                 if (pkt.pts != AV_NOPTS_VALUE)\r
 484                         pkt.pts = av_rescale_q(pkt.pts, enc->time_base, video_st_->time_base);\r
 485                 if (pkt.dts != AV_NOPTS_VALUE)\r
 486                         pkt.dts = av_rescale_q(pkt.dts, enc->time_base, video_st_->time_base);\r
 487                  \r
 488                 pkt.stream_index = video_st_->index;\r
 489                         \r
 490                 THROW_ON_ERROR2(av_interleaved_write_frame(oc_.get(), &pkt), "[ffmpeg_consumer]");\r
 491         }\r
 492                 \r
 493         uint64_t get_channel_layout(AVCodecContext* dec)\r
 494         {\r
 495                 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
 496                 return layout;\r
 497         }\r
 498                 \r
 499         void encode_audio_frame(core::const_frame frame)\r
 500         {               \r
 501                 if(!audio_st_)\r
 502                         return;\r
 503                 \r
 504                 auto enc = audio_st_->codec;\r
 505 \r
 506                 boost::push_back(audio_buffer_, convert_audio(frame, enc));\r
 507                         \r
 508                 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
 509                         \r
 510                 while(audio_buffer_.size() >= frame_size)\r
 511                 {                       \r
 512                         std::shared_ptr<AVFrame> av_frame(avcodec_alloc_frame(), av_free);\r
 513                         avcodec_get_frame_defaults(av_frame.get());             \r
 514                         av_frame->nb_samples = frame_size / (enc->channels * av_get_bytes_per_sample(enc->sample_fmt));\r
 515 \r
 516                         AVPacket pkt;\r
 517                         av_init_packet(&pkt);\r
 518                         pkt.data = nullptr;\r
 519                         pkt.size = 0;                           \r
 520                         \r
 521                         THROW_ON_ERROR2(avcodec_fill_audio_frame(av_frame.get(), enc->channels, enc->sample_fmt, audio_buffer_.data(), frame_size, 1), "[ffmpeg_consumer]");\r
 522 \r
 523                         int got_packet = 0;\r
 524                         THROW_ON_ERROR2(avcodec_encode_audio2(enc, &pkt, av_frame.get(), &got_packet), "[ffmpeg_consumer]");\r
 525                         std::shared_ptr<AVPacket> guard(&pkt, av_free_packet);\r
 526                                 \r
 527                         audio_buffer_.erase(audio_buffer_.begin(), audio_buffer_.begin() + frame_size);\r
 528 \r
 529                         if(!got_packet)\r
 530                                 return;\r
 531                 \r
 532                         if (pkt.pts != AV_NOPTS_VALUE)\r
 533                                 pkt.pts      = av_rescale_q(pkt.pts, enc->time_base, audio_st_->time_base);\r
 534                         if (pkt.dts != AV_NOPTS_VALUE)\r
 535                                 pkt.dts      = av_rescale_q(pkt.dts, enc->time_base, audio_st_->time_base);\r
 536                         if (pkt.duration > 0)\r
 537                                 pkt.duration = static_cast<int>(av_rescale_q(pkt.duration, enc->time_base, audio_st_->time_base));\r
 538                 \r
 539                         pkt.stream_index = audio_st_->index;\r
 540                                                 \r
 541                         THROW_ON_ERROR2(av_interleaved_write_frame(oc_.get(), &pkt), "[ffmpeg_consumer]");\r
 542                 }\r
 543         }                \r
 544         \r
 545         std::shared_ptr<AVFrame> convert_video(core::const_frame frame, AVCodecContext* c)\r
 546         {\r
 547                 if(!sws_) \r
 548                 {\r
 549                         sws_.reset(sws_getContext(format_desc_.width, \r
 550                                                                           format_desc_.height - output_format_.croptop  - output_format_.cropbot, \r
 551                                                                           PIX_FMT_BGRA,\r
 552                                                                           c->width,\r
 553                                                                           c->height, \r
 554                                                                           c->pix_fmt, \r
 555                                                                           SWS_BICUBIC, nullptr, nullptr, nullptr), \r
 556                                                 sws_freeContext);\r
 557                         if (sws_ == nullptr) \r
 558                                 CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Cannot initialize the conversion context"));\r
 559                 }\r
 560 \r
 561                 std::shared_ptr<AVFrame> in_frame(avcodec_alloc_frame(), av_free);\r
 562 \r
 563                 avpicture_fill(reinterpret_cast<AVPicture*>(in_frame.get()), \r
 564                                            const_cast<uint8_t*>(frame.image_data().begin()),\r
 565                                            PIX_FMT_BGRA, \r
 566                                            format_desc_.width,\r
 567                                            format_desc_.height - output_format_.croptop  - output_format_.cropbot);\r
 568 \r
 569                 for(int n = 0; n < 4; ++n)              \r
 570                         in_frame->data[n] += in_frame->linesize[n] * output_format_.croptop;            \r
 571                                         \r
 572                 picture_buffer_.resize(avpicture_get_size(c->pix_fmt, c->width, c->height));\r
 573 \r
 574                 std::shared_ptr<AVFrame> out_frame(avcodec_alloc_frame(), av_free);\r
 575                 \r
 576                 avpicture_fill(reinterpret_cast<AVPicture*>(out_frame.get()),\r
 577                                            picture_buffer_.data(), \r
 578                                            c->pix_fmt, \r
 579                                            c->width, \r
 580                                            c->height);\r
 581 \r
 582                 sws_scale(sws_.get(), \r
 583                                   in_frame->data, \r
 584                                   in_frame->linesize,\r
 585                                   0, \r
 586                                   format_desc_.height - output_format_.cropbot - output_format_.croptop, \r
 587                                   out_frame->data, \r
 588                                   out_frame->linesize);\r
 589 \r
 590                 return out_frame;\r
 591         }\r
 592         \r
 593         byte_vector convert_audio(core::const_frame& frame, AVCodecContext* c)\r
 594         {\r
 595                 if(!swr_) \r
 596                 {\r
 597                         swr_ = std::shared_ptr<SwrContext>(swr_alloc_set_opts(nullptr,\r
 598                                                                                 get_channel_layout(c), c->sample_fmt, c->sample_rate,\r
 599                                                                                 av_get_default_channel_layout(format_desc_.audio_channels), AV_SAMPLE_FMT_S32, format_desc_.audio_sample_rate,\r
 600                                                                                 0, nullptr), [](SwrContext* p){swr_free(&p);});\r
 601 \r
 602                         if(!swr_)\r
 603                                 CASPAR_THROW_EXCEPTION(bad_alloc());\r
 604 \r
 605                         THROW_ON_ERROR2(swr_init(swr_.get()), "[audio_decoder]");\r
 606                 }\r
 607                                 \r
 608                 byte_vector buffer(48000);\r
 609 \r
 610                 const uint8_t* in[]  = {reinterpret_cast<const uint8_t*>(frame.audio_data().data())};\r
 611                 uint8_t*       out[] = {buffer.data()};\r
 612 \r
 613                 auto channel_samples = swr_convert(swr_.get(), \r
 614                                                                                    out, static_cast<int>(buffer.size()) / c->channels / av_get_bytes_per_sample(c->sample_fmt), \r
 615                                                                                    in, static_cast<int>(frame.audio_data().size()/format_desc_.audio_channels));\r
 616 \r
 617                 buffer.resize(channel_samples * c->channels * av_get_bytes_per_sample(c->sample_fmt));  \r
 618 \r
 619                 return buffer;\r
 620         }\r
 621 \r
 622         void check_space()\r
 623         {\r
 624                 auto space = boost::filesystem::space(boost::filesystem::path(filename_).parent_path());\r
 625                 if(space.available < 512*1000000)\r
 626                         BOOST_THROW_EXCEPTION(file_write_error() << msg_info("out of space"));\r
 627         }\r
 628 \r
 629         void encode(const core::const_frame& frame)\r
 630         {\r
 631                 try\r
 632                 {\r
 633                         if(frame_number_ % 25 == 0)\r
 634                                 check_space();\r
 635 \r
 636                         boost::timer frame_timer;\r
 637 \r
 638                         encode_video_frame(frame);\r
 639                         encode_audio_frame(frame);\r
 640 \r
 641                         graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);\r
 642                 }\r
 643                 catch(...)\r
 644                 {                       \r
 645                         lock(exception_mutex_, [&]\r
 646                         {\r
 647                                 exception_ = std::current_exception();\r
 648                         });\r
 649                 }\r
 650         }\r
 651 \r
 652         bool send(core::const_frame& frame)\r
 653         {\r
 654                 auto exception = lock(exception_mutex_, [&]\r
 655                 {\r
 656                         return exception_;\r
 657                 });\r
 658 \r
 659                 if(exception != nullptr)\r
 660                         std::rethrow_exception(exception);\r
 661                         \r
 662                 executor_.begin_invoke([=]\r
 663                 {               \r
 664                         encode(frame);\r
 665                 });\r
 666                 \r
 667                 return true;\r
 668         }\r
 669 };\r
 670 \r
 671 struct ffmpeg_consumer_proxy : public core::frame_consumer\r
 672 {\r
 673         const std::wstring                              filename_;\r
 674         const std::vector<option>               options_;\r
 675 \r
 676         std::unique_ptr<ffmpeg_consumer> consumer_;\r
 677 \r
 678 public:\r
 679 \r
 680         ffmpeg_consumer_proxy(const std::wstring& filename, const std::vector<option>& options)\r
 681                 : filename_(filename)\r
 682                 , options_(options)\r
 683         {\r
 684         }\r
 685         \r
 686         virtual void initialize(const core::video_format_desc& format_desc, int)\r
 687         {\r
 688                 if(consumer_)\r
 689                         BOOST_THROW_EXCEPTION(invalid_operation() << msg_info("Cannot reinitialize ffmpeg-consumer."));\r
 690 \r
 691                 consumer_.reset(new ffmpeg_consumer(u8(filename_), format_desc, options_));\r
 692         }\r
 693         \r
 694         bool send(core::const_frame frame) override\r
 695         {\r
 696                 return consumer_->send(frame);\r
 697         }\r
 698         \r
 699         std::wstring print() const override\r
 700         {\r
 701                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";\r
 702         }\r
 703 \r
 704         std::wstring name() const override\r
 705         {\r
 706                 return L"file";\r
 707         }\r
 708 \r
 709         boost::property_tree::wptree info() const override\r
 710         {\r
 711                 boost::property_tree::wptree info;\r
 712                 info.add(L"type", L"file");\r
 713                 info.add(L"filename", filename_);\r
 714                 return info;\r
 715         }\r
 716                 \r
 717         bool has_synchronization_clock() const override\r
 718         {\r
 719                 return false;\r
 720         }\r
 721 \r
 722         int buffer_depth() const override\r
 723         {\r
 724                 return 1;\r
 725         }\r
 726 \r
 727         int index() const override\r
 728         {\r
 729                 return 200;\r
 730         }\r
 731 };      \r
 732 spl::shared_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)\r
 733 {\r
 734         if(params.size() < 1 || params[0] != L"FILE")\r
 735                 return core::frame_consumer::empty();\r
 736         \r
 737         auto filename   = (params.size() > 1 ? params[1] : L"");\r
 738                         \r
 739         std::vector<option> options;\r
 740         \r
 741         if(params.size() >= 3)\r
 742         {\r
 743                 for(auto opt_it = params.begin()+2; opt_it != params.end();)\r
 744                 {\r
 745                         auto name  = u8(boost::trim_copy(boost::to_lower_copy(*opt_it++))).substr(1);\r
 746                         auto value = u8(boost::trim_copy(boost::to_lower_copy(*opt_it++)));\r
 747                                 \r
 748                         if(value == "h264")\r
 749                                 value = "libx264";\r
 750                         else if(value == "dvcpro")\r
 751                                 value = "dvvideo";\r
 752 \r
 753                         options.push_back(option(name, value));\r
 754                 }\r
 755         }\r
 756                 \r
 757         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + filename, options);\r
 758 }\r
 759 \r
 760 spl::shared_ptr<core::frame_consumer> create_consumer(const boost::property_tree::wptree& ptree)\r
 761 {\r
 762         auto filename   = ptree.get<std::wstring>(L"path");\r
 763         auto codec              = ptree.get(L"vcodec", L"libx264");\r
 764 \r
 765         std::vector<option> options;\r
 766         options.push_back(option("vcodec", u8(codec)));\r
 767         \r
 768         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + filename, options);\r
 769 }\r
 770 \r
 771 }}\r