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