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/audio/audio_resampler.h"\r
  29 \r
  30 #include <core/mixer/read_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/concurrency/executor.h>\r
  36 #include <common/concurrency/future_util.h>\r
  37 #include <common/diagnostics/graph.h>\r
  38 #include <common/env.h>\r
  39 #include <common/utility/string.h>\r
  40 #include <common/utility/param.h>\r
  41 \r
  42 #include <boost/algorithm/string.hpp>\r
  43 #include <boost/timer.hpp>\r
  44 #include <boost/property_tree/ptree.hpp>\r
  45 \r
  46 #include <tbb/cache_aligned_allocator.h>\r
  47 #include <tbb/parallel_invoke.h>\r
  48 \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 <string>\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 }\r
  69 #if defined(_MSC_VER)\r
  70 #pragma warning (pop)\r
  71 #endif\r
  72 \r
  73 namespace caspar { namespace ffmpeg {\r
  74         \r
  75 int av_opt_set(void *obj, const char *name, const char *val, int search_flags)\r
  76 {\r
  77         AVClass* av_class = *(AVClass**)obj;\r
  78 \r
  79         if((strcmp(name, "pix_fmt") == 0 || strcmp(name, "pixel_format") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)\r
  80         {\r
  81                 AVCodecContext* c = (AVCodecContext*)obj;               \r
  82                 auto pix_fmt = av_get_pix_fmt(val);\r
  83                 if(pix_fmt == PIX_FMT_NONE)\r
  84                         return -1;              \r
  85                 c->pix_fmt = pix_fmt;\r
  86                 return 0;\r
  87         }\r
  88         if((strcmp(name, "r") == 0 || strcmp(name, "frame_rate") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)\r
  89         {\r
  90                 AVCodecContext* c = (AVCodecContext*)obj;       \r
  91 \r
  92                 if(c->codec_type != AVMEDIA_TYPE_VIDEO)\r
  93                         return -1;\r
  94 \r
  95                 AVRational rate;\r
  96                 int ret = av_parse_video_rate(&rate, val);\r
  97                 if(ret < 0)\r
  98                         return ret;\r
  99 \r
 100                 c->time_base.num = rate.den;\r
 101                 c->time_base.den = rate.num;\r
 102                 return 0;\r
 103         }\r
 104 \r
 105         return ::av_opt_set(obj, name, val, search_flags);\r
 106 }\r
 107 \r
 108 struct option\r
 109 {\r
 110         std::string name;\r
 111         std::string value;\r
 112 \r
 113         option(std::string name, std::string value)\r
 114                 : name(std::move(name))\r
 115                 , value(std::move(value))\r
 116         {\r
 117         }\r
 118 };\r
 119         \r
 120 struct output_format\r
 121 {\r
 122         AVOutputFormat* format;\r
 123         int                             width;\r
 124         int                             height;\r
 125         CodecID                 vcodec;\r
 126         CodecID                 acodec;\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         {\r
 135                 boost::range::remove_erase_if(options, [&](const option& o)\r
 136                 {\r
 137                         return set_opt(o.name, o.value);\r
 138                 });\r
 139                 \r
 140                 if(vcodec == CODEC_ID_NONE)\r
 141                         vcodec = format->video_codec;\r
 142 \r
 143                 if(acodec == CODEC_ID_NONE)\r
 144                         acodec = format->audio_codec;\r
 145                 \r
 146                 if(vcodec == CODEC_ID_NONE)\r
 147                         vcodec = CODEC_ID_H264;\r
 148                 \r
 149                 if(acodec == CODEC_ID_NONE)\r
 150                         acodec = CODEC_ID_PCM_S16LE;\r
 151         }\r
 152         \r
 153         bool set_opt(const std::string& name, const std::string& value)\r
 154         {\r
 155                 //if(name == "target")\r
 156                 //{ \r
 157                 //      enum { PAL, NTSC, FILM, UNKNOWN } norm = UNKNOWN;\r
 158                 //      \r
 159                 //      if(name.find("pal-") != std::string::npos)\r
 160                 //              norm = PAL;\r
 161                 //      else if(name.find("ntsc-") != std::string::npos)\r
 162                 //              norm = NTSC;\r
 163 \r
 164                 //      if(norm == UNKNOWN)\r
 165                 //              BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("target"));\r
 166                 //      \r
 167                 //      if (name.find("-dv") != std::string::npos) \r
 168                 //      {\r
 169                 //              set_opt("f", "dv");\r
 170                 //              set_opt("s", norm == PAL ? "720x576" : "720x480");\r
 171                 //              //set_opt("pix_fmt", name.find("-dv50") != std::string::npos ? "yuv422p" : norm == PAL ? "yuv420p" : "yuv411p");\r
 172                 //              //set_opt("ar", "48000");\r
 173                 //              //set_opt("ac", "2");\r
 174                 //      } \r
 175                 //}\r
 176                 if(name == "f")\r
 177                 {\r
 178                         format = av_guess_format(value.c_str(), nullptr, nullptr);\r
 179 \r
 180                         if(format == nullptr)\r
 181                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("f"));\r
 182 \r
 183                         return true;\r
 184                 }\r
 185                 else if(name == "vcodec")\r
 186                 {\r
 187                         auto c = avcodec_find_encoder_by_name(value.c_str());\r
 188                         if(c == nullptr)\r
 189                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("vcodec"));\r
 190 \r
 191                         vcodec = avcodec_find_encoder_by_name(value.c_str())->id;\r
 192                         return true;\r
 193 \r
 194                 }\r
 195                 else if(name == "acodec")\r
 196                 {\r
 197                         auto c = avcodec_find_encoder_by_name(value.c_str());\r
 198                         if(c == nullptr)\r
 199                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("acodec"));\r
 200 \r
 201                         acodec = avcodec_find_encoder_by_name(value.c_str())->id;\r
 202 \r
 203                         return true;\r
 204                 }\r
 205                 else if(name == "s")\r
 206                 {\r
 207                         if(av_parse_video_size(&width, &height, value.c_str()) < 0)\r
 208                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("s"));\r
 209                         \r
 210                         return true;\r
 211                 }\r
 212 \r
 213                 return false;\r
 214         }\r
 215 };\r
 216 \r
 217 typedef std::vector<uint8_t, tbb::cache_aligned_allocator<uint8_t>>     byte_vector;\r
 218 \r
 219 struct ffmpeg_consumer : boost::noncopyable\r
 220 {               \r
 221         const std::string                                               filename_;\r
 222                 \r
 223         const std::shared_ptr<AVFormatContext>  oc_;\r
 224         const core::video_format_desc                   format_desc_;\r
 225         \r
 226         const safe_ptr<diagnostics::graph>              graph_;\r
 227 \r
 228         executor                                                                encode_executor_;\r
 229         \r
 230         std::shared_ptr<AVStream>                               audio_st_;\r
 231         std::shared_ptr<AVStream>                               video_st_;\r
 232         \r
 233         byte_vector                                                             audio_outbuf_;\r
 234         byte_vector                                                             audio_buf_;\r
 235         byte_vector                                                             video_outbuf_;\r
 236         byte_vector                                                             picture_buf_;\r
 237         std::shared_ptr<audio_resampler>                swr_;\r
 238         std::shared_ptr<SwsContext>                             sws_;\r
 239 \r
 240         int64_t                                                                 in_frame_number_;\r
 241         int64_t                                                                 out_frame_number_;\r
 242 \r
 243         output_format                                                   output_format_;\r
 244         \r
 245 public:\r
 246         ffmpeg_consumer(const std::string& filename, const core::video_format_desc& format_desc, std::vector<option> options)\r
 247                 : filename_(filename)\r
 248                 , video_outbuf_(1920*1080*8)\r
 249                 , audio_outbuf_(10000)\r
 250                 , oc_(avformat_alloc_context(), av_free)\r
 251                 , format_desc_(format_desc)\r
 252                 , encode_executor_(print())\r
 253                 , in_frame_number_(0)\r
 254                 , out_frame_number_(0)\r
 255                 , output_format_(format_desc, filename, options)\r
 256         {\r
 257                 // TODO: Ask stakeholders about case where file already exists.\r
 258                 boost::filesystem2::remove(boost::filesystem2::wpath(env::media_folder() + widen(filename))); // Delete the file if it exists\r
 259 \r
 260                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 261                 graph_->set_text(print());\r
 262                 diagnostics::register_graph(graph_);\r
 263 \r
 264                 encode_executor_.set_capacity(8);\r
 265 \r
 266                 oc_->oformat = output_format_.format;\r
 267                                 \r
 268                 THROW_ON_ERROR2(av_set_parameters(oc_.get(), nullptr), "[ffmpeg_consumer]");\r
 269 \r
 270                 strcpy_s(oc_->filename, filename_.c_str());\r
 271                 \r
 272                 //  Add the audio and video streams using the default format codecs     and initialize the codecs.\r
 273                 auto options2 = options;\r
 274                 video_st_ = add_video_stream(options2);\r
 275                 audio_st_ = add_audio_stream(options);\r
 276                                 \r
 277                 dump_format(oc_.get(), 0, filename_.c_str(), 1);\r
 278                  \r
 279                 // Open the output ffmpeg, if needed.\r
 280                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 281                         THROW_ON_ERROR2(avio_open(&oc_->pb, filename_.c_str(), URL_WRONLY), "[ffmpeg_consumer]");\r
 282                                 \r
 283                 THROW_ON_ERROR2(av_write_header(oc_.get()), "[ffmpeg_consumer]");\r
 284 \r
 285                 if(options.size() > 0)\r
 286                 {\r
 287                         BOOST_FOREACH(auto& option, options)\r
 288                                 CASPAR_LOG(warning) << L"Invalid option: -" << widen(option.name) << L" " << widen(option.value);\r
 289                 }\r
 290 \r
 291                 CASPAR_LOG(info) << print() << L" Successfully Initialized.";   \r
 292         }\r
 293 \r
 294         ~ffmpeg_consumer()\r
 295         {    \r
 296                 encode_executor_.stop();\r
 297                 encode_executor_.join();\r
 298                 \r
 299                 LOG_ON_ERROR2(av_write_trailer(oc_.get()), "[ffmpeg_consumer]");\r
 300                 \r
 301                 audio_st_.reset();\r
 302                 video_st_.reset();\r
 303                           \r
 304                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 305                         LOG_ON_ERROR2(avio_close(oc_->pb), "[ffmpeg_consumer]"); // Close the output ffmpeg.\r
 306 \r
 307                 CASPAR_LOG(info) << print() << L" Successfully Uninitialized."; \r
 308         }\r
 309                         \r
 310         std::wstring print() const\r
 311         {\r
 312                 return L"ffmpeg[" + widen(filename_) + L"]";\r
 313         }\r
 314 \r
 315         std::shared_ptr<AVStream> add_video_stream(std::vector<option>& options)\r
 316         { \r
 317                 if(output_format_.vcodec == CODEC_ID_NONE)\r
 318                         return nullptr;\r
 319 \r
 320                 auto st = av_new_stream(oc_.get(), 0);\r
 321                 if (!st)                \r
 322                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate video-stream.") << boost::errinfo_api_function("av_new_stream"));              \r
 323 \r
 324                 auto encoder = avcodec_find_encoder(output_format_.vcodec);\r
 325                 if (!encoder)\r
 326                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Codec not found."));\r
 327 \r
 328                 auto c = st->codec;\r
 329 \r
 330                 avcodec_get_context_defaults3(c, encoder);\r
 331                                 \r
 332                 c->codec_id                     = output_format_.vcodec;\r
 333                 c->codec_type           = AVMEDIA_TYPE_VIDEO;\r
 334                 c->width                        = output_format_.width;\r
 335                 c->height                       = output_format_.height;\r
 336                 c->time_base.den        = format_desc_.time_scale;\r
 337                 c->time_base.num        = format_desc_.duration;\r
 338                 c->gop_size                     = 25;\r
 339                 c->flags                   |= format_desc_.field_mode == core::field_mode::progressive ? 0 : (CODEC_FLAG_INTERLACED_ME | CODEC_FLAG_INTERLACED_DCT);\r
 340                 if(c->pix_fmt == PIX_FMT_NONE)\r
 341                         c->pix_fmt = PIX_FMT_YUV420P;\r
 342 \r
 343                 if(c->codec_id == CODEC_ID_PRORES)\r
 344                 {                       \r
 345                         c->bit_rate     = c->width < 1280 ? 63*1000000 : 220*1000000;\r
 346                         c->pix_fmt      = PIX_FMT_YUV422P10;\r
 347                 }\r
 348                 else if(c->codec_id == CODEC_ID_DNXHD)\r
 349                 {\r
 350                         if(c->width < 1280 || c->height < 720)\r
 351                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Unsupported video dimensions."));\r
 352 \r
 353                         c->bit_rate     = 220*1000000;\r
 354                         c->pix_fmt      = PIX_FMT_YUV422P;\r
 355                 }\r
 356                 else if(c->codec_id == CODEC_ID_DVVIDEO)\r
 357                 {\r
 358                         c->width = c->height == 1280 ? 960  : c->width;\r
 359                         \r
 360                         if(format_desc_.format == core::video_format::ntsc)\r
 361                                 c->pix_fmt = PIX_FMT_YUV411P;\r
 362                         else if(format_desc_.format == core::video_format::pal)\r
 363                                 c->pix_fmt = PIX_FMT_YUV420P;\r
 364                         else // dv50\r
 365                                 c->pix_fmt = PIX_FMT_YUV422P;\r
 366                         \r
 367                         if(format_desc_.duration == 1001)                       \r
 368                                 c->width = c->height == 1080 ? 1280 : c->width;                 \r
 369                         else\r
 370                                 c->width = c->height == 1080 ? 1440 : c->width;                 \r
 371                 }\r
 372                 else if(c->codec_id == CODEC_ID_H264)\r
 373                 {                          \r
 374                         c->pix_fmt = PIX_FMT_YUV420P;    \r
 375                         if(options.empty())\r
 376                         {\r
 377                                 av_opt_set(c->priv_data, "preset", "ultrafast", 0);\r
 378                                 av_opt_set(c->priv_data, "tune",   "fastdecode",   0);\r
 379                                 av_opt_set(c->priv_data, "crf",    "5",     0);\r
 380                         }\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                 c->max_b_frames = 0; // b-frames not supported.\r
 388                                 \r
 389                 boost::range::remove_erase_if(options, [&](const option& o)\r
 390                 {\r
 391                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1 ||\r
 392                                    ffmpeg::av_opt_set(c->priv_data, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;\r
 393                 });\r
 394                                 \r
 395                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)\r
 396                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 397                 \r
 398                 c->thread_count = boost::thread::hardware_concurrency();\r
 399                 if(avcodec_open(c, encoder) < 0)\r
 400                 {\r
 401                         c->thread_count = 1;\r
 402                         THROW_ON_ERROR2(avcodec_open(c, encoder), "[ffmpeg_consumer]");\r
 403                 }\r
 404 \r
 405                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 406                 {\r
 407                         LOG_ON_ERROR2(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                         BOOST_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                         BOOST_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           = SAMPLE_FMT_S16;\r
 435 \r
 436                 if(output_format_.vcodec == CODEC_ID_FLV1)              \r
 437                         c->sample_rate  = 44100;                \r
 438 \r
 439                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)\r
 440                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 441                                 \r
 442                 boost::range::remove_erase_if(options, [&](const option& o)\r
 443                 {\r
 444                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;\r
 445                 });\r
 446 \r
 447                 THROW_ON_ERROR2(avcodec_open(c, encoder), "[ffmpeg_consumer]");\r
 448 \r
 449                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 450                 {\r
 451                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");;\r
 452                         av_freep(&st->codec);\r
 453                         av_freep(&st);\r
 454                 });\r
 455         }\r
 456 \r
 457         std::shared_ptr<AVFrame> convert_video(core::read_frame& frame, AVCodecContext* c)\r
 458         {\r
 459                 if(!sws_) \r
 460                 {\r
 461                         sws_.reset(sws_getContext(format_desc_.width, format_desc_.height, PIX_FMT_BGRA, c->width, c->height, c->pix_fmt, SWS_BICUBIC, nullptr, nullptr, nullptr), sws_freeContext);\r
 462                         if (sws_ == nullptr) \r
 463                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Cannot initialize the conversion context"));\r
 464                 }\r
 465 \r
 466                 std::shared_ptr<AVFrame> in_frame(avcodec_alloc_frame(), av_free);\r
 467                 avpicture_fill(reinterpret_cast<AVPicture*>(in_frame.get()), const_cast<uint8_t*>(frame.image_data().begin()), PIX_FMT_BGRA, format_desc_.width, format_desc_.height);\r
 468                                 \r
 469                 std::shared_ptr<AVFrame> out_frame(avcodec_alloc_frame(), av_free);\r
 470                 picture_buf_.resize(avpicture_get_size(c->pix_fmt, c->width, c->height));\r
 471                 avpicture_fill(reinterpret_cast<AVPicture*>(out_frame.get()), picture_buf_.data(), c->pix_fmt, c->width, c->height);\r
 472 \r
 473                 sws_scale(sws_.get(), in_frame->data, in_frame->linesize, 0, format_desc_.height, out_frame->data, out_frame->linesize);\r
 474 \r
 475                 return out_frame;\r
 476         }\r
 477   \r
 478         void encode_video_frame(core::read_frame& frame)\r
 479         { \r
 480                 auto c = video_st_->codec;\r
 481                 \r
 482                 auto in_time  = static_cast<double>(in_frame_number_) / format_desc_.fps;\r
 483                 auto out_time = static_cast<double>(out_frame_number_) / (static_cast<double>(c->time_base.den) / static_cast<double>(c->time_base.num));\r
 484                 \r
 485                 in_frame_number_++;\r
 486 \r
 487                 if(out_time - in_time > 0.01)\r
 488                         return;\r
 489  \r
 490                 auto av_frame = convert_video(frame, c);\r
 491                 av_frame->interlaced_frame      = format_desc_.field_mode != core::field_mode::progressive;\r
 492                 av_frame->top_field_first       = format_desc_.field_mode == core::field_mode::upper;\r
 493                 av_frame->pts                           = out_frame_number_++;\r
 494 \r
 495                 int out_size = THROW_ON_ERROR2(avcodec_encode_video(c, video_outbuf_.data(), video_outbuf_.size(), av_frame.get()), "[ffmpeg_consumer]");\r
 496                 if(out_size == 0)\r
 497                         return;\r
 498                                 \r
 499                 safe_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 500                 {\r
 501                         av_free_packet(p);\r
 502                         delete p;\r
 503                 });\r
 504                 av_init_packet(pkt.get());\r
 505  \r
 506                 if (c->coded_frame->pts != AV_NOPTS_VALUE)\r
 507                         pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, video_st_->time_base);\r
 508 \r
 509                 if(c->coded_frame->key_frame)\r
 510                         pkt->flags |= AV_PKT_FLAG_KEY;\r
 511 \r
 512                 pkt->stream_index       = video_st_->index;\r
 513                 pkt->data                       = video_outbuf_.data();\r
 514                 pkt->size                       = out_size;\r
 515                         \r
 516                 av_interleaved_write_frame(oc_.get(), pkt.get());               \r
 517         }\r
 518                 \r
 519         byte_vector convert_audio(core::read_frame& frame, AVCodecContext* c)\r
 520         {\r
 521                 if(!swr_)               \r
 522                         swr_.reset(new audio_resampler(c->channels, format_desc_.audio_channels, \r
 523                                                                                    c->sample_rate, format_desc_.audio_sample_rate,\r
 524                                                                                    c->sample_fmt, AV_SAMPLE_FMT_S32));\r
 525                 \r
 526 \r
 527                 auto audio_data = frame.audio_data();\r
 528 \r
 529                 std::vector<int8_t,  tbb::cache_aligned_allocator<int8_t>> audio_resample_buffer;\r
 530                 std::copy(reinterpret_cast<const uint8_t*>(audio_data.begin()), \r
 531                                   reinterpret_cast<const uint8_t*>(audio_data.begin()) + audio_data.size()*4, \r
 532                                   std::back_inserter(audio_resample_buffer));\r
 533                 \r
 534                 audio_resample_buffer = swr_->resample(std::move(audio_resample_buffer));\r
 535                 \r
 536                 return byte_vector(audio_resample_buffer.begin(), audio_resample_buffer.end());\r
 537         }\r
 538 \r
 539         void encode_audio_frame(core::read_frame& frame)\r
 540         {                       \r
 541                 auto c = audio_st_->codec;\r
 542 \r
 543                 boost::range::push_back(audio_buf_, convert_audio(frame, c));\r
 544                 \r
 545                 std::size_t frame_size = c->frame_size;\r
 546                 auto input_audio_size = frame_size * av_get_bytes_per_sample(c->sample_fmt) * c->channels;\r
 547                 \r
 548                 while(audio_buf_.size() >= input_audio_size)\r
 549                 {\r
 550                         safe_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 551                         {\r
 552                                 av_free_packet(p);\r
 553                                 delete p;\r
 554                         });\r
 555                         av_init_packet(pkt.get());\r
 556 \r
 557                         if(frame_size > 1)\r
 558                         {                                                               \r
 559                                 pkt->size = avcodec_encode_audio(c, audio_outbuf_.data(), audio_outbuf_.size(), reinterpret_cast<short*>(audio_buf_.data()));\r
 560                                 audio_buf_.erase(audio_buf_.begin(), audio_buf_.begin() + input_audio_size);\r
 561                         }\r
 562                         else\r
 563                         {\r
 564                                 audio_outbuf_ = std::move(audio_buf_);          \r
 565                                 audio_buf_.clear();\r
 566                                 pkt->size = audio_outbuf_.size();\r
 567                                 pkt->data = audio_outbuf_.data();\r
 568                         }\r
 569                 \r
 570                         if(pkt->size == 0)\r
 571                                 return;\r
 572 \r
 573                         if (c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE)\r
 574                                 pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, audio_st_->time_base);\r
 575 \r
 576                         pkt->flags               |= AV_PKT_FLAG_KEY;\r
 577                         pkt->stream_index = audio_st_->index;\r
 578                         pkt->data                 = reinterpret_cast<uint8_t*>(audio_outbuf_.data());\r
 579                 \r
 580                         av_interleaved_write_frame(oc_.get(), pkt.get());\r
 581                 }\r
 582         }\r
 583                  \r
 584         void send(const safe_ptr<core::read_frame>& frame)\r
 585         {\r
 586                 encode_executor_.begin_invoke([=]\r
 587                 {               \r
 588                         boost::timer frame_timer;\r
 589 \r
 590                         encode_video_frame(*frame);\r
 591                         encode_audio_frame(*frame);\r
 592 \r
 593                         graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);                    \r
 594                 });\r
 595         }\r
 596 };\r
 597 \r
 598 struct ffmpeg_consumer_proxy : public core::frame_consumer\r
 599 {\r
 600         const std::wstring                              filename_;\r
 601         const std::vector<option>                       options_;\r
 602 \r
 603         std::unique_ptr<ffmpeg_consumer> consumer_;\r
 604 \r
 605 public:\r
 606 \r
 607         ffmpeg_consumer_proxy(const std::wstring& filename, const std::vector<option>& options)\r
 608                 : filename_(filename)\r
 609                 , options_(options)\r
 610         {\r
 611         }\r
 612         \r
 613         virtual void initialize(const core::video_format_desc& format_desc, int)\r
 614         {\r
 615                 consumer_.reset();\r
 616                 consumer_.reset(new ffmpeg_consumer(narrow(filename_), format_desc, options_));\r
 617         }\r
 618         \r
 619         virtual boost::unique_future<bool> send(const safe_ptr<core::read_frame>& frame) override\r
 620         {\r
 621                 consumer_->send(frame);\r
 622                 return caspar::wrap_as_future(true);\r
 623         }\r
 624         \r
 625         virtual std::wstring print() const override\r
 626         {\r
 627                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";\r
 628         }\r
 629 \r
 630         virtual boost::property_tree::wptree info() const override\r
 631         {\r
 632                 boost::property_tree::wptree info;\r
 633                 info.add(L"type", L"ffmpeg-consumer");\r
 634                 info.add(L"filename", filename_);\r
 635                 return info;\r
 636         }\r
 637                 \r
 638         virtual bool has_synchronization_clock() const override\r
 639         {\r
 640                 return false;\r
 641         }\r
 642 \r
 643         virtual size_t buffer_depth() const override\r
 644         {\r
 645                 return 1;\r
 646         }\r
 647 \r
 648         virtual int index() const override\r
 649         {\r
 650                 return 200;\r
 651         }\r
 652 };      \r
 653 \r
 654 safe_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)\r
 655 {\r
 656         if(params.size() < 1 || params[0] != L"FILE")\r
 657                 return core::frame_consumer::empty();\r
 658         \r
 659         auto filename   = (params.size() > 1 ? params[1] : L"");\r
 660                         \r
 661         std::vector<option> options;\r
 662         \r
 663         if(params.size() >= 3)\r
 664         {\r
 665                 for(auto opt_it = params.begin()+2; opt_it != params.end();)\r
 666                 {\r
 667                         auto name  = narrow(boost::trim_copy(boost::to_lower_copy(*opt_it++))).substr(1);\r
 668                         auto value = narrow(boost::trim_copy(boost::to_lower_copy(*opt_it++)));\r
 669                                 \r
 670                         if(value == "h264")\r
 671                                 value = "libx264";\r
 672                         else if(value == "dvcpro")\r
 673                                 value = "dvvideo";\r
 674 \r
 675                         options.push_back(option(name, value));\r
 676                 }\r
 677         }\r
 678                 \r
 679         return make_safe<ffmpeg_consumer_proxy>(env::media_folder() + filename, options);\r
 680 }\r
 681 \r
 682 safe_ptr<core::frame_consumer> create_consumer(const boost::property_tree::wptree& ptree)\r
 683 {\r
 684         auto filename   = ptree.get<std::wstring>(L"path");\r
 685         auto codec              = ptree.get(L"vcodec", L"libx264");\r
 686 \r
 687         std::vector<option> options;\r
 688         options.push_back(option("vcodec", narrow(codec)));\r
 689         \r
 690         return make_safe<ffmpeg_consumer_proxy>(env::media_folder() + filename, options);\r
 691 }\r
 692 \r
 693 }}\r