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/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 }\r
  65 #if defined(_MSC_VER)\r
  66 #pragma warning (pop)\r
  67 #endif\r
  68 \r
  69 namespace caspar { namespace ffmpeg {\r
  70         \r
  71 int av_opt_set(void *obj, const char *name, const char *val, int search_flags)\r
  72 {\r
  73         AVClass* av_class = *(AVClass**)obj;\r
  74 \r
  75         if((strcmp(name, "pix_fmt") == 0 || strcmp(name, "pixel_format") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)\r
  76         {\r
  77                 AVCodecContext* c = (AVCodecContext*)obj;               \r
  78                 auto pix_fmt = av_get_pix_fmt(val);\r
  79                 if(pix_fmt == PIX_FMT_NONE)\r
  80                         return -1;              \r
  81                 c->pix_fmt = pix_fmt;\r
  82                 return 0;\r
  83         }\r
  84         if((strcmp(name, "r") == 0 || strcmp(name, "frame_rate") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)\r
  85         {\r
  86                 AVCodecContext* c = (AVCodecContext*)obj;       \r
  87 \r
  88                 if(c->codec_type != AVMEDIA_TYPE_VIDEO)\r
  89                         return -1;\r
  90 \r
  91                 AVRational rate;\r
  92                 int ret = av_parse_video_rate(&rate, val);\r
  93                 if(ret < 0)\r
  94                         return ret;\r
  95 \r
  96                 c->time_base.num = rate.den;\r
  97                 c->time_base.den = rate.num;\r
  98                 return 0;\r
  99         }\r
 100 \r
 101         return ::av_opt_set(obj, name, val, search_flags);\r
 102 }\r
 103 \r
 104 struct option\r
 105 {\r
 106         std::string name;\r
 107         std::string value;\r
 108 \r
 109         option(std::string name, std::string value)\r
 110                 : name(std::move(name))\r
 111                 , value(std::move(value))\r
 112         {\r
 113         }\r
 114 };\r
 115         \r
 116 struct output_format\r
 117 {\r
 118         AVOutputFormat* format;\r
 119         int                             width;\r
 120         int                             height;\r
 121         CodecID                 vcodec;\r
 122         CodecID                 acodec;\r
 123 \r
 124         output_format(const core::video_format_desc& format_desc, const std::string& filename, std::vector<option>& options)\r
 125                 : format(av_guess_format(nullptr, filename.c_str(), nullptr))\r
 126                 , width(format_desc.width)\r
 127                 , height(format_desc.height)\r
 128                 , vcodec(CODEC_ID_NONE)\r
 129                 , acodec(CODEC_ID_NONE)\r
 130         {\r
 131                 boost::range::remove_erase_if(options, [&](const option& o)\r
 132                 {\r
 133                         return set_opt(o.name, o.value);\r
 134                 });\r
 135                 \r
 136                 if(vcodec == CODEC_ID_NONE)\r
 137                         vcodec = format->video_codec;\r
 138 \r
 139                 if(acodec == CODEC_ID_NONE)\r
 140                         acodec = format->audio_codec;\r
 141                 \r
 142                 if(vcodec == CODEC_ID_NONE)\r
 143                         vcodec = CODEC_ID_H264;\r
 144                 \r
 145                 if(acodec == CODEC_ID_NONE)\r
 146                         acodec = CODEC_ID_PCM_S16LE;\r
 147         }\r
 148         \r
 149         bool set_opt(const std::string& name, const std::string& value)\r
 150         {\r
 151                 //if(name == "target")\r
 152                 //{ \r
 153                 //      enum { PAL, NTSC, FILM, UNKNOWN } norm = UNKNOWN;\r
 154                 //      \r
 155                 //      if(name.find("pal-") != std::string::npos)\r
 156                 //              norm = PAL;\r
 157                 //      else if(name.find("ntsc-") != std::string::npos)\r
 158                 //              norm = NTSC;\r
 159 \r
 160                 //      if(norm == UNKNOWN)\r
 161                 //              BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("target"));\r
 162                 //      \r
 163                 //      if (name.find("-dv") != std::string::npos) \r
 164                 //      {\r
 165                 //              set_opt("f", "dv");\r
 166                 //              set_opt("s", norm == PAL ? "720x576" : "720x480");\r
 167                 //              //set_opt("pix_fmt", name.find("-dv50") != std::string::npos ? "yuv422p" : norm == PAL ? "yuv420p" : "yuv411p");\r
 168                 //              //set_opt("ar", "48000");\r
 169                 //              //set_opt("ac", "2");\r
 170                 //      } \r
 171                 //}\r
 172                 if(name == "f")\r
 173                 {\r
 174                         format = av_guess_format(value.c_str(), nullptr, nullptr);\r
 175 \r
 176                         if(format == nullptr)\r
 177                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("f"));\r
 178 \r
 179                         return true;\r
 180                 }\r
 181                 else if(name == "vcodec")\r
 182                 {\r
 183                         auto c = avcodec_find_encoder_by_name(value.c_str());\r
 184                         if(c == nullptr)\r
 185                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("vcodec"));\r
 186 \r
 187                         vcodec = avcodec_find_encoder_by_name(value.c_str())->id;\r
 188                         return true;\r
 189 \r
 190                 }\r
 191                 else if(name == "acodec")\r
 192                 {\r
 193                         auto c = avcodec_find_encoder_by_name(value.c_str());\r
 194                         if(c == nullptr)\r
 195                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("acodec"));\r
 196 \r
 197                         acodec = avcodec_find_encoder_by_name(value.c_str())->id;\r
 198 \r
 199                         return true;\r
 200                 }\r
 201                 else if(name == "s")\r
 202                 {\r
 203                         if(av_parse_video_size(&width, &height, value.c_str()) < 0)\r
 204                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("s"));\r
 205                         \r
 206                         return true;\r
 207                 }\r
 208 \r
 209                 return false;\r
 210         }\r
 211 };\r
 212 \r
 213 typedef std::vector<uint8_t, tbb::cache_aligned_allocator<uint8_t>>     byte_vector;\r
 214 \r
 215 struct ffmpeg_consumer : boost::noncopyable\r
 216 {               \r
 217         const std::string                                               filename_;\r
 218                 \r
 219         const std::shared_ptr<AVFormatContext>  oc_;\r
 220         const core::video_format_desc                   format_desc_;\r
 221         \r
 222         const spl::shared_ptr<diagnostics::graph>               graph_;\r
 223 \r
 224         executor                                                                encode_executor_;\r
 225         executor                                                                write_executor_;\r
 226         \r
 227         std::shared_ptr<AVStream>                               audio_st_;\r
 228         std::shared_ptr<AVStream>                               video_st_;\r
 229         \r
 230         byte_vector                                                             audio_outbuf_;\r
 231         byte_vector                                                             audio_buf_;\r
 232         byte_vector                                                             video_outbuf_;\r
 233         byte_vector                                                             picture_buf_;\r
 234         std::shared_ptr<audio_resampler>                swr_;\r
 235         std::shared_ptr<SwsContext>                             sws_;\r
 236 \r
 237         int64_t                                                                 in_frame_number_;\r
 238         int64_t                                                                 out_frame_number_;\r
 239 \r
 240         output_format                                                   output_format_;\r
 241         \r
 242 public:\r
 243         ffmpeg_consumer(const std::string& filename, const core::video_format_desc& format_desc, std::vector<option> options)\r
 244                 : filename_(filename)\r
 245                 , video_outbuf_(1920*1080*8)\r
 246                 , audio_outbuf_(10000)\r
 247                 , oc_(avformat_alloc_context(), av_free)\r
 248                 , format_desc_(format_desc)\r
 249                 , encode_executor_(print())\r
 250                 , write_executor_(print() + L"/output")\r
 251                 , in_frame_number_(0)\r
 252                 , out_frame_number_(0)\r
 253                 , output_format_(format_desc, filename, options)\r
 254         {\r
 255                 // TODO: Ask stakeholders about case where file already exists.\r
 256                 boost::filesystem::remove(boost::filesystem::path(env::media_folder() + u16(filename))); // Delete the file if it exists\r
 257 \r
 258                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 259                 graph_->set_text(print());\r
 260                 diagnostics::register_graph(graph_);\r
 261 \r
 262                 encode_executor_.set_capacity(8);\r
 263                 write_executor_.set_capacity(8);\r
 264 \r
 265                 oc_->oformat = output_format_.format;\r
 266                                 \r
 267                 THROW_ON_ERROR2(av_set_parameters(oc_.get(), nullptr), "[ffmpeg_consumer]");\r
 268 \r
 269                 strcpy_s(oc_->filename, filename_.c_str());\r
 270                 \r
 271                 //  Add the audio and video streams using the default format codecs     and initialize the codecs.\r
 272                 auto options2 = options;\r
 273                 video_st_ = add_video_stream(options2);\r
 274                 audio_st_ = add_audio_stream(options);\r
 275                                 \r
 276                 dump_format(oc_.get(), 0, filename_.c_str(), 1);\r
 277                  \r
 278                 // Open the output ffmpeg, if needed.\r
 279                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 280                         THROW_ON_ERROR2(avio_open(&oc_->pb, filename_.c_str(), URL_WRONLY), "[ffmpeg_consumer]");\r
 281                                 \r
 282                 THROW_ON_ERROR2(av_write_header(oc_.get()), "[ffmpeg_consumer]");\r
 283 \r
 284                 if(options.size() > 0)\r
 285                 {\r
 286                         BOOST_FOREACH(auto& option, options)\r
 287                                 CASPAR_LOG(warning) << L"Invalid option: -" << u16(option.name) << L" " << u16(option.value);\r
 288                 }\r
 289 \r
 290                 CASPAR_LOG(info) << print() << L" Successfully Initialized.";   \r
 291         }\r
 292 \r
 293         ~ffmpeg_consumer()\r
 294         {    \r
 295                 encode_executor_.wait();\r
 296                 write_executor_.wait();\r
 297                 \r
 298                 LOG_ON_ERROR2(av_write_trailer(oc_.get()), "[ffmpeg_consumer]");\r
 299                 \r
 300                 audio_st_.reset();\r
 301                 video_st_.reset();\r
 302                           \r
 303                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 304                         LOG_ON_ERROR2(avio_close(oc_->pb), "[ffmpeg_consumer]"); // Close the output ffmpeg.\r
 305 \r
 306                 CASPAR_LOG(info) << print() << L" Successfully Uninitialized."; \r
 307         }\r
 308                         \r
 309         std::wstring print() const\r
 310         {\r
 311                 return L"ffmpeg[" + u16(filename_) + L"]";\r
 312         }\r
 313 \r
 314         std::shared_ptr<AVStream> add_video_stream(std::vector<option>& options)\r
 315         { \r
 316                 if(output_format_.vcodec == CODEC_ID_NONE)\r
 317                         return nullptr;\r
 318 \r
 319                 auto st = av_new_stream(oc_.get(), 0);\r
 320                 if (!st)                \r
 321                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate video-stream.") << boost::errinfo_api_function("av_new_stream"));              \r
 322 \r
 323                 auto encoder = avcodec_find_encoder(output_format_.vcodec);\r
 324                 if (!encoder)\r
 325                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Codec not found."));\r
 326 \r
 327                 auto c = st->codec;\r
 328 \r
 329                 avcodec_get_context_defaults3(c, encoder);\r
 330                                 \r
 331                 c->codec_id                     = output_format_.vcodec;\r
 332                 c->codec_type           = AVMEDIA_TYPE_VIDEO;\r
 333                 c->width                        = output_format_.width;\r
 334                 c->height                       = output_format_.height;\r
 335                 c->time_base.den        = format_desc_.time_scale;\r
 336                 c->time_base.num        = format_desc_.duration;\r
 337                 c->gop_size                     = 25;\r
 338                 c->flags                   |= format_desc_.field_mode == core::field_mode::progressive ? 0 : (CODEC_FLAG_INTERLACED_ME | CODEC_FLAG_INTERLACED_DCT);\r
 339                 if(c->pix_fmt == PIX_FMT_NONE)\r
 340                         c->pix_fmt = PIX_FMT_YUV420P;\r
 341 \r
 342                 if(c->codec_id == CODEC_ID_PRORES)\r
 343                 {                       \r
 344                         c->bit_rate     = c->width < 1280 ? 63*1000000 : 220*1000000;\r
 345                         c->pix_fmt      = PIX_FMT_YUV422P10;\r
 346                 }\r
 347                 else if(c->codec_id == CODEC_ID_DNXHD)\r
 348                 {\r
 349                         if(c->width < 1280 || c->height < 720)\r
 350                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Unsupported video dimensions."));\r
 351 \r
 352                         c->bit_rate     = 220*1000000;\r
 353                         c->pix_fmt      = PIX_FMT_YUV422P;\r
 354                 }\r
 355                 else if(c->codec_id == CODEC_ID_DVVIDEO)\r
 356                 {\r
 357                         c->width = c->height == 1280 ? 960  : c->width;\r
 358                         \r
 359                         if(format_desc_.format == core::video_format::ntsc)\r
 360                                 c->pix_fmt = PIX_FMT_YUV411P;\r
 361                         else if(format_desc_.format == core::video_format::pal)\r
 362                                 c->pix_fmt = PIX_FMT_YUV420P;\r
 363                         else // dv50\r
 364                                 c->pix_fmt = PIX_FMT_YUV422P;\r
 365                         \r
 366                         if(format_desc_.duration == 1001)                       \r
 367                                 c->width = c->height == 1080 ? 1280 : c->width;                 \r
 368                         else\r
 369                                 c->width = c->height == 1080 ? 1440 : c->width;                 \r
 370                 }\r
 371                 else if(c->codec_id == CODEC_ID_H264)\r
 372                 {                          \r
 373                         c->pix_fmt = PIX_FMT_YUV420P;    \r
 374                         if(options.empty())\r
 375                         {\r
 376                                 av_opt_set(c->priv_data, "preset", "ultrafast", 0);\r
 377                                 av_opt_set(c->priv_data, "tune",   "fastdecode",   0);\r
 378                                 av_opt_set(c->priv_data, "crf",    "5",     0);\r
 379                         }\r
 380                 }\r
 381                 else if(c->codec_id == CODEC_ID_QTRLE)\r
 382                 {\r
 383                         c->pix_fmt = PIX_FMT_ARGB;\r
 384                 }\r
 385                                 \r
 386                 c->max_b_frames = 0; // b-frames not supported.\r
 387                                 \r
 388                 boost::range::remove_erase_if(options, [&](const option& o)\r
 389                 {\r
 390                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;\r
 391                 });\r
 392                                 \r
 393                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)\r
 394                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 395                 \r
 396                 c->thread_count = boost::thread::hardware_concurrency();\r
 397                 if(avcodec_open(c, encoder) < 0)\r
 398                 {\r
 399                         c->thread_count = 1;\r
 400                         THROW_ON_ERROR2(avcodec_open(c, encoder), "[ffmpeg_consumer]");\r
 401                 }\r
 402 \r
 403                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 404                 {\r
 405                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");\r
 406                         av_freep(&st->codec);\r
 407                         av_freep(&st);\r
 408                 });\r
 409         }\r
 410                 \r
 411         std::shared_ptr<AVStream> add_audio_stream(std::vector<option>& options)\r
 412         {\r
 413                 if(output_format_.acodec == CODEC_ID_NONE)\r
 414                         return nullptr;\r
 415 \r
 416                 auto st = av_new_stream(oc_.get(), 1);\r
 417                 if(!st)\r
 418                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate audio-stream") << boost::errinfo_api_function("av_new_stream"));               \r
 419                 \r
 420                 auto encoder = avcodec_find_encoder(output_format_.acodec);\r
 421                 if (!encoder)\r
 422                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));\r
 423                 \r
 424                 auto c = st->codec;\r
 425 \r
 426                 avcodec_get_context_defaults3(c, encoder);\r
 427 \r
 428                 c->codec_id                     = output_format_.acodec;\r
 429                 c->codec_type           = AVMEDIA_TYPE_AUDIO;\r
 430                 c->sample_rate          = 48000;\r
 431                 c->channels                     = 2;\r
 432                 c->sample_fmt           = SAMPLE_FMT_S16;\r
 433 \r
 434                 if(output_format_.vcodec == CODEC_ID_FLV1)              \r
 435                         c->sample_rate  = 44100;                \r
 436 \r
 437                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)\r
 438                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 439                                 \r
 440                 boost::range::remove_erase_if(options, [&](const option& o)\r
 441                 {\r
 442                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;\r
 443                 });\r
 444 \r
 445                 THROW_ON_ERROR2(avcodec_open(c, encoder), "[ffmpeg_consumer]");\r
 446 \r
 447                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 448                 {\r
 449                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");;\r
 450                         av_freep(&st->codec);\r
 451                         av_freep(&st);\r
 452                 });\r
 453         }\r
 454         \r
 455         std::shared_ptr<AVFrame> convert_video(core::const_frame frame, AVCodecContext* c)\r
 456         {\r
 457                 if(!sws_) \r
 458                 {\r
 459                         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
 460                         if (sws_ == nullptr) \r
 461                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Cannot initialize the conversion context"));\r
 462                 }\r
 463 \r
 464                 std::shared_ptr<AVFrame> in_frame(avcodec_alloc_frame(), av_free);\r
 465                 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
 466                                 \r
 467                 std::shared_ptr<AVFrame> out_frame(avcodec_alloc_frame(), av_free);\r
 468                 picture_buf_.resize(avpicture_get_size(c->pix_fmt, c->width, c->height));\r
 469                 avpicture_fill(reinterpret_cast<AVPicture*>(out_frame.get()), picture_buf_.data(), c->pix_fmt, c->width, c->height);\r
 470 \r
 471                 sws_scale(sws_.get(), in_frame->data, in_frame->linesize, 0, format_desc_.height, out_frame->data, out_frame->linesize);\r
 472 \r
 473                 return out_frame;\r
 474         }\r
 475   \r
 476         std::shared_ptr<AVPacket> encode_video_frame(core::const_frame frame)\r
 477         { \r
 478                 auto c = video_st_->codec;\r
 479                 \r
 480                 auto in_time  = static_cast<double>(in_frame_number_) / format_desc_.fps;\r
 481                 auto out_time = static_cast<double>(out_frame_number_) / (static_cast<double>(c->time_base.den) / static_cast<double>(c->time_base.num));\r
 482                 \r
 483                 in_frame_number_++;\r
 484 \r
 485                 if(out_time - in_time > 0.01)\r
 486                         return nullptr;\r
 487  \r
 488                 auto av_frame = convert_video(frame, c);\r
 489                 av_frame->interlaced_frame      = format_desc_.field_mode != core::field_mode::progressive;\r
 490                 av_frame->top_field_first       = format_desc_.field_mode == core::field_mode::upper;\r
 491                 av_frame->pts                           = out_frame_number_++;\r
 492 \r
 493                 int out_size = THROW_ON_ERROR2(avcodec_encode_video(c, video_outbuf_.data(), static_cast<int>(video_outbuf_.size()), av_frame.get()), "[ffmpeg_consumer]");\r
 494                 if(out_size > 0)\r
 495                 {\r
 496                         spl::shared_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 497                         {\r
 498                                 av_free_packet(p);\r
 499                                 delete p;\r
 500                         });\r
 501                         av_init_packet(pkt.get());\r
 502  \r
 503                         if (c->coded_frame->pts != AV_NOPTS_VALUE)\r
 504                                 pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, video_st_->time_base);\r
 505 \r
 506                         if(c->coded_frame->key_frame)\r
 507                                 pkt->flags |= AV_PKT_FLAG_KEY;\r
 508 \r
 509                         pkt->stream_index       = video_st_->index;\r
 510                         pkt->data                       = video_outbuf_.data();\r
 511                         pkt->size                       = out_size;\r
 512  \r
 513                         av_dup_packet(pkt.get());\r
 514                         return pkt;\r
 515                 }       \r
 516                 return nullptr;\r
 517         }\r
 518                 \r
 519         byte_vector convert_audio(core::const_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.data()), \r
 531                                   reinterpret_cast<const uint8_t*>(audio_data.data()) + 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         std::shared_ptr<AVPacket> encode_audio_frame(core::const_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                 \r
 547                 spl::shared_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 548                 {\r
 549                         av_free_packet(p);\r
 550                         delete p;\r
 551                 });\r
 552                 av_init_packet(pkt.get());\r
 553 \r
 554                 if(frame_size > 1)\r
 555                 {                       \r
 556                         auto input_audio_size = frame_size * av_get_bytes_per_sample(c->sample_fmt) * c->channels;\r
 557                    \r
 558                         if(audio_buf_.size() < input_audio_size)\r
 559                                 return nullptr;\r
 560                                         \r
 561                         pkt->size = avcodec_encode_audio(c, audio_outbuf_.data(), static_cast<int>(audio_outbuf_.size()), reinterpret_cast<short*>(audio_buf_.data()));\r
 562                         audio_buf_.erase(audio_buf_.begin(), audio_buf_.begin() + input_audio_size);\r
 563                 }\r
 564                 else\r
 565                 {\r
 566                         audio_outbuf_ = std::move(audio_buf_);          \r
 567                         audio_buf_.clear();\r
 568                         pkt->size = static_cast<int>(audio_outbuf_.size());\r
 569                         pkt->data = audio_outbuf_.data();\r
 570                 }\r
 571                 \r
 572                 if(pkt->size == 0)\r
 573                         return nullptr;\r
 574 \r
 575                 if (c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE)\r
 576                         pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, audio_st_->time_base);\r
 577 \r
 578                 pkt->flags               |= AV_PKT_FLAG_KEY;\r
 579                 pkt->stream_index = audio_st_->index;\r
 580                 pkt->data                 = reinterpret_cast<uint8_t*>(audio_outbuf_.data());\r
 581                 \r
 582                 av_dup_packet(pkt.get());\r
 583                 return pkt;\r
 584         }\r
 585                  \r
 586         void send(core::const_frame& frame)\r
 587         {\r
 588                 encode_executor_.begin_invoke([=]\r
 589                 {               \r
 590                         boost::timer frame_timer;\r
 591 \r
 592                         auto video = encode_video_frame(frame);\r
 593                         auto audio = encode_audio_frame(frame);\r
 594 \r
 595                         graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);\r
 596                         \r
 597                         write_executor_.begin_invoke([=]\r
 598                         {\r
 599                                 if(video)\r
 600                                         av_interleaved_write_frame(oc_.get(), video.get());\r
 601                                 if(audio)\r
 602                                         av_interleaved_write_frame(oc_.get(), audio.get());\r
 603                         });\r
 604                 });\r
 605         }\r
 606 };\r
 607 \r
 608 struct ffmpeg_consumer_proxy : public core::frame_consumer\r
 609 {\r
 610         const std::wstring                              filename_;\r
 611         const std::vector<option>               options_;\r
 612 \r
 613         std::unique_ptr<ffmpeg_consumer> consumer_;\r
 614 \r
 615 public:\r
 616 \r
 617         ffmpeg_consumer_proxy(const std::wstring& filename, const std::vector<option>& options)\r
 618                 : filename_(filename)\r
 619                 , options_(options)\r
 620         {\r
 621         }\r
 622         \r
 623         virtual void initialize(const core::video_format_desc& format_desc, int)\r
 624         {\r
 625                 consumer_.reset();\r
 626                 consumer_.reset(new ffmpeg_consumer(u8(filename_), format_desc, options_));\r
 627         }\r
 628         \r
 629         virtual bool send(core::const_frame frame) override\r
 630         {\r
 631                 consumer_->send(frame);\r
 632                 return true;\r
 633         }\r
 634         \r
 635         virtual std::wstring print() const override\r
 636         {\r
 637                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";\r
 638         }\r
 639 \r
 640         virtual std::wstring name() const override\r
 641         {\r
 642                 return L"file";\r
 643         }\r
 644 \r
 645         virtual boost::property_tree::wptree info() const override\r
 646         {\r
 647                 boost::property_tree::wptree info;\r
 648                 info.add(L"type", L"file");\r
 649                 info.add(L"filename", filename_);\r
 650                 return info;\r
 651         }\r
 652                 \r
 653         virtual bool has_synchronization_clock() const override\r
 654         {\r
 655                 return false;\r
 656         }\r
 657 \r
 658         virtual int buffer_depth() const override\r
 659         {\r
 660                 return 1;\r
 661         }\r
 662 \r
 663         virtual int index() const override\r
 664         {\r
 665                 return 200;\r
 666         }\r
 667 };      \r
 668 spl::shared_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)\r
 669 {\r
 670         if(params.size() < 1 || params[0] != L"FILE")\r
 671                 return core::frame_consumer::empty();\r
 672         \r
 673         auto filename   = (params.size() > 1 ? params[1] : L"");\r
 674                         \r
 675         std::vector<option> options;\r
 676         \r
 677         if(params.size() >= 3)\r
 678         {\r
 679                 for(auto opt_it = params.begin()+2; opt_it != params.end();)\r
 680                 {\r
 681                         auto name  = u8(boost::trim_copy(boost::to_lower_copy(*opt_it++))).substr(1);\r
 682                         auto value = u8(boost::trim_copy(boost::to_lower_copy(*opt_it++)));\r
 683                                 \r
 684                         if(value == "h264")\r
 685                                 value = "libx264";\r
 686                         else if(value == "dvcpro")\r
 687                                 value = "dvvideo";\r
 688 \r
 689                         options.push_back(option(name, value));\r
 690                 }\r
 691         }\r
 692                 \r
 693         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + filename, options);\r
 694 }\r
 695 \r
 696 spl::shared_ptr<core::frame_consumer> create_consumer(const boost::property_tree::wptree& ptree)\r
 697 {\r
 698         auto filename   = ptree.get<std::wstring>(L"path");\r
 699         auto codec              = ptree.get(L"vcodec", L"libx264");\r
 700 \r
 701         std::vector<option> options;\r
 702         options.push_back(option("vcodec", u8(codec)));\r
 703         \r
 704         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + filename, options);\r
 705 }\r
 706 \r
 707 }}\r