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/diagnostics/graph.h>\r
  37 #include <common/env.h>\r
  38 #include <common/utility/string.h>\r
  39 #include <common/utility/param.h>\r
  40 \r
  41 #include <boost/algorithm/string.hpp>\r
  42 #include <boost/timer.hpp>\r
  43 #include <boost/property_tree/ptree.hpp>\r
  44 \r
  45 #include <tbb/cache_aligned_allocator.h>\r
  46 #include <tbb/parallel_invoke.h>\r
  47 \r
  48 #include <boost/range/algorithm.hpp>\r
  49 #include <boost/range/algorithm_ext.hpp>\r
  50 #include <boost/lexical_cast.hpp>\r
  51 \r
  52 #include <string>\r
  53 \r
  54 #if defined(_MSC_VER)\r
  55 #pragma warning (push)\r
  56 #pragma warning (disable : 4244)\r
  57 #endif\r
  58 extern "C" \r
  59 {\r
  60         #define __STDC_CONSTANT_MACROS\r
  61         #define __STDC_LIMIT_MACROS\r
  62         #include <libavformat/avformat.h>\r
  63         #include <libswscale/swscale.h>\r
  64         #include <libavutil/opt.h>\r
  65         #include <libavutil/pixdesc.h>\r
  66         #include <libavutil/parseutils.h>\r
  67 }\r
  68 #if defined(_MSC_VER)\r
  69 #pragma warning (pop)\r
  70 #endif\r
  71 \r
  72 namespace caspar { namespace ffmpeg {\r
  73
  74 int av_opt_set(void *obj, const char *name, const char *val, int search_flags)\r
  75 {\r
  76         AVClass* av_class = *(AVClass**)obj;\r
  77 \r
  78         if((strcmp(name, "pix_fmt") == 0 || strcmp(name, "pixel_format") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)\r
  79         {\r
  80                 AVCodecContext* c = (AVCodecContext*)obj;               \r
  81                 auto pix_fmt = av_get_pix_fmt(val);\r
  82                 if(pix_fmt == PIX_FMT_NONE)\r
  83                         return -1;              \r
  84                 c->pix_fmt = pix_fmt;\r
  85                 return 0;\r
  86         }\r
  87         if((strcmp(name, "r") == 0 || strcmp(name, "frame_rate") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)\r
  88         {\r
  89                 AVCodecContext* c = (AVCodecContext*)obj;       \r
  90 \r
  91                 if(c->codec_type != AVMEDIA_TYPE_VIDEO)\r
  92                         return -1;\r
  93 \r
  94                 AVRational rate;\r
  95                 int ret = av_parse_video_rate(&rate, val);\r
  96                 if(ret < 0)\r
  97                         return ret;\r
  98 \r
  99                 c->time_base.num = rate.den;\r
 100                 c->time_base.den = rate.num;\r
 101                 return 0;\r
 102         }\r
 103 \r
 104         return ::av_opt_set(obj, name, val, search_flags);\r
 105 }\r
 106 \r
 107 struct option\r
 108 {\r
 109         std::string name;\r
 110         std::string value;\r
 111 \r
 112         option(std::string name, std::string value)\r
 113                 : name(std::move(name))\r
 114                 , value(std::move(value))\r
 115         {\r
 116         }\r
 117 };\r
 118         \r
 119 struct output_format\r
 120 {\r
 121         AVOutputFormat* format;\r
 122         int                             width;\r
 123         int                             height;\r
 124         CodecID                 vcodec;\r
 125         CodecID                 acodec;\r
 126 \r
 127         output_format(const core::video_format_desc& format_desc, const std::string& filename, std::vector<option>& options)\r
 128                 : format(av_guess_format(nullptr, filename.c_str(), nullptr))\r
 129                 , width(format_desc.width)\r
 130                 , height(format_desc.height)\r
 131                 , vcodec(CODEC_ID_NONE)\r
 132                 , acodec(CODEC_ID_NONE)\r
 133         {\r
 134                 boost::range::remove_erase_if(options, [&](const option& o)\r
 135                 {\r
 136                         return set_opt(o.name, o.value);\r
 137                 });\r
 138                 \r
 139                 if(vcodec == CODEC_ID_NONE)\r
 140                         vcodec = format->video_codec;\r
 141 \r
 142                 if(acodec == CODEC_ID_NONE)\r
 143                         acodec = format->audio_codec;\r
 144                 \r
 145                 if(vcodec == CODEC_ID_NONE)\r
 146                         vcodec = CODEC_ID_H264;\r
 147                 \r
 148                 if(acodec == CODEC_ID_NONE)\r
 149                         acodec = CODEC_ID_PCM_S16LE;\r
 150         }\r
 151         \r
 152         bool set_opt(const std::string& name, const std::string& value)\r
 153         {\r
 154                 //if(name == "target")\r
 155                 //{ \r
 156                 //      enum { PAL, NTSC, FILM, UNKNOWN } norm = UNKNOWN;\r
 157                 //      \r
 158                 //      if(name.find("pal-") != std::string::npos)\r
 159                 //              norm = PAL;\r
 160                 //      else if(name.find("ntsc-") != std::string::npos)\r
 161                 //              norm = NTSC;\r
 162 \r
 163                 //      if(norm == UNKNOWN)\r
 164                 //              BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("target"));\r
 165                 //
 166                 //      if (name.find("-dv") != std::string::npos)
 167                 //      {
 168                 //              set_opt("f", "dv");
 169                 //              set_opt("s", norm == PAL ? "720x576" : "720x480");
 170                 //              //set_opt("pix_fmt", name.find("-dv50") != std::string::npos ? "yuv422p" : norm == PAL ? "yuv420p" : "yuv411p");
 171                 //              //set_opt("ar", "48000");
 172                 //              //set_opt("ac", "2");
 173                 //      } \r
 174                 //}\r
 175                 if(name == "f")\r
 176                 {\r
 177                         format = av_guess_format(value.c_str(), nullptr, nullptr);\r
 178 \r
 179                         if(format == nullptr)\r
 180                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("f"));\r
 181 \r
 182                         return true;\r
 183                 }\r
 184                 else if(name == "vcodec")\r
 185                 {\r
 186                         auto c = avcodec_find_encoder_by_name(value.c_str());\r
 187                         if(c == nullptr)\r
 188                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("vcodec"));\r
 189 \r
 190                         vcodec = avcodec_find_encoder_by_name(value.c_str())->id;\r
 191                         return true;\r
 192 \r
 193                 }\r
 194                 else if(name == "acodec")\r
 195                 {\r
 196                         auto c = avcodec_find_encoder_by_name(value.c_str());\r
 197                         if(c == nullptr)\r
 198                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("acodec"));\r
 199 \r
 200                         acodec = avcodec_find_encoder_by_name(value.c_str())->id;\r
 201 \r
 202                         return true;\r
 203                 }\r
 204                 else if(name == "s")\r
 205                 {\r
 206                         if(av_parse_video_size(&width, &height, value.c_str()) < 0)\r
 207                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("s"));\r
 208                         \r
 209                         return true;\r
 210                 }\r
 211 \r
 212                 return false;\r
 213         }\r
 214 };\r
 215 \r
 216 typedef std::vector<uint8_t, tbb::cache_aligned_allocator<uint8_t>>     byte_vector;\r
 217 \r
 218 struct ffmpeg_consumer : boost::noncopyable\r
 219 {               \r
 220         const std::string                                               filename_;\r
 221                 \r
 222         const std::shared_ptr<AVFormatContext>  oc_;\r
 223         const core::video_format_desc                   format_desc_;\r
 224         \r
 225         const safe_ptr<diagnostics::graph>              graph_;\r
 226 \r
 227         executor                                                                encode_executor_;\r
 228         executor                                                                write_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                 , write_executor_(print() + L"/output")\r
 254                 , in_frame_number_(0)\r
 255                 , out_frame_number_(0)\r
 256                 , output_format_(format_desc, filename, options)\r
 257         {\r
 258                 // TODO: Ask stakeholders about case where file already exists.\r
 259                 boost::filesystem2::remove(boost::filesystem2::wpath(env::media_folder() + widen(filename))); // Delete the file if it exists\r
 260 \r
 261                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 262                 graph_->set_color("write-time", diagnostics::color(0.5f, 0.5f, 0.1f));\r
 263                 graph_->set_text(print());\r
 264                 diagnostics::register_graph(graph_);\r
 265 \r
 266                 encode_executor_.set_capacity(8);\r
 267                 write_executor_.set_capacity(8);\r
 268 \r
 269                 oc_->oformat = output_format_.format;\r
 270                                 \r
 271                 THROW_ON_ERROR2(av_set_parameters(oc_.get(), nullptr), "[ffmpeg_consumer]");\r
 272 \r
 273                 strcpy_s(oc_->filename, filename_.c_str());\r
 274                 \r
 275                 //  Add the audio and video streams using the default format codecs     and initialize the codecs.\r
 276                 auto options2 = options;\r
 277                 video_st_ = add_video_stream(options2);\r
 278                 audio_st_ = add_audio_stream(options);\r
 279                                 \r
 280                 dump_format(oc_.get(), 0, filename_.c_str(), 1);\r
 281                  \r
 282                 // Open the output ffmpeg, if needed.\r
 283                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 284                         THROW_ON_ERROR2(avio_open(&oc_->pb, filename_.c_str(), URL_WRONLY), "[ffmpeg_consumer]");\r
 285                                 \r
 286                 THROW_ON_ERROR2(av_write_header(oc_.get()), "[ffmpeg_consumer]");\r
 287 \r
 288                 if(options.size() > 0)\r
 289                 {\r
 290                         BOOST_FOREACH(auto& option, options)\r
 291                                 CASPAR_LOG(warning) << L"Invalid option: -" << widen(option.name) << L" " << widen(option.value);\r
 292                 }\r
 293 \r
 294                 CASPAR_LOG(info) << print() << L" Successfully Initialized.";   \r
 295         }\r
 296 \r
 297         ~ffmpeg_consumer()\r
 298         {    \r
 299                 encode_executor_.stop();\r
 300                 encode_executor_.join();\r
 301 \r
 302                 write_executor_.stop();\r
 303                 write_executor_.join();\r
 304                 \r
 305                 LOG_ON_ERROR2(av_write_trailer(oc_.get()), "[ffmpeg_consumer]");\r
 306                 \r
 307                 audio_st_.reset();\r
 308                 video_st_.reset();\r
 309                           \r
 310                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 311                         LOG_ON_ERROR2(avio_close(oc_->pb), "[ffmpeg_consumer]"); // Close the output ffmpeg.\r
 312 \r
 313                 CASPAR_LOG(info) << print() << L" Successfully Uninitialized."; \r
 314         }\r
 315                         \r
 316         std::wstring print() const\r
 317         {\r
 318                 return L"ffmpeg[" + widen(filename_) + L"]";\r
 319         }\r
 320 \r
 321         std::shared_ptr<AVStream> add_video_stream(std::vector<option>& options)\r
 322         { \r
 323                 if(output_format_.vcodec == CODEC_ID_NONE)\r
 324                         return nullptr;\r
 325 \r
 326                 auto st = av_new_stream(oc_.get(), 0);\r
 327                 if (!st)                \r
 328                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate video-stream.") << boost::errinfo_api_function("av_new_stream"));              \r
 329 \r
 330                 auto encoder = avcodec_find_encoder(output_format_.vcodec);\r
 331                 if (!encoder)\r
 332                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Codec not found."));\r
 333 \r
 334                 auto c = st->codec;\r
 335 \r
 336                 avcodec_get_context_defaults3(c, encoder);\r
 337                                 \r
 338                 c->codec_id                     = output_format_.vcodec;\r
 339                 c->codec_type           = AVMEDIA_TYPE_VIDEO;\r
 340                 c->width                        = output_format_.width;\r
 341                 c->height                       = output_format_.height;\r
 342                 c->time_base.den        = format_desc_.time_scale;\r
 343                 c->time_base.num        = format_desc_.duration;\r
 344                 c->gop_size                     = 25;\r
 345                 c->flags                   |= format_desc_.field_mode == core::field_mode::progressive ? 0 : (CODEC_FLAG_INTERLACED_ME | CODEC_FLAG_INTERLACED_DCT);\r
 346                 if(c->pix_fmt == PIX_FMT_NONE)\r
 347                         c->pix_fmt = PIX_FMT_YUV420P;\r
 348 \r
 349                 if(c->codec_id == CODEC_ID_PRORES)\r
 350                 {                       \r
 351                         c->bit_rate     = c->width < 1280 ? 63*1000000 : 220*1000000;\r
 352                         c->pix_fmt      = PIX_FMT_YUV422P10;\r
 353                 }\r
 354                 else if(c->codec_id == CODEC_ID_DNXHD)\r
 355                 {\r
 356                         if(c->width < 1280 || c->height < 720)\r
 357                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Unsupported video dimensions."));\r
 358 \r
 359                         c->bit_rate     = 220*1000000;\r
 360                         c->pix_fmt      = PIX_FMT_YUV422P;\r
 361                 }\r
 362                 else if(c->codec_id == CODEC_ID_DVVIDEO)\r
 363                 {\r
 364                         c->width = c->height == 1280 ? 960  : c->width;\r
 365                         \r
 366                         if(format_desc_.format == core::video_format::ntsc)\r
 367                                 c->pix_fmt = PIX_FMT_YUV411P;\r
 368                         else if(format_desc_.format == core::video_format::pal)\r
 369                                 c->pix_fmt = PIX_FMT_YUV420P;\r
 370                         else // dv50\r
 371                                 c->pix_fmt = PIX_FMT_YUV422P;\r
 372                         \r
 373                         if(format_desc_.duration == 1001)                       \r
 374                                 c->width = c->height == 1080 ? 1280 : c->width;                 \r
 375                         else\r
 376                                 c->width = c->height == 1080 ? 1440 : c->width;                 \r
 377                 }\r
 378                 else if(c->codec_id == CODEC_ID_H264)\r
 379                 {                          \r
 380                         c->pix_fmt = PIX_FMT_YUV420P;    \r
 381                         if(options.empty())\r
 382                         {\r
 383                                 av_opt_set(c->priv_data, "preset", "ultrafast", 0);\r
 384                                 av_opt_set(c->priv_data, "tune",   "fastdecode",   0);\r
 385                                 av_opt_set(c->priv_data, "crf",    "5",     0);\r
 386                         }\r
 387                 }\r
 388                 else if(c->codec_id == CODEC_ID_QTRLE)\r
 389                 {\r
 390                         c->pix_fmt = PIX_FMT_ARGB;\r
 391                 }\r
 392                                 \r
 393                 c->max_b_frames = 0; // b-frames not supported.\r
 394                                 \r
 395                 boost::range::remove_erase_if(options, [&](const option& o)\r
 396                 {\r
 397                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;\r
 398                 });\r
 399                                 \r
 400                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)\r
 401                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 402                 \r
 403                 c->thread_count = boost::thread::hardware_concurrency();\r
 404                 if(avcodec_open(c, encoder) < 0)\r
 405                 {\r
 406                         c->thread_count = 1;\r
 407                         THROW_ON_ERROR2(avcodec_open(c, encoder), "[ffmpeg_consumer]");\r
 408                 }\r
 409 \r
 410                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 411                 {\r
 412                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");\r
 413                         av_freep(&st->codec);\r
 414                         av_freep(&st);\r
 415                 });\r
 416         }\r
 417                 \r
 418         std::shared_ptr<AVStream> add_audio_stream(std::vector<option>& options)\r
 419         {\r
 420                 if(output_format_.acodec == CODEC_ID_NONE)\r
 421                         return nullptr;\r
 422 \r
 423                 auto st = av_new_stream(oc_.get(), 1);\r
 424                 if(!st)\r
 425                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate audio-stream") << boost::errinfo_api_function("av_new_stream"));               \r
 426                 \r
 427                 auto encoder = avcodec_find_encoder(output_format_.acodec);\r
 428                 if (!encoder)\r
 429                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));\r
 430                 \r
 431                 auto c = st->codec;\r
 432 \r
 433                 avcodec_get_context_defaults3(c, encoder);\r
 434 \r
 435                 c->codec_id                     = output_format_.acodec;\r
 436                 c->codec_type           = AVMEDIA_TYPE_AUDIO;\r
 437                 c->sample_rate          = 48000;\r
 438                 c->channels                     = 2;\r
 439                 c->sample_fmt           = SAMPLE_FMT_S16;\r
 440 \r
 441                 if(output_format_.vcodec == CODEC_ID_FLV1)              \r
 442                         c->sample_rate  = 44100;                \r
 443 \r
 444                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)\r
 445                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 446                                 \r
 447                 boost::range::remove_erase_if(options, [&](const option& o)\r
 448                 {\r
 449                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;\r
 450                 });\r
 451 \r
 452                 THROW_ON_ERROR2(avcodec_open(c, encoder), "[ffmpeg_consumer]");\r
 453 \r
 454                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 455                 {\r
 456                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");;\r
 457                         av_freep(&st->codec);\r
 458                         av_freep(&st);\r
 459                 });\r
 460         }\r
 461 \r
 462         std::shared_ptr<AVFrame> convert_video(const safe_ptr<core::read_frame>& frame, AVCodecContext* c)\r
 463         {\r
 464                 if(!sws_) \r
 465                 {\r
 466                         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
 467                         if (sws_ == nullptr) \r
 468                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Cannot initialize the conversion context"));\r
 469                 }\r
 470 \r
 471                 std::shared_ptr<AVFrame> in_frame(avcodec_alloc_frame(), av_free);\r
 472                 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
 473                                 \r
 474                 std::shared_ptr<AVFrame> out_frame(avcodec_alloc_frame(), av_free);\r
 475                 picture_buf_.resize(avpicture_get_size(c->pix_fmt, c->width, c->height));\r
 476                 avpicture_fill(reinterpret_cast<AVPicture*>(out_frame.get()), picture_buf_.data(), c->pix_fmt, c->width, c->height);\r
 477 \r
 478                 sws_scale(sws_.get(), in_frame->data, in_frame->linesize, 0, format_desc_.height, out_frame->data, out_frame->linesize);\r
 479 \r
 480                 return out_frame;\r
 481         }\r
 482   \r
 483         std::shared_ptr<AVPacket> encode_video_frame(const safe_ptr<core::read_frame>& frame)\r
 484         { \r
 485                 auto c = video_st_->codec;\r
 486                 \r
 487                 auto in_time  = static_cast<double>(in_frame_number_) / format_desc_.fps;\r
 488                 auto out_time = static_cast<double>(out_frame_number_) / (static_cast<double>(c->time_base.den) / static_cast<double>(c->time_base.num));\r
 489                 \r
 490                 in_frame_number_++;\r
 491 \r
 492                 if(out_time - in_time > 0.01)\r
 493                         return nullptr;\r
 494  \r
 495                 auto av_frame = convert_video(frame, c);\r
 496                 av_frame->interlaced_frame      = format_desc_.field_mode != core::field_mode::progressive;\r
 497                 av_frame->top_field_first       = format_desc_.field_mode == core::field_mode::upper;\r
 498                 av_frame->pts                           = out_frame_number_++;\r
 499 \r
 500                 int out_size = THROW_ON_ERROR2(avcodec_encode_video(c, video_outbuf_.data(), video_outbuf_.size(), av_frame.get()), "[ffmpeg_consumer]");\r
 501                 if(out_size > 0)\r
 502                 {\r
 503                         safe_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 504                         {\r
 505                                 av_free_packet(p);\r
 506                                 delete p;\r
 507                         });\r
 508                         av_init_packet(pkt.get());\r
 509  \r
 510                         if (c->coded_frame->pts != AV_NOPTS_VALUE)\r
 511                                 pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, video_st_->time_base);\r
 512 \r
 513                         if(c->coded_frame->key_frame)\r
 514                                 pkt->flags |= AV_PKT_FLAG_KEY;\r
 515 \r
 516                         pkt->stream_index       = video_st_->index;\r
 517                         pkt->data                       = video_outbuf_.data();\r
 518                         pkt->size                       = out_size;\r
 519  \r
 520                         av_dup_packet(pkt.get());\r
 521                         return pkt;\r
 522                 }       \r
 523                 return nullptr;\r
 524         }\r
 525                 \r
 526         byte_vector convert_audio(const safe_ptr<core::read_frame>& frame, AVCodecContext* c)\r
 527         {\r
 528                 if(!swr_)               \r
 529                         swr_.reset(new audio_resampler(c->channels, format_desc_.audio_channels, \r
 530                                                                                    c->sample_rate, format_desc_.audio_sample_rate,\r
 531                                                                                    c->sample_fmt, AV_SAMPLE_FMT_S32));\r
 532                 \r
 533 \r
 534                 auto audio_data = frame->audio_data();\r
 535 \r
 536                 std::vector<int8_t,  tbb::cache_aligned_allocator<int8_t>> audio_resample_buffer;\r
 537                 std::copy(reinterpret_cast<const uint8_t*>(audio_data.begin()), \r
 538                                   reinterpret_cast<const uint8_t*>(audio_data.begin()) + audio_data.size()*4, \r
 539                                   std::back_inserter(audio_resample_buffer));\r
 540                 \r
 541                 audio_resample_buffer = swr_->resample(std::move(audio_resample_buffer));\r
 542                 \r
 543                 return byte_vector(audio_resample_buffer.begin(), audio_resample_buffer.end());\r
 544         }\r
 545 \r
 546         std::shared_ptr<AVPacket> encode_audio_frame(const safe_ptr<core::read_frame>& frame)\r
 547         {                       \r
 548                 auto c = audio_st_->codec;\r
 549 \r
 550                 boost::range::push_back(audio_buf_, convert_audio(frame, c));\r
 551
 552                 std::size_t frame_size = c->frame_size;
 553                 \r
 554                 safe_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 555                 {\r
 556                         av_free_packet(p);\r
 557                         delete p;\r
 558                 });\r
 559                 av_init_packet(pkt.get());
 560
 561                 if(frame_size > 1)
 562                 {                       \r
 563                         auto input_audio_size = frame_size * av_get_bytes_per_sample(c->sample_fmt) * c->channels;\r
 564                    \r
 565                         if(audio_buf_.size() < input_audio_size)\r
 566                                 return nullptr;\r
 567
 568                         pkt->size = avcodec_encode_audio(c, audio_outbuf_.data(), audio_outbuf_.size(), reinterpret_cast<short*>(audio_buf_.data()));\r
 569                         audio_buf_.erase(audio_buf_.begin(), audio_buf_.begin() + input_audio_size);
 570                 }
 571                 else
 572                 {
 573                         audio_outbuf_ = std::move(audio_buf_);
 574                         audio_buf_.clear();
 575                         pkt->size = audio_outbuf_.size();
 576                         pkt->data = audio_outbuf_.data();
 577                 }
 578                 \r
 579                 if(pkt->size == 0)\r
 580                         return nullptr;\r
 581 \r
 582                 if (c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE)\r
 583                         pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, audio_st_->time_base);\r
 584 \r
 585                 pkt->flags               |= AV_PKT_FLAG_KEY;\r
 586                 pkt->stream_index = audio_st_->index;\r
 587                 pkt->data                 = reinterpret_cast<uint8_t*>(audio_outbuf_.data());\r
 588                 \r
 589                 av_dup_packet(pkt.get());\r
 590                 return pkt;\r
 591         }\r
 592                  \r
 593         void send(const safe_ptr<core::read_frame>& frame)\r
 594         {\r
 595                 encode_executor_.begin_invoke([=]\r
 596                 {               \r
 597                         boost::timer frame_timer;\r
 598 \r
 599                         auto video = encode_video_frame(frame);\r
 600                         auto audio = encode_audio_frame(frame);\r
 601 \r
 602                         graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);\r
 603                         \r
 604                         write_executor_.begin_invoke([=]\r
 605                         {\r
 606                                 boost::timer write_timer;\r
 607 \r
 608                                 if(video)\r
 609                                         av_write_frame(oc_.get(), video.get());\r
 610                                 if(audio)\r
 611                                         av_write_frame(oc_.get(), audio.get());\r
 612 \r
 613                                 graph_->set_value("write-time", write_timer.elapsed()*format_desc_.fps*0.5);\r
 614                         });\r
 615                 });\r
 616         }\r
 617 };\r
 618 \r
 619 struct ffmpeg_consumer_proxy : public core::frame_consumer\r
 620 {\r
 621         const std::wstring                              filename_;\r
 622         const std::vector<option>                       options_;\r
 623 \r
 624         std::unique_ptr<ffmpeg_consumer> consumer_;\r
 625 \r
 626 public:\r
 627 \r
 628         ffmpeg_consumer_proxy(const std::wstring& filename, const std::vector<option>& options)\r
 629                 : filename_(filename)\r
 630                 , options_(options)\r
 631         {\r
 632         }\r
 633         \r
 634         virtual void initialize(const core::video_format_desc& format_desc, int)\r
 635         {\r
 636                 consumer_.reset();\r
 637                 consumer_.reset(new ffmpeg_consumer(narrow(filename_), format_desc, options_));\r
 638         }\r
 639         \r
 640         virtual bool send(const safe_ptr<core::read_frame>& frame) override\r
 641         {\r
 642                 consumer_->send(frame);\r
 643                 return true;\r
 644         }\r
 645         \r
 646         virtual std::wstring print() const override\r
 647         {\r
 648                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";\r
 649         }\r
 650 \r
 651         virtual boost::property_tree::wptree info() const override\r
 652         {\r
 653                 boost::property_tree::wptree info;\r
 654                 info.add(L"type", L"ffmpeg-consumer");\r
 655                 info.add(L"filename", filename_);\r
 656                 return info;\r
 657         }\r
 658                 \r
 659         virtual bool has_synchronization_clock() const override\r
 660         {\r
 661                 return false;\r
 662         }\r
 663 \r
 664         virtual size_t buffer_depth() const override\r
 665         {\r
 666                 return 1;\r
 667         }\r
 668 \r
 669         virtual int index() const override\r
 670         {\r
 671                 return 200;\r
 672         }\r
 673 };      \r
 674 \r
 675 safe_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)\r
 676 {\r
 677         if(params.size() < 1 || params[0] != L"FILE")\r
 678                 return core::frame_consumer::empty();\r
 679         \r
 680         auto filename   = (params.size() > 1 ? params[1] : L"");\r
 681                         \r
 682         std::vector<option> options;\r
 683         \r
 684         if(params.size() >= 3)\r
 685         {\r
 686                 for(auto opt_it = params.begin()+2; opt_it != params.end();)\r
 687                 {\r
 688                         auto name  = narrow(boost::trim_copy(boost::to_lower_copy(*opt_it++))).substr(1);\r
 689                         auto value = narrow(boost::trim_copy(boost::to_lower_copy(*opt_it++)));\r
 690                                 \r
 691                         if(value == "h264")\r
 692                                 value = "libx264";\r
 693                         else if(value == "dvcpro")\r
 694                                 value = "dvvideo";\r
 695 \r
 696                         options.push_back(option(name, value));\r
 697                 }\r
 698         }\r
 699                 \r
 700         return make_safe<ffmpeg_consumer_proxy>(env::media_folder() + filename, options);\r
 701 }\r
 702 \r
 703 safe_ptr<core::frame_consumer> create_consumer(const boost::property_tree::wptree& ptree)\r
 704 {\r
 705         auto filename   = ptree.get<std::wstring>(L"path");\r
 706         auto codec              = ptree.get(L"vcodec", L"libx264");\r
 707 \r
 708         std::vector<option> options;\r
 709         options.push_back(option("vcodec", narrow(codec)));\r
 710         \r
 711         return make_safe<ffmpeg_consumer_proxy>(env::media_folder() + filename, options);\r
 712 }\r
 713 \r
 714 }}\r