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         #include <libavutil/samplefmt.h>\r
  65 }\r
  66 #if defined(_MSC_VER)\r
  67 #pragma warning (pop)\r
  68 #endif\r
  69 \r
  70 namespace caspar { namespace ffmpeg {\r
  71         \r
  72 int av_opt_set(void *obj, const char *name, const char *val, int search_flags)\r
  73 {\r
  74         AVClass* av_class = *(AVClass**)obj;\r
  75 \r
  76         if((strcmp(name, "pix_fmt") == 0 || strcmp(name, "pixel_format") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)\r
  77         {\r
  78                 AVCodecContext* c = (AVCodecContext*)obj;               \r
  79                 auto pix_fmt = av_get_pix_fmt(val);\r
  80                 if(pix_fmt == PIX_FMT_NONE)\r
  81                         return -1;              \r
  82                 c->pix_fmt = pix_fmt;\r
  83                 return 0;\r
  84         }\r
  85         if((strcmp(name, "r") == 0 || strcmp(name, "frame_rate") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)\r
  86         {\r
  87                 AVCodecContext* c = (AVCodecContext*)obj;       \r
  88 \r
  89                 if(c->codec_type != AVMEDIA_TYPE_VIDEO)\r
  90                         return -1;\r
  91 \r
  92                 AVRational rate;\r
  93                 int ret = av_parse_video_rate(&rate, val);\r
  94                 if(ret < 0)\r
  95                         return ret;\r
  96 \r
  97                 c->time_base.num = rate.den;\r
  98                 c->time_base.den = rate.num;\r
  99                 return 0;\r
 100         }\r
 101 \r
 102         return ::av_opt_set(obj, name, val, search_flags);\r
 103 }\r
 104 \r
 105 struct option\r
 106 {\r
 107         std::string name;\r
 108         std::string value;\r
 109 \r
 110         option(std::string name, std::string value)\r
 111                 : name(std::move(name))\r
 112                 , value(std::move(value))\r
 113         {\r
 114         }\r
 115 };\r
 116         \r
 117 struct output_format\r
 118 {\r
 119         AVOutputFormat* format;\r
 120         int                             width;\r
 121         int                             height;\r
 122         CodecID                 vcodec;\r
 123         CodecID                 acodec;\r
 124         int                             croptop;\r
 125         int                             cropbot;\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                 , croptop(0)\r
 134                 , cropbot(0)\r
 135         {\r
 136                 boost::range::remove_erase_if(options, [&](const option& o)\r
 137                 {\r
 138                         return set_opt(o.name, o.value);\r
 139                 });\r
 140                 \r
 141                 if(vcodec == CODEC_ID_NONE)\r
 142                         vcodec = format->video_codec;\r
 143 \r
 144                 if(acodec == CODEC_ID_NONE)\r
 145                         acodec = format->audio_codec;\r
 146                 \r
 147                 if(vcodec == CODEC_ID_NONE)\r
 148                         vcodec = CODEC_ID_H264;\r
 149                 \r
 150                 if(acodec == CODEC_ID_NONE)\r
 151                         acodec = CODEC_ID_PCM_S16LE;\r
 152         }\r
 153         \r
 154         bool set_opt(const std::string& name, const std::string& value)\r
 155         {\r
 156                 //if(name == "target")\r
 157                 //{ \r
 158                 //      enum { PAL, NTSC, FILM, UNKNOWN } norm = UNKNOWN;\r
 159                 //      \r
 160                 //      if(name.find("pal-") != std::string::npos)\r
 161                 //              norm = PAL;\r
 162                 //      else if(name.find("ntsc-") != std::string::npos)\r
 163                 //              norm = NTSC;\r
 164 \r
 165                 //      if(norm == UNKNOWN)\r
 166                 //              BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("target"));\r
 167                 //      \r
 168                 //      if (name.find("-dv") != std::string::npos) \r
 169                 //      {\r
 170                 //              set_opt("f", "dv");\r
 171                 //              set_opt("s", norm == PAL ? "720x576" : "720x480");\r
 172                 //              //set_opt("pix_fmt", name.find("-dv50") != std::string::npos ? "yuv422p" : norm == PAL ? "yuv420p" : "yuv411p");\r
 173                 //              //set_opt("ar", "48000");\r
 174                 //              //set_opt("ac", "2");\r
 175                 //      } \r
 176                 //}\r
 177                 if(name == "f")\r
 178                 {\r
 179                         format = av_guess_format(value.c_str(), nullptr, nullptr);\r
 180 \r
 181                         if(format == nullptr)\r
 182                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("f"));\r
 183 \r
 184                         return true;\r
 185                 }\r
 186                 else if(name == "vcodec")\r
 187                 {\r
 188                         auto c = avcodec_find_encoder_by_name(value.c_str());\r
 189                         if(c == nullptr)\r
 190                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("vcodec"));\r
 191 \r
 192                         vcodec = avcodec_find_encoder_by_name(value.c_str())->id;\r
 193                         return true;\r
 194 \r
 195                 }\r
 196                 else if(name == "acodec")\r
 197                 {\r
 198                         auto c = avcodec_find_encoder_by_name(value.c_str());\r
 199                         if(c == nullptr)\r
 200                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("acodec"));\r
 201 \r
 202                         acodec = avcodec_find_encoder_by_name(value.c_str())->id;\r
 203 \r
 204                         return true;\r
 205                 }\r
 206                 else if(name == "s")\r
 207                 {\r
 208                         if(av_parse_video_size(&width, &height, value.c_str()) < 0)\r
 209                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("s"));\r
 210                         \r
 211                         return true;\r
 212                 }\r
 213                 else if(name == "croptop")\r
 214                 {\r
 215                         croptop = boost::lexical_cast<int>(value);\r
 216 \r
 217                         return true;\r
 218                 }\r
 219                 else if(name == "cropbot")\r
 220                 {\r
 221                         cropbot = boost::lexical_cast<int>(value);\r
 222 \r
 223                         return true;\r
 224                 }\r
 225                 \r
 226                 return false;\r
 227         }\r
 228 };\r
 229 \r
 230 typedef std::vector<uint8_t, tbb::cache_aligned_allocator<uint8_t>>     byte_vector;\r
 231 \r
 232 struct ffmpeg_consumer : boost::noncopyable\r
 233 {               \r
 234         const std::string                                               filename_;\r
 235                 \r
 236         const std::shared_ptr<AVFormatContext>  oc_;\r
 237         const core::video_format_desc                   format_desc_;\r
 238         \r
 239         const spl::shared_ptr<diagnostics::graph>               graph_;\r
 240 \r
 241         executor                                                                encode_executor_;\r
 242         executor                                                                write_executor_;\r
 243         \r
 244         std::shared_ptr<AVStream>                               audio_st_;\r
 245         std::shared_ptr<AVStream>                               video_st_;\r
 246         \r
 247         byte_vector                                                             audio_outbuf_;\r
 248         byte_vector                                                             audio_buf_;\r
 249         byte_vector                                                             video_outbuf_;\r
 250         byte_vector                                                             picture_buf_;\r
 251         std::shared_ptr<audio_resampler>                swr_;\r
 252         std::shared_ptr<SwsContext>                             sws_;\r
 253 \r
 254         int64_t                                                                 in_frame_number_;\r
 255         int64_t                                                                 out_frame_number_;\r
 256 \r
 257         output_format                                                   output_format_;\r
 258         \r
 259 public:\r
 260         ffmpeg_consumer(const std::string& filename, const core::video_format_desc& format_desc, std::vector<option> options)\r
 261                 : filename_(filename)\r
 262                 , video_outbuf_(1920*1080*8)\r
 263                 , audio_outbuf_(10000)\r
 264                 , oc_(avformat_alloc_context(), av_free)\r
 265                 , format_desc_(format_desc)\r
 266                 , encode_executor_(print())\r
 267                 , write_executor_(print() + L"/output")\r
 268                 , in_frame_number_(0)\r
 269                 , out_frame_number_(0)\r
 270                 , output_format_(format_desc, filename, options)\r
 271         {\r
 272                 // TODO: Ask stakeholders about case where file already exists.\r
 273                 boost::filesystem::remove(boost::filesystem::path(env::media_folder() + u16(filename))); // Delete the file if it exists\r
 274 \r
 275                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 276                 graph_->set_text(print());\r
 277                 diagnostics::register_graph(graph_);\r
 278 \r
 279                 encode_executor_.set_capacity(8);\r
 280                 write_executor_.set_capacity(8);\r
 281 \r
 282                 oc_->oformat = output_format_.format;\r
 283                                 \r
 284                 strcpy_s(oc_->filename, filename_.c_str());\r
 285                 \r
 286                 //  Add the audio and video streams using the default format codecs     and initialize the codecs.\r
 287                 video_st_ = add_video_stream(options);\r
 288                 audio_st_ = add_audio_stream(options);\r
 289                                 \r
 290                 av_dump_format(oc_.get(), 0, filename_.c_str(), 1);\r
 291                  \r
 292                 // Open the output ffmpeg, if needed.\r
 293                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 294                         THROW_ON_ERROR2(avio_open(&oc_->pb, filename.c_str(), AVIO_FLAG_WRITE), "[ffmpeg_consumer]");\r
 295                                 \r
 296                 THROW_ON_ERROR2(avformat_write_header(oc_.get(), nullptr), "[ffmpeg_consumer]");\r
 297 \r
 298                 if(options.size() > 0)\r
 299                 {\r
 300                         BOOST_FOREACH(auto& option, options)\r
 301                                 CASPAR_LOG(warning) << L"Invalid option: -" << u16(option.name) << L" " << u16(option.value);\r
 302                 }\r
 303 \r
 304                 CASPAR_LOG(info) << print() << L" Successfully Initialized.";   \r
 305         }\r
 306 \r
 307         ~ffmpeg_consumer()\r
 308         {    \r
 309                 encode_executor_.wait();\r
 310                 write_executor_.wait();\r
 311                 \r
 312                 LOG_ON_ERROR2(av_write_trailer(oc_.get()), "[ffmpeg_consumer]");\r
 313                 \r
 314                 audio_st_.reset();\r
 315                 video_st_.reset();\r
 316                           \r
 317                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 318                         LOG_ON_ERROR2(avio_close(oc_->pb), "[ffmpeg_consumer]"); // Close the output ffmpeg.\r
 319 \r
 320                 CASPAR_LOG(info) << print() << L" Successfully Uninitialized."; \r
 321         }\r
 322                         \r
 323         std::wstring print() const\r
 324         {\r
 325                 return L"ffmpeg[" + u16(filename_) + L"]";\r
 326         }\r
 327 \r
 328         std::shared_ptr<AVStream> add_video_stream(std::vector<option>& options)\r
 329         { \r
 330                 if(output_format_.vcodec == CODEC_ID_NONE)\r
 331                         return nullptr;\r
 332 \r
 333                 auto st = av_new_stream(oc_.get(), 0);\r
 334                 if (!st)                \r
 335                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate video-stream.") << boost::errinfo_api_function("av_new_stream"));              \r
 336 \r
 337                 auto encoder = avcodec_find_encoder(output_format_.vcodec);\r
 338                 if (!encoder)\r
 339                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Codec not found."));\r
 340 \r
 341                 auto c = st->codec;\r
 342 \r
 343                 avcodec_get_context_defaults3(c, encoder);\r
 344                                 \r
 345                 c->codec_id                     = output_format_.vcodec;\r
 346                 c->codec_type           = AVMEDIA_TYPE_VIDEO;\r
 347                 c->width                        = output_format_.width;\r
 348                 c->height                       = output_format_.height - output_format_.croptop - output_format_.cropbot;\r
 349                 c->time_base.den        = format_desc_.time_scale;\r
 350                 c->time_base.num        = format_desc_.duration;\r
 351                 c->gop_size                     = 25;\r
 352                 c->flags                   |= format_desc_.field_mode == core::field_mode::progressive ? 0 : (CODEC_FLAG_INTERLACED_ME | CODEC_FLAG_INTERLACED_DCT);\r
 353                 if(c->pix_fmt == PIX_FMT_NONE)\r
 354                         c->pix_fmt = PIX_FMT_YUV420P;\r
 355 \r
 356                 if(c->codec_id == CODEC_ID_PRORES)\r
 357                 {                       \r
 358                         c->bit_rate     = c->width < 1280 ? 63*1000000 : 220*1000000;\r
 359                         c->pix_fmt      = PIX_FMT_YUV422P10;\r
 360                 }\r
 361                 else if(c->codec_id == CODEC_ID_DNXHD)\r
 362                 {\r
 363                         if(c->width < 1280 || c->height < 720)\r
 364                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Unsupported video dimensions."));\r
 365 \r
 366                         c->bit_rate     = 220*1000000;\r
 367                         c->pix_fmt      = PIX_FMT_YUV422P;\r
 368                 }\r
 369                 else if(c->codec_id == CODEC_ID_DVVIDEO)\r
 370                 {\r
 371                         c->width = c->height == 1280 ? 960  : c->width;\r
 372                         \r
 373                         if(format_desc_.format == core::video_format::ntsc)\r
 374                                 c->pix_fmt = PIX_FMT_YUV411P;\r
 375                         else if(format_desc_.format == core::video_format::pal)\r
 376                                 c->pix_fmt = PIX_FMT_YUV420P;\r
 377                         else // dv50\r
 378                                 c->pix_fmt = PIX_FMT_YUV422P;\r
 379                         \r
 380                         if(format_desc_.duration == 1001)                       \r
 381                                 c->width = c->height == 1080 ? 1280 : c->width;                 \r
 382                         else\r
 383                                 c->width = c->height == 1080 ? 1440 : c->width;                 \r
 384                 }\r
 385                 else if(c->codec_id == CODEC_ID_H264)\r
 386                 {                          \r
 387                         c->pix_fmt = PIX_FMT_YUV420P;    \r
 388                         if(options.empty())\r
 389                         {\r
 390                                 av_opt_set(c->priv_data, "preset", "ultrafast", 0);\r
 391                                 av_opt_set(c->priv_data, "tune",   "fastdecode",   0);\r
 392                                 av_opt_set(c->priv_data, "crf",    "5",     0);\r
 393                         }\r
 394                 }\r
 395                 else if(c->codec_id == CODEC_ID_QTRLE)\r
 396                 {\r
 397                         c->pix_fmt = PIX_FMT_ARGB;\r
 398                 }\r
 399                                 \r
 400                 c->max_b_frames = 0; // b-frames not supported.\r
 401                                 \r
 402                 boost::range::remove_erase_if(options, [&](const option& o)\r
 403                 {\r
 404                         return o.name.at(0) != 'a' && ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;\r
 405                 });\r
 406                                 \r
 407                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)\r
 408                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 409                 \r
 410                 c->thread_count = boost::thread::hardware_concurrency();\r
 411                 if(avcodec_open(c, encoder) < 0)\r
 412                 {\r
 413                         c->thread_count = 1;\r
 414                         THROW_ON_ERROR2(avcodec_open(c, encoder), "[ffmpeg_consumer]");\r
 415                 }\r
 416 \r
 417                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 418                 {\r
 419                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");\r
 420                         av_freep(&st->codec);\r
 421                         av_freep(&st);\r
 422                 });\r
 423         }\r
 424                 \r
 425         std::shared_ptr<AVStream> add_audio_stream(std::vector<option>& options)\r
 426         {\r
 427                 if(output_format_.acodec == CODEC_ID_NONE)\r
 428                         return nullptr;\r
 429 \r
 430                 auto st = av_new_stream(oc_.get(), 1);\r
 431                 if(!st)\r
 432                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate audio-stream") << boost::errinfo_api_function("av_new_stream"));               \r
 433                 \r
 434                 auto encoder = avcodec_find_encoder(output_format_.acodec);\r
 435                 if (!encoder)\r
 436                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));\r
 437                 \r
 438                 auto c = st->codec;\r
 439 \r
 440                 avcodec_get_context_defaults3(c, encoder);\r
 441 \r
 442                 c->codec_id                     = output_format_.acodec;\r
 443                 c->codec_type           = AVMEDIA_TYPE_AUDIO;\r
 444                 c->sample_rate          = 48000;\r
 445                 c->channels                     = 2;\r
 446                 c->sample_fmt           = AV_SAMPLE_FMT_S16;\r
 447 \r
 448                 if(output_format_.vcodec == CODEC_ID_FLV1)              \r
 449                         c->sample_rate  = 44100;                \r
 450 \r
 451                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)\r
 452                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 453                                 \r
 454                 boost::range::remove_erase_if(options, [&](const option& o)\r
 455                 {\r
 456                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;\r
 457                 });\r
 458 \r
 459                 THROW_ON_ERROR2(avcodec_open(c, encoder), "[ffmpeg_consumer]");\r
 460 \r
 461                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 462                 {\r
 463                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");;\r
 464                         av_freep(&st->codec);\r
 465                         av_freep(&st);\r
 466                 });\r
 467         }\r
 468         \r
 469         std::shared_ptr<AVFrame> convert_video(core::const_frame frame, AVCodecContext* c)\r
 470         {\r
 471                 if(!sws_) \r
 472                 {\r
 473                         sws_.reset(sws_getContext(format_desc_.width, \r
 474                                                                           format_desc_.height - output_format_.croptop  - output_format_.cropbot, \r
 475                                                                           PIX_FMT_BGRA,\r
 476                                                                           c->width,\r
 477                                                                           c->height, \r
 478                                                                           c->pix_fmt, \r
 479                                                                           SWS_BICUBIC, nullptr, nullptr, nullptr), \r
 480                                                 sws_freeContext);\r
 481                         if (sws_ == nullptr) \r
 482                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Cannot initialize the conversion context"));\r
 483                 }\r
 484 \r
 485                 std::shared_ptr<AVFrame> in_frame(avcodec_alloc_frame(), av_free);\r
 486 \r
 487                 avpicture_fill(reinterpret_cast<AVPicture*>(in_frame.get()), \r
 488                                            const_cast<uint8_t*>(frame.image_data().begin()),\r
 489                                            PIX_FMT_BGRA, \r
 490                                            format_desc_.width,\r
 491                                            format_desc_.height - output_format_.croptop  - output_format_.cropbot);\r
 492 \r
 493                 for(int n = 0; n < 4; ++n)              \r
 494                         in_frame->data[n] += in_frame->linesize[n] * output_format_.croptop;            \r
 495                                                                 \r
 496                 std::shared_ptr<AVFrame> out_frame(avcodec_alloc_frame(), av_free);\r
 497 \r
 498                 picture_buf_.resize(avpicture_get_size(c->pix_fmt, \r
 499                                                                                            c->width,\r
 500                                                                                            c->height));\r
 501 \r
 502                 avpicture_fill(reinterpret_cast<AVPicture*>(out_frame.get()),\r
 503                                            picture_buf_.data(), \r
 504                                            c->pix_fmt, \r
 505                                            c->width, \r
 506                                            c->height);\r
 507 \r
 508                 sws_scale(sws_.get(), \r
 509                                   in_frame->data, \r
 510                                   in_frame->linesize,\r
 511                                   0, \r
 512                                   format_desc_.height - output_format_.cropbot - output_format_.croptop, \r
 513                                   out_frame->data, \r
 514                                   out_frame->linesize);\r
 515 \r
 516                 return out_frame;\r
 517         }\r
 518   \r
 519         std::shared_ptr<AVPacket> encode_video_frame(core::const_frame frame)\r
 520         { \r
 521                 auto c = video_st_->codec;\r
 522                 \r
 523                 auto in_time  = static_cast<double>(in_frame_number_) / format_desc_.fps;\r
 524                 auto out_time = static_cast<double>(out_frame_number_) / (static_cast<double>(c->time_base.den) / static_cast<double>(c->time_base.num));\r
 525                 \r
 526                 in_frame_number_++;\r
 527 \r
 528                 if(out_time - in_time > 0.01)\r
 529                         return nullptr;\r
 530  \r
 531                 auto av_frame = convert_video(frame, c);\r
 532                 av_frame->interlaced_frame      = format_desc_.field_mode != core::field_mode::progressive;\r
 533                 av_frame->top_field_first       = format_desc_.field_mode == core::field_mode::upper;\r
 534                 av_frame->pts                           = out_frame_number_++;\r
 535 \r
 536                 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
 537                 if(out_size > 0)\r
 538                 {\r
 539                         spl::shared_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 540                         {\r
 541                                 av_free_packet(p);\r
 542                                 delete p;\r
 543                         });\r
 544                         av_init_packet(pkt.get());\r
 545  \r
 546                         if (c->coded_frame->pts != AV_NOPTS_VALUE)\r
 547                                 pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, video_st_->time_base);\r
 548 \r
 549                         if(c->coded_frame->key_frame)\r
 550                                 pkt->flags |= AV_PKT_FLAG_KEY;\r
 551 \r
 552                         pkt->stream_index       = video_st_->index;\r
 553                         pkt->data                       = video_outbuf_.data();\r
 554                         pkt->size                       = out_size;\r
 555  \r
 556                         av_dup_packet(pkt.get());\r
 557                         return pkt;\r
 558                 }       \r
 559                 return nullptr;\r
 560         }\r
 561                 \r
 562         byte_vector convert_audio(core::const_frame& frame, AVCodecContext* c)\r
 563         {\r
 564                 if(!swr_)               \r
 565                         swr_.reset(new audio_resampler(c->channels, format_desc_.audio_channels, \r
 566                                                                                    c->sample_rate, format_desc_.audio_sample_rate,\r
 567                                                                                    c->sample_fmt, AV_SAMPLE_FMT_S32));\r
 568                 \r
 569 \r
 570                 auto audio_data = frame.audio_data();\r
 571 \r
 572                 std::vector<int8_t,  tbb::cache_aligned_allocator<int8_t>> audio_resample_buffer;\r
 573                 std::copy(reinterpret_cast<const uint8_t*>(audio_data.data()), \r
 574                                   reinterpret_cast<const uint8_t*>(audio_data.data()) + audio_data.size()*4, \r
 575                                   std::back_inserter(audio_resample_buffer));\r
 576                 \r
 577                 audio_resample_buffer = swr_->resample(std::move(audio_resample_buffer));\r
 578                 \r
 579                 return byte_vector(audio_resample_buffer.begin(), audio_resample_buffer.end());\r
 580         }\r
 581         \r
 582         std::shared_ptr<AVPacket> encode_audio_frame(core::const_frame frame)\r
 583         {                       \r
 584                 auto c = audio_st_->codec;\r
 585 \r
 586                 boost::range::push_back(audio_buf_, convert_audio(frame, c));\r
 587                 \r
 588                 std::size_t frame_size = c->frame_size;\r
 589                 \r
 590                 spl::shared_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 591                 {\r
 592                         av_free_packet(p);\r
 593                         delete p;\r
 594                 });\r
 595                 av_init_packet(pkt.get());\r
 596 \r
 597                 if(frame_size > 1)\r
 598                 {                       \r
 599                         auto input_audio_size = frame_size * av_get_bytes_per_sample(c->sample_fmt) * c->channels;\r
 600                    \r
 601                         if(audio_buf_.size() < input_audio_size)\r
 602                                 return nullptr;\r
 603                                         \r
 604                         pkt->size = avcodec_encode_audio(c, audio_outbuf_.data(), static_cast<int>(audio_outbuf_.size()), reinterpret_cast<short*>(audio_buf_.data()));\r
 605                         audio_buf_.erase(audio_buf_.begin(), audio_buf_.begin() + input_audio_size);\r
 606                 }\r
 607                 else\r
 608                 {\r
 609                         audio_outbuf_ = std::move(audio_buf_);          \r
 610                         audio_buf_.clear();\r
 611                         pkt->size = static_cast<int>(audio_outbuf_.size());\r
 612                         pkt->data = audio_outbuf_.data();\r
 613                 }\r
 614                 \r
 615                 if(pkt->size == 0)\r
 616                         return nullptr;\r
 617 \r
 618                 if (c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE)\r
 619                         pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, audio_st_->time_base);\r
 620 \r
 621                 pkt->flags               |= AV_PKT_FLAG_KEY;\r
 622                 pkt->stream_index = audio_st_->index;\r
 623                 pkt->data                 = reinterpret_cast<uint8_t*>(audio_outbuf_.data());\r
 624                 \r
 625                 av_dup_packet(pkt.get());\r
 626                 return pkt;\r
 627         }\r
 628                  \r
 629         void send(core::const_frame& frame)\r
 630         {\r
 631                 encode_executor_.begin_invoke([=]\r
 632                 {               \r
 633                         boost::timer frame_timer;\r
 634 \r
 635                         auto video = encode_video_frame(frame);\r
 636                         auto audio = encode_audio_frame(frame);\r
 637 \r
 638                         graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);\r
 639                         \r
 640                         write_executor_.begin_invoke([=]\r
 641                         {\r
 642                                 if(video)\r
 643                                         av_interleaved_write_frame(oc_.get(), video.get());\r
 644                                 if(audio)\r
 645                                         av_interleaved_write_frame(oc_.get(), audio.get());\r
 646                         });\r
 647                 });\r
 648         }\r
 649 };\r
 650 \r
 651 struct ffmpeg_consumer_proxy : public core::frame_consumer\r
 652 {\r
 653         const std::wstring                              filename_;\r
 654         const std::vector<option>               options_;\r
 655 \r
 656         std::unique_ptr<ffmpeg_consumer> consumer_;\r
 657 \r
 658 public:\r
 659 \r
 660         ffmpeg_consumer_proxy(const std::wstring& filename, const std::vector<option>& options)\r
 661                 : filename_(filename)\r
 662                 , options_(options)\r
 663         {\r
 664         }\r
 665         \r
 666         virtual void initialize(const core::video_format_desc& format_desc, int)\r
 667         {\r
 668                 consumer_.reset();\r
 669                 consumer_.reset(new ffmpeg_consumer(u8(filename_), format_desc, options_));\r
 670         }\r
 671         \r
 672         bool send(core::const_frame frame) override\r
 673         {\r
 674                 consumer_->send(frame);\r
 675                 return true;\r
 676         }\r
 677         \r
 678         std::wstring print() const override\r
 679         {\r
 680                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";\r
 681         }\r
 682 \r
 683         std::wstring name() const override\r
 684         {\r
 685                 return L"file";\r
 686         }\r
 687 \r
 688         boost::property_tree::wptree info() const override\r
 689         {\r
 690                 boost::property_tree::wptree info;\r
 691                 info.add(L"type", L"file");\r
 692                 info.add(L"filename", filename_);\r
 693                 return info;\r
 694         }\r
 695                 \r
 696         bool has_synchronization_clock() const override\r
 697         {\r
 698                 return false;\r
 699         }\r
 700 \r
 701         int buffer_depth() const override\r
 702         {\r
 703                 return 1;\r
 704         }\r
 705 \r
 706         int index() const override\r
 707         {\r
 708                 return 200;\r
 709         }\r
 710 };      \r
 711 spl::shared_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)\r
 712 {\r
 713         if(params.size() < 1 || params[0] != L"FILE")\r
 714                 return core::frame_consumer::empty();\r
 715         \r
 716         auto filename   = (params.size() > 1 ? params[1] : L"");\r
 717                         \r
 718         std::vector<option> options;\r
 719         \r
 720         if(params.size() >= 3)\r
 721         {\r
 722                 for(auto opt_it = params.begin()+2; opt_it != params.end();)\r
 723                 {\r
 724                         auto name  = u8(boost::trim_copy(boost::to_lower_copy(*opt_it++))).substr(1);\r
 725                         auto value = u8(boost::trim_copy(boost::to_lower_copy(*opt_it++)));\r
 726                                 \r
 727                         if(value == "h264")\r
 728                                 value = "libx264";\r
 729                         else if(value == "dvcpro")\r
 730                                 value = "dvvideo";\r
 731 \r
 732                         options.push_back(option(name, value));\r
 733                 }\r
 734         }\r
 735                 \r
 736         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + filename, options);\r
 737 }\r
 738 \r
 739 spl::shared_ptr<core::frame_consumer> create_consumer(const boost::property_tree::wptree& ptree)\r
 740 {\r
 741         auto filename   = ptree.get<std::wstring>(L"path");\r
 742         auto codec              = ptree.get(L"vcodec", L"libx264");\r
 743 \r
 744         std::vector<option> options;\r
 745         options.push_back(option("vcodec", u8(codec)));\r
 746         \r
 747         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + filename, options);\r
 748 }\r
 749 \r
 750 }}\r