git.sesse.net Git - casparcg/blob - modules/ffmpeg/consumer/ffmpeg_consumer.cpp

   1 /*\r
   2 * Copyright 2013 Sveriges Television AB http://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 "../ffmpeg_params.h"\r
  29 #include "../producer/audio/audio_resampler.h"\r
  30 \r
  31 #include <core/parameters/parameters.h>\r
  32 #include <core/mixer/read_frame.h>\r
  33 #include <core/mixer/audio/audio_util.h>\r
  34 #include <core/consumer/frame_consumer.h>\r
  35 #include <core/video_format.h>\r
  36 \r
  37 #include <common/concurrency/executor.h>\r
  38 #include <common/concurrency/future_util.h>\r
  39 #include <common/diagnostics/graph.h>\r
  40 #include <common/env.h>\r
  41 #include <common/utility/string.h>\r
  42 #include <common/memory/memshfl.h>\r
  43 \r
  44 #include <boost/algorithm/string.hpp>\r
  45 #include <boost/timer.hpp>\r
  46 #include <boost/property_tree/ptree.hpp>\r
  47 \r
  48 #include <tbb/cache_aligned_allocator.h>\r
  49 #include <tbb/parallel_invoke.h>\r
  50 #include <tbb/atomic.h>\r
  51 \r
  52 #include <boost/range/algorithm.hpp>\r
  53 #include <boost/range/algorithm_ext.hpp>\r
  54 #include <boost/lexical_cast.hpp>\r
  55 \r
  56 #include <string>\r
  57 \r
  58 #if defined(_MSC_VER)\r
  59 #pragma warning (push)\r
  60 #pragma warning (disable : 4244)\r
  61 #endif\r
  62 extern "C" \r
  63 {\r
  64         #define __STDC_CONSTANT_MACROS\r
  65         #define __STDC_LIMIT_MACROS\r
  66         #include <libavformat/avformat.h>\r
  67         #include <libswscale/swscale.h>\r
  68         #include <libavutil/opt.h>\r
  69         #include <libavutil/pixdesc.h>\r
  70         #include <libavutil/parseutils.h>\r
  71 }\r
  72 #if defined(_MSC_VER)\r
  73 #pragma warning (pop)\r
  74 #endif\r
  75 \r
  76 namespace caspar { namespace ffmpeg {\r
  77         \r
  78 int av_opt_set(void *obj, const char *name, const char *val, int search_flags)\r
  79 {\r
  80         AVClass* av_class = *(AVClass**)obj;\r
  81 \r
  82         if((strcmp(name, "pix_fmt") == 0 || strcmp(name, "pixel_format") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)\r
  83         {\r
  84                 AVCodecContext* c = (AVCodecContext*)obj;               \r
  85                 auto pix_fmt = av_get_pix_fmt(val);\r
  86                 if(pix_fmt == PIX_FMT_NONE)\r
  87                         return -1;              \r
  88                 c->pix_fmt = pix_fmt;\r
  89                 return 0;\r
  90         }\r
  91         if((strcmp(name, "r") == 0 || strcmp(name, "frame_rate") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)\r
  92         {\r
  93                 AVCodecContext* c = (AVCodecContext*)obj;       \r
  94 \r
  95                 if(c->codec_type != AVMEDIA_TYPE_VIDEO)\r
  96                         return -1;\r
  97 \r
  98                 AVRational rate;\r
  99                 int ret = av_parse_video_rate(&rate, val);\r
 100                 if(ret < 0)\r
 101                         return ret;\r
 102 \r
 103                 c->time_base.num = rate.den;\r
 104                 c->time_base.den = rate.num;\r
 105                 return 0;\r
 106         }\r
 107 \r
 108         return ::av_opt_set(obj, name, val, search_flags);\r
 109 }\r
 110 \r
 111 struct output_format\r
 112 {\r
 113         AVOutputFormat* format;\r
 114         int                             width;\r
 115         int                             height;\r
 116         AVCodecID               vcodec;\r
 117         AVCodecID               acodec;\r
 118 \r
 119         output_format(const core::video_format_desc& format_desc, const std::string& filename, std::vector<option>& options)\r
 120                 : format(av_guess_format(nullptr, filename.c_str(), nullptr))\r
 121                 , width(format_desc.width)\r
 122                 , height(format_desc.height)\r
 123                 , vcodec(CODEC_ID_NONE)\r
 124                 , acodec(CODEC_ID_NONE)\r
 125         {\r
 126                 if (format == nullptr)\r
 127                         BOOST_THROW_EXCEPTION(caspar_exception()\r
 128                                 << msg_info(filename + " not a supported file for recording"));\r
 129 \r
 130                 boost::range::remove_erase_if(options, [&](const option& o)\r
 131                 {\r
 132                         return set_opt(o.name, o.value);\r
 133                 });\r
 134                 \r
 135                 if(vcodec == CODEC_ID_NONE)\r
 136                         vcodec = format->video_codec;\r
 137 \r
 138                 if(acodec == CODEC_ID_NONE)\r
 139                         acodec = format->audio_codec;\r
 140                 \r
 141                 if(vcodec == CODEC_ID_NONE)\r
 142                         vcodec = CODEC_ID_H264;\r
 143                 \r
 144                 if(acodec == CODEC_ID_NONE)\r
 145                         acodec = CODEC_ID_PCM_S16LE;\r
 146         }\r
 147         \r
 148         bool set_opt(const std::string& name, const std::string& value)\r
 149         {\r
 150                 //if(name == "target")\r
 151                 //{ \r
 152                 //      enum { PAL, NTSC, FILM, UNKNOWN } norm = UNKNOWN;\r
 153                 //      \r
 154                 //      if(name.find("pal-") != std::string::npos)\r
 155                 //              norm = PAL;\r
 156                 //      else if(name.find("ntsc-") != std::string::npos)\r
 157                 //              norm = NTSC;\r
 158 \r
 159                 //      if(norm == UNKNOWN)\r
 160                 //              BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("target"));\r
 161                 //      \r
 162                 //      if (name.find("-dv") != std::string::npos) \r
 163                 //      {\r
 164                 //              set_opt("f", "dv");\r
 165                 //              set_opt("s", norm == PAL ? "720x576" : "720x480");\r
 166                 //              //set_opt("pix_fmt", name.find("-dv50") != std::string::npos ? "yuv422p" : norm == PAL ? "yuv420p" : "yuv411p");\r
 167                 //              //set_opt("ar", "48000");\r
 168                 //              //set_opt("ac", "2");\r
 169                 //      } \r
 170                 //}\r
 171                 if(name == "f")\r
 172                 {\r
 173                         format = av_guess_format(value.c_str(), nullptr, nullptr);\r
 174 \r
 175                         if(format == nullptr)\r
 176                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("f"));\r
 177 \r
 178                         return true;\r
 179                 }\r
 180                 else if(name == "vcodec")\r
 181                 {\r
 182                         auto c = avcodec_find_encoder_by_name(value.c_str());\r
 183                         if(c == nullptr)\r
 184                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("vcodec"));\r
 185 \r
 186                         vcodec = avcodec_find_encoder_by_name(value.c_str())->id;\r
 187                         return true;\r
 188 \r
 189                 }\r
 190                 else if(name == "acodec")\r
 191                 {\r
 192                         auto c = avcodec_find_encoder_by_name(value.c_str());\r
 193                         if(c == nullptr)\r
 194                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("acodec"));\r
 195 \r
 196                         acodec = avcodec_find_encoder_by_name(value.c_str())->id;\r
 197 \r
 198                         return true;\r
 199                 }\r
 200                 else if(name == "s")\r
 201                 {\r
 202                         if(av_parse_video_size(&width, &height, value.c_str()) < 0)\r
 203                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("s"));\r
 204                         \r
 205                         return true;\r
 206                 }\r
 207 \r
 208                 return false;\r
 209         }\r
 210 };\r
 211 \r
 212 typedef std::vector<uint8_t, tbb::cache_aligned_allocator<uint8_t>>     byte_vector;\r
 213 \r
 214 struct ffmpeg_consumer : boost::noncopyable\r
 215 {               \r
 216         const std::string                                               filename_;\r
 217                 \r
 218         std::shared_ptr<AVFormatContext>                oc_;\r
 219         const core::video_format_desc                   format_desc_;\r
 220         const core::channel_layout                              channel_layout_;\r
 221         \r
 222         const safe_ptr<diagnostics::graph>              graph_;\r
 223 \r
 224         executor                                                                encode_executor_;\r
 225         \r
 226         std::shared_ptr<AVStream>                               audio_st_;\r
 227         std::shared_ptr<AVStream>                               video_st_;\r
 228         \r
 229         byte_vector                                                             audio_outbuf_;\r
 230         byte_vector                                                             audio_buf_;\r
 231         byte_vector                                                             video_outbuf_;\r
 232         byte_vector                                                             key_picture_buf_;\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         bool                                                                    key_only_;\r
 242         tbb::atomic<int64_t>                                    current_encoding_delay_;\r
 243         \r
 244 public:\r
 245         ffmpeg_consumer(const std::string& filename, const core::video_format_desc& format_desc, std::vector<option> options, bool key_only, const core::channel_layout& audio_channel_layout)\r
 246                 : filename_(filename)\r
 247                 , video_outbuf_(1920*1080*8)\r
 248                 , audio_outbuf_(10000)\r
 249                 , format_desc_(format_desc)\r
 250                 , channel_layout_(audio_channel_layout)\r
 251                 , encode_executor_(print())\r
 252                 , in_frame_number_(0)\r
 253                 , out_frame_number_(0)\r
 254                 , output_format_(format_desc, filename, options)\r
 255                 , key_only_(key_only)\r
 256         {\r
 257                 current_encoding_delay_ = 0;\r
 258 \r
 259                 // TODO: Ask stakeholders about case where file already exists.\r
 260                 boost::filesystem::remove(boost::filesystem::wpath(env::media_folder() + widen(filename))); // Delete the file if it exists\r
 261 \r
 262                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 263                 graph_->set_color("dropped-frame", diagnostics::color(0.3f, 0.6f, 0.3f));\r
 264                 graph_->set_text(print());\r
 265                 diagnostics::register_graph(graph_);\r
 266 \r
 267                 encode_executor_.set_capacity(8);\r
 268                                 \r
 269                 AVFormatContext* oc;\r
 270 \r
 271                 THROW_ON_ERROR2(avformat_alloc_output_context2(\r
 272                         &oc, \r
 273                         output_format_.format, \r
 274                         nullptr, \r
 275                         filename_.c_str()), "[ffmpeg_consumer]");\r
 276 \r
 277                 oc_.reset(oc);\r
 278                                                                 \r
 279                 //  Add the audio and video streams using the default format codecs     and initialize the codecs.\r
 280                 auto options2 = options;\r
 281                 video_st_ = add_video_stream(options2);\r
 282 \r
 283                 if (!key_only)\r
 284                         audio_st_ = add_audio_stream(options);\r
 285                                 \r
 286                 av_dump_format(oc_.get(), 0, filename_.c_str(), 1);\r
 287                  \r
 288                 // Open the output ffmpeg, if needed.\r
 289                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 290                         THROW_ON_ERROR2(avio_open2(&oc_->pb, filename_.c_str(), AVIO_FLAG_WRITE, NULL, NULL), "[ffmpeg_consumer]");\r
 291                                 \r
 292                 THROW_ON_ERROR2(avformat_write_header(oc_.get(), nullptr), "[ffmpeg_consumer]");\r
 293 \r
 294                 if(options.size() > 0)\r
 295                 {\r
 296                         BOOST_FOREACH(auto& option, options)\r
 297                                 CASPAR_LOG(warning) << L"Invalid option: -" << widen(option.name) << L" " << widen(option.value);\r
 298                 }\r
 299 \r
 300                 CASPAR_LOG(info) << print() << L" Successfully Initialized.";   \r
 301         }\r
 302 \r
 303         ~ffmpeg_consumer()\r
 304         {    \r
 305                 encode_executor_.stop();\r
 306                 encode_executor_.join();\r
 307 \r
 308                 LOG_ON_ERROR2(av_write_trailer(oc_.get()), "[ffmpeg_consumer]");\r
 309                 \r
 310                 if (!key_only_)\r
 311                         audio_st_.reset();\r
 312                 video_st_.reset();\r
 313                           \r
 314                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 315                         LOG_ON_ERROR2(avio_close(oc_->pb), "[ffmpeg_consumer]"); // Close the output ffmpeg.\r
 316 \r
 317                 CASPAR_LOG(info) << print() << L" Successfully Uninitialized."; \r
 318         }\r
 319                         \r
 320         std::wstring print() const\r
 321         {\r
 322                 return L"ffmpeg[" + widen(filename_) + L"]";\r
 323         }\r
 324 \r
 325         std::shared_ptr<AVStream> add_video_stream(std::vector<option>& options)\r
 326         { \r
 327                 if(output_format_.vcodec == CODEC_ID_NONE)\r
 328                         return nullptr;\r
 329 \r
 330                 auto st = av_new_stream(oc_.get(), 0);\r
 331                 if (!st)                \r
 332                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate video-stream.") << boost::errinfo_api_function("av_new_stream"));              \r
 333 \r
 334                 auto encoder = avcodec_find_encoder(output_format_.vcodec);\r
 335                 if (!encoder)\r
 336                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Codec not found."));\r
 337 \r
 338                 auto c = st->codec;\r
 339 \r
 340                 avcodec_get_context_defaults3(c, encoder);\r
 341                                 \r
 342                 c->codec_id                     = output_format_.vcodec;\r
 343                 c->codec_type           = AVMEDIA_TYPE_VIDEO;\r
 344                 c->width                        = output_format_.width;\r
 345                 c->height                       = output_format_.height;\r
 346                 c->time_base.den        = format_desc_.time_scale;\r
 347                 c->time_base.num        = format_desc_.duration;\r
 348                 c->gop_size                     = 25;\r
 349                 c->flags                   |= format_desc_.field_mode == core::field_mode::progressive ? 0 : (CODEC_FLAG_INTERLACED_ME | CODEC_FLAG_INTERLACED_DCT);\r
 350                 if(c->pix_fmt == PIX_FMT_NONE)\r
 351                         c->pix_fmt = PIX_FMT_YUV420P;\r
 352 \r
 353                 if(c->codec_id == CODEC_ID_PRORES)\r
 354                 {                       \r
 355                         c->bit_rate     = c->width < 1280 ? 63*1000000 : 220*1000000;\r
 356                         c->pix_fmt      = PIX_FMT_YUV422P10;\r
 357                 }\r
 358                 else if(c->codec_id == CODEC_ID_DNXHD)\r
 359                 {\r
 360                         if(c->width < 1280 || c->height < 720)\r
 361                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Unsupported video dimensions."));\r
 362 \r
 363                         c->bit_rate     = 220*1000000;\r
 364                         c->pix_fmt      = PIX_FMT_YUV422P;\r
 365                 }\r
 366                 else if(c->codec_id == CODEC_ID_DVVIDEO)\r
 367                 {\r
 368                         c->width = c->height == 1280 ? 960  : c->width;\r
 369                         \r
 370                         if(format_desc_.format == core::video_format::ntsc)\r
 371                                 c->pix_fmt = PIX_FMT_YUV411P;\r
 372                         else if(format_desc_.format == core::video_format::pal)\r
 373                                 c->pix_fmt = PIX_FMT_YUV420P;\r
 374                         else // dv50\r
 375                                 c->pix_fmt = PIX_FMT_YUV422P;\r
 376                         \r
 377                         if(format_desc_.duration == 1001)                       \r
 378                                 c->width = c->height == 1080 ? 1280 : c->width;                 \r
 379                         else\r
 380                                 c->width = c->height == 1080 ? 1440 : c->width;                 \r
 381                 }\r
 382                 else if(c->codec_id == CODEC_ID_H264)\r
 383                 {                          \r
 384                         c->pix_fmt = PIX_FMT_YUV420P;    \r
 385                         if(options.empty())\r
 386                         {\r
 387                                 av_opt_set(c->priv_data, "preset", "ultrafast", 0);\r
 388                                 av_opt_set(c->priv_data, "tune",   "fastdecode",   0);\r
 389                                 av_opt_set(c->priv_data, "crf",    "5",     0);\r
 390                         }\r
 391                 }\r
 392                 else if(c->codec_id == CODEC_ID_QTRLE)\r
 393                 {\r
 394                         c->pix_fmt = PIX_FMT_ARGB;\r
 395                 }\r
 396                                 \r
 397                 c->max_b_frames = 0; // b-frames not supported.\r
 398                                 \r
 399                 boost::range::remove_erase_if(options, [&](const option& o)\r
 400                 {\r
 401                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1 ||\r
 402                                    ffmpeg::av_opt_set(c->priv_data, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;\r
 403                 });\r
 404                                 \r
 405                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)\r
 406                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 407                 \r
 408                 c->thread_count = boost::thread::hardware_concurrency();\r
 409                 if(avcodec_open2(c, encoder, nullptr) < 0)\r
 410                 {\r
 411                         c->thread_count = 1;\r
 412                         THROW_ON_ERROR2(avcodec_open2(c, encoder, nullptr), "[ffmpeg_consumer]");\r
 413                 }\r
 414 \r
 415                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 416                 {\r
 417                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");\r
 418                         av_freep(&st->codec);\r
 419                         av_freep(&st);\r
 420                 });\r
 421         }\r
 422                 \r
 423         std::shared_ptr<AVStream> add_audio_stream(std::vector<option>& options)\r
 424         {\r
 425                 if(output_format_.acodec == CODEC_ID_NONE)\r
 426                         return nullptr;\r
 427 \r
 428                 auto st = av_new_stream(oc_.get(), 1);\r
 429                 if(!st)\r
 430                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate audio-stream") << boost::errinfo_api_function("av_new_stream"));               \r
 431                 \r
 432                 auto encoder = avcodec_find_encoder(output_format_.acodec);\r
 433                 if (!encoder)\r
 434                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));\r
 435                 \r
 436                 auto c = st->codec;\r
 437 \r
 438                 avcodec_get_context_defaults3(c, encoder);\r
 439 \r
 440                 c->codec_id                     = output_format_.acodec;\r
 441                 c->codec_type           = AVMEDIA_TYPE_AUDIO;\r
 442                 c->sample_rate          = 48000;\r
 443                 c->channels                     = channel_layout_.num_channels;\r
 444                 c->sample_fmt           = AV_SAMPLE_FMT_S16;\r
 445 \r
 446                 if(output_format_.vcodec == CODEC_ID_FLV1)              \r
 447                         c->sample_rate  = 44100;                \r
 448 \r
 449                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)\r
 450                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 451                                 \r
 452                 boost::range::remove_erase_if(options, [&](const option& o)\r
 453                 {\r
 454                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;\r
 455                 });\r
 456 \r
 457                 THROW_ON_ERROR2(avcodec_open2(c, encoder, nullptr), "[ffmpeg_consumer]");\r
 458 \r
 459                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 460                 {\r
 461                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");;\r
 462                         av_freep(&st->codec);\r
 463                         av_freep(&st);\r
 464                 });\r
 465         }\r
 466 \r
 467         std::shared_ptr<AVFrame> convert_video(core::read_frame& frame, AVCodecContext* c)\r
 468         {\r
 469                 if(!sws_) \r
 470                 {\r
 471                         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
 472                         if (sws_ == nullptr) \r
 473                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Cannot initialize the conversion context"));\r
 474                 }\r
 475 \r
 476                 std::shared_ptr<AVFrame> in_frame(avcodec_alloc_frame(), av_free);\r
 477                 auto in_picture = reinterpret_cast<AVPicture*>(in_frame.get());\r
 478 \r
 479                 if (key_only_)\r
 480                 {\r
 481                         key_picture_buf_.resize(frame.image_data().size());\r
 482                         in_picture->linesize[0] = format_desc_.width * 4;\r
 483                         in_picture->data[0] = key_picture_buf_.data();\r
 484 \r
 485                         fast_memshfl(in_picture->data[0], frame.image_data().begin(), frame.image_data().size(), 0x0F0F0F0F, 0x0B0B0B0B, 0x07070707, 0x03030303);\r
 486                 }\r
 487                 else\r
 488                 {\r
 489                         avpicture_fill(in_picture, const_cast<uint8_t*>(frame.image_data().begin()), PIX_FMT_BGRA, format_desc_.width, format_desc_.height);\r
 490                 }\r
 491 \r
 492                 std::shared_ptr<AVFrame> out_frame(avcodec_alloc_frame(), av_free);\r
 493                 picture_buf_.resize(avpicture_get_size(c->pix_fmt, c->width, c->height));\r
 494                 avpicture_fill(reinterpret_cast<AVPicture*>(out_frame.get()), picture_buf_.data(), c->pix_fmt, c->width, c->height);\r
 495 \r
 496                 sws_scale(sws_.get(), in_frame->data, in_frame->linesize, 0, format_desc_.height, out_frame->data, out_frame->linesize);\r
 497 \r
 498                 return out_frame;\r
 499         }\r
 500   \r
 501         void encode_video_frame(core::read_frame& frame)\r
 502         { \r
 503                 auto c = video_st_->codec;\r
 504                 \r
 505                 auto in_time  = static_cast<double>(in_frame_number_) / format_desc_.fps;\r
 506                 auto out_time = static_cast<double>(out_frame_number_) / (static_cast<double>(c->time_base.den) / static_cast<double>(c->time_base.num));\r
 507                 \r
 508                 in_frame_number_++;\r
 509 \r
 510                 if(out_time - in_time > 0.01)\r
 511                         return;\r
 512  \r
 513                 auto av_frame = convert_video(frame, c);\r
 514                 av_frame->interlaced_frame      = format_desc_.field_mode != core::field_mode::progressive;\r
 515                 av_frame->top_field_first       = format_desc_.field_mode == core::field_mode::upper;\r
 516                 av_frame->pts                           = out_frame_number_++;\r
 517 \r
 518                 int out_size = THROW_ON_ERROR2(avcodec_encode_video(c, video_outbuf_.data(), video_outbuf_.size(), av_frame.get()), "[ffmpeg_consumer]");\r
 519                 if(out_size == 0)\r
 520                         return;\r
 521                                 \r
 522                 safe_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 523                 {\r
 524                         av_free_packet(p);\r
 525                         delete p;\r
 526                 });\r
 527                 av_init_packet(pkt.get());\r
 528  \r
 529                 if (c->coded_frame->pts != AV_NOPTS_VALUE)\r
 530                         pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, video_st_->time_base);\r
 531 \r
 532                 if(c->coded_frame->key_frame)\r
 533                         pkt->flags |= AV_PKT_FLAG_KEY;\r
 534 \r
 535                 pkt->stream_index       = video_st_->index;\r
 536                 pkt->data                       = video_outbuf_.data();\r
 537                 pkt->size                       = out_size;\r
 538                         \r
 539                 av_interleaved_write_frame(oc_.get(), pkt.get());               \r
 540         }\r
 541                 \r
 542         byte_vector convert_audio(core::read_frame& frame, AVCodecContext* c)\r
 543         {\r
 544                 if(!swr_)               \r
 545                         swr_.reset(new audio_resampler(c->channels, frame.num_channels(), \r
 546                                                                                    c->sample_rate, format_desc_.audio_sample_rate,\r
 547                                                                                    c->sample_fmt, AV_SAMPLE_FMT_S32));\r
 548                 \r
 549 \r
 550                 auto audio_data = frame.audio_data();\r
 551 \r
 552                 std::vector<int8_t,  tbb::cache_aligned_allocator<int8_t>> audio_resample_buffer;\r
 553                 std::copy(reinterpret_cast<const uint8_t*>(audio_data.begin()), \r
 554                                   reinterpret_cast<const uint8_t*>(audio_data.begin()) + audio_data.size()*4, \r
 555                                   std::back_inserter(audio_resample_buffer));\r
 556                 \r
 557                 audio_resample_buffer = swr_->resample(std::move(audio_resample_buffer));\r
 558                 \r
 559                 return byte_vector(audio_resample_buffer.begin(), audio_resample_buffer.end());\r
 560         }\r
 561 \r
 562         void encode_audio_frame(core::read_frame& frame)\r
 563         {                       \r
 564                 auto c = audio_st_->codec;\r
 565 \r
 566                 boost::range::push_back(audio_buf_, convert_audio(frame, c));\r
 567                 \r
 568                 std::size_t frame_size = c->frame_size;\r
 569                 auto input_audio_size = frame_size * av_get_bytes_per_sample(c->sample_fmt) * c->channels;\r
 570                 \r
 571                 while(audio_buf_.size() >= input_audio_size)\r
 572                 {\r
 573                         safe_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 574                         {\r
 575                                 av_free_packet(p);\r
 576                                 delete p;\r
 577                         });\r
 578                         av_init_packet(pkt.get());\r
 579 \r
 580                         if(frame_size > 1)\r
 581                         {                                                               \r
 582                                 pkt->size = avcodec_encode_audio(c, audio_outbuf_.data(), audio_outbuf_.size(), reinterpret_cast<short*>(audio_buf_.data()));\r
 583                                 audio_buf_.erase(audio_buf_.begin(), audio_buf_.begin() + input_audio_size);\r
 584                         }\r
 585                         else\r
 586                         {\r
 587                                 audio_outbuf_ = std::move(audio_buf_);          \r
 588                                 audio_buf_.clear();\r
 589                                 pkt->size = audio_outbuf_.size();\r
 590                                 pkt->data = audio_outbuf_.data();\r
 591                         }\r
 592                 \r
 593                         if(pkt->size == 0)\r
 594                                 return;\r
 595 \r
 596                         if (c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE)\r
 597                                 pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, audio_st_->time_base);\r
 598 \r
 599                         pkt->flags               |= AV_PKT_FLAG_KEY;\r
 600                         pkt->stream_index = audio_st_->index;\r
 601                         pkt->data                 = reinterpret_cast<uint8_t*>(audio_outbuf_.data());\r
 602                 \r
 603                         av_interleaved_write_frame(oc_.get(), pkt.get());\r
 604                 }\r
 605         }\r
 606                  \r
 607         void send(const safe_ptr<core::read_frame>& frame)\r
 608         {\r
 609                 encode_executor_.begin_invoke([=]\r
 610                 {               \r
 611                         boost::timer frame_timer;\r
 612 \r
 613                         encode_video_frame(*frame);\r
 614 \r
 615                         if (!key_only_)\r
 616                                 encode_audio_frame(*frame);\r
 617 \r
 618                         graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);\r
 619                         current_encoding_delay_ = frame->get_age_millis();\r
 620                 });\r
 621         }\r
 622 \r
 623         bool ready_for_frame()\r
 624         {\r
 625                 return encode_executor_.size() < encode_executor_.capacity();\r
 626         }\r
 627 \r
 628         void mark_dropped()\r
 629         {\r
 630                 graph_->set_tag("dropped-frame");\r
 631 \r
 632                 // TODO: adjust PTS accordingly to make dropped frames contribute\r
 633                 //       to the total playing time\r
 634         }\r
 635 };\r
 636 \r
 637 struct ffmpeg_consumer_proxy : public core::frame_consumer\r
 638 {\r
 639         const std::wstring                              filename_;\r
 640         const std::vector<option>               options_;\r
 641         const bool                                              separate_key_;\r
 642         core::video_format_desc                 format_desc_;\r
 643 \r
 644         std::unique_ptr<ffmpeg_consumer> consumer_;\r
 645         std::unique_ptr<ffmpeg_consumer> key_only_consumer_;\r
 646 \r
 647 public:\r
 648 \r
 649         ffmpeg_consumer_proxy(const std::wstring& filename, const std::vector<option>& options, bool separate_key_)\r
 650                 : filename_(filename)\r
 651                 , options_(options)\r
 652                 , separate_key_(separate_key_)\r
 653         {\r
 654         }\r
 655         \r
 656         virtual void initialize(const core::video_format_desc& format_desc, int)\r
 657         {\r
 658                 format_desc_ = format_desc;\r
 659         }\r
 660 \r
 661         virtual int64_t presentation_frame_age_millis() const override\r
 662         {\r
 663                 return consumer_ ? consumer_->current_encoding_delay_ : 0;\r
 664         }\r
 665         \r
 666         virtual boost::unique_future<bool> send(const safe_ptr<core::read_frame>& frame) override\r
 667         {\r
 668                 if (!consumer_)\r
 669                         do_initialize(frame->multichannel_view().channel_layout());\r
 670 \r
 671                 bool ready_for_frame = consumer_->ready_for_frame();\r
 672 \r
 673                 if (ready_for_frame && separate_key_)\r
 674                         ready_for_frame = ready_for_frame && key_only_consumer_->ready_for_frame();\r
 675 \r
 676                 if (ready_for_frame)\r
 677                 {\r
 678                         consumer_->send(frame);\r
 679 \r
 680                         if (separate_key_)\r
 681                                 key_only_consumer_->send(frame);\r
 682                 }\r
 683                 else\r
 684                 {\r
 685                         consumer_->mark_dropped();\r
 686 \r
 687                         if (separate_key_)\r
 688                                 key_only_consumer_->mark_dropped();\r
 689                 }\r
 690 \r
 691                 return caspar::wrap_as_future(true);\r
 692         }\r
 693         \r
 694         virtual std::wstring print() const override\r
 695         {\r
 696                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";\r
 697         }\r
 698 \r
 699         virtual boost::property_tree::wptree info() const override\r
 700         {\r
 701                 boost::property_tree::wptree info;\r
 702                 info.add(L"type", L"ffmpeg-consumer");\r
 703                 info.add(L"filename", filename_);\r
 704                 info.add(L"separate_key", separate_key_);\r
 705                 return info;\r
 706         }\r
 707                 \r
 708         virtual bool has_synchronization_clock() const override\r
 709         {\r
 710                 return false;\r
 711         }\r
 712 \r
 713         virtual size_t buffer_depth() const override\r
 714         {\r
 715                 return 1;\r
 716         }\r
 717 \r
 718         virtual int index() const override\r
 719         {\r
 720                 return 200;\r
 721         }\r
 722 private:\r
 723         void do_initialize(const core::channel_layout& channel_layout)\r
 724         {\r
 725                 consumer_.reset();\r
 726                 key_only_consumer_.reset();\r
 727                 consumer_.reset(new ffmpeg_consumer(\r
 728                                 narrow(filename_),\r
 729                                 format_desc_,\r
 730                                 options_,\r
 731                                 false,\r
 732                                 channel_layout));\r
 733 \r
 734                 if (separate_key_)\r
 735                 {\r
 736                         boost::filesystem::wpath fill_file(filename_);\r
 737                         auto without_extension = fill_file.stem();\r
 738                         auto key_file = env::media_folder() + without_extension + L"_A" + fill_file.extension();\r
 739                         \r
 740                         key_only_consumer_.reset(new ffmpeg_consumer(\r
 741                                         narrow(key_file),\r
 742                                         format_desc_,\r
 743                                         options_,\r
 744                                         true,\r
 745                                         channel_layout));\r
 746                 }\r
 747         }\r
 748 };      \r
 749 \r
 750 safe_ptr<core::frame_consumer> create_consumer(const core::parameters& params)\r
 751 {\r
 752         if(params.size() < 1 || params[0] != L"FILE")\r
 753                 return core::frame_consumer::empty();\r
 754 \r
 755         auto params2 = params;\r
 756         \r
 757         auto filename   = (params2.size() > 1 ? params2[1] : L"");\r
 758         bool separate_key = params2.remove_if_exists(L"SEPARATE_KEY");\r
 759 \r
 760         std::vector<option> options;\r
 761         \r
 762         if (params2.size() >= 3)\r
 763         {\r
 764                 for (auto opt_it = params2.begin() + 2; opt_it != params2.end();)\r
 765                 {\r
 766                         auto name  = narrow(boost::trim_copy(boost::to_lower_copy(*opt_it++))).substr(1);\r
 767 \r
 768                         if (opt_it == params2.end())\r
 769                                 break;\r
 770 \r
 771                         auto value = narrow(boost::trim_copy(boost::to_lower_copy(*opt_it++)));\r
 772                                 \r
 773                         if (value == "h264")\r
 774                                 value = "libx264";\r
 775                         else if (value == "dvcpro")\r
 776                                 value = "dvvideo";\r
 777 \r
 778                         options.push_back(option(name, value));\r
 779                 }\r
 780         }\r
 781                 \r
 782         return make_safe<ffmpeg_consumer_proxy>(env::media_folder() + filename, options, separate_key);\r
 783 }\r
 784 \r
 785 safe_ptr<core::frame_consumer> create_consumer(const boost::property_tree::wptree& ptree)\r
 786 {\r
 787         auto filename           = ptree.get<std::wstring>(L"path");\r
 788         auto codec                      = ptree.get(L"vcodec", L"libx264");\r
 789         auto separate_key       = ptree.get(L"separate-key", false);\r
 790 \r
 791         std::vector<option> options;\r
 792         options.push_back(option("vcodec", narrow(codec)));\r
 793         \r
 794         return make_safe<ffmpeg_consumer_proxy>(env::media_folder() + filename, options, separate_key);\r
 795 }\r
 796 \r
 797 }}\r