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

   1 /*\r
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 * This file is part of CasparCG (www.casparcg.com).\r
   5 *\r
   6 * CasparCG is free software: you can redistribute it and/or modify\r
   7 * it under the terms of the GNU General Public License as published by\r
   8 * the Free Software Foundation, either version 3 of the License, or\r
   9 * (at your option) any later version.\r
  10 *\r
  11 * CasparCG is distributed in the hope that it will be useful,\r
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14 * GNU General Public License for more details.\r
  15 *\r
  16 * You should have received a copy of the GNU General Public License\r
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.\r
  18 *\r
  19 * Author: Robert Nagy, ronag89@gmail.com\r
  20 */\r
  21  \r
  22 #include "../StdAfx.h"\r
  23 \r
  24 #include "../ffmpeg_error.h"\r
  25 \r
  26 #include "ffmpeg_consumer.h"\r
  27 \r
  28 #include "../producer/audio/audio_resampler.h"\r
  29 \r
  30 #include <core/frame/frame.h>\r
  31 #include <core/mixer/audio/audio_util.h>\r
  32 #include <core/consumer/frame_consumer.h>\r
  33 #include <core/video_format.h>\r
  34 \r
  35 #include <common/env.h>\r
  36 #include <common/utf.h>\r
  37 #include <common/param.h>\r
  38 #include <common/executor.h>\r
  39 #include <common/diagnostics/graph.h>\r
  40 #include <common/array.h>\r
  41 #include <common/memory.h>\r
  42 \r
  43 #include <boost/algorithm/string.hpp>\r
  44 #include <boost/timer.hpp>\r
  45 #include <boost/property_tree/ptree.hpp>\r
  46 #include <boost/filesystem.hpp>\r
  47 #include <boost/range/algorithm.hpp>\r
  48 #include <boost/range/algorithm_ext.hpp>\r
  49 #include <boost/lexical_cast.hpp>\r
  50 \r
  51 #if defined(_MSC_VER)\r
  52 #pragma warning (push)\r
  53 #pragma warning (disable : 4244)\r
  54 #endif\r
  55 extern "C" \r
  56 {\r
  57         #define __STDC_CONSTANT_MACROS\r
  58         #define __STDC_LIMIT_MACROS\r
  59         #include <libavformat/avformat.h>\r
  60         #include <libswscale/swscale.h>\r
  61         #include <libavutil/opt.h>\r
  62         #include <libavutil/pixdesc.h>\r
  63         #include <libavutil/parseutils.h>\r
  64 }\r
  65 #if defined(_MSC_VER)\r
  66 #pragma warning (pop)\r
  67 #endif\r
  68 \r
  69 namespace caspar { namespace ffmpeg {\r
  70         \r
  71 int av_opt_set(void *obj, const char *name, const char *val, int search_flags)\r
  72 {\r
  73         AVClass* av_class = *(AVClass**)obj;\r
  74 \r
  75         if((strcmp(name, "pix_fmt") == 0 || strcmp(name, "pixel_format") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)\r
  76         {\r
  77                 AVCodecContext* c = (AVCodecContext*)obj;               \r
  78                 auto pix_fmt = av_get_pix_fmt(val);\r
  79                 if(pix_fmt == PIX_FMT_NONE)\r
  80                         return -1;              \r
  81                 c->pix_fmt = pix_fmt;\r
  82                 return 0;\r
  83         }\r
  84         if((strcmp(name, "r") == 0 || strcmp(name, "frame_rate") == 0) && strcmp(av_class->class_name, "AVCodecContext") == 0)\r
  85         {\r
  86                 AVCodecContext* c = (AVCodecContext*)obj;       \r
  87 \r
  88                 if(c->codec_type != AVMEDIA_TYPE_VIDEO)\r
  89                         return -1;\r
  90 \r
  91                 AVRational rate;\r
  92                 int ret = av_parse_video_rate(&rate, val);\r
  93                 if(ret < 0)\r
  94                         return ret;\r
  95 \r
  96                 c->time_base.num = rate.den;\r
  97                 c->time_base.den = rate.num;\r
  98                 return 0;\r
  99         }\r
 100 \r
 101         return ::av_opt_set(obj, name, val, search_flags);\r
 102 }\r
 103 \r
 104 struct option\r
 105 {\r
 106         std::string name;\r
 107         std::string value;\r
 108 \r
 109         option(std::string name, std::string value)\r
 110                 : name(std::move(name))\r
 111                 , value(std::move(value))\r
 112         {\r
 113         }\r
 114 };\r
 115         \r
 116 struct output_format\r
 117 {\r
 118         AVOutputFormat* format;\r
 119         int                             width;\r
 120         int                             height;\r
 121         CodecID                 vcodec;\r
 122         CodecID                 acodec;\r
 123         int                             croptop;\r
 124         int                             cropbot;\r
 125         int                             cropleft;\r
 126         int                             cropright;\r
 127 \r
 128         output_format(const core::video_format_desc& format_desc, const std::string& filename, std::vector<option>& options)\r
 129                 : format(av_guess_format(nullptr, filename.c_str(), nullptr))\r
 130                 , width(format_desc.width)\r
 131                 , height(format_desc.height)\r
 132                 , vcodec(CODEC_ID_NONE)\r
 133                 , acodec(CODEC_ID_NONE)\r
 134                 , croptop(0)\r
 135                 , cropbot(0)\r
 136                 , cropleft(0)\r
 137                 , cropright(0)\r
 138         {\r
 139                 boost::range::remove_erase_if(options, [&](const option& o)\r
 140                 {\r
 141                         return set_opt(o.name, o.value);\r
 142                 });\r
 143                 \r
 144                 if(vcodec == CODEC_ID_NONE)\r
 145                         vcodec = format->video_codec;\r
 146 \r
 147                 if(acodec == CODEC_ID_NONE)\r
 148                         acodec = format->audio_codec;\r
 149                 \r
 150                 if(vcodec == CODEC_ID_NONE)\r
 151                         vcodec = CODEC_ID_H264;\r
 152                 \r
 153                 if(acodec == CODEC_ID_NONE)\r
 154                         acodec = CODEC_ID_PCM_S16LE;\r
 155         }\r
 156         \r
 157         bool set_opt(const std::string& name, const std::string& value)\r
 158         {\r
 159                 //if(name == "target")\r
 160                 //{ \r
 161                 //      enum { PAL, NTSC, FILM, UNKNOWN } norm = UNKNOWN;\r
 162                 //      \r
 163                 //      if(name.find("pal-") != std::string::npos)\r
 164                 //              norm = PAL;\r
 165                 //      else if(name.find("ntsc-") != std::string::npos)\r
 166                 //              norm = NTSC;\r
 167 \r
 168                 //      if(norm == UNKNOWN)\r
 169                 //              BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("target"));\r
 170                 //      \r
 171                 //      if (name.find("-dv") != std::string::npos) \r
 172                 //      {\r
 173                 //              set_opt("f", "dv");\r
 174                 //              set_opt("s", norm == PAL ? "720x576" : "720x480");\r
 175                 //              //set_opt("pix_fmt", name.find("-dv50") != std::string::npos ? "yuv422p" : norm == PAL ? "yuv420p" : "yuv411p");\r
 176                 //              //set_opt("ar", "48000");\r
 177                 //              //set_opt("ac", "2");\r
 178                 //      } \r
 179                 //}\r
 180                 if(name == "f")\r
 181                 {\r
 182                         format = av_guess_format(value.c_str(), nullptr, nullptr);\r
 183 \r
 184                         if(format == nullptr)\r
 185                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("f"));\r
 186 \r
 187                         return true;\r
 188                 }\r
 189                 else if(name == "vcodec")\r
 190                 {\r
 191                         auto c = avcodec_find_encoder_by_name(value.c_str());\r
 192                         if(c == nullptr)\r
 193                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("vcodec"));\r
 194 \r
 195                         vcodec = avcodec_find_encoder_by_name(value.c_str())->id;\r
 196                         return true;\r
 197 \r
 198                 }\r
 199                 else if(name == "acodec")\r
 200                 {\r
 201                         auto c = avcodec_find_encoder_by_name(value.c_str());\r
 202                         if(c == nullptr)\r
 203                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("acodec"));\r
 204 \r
 205                         acodec = avcodec_find_encoder_by_name(value.c_str())->id;\r
 206 \r
 207                         return true;\r
 208                 }\r
 209                 else if(name == "s")\r
 210                 {\r
 211                         if(av_parse_video_size(&width, &height, value.c_str()) < 0)\r
 212                                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("s"));\r
 213                         \r
 214                         return true;\r
 215                 }\r
 216                 else if(name == "croptop")\r
 217                 {\r
 218                         croptop = boost::lexical_cast<int>(value);\r
 219 \r
 220                         return true;\r
 221                 }\r
 222                 else if(name == "cropbot")\r
 223                 {\r
 224                         cropbot = boost::lexical_cast<int>(value);\r
 225 \r
 226                         return true;\r
 227                 }\r
 228                 else if(name == "cropleft")\r
 229                 {\r
 230                         cropleft = boost::lexical_cast<int>(value);\r
 231 \r
 232                         return true;\r
 233                 }\r
 234                 else if(name == "cropright")\r
 235                 {\r
 236                         cropright = boost::lexical_cast<int>(value);\r
 237 \r
 238                         return true;\r
 239                 }\r
 240                 \r
 241                 return false;\r
 242         }\r
 243 };\r
 244 \r
 245 typedef std::vector<uint8_t, tbb::cache_aligned_allocator<uint8_t>>     byte_vector;\r
 246 \r
 247 struct ffmpeg_consumer : boost::noncopyable\r
 248 {               \r
 249         const std::string                                               filename_;\r
 250                 \r
 251         const std::shared_ptr<AVFormatContext>  oc_;\r
 252         const core::video_format_desc                   format_desc_;\r
 253         \r
 254         const spl::shared_ptr<diagnostics::graph>               graph_;\r
 255 \r
 256         executor                                                                encode_executor_;\r
 257         executor                                                                write_executor_;\r
 258         \r
 259         std::shared_ptr<AVStream>                               audio_st_;\r
 260         std::shared_ptr<AVStream>                               video_st_;\r
 261         \r
 262         byte_vector                                                             audio_outbuf_;\r
 263         byte_vector                                                             audio_buf_;\r
 264         byte_vector                                                             video_outbuf_;\r
 265         byte_vector                                                             picture_buf_;\r
 266         std::shared_ptr<audio_resampler>                swr_;\r
 267         std::shared_ptr<SwsContext>                             sws_;\r
 268 \r
 269         int64_t                                                                 in_frame_number_;\r
 270         int64_t                                                                 out_frame_number_;\r
 271 \r
 272         output_format                                                   output_format_;\r
 273         \r
 274 public:\r
 275         ffmpeg_consumer(const std::string& filename, const core::video_format_desc& format_desc, std::vector<option> options)\r
 276                 : filename_(filename)\r
 277                 , video_outbuf_(1920*1080*8)\r
 278                 , audio_outbuf_(10000)\r
 279                 , oc_(avformat_alloc_context(), av_free)\r
 280                 , format_desc_(format_desc)\r
 281                 , encode_executor_(print())\r
 282                 , write_executor_(print() + L"/output")\r
 283                 , in_frame_number_(0)\r
 284                 , out_frame_number_(0)\r
 285                 , output_format_(format_desc, filename, options)\r
 286         {\r
 287                 // TODO: Ask stakeholders about case where file already exists.\r
 288                 boost::filesystem::remove(boost::filesystem::path(env::media_folder() + u16(filename))); // Delete the file if it exists\r
 289 \r
 290                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 291                 graph_->set_text(print());\r
 292                 diagnostics::register_graph(graph_);\r
 293 \r
 294                 encode_executor_.set_capacity(8);\r
 295                 write_executor_.set_capacity(8);\r
 296 \r
 297                 oc_->oformat = output_format_.format;\r
 298                                 \r
 299                 THROW_ON_ERROR2(av_set_parameters(oc_.get(), nullptr), "[ffmpeg_consumer]");\r
 300 \r
 301                 strcpy_s(oc_->filename, filename_.c_str());\r
 302                 \r
 303                 //  Add the audio and video streams using the default format codecs     and initialize the codecs.\r
 304                 auto options2 = options;\r
 305                 video_st_ = add_video_stream(options2);\r
 306                 audio_st_ = add_audio_stream(options);\r
 307                                 \r
 308                 dump_format(oc_.get(), 0, filename_.c_str(), 1);\r
 309                  \r
 310                 // Open the output ffmpeg, if needed.\r
 311                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 312                         THROW_ON_ERROR2(avio_open(&oc_->pb, filename_.c_str(), URL_WRONLY), "[ffmpeg_consumer]");\r
 313                                 \r
 314                 THROW_ON_ERROR2(av_write_header(oc_.get()), "[ffmpeg_consumer]");\r
 315 \r
 316                 if(options.size() > 0)\r
 317                 {\r
 318                         BOOST_FOREACH(auto& option, options)\r
 319                                 CASPAR_LOG(warning) << L"Invalid option: -" << u16(option.name) << L" " << u16(option.value);\r
 320                 }\r
 321 \r
 322                 CASPAR_LOG(info) << print() << L" Successfully Initialized.";   \r
 323         }\r
 324 \r
 325         ~ffmpeg_consumer()\r
 326         {    \r
 327                 encode_executor_.wait();\r
 328                 write_executor_.wait();\r
 329                 \r
 330                 LOG_ON_ERROR2(av_write_trailer(oc_.get()), "[ffmpeg_consumer]");\r
 331                 \r
 332                 audio_st_.reset();\r
 333                 video_st_.reset();\r
 334                           \r
 335                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 336                         LOG_ON_ERROR2(avio_close(oc_->pb), "[ffmpeg_consumer]"); // Close the output ffmpeg.\r
 337 \r
 338                 CASPAR_LOG(info) << print() << L" Successfully Uninitialized."; \r
 339         }\r
 340                         \r
 341         std::wstring print() const\r
 342         {\r
 343                 return L"ffmpeg[" + u16(filename_) + L"]";\r
 344         }\r
 345 \r
 346         std::shared_ptr<AVStream> add_video_stream(std::vector<option>& options)\r
 347         { \r
 348                 if(output_format_.vcodec == CODEC_ID_NONE)\r
 349                         return nullptr;\r
 350 \r
 351                 auto st = av_new_stream(oc_.get(), 0);\r
 352                 if (!st)                \r
 353                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate video-stream.") << boost::errinfo_api_function("av_new_stream"));              \r
 354 \r
 355                 auto encoder = avcodec_find_encoder(output_format_.vcodec);\r
 356                 if (!encoder)\r
 357                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Codec not found."));\r
 358 \r
 359                 auto c = st->codec;\r
 360 \r
 361                 avcodec_get_context_defaults3(c, encoder);\r
 362                                 \r
 363                 c->codec_id                     = output_format_.vcodec;\r
 364                 c->codec_type           = AVMEDIA_TYPE_VIDEO;\r
 365                 c->width                        = output_format_.width;\r
 366                 c->height                       = output_format_.height;\r
 367                 c->time_base.den        = format_desc_.time_scale;\r
 368                 c->time_base.num        = format_desc_.duration;\r
 369                 c->gop_size                     = 25;\r
 370                 c->flags                   |= format_desc_.field_mode == core::field_mode::progressive ? 0 : (CODEC_FLAG_INTERLACED_ME | CODEC_FLAG_INTERLACED_DCT);\r
 371                 if(c->pix_fmt == PIX_FMT_NONE)\r
 372                         c->pix_fmt = PIX_FMT_YUV420P;\r
 373 \r
 374                 if(c->codec_id == CODEC_ID_PRORES)\r
 375                 {                       \r
 376                         c->bit_rate     = c->width < 1280 ? 63*1000000 : 220*1000000;\r
 377                         c->pix_fmt      = PIX_FMT_YUV422P10;\r
 378                 }\r
 379                 else if(c->codec_id == CODEC_ID_DNXHD)\r
 380                 {\r
 381                         if(c->width < 1280 || c->height < 720)\r
 382                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Unsupported video dimensions."));\r
 383 \r
 384                         c->bit_rate     = 220*1000000;\r
 385                         c->pix_fmt      = PIX_FMT_YUV422P;\r
 386                 }\r
 387                 else if(c->codec_id == CODEC_ID_DVVIDEO)\r
 388                 {\r
 389                         c->width = c->height == 1280 ? 960  : c->width;\r
 390                         \r
 391                         if(format_desc_.format == core::video_format::ntsc)\r
 392                                 c->pix_fmt = PIX_FMT_YUV411P;\r
 393                         else if(format_desc_.format == core::video_format::pal)\r
 394                                 c->pix_fmt = PIX_FMT_YUV420P;\r
 395                         else // dv50\r
 396                                 c->pix_fmt = PIX_FMT_YUV422P;\r
 397                         \r
 398                         if(format_desc_.duration == 1001)                       \r
 399                                 c->width = c->height == 1080 ? 1280 : c->width;                 \r
 400                         else\r
 401                                 c->width = c->height == 1080 ? 1440 : c->width;                 \r
 402                 }\r
 403                 else if(c->codec_id == CODEC_ID_H264)\r
 404                 {                          \r
 405                         c->pix_fmt = PIX_FMT_YUV420P;    \r
 406                         if(options.empty())\r
 407                         {\r
 408                                 av_opt_set(c->priv_data, "preset", "ultrafast", 0);\r
 409                                 av_opt_set(c->priv_data, "tune",   "fastdecode",   0);\r
 410                                 av_opt_set(c->priv_data, "crf",    "5",     0);\r
 411                         }\r
 412                 }\r
 413                 else if(c->codec_id == CODEC_ID_QTRLE)\r
 414                 {\r
 415                         c->pix_fmt = PIX_FMT_ARGB;\r
 416                 }\r
 417                                 \r
 418                 c->max_b_frames = 0; // b-frames not supported.\r
 419                                 \r
 420                 boost::range::remove_erase_if(options, [&](const option& o)\r
 421                 {\r
 422                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;\r
 423                 });\r
 424                                 \r
 425                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)\r
 426                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 427                 \r
 428                 c->thread_count = boost::thread::hardware_concurrency();\r
 429                 if(avcodec_open(c, encoder) < 0)\r
 430                 {\r
 431                         c->thread_count = 1;\r
 432                         THROW_ON_ERROR2(avcodec_open(c, encoder), "[ffmpeg_consumer]");\r
 433                 }\r
 434 \r
 435                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 436                 {\r
 437                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");\r
 438                         av_freep(&st->codec);\r
 439                         av_freep(&st);\r
 440                 });\r
 441         }\r
 442                 \r
 443         std::shared_ptr<AVStream> add_audio_stream(std::vector<option>& options)\r
 444         {\r
 445                 if(output_format_.acodec == CODEC_ID_NONE)\r
 446                         return nullptr;\r
 447 \r
 448                 auto st = av_new_stream(oc_.get(), 1);\r
 449                 if(!st)\r
 450                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not allocate audio-stream") << boost::errinfo_api_function("av_new_stream"));               \r
 451                 \r
 452                 auto encoder = avcodec_find_encoder(output_format_.acodec);\r
 453                 if (!encoder)\r
 454                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));\r
 455                 \r
 456                 auto c = st->codec;\r
 457 \r
 458                 avcodec_get_context_defaults3(c, encoder);\r
 459 \r
 460                 c->codec_id                     = output_format_.acodec;\r
 461                 c->codec_type           = AVMEDIA_TYPE_AUDIO;\r
 462                 c->sample_rate          = 48000;\r
 463                 c->channels                     = 2;\r
 464                 c->sample_fmt           = SAMPLE_FMT_S16;\r
 465 \r
 466                 if(output_format_.vcodec == CODEC_ID_FLV1)              \r
 467                         c->sample_rate  = 44100;                \r
 468 \r
 469                 if(output_format_.format->flags & AVFMT_GLOBALHEADER)\r
 470                         c->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 471                                 \r
 472                 boost::range::remove_erase_if(options, [&](const option& o)\r
 473                 {\r
 474                         return ffmpeg::av_opt_set(c, o.name.c_str(), o.value.c_str(), AV_OPT_SEARCH_CHILDREN) > -1;\r
 475                 });\r
 476 \r
 477                 THROW_ON_ERROR2(avcodec_open(c, encoder), "[ffmpeg_consumer]");\r
 478 \r
 479                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 480                 {\r
 481                         LOG_ON_ERROR2(avcodec_close(st->codec), "[ffmpeg_consumer]");;\r
 482                         av_freep(&st->codec);\r
 483                         av_freep(&st);\r
 484                 });\r
 485         }\r
 486         \r
 487         std::shared_ptr<AVFrame> convert_video(core::const_frame frame, AVCodecContext* c)\r
 488         {\r
 489                 if(!sws_) \r
 490                 {\r
 491                         sws_.reset(sws_getContext(format_desc_.width  - output_format_.cropleft - output_format_.cropright, \r
 492                                                                           format_desc_.height - output_format_.croptop  - output_format_.cropbot, \r
 493                                                                           PIX_FMT_BGRA,\r
 494                                                                           c->width,\r
 495                                                                           c->height, \r
 496                                                                           c->pix_fmt, \r
 497                                                                           SWS_BICUBIC, nullptr, nullptr, nullptr), \r
 498                                                 sws_freeContext);\r
 499                         if (sws_ == nullptr) \r
 500                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Cannot initialize the conversion context"));\r
 501                 }\r
 502 \r
 503                 std::shared_ptr<AVFrame> in_frame(avcodec_alloc_frame(), av_free);\r
 504 \r
 505                 avpicture_fill(reinterpret_cast<AVPicture*>(in_frame.get()), \r
 506                                            const_cast<uint8_t*>(frame.image_data().begin()),\r
 507                                            PIX_FMT_BGRA, \r
 508                                            format_desc_.width,\r
 509                                            format_desc_.height);\r
 510 \r
 511                 for(int n = 0; n < 4; ++n)\r
 512                 {\r
 513                         in_frame->data[n]         = in_frame->data[n] + output_format_.cropleft;\r
 514                         in_frame->linesize[n] = in_frame->linesize[n] - output_format_.cropleft - output_format_.cropright;\r
 515                 }\r
 516                                                 \r
 517                 std::shared_ptr<AVFrame> out_frame(avcodec_alloc_frame(), av_free);\r
 518 \r
 519                 picture_buf_.resize(avpicture_get_size(c->pix_fmt, \r
 520                                                                                            c->width,\r
 521                                                                                            c->height));\r
 522 \r
 523                 avpicture_fill(reinterpret_cast<AVPicture*>(out_frame.get()),\r
 524                                            picture_buf_.data(), \r
 525                                            c->pix_fmt, \r
 526                                            c->width, \r
 527                                            c->height);\r
 528 \r
 529                 sws_scale(sws_.get(), \r
 530                                   in_frame->data, \r
 531                                   in_frame->linesize,\r
 532                                   output_format_.croptop, \r
 533                                   format_desc_.height - output_format_.croptop - output_format_.cropbot, \r
 534                                   out_frame->data, \r
 535                                   out_frame->linesize);\r
 536 \r
 537                 return out_frame;\r
 538         }\r
 539   \r
 540         std::shared_ptr<AVPacket> encode_video_frame(core::const_frame frame)\r
 541         { \r
 542                 auto c = video_st_->codec;\r
 543                 \r
 544                 auto in_time  = static_cast<double>(in_frame_number_) / format_desc_.fps;\r
 545                 auto out_time = static_cast<double>(out_frame_number_) / (static_cast<double>(c->time_base.den) / static_cast<double>(c->time_base.num));\r
 546                 \r
 547                 in_frame_number_++;\r
 548 \r
 549                 if(out_time - in_time > 0.01)\r
 550                         return nullptr;\r
 551  \r
 552                 auto av_frame = convert_video(frame, c);\r
 553                 av_frame->interlaced_frame      = format_desc_.field_mode != core::field_mode::progressive;\r
 554                 av_frame->top_field_first       = format_desc_.field_mode == core::field_mode::upper;\r
 555                 av_frame->pts                           = out_frame_number_++;\r
 556 \r
 557                 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
 558                 if(out_size > 0)\r
 559                 {\r
 560                         spl::shared_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 561                         {\r
 562                                 av_free_packet(p);\r
 563                                 delete p;\r
 564                         });\r
 565                         av_init_packet(pkt.get());\r
 566  \r
 567                         if (c->coded_frame->pts != AV_NOPTS_VALUE)\r
 568                                 pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, video_st_->time_base);\r
 569 \r
 570                         if(c->coded_frame->key_frame)\r
 571                                 pkt->flags |= AV_PKT_FLAG_KEY;\r
 572 \r
 573                         pkt->stream_index       = video_st_->index;\r
 574                         pkt->data                       = video_outbuf_.data();\r
 575                         pkt->size                       = out_size;\r
 576  \r
 577                         av_dup_packet(pkt.get());\r
 578                         return pkt;\r
 579                 }       \r
 580                 return nullptr;\r
 581         }\r
 582                 \r
 583         byte_vector convert_audio(core::const_frame& frame, AVCodecContext* c)\r
 584         {\r
 585                 if(!swr_)               \r
 586                         swr_.reset(new audio_resampler(c->channels, format_desc_.audio_channels, \r
 587                                                                                    c->sample_rate, format_desc_.audio_sample_rate,\r
 588                                                                                    c->sample_fmt, AV_SAMPLE_FMT_S32));\r
 589                 \r
 590 \r
 591                 auto audio_data = frame.audio_data();\r
 592 \r
 593                 std::vector<int8_t,  tbb::cache_aligned_allocator<int8_t>> audio_resample_buffer;\r
 594                 std::copy(reinterpret_cast<const uint8_t*>(audio_data.data()), \r
 595                                   reinterpret_cast<const uint8_t*>(audio_data.data()) + audio_data.size()*4, \r
 596                                   std::back_inserter(audio_resample_buffer));\r
 597                 \r
 598                 audio_resample_buffer = swr_->resample(std::move(audio_resample_buffer));\r
 599                 \r
 600                 return byte_vector(audio_resample_buffer.begin(), audio_resample_buffer.end());\r
 601         }\r
 602         \r
 603         std::shared_ptr<AVPacket> encode_audio_frame(core::const_frame frame)\r
 604         {                       \r
 605                 auto c = audio_st_->codec;\r
 606 \r
 607                 boost::range::push_back(audio_buf_, convert_audio(frame, c));\r
 608                 \r
 609                 std::size_t frame_size = c->frame_size;\r
 610                 \r
 611                 spl::shared_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)\r
 612                 {\r
 613                         av_free_packet(p);\r
 614                         delete p;\r
 615                 });\r
 616                 av_init_packet(pkt.get());\r
 617 \r
 618                 if(frame_size > 1)\r
 619                 {                       \r
 620                         auto input_audio_size = frame_size * av_get_bytes_per_sample(c->sample_fmt) * c->channels;\r
 621                    \r
 622                         if(audio_buf_.size() < input_audio_size)\r
 623                                 return nullptr;\r
 624                                         \r
 625                         pkt->size = avcodec_encode_audio(c, audio_outbuf_.data(), static_cast<int>(audio_outbuf_.size()), reinterpret_cast<short*>(audio_buf_.data()));\r
 626                         audio_buf_.erase(audio_buf_.begin(), audio_buf_.begin() + input_audio_size);\r
 627                 }\r
 628                 else\r
 629                 {\r
 630                         audio_outbuf_ = std::move(audio_buf_);          \r
 631                         audio_buf_.clear();\r
 632                         pkt->size = static_cast<int>(audio_outbuf_.size());\r
 633                         pkt->data = audio_outbuf_.data();\r
 634                 }\r
 635                 \r
 636                 if(pkt->size == 0)\r
 637                         return nullptr;\r
 638 \r
 639                 if (c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE)\r
 640                         pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, audio_st_->time_base);\r
 641 \r
 642                 pkt->flags               |= AV_PKT_FLAG_KEY;\r
 643                 pkt->stream_index = audio_st_->index;\r
 644                 pkt->data                 = reinterpret_cast<uint8_t*>(audio_outbuf_.data());\r
 645                 \r
 646                 av_dup_packet(pkt.get());\r
 647                 return pkt;\r
 648         }\r
 649                  \r
 650         void send(core::const_frame& frame)\r
 651         {\r
 652                 encode_executor_.begin_invoke([=]\r
 653                 {               \r
 654                         boost::timer frame_timer;\r
 655 \r
 656                         auto video = encode_video_frame(frame);\r
 657                         auto audio = encode_audio_frame(frame);\r
 658 \r
 659                         graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);\r
 660                         \r
 661                         write_executor_.begin_invoke([=]\r
 662                         {\r
 663                                 if(video)\r
 664                                         av_interleaved_write_frame(oc_.get(), video.get());\r
 665                                 if(audio)\r
 666                                         av_interleaved_write_frame(oc_.get(), audio.get());\r
 667                         });\r
 668                 });\r
 669         }\r
 670 };\r
 671 \r
 672 struct ffmpeg_consumer_proxy : public core::frame_consumer\r
 673 {\r
 674         const std::wstring                              filename_;\r
 675         const std::vector<option>               options_;\r
 676 \r
 677         std::unique_ptr<ffmpeg_consumer> consumer_;\r
 678 \r
 679 public:\r
 680 \r
 681         ffmpeg_consumer_proxy(const std::wstring& filename, const std::vector<option>& options)\r
 682                 : filename_(filename)\r
 683                 , options_(options)\r
 684         {\r
 685         }\r
 686         \r
 687         virtual void initialize(const core::video_format_desc& format_desc, int)\r
 688         {\r
 689                 consumer_.reset();\r
 690                 consumer_.reset(new ffmpeg_consumer(u8(filename_), format_desc, options_));\r
 691         }\r
 692         \r
 693         virtual bool send(core::const_frame frame) override\r
 694         {\r
 695                 consumer_->send(frame);\r
 696                 return true;\r
 697         }\r
 698         \r
 699         virtual std::wstring print() const override\r
 700         {\r
 701                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";\r
 702         }\r
 703 \r
 704         virtual std::wstring name() const override\r
 705         {\r
 706                 return L"file";\r
 707         }\r
 708 \r
 709         virtual boost::property_tree::wptree info() const override\r
 710         {\r
 711                 boost::property_tree::wptree info;\r
 712                 info.add(L"type", L"file");\r
 713                 info.add(L"filename", filename_);\r
 714                 return info;\r
 715         }\r
 716                 \r
 717         virtual bool has_synchronization_clock() const override\r
 718         {\r
 719                 return false;\r
 720         }\r
 721 \r
 722         virtual int buffer_depth() const override\r
 723         {\r
 724                 return 1;\r
 725         }\r
 726 \r
 727         virtual int index() const override\r
 728         {\r
 729                 return 200;\r
 730         }\r
 731 };      \r
 732 spl::shared_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)\r
 733 {\r
 734         if(params.size() < 1 || params[0] != L"FILE")\r
 735                 return core::frame_consumer::empty();\r
 736         \r
 737         auto filename   = (params.size() > 1 ? params[1] : L"");\r
 738                         \r
 739         std::vector<option> options;\r
 740         \r
 741         if(params.size() >= 3)\r
 742         {\r
 743                 for(auto opt_it = params.begin()+2; opt_it != params.end();)\r
 744                 {\r
 745                         auto name  = u8(boost::trim_copy(boost::to_lower_copy(*opt_it++))).substr(1);\r
 746                         auto value = u8(boost::trim_copy(boost::to_lower_copy(*opt_it++)));\r
 747                                 \r
 748                         if(value == "h264")\r
 749                                 value = "libx264";\r
 750                         else if(value == "dvcpro")\r
 751                                 value = "dvvideo";\r
 752 \r
 753                         options.push_back(option(name, value));\r
 754                 }\r
 755         }\r
 756                 \r
 757         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + filename, options);\r
 758 }\r
 759 \r
 760 spl::shared_ptr<core::frame_consumer> create_consumer(const boost::property_tree::wptree& ptree)\r
 761 {\r
 762         auto filename   = ptree.get<std::wstring>(L"path");\r
 763         auto codec              = ptree.get(L"vcodec", L"libx264");\r
 764 \r
 765         std::vector<option> options;\r
 766         options.push_back(option("vcodec", u8(codec)));\r
 767         \r
 768         return spl::make_shared<ffmpeg_consumer_proxy>(env::media_folder() + filename, options);\r
 769 }\r
 770 \r
 771 }}\r