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

   1 /*\r
   2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 *  This ffmpeg is part of CasparCG.\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 */\r
  20  \r
  21 #include "../StdAfx.h"\r
  22 \r
  23 #include "../ffmpeg_error.h"\r
  24 #include "../producer/tbb_avcodec.h"\r
  25 \r
  26 #include "ffmpeg_consumer.h"\r
  27 \r
  28 #include <core/mixer/read_frame.h>\r
  29 #include <core/mixer/audio/audio_util.h>\r
  30 #include <core/consumer/frame_consumer.h>\r
  31 #include <core/video_format.h>\r
  32 \r
  33 #include <common/concurrency/executor.h>\r
  34 #include <common/utility/string.h>\r
  35 #include <common/env.h>\r
  36 \r
  37 #include <boost/thread/once.hpp>\r
  38 #include <boost/algorithm/string.hpp>\r
  39 \r
  40 #include <tbb/cache_aligned_allocator.h>\r
  41 #include <tbb/parallel_invoke.h>\r
  42 \r
  43 #include <cstdio>\r
  44 \r
  45 #if defined(_MSC_VER)\r
  46 #pragma warning (push)\r
  47 #pragma warning (disable : 4244)\r
  48 #endif\r
  49 extern "C" \r
  50 {\r
  51         #define __STDC_CONSTANT_MACROS\r
  52         #define __STDC_LIMIT_MACROS\r
  53         #include <libavformat/avformat.h>\r
  54         #include <libswscale/swscale.h>\r
  55 }\r
  56 #if defined(_MSC_VER)\r
  57 #pragma warning (pop)\r
  58 #endif\r
  59 \r
  60 namespace caspar { namespace ffmpeg {\r
  61         \r
  62 struct ffmpeg_consumer : boost::noncopyable\r
  63 {               \r
  64         const std::string                                               filename_;\r
  65                 \r
  66         const std::shared_ptr<AVFormatContext>  oc_;\r
  67         const core::video_format_desc                   format_desc_;\r
  68         \r
  69         executor                                                                executor_;\r
  70 \r
  71         // Audio\r
  72         std::shared_ptr<AVStream>                               audio_st_;\r
  73         std::vector<uint8_t>                                    audio_outbuf_;\r
  74 \r
  75         std::vector<int16_t>                                    audio_input_buffer_;\r
  76 \r
  77         // Video\r
  78         std::shared_ptr<AVStream>                               video_st_;\r
  79         std::vector<uint8_t>                                    video_outbuf_;\r
  80 \r
  81         std::vector<uint8_t>                                    picture_buf_;\r
  82         std::shared_ptr<SwsContext>                             img_convert_ctx_;\r
  83         \r
  84 public:\r
  85         ffmpeg_consumer(const std::string& filename, const core::video_format_desc& format_desc, const std::string& codec, int bitrate)\r
  86                 : filename_(filename + ".mov")\r
  87                 , video_outbuf_(1920*1080*8)\r
  88                 , audio_outbuf_(48000)\r
  89                 , oc_(avformat_alloc_context(), av_free)\r
  90                 , format_desc_(format_desc)\r
  91                 , executor_(print())\r
  92         {\r
  93                 executor_.set_capacity(25);\r
  94                 \r
  95                 oc_->oformat = av_guess_format(nullptr, filename_.c_str(), nullptr);\r
  96                 if (!oc_->oformat)\r
  97                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not find suitable output format."));\r
  98                 \r
  99                 THROW_ON_ERROR2(av_set_parameters(oc_.get(), nullptr), "[ffmpeg_consumer]");\r
 100 \r
 101                 strcpy_s(oc_->filename, filename_.c_str());\r
 102                 \r
 103                 auto video_codec = avcodec_find_encoder_by_name(codec.c_str());\r
 104                 if(video_codec == nullptr)\r
 105                         BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info(codec));\r
 106 \r
 107                 //  Add the audio and video streams using the default format codecs     and initialize the codecs .\r
 108                 video_st_ = add_video_stream(video_codec->id, bitrate);\r
 109                 audio_st_ = add_audio_stream();\r
 110                                 \r
 111                 dump_format(oc_.get(), 0, filename_.c_str(), 1);\r
 112                  \r
 113                 // Open the output ffmpeg, if needed.\r
 114                 if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 115                         THROW_ON_ERROR2(avio_open(&oc_->pb, filename_.c_str(), URL_WRONLY), "[ffmpeg_consumer]");\r
 116                                 \r
 117                 THROW_ON_ERROR2(av_write_header(oc_.get()), "[ffmpeg_consumer]");\r
 118 \r
 119                 CASPAR_LOG(info) << print() << L" Successfully Initialized.";   \r
 120         }\r
 121 \r
 122         ~ffmpeg_consumer()\r
 123         {    \r
 124                 executor_.stop();\r
 125                 executor_.join();\r
 126                 \r
 127                 try\r
 128                 {\r
 129                         THROW_ON_ERROR2(av_write_trailer(oc_.get()), "[ffmpeg_consumer]");\r
 130                 \r
 131                         audio_st_.reset();\r
 132                         video_st_.reset();\r
 133                           \r
 134                         for(size_t i = 0; i < oc_->nb_streams; i++) \r
 135                         {\r
 136                                 av_freep(&oc_->streams[i]->codec);\r
 137                                 av_freep(&oc_->streams[i]);\r
 138                         }\r
 139 \r
 140                         if (!(oc_->oformat->flags & AVFMT_NOFILE)) \r
 141                                 THROW_ON_ERROR2(avio_close(oc_->pb), "[ffmpeg_consumer]"); // Close the output ffmpeg.\r
 142 \r
 143                         CASPAR_LOG(info) << print() << L" Successfully Uninitialized."; \r
 144                 }\r
 145                 catch(...)\r
 146                 {\r
 147                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 148                 }\r
 149 \r
 150         }\r
 151                         \r
 152         std::wstring print() const\r
 153         {\r
 154                 return L"ffmpeg[" + widen(filename_) + L"]";\r
 155         }\r
 156 \r
 157         std::shared_ptr<AVStream> add_video_stream(enum CodecID codec_id, int bitrate)\r
 158         { \r
 159                 auto st = av_new_stream(oc_.get(), 0);\r
 160                 if (!st) \r
 161                 {\r
 162                         BOOST_THROW_EXCEPTION(caspar_exception() \r
 163                                 << msg_info("Could not alloc video-stream")                             \r
 164                                 << boost::errinfo_api_function("av_new_stream"));\r
 165                 }\r
 166                 \r
 167                 st->codec->codec_id                     = codec_id;\r
 168                 st->codec->codec_type           = AVMEDIA_TYPE_VIDEO;\r
 169                 st->codec->width                        = format_desc_.width;\r
 170                 st->codec->height                       = format_desc_.height;\r
 171                 st->codec->time_base.den        = format_desc_.time_scale;\r
 172                 st->codec->time_base.num        = format_desc_.duration;\r
 173 \r
 174                 if(st->codec->codec_id == CODEC_ID_PRORES)\r
 175                 {                       \r
 176                         st->codec->bit_rate     = bitrate > 0 ? bitrate : format_desc_.width < 1280 ? 42*1000000 : 147*1000000;\r
 177                         st->codec->pix_fmt      = PIX_FMT_YUV422P10;\r
 178                 }\r
 179                 else if(st->codec->codec_id == CODEC_ID_DNXHD)\r
 180                 {\r
 181                         st->codec->bit_rate     = bitrate > 0 ? bitrate : 145*1000000;\r
 182                         st->codec->width        = std::min<size_t>(1280, format_desc_.width);\r
 183                         st->codec->height       = std::min<size_t>(720, format_desc_.height);\r
 184                         st->codec->pix_fmt      = PIX_FMT_YUV422P;\r
 185                 }\r
 186                 else\r
 187                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("unsupported codec"));\r
 188                 \r
 189                 if(oc_->oformat->flags & AVFMT_GLOBALHEADER)\r
 190                         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 191 \r
 192                 auto codec = avcodec_find_encoder(st->codec->codec_id);\r
 193                 if (!codec)\r
 194                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));\r
 195 \r
 196                 THROW_ON_ERROR2(tbb_avcodec_open(st->codec, codec), "[ffmpeg_consumer]");\r
 197 \r
 198                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 199                 {\r
 200                         tbb_avcodec_close(st->codec);\r
 201                 });\r
 202         }\r
 203         \r
 204         std::shared_ptr<AVStream> add_audio_stream()\r
 205         {\r
 206                 auto st = av_new_stream(oc_.get(), 1);\r
 207                 if (!st) \r
 208                 {\r
 209                         BOOST_THROW_EXCEPTION(caspar_exception() \r
 210                                 << msg_info("Could not alloc audio-stream")                             \r
 211                                 << boost::errinfo_api_function("av_new_stream"));\r
 212                 }\r
 213 \r
 214                 st->codec->codec_id             = CODEC_ID_PCM_S16LE;\r
 215                 st->codec->codec_type   = AVMEDIA_TYPE_AUDIO;\r
 216                 st->codec->sample_rate  = 48000;\r
 217                 st->codec->channels             = 2;\r
 218                 st->codec->sample_fmt   = SAMPLE_FMT_S16;\r
 219                 \r
 220                 if(oc_->oformat->flags & AVFMT_GLOBALHEADER)\r
 221                         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;\r
 222                 \r
 223                 auto codec = avcodec_find_encoder(st->codec->codec_id);\r
 224                 if (!codec)\r
 225                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));\r
 226 \r
 227                 THROW_ON_ERROR2(avcodec_open(st->codec, codec), "[ffmpeg_consumer]");\r
 228 \r
 229                 return std::shared_ptr<AVStream>(st, [](AVStream* st)\r
 230                 {\r
 231                         avcodec_close(st->codec);\r
 232                 });\r
 233         }\r
 234   \r
 235         void encode_video_frame(const safe_ptr<core::read_frame>& frame)\r
 236         { \r
 237                 auto c = video_st_->codec;\r
 238  \r
 239                 if(!img_convert_ctx_) \r
 240                 {\r
 241                         img_convert_ctx_.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
 242                         if (img_convert_ctx_ == nullptr) \r
 243                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Cannot initialize the conversion context"));\r
 244                 }\r
 245 \r
 246                 std::shared_ptr<AVFrame> av_frame(avcodec_alloc_frame(), av_free);\r
 247                 avpicture_fill(reinterpret_cast<AVPicture*>(av_frame.get()), const_cast<uint8_t*>(frame->image_data().begin()), PIX_FMT_BGRA, format_desc_.width, format_desc_.height);\r
 248                                 \r
 249                 std::shared_ptr<AVFrame> local_av_frame(avcodec_alloc_frame(), av_free);\r
 250                 local_av_frame->interlaced_frame = format_desc_.field_mode != core::field_mode::progressive;\r
 251                 local_av_frame->top_field_first  = format_desc_.field_mode == core::field_mode::upper;\r
 252 \r
 253                 picture_buf_.resize(avpicture_get_size(c->pix_fmt, format_desc_.width, format_desc_.height));\r
 254                 avpicture_fill(reinterpret_cast<AVPicture*>(local_av_frame.get()), picture_buf_.data(), c->pix_fmt, format_desc_.width, format_desc_.height);\r
 255 \r
 256                 sws_scale(img_convert_ctx_.get(), av_frame->data, av_frame->linesize, 0, c->height, local_av_frame->data, local_av_frame->linesize);\r
 257                                 \r
 258                 int out_size = THROW_ON_ERROR2(avcodec_encode_video(c, video_outbuf_.data(), video_outbuf_.size(), local_av_frame.get()), "[ffmpeg_consumer]");\r
 259                 if(out_size > 0)\r
 260                 {\r
 261                         AVPacket pkt;\r
 262                         av_init_packet(&pkt);\r
 263  \r
 264                         if (c->coded_frame->pts != AV_NOPTS_VALUE)\r
 265                                 pkt.pts= av_rescale_q(c->coded_frame->pts, c->time_base, video_st_->time_base);\r
 266 \r
 267                         if(c->coded_frame->key_frame)\r
 268                                 pkt.flags |= AV_PKT_FLAG_KEY;\r
 269 \r
 270                         pkt.stream_index        = video_st_->index;\r
 271                         pkt.data                        = video_outbuf_.data();\r
 272                         pkt.size                        = out_size;\r
 273  \r
 274                         THROW_ON_ERROR2(av_interleaved_write_frame(oc_.get(), &pkt), L"[ffmpeg_consumer]");\r
 275                 }       \r
 276         }\r
 277                 \r
 278         void encode_audio_frame(const safe_ptr<core::read_frame>& frame)\r
 279         {                       \r
 280                 auto c = audio_st_->codec;\r
 281 \r
 282                 auto audio_data = core::audio_32_to_16(frame->audio_data());\r
 283 \r
 284                 AVPacket pkt;\r
 285                 av_init_packet(&pkt);\r
 286                 \r
 287                 if (c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE)\r
 288                         pkt.pts = av_rescale_q(c->coded_frame->pts, c->time_base, audio_st_->time_base);\r
 289 \r
 290                 pkt.flags                |= AV_PKT_FLAG_KEY;\r
 291                 pkt.stream_index = audio_st_->index;\r
 292                 pkt.size                 = audio_data.size()*2;\r
 293                 pkt.data                 = reinterpret_cast<uint8_t*>(audio_data.data());\r
 294                 \r
 295                 THROW_ON_ERROR2(av_interleaved_write_frame(oc_.get(), &pkt), L"[ffmpeg_consumer]");\r
 296         }\r
 297                  \r
 298         void send(const safe_ptr<core::read_frame>& frame)\r
 299         {\r
 300                 executor_.begin_invoke([=]\r
 301                 {                               \r
 302                         encode_video_frame(frame);\r
 303                         encode_audio_frame(frame);\r
 304                 });\r
 305         }\r
 306 };\r
 307 \r
 308 struct ffmpeg_consumer_proxy : public core::frame_consumer\r
 309 {\r
 310         const std::wstring      filename_;\r
 311         const bool                      key_only_;\r
 312         const std::string       codec_;\r
 313         const int                       bitrate_;\r
 314 \r
 315         std::unique_ptr<ffmpeg_consumer> consumer_;\r
 316 \r
 317 public:\r
 318 \r
 319         ffmpeg_consumer_proxy(const std::wstring& filename, bool key_only, const std::string codec, int bitrate)\r
 320                 : filename_(filename)\r
 321                 , key_only_(key_only)\r
 322                 , codec_(boost::to_lower_copy(codec))\r
 323                 , bitrate_(bitrate)\r
 324         {\r
 325         }\r
 326         \r
 327         virtual void initialize(const core::video_format_desc& format_desc, int, int)\r
 328         {\r
 329                 consumer_.reset();\r
 330                 consumer_.reset(new ffmpeg_consumer(narrow(filename_), format_desc, codec_, bitrate_));\r
 331         }\r
 332         \r
 333         virtual bool send(const safe_ptr<core::read_frame>& frame) override\r
 334         {\r
 335                 consumer_->send(frame);\r
 336                 return true;\r
 337         }\r
 338         \r
 339         virtual std::wstring print() const override\r
 340         {\r
 341                 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";\r
 342         }\r
 343                 \r
 344         virtual bool has_synchronization_clock() const override\r
 345         {\r
 346                 return false;\r
 347         }\r
 348 \r
 349         virtual size_t buffer_depth() const override\r
 350         {\r
 351                 return 1;\r
 352         }\r
 353 };      \r
 354 \r
 355 safe_ptr<core::frame_consumer> create_ffmpeg_consumer(const std::vector<std::wstring>& params)\r
 356 {\r
 357         if(params.size() < 2 || params[0] != L"FILE")\r
 358                 return core::frame_consumer::empty();\r
 359         \r
 360         // TODO: Ask stakeholders about case where file already exists.\r
 361         boost::filesystem::remove(boost::filesystem::wpath(env::media_folder() + params[1])); // Delete the file if it exists\r
 362         bool key_only = std::find(params.begin(), params.end(), L"KEY_ONLY") != params.end();\r
 363 \r
 364         std::string codec = "dnxhd";\r
 365         auto codec_it = std::find(params.begin(), params.end(), L"CODEC");\r
 366         if(codec_it++ != params.end())\r
 367                 codec = narrow(*codec_it);\r
 368 \r
 369         int bitrate = 0;        \r
 370         auto bitrate_it = std::find(params.begin(), params.end(), L"BITRATE");\r
 371         if(bitrate_it++ != params.end())\r
 372                 bitrate = boost::lexical_cast<int>(*codec_it);\r
 373 \r
 374         return make_safe<ffmpeg_consumer_proxy>(env::media_folder() + params[1], key_only, codec, bitrate);\r
 375 }\r
 376 \r
 377 safe_ptr<core::frame_consumer> create_ffmpeg_consumer(const boost::property_tree::ptree& ptree)\r
 378 {\r
 379         std::string filename = ptree.get<std::string>("path");\r
 380         auto key_only            = ptree.get("key-only", false);\r
 381         auto codec                       = ptree.get("codec", "dnxhd");\r
 382         auto bitrate             = ptree.get("bitrate", 0);\r
 383         \r
 384         return make_safe<ffmpeg_consumer_proxy>(env::media_folder() + widen(filename), key_only, codec, bitrate);\r
 385 }\r
 386 \r
 387 }}\r