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