git.sesse.net Git - casparcg/blob - modules/ffmpeg/producer/muxer/frame_muxer.cpp

   1 #include "../../StdAfx.h"\r
   2 \r
   3 #include "frame_muxer.h"\r
   4 \r
   5 #include "display_mode.h"\r
   6 \r
   7 #include "../filter/filter.h"\r
   8 #include "../util/util.h"\r
   9 \r
  10 #include <core/producer/frame_producer.h>\r
  11 #include <core/producer/frame/basic_frame.h>\r
  12 #include <core/producer/frame/frame_factory.h>\r
  13 #include <core/mixer/write_frame.h>\r
  14 \r
  15 #include <common/concurrency/governor.h>\r
  16 #include <common/env.h>\r
  17 #include <common/exception/exceptions.h>\r
  18 #include <common/log/log.h>\r
  19 \r
  20 #include <boost/range/algorithm_ext/push_back.hpp>\r
  21 \r
  22 #if defined(_MSC_VER)\r
  23 #pragma warning (push)\r
  24 #pragma warning (disable : 4244)\r
  25 #endif\r
  26 extern "C" \r
  27 {\r
  28         #define __STDC_CONSTANT_MACROS\r
  29         #define __STDC_LIMIT_MACROS\r
  30         #include <libavcodec/avcodec.h>\r
  31         #include <libavformat/avformat.h>\r
  32 }\r
  33 #if defined(_MSC_VER)\r
  34 #pragma warning (pop)\r
  35 #endif\r
  36 \r
  37 #include <agents.h>\r
  38 \r
  39 using namespace Concurrency;\r
  40 \r
  41 namespace caspar { namespace ffmpeg {\r
  42         \r
  43 struct frame_muxer2::implementation : public Concurrency::agent, boost::noncopyable\r
  44 {               \r
  45         frame_muxer2::video_source_t* video_source_;\r
  46         frame_muxer2::audio_source_t* audio_source_;\r
  47 \r
  48         ITarget<frame_muxer2::target_element_t>&                        target_;\r
  49         mutable single_assignment<display_mode::type>           display_mode_;\r
  50         const double                                                                            in_fps_;\r
  51         const core::video_format_desc                                           format_desc_;\r
  52         const bool                                                                                      auto_transcode_;\r
  53         \r
  54         mutable single_assignment<safe_ptr<filter>>                     filter_;\r
  55         const safe_ptr<core::frame_factory>                                     frame_factory_;\r
  56                         \r
  57         core::audio_buffer                                                                      audio_data_;\r
  58         \r
  59         std::wstring                                                                            filter_str_;\r
  60 \r
  61         governor                                                                                        governor_;\r
  62         \r
  63         implementation(frame_muxer2::video_source_t* video_source,\r
  64                                    frame_muxer2::audio_source_t* audio_source,\r
  65                                    frame_muxer2::target_t& target,\r
  66                                    double in_fps, \r
  67                                    const safe_ptr<core::frame_factory>& frame_factory,\r
  68                                    const std::wstring& filter)\r
  69                 : video_source_(video_source)\r
  70                 , audio_source_(audio_source)\r
  71                 , target_(target)\r
  72                 , in_fps_(in_fps)\r
  73                 , format_desc_(frame_factory->get_video_format_desc())\r
  74                 , auto_transcode_(env::properties().get("configuration.producers.auto-transcode", false))\r
  75                 , frame_factory_(frame_factory)\r
  76                 , governor_(2)\r
  77         {               \r
  78                 start();\r
  79         }\r
  80 \r
  81         ~implementation()\r
  82         {\r
  83                 governor_.cancel();\r
  84                 agent::wait(this);\r
  85         }\r
  86                                 \r
  87         std::shared_ptr<core::write_frame> receive_video()\r
  88         {       \r
  89                 if(!video_source_)\r
  90                         return make_safe<core::write_frame>(this);      \r
  91 \r
  92                 auto video = filter_.has_value() ? filter_.value()->poll() : nullptr;\r
  93                 if(video)               \r
  94                         return make_write_frame(this, make_safe_ptr(video), frame_factory_, 0);         \r
  95                 \r
  96                 video = receive(video_source_);\r
  97                 \r
  98                 if(video == flush_video())\r
  99                 {\r
 100                         if(filter_.has_value())\r
 101                                 filter_.value()->push(nullptr);\r
 102                         return receive_video();\r
 103                 }\r
 104 \r
 105                 if(video == eof_video())\r
 106                         return nullptr;         \r
 107 \r
 108                 if(!display_mode_.has_value())\r
 109                         initialize_display_mode(*video);\r
 110                         \r
 111                 filter_.value()->push(video);\r
 112                 video.reset();\r
 113 \r
 114                 return receive_video();\r
 115         }\r
 116         \r
 117         std::shared_ptr<core::audio_buffer> receive_audio(size_t n_samples)\r
 118         {               \r
 119                 if(!audio_source_)\r
 120                         return make_safe<core::audio_buffer>(n_samples, 0);\r
 121                                         \r
 122                 if(audio_data_.size() >= n_samples)\r
 123                 {\r
 124                         auto begin = audio_data_.begin(); \r
 125                         auto end   = begin + n_samples;\r
 126                         auto audio = make_safe<core::audio_buffer>(begin, end);\r
 127                         audio_data_.erase(begin, end);\r
 128                         return audio;\r
 129                 }\r
 130                                 \r
 131                 std::shared_ptr<core::audio_buffer> audio = receive(audio_source_);\r
 132 \r
 133                 if(audio == flush_audio())\r
 134                 {\r
 135                         if(!audio_data_.empty())\r
 136                         {\r
 137                                 CASPAR_LOG(info) << L"[frame_muxer] Truncating audio: " << audio_data_.size();\r
 138                                 audio_data_.clear();\r
 139                         }\r
 140                 }\r
 141 \r
 142                 if(audio == eof_audio())\r
 143                         return nullptr;\r
 144 \r
 145                 audio_data_.insert(audio_data_.end(), audio->begin(), audio->end());    \r
 146                 audio.reset();\r
 147                 \r
 148                 return receive_audio(n_samples);\r
 149         }\r
 150                         \r
 151         virtual void run()\r
 152         {\r
 153                 try\r
 154                 {\r
 155                         while(display())\r
 156                         {       \r
 157                         }\r
 158                                 \r
 159                 }\r
 160                 catch(...)\r
 161                 {\r
 162                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 163                 }\r
 164                 \r
 165                 send(target_, frame_muxer2::target_element_t(core::basic_frame::eof(), ticket_t()));\r
 166 \r
 167                 done();\r
 168         }\r
 169 \r
 170         bool display()\r
 171         {\r
 172                 auto ticket = governor_.acquire();\r
 173 \r
 174                 auto video = receive_video();\r
 175                 if(!video)\r
 176                         return false;\r
 177 \r
 178                 auto audio = receive_audio(format_desc_.audio_samples_per_frame);\r
 179                 if(!audio)\r
 180                         return false;\r
 181                                 \r
 182                 video->audio_data() = std::move(*audio);\r
 183 \r
 184                 switch(display_mode_.value())\r
 185                 {\r
 186                 case display_mode::simple:                      \r
 187                 case display_mode::deinterlace:\r
 188                 case display_mode::deinterlace_bob:\r
 189                         {\r
 190                                 send(target_, frame_muxer2::target_element_t(video, ticket));\r
 191                                 \r
 192                                 return true;\r
 193                         }\r
 194                 case display_mode::duplicate:                                   \r
 195                         {                       \r
 196                                 send(target_, frame_muxer2::target_element_t(video, ticket));\r
 197                                                                 \r
 198                                 auto video2 = make_safe<core::write_frame>(*video);     \r
 199                                 auto audio2 = receive_audio(format_desc_.audio_samples_per_frame);\r
 200 \r
 201                                 if(audio2)\r
 202                                 {\r
 203                                         video2->audio_data() = std::move(*audio2);\r
 204                                         send(target_, frame_muxer2::target_element_t(video2, ticket));\r
 205                                 }\r
 206 \r
 207                                 return audio2 != nullptr;\r
 208                         }\r
 209                 case display_mode::half:                                                \r
 210                         {                                                               \r
 211                                 send(target_, frame_muxer2::target_element_t(video, ticket));\r
 212                                 auto video2 = receive_video();\r
 213                                 \r
 214                                 return video2 != nullptr;\r
 215                         }\r
 216                 case display_mode::deinterlace_bob_reinterlace:\r
 217                 case display_mode::interlace:                                   \r
 218                         {                                       \r
 219                                 std::shared_ptr<core::basic_frame> video2 = receive_video();\r
 220                                 if(!video2)\r
 221                                         video2 = core::basic_frame::empty();\r
 222                                                                                                 \r
 223                                 auto frame = core::basic_frame::interlace(make_safe_ptr(video), make_safe_ptr(video2), format_desc_.field_mode);        \r
 224                                 send(target_, frame_muxer2::target_element_t(frame, ticket));\r
 225                                 \r
 226                                 return video2 != nullptr;\r
 227                         }\r
 228                 default:        \r
 229                         BOOST_THROW_EXCEPTION(invalid_operation() << msg_info("invalid display-mode"));\r
 230                 }\r
 231         }       \r
 232         \r
 233         void initialize_display_mode(AVFrame& frame)\r
 234         {\r
 235                 auto display_mode = display_mode::invalid;\r
 236 \r
 237                 if(auto_transcode_)\r
 238                 {\r
 239                         auto mode = get_mode(frame);\r
 240                         auto fps  = in_fps_;\r
 241 \r
 242                         if(is_deinterlacing(filter_str_))\r
 243                                 mode = core::field_mode::progressive;\r
 244 \r
 245                         if(is_double_rate(filter_str_))\r
 246                                 fps *= 2;\r
 247 \r
 248                         display_mode = get_display_mode(mode, fps, format_desc_.field_mode, format_desc_.fps);\r
 249                         \r
 250                         if(display_mode == display_mode::simple && mode != core::field_mode::progressive && format_desc_.field_mode != core::field_mode::progressive && frame.height != static_cast<int>(format_desc_.height))\r
 251                                 display_mode = display_mode::deinterlace_bob_reinterlace; // The frame will most likely be scaled, we need to deinterlace->reinterlace  \r
 252                                 \r
 253                         if(display_mode == display_mode::deinterlace)\r
 254                                 append_filter(filter_str_, L"YADIF=0:-1");\r
 255                         else if(display_mode == display_mode::deinterlace_bob || display_mode == display_mode::deinterlace_bob_reinterlace)\r
 256                                 append_filter(filter_str_, L"YADIF=1:-1");\r
 257                 }\r
 258                 else\r
 259                         display_mode = display_mode::simple;\r
 260 \r
 261                 if(display_mode == display_mode::invalid)\r
 262                 {\r
 263                         CASPAR_LOG(warning) << L"[frame_muxer] Failed to detect display-mode.";\r
 264                         display_mode = display_mode::simple;\r
 265                 }\r
 266                         \r
 267                 send(filter_, make_safe<filter>(filter_str_));\r
 268 \r
 269                 CASPAR_LOG(info) << "[frame_muxer] " << display_mode::print(display_mode);\r
 270 \r
 271                 send(display_mode_, display_mode);\r
 272         }\r
 273                                         \r
 274         int64_t calc_nb_frames(int64_t nb_frames) const\r
 275         {\r
 276                 switch(display_mode_.value()) // Take into account transformation in run.\r
 277                 {\r
 278                 case display_mode::deinterlace_bob_reinterlace:\r
 279                 case display_mode::interlace:   \r
 280                 case display_mode::half:\r
 281                         nb_frames /= 2;\r
 282                         break;\r
 283                 case display_mode::duplicate:\r
 284                         nb_frames *= 2;\r
 285                         break;\r
 286                 }\r
 287 \r
 288                 if(is_double_rate(widen(filter_.value()->filter_str()))) // Take into account transformations in filter.\r
 289                         nb_frames *= 2;\r
 290 \r
 291                 return nb_frames;\r
 292         }\r
 293 };\r
 294 \r
 295 frame_muxer2::frame_muxer2(video_source_t* video_source, \r
 296                                                    audio_source_t* audio_source,\r
 297                                                    target_t& target,\r
 298                                                    double in_fps, \r
 299                                                    const safe_ptr<core::frame_factory>& frame_factory,\r
 300                                                    const std::wstring& filter)\r
 301         : impl_(new implementation(video_source, audio_source, target, in_fps, frame_factory, filter))\r
 302 {\r
 303 }\r
 304 \r
 305 int64_t frame_muxer2::calc_nb_frames(int64_t nb_frames) const\r
 306 {\r
 307         return impl_->calc_nb_frames(nb_frames);\r
 308 }\r
 309 \r
 310 }}