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

   1 #include "../StdAfx.h"\r
   2 \r
   3 #include "frame_muxer.h"\r
   4 \r
   5 #include "filter/filter.h"\r
   6 \r
   7 #include "util.h"\r
   8 \r
   9 #include <core/producer/frame_producer.h>\r
  10 #include <core/producer/frame/basic_frame.h>\r
  11 #include <core/producer/frame/image_transform.h>\r
  12 #include <core/producer/frame/pixel_format.h>\r
  13 #include <core/producer/frame/frame_factory.h>\r
  14 #include <core/mixer/write_frame.h>\r
  15 \r
  16 #include <common/env.h>\r
  17 #include <common/exception/exceptions.h>\r
  18 #include <common/log/log.h>\r
  19 \r
  20 #if defined(_MSC_VER)\r
  21 #pragma warning (push)\r
  22 #pragma warning (disable : 4244)\r
  23 #endif\r
  24 extern "C" \r
  25 {\r
  26         #define __STDC_CONSTANT_MACROS\r
  27         #define __STDC_LIMIT_MACROS\r
  28         #include <libavcodec/avcodec.h>\r
  29         #include <libavformat/avformat.h>\r
  30 }\r
  31 #if defined(_MSC_VER)\r
  32 #pragma warning (pop)\r
  33 #endif\r
  34 \r
  35 #include <boost/foreach.hpp>\r
  36 #include <boost/range/algorithm_ext/push_back.hpp>\r
  37 \r
  38 #include <deque>\r
  39 #include <queue>\r
  40 #include <vector>\r
  41 \r
  42 using namespace caspar::core;\r
  43 \r
  44 namespace caspar {\r
  45 \r
  46 struct display_mode\r
  47 {\r
  48         enum type\r
  49         {\r
  50                 simple,\r
  51                 duplicate,\r
  52                 half,\r
  53                 interlace,\r
  54                 deinterlace_bob,\r
  55                 deinterlace_bob_reinterlace,\r
  56                 deinterlace,\r
  57                 count,\r
  58                 invalid\r
  59         };\r
  60 \r
  61         static std::wstring print(display_mode::type value)\r
  62         {\r
  63                 switch(value)\r
  64                 {\r
  65                         case simple:\r
  66                                 return L"simple";\r
  67                         case duplicate:\r
  68                                 return L"duplicate";\r
  69                         case half:\r
  70                                 return L"half";\r
  71                         case interlace:\r
  72                                 return L"interlace";\r
  73                         case deinterlace_bob:\r
  74                                 return L"deinterlace_bob";\r
  75                         case deinterlace_bob_reinterlace:\r
  76                                 return L"deinterlace_bob_reinterlace";\r
  77                         case deinterlace:\r
  78                                 return L"deinterlace";\r
  79                         default:\r
  80                                 return L"invalid";\r
  81                 }\r
  82         }\r
  83 };\r
  84 \r
  85 display_mode::type get_display_mode(const core::video_mode::type in_mode, double in_fps, const core::video_mode::type out_mode, double out_fps)\r
  86 {               \r
  87         static const auto epsilon = 2.0;\r
  88 \r
  89         if(std::abs(in_fps - out_fps) < epsilon)\r
  90         {\r
  91                 if(in_mode != core::video_mode::progressive && out_mode == core::video_mode::progressive)\r
  92                         return display_mode::deinterlace;\r
  93                 //else if(in_mode == core::video_mode::progressive && out_mode != core::video_mode::progressive)\r
  94                 //      simple(); // interlace_duplicate();\r
  95                 else\r
  96                         return display_mode::simple;\r
  97         }\r
  98         else if(std::abs(in_fps/2.0 - out_fps) < epsilon)\r
  99         {\r
 100                 if(in_mode != core::video_mode::progressive)\r
 101                         return display_mode::invalid;\r
 102 \r
 103                 if(out_mode != core::video_mode::progressive)\r
 104                         return display_mode::interlace;\r
 105                 else\r
 106                         return display_mode::half;\r
 107         }\r
 108         else if(std::abs(in_fps - out_fps/2.0) < epsilon)\r
 109         {\r
 110                 if(out_mode != core::video_mode::progressive)\r
 111                         return display_mode::invalid;\r
 112 \r
 113                 if(in_mode != core::video_mode::progressive)\r
 114                         return display_mode::deinterlace_bob;\r
 115                 else\r
 116                         return display_mode::duplicate;\r
 117         }\r
 118 \r
 119         return display_mode::invalid;\r
 120 }\r
 121 \r
 122 struct frame_muxer::implementation : boost::noncopyable\r
 123 {       \r
 124         std::deque<std::queue<safe_ptr<write_frame>>>   video_streams_;\r
 125         std::deque<std::vector<int16_t>>                                audio_streams_;\r
 126         std::deque<safe_ptr<basic_frame>>                               frame_buffer_;\r
 127         display_mode::type                                                              display_mode_;\r
 128         const double                                                                    in_fps_;\r
 129         const video_format_desc                                                 format_desc_;\r
 130         bool                                                                                    auto_mode_;\r
 131 \r
 132         size_t                                                                                  audio_sample_count_;\r
 133         size_t                                                                                  video_frame_count_;\r
 134                 \r
 135         size_t                                                                                  processed_audio_sample_count_;\r
 136         size_t                                                                                  processed_video_frame_count_;\r
 137 \r
 138         filter                                                                                  filter_;\r
 139         safe_ptr<core::frame_factory>                                   frame_factory_;\r
 140                 \r
 141         implementation(double in_fps, const safe_ptr<core::frame_factory>& frame_factory)\r
 142                 : video_streams_(1)\r
 143                 , audio_streams_(1)\r
 144                 , display_mode_(display_mode::invalid)\r
 145                 , in_fps_(in_fps)\r
 146                 , format_desc_(frame_factory->get_video_format_desc())\r
 147                 , auto_mode_(env::properties().get("configuration.auto-mode", false))\r
 148                 , audio_sample_count_(0)\r
 149                 , video_frame_count_(0)\r
 150                 , frame_factory_(frame_factory)\r
 151         {\r
 152         }\r
 153 \r
 154         void push(const std::shared_ptr<AVFrame>& video_frame, int hints)\r
 155         {               \r
 156                 if(!video_frame)\r
 157                 {       \r
 158                         CASPAR_LOG(debug) << L"video-frame-count: " << static_cast<float>(video_frame_count_);\r
 159                         video_frame_count_ = 0;\r
 160                         video_streams_.push_back(std::queue<safe_ptr<write_frame>>());\r
 161                         return;\r
 162                 }\r
 163 \r
 164                 if(video_frame->data[0] == nullptr)\r
 165                 {\r
 166                         video_streams_.back().push(make_safe<core::write_frame>(this));\r
 167                         ++video_frame_count_;\r
 168                         display_mode_ = display_mode::simple;\r
 169                         put_frames(frame_buffer_);\r
 170                         return;\r
 171                 }\r
 172 \r
 173                 if(display_mode_ == display_mode::invalid)\r
 174                 {\r
 175                         if(auto_mode_)\r
 176                         {\r
 177                                 auto in_mode = get_mode(*video_frame);\r
 178                                 display_mode_ = get_display_mode(in_mode, in_fps_, format_desc_.mode, format_desc_.fps);\r
 179                         \r
 180                                 if(display_mode_ == display_mode::simple && in_mode != core::video_mode::progressive && format_desc_.mode != core::video_mode::progressive && video_frame->height != static_cast<int>(format_desc_.height))\r
 181                                         display_mode_ = display_mode::deinterlace_bob_reinterlace; // The frame will most likely be scaled, we need to deinterlace->reinterlace \r
 182                                 \r
 183                                 if(display_mode_ == display_mode::deinterlace)\r
 184                                         filter_ = filter(L"YADIF=0:-1");\r
 185                                 else if(display_mode_ == display_mode::deinterlace_bob || display_mode_ == display_mode::deinterlace_bob_reinterlace)\r
 186                                         filter_ = filter(L"YADIF=1:-1");\r
 187                         }\r
 188                         else\r
 189                                 display_mode_ = display_mode::simple;\r
 190 \r
 191                         CASPAR_LOG(info) << "frame_muxer: " << display_mode::print(display_mode_);\r
 192                 }\r
 193                                 \r
 194                 if(hints & core::frame_producer::ALPHA_HINT)\r
 195                         try_make_gray(make_safe(video_frame));\r
 196 \r
 197                 BOOST_FOREACH(auto& av_frame, filter_.execute(video_frame))\r
 198                 {\r
 199                         auto frame = make_write_frame(this, av_frame, frame_factory_, hints);\r
 200 \r
 201                         // Fix field-order if needed\r
 202                         if(frame->get_type() == core::video_mode::lower && format_desc_.mode == core::video_mode::upper)\r
 203                                 frame->get_image_transform().set_fill_translation(0.0f, 0.5/static_cast<double>(frame->get_pixel_format_desc().planes[0].height));\r
 204                         else if(frame->get_type() == core::video_mode::upper && format_desc_.mode == core::video_mode::lower)\r
 205                                 frame->get_image_transform().set_fill_translation(0.0f, -0.5/static_cast<double>(frame->get_pixel_format_desc().planes[0].height));\r
 206 \r
 207                         video_streams_.back().push(frame);\r
 208                         ++video_frame_count_;\r
 209 \r
 210                         put_frames(frame_buffer_);\r
 211                 }\r
 212         }\r
 213 \r
 214         void push(const std::shared_ptr<std::vector<int16_t>>& audio_samples)\r
 215         {\r
 216                 if(!audio_samples)      \r
 217                 {\r
 218                         CASPAR_LOG(debug) << L"audio-chunk-count: " << audio_sample_count_/format_desc_.audio_samples_per_frame;\r
 219                         audio_streams_.push_back(std::vector<int16_t>());\r
 220                         audio_sample_count_ = 0;\r
 221                         return;\r
 222                 }\r
 223 \r
 224                 audio_sample_count_ += audio_samples->size();\r
 225 \r
 226                 boost::range::push_back(audio_streams_.back(), *audio_samples);\r
 227                 put_frames(frame_buffer_);\r
 228         }\r
 229 \r
 230         safe_ptr<basic_frame> pop()\r
 231         {               \r
 232                 auto frame = frame_buffer_.front();\r
 233                 frame_buffer_.pop_front();              \r
 234                 return frame;\r
 235         }\r
 236 \r
 237         size_t size() const\r
 238         {\r
 239                 return frame_buffer_.size();\r
 240         }\r
 241 \r
 242         safe_ptr<core::write_frame> pop_video()\r
 243         {\r
 244                 auto frame = video_streams_.front().front();\r
 245                 video_streams_.front().pop();\r
 246                 \r
 247                 return frame;\r
 248         }\r
 249 \r
 250         std::vector<int16_t> pop_audio()\r
 251         {\r
 252                 CASPAR_VERIFY(audio_streams_.front().size() >= format_desc_.audio_samples_per_frame);\r
 253 \r
 254                 auto begin = audio_streams_.front().begin();\r
 255                 auto end   = begin + format_desc_.audio_samples_per_frame;\r
 256 \r
 257                 auto samples = std::vector<int16_t>(begin, end);\r
 258                 audio_streams_.front().erase(begin, end);\r
 259 \r
 260                 return samples;\r
 261         }\r
 262 \r
 263         bool video_ready() const\r
 264         {\r
 265                 return video_frames() > 1 && video_streams_.size() >= audio_streams_.size();\r
 266         }\r
 267         \r
 268         bool audio_ready() const\r
 269         {\r
 270                 return audio_chunks() > 1 && audio_streams_.size() >= video_streams_.size();\r
 271         }\r
 272 \r
 273         size_t video_frames() const\r
 274         {\r
 275                 return video_streams_.back().size();\r
 276         }\r
 277 \r
 278         size_t audio_chunks() const\r
 279         {\r
 280                 return audio_streams_.back().size() / format_desc_.audio_samples_per_frame;\r
 281         }\r
 282         \r
 283         void put_frames(std::deque<safe_ptr<basic_frame>>& dest)\r
 284         {\r
 285                 if(video_streams_.size() > 1 && audio_streams_.size() > 1 &&\r
 286                         (video_streams_.front().empty() || audio_streams_.front().empty()))\r
 287                 {\r
 288                         if(!video_streams_.front().empty() || !audio_streams_.front().empty())\r
 289                                 CASPAR_LOG(debug) << "Truncating: " << video_streams_.front().size() << L" video-frames, " << audio_streams_.front().size() << L" audio-samples.";\r
 290 \r
 291                         video_streams_.pop_front();\r
 292                         audio_streams_.pop_front();\r
 293                 }\r
 294 \r
 295                 if(video_streams_.front().empty() || audio_streams_.front().size() < format_desc_.audio_samples_per_frame)\r
 296                         return;\r
 297                 \r
 298                 switch(display_mode_)\r
 299                 {\r
 300                 case display_mode::simple:                                              return simple(dest);\r
 301                 case display_mode::duplicate:                                   return duplicate(dest);\r
 302                 case display_mode::half:                                                return half(dest);\r
 303                 case display_mode::interlace:                                   return interlace(dest);\r
 304                 case display_mode::deinterlace_bob:                             return simple(dest);\r
 305                 case display_mode::deinterlace_bob_reinterlace: return interlace(dest);\r
 306                 case display_mode::deinterlace:                                 return simple(dest);\r
 307                 default:                                                                                BOOST_THROW_EXCEPTION(invalid_operation() << msg_info("invalid display-mode"));\r
 308                 }\r
 309         }\r
 310 \r
 311         void simple(std::deque<safe_ptr<basic_frame>>& dest)\r
 312         {\r
 313                 if(video_streams_.front().empty() || audio_streams_.front().size() < format_desc_.audio_samples_per_frame)\r
 314                         return;\r
 315                 \r
 316                 auto frame1 = pop_video();\r
 317                 frame1->audio_data() = pop_audio();\r
 318 \r
 319                 dest.push_back(frame1);         \r
 320         }\r
 321 \r
 322         void duplicate(std::deque<safe_ptr<basic_frame>>& dest)\r
 323         {               \r
 324                 if(video_streams_.front().empty() || audio_streams_.front().size()/2 < format_desc_.audio_samples_per_frame)\r
 325                         return;\r
 326 \r
 327                 auto frame = pop_video();\r
 328 \r
 329                 auto frame1 = make_safe<core::write_frame>(*frame); // make a copy\r
 330                 frame1->audio_data() = pop_audio();\r
 331 \r
 332                 auto frame2 = frame;\r
 333                 frame2->audio_data() = pop_audio();\r
 334 \r
 335                 dest.push_back(frame1);\r
 336                 dest.push_back(frame2);\r
 337         }\r
 338 \r
 339         void half(std::deque<safe_ptr<basic_frame>>& dest)\r
 340         {       \r
 341                 if(video_streams_.front().size() < 2 || audio_streams_.front().size() < format_desc_.audio_samples_per_frame)\r
 342                         return;\r
 343                                                 \r
 344                 auto frame1 = pop_video();\r
 345                 frame1->audio_data() = pop_audio();\r
 346                                 \r
 347                 video_streams_.front().pop(); // Throw away\r
 348 \r
 349                 dest.push_back(frame1);\r
 350         }\r
 351         \r
 352         void interlace(std::deque<safe_ptr<basic_frame>>& dest)\r
 353         {               \r
 354                 if(video_streams_.front().size() < 2 || audio_streams_.front().size() < format_desc_.audio_samples_per_frame)\r
 355                         return;\r
 356                 \r
 357                 auto frame1 = pop_video();\r
 358                 frame1->audio_data() = pop_audio();\r
 359                                 \r
 360                 auto frame2 = pop_video();\r
 361 \r
 362                 dest.push_back(core::basic_frame::interlace(frame1, frame2, format_desc_.mode));                \r
 363         }\r
 364 };\r
 365 \r
 366 frame_muxer::frame_muxer(double in_fps, const safe_ptr<core::frame_factory>& frame_factory)\r
 367         : impl_(new implementation(in_fps, frame_factory)){}\r
 368 void frame_muxer::push(const std::shared_ptr<AVFrame>& video_frame, int hints){impl_->push(video_frame, hints);}\r
 369 void frame_muxer::push(const std::shared_ptr<std::vector<int16_t>>& audio_samples){return impl_->push(audio_samples);}\r
 370 safe_ptr<basic_frame> frame_muxer::pop(){return impl_->pop();}\r
 371 size_t frame_muxer::size() const {return impl_->size();}\r
 372 bool frame_muxer::empty() const {return impl_->size() == 0;}\r
 373 bool frame_muxer::video_ready() const{return impl_->video_ready();}\r
 374 bool frame_muxer::audio_ready() const{return impl_->audio_ready();}\r
 375 \r
 376 }