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