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_transform.h>\r
  13 #include <core/producer/frame/pixel_format.h>\r
  14 #include <core/producer/frame/frame_factory.h>\r
  15 #include <core/mixer/write_frame.h>\r
  16 \r
  17 #include <common/env.h>\r
  18 #include <common/exception/exceptions.h>\r
  19 #include <common/log/log.h>\r
  20 \r
  21 #if defined(_MSC_VER)\r
  22 #pragma warning (push)\r
  23 #pragma warning (disable : 4244)\r
  24 #endif\r
  25 extern "C" \r
  26 {\r
  27         #define __STDC_CONSTANT_MACROS\r
  28         #define __STDC_LIMIT_MACROS\r
  29         #include <libavcodec/avcodec.h>\r
  30         #include <libavformat/avformat.h>\r
  31 }\r
  32 #if defined(_MSC_VER)\r
  33 #pragma warning (pop)\r
  34 #endif\r
  35 \r
  36 #include <boost/foreach.hpp>\r
  37 #include <boost/range/algorithm_ext/push_back.hpp>\r
  38 \r
  39 #include <deque>\r
  40 #include <queue>\r
  41 #include <vector>\r
  42 \r
  43 using namespace caspar::core;\r
  44 \r
  45 namespace caspar { namespace ffmpeg {\r
  46         \r
  47 struct frame_muxer::implementation : boost::noncopyable\r
  48 {       \r
  49         std::queue<std::queue<safe_ptr<write_frame>>>   video_streams_;\r
  50         std::queue<core::audio_buffer>                                  audio_streams_;\r
  51         std::queue<safe_ptr<basic_frame>>                               frame_buffer_;\r
  52         display_mode::type                                                              display_mode_;\r
  53         const double                                                                    in_fps_;\r
  54         const video_format_desc                                                 format_desc_;\r
  55         bool                                                                                    auto_transcode_;\r
  56 \r
  57         size_t                                                                                  audio_sample_count_;\r
  58         size_t                                                                                  video_frame_count_;\r
  59                 \r
  60         safe_ptr<core::frame_factory>                                   frame_factory_;\r
  61         \r
  62         filter                                                                                  filter_;\r
  63         std::wstring                                                                    filter_str_;\r
  64                 \r
  65         implementation(double in_fps, const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filter_str)\r
  66                 : display_mode_(display_mode::invalid)\r
  67                 , in_fps_(in_fps)\r
  68                 , format_desc_(frame_factory->get_video_format_desc())\r
  69                 , auto_transcode_(env::properties().get("configuration.auto-transcode", true))\r
  70                 , audio_sample_count_(0)\r
  71                 , video_frame_count_(0)\r
  72                 , frame_factory_(frame_factory)\r
  73                 , filter_str_(filter_str)\r
  74         {\r
  75                 video_streams_.push(std::queue<safe_ptr<write_frame>>());\r
  76                 audio_streams_.push(core::audio_buffer());\r
  77         }\r
  78 \r
  79         void push(const std::shared_ptr<AVFrame>& video_frame, int hints)\r
  80         {               \r
  81                 if(!video_frame)\r
  82                         return;\r
  83                 \r
  84                 if(video_frame == flush_video())\r
  85                 {       \r
  86                         CASPAR_LOG(trace) << L"video-frame-count: " << static_cast<float>(video_frame_count_);\r
  87                         video_frame_count_ = 0;\r
  88                         video_streams_.push(std::queue<safe_ptr<write_frame>>());\r
  89                 }\r
  90                 else if(video_frame == empty_video())\r
  91                 {\r
  92                         video_streams_.back().push(make_safe<core::write_frame>(this));\r
  93                         ++video_frame_count_;\r
  94                         display_mode_ = display_mode::simple;\r
  95                 }\r
  96                 else\r
  97                 {\r
  98                         if(display_mode_ == display_mode::invalid)\r
  99                                 initialize_display_mode(*video_frame);\r
 100                                 \r
 101                         if(hints & core::frame_producer::ALPHA_HINT)\r
 102                                 video_frame->format = make_alpha_format(video_frame->format);\r
 103                 \r
 104                         auto format = video_frame->format;\r
 105                         if(video_frame->format == CASPAR_PIX_FMT_LUMA) // CASPAR_PIX_FMT_LUMA is not valid for filter, change it to GRAY8\r
 106                                 video_frame->format = PIX_FMT_GRAY8;\r
 107 \r
 108                         filter_.push(video_frame);\r
 109                         BOOST_FOREACH(auto& av_frame, filter_.poll_all())\r
 110                         {\r
 111                                 av_frame->format = format;\r
 112                                 video_streams_.back().push(make_write_frame(this, av_frame, frame_factory_, hints));\r
 113                                 ++video_frame_count_;\r
 114                         }\r
 115                 }\r
 116 \r
 117                 if(video_streams_.back().size() > 32)\r
 118                         BOOST_THROW_EXCEPTION(invalid_operation() << source_info("frame_muxer") << msg_info("video-stream overflow. This can be caused by incorrect frame-rate. Check clip meta-data."));\r
 119         }\r
 120 \r
 121         void push(const std::shared_ptr<core::audio_buffer>& audio)\r
 122         {\r
 123                 if(!audio)      \r
 124                         return;\r
 125 \r
 126                 if(audio == flush_audio())\r
 127                 {\r
 128                         CASPAR_LOG(trace) << L"audio-frame-count: " << audio_sample_count_/format_desc_.audio_samples_per_frame;\r
 129                         audio_sample_count_ = 0;\r
 130                         audio_streams_.push(core::audio_buffer());\r
 131                 }\r
 132                 else if(audio == empty_audio())\r
 133                 {\r
 134                         boost::range::push_back(audio_streams_.back(), core::audio_buffer(format_desc_.audio_samples_per_frame, 0));\r
 135                         audio_sample_count_ += audio->size();\r
 136                 }\r
 137                 else\r
 138                 {\r
 139                         boost::range::push_back(audio_streams_.back(), *audio);\r
 140                         audio_sample_count_ += audio->size();\r
 141                 }\r
 142 \r
 143                 if(audio_streams_.back().size() > 32*format_desc_.audio_samples_per_frame)\r
 144                         BOOST_THROW_EXCEPTION(invalid_operation() << source_info("frame_muxer") << msg_info("audio-stream overflow. This can be caused by incorrect frame-rate. Check clip meta-data."));\r
 145         }\r
 146         \r
 147         bool video_ready() const\r
 148         {               \r
 149                 return video_streams_.size() > 1 || (video_streams_.size() >= audio_streams_.size() && video_ready2());\r
 150         }\r
 151         \r
 152         bool audio_ready() const\r
 153         {\r
 154                 return audio_streams_.size() > 1 || (audio_streams_.size() >= video_streams_.size() && audio_ready2());\r
 155         }\r
 156 \r
 157         bool video_ready2() const\r
 158         {               \r
 159                 switch(display_mode_)\r
 160                 {\r
 161                 case display_mode::deinterlace_bob_reinterlace:                                 \r
 162                 case display_mode::interlace:   \r
 163                 case display_mode::half:\r
 164                         return video_streams_.front().size() >= 2;\r
 165                 default:                                                                                \r
 166                         return video_streams_.front().size() >= 1;\r
 167                 }\r
 168         }\r
 169         \r
 170         bool audio_ready2() const\r
 171         {\r
 172                 switch(display_mode_)\r
 173                 {\r
 174                 case display_mode::duplicate:                                   \r
 175                         return audio_streams_.front().size()/2 >= format_desc_.audio_samples_per_frame;\r
 176                 default:                                                                                \r
 177                         return audio_streams_.front().size() >= format_desc_.audio_samples_per_frame;\r
 178                 }\r
 179         }\r
 180                 \r
 181         std::shared_ptr<basic_frame> poll()\r
 182         {\r
 183                 if(!frame_buffer_.empty())\r
 184                 {\r
 185                         auto frame = frame_buffer_.front();\r
 186                         frame_buffer_.pop();    \r
 187                         return frame;\r
 188                 }\r
 189 \r
 190                 if(video_streams_.size() > 1 && audio_streams_.size() > 1 && (!video_ready2() || !audio_ready2()))\r
 191                 {\r
 192                         if(!video_streams_.front().empty() || !audio_streams_.front().empty())\r
 193                                 CASPAR_LOG(debug) << "Truncating: " << video_streams_.front().size() << L" video-frames, " << audio_streams_.front().size() << L" audio-samples.";\r
 194 \r
 195                         video_streams_.pop();\r
 196                         audio_streams_.pop();\r
 197                 }\r
 198 \r
 199                 if(!video_ready2() || !audio_ready2())\r
 200                         return nullptr;\r
 201                                 \r
 202                 auto frame1                             = pop_video();\r
 203                 frame1->audio_data()    = pop_audio();\r
 204 \r
 205                 switch(display_mode_)\r
 206                 {\r
 207                 case display_mode::simple:                                              \r
 208                 case display_mode::deinterlace_bob:                             \r
 209                 case display_mode::deinterlace: \r
 210                 {\r
 211                         frame_buffer_.push(frame1);\r
 212                         break;\r
 213                 }\r
 214                 case display_mode::interlace:                                   \r
 215                 case display_mode::deinterlace_bob_reinterlace: \r
 216                 {                               \r
 217                         auto frame2 = pop_video();\r
 218 \r
 219                         frame_buffer_.push(core::basic_frame::interlace(frame1, frame2, format_desc_.field_mode));      \r
 220                         break;\r
 221                 }\r
 222                 case display_mode::duplicate:   \r
 223                 {\r
 224                         auto frame2                             = make_safe<core::write_frame>(*frame1);\r
 225                         frame2->audio_data()    = pop_audio();\r
 226 \r
 227                         frame_buffer_.push(frame1);\r
 228                         frame_buffer_.push(frame2);\r
 229                         break;\r
 230                 }\r
 231                 case display_mode::half:        \r
 232                 {                               \r
 233                         pop_video(); // Throw away\r
 234 \r
 235                         frame_buffer_.push(frame1);\r
 236                         break;\r
 237                 }\r
 238                 default:                                                                                \r
 239                         BOOST_THROW_EXCEPTION(invalid_operation() << msg_info("invalid display-mode"));\r
 240                 }\r
 241                 \r
 242                 return frame_buffer_.empty() ? nullptr : poll();\r
 243         }\r
 244         \r
 245         safe_ptr<core::write_frame> pop_video()\r
 246         {\r
 247                 auto frame = video_streams_.front().front();\r
 248                 video_streams_.front().pop();           \r
 249                 return frame;\r
 250         }\r
 251 \r
 252         core::audio_buffer pop_audio()\r
 253         {\r
 254                 CASPAR_VERIFY(audio_streams_.front().size() >= format_desc_.audio_samples_per_frame);\r
 255 \r
 256                 auto begin = audio_streams_.front().begin();\r
 257                 auto end   = begin + format_desc_.audio_samples_per_frame;\r
 258 \r
 259                 auto samples = core::audio_buffer(begin, end);\r
 260                 audio_streams_.front().erase(begin, end);\r
 261 \r
 262                 return samples;\r
 263         }\r
 264                                 \r
 265         void initialize_display_mode(const AVFrame& frame)\r
 266         {\r
 267                 display_mode_ = display_mode::simple;\r
 268                 if(auto_transcode_)\r
 269                 {\r
 270                         auto mode = get_mode(frame);\r
 271                         auto fps  = in_fps_;\r
 272 \r
 273                         if(is_deinterlacing(filter_str_))\r
 274                                 mode = core::field_mode::progressive;\r
 275 \r
 276                         if(is_double_rate(filter_str_))\r
 277                                 fps *= 2;\r
 278                         \r
 279                         display_mode_ = get_display_mode(mode, fps, format_desc_.field_mode, format_desc_.fps);\r
 280                         \r
 281                         if((frame.height != 480 || format_desc_.height != 486) && \r
 282                                 display_mode_ == display_mode::simple && mode != core::field_mode::progressive && format_desc_.field_mode != core::field_mode::progressive && \r
 283                                 frame.height != static_cast<int>(format_desc_.height))\r
 284                         {\r
 285                                 display_mode_ = display_mode::deinterlace_bob_reinterlace; // The frame will most likely be scaled, we need to deinterlace->reinterlace \r
 286                         }\r
 287 \r
 288                         if(display_mode_ == display_mode::deinterlace)\r
 289                                 filter_str_ = append_filter(filter_str_, L"YADIF=0:-1");\r
 290                         else if(display_mode_ == display_mode::deinterlace_bob || display_mode_ == display_mode::deinterlace_bob_reinterlace)\r
 291                                 filter_str_ = append_filter(filter_str_, L"YADIF=1:-1");\r
 292                 }\r
 293 \r
 294                 if(display_mode_ == display_mode::invalid)\r
 295                 {\r
 296                         CASPAR_LOG(warning) << L"[frame_muxer] Auto-transcode: Failed to detect display-mode.";\r
 297                         display_mode_ = display_mode::simple;\r
 298                 }\r
 299                         \r
 300                 filter_ = filter(filter_str_);\r
 301 \r
 302                 CASPAR_LOG(info) << "[frame_muxer] " << display_mode::print(display_mode_) \r
 303                         << L" " << frame.width << L"x" << frame.height \r
 304                         << (frame.interlaced_frame ? L"i" : L"p") \r
 305                         << (frame.interlaced_frame ? in_fps_*2 : in_fps_);\r
 306         }\r
 307 \r
 308         int64_t calc_nb_frames(int64_t nb_frames) const\r
 309         {\r
 310                 switch(display_mode_) // Take into account transformation in run.\r
 311                 {\r
 312                 case display_mode::deinterlace_bob_reinterlace:\r
 313                 case display_mode::interlace:   \r
 314                 case display_mode::half:\r
 315                         nb_frames /= 2;\r
 316                         break;\r
 317                 case display_mode::duplicate:\r
 318                         nb_frames *= 2;\r
 319                         break;\r
 320                 }\r
 321 \r
 322                 if(is_double_rate(widen(filter_.filter_str()))) // Take into account transformations in filter.\r
 323                         nb_frames *= 2;\r
 324 \r
 325                 return nb_frames;\r
 326         }\r
 327 };\r
 328 \r
 329 frame_muxer::frame_muxer(double in_fps, const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filter)\r
 330         : impl_(new implementation(in_fps, frame_factory, filter)){}\r
 331 void frame_muxer::push(const std::shared_ptr<AVFrame>& video_frame, int hints){impl_->push(video_frame, hints);}\r
 332 void frame_muxer::push(const std::shared_ptr<core::audio_buffer>& audio_samples){return impl_->push(audio_samples);}\r
 333 std::shared_ptr<basic_frame> frame_muxer::poll(){return impl_->poll();}\r
 334 int64_t frame_muxer::calc_nb_frames(int64_t nb_frames) const {return impl_->calc_nb_frames(nb_frames);}\r
 335 bool frame_muxer::video_ready() const{return impl_->video_ready();}\r
 336 bool frame_muxer::audio_ready() const{return impl_->audio_ready();}\r
 337 \r
 338 }}