git.sesse.net Git - casparcg/blob - modules/ffmpeg/producer/muxer/display_mode.h

   1 #pragma once\r
   2 \r
   3 #include <core/video_format.h>\r
   4 \r
   5 namespace caspar { namespace ffmpeg {\r
   6         \r
   7 struct display_mode\r
   8 {\r
   9         enum type\r
  10         {\r
  11                 simple,\r
  12                 duplicate,\r
  13                 half,\r
  14                 interlace,\r
  15                 deinterlace_bob,\r
  16                 deinterlace_bob_reinterlace,\r
  17                 deinterlace,\r
  18                 count,\r
  19                 invalid\r
  20         };\r
  21 \r
  22         static std::wstring print(display_mode::type value)\r
  23         {\r
  24                 switch(value)\r
  25                 {\r
  26                         case simple:                                            return L"simple";\r
  27                         case duplicate:                                         return L"duplicate";\r
  28                         case half:                                                      return L"half";\r
  29                         case interlace:                                         return L"interlace";\r
  30                         case deinterlace_bob:                           return L"deinterlace_bob";\r
  31                         case deinterlace_bob_reinterlace:       return L"deinterlace_bob_reinterlace";\r
  32                         case deinterlace:                                       return L"deinterlace";\r
  33                         default:                                                        return L"invalid";\r
  34                 }\r
  35         }\r
  36 };\r
  37 \r
  38 display_mode::type get_display_mode(const core::field_mode::type in_mode, double in_fps, const core::field_mode::type out_mode, double out_fps)\r
  39 {               \r
  40         static const auto epsilon = 2.0;\r
  41 \r
  42         if(in_fps < 20.0 || in_fps > 80.0)\r
  43         {\r
  44                 //if(out_mode != core::field_mode::progressive && in_mode == core::field_mode::progressive)\r
  45                 //      return display_mode::interlace;\r
  46                 \r
  47                 if(out_mode == core::field_mode::progressive && in_mode != core::field_mode::progressive)\r
  48                 {\r
  49                         if(in_fps < 35.0)\r
  50                                 return display_mode::deinterlace;\r
  51                         else\r
  52                                 return display_mode::deinterlace_bob;\r
  53                 }\r
  54         }\r
  55 \r
  56         if(std::abs(in_fps - out_fps) < epsilon)\r
  57         {\r
  58                 if(in_mode != core::field_mode::progressive && out_mode == core::field_mode::progressive)\r
  59                         return display_mode::deinterlace;\r
  60                 //else if(in_mode == core::field_mode::progressive && out_mode != core::field_mode::progressive)\r
  61                 //      simple(); // interlace_duplicate();\r
  62                 else\r
  63                         return display_mode::simple;\r
  64         }\r
  65         else if(std::abs(in_fps/2.0 - out_fps) < epsilon)\r
  66         {\r
  67                 if(in_mode != core::field_mode::progressive)\r
  68                         return display_mode::invalid;\r
  69 \r
  70                 if(out_mode != core::field_mode::progressive)\r
  71                         return display_mode::interlace;\r
  72                 else\r
  73                         return display_mode::half;\r
  74         }\r
  75         else if(std::abs(in_fps - out_fps/2.0) < epsilon)\r
  76         {\r
  77                 if(out_mode != core::field_mode::progressive)\r
  78                         return display_mode::invalid;\r
  79 \r
  80                 if(in_mode != core::field_mode::progressive)\r
  81                         return display_mode::deinterlace_bob;\r
  82                 else\r
  83                         return display_mode::duplicate;\r
  84         }\r
  85 \r
  86         return display_mode::invalid;\r
  87 }\r
  88 \r
  89 }}