marker.cpp

   1 #include "marker.hpp"
   2 #include "parseval.hpp"
   3
   4 timemarker::timemarker()
   5 {
   6         mode = 0;
   7 }
   8
   9 timemarker::timemarker(const std::string& tspec)
  10 {
  11         regex_results r;
  12         if(r = regex("(0|[1-9][0-9]*)", tspec)) {
  13                 mode = 1;
  14                 frame = parse_value<uint64_t>(r[1]);
  15         } else if(r = regex("(0|[1-9][0-9]*):([0-9]|[0-5][0-9]):([0-9]|[0-5][0-9])(\\.([0-9]+))?", tspec)) {
  16                 mode = 2;
  17                 timepos = parse_value<uint64_t>(r[1]) * 3600 +
  18                         parse_value<uint64_t>(r[2]) * 60 +
  19                         parse_value<uint64_t>(r[3]);
  20                 if(r[4] != "")
  21                         timepos += parse_value<double>("0" + r[4]);
  22         } else if(r = regex("([0-9]|[0-5][0-9]):([0-9]|[0-5][0-9])(\\.([0-9]+))?", tspec)) {
  23                 mode = 2;
  24                 timepos = parse_value<uint64_t>(r[1]) * 60 +
  25                         parse_value<uint64_t>(r[2]);
  26                 if(r[3] != "")
  27                         timepos += parse_value<double>("0" + r[3]);
  28         } else if(r = regex("(0|[1-9][0-9]*)(\\.([0-9]+))?", tspec)) {
  29                 mode = 2;
  30                 timepos = parse_value<uint64_t>(r[1]);
  31                 if(r[2] != "")
  32                         timepos += parse_value<double>("0" + r[2]);
  33         } else
  34                 throw std::runtime_error("Bad timespec");
  35 }
  36
  37 uint64_t timemarker::get_frame(double fps, uint64_t dflt) const
  38 {
  39         if(mode == 0)
  40                 return dflt;
  41         if(mode == 1)
  42                 return frame;
  43         if(mode == 2)
  44                 return fps * timepos + 0.5;
  45         return dflt;
  46 }