Impala Documentation

String Impala::Core::VideoSet::Mpeg7Doc::Frame2Duration ( int frame ) [inline, private]

Definition at line 579 of file Mpeg7Doc.h.

00580     {
00581         // produce something like PT00H00M04S2122N30000F
00582         long totalFractions = frame;
00583         if (mFractions == 30000) // probably NTSC with time unit PT1001N30000F
00584             totalFractions *= 1001;
00585         long nrFractions = totalFractions % mFractions;
00586         long totalSeconds = (totalFractions - nrFractions) / mFractions;
00587         long hours = totalSeconds / 3600;
00588         totalSeconds %= 3600;
00589         long minutes = totalSeconds / 60;
00590         long seconds = totalSeconds % 60;
00591         return "PT" + String2(hours) + "H" + String2(minutes) + "M" +
00592             String2(seconds) + "S" + String2(nrFractions) + "N" +
00593             String2(mFractions) + "F";
00594     }

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