| long Impala::Core::VideoSet::Mpeg7DocAudio::GetMediaDuration | ( | DOMNode * | mediaTime | ) | [inline, private] |
Definition at line 290 of file Mpeg7DocAudio.h.
References Impala::Util::StringParser::AdvanceP(), Impala::Util::StringParser::Contains(), Impala::Util::StringParser::Eat(), Impala::Util::XmlDoc::GetChildNode(), Impala::Util::XmlDoc::GetElementValue(), and Impala::Util::StringParser::GetInt().
Referenced by AddSegment(), and ReadData().
00291 { 00292 DOMNode* duration = GetChildNode(mediaTime, "MediaDuration", true); 00293 String s = GetElementValue(duration); 00294 // e.g. s = PT00H00M04S2122N30000F 00295 Util::StringParser p(s); 00296 p.Eat('T'); // T is begin of duration 00297 long total = 0; 00298 if (p.Contains("H")) 00299 { 00300 total += p.GetInt('H') * 3600; 00301 p.AdvanceP(1); 00302 } 00303 if (p.Contains("M")) 00304 { 00305 total += p.GetInt('M') * 60; 00306 p.AdvanceP(1); 00307 } 00308 if (p.Contains("S")) 00309 { 00310 total += p.GetInt('S'); 00311 p.AdvanceP(1); 00312 } 00313 long fractions = p.GetInt('N'); 00314 p.AdvanceP(1); 00315 long nrFractions = p.GetInt('F'); 00316 long dur = total*nrFractions + fractions; 00317 if (nrFractions == 30000) // probably NTSC with time unit PT1001N30000F 00318 dur /= 1001; 00319 return dur; 00320 }
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