| long Impala::Core::VideoSet::Mpeg7DocAudio::GetMediaDuration | ( | DOMNode * | mediaTime | ) | [inline, private] |
Definition at line 289 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().
00290 { 00291 DOMNode* duration = GetChildNode(mediaTime, "MediaDuration", true); 00292 String s = GetElementValue(duration); 00293 // e.g. s = PT00H00M04S2122N30000F 00294 Util::StringParser p(s); 00295 p.Eat('T'); // T is begin of duration 00296 long total = 0; 00297 if (p.Contains("H")) 00298 { 00299 total += p.GetInt('H') * 3600; 00300 p.AdvanceP(1); 00301 } 00302 if (p.Contains("M")) 00303 { 00304 total += p.GetInt('M') * 60; 00305 p.AdvanceP(1); 00306 } 00307 if (p.Contains("S")) 00308 { 00309 total += p.GetInt('S'); 00310 p.AdvanceP(1); 00311 } 00312 long fractions = p.GetInt('N'); 00313 p.AdvanceP(1); 00314 long nrFractions = p.GetInt('F'); 00315 long dur = total*nrFractions + fractions; 00316 if (nrFractions == 30000) // probably NTSC with time unit PT1001N30000F 00317 dur /= 1001; 00318 return dur; 00319 }
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