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Code Issues Releases Wiki Activity

Fix for bug 955 from Clayton Otey

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This commit is contained in:
Steve Daulton
2016-01-26 18:19:19 +00:00
parent f7fba31319
commit 954bb0fd1c
8 changed files with 146 additions and 12 deletions
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36
src/effects/TimeScale.cpp
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@@ -72,6 +72,11 @@ EffectTimeScale::EffectTimeScale()
m_PitchPercentChangeStart = DEF_PitchPercentStart;
m_PitchPercentChangeEnd = DEF_PitchPercentEnd;
slideTypeRate = SlideLinearOutputRate;
slideTypePitch = SlideLinearOutputRate;
bPreview = false;
previewSelectedDuration = 0.0;
SetLinearEffectFlag(true);
}
@@ -143,13 +148,42 @@ bool EffectTimeScale::Init()
return true;
}
double EffectTimeScale::CalcPreviewInputLength(double previewLength)
{
double inputLength = Effect::GetDuration();
if(inputLength == 0.0) {
return 0.0;
} else {
double rateStart = PercentChangeToRatio(m_RatePercentChangeStart);
double rateEnd = PercentChangeToRatio(m_RatePercentChangeEnd);
double tOut = previewLength/inputLength;
double t = EffectSBSMS::getInvertedStretchedTime(rateStart,rateEnd,slideTypeRate,tOut);
return t * inputLength;
}
}
void EffectTimeScale::Preview(bool dryOnly)
{
previewSelectedDuration = Effect::GetDuration();
bPreview = true;
Effect::Preview(dryOnly);
bPreview = false;
}
bool EffectTimeScale::Process()
{
double pitchStart = PercentChangeToRatio(m_PitchPercentChangeStart);
double pitchEnd = PercentChangeToRatio(m_PitchPercentChangeEnd);
double rateStart = PercentChangeToRatio(m_RatePercentChangeStart);
double rateEnd = PercentChangeToRatio(m_RatePercentChangeEnd);
EffectSBSMS::setParameters(rateStart,rateEnd,pitchStart,pitchEnd,SlideLinearOutputRate,SlideLinearOutputRate,false,false,false);
if(bPreview) {
double t = (mT1-mT0) / previewSelectedDuration;
rateEnd = EffectSBSMS::getRate(rateStart,rateEnd,slideTypeRate,t);
pitchEnd = EffectSBSMS::getRate(pitchStart,pitchEnd,slideTypePitch,t);
}
EffectSBSMS::setParameters(rateStart,rateEnd,pitchStart,pitchEnd,slideTypeRate,slideTypePitch,false,false,false);
return EffectSBSMS::Process();
}