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Use linear xfade curves

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This commit is contained in:
Jean Pierre Cimalando 2020-09-30 20:29:50 +02:00
parent fda4b5931c
commit 453d489d4a
1 changed files with 23 additions and 6 deletions
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29
src/sfizz/Voice.cpp
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@ -625,6 +625,9 @@ void sfz::Voice::fillWithData(AudioSpan<float> buffer) noexcept
// computed along with index processing below
}
// loop crossfade settings
constexpr bool loopXfadeUseCurves = false; // 0: linear, 1: use curves 5 & 6
// index preprocessing for loops
if (isLooping) {
int oldIndex {};
@ -711,10 +714,17 @@ void sfz::Voice::fillWithData(AudioSpan<float> buffer) noexcept
// -> fade out signal nearing the loop end
{
// compute out curve
const Curve& xfOut = resources.curves.getCurve(6);
absl::Span<float> xfCurve = xfadeTemp[1]->first(ptSize);
for (unsigned i = 0; i < ptSize; ++i)
xfCurve[i] = xfOut.evalNormalized(xfCoeff[i]);
IF_CONSTEXPR (loopXfadeUseCurves) {
const Curve& xfOut = resources.curves.getCurve(6);
for (unsigned i = 0; i < ptSize; ++i)
xfCurve[i] = xfOut.evalNormalized(xfCoeff[i]);
}
else {
// TODO(jpc) vectorize this
for (unsigned i = 0; i < ptSize; ++i)
xfCurve[i] = clamp(1.0f - xfCoeff[i], 0.0f, 1.0f);
}
// apply out curve
if (0)
ptBuffer.applyGain(xfCurve);
@ -752,10 +762,17 @@ void sfz::Voice::fillWithData(AudioSpan<float> buffer) noexcept
AudioSpan<float> xfInBuffer = ptBuffer.subspan(applyOffset);
// compute in curve
const Curve& xfIn = resources.curves.getCurve(5);
absl::Span<float> xfCurve = xfadeTemp[1]->first(applySize);
for (unsigned i = 0; i < applySize; ++i)
xfCurve[i] = xfIn.evalNormalized(xfInCoeff[i]);
IF_CONSTEXPR (loopXfadeUseCurves) {
const Curve& xfIn = resources.curves.getCurve(5);
for (unsigned i = 0; i < applySize; ++i)
xfCurve[i] = xfIn.evalNormalized(xfInCoeff[i]);
}
else {
// TODO(jpc) vectorize this
for (unsigned i = 0; i < applySize; ++i)
xfCurve[i] = clamp(xfInCoeff[i], 0.0f, 1.0f);
}
// apply in curve
fillInterpolatedWithQuality<true>(
source, xfInBuffer, xfInIndices, *coeffs, xfCurve, quality);