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Ensure a couple calls are constexpr

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This commit is contained in:
Chris Robinson 2019-05-26 15:57:17 -07:00
parent 01f717ae59
commit b0e12ccf71
1 changed files with 6 additions and 4 deletions
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10
Alc/effects/reverb.cpp
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@ -197,6 +197,7 @@ constexpr std::array<ALfloat,NUM_LINES> EARLY_LINE_LENGTHS{{
constexpr std::array<ALfloat,NUM_LINES> LATE_ALLPASS_LENGTHS{{
1.6182800e-4f, 2.0389060e-4f, 2.8159360e-4f, 3.2365600e-4f
}};
constexpr auto LATE_ALLPASS_LENGTHS_size = LATE_ALLPASS_LENGTHS.size();
/* The late lines are used to approximate the decaying cycle of recursive
* late reflections.
@ -216,6 +217,7 @@ constexpr std::array<ALfloat,NUM_LINES> LATE_ALLPASS_LENGTHS{{
constexpr std::array<ALfloat,NUM_LINES> LATE_LINE_LENGTHS{{
1.9419362e-3f, 2.4466860e-3f, 3.3791220e-3f, 3.8838720e-3f
}};
constexpr auto LATE_LINE_LENGTHS_size = LATE_LINE_LENGTHS.size();
struct DelayLineI {
@ -512,7 +514,7 @@ bool ReverbState::allocLines(const ALfloat frequency)
*/
ALfloat length{AL_EAXREVERB_MAX_REFLECTIONS_DELAY + EARLY_TAP_LENGTHS.back()*multiplier +
AL_EAXREVERB_MAX_LATE_REVERB_DELAY +
(LATE_LINE_LENGTHS.back() - LATE_LINE_LENGTHS.front())/float{LATE_LINE_LENGTHS.size()}*multiplier};
(LATE_LINE_LENGTHS.back() - LATE_LINE_LENGTHS.front())/float{LATE_LINE_LENGTHS_size}*multiplier};
totalSamples += CalcLineLength(length, totalSamples, frequency, BUFFERSIZE, &mDelay);
/* The early vector all-pass line. */
@ -750,7 +752,7 @@ void LateReverb::updateLines(const ALfloat density, const ALfloat diffusion,
const ALfloat late_allpass_avg{
std::accumulate(LATE_ALLPASS_LENGTHS.begin(), LATE_ALLPASS_LENGTHS.end(), 0.0f) /
float{LATE_ALLPASS_LENGTHS.size()}};
float{LATE_ALLPASS_LENGTHS_size}};
/* To compensate for changes in modal density and decay time of the late
* reverb signal, the input is attenuated based on the maximal energy of
@ -762,7 +764,7 @@ void LateReverb::updateLines(const ALfloat density, const ALfloat diffusion,
*/
const ALfloat multiplier{CalcDelayLengthMult(density)};
ALfloat length{std::accumulate(LATE_LINE_LENGTHS.begin(), LATE_LINE_LENGTHS.end(), 0.0f) /
float{LATE_LINE_LENGTHS.size()} * multiplier};
float{LATE_LINE_LENGTHS_size} * multiplier};
length += late_allpass_avg * multiplier;
/* The density gain calculation uses an average decay time weighted by
* approximate bandwidth. This attempts to compensate for losses of energy
@ -832,7 +834,7 @@ void ReverbState::updateDelayLine(const ALfloat earlyDelay, const ALfloat lateDe
mEarlyDelayCoeff[i][1] = CalcDecayCoeff(length, decayTime);
length = lateDelay + (LATE_LINE_LENGTHS[i] - LATE_LINE_LENGTHS.front()) /
float{LATE_LINE_LENGTHS.size()} * multiplier;
float{LATE_LINE_LENGTHS_size} * multiplier;
mLateDelayTap[i][1] = mLateFeedTap + float2int(length * frequency);
}
}