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mixer: compression indicator

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This commit is contained in:
minjaesong
2023-11-22 23:22:45 +09:00
parent 179e10f4a4
commit 42e189582e
2 changed files with 34 additions and 8 deletions
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14
src/net/torvald/terrarum/audio/TerrarumAudioFilter.kt
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@@ -3,6 +3,7 @@ package net.torvald.terrarum.audio
import com.jme3.math.FastMath
import net.torvald.terrarum.audio.TerrarumAudioMixerTrack.Companion.BUFFER_SIZE
import net.torvald.terrarum.modulebasegame.ui.abs
import kotlin.math.absoluteValue
import kotlin.math.tanh
abstract class TerrarumAudioFilter {
@@ -27,13 +28,24 @@ object NullFilter : TerrarumAudioFilter() {
}
object SoftLim : TerrarumAudioFilter() {
var downForce = 1.0f; private set
override fun thru(inbuf0: List<FloatArray>, inbuf1: List<FloatArray>, outbuf0: List<FloatArray>, outbuf1: List<FloatArray>) {
downForce = 1.0f
for (ch in inbuf1.indices) {
val inn = inbuf1[ch]
val out = outbuf1[ch]
for (i in inn.indices) {
out[i] = tanh(inn[i])
val u = inn[i]
val v = tanh(u)
val diff = (v.absoluteValue / u.absoluteValue)
out[i] = v
if (!diff.isNaN()) {
downForce = minOf(downForce, diff)
}
}
}
}