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bitcrusher

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minjaesong
2023-11-23 20:10:36 +09:00
parent c8a891c164
commit e0257dfe3d
1 changed files with 14 additions and 0 deletions
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14
src/net/torvald/terrarum/audio/TerrarumAudioFilter.kt
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@@ -5,6 +5,7 @@ import com.jme3.math.FastMath.sin
import net.torvald.terrarum.audio.AudioMixer.SPEED_OF_SOUND import net.torvald.terrarum.audio.AudioMixer.SPEED_OF_SOUND
import net.torvald.terrarum.audio.TerrarumAudioMixerTrack.Companion.BUFFER_SIZE import net.torvald.terrarum.audio.TerrarumAudioMixerTrack.Companion.BUFFER_SIZE
import net.torvald.terrarum.audio.TerrarumAudioMixerTrack.Companion.SAMPLING_RATEF import net.torvald.terrarum.audio.TerrarumAudioMixerTrack.Companion.SAMPLING_RATEF
import net.torvald.terrarum.roundToFloat
import kotlin.math.absoluteValue import kotlin.math.absoluteValue
import kotlin.math.roundToInt import kotlin.math.roundToInt
import kotlin.math.tanh import kotlin.math.tanh
@@ -235,3 +236,16 @@ class BinoPan(var pan: Float, var earDist: Float = 0.18f): TerrarumAudioFilter()
} }
} }
} }
class Bitcrush(var steps: Int, var inputGain: Float = 1f): TerrarumAudioFilter() {
override fun thru(inbuf0: List<FloatArray>, inbuf1: List<FloatArray>, outbuf0: List<FloatArray>, outbuf1: List<FloatArray>) {
for (ch in 0 until outbuf1.size) {
for (i in 0 until BUFFER_SIZE / 4) {
val inn = ((inbuf1[ch][i] * inputGain).coerceIn(-1f, 1f) + 1f) / 2f // 0f..1f
val stepped = (inn * (steps - 1)).roundToFloat() / (steps - 1)
val out = (stepped * 2f) - 1f // -1f..1f
outbuf1[ch][i] = out
}
}
}
}