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music player widget as a separate module

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minjaesong
2023-12-24 03:13:35 +09:00
parent b5312da2f0
commit c4836a3fe2
24 changed files with 370 additions and 33 deletions
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12
src/net/torvald/terrarum/audio/dsp/Scope.kt
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@@ -12,10 +12,10 @@ import net.torvald.terrarum.ui.Toolkit
import kotlin.math.*
class Scope : TerrarumAudioFilter() {
val backbufL = Array((4096f / AUDIO_BUFFER_SIZE).roundToInt().coerceAtLeast(1)) {
val backbufL = Array((6144f / AUDIO_BUFFER_SIZE).roundToInt().coerceAtLeast(1)) {
FloatArray(AUDIO_BUFFER_SIZE)
}
val backbufR = Array((4096f / AUDIO_BUFFER_SIZE).roundToInt().coerceAtLeast(1)) {
val backbufR = Array((6144f / AUDIO_BUFFER_SIZE).roundToInt().coerceAtLeast(1)) {
FloatArray(AUDIO_BUFFER_SIZE)
}
@@ -64,11 +64,11 @@ class Scope : TerrarumAudioFilter() {
// plot dots
for (i in 0 until TerrarumAudioMixerTrack.AUDIO_BUFFER_SIZE) {
val y0 = inbuf[0][i] * 0.7
val x0 = -inbuf[1][i] * 0.7 // rotate the domain by -90 deg
val y0 = +inbuf[0][i] * 2f
val x0 = -inbuf[1][i] * 2f// rotate the domain by -90 deg
val x = (+x0*sqrt2p -y0*sqrt2p) * 1.414
val y = (-x0*sqrt2p -y0*sqrt2p) * 1.414 // further rotate by -45 deg then flip along the y axis
val x = (+x0*sqrt2p -y0*sqrt2p) * 1.4142
val y = (-x0*sqrt2p -y0*sqrt2p) * 1.4142 // further rotate by -45 deg then flip along the y axis
backbufL[0][i] = x.toFloat()
backbufR[0][i] = y.toFloat()