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sound engine is no longer a singleton

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minjaesong
2024-01-16 02:50:47 +09:00
parent 350e205028
commit 755ced9ea4
30 changed files with 275 additions and 159 deletions
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27
src/net/torvald/terrarum/audio/AudioProcessBuf.kt
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@@ -1,7 +1,7 @@
package net.torvald.terrarum.audio
import com.jme3.math.FastMath
import net.torvald.terrarum.audio.TerrarumAudioMixerTrack.Companion.AUDIO_BUFFER_SIZE
import net.torvald.terrarum.App
import net.torvald.terrarum.App.printdbg
import net.torvald.terrarum.audio.TerrarumAudioMixerTrack.Companion.SAMPLING_RATE
import net.torvald.terrarum.ceilToInt
import net.torvald.terrarum.floorToInt
@@ -54,7 +54,6 @@ class AudioProcessBuf(val inputSamplingRate: Int, val audioReadFun: (ByteArray)
}
}
private val BS = AUDIO_BUFFER_SIZE
private val MP3_CHUNK_SIZE = 1152 // 1152 for 32k-48k, 576 for 16k-24k, 384 for 8k-12k
@@ -76,13 +75,13 @@ class AudioProcessBuf(val inputSamplingRate: Int, val audioReadFun: (ByteArray)
}
}
private fun getOptimalBufferSize(rate: Int) = bufLut[BS to rate]!!
private fun getOptimalBufferSize(rate: Int) = bufLut[App.audioBufferSize to rate]!!
}
private val q
get() = internalSamplingRate.toDouble() / SAMPLING_RATE // <= 1.0
private val fetchSize = (BS.toFloat() / MP3_CHUNK_SIZE).ceilToInt() * MP3_CHUNK_SIZE // fetchSize is always multiple of MP3_CHUNK_SIZE, even if the audio is NOT MP3
private val fetchSize = (App.audioBufferSize.toFloat() / MP3_CHUNK_SIZE).ceilToInt() * MP3_CHUNK_SIZE // fetchSize is always multiple of MP3_CHUNK_SIZE, even if the audio is NOT MP3
private val internalBufferSize = getOptimalBufferSize(inputSamplingRate)// fetchSize * 3
private val PADSIZE = TAPS + 1
@@ -120,13 +119,17 @@ class AudioProcessBuf(val inputSamplingRate: Int, val audioReadFun: (ByteArray)
private val foutR = FloatArray(internalBufferSize) // 640 for (44100, 48000), 512 for (48000, 48000) with BUFFER_SIZE = 512 * 4
private val readBuf = ByteArray(fetchSize * 4)
init {
printdbg(this, "App.audioMixerBufferSize=${App.audioBufferSize}")
}
private fun shift(array: FloatArray, size: Int) {
System.arraycopy(array, size, array, 0, array.size - size)
for (i in array.size - size until array.size) { array[i] = 0f }
}
fun fetchBytes() {
val readCount = if (validSamplesInBuf < BS) fetchSize else 0
val readCount = if (validSamplesInBuf < App.audioBufferSize) fetchSize else 0
val writeCount = (readCount / q).roundToInt()
fun getFromReadBuf(i: Int, bytesRead: Int) = if (i < bytesRead) readBuf[i].toUint() else 0
@@ -187,17 +190,17 @@ class AudioProcessBuf(val inputSamplingRate: Int, val audioReadFun: (ByteArray)
fun getLR(volume: Double): Pair<FloatArray, FloatArray> {
// copy into the out
val outL = FloatArray(BS) { (foutL[it] * volume).toFloat() }
val outR = FloatArray(BS) { (foutR[it] * volume).toFloat() }
val outL = FloatArray(App.audioBufferSize) { (foutL[it] * volume).toFloat() }
val outR = FloatArray(App.audioBufferSize) { (foutR[it] * volume).toFloat() }
// shift bytes in the fout
System.arraycopy(foutL, BS, foutL, 0, validSamplesInBuf - BS)
System.arraycopy(foutR, BS, foutR, 0, validSamplesInBuf - BS)
for (i in validSamplesInBuf until BS) {
System.arraycopy(foutL, App.audioBufferSize, foutL, 0, validSamplesInBuf - App.audioBufferSize)
System.arraycopy(foutR, App.audioBufferSize, foutR, 0, validSamplesInBuf - App.audioBufferSize)
for (i in validSamplesInBuf until App.audioBufferSize) {
foutL[i] = 0f
foutR[i] = 0f
}
// decrement necessary variables
validSamplesInBuf -= BS
validSamplesInBuf -= App.audioBufferSize
return outL to outR
}