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option for speaker/headphone selection for appropriate panning

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minjaesong
2024-01-14 19:37:41 +09:00
parent 871396cd92
commit e89e32eeea
6 changed files with 30 additions and 6 deletions
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18
src/net/torvald/terrarum/audio/AudioProcessBuf.kt
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@@ -24,9 +24,18 @@ private data class Frac(var nom: Int, val denom: Int) {
*
* Created by minjaesong on 2023-11-17.
*/
class AudioProcessBuf(inputSamplingRate: Int, val audioReadFun: (ByteArray) -> Int?, val onAudioFinished: () -> Unit) {
class AudioProcessBuf(val inputSamplingRate: Int, val audioReadFun: (ByteArray) -> Int?, val onAudioFinished: () -> Unit) {
private val doResample = inputSamplingRate != SAMPLING_RATE
var playbackSpeed = 1f
set(value) {
field = value.coerceIn(0.5f, 2f)
}
private val internalSamplingRate
get() = inputSamplingRate * playbackSpeed
private val doResample
get() = (internalSamplingRate - SAMPLING_RATE).absoluteValue >= 0.5f
companion object {
private val epsilon: Double = Epsilon.E
@@ -62,7 +71,7 @@ class AudioProcessBuf(inputSamplingRate: Int, val audioReadFun: (ByteArray) -> I
arrayOf(48000,44100,32768,32000,24000,22050,16384,16000,12000,11025,8192,8000).forEachIndexed { ri, r ->
arrayOf(128,256,512,1024,2048).forEachIndexed { bi, b ->
bufLut[b to r] = bl[bi * 12 + ri]
bufLut[b to r] = bl[bi * 12 + ri] * 2
}
}
}
@@ -70,7 +79,8 @@ class AudioProcessBuf(inputSamplingRate: Int, val audioReadFun: (ByteArray) -> I
private fun getOptimalBufferSize(rate: Int) = bufLut[BS to rate]!!
}
private val q = inputSamplingRate.toDouble() / SAMPLING_RATE // <= 1.0
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 internalBufferSize = getOptimalBufferSize(inputSamplingRate)// fetchSize * 3