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Remember voice states SATB

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hasina 2026-01-19 14:53:39 +03:00 • committed by hasinarak3@gmail.com
parent 4e8866a4e7
commit 64c94b4064
1 changed files with 21 additions and 24 deletions
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45
composeApp/src/desktopMain/kotlin/mg/dot/feufaro/midi/MidiPlayer.kt
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@ -6,15 +6,14 @@ import kotlinx.coroutines.launch
import mg.dot.feufaro.FileRepository
import java.io.ByteArrayInputStream
import java.io.File
import java.util.prefs.Preferences
import javax.sound.midi.MidiSystem
import javax.sound.midi.Sequencer
import javax.sound.midi.Synthesizer //import javax.sound.midi.ShortMessage
//import javax.sound.midi.Synthesizer
import javax.sound.midi.Synthesizer
import javax.sound.sampled.AudioFormat
import javax.sound.sampled.AudioSystem
import javax.sound.sampled.FloatControl
//private var sequencer: javax.sound.midi.Sequencer?= null
actual class MediaPlayer actual constructor(
private val filename: String,
private val onFinished: () -> Unit
@ -27,6 +26,7 @@ actual class MediaPlayer actual constructor(
null
}
private val prefs = Preferences.userRoot().node("mg.dot.feufaro")
private var synthetizer = MidiSystem.getSynthesizer() as Synthesizer?
private var pointA: Long = -1L
@ -53,6 +53,7 @@ actual class MediaPlayer actual constructor(
val file = File(filename)
if (file.exists()){
sequencer?.sequence = MidiSystem.getSequence(file)
loadVoiceStates()
applyVoiceStates()
sequencer?.addMetaEventListener { meta ->
if(meta.type == 47){
@ -103,16 +104,6 @@ actual class MediaPlayer actual constructor(
channel?.controlChange(7, volumeInt)
}
}
/*val logVolume = if (level > 0 ){
(Math.log10(level.toDouble() * 9 + 1) / Math.log10(10.0)).toFloat()
} else {
0f
}
val volumeInt = (logVolume * 127).toInt().coerceIn(0, 127)
synthetizer?.channels?.forEach { it?.controlChange(7, volumeInt) }
synthetizer?.channels?.forEach { it?.controlChange(11, volumeInt) }
*/
val mixer = AudioSystem.getMixer(null)
val lines = mixer.sourceLines
for (line in lines) {
@ -124,14 +115,6 @@ actual class MediaPlayer actual constructor(
}
}
// val msg = ShortMessage()
// val receiver = sequencer?.receiver
// for (i in 0 until 16) {
// val msg = ShortMessage()
// msg.setMessage(ShortMessage.CONTROL_CHANGE, i, 7, volumeInt)
// receiver?.send(msg, -1)
// }
} catch (e: Exception){
e.printStackTrace()
}
@ -170,6 +153,7 @@ actual class MediaPlayer actual constructor(
actual fun toggleVoice(index: Int) {
voiceStates[index] = !voiceStates[index]
saveVoiceStates()
applyVoiceStates()
}
@ -204,11 +188,8 @@ actual class MediaPlayer actual constructor(
}
}
actual fun getCurrentBPM(): Float {
// return sequencer?.tempoInBPM?.toInt() ?: 0
val currentFactor = sequencer?.tempoFactor ?: 1.0f
// val currentBPM = sequencer?.tempoInBPM ?: 120.0f
val currentBPM = (120f * currentFactor)
// println("202: ${sequencer?.tempoInBPM} ${sequencer?.tempoFactor} ${sequencer?.tempoInMPQ}")
return currentBPM
}
@ -231,4 +212,20 @@ actual class MediaPlayer actual constructor(
e.printStackTrace()
}
}
private fun saveVoiceStates() {
val data = voiceStates.joinToString(",")
prefs.put("voice_states", data)
}
private fun loadVoiceStates() {
val defaultValue = "true,true,true,true"
val savedData = prefs.get("voice_states", defaultValue)
val states = savedData.split(",").map { it.toBoolean() }
for (i in 0 until 4) {
if (i < states.size) voiceStates[i] = states[i]
}
}
}