Split voices by sliding volumes per voices SATB, mixer desktop

composeApp/src/androidMain/kotlin/mg/dot/feufaro/midi/MidiPlayer.kt

@@ -150,6 +150,12 @@ actual fun setVolume(level: Float) {
         return 120f
     }
 
+    actual fun updateVoiceVolume(voiceIndex: Int, newVolume: Float) {
+        if (voiceIndex in 0..3) {
+            //TODO: implements split voices & change volume per voices
+        }
+    }
+
     fun release() {
         mediaPlayer?.release()
         mediaPlayer = null

composeApp/src/commonMain/kotlin/mg/dot/feufaro/midi/MidiPlayer.kt

@@ -19,6 +19,7 @@ expect class FMediaPlayer(filename: String, onFinished: () -> Unit) {
     fun clearLoop()
     fun setTempo(factor: Float)
     fun getCurrentBPM(): Float
+    fun updateVoiceVolume(voiceIndex: Int, newVolume: Float)
 }
 
 /*

composeApp/src/commonMain/kotlin/mg/dot/feufaro/ui/DrawerUI.kt

@@ -1,20 +1,11 @@
 package mg.dot.feufaro.ui
 
 import SharedScreenModel
-import androidx.compose.animation.AnimatedContent
-import androidx.compose.animation.AnimatedVisibility
-import androidx.compose.animation.ExperimentalSharedTransitionApi
-import androidx.compose.animation.fadeIn
-import androidx.compose.animation.fadeOut
-import androidx.compose.animation.scaleIn
-import androidx.compose.animation.scaleOut
-import androidx.compose.animation.slideInVertically
-import androidx.compose.animation.slideOutVertically
+import androidx.compose.animation.*
 import androidx.compose.foundation.*
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.itemsIndexed
-import androidx.compose.foundation.lazy.rememberLazyListState
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material.icons.Icons
@@ -27,20 +18,15 @@ import androidx.compose.ui.draw.alpha
 import androidx.compose.ui.focus.FocusRequester
 import androidx.compose.ui.focus.focusRequester
 import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.graphics.RectangleShape
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
-import androidx.compose.ui.platform.*
-import kotlinx.coroutines.*
-import mg.dot.feufaro.data.DrawerItem
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
 import mg.dot.feufaro.data.getDrawerItems
-import mg.dot.feufaro.getConfigDirectoryPath
-import mg.dot.feufaro.getPlatform
 import mg.dot.feufaro.solfa.Solfa
 import mg.dot.feufaro.viewmodel.SolfaScreenModel
-import java.io.File
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
@@ -266,6 +252,9 @@ LaunchedEffect(isPlay, isPos) {
                                         sharedScreenModel.setVolume(newVolume)
                                         println("Changement volume $newVolume -l $volumelevel")
                                     },
+                                    onVoiceVolumeChange = { index, volume ->
+                                        player?.updateVoiceVolume(index, volume)
+                                    }
                                 )
                             } else {
                                 Text("Sélectionner un morceau")

composeApp/src/commonMain/kotlin/mg/dot/feufaro/ui/MidiControlPanel.kt

@@ -1,13 +1,14 @@
 package mg.dot.feufaro.ui
 
 import androidx.compose.animation.*
-import androidx.compose.animation.core.AnimationSpec
-import androidx.compose.animation.core.ExperimentalAnimationSpecApi
 import androidx.compose.animation.core.LinearEasing
 import androidx.compose.animation.core.tween
+import androidx.compose.foundation.Image
 import androidx.compose.foundation.ScrollState
 import androidx.compose.foundation.background
+import androidx.compose.foundation.border
 import androidx.compose.foundation.clickable
+import androidx.compose.foundation.interaction.MutableInteractionSource
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.shape.RoundedCornerShape
@@ -20,13 +21,20 @@ import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
+import androidx.compose.ui.draw.paint
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.RectangleShape
+import androidx.compose.ui.graphics.TransformOrigin
+import androidx.compose.ui.graphics.graphicsLayer
+import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import feufaro.composeapp.generated.resources.Res
 import feufaro.composeapp.generated.resources.ic_mixer_satb
 import feufaro.composeapp.generated.resources.ic_organ
+import feufaro.composeapp.generated.resources.mixer_bg
+import feufaro.composeapp.generated.resources.mixer_fader
 import kotlinx.coroutines.delay
 import mg.dot.feufaro.getPlatform
 import mg.dot.feufaro.midi.FMediaPlayer
@@ -43,6 +51,7 @@ fun MidiControlPanel(
     onPlayPauseClick: () -> Unit,
     onSeek: (Float) -> Unit,
     onVolumeChange: (Float) -> Unit,
+    onVoiceVolumeChange: (voiceIndex: Int, newVolume: Float) -> Unit,
     mediaPlayer: FMediaPlayer,
     modifier: Modifier = Modifier
 ) {
@@ -56,6 +65,9 @@ fun MidiControlPanel(
     }
 
     val voiceStates = mediaPlayer.getVoiceStates()
+    val sliderVolumes = remember {
+        mutableStateListOf(127f, 127f, 127f, 127f)
+    }
     val labels = listOf("S", "A", "T", "B")
     listOf("Soprano", "Alto", "Ténor", "Basse")
 
@@ -168,11 +180,61 @@ fun MidiControlPanel(
                     enter = fadeIn() + scaleIn() + slideInVertically { it / 2 },
                     exit = fadeOut() + scaleOut() + slideOutVertically { it / 2 }
                 ) {
-                    Row {
-                        Column(
-                            horizontalAlignment = Alignment.CenterHorizontally
-                        ) {
-                            Row(
+                    Row(
+                        modifier = Modifier
+                            .height(100.dp)
+                            .widthIn(max = 250.dp)
+                            .paint(
+                                painter = painterResource(Res.drawable.mixer_bg),
+                                contentScale = ContentScale.FillBounds
+                            )
+                            .padding(start = 0.dp, end = 0.dp)
+                        ,
+                        verticalAlignment = Alignment.CenterVertically,
+                        horizontalArrangement = Arrangement.SpaceEvenly
+                    ) {
+                        for (i in 0 until 4) {
+                            Box(
+                                modifier = Modifier
+                                    .fillMaxHeight()
+                                    .weight(1f),
+                                contentAlignment = Alignment.Center
+                            ) {
+                                Slider(
+                                    value = sliderVolumes[i],
+                                    onValueChange = { newValue ->
+                                        sliderVolumes[i] = newValue
+                                        mediaPlayer.updateVoiceVolume(i, newValue)
+                                    },
+                                    valueRange = 0f..126f,
+                                    modifier = Modifier
+                                        .fillMaxHeight()
+                                        .graphicsLayer {
+                                            rotationZ = -90f
+                                            transformOrigin = TransformOrigin.Center
+                                        }
+                                        .fillMaxWidth(),
+                                    thumb = {
+                                        Image(
+                                            painter = painterResource(Res.drawable.mixer_fader),
+                                            contentDescription = "Fader Thumb",
+                                            modifier = Modifier
+                                                .size(width = 20.dp, height = 20.dp)
+                                                .graphicsLayer {
+                                                    rotationZ = 90f
+                                                },
+                                            contentScale = ContentScale.Fit
+                                        )
+                                    },
+                                    colors = SliderDefaults.colors(
+                                        thumbColor = Color.Transparent,
+                                        activeTrackColor = Color.Transparent,
+                                        inactiveTrackColor = Color.Transparent
+                                    ),
+                                )
+                            }
+                        }
+                            /*Row(
                                 modifier = Modifier.padding(vertical = 8.dp),
                                 horizontalArrangement = Arrangement.spacedBy(4.dp)
                             ) {
@@ -187,8 +249,7 @@ fun MidiControlPanel(
                                         )
                                     )
                                 }
-                            }
-                        }
+                            }*/
                     }
                 }
                 AnimatedVisibility(

composeApp/src/desktopMain/kotlin/mg/dot/feufaro/midi/MidiPlayer.kt

@@ -1,14 +1,6 @@
 package mg.dot.feufaro.midi
 
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.GlobalScope
-import kotlinx.coroutines.Job
-import kotlinx.coroutines.SupervisorJob
-import kotlinx.coroutines.cancel
-import kotlinx.coroutines.delay
-import kotlinx.coroutines.launch
-import mg.dot.feufaro.FileRepository
+import kotlinx.coroutines.*
 import mg.dot.feufaro.getConfigDirectoryPath
 import java.io.ByteArrayInputStream
 import java.io.File
@@ -40,7 +32,7 @@ actual class FMediaPlayer actual constructor(
     private var isLoopingAB: Boolean = false
 
     private val voiceStates = mutableListOf(true, true, true, true)
-
+    private val voiceVolumes = FloatArray(4) { 127f }
     private var currentGlobalVolume: Float = 0.8f
 
     private var currentTempo: Float = 1.0f
@@ -170,23 +162,34 @@ actual class FMediaPlayer actual constructor(
         saveVoiceStates()
         applyVoiceStates()
     }
+    actual fun updateVoiceVolume(voiceIndex: Int, newVolume: Float) {
+        if (voiceIndex in 0..3) {
+            voiceVolumes[voiceIndex] = newVolume
+            applyVoiceStates()
+        }
+    }
 
     private fun applyVoiceStates() {
         try {
             synthetizer?.channels?.let { channels ->
-                for (i in 0 until 4) {
-                    if (i < channels.size) {
-                        val isVoiceActive = voiceStates[i]
-                        val volume = if (voiceStates[i]) 127 else 0
-                        channels[i].controlChange(7, volume)
-                        channels[i].controlChange(11, volume)
-                        if(!isVoiceActive) {
-                            channels[i].controlChange(123, 0)
-                        }
+            for (i in 0 until 4) {
+                if (i < channels.size) {
+                    val volume = voiceVolumes[i].toInt()
+                    val isVoiceActive = voiceStates[i]
+                    val currentVolume = voiceVolumes[i].toInt()
+
+                    if (volume == 0) {
+                        channels[i].controlChange(123, 0)
+                        voiceStates[i] = false
+                    } else {
+                        channels[i].controlChange(7, currentVolume)
+                        channels[i].controlChange(11, currentVolume)
+                        voiceStates[i] = true
                     }
                 }
-                println("STAB màj: $voiceStates")
+            println("SATB màj: $voiceStates, Volumes: ${voiceVolumes[i]}")
             }
+        }
         } catch (e: Exception) { e.printStackTrace() }
     }