audio main app gui

Universite-Gustave-Eiffel · Nov 15, 2023 · 51df867 · 51df867
1 parent 921bcfb
commit 51df867
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Showing 4 changed files with 41 additions and 16 deletions.
diff --git a/NoiseCapture/src/androidMain/kotlin/org/noise_planet/noisecapture/AndroidAudioSource.kt b/NoiseCapture/src/androidMain/kotlin/org/noise_planet/noisecapture/AndroidAudioSource.kt
@@ -4,10 +4,15 @@ import android.annotation.SuppressLint
 import android.media.AudioFormat
 import android.media.AudioRecord
 import android.media.MediaRecorder
+import android.os.Process
+import java.util.Arrays
+import java.util.concurrent.atomic.AtomicBoolean
 
-class AndroidAudioSource : AudioSource {
+class AndroidAudioSource : AudioSource, Runnable {
     private lateinit var audioRecord: AudioRecord
-
+    private lateinit var callback: AudioCallback
+    private var bufferSize = -1
+    private val recording = AtomicBoolean(false)
     @SuppressLint("MissingPermission")
     override fun setup(
         sampleRate: Int,
@@ -23,12 +28,39 @@ class AndroidAudioSource : AudioSource {
             minimalBufferSize > bufferSize ->
                 return AudioSource.InitializeErrorCode.INITIALIZE_WRONG_BUFFER_SIZE
         }
+        this.bufferSize = bufferSize
         audioRecord = AudioRecord(MediaRecorder.AudioSource.VOICE_RECOGNITION, sampleRate, channel, encoding, bufferSize)
+        this.callback = callback
         return AudioSource.InitializeErrorCode.INITIALIZE_OK
     }
 
+    override fun run() {
+        recording.set(true)
+        try {
+            Process.setThreadPriority(Process.THREAD_PRIORITY_URGENT_AUDIO)
+        } catch (ex: IllegalArgumentException) {
+            // Ignore
+        } catch (ex: SecurityException) {
+            // Ignore
+        }
+        audioRecord.startRecording()
+        var buffer = FloatArray(bufferSize / 4)
+        while(recording.get()) {
+            val read: Int = audioRecord.read(
+                buffer, 0, buffer.size,
+                AudioRecord.READ_BLOCKING
+            )
+            if (read < buffer.size) {
+                buffer = buffer.copyOfRange(0, read)
+            }
+            callback(buffer)
+        }
+    }
+
+
     override fun release() {
-        TODO("Not yet implemented")
+        audioRecord.stop()
+        recording.set(false)
     }
 
     override fun getMicrophoneLocation(): AudioSource.MicrophoneLocation {

diff --git a/NoiseCapture/src/commonMain/kotlin/org/noise_planet/noisecapture/App.kt b/NoiseCapture/src/commonMain/kotlin/org/noise_planet/noisecapture/App.kt
@@ -22,20 +22,16 @@ import org.jetbrains.compose.resources.painterResource
 fun App() {
     MaterialTheme {
         var greetingText by remember { mutableStateOf("Hello World!") }
-        var showImage by remember { mutableStateOf(false) }
+        val audioSource = CreateAudioSource()
         Column(Modifier.fillMaxWidth(), horizontalAlignment = Alignment.CenterHorizontally) {
             Button(onClick = {
                 greetingText = "Compose: ${Greeting().greet()}"
-                showImage = !showImage
+                println(audioSource.setup(48000, 8192, callback = { samples ->
+                     println(samples.sum())
+                }))
             }) {
                 Text(greetingText)
             }
-            AnimatedVisibility(showImage) {
-                Image(
-                    painterResource("compose-multiplatform.xml"),
-                    null
-                )
-            }
         }
     }
 }
diff --git a/NoiseCapture/src/commonMain/kotlin/org/noise_planet/noisecapture/AudioCallback.kt b/NoiseCapture/src/commonMain/kotlin/org/noise_planet/noisecapture/AudioCallback.kt
diff --git a/NoiseCapture/src/commonMain/kotlin/org/noise_planet/noisecapture/AudioSource.kt b/NoiseCapture/src/commonMain/kotlin/org/noise_planet/noisecapture/AudioSource.kt
@@ -1,5 +1,7 @@
 package org.noise_planet.noisecapture
 
+typealias AudioCallback = (samples: FloatArray) -> Unit
+
 /**
  * Common interface to access Audio samples from device microphone
  * As each device