fix disableAutoWhiteBalance and add SilenceAudioSource

Author: pedroSG94

encoder/src/main/java/com/pedro/encoder/input/sources/audio/SilenceAudioSource.kt

@@ -0,0 +1,72 @@
+/*
+ *
+ *  * Copyright (C) 2024 pedroSG94.
+ *  *
+ *  * Licensed under the Apache License, Version 2.0 (the "License");
+ *  * you may not use this file except in compliance with the License.
+ *  * You may obtain a copy of the License at
+ *  *
+ *  * http://www.apache.org/licenses/LICENSE-2.0
+ *  *
+ *  * Unless required by applicable law or agreed to in writing, software
+ *  * distributed under the License is distributed on an "AS IS" BASIS,
+ *  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  * See the License for the specific language governing permissions and
+ *  * limitations under the License.
+ *
+ */
+
+package com.pedro.encoder.input.sources.audio
+
+import com.pedro.common.TimeUtils
+import com.pedro.encoder.Frame
+import com.pedro.encoder.audio.AudioEncoder
+import com.pedro.encoder.input.audio.GetMicrophoneData
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.cancelAndJoin
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.runBlocking
+
+/**
+ * Created by pedro on 25/7/25.
+ */
+class SilenceAudioSource: AudioSource(), GetMicrophoneData {
+
+  private var running = false
+  private var job: Job? = null
+  private var sleepTime = 0L
+  private val buffer = ByteArray(AudioEncoder.inputSize / 4)
+
+  override fun create(sampleRate: Int, isStereo: Boolean, echoCanceler: Boolean, noiseSuppressor: Boolean): Boolean {
+    val channels = if (isStereo) 2 else 1
+    sleepTime = ((buffer.size.toDouble() / (sampleRate * channels * 2L)) * 1000000L).toLong()
+    return true
+  }
+
+  override fun start(getMicrophoneData: GetMicrophoneData) {
+    this.getMicrophoneData = getMicrophoneData
+    running = true
+    job = CoroutineScope(Dispatchers.IO).launch {
+      while (running) {
+        getMicrophoneData.inputPCMData(Frame(buffer, 0, buffer.size, TimeUtils.getCurrentTimeMicro()))
+        delay(sleepTime)
+      }
+    }
+  }
+
+  override fun stop() {
+    running = false
+    runBlocking { job?.cancelAndJoin() }
+  }
+
+  override fun isRunning(): Boolean = running
+
+  override fun release() {}
+
+  override fun inputPCMData(frame: Frame) {
+    getMicrophoneData?.inputPCMData(frame)
+  }
+}

encoder/src/main/java/com/pedro/encoder/input/video/Camera2ApiManager.kt

@@ -335,7 +335,7 @@ class Camera2ApiManager(context: Context) : CameraDevice.StateCallback() {
         if (!modes.contains(CaptureRequest.CONTROL_AWB_MODE_OFF)) return
         builderInputSurface.set(CaptureRequest.CONTROL_AWB_MODE, CaptureRequest.CONTROL_AWB_MODE_OFF)
         applyRequest(builderInputSurface)
-        isAutoExposureEnabled = false
+        isAutoWhiteBalanceEnabled = false
     }
 
     fun getAutoWhiteBalanceModesAvailable(): List<Int> {