Initial update to try and fix #1

Client/controllers/audioController.js

@@ -0,0 +1,58 @@
+// Config
+const { getDeviceID } = require('../utilities/configHandler.js');
+// Modules
+const alsaInstance = require('alsa-capture');
+const { returnAlsaDeviceObject } = require("../utilities/executeConsoleCommands.js");
+// Debug
+const { DebugBuilder } = require("../utilities/debugBuilder.js");
+// Global Vars
+const log = new DebugBuilder("client-bot", "audioController");
+
+/**
+ * Checks to make sure the selected audio device is available and returns the device object (PortAudio Device Info)
+ * At least one option must be supplied, it will prefer ID to device name
+ *
+ * @param deviceName The name of the device being queried
+ * @param deviceId The ID of the device being queried
+ * @returns {unknown}
+ */
+exports.confirmAudioDevice = async function confirmAudioDevice({deviceName = undefined, deviceId = undefined}){
+    const deviceList = await getAudioDevices();
+    if (!deviceName && !deviceId) throw new Error("No device given");
+    if (deviceId) return deviceList.find(device => device.id === deviceId);
+    if (deviceName) return deviceList.find(device => device.name === deviceName);
+}
+
+/**
+ * Return a list of the audio devices connected with input channels
+ *
+ * @returns {unknown[]}
+ */
+exports.getAudioDevices = async function getAudioDevices(){
+    // Exec output contains both stderr and stdout outputs    
+    const deviceList = await returnAlsaDeviceObject();
+    log.DEBUG("Device list: ", deviceList);
+
+    return deviceList;
+}
+
+/**
+ * Create and return the audio instance from the saved settings
+ * TODO Allow the client to save and load these settings dynamically
+ *
+ * @returns new portAudio.AudioIO
+ */
+exports.createAudioInstance = async function createAudioInstance() {
+    const selectedDevice = await confirmAudioDevice({deviceId: getDeviceID()});//{deviceName: "VoiceMeeter VAIO3 Output (VB-Au"});
+    log.DEBUG("Device selected from config: ", selectedDevice);
+    // Create an instance of AudioIO with outOptions (defaults are as below), which will return a WritableStream
+    return new alsaInstance({        
+        channels: 2,
+        format: "S16_BE",
+        rate: 48000,
+        device: selectedDevice.name ?? "default",  // Use -1 or omit the deviceId to select the default device
+        periodSize: 100,  //(48000 / 1000) * 20, //(48000 * 16 * 2) / 1000 * 20 // (48000 * (16 / 8) * 2) / 60 / 1000 * 20  //0.025 * 48000 / 2
+        periodTime: undefined,
+//        highwaterMark: 3840
+    });
+}