Move audio source value

The MediaRecorder constant should not belong to the AudioSource enum.

This will allow to add a new AudioSource which has no meaningful
MediaRecorder audio source value.

PR Genymobile#5102 <Genymobile#5102>

server/src/main/java/com/genymobile/scrcpy/audio/AudioDirectCapture.java

@@ -11,6 +11,7 @@
 import android.content.Intent;
 import android.media.AudioRecord;
 import android.media.MediaCodec;
+import android.media.MediaRecorder;
 import android.os.Build;
 import android.os.SystemClock;
 
@@ -30,7 +31,18 @@ public class AudioDirectCapture implements AudioCapture {
     private AudioRecordReader reader;
 
     public AudioDirectCapture(AudioSource audioSource) {
-        this.audioSource = audioSource.value();
+        this.audioSource = getAudioSourceValue(audioSource);
+    }
+
+    private static int getAudioSourceValue(AudioSource audioSource) {
+        switch (audioSource) {
+            case OUTPUT:
+                return MediaRecorder.AudioSource.REMOTE_SUBMIX;
+            case MIC:
+                return MediaRecorder.AudioSource.MIC;
+            default:
+                throw new IllegalArgumentException("Unsupported audio source: " + audioSource);
+        }
     }
 
     @TargetApi(Build.VERSION_CODES.M)

server/src/main/java/com/genymobile/scrcpy/audio/AudioSource.java

@@ -1,21 +1,13 @@
 package com.genymobile.scrcpy.audio;
 
-import android.media.MediaRecorder;
-
 public enum AudioSource {
-    OUTPUT("output", MediaRecorder.AudioSource.REMOTE_SUBMIX),
-    MIC("mic", MediaRecorder.AudioSource.MIC);
+    OUTPUT("output"),
+    MIC("mic");
 
     private final String name;
-    private final int value;
 
-    AudioSource(String name, int value) {
+    AudioSource(String name) {
         this.name = name;
-        this.value = value;
-    }
-
-    int value() {
-        return value;
     }
 
     public static AudioSource findByName(String name) {