WIP: Prevent pausing system audio on app start by configuring AVAudioSession on iOS

bridge/src/fmod_darwin.m

@@ -10,11 +10,33 @@
 
 static NSTimer * resumeTimer = nil;
 
+// Configure the audio session with the appropriate category for iOS
+static void configureAudioSession() {
+    @autoreleasepool {
+        NSError * error;
+
+        // Set the category to AVAudioSessionCategoryAmbient to allow our app's audio
+        // to mix with audio from other apps (like music players)
+        BOOL categorySuccess = [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryAmbient error:&error];
+
+        if (!categorySuccess) {
+            if (error) {
+                LOGW("Cannot set audio session category: %s", [[error localizedDescription] UTF8String]);
+            } else {
+                LOGW("Cannot set audio session category and no error was issued");
+            }
+        }
+    }
+}
+
 // In case it doesn't work from the first try, retry activating the audio session
 // a few times. For example, after dismissing a phone call, [AVAudioSession setActive: error:]
 // errors out from the first try, but works on the second
 static void resumeAudioSession(int retries) {
     @autoreleasepool {
+        // Configure the audio session before activating it
+        configureAudioSession();
+
         NSError * error;
         BOOL success = [[AVAudioSession sharedInstance] setActive:TRUE error: &error];
         if (success) {
@@ -46,6 +68,9 @@ static void resumeAudioSession(int retries) {
 
 void FMODBridge_initIOSInterruptionHandler() {
     @autoreleasepool {
+        // Configure the audio session during initialization
+        configureAudioSession();
+
         [[NSNotificationCenter defaultCenter] addObserverForName:AVAudioSessionInterruptionNotification object:nil queue:nil usingBlock:^(NSNotification *notification) {
             NSUInteger typeValue = [[notification.userInfo valueForKey:AVAudioSessionInterruptionTypeKey] intValue];
 
@@ -65,12 +90,5 @@ void FMODBridge_initIOSInterruptionHandler() {
         }];
     }
 }
-#endif
 
-int FMODBridge_getBundleRoot(lua_State *L) {
-    @autoreleasepool {
-        NSString* path = [[NSBundle mainBundle] bundlePath];
-        lua_pushstring(L, [path UTF8String]);
-    }
-    return 1;
-}
+#endif