AVAudioSession manipulate sound output - ios

Question

I'm using AVSoundSession to configure sound, and AVAudioPlayer to play different sounds.
I searched a lot and couldn't find anything. How can I manipulate output sources?
I need a method in my SoundManager where I could switch output between phone speaker and loudspeaker.
success = [session overrideOutputAudioPort:AVAudioSessionPortOverrideSpeaker
error:&error];
Using this I can route sound to loudspeaker, but there is no method to move it to phone speaker. Can anybody help me with it?

Answer 1

So, I found solution for manipulating with sound output.
You could initialize sound settings with AVAudioSession
Something like this:
session = [AVAudioSession sharedInstance];
BOOL success;
NSError* error;
success = [session setCategory:AVAudioSessionCategoryPlayAndRecord error:&error];
if (!success) NSLog(#"AVAudioSession error setting category:%#",error);
success = [session setMode:AVAudioSessionModeVoiceChat error:&error];
if (!success) NSLog(#"AVAudioSession error setting mode:%#",error);
success = [session overrideOutputAudioPort:AVAudioSessionPortOverrideNone error:&error];
[session setPreferredOutputNumberOfChannels:0 error:nil];
if (!success) NSLog(#"AVAudioSession error overrideOutputAudioPort:%#",error);
success = [session setActive:YES error:&error];
if (!success) NSLog(#"AVAudioSession error activating: %#",error);
else NSLog(#"audioSession active");
With
[session overrideOutputAudioPort:AVAudioSessionPortOverrideNone error:&error];
You set don't override output port. And your app playing with default speaker. As I understand for mode AVAudioSessionModeVoiceChat used phone speaker. It's directly what I need for my SIP caller app.
Then you can override output port with
[session overrideOutputAudioPort:AVAudioSessionPortOverrideSpeaker error:&error];
I do it so:
- (void) loudSpeakerOn:(BOOL)isLoudSpeaker{
[session setActive:NO error:nil];
BOOL success;
NSError* error;
success = [session overrideOutputAudioPort:isLoudSpeaker?AVAudioSessionPortOverrideSpeaker:AVAudioSessionPortOverrideNone error:&error];
if (!success) NSLog(#"AVAudioSession error setting category:%#",error);
[session setActive:YES error:nil];
}