My application wants to play some text when it is available, and if there is some music playing in the background I want to lower the voice for the music while my app is playing its text, what I did is:
[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback
withOptions:AVAudioSessionCategoryOptionDuckOthers
error:&err];
[[AVAudioSession sharedInstance] setActive:YES error:&err];
The option AVAudioSessionCategoryOptionDuckOthers will lower the music volume while my app is playing its text.
Then play the text with the speechSynthesizer, after that in:
- (void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didFinishSpeechUtterance:(AVSpeechUtterance *)
utterance I do:
[[AVAudioSession sharedInstance] setActive:NO withFlags:AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation error:nil];
so the music will be back to it original volume.
The problem by setting the session active to NO, I am loosing the volume control (the iPhone hardware volume control the one in the left side of the phone). i.e I can not upper or lower the volume for my app unless there is a text actively playing in my app at the moment I am changing the volume.
Thank you very much, It works if I did this, before I play my text:
[[AVAudioSession sharedInstance] setActive:NO withOptions:0 error:nil];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback
withOptions:AVAudioSessionCategoryOptionDuckOthers
error:nil];
I had to setActive:NO as without it the second time when I play my text the music will be paused!!
And then After I play my text, I do this:
[[AVAudioSession sharedInstance] setActive:NO withOptions:0 error:nil];
[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryAmbient withOptions: 0 error: nil];
[[AVAudioSession sharedInstance] setActive:YES withOptions: 0 error:nil];
Immediately after setting setActive: to NO, set it to YES again! Set the category to Ambient so the background sound can continue playing.
So, before you play:
[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryAmbient
withOptions: AVAudioSessionCategoryOptionDuckOthers
error: nil];
[[AVAudioSession sharedInstance] setActive:YES withOptions: 0 error:nil];
After you play:
[[AVAudioSession sharedInstance] setActive:NO withOptions:0 error:nil];
[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryAmbient
withOptions: 0
error: nil];
[[AVAudioSession sharedInstance] setActive:YES withOptions: 0 error:nil];
Related
The method:
[[AVAudioSession sharedInstance] setActive:NO withOptions:AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation error:nil]
does not work for resuming background music.
My app audio session category is AVAudioSessionCategoryPlayAndRecord.
Who knows what's going on？
In my app ,i play my music in this way :
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
[[AVAudioSession sharedInstance] setActive:YES error:nil];
AVAudioPlayer *pl = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:fileName] error:nil];
[pl play];
Now other music had been interrupt.After my music been played,i resume playback like this:
[[AVAudioSession sharedInstance] setActive:NO withOptions:AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation error:nil];
It works perfect for me, when music played by some media player(as:QQ Player, iPhone's music, etc.);
But it was inefficacy, when the first music played by safari,chrome and so on.
How could i resume palyback?
Sorry if this is a duplicate, but I couldn't find a question similar to this. I have a custom camera/recorder that I made with AVFoundation and I was wondering how to keep the audio running from other apps while recording a video because right now it stops the audio (doesn't even pause it) and then records the video
If I am thinking correctly, could this be solved by adding something similar to this:
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryAmbient error:nil];
Sample Code:
AVAudioSession *session = [AVAudioSession sharedInstance];
session.delegate = self;
NSError *error = nil;
[session setCategory:AVAudioSessionCategoryPlayAndRecord error:&error];
OSStatus propertySetError = 0;
UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_Speaker;
propertySetError = AudioSessionSetProperty (
kAudioSessionProperty_OverrideAudioRoute,
sizeof (audioRouteOverride),
&audioRouteOverride
);
[session setActive:YES error:&error];
This fixed it.
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord
withOptions:AVAudioSessionCategoryOptionDefaultToSpeaker | AVAudioSessionCategoryOptionMixWithOthers
error:nil];
I am implementing Audio Video Call like feature. I am using AVAudioSession for Voice feature. I want to configure the AVAudioSession such that it should work on the receive speaker and loud speaker as well as the headphones.I am using the following initialisation for AVAudioSession:
NSError *err = nil;
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord
withOptions:AVAudioSessionCategoryOptionDefaultToSpeaker error:&err];
[[AVAudioSession sharedInstance] overrideOutputAudioPort:AVAudioSessionPortOverrideSpeaker error:&err];
[[AVAudioSession sharedInstance] setMode:AVAudioSessionModeVideoChat error:&err];
[[AVAudioSession sharedInstance] setActive: YES error: NULL];
The above code works fine for loud speaker and headphones but the voice quality from loud speaker is very low.
I have tried the code below for switching the audio route to receiver speaker. But it doesn't work.
NSError *err = nil;
[[AVAudioSession sharedInstance] overrideOutputAudioPort:AVAudioSessionPortOverrideNone error:&err];
Can somebody please help me with this?
I got similar problem.i solve it by
[[AVAudioSession sharedInstance] overrideOutputAudioPort:AVAudioSessionPortOverrideNone error:nil];
NSArray *outputs =[[[AVAudioSession sharedInstance] currentRoute] outputs];
BOOL haveSpeaker = NO;
for (AVAudioSessionPortDescription *currentPut in outputs) {
if ([currentPut.portType isEqualToString:#"Speaker"]) {
haveSpeaker = YES;
break;
}
}
if (haveSpeaker) {
NSError *error;
[[AVAudioSession sharedInstance]setCategory:AVAudioSessionCategoryRecord error:nil];
[[AVAudioSession sharedInstance]setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
[[AVAudioSession sharedInstance] overrideOutputAudioPort:AVAudioSessionPortOverrideNone error:&error];
[[AVAudioSession sharedInstance]setActive:YES error:nil];
}
In my opinion AVAudioSessionCategoryOptionDefaultNone is not reciver,it's default route. so u hava changed the default route for this mode;
I have set AVAudioSessionCategoryPlayback for my audio file that works perfect plays in background. I want to remove AVAudioSessionCategoryPlayback instance so that i can avoid background play for the some item played by the application player.
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
Once it has to be set. cant be retained.
Is there any property for AVAudioSession setCategory to remove play back and I can further make it possible by setCategory:AVAudioSessionCategoryPlayback
Yes, you can deactivate the audio session by using following code.
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
[[AVAudioSession sharedInstance] setActive: NO error: nil];
and when you want to play the audio again then start the session again by using the code as follows:
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
[[AVAudioSession sharedInstance] setActive: YES error: nil];