no more sound after phone call interruption - SimpleAudioEngine

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no more sound after phone call interruption - SimpleAudioEngine

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Started 1 year ago by taber
Latest reply from Steve Oldmeadow

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KosmoMike
Member

@Steve Oldmeadow: - just checked latest version of CocosDension from github on my iPad with 4.2GM - it works fine, music is resumed, and also effects (after couple of seconds). Thanks for update.

Regarding this code:
[[CDAudioManager sharedManager] setResignBehavior:kAMRBStopPlay autoHandle:YES];
Adding it to code doesn't change resuming on iPad, but it change behavior on iPhone 3G with iOS 3.0 - music is not resumed, only effects. Also disabling and resuming app on 3G doesn't generate any CDLogs

Posted 1 year ago #
Steve Oldmeadow
Administrator

, but it change behavior on iPhone 3G with iOS 3.0 - music is not resumed, only effects

I've had reports of a bug in the 3.0 OS, see here:
http://www.cocos2d-iphone.org/forum/topic/7182

If the OS incorrectly reports whether other audio is playing there is little I can do. I test on 3.1.3 and it works fine there.

Posted 1 year ago #
v3nom
Member
Hi:

I have the same problem that this topic treats. I'm using Cocos2D 0.95 and the clases of CocosDenshion located here: https://github.com/cocos2d/cocos2d-iphone/tree/develop/CocosDenshion/CocosDenshion/

In the applicationDidFinishLaunching:(UIApplication*)application event I've this mode of the engine to allow my game sounds and the iPod sounds to play at the same time:
```
[[CDAudioManager sharedManager] setMode:kAMM_PlayAndRecord];
```
The point is that if I push the Home button then the sound in my game are gone.
Thanks for any help you can give and sorry if I'm doing something wrong.

Bye.
Posted 1 year ago #
Steve Oldmeadow
Administrator
@v3nom - PlayAndRecord doesn't allow iPod sounds to play, it does the complete opposite. You should only use PlayAndRecord if you are working on an app the records audio and plays it back e.g a Talking Carl type app.

These are the modes:
```
kAMM_FxOnly,					//!Other apps will be able to play audio
kAMM_FxPlusMusic,				//!Only this app will play audio
kAMM_FxPlusMusicIfNoOtherAudio,	//!If another app is playing audio at start up then allow it to continue and don't play music
kAMM_MediaPlayback,			//!This app takes over audio e.g music player app
kAMM_PlayAndRecord				//!App takes over audio and has input and output
```
If you want your game sounds and the iPod to co-exist then use kAMM_FxOnly. However, that is just setting the audio manager mode it has nothing to do with resuming sound after an interruption. If you want CocosDenshion to handle that for you then you need to set up a resign handler. The most common usage is this:
```
[[CDAudioManager sharedManager] setResignBehavior:kAMRBStopPlay autoHandle:YES];
```
Posted 1 year ago #
v3nom
Member
@Steve Oldmeadow Thanks for your answer.

First, about the kAMM_PlayAndRecord it was weird for me too. I went to the CDAudioManager implementation and tried ALL the modes and the only one that allow the iPod music coexist with my game sounds was that mode, it was totally the opposite to what the comments of the modes said as you mentioned in your post, but for some strange reason it works only that way.

Now, for the other point. I've inserted this line of code at the end of the applicationDidFinishLaunching:(UIApplication*)application so it look like this at the end:
```
// Removes the startup flicker
	[self removeStartupFlicker];

	//Para reproducir el audio del juego junto con cualquier aplicación de audio que se esté usando en el dispositivo
	[[CDAudioManager sharedManager] setMode:kAMM_PlayAndRecord];
	//Handler para que la música se resuma automáticamente después de una interrupción de la app
	[[CDAudioManager sharedManager] setResignBehavior:kAMRBStopPlay autoHandle:YES];

	// Run the intro Scene
	[[CCDirector sharedDirector] runWithScene: [GNLoadingScene sceneWithTargetScene:TargetSceneMainMenu]];
```
It still doesn't work. I debugged the code and when I press the HOME button (to resume the app) the notification event inside CDAudioManager is correctly called:
```
- (void) applicationDidBecomeActive {
```
And it reaches this lines, which is where the sound should be resumed:
```
if (audioSource->systemPaused) {
							[audioSource resume];
							audioSource->systemPaused = NO;
						}
```
But nothing happens!

Thanks for any additional help you can give me, I don't know what's wrong.
Posted 1 year ago #
Steve Oldmeadow
Administrator

@v3mon - if that is the case then there is something broken either with your device or your app. PlayAndRecord absolutely should not allow the iPod music to co-exist.

Try one of the CocosDenshion demos like FadeToGrey. If you have your iPod music playing before you start the demo then the iPod music should continue playing but you can trigger sound effects. If the demo works then you know it is something wrong with your app - most likely you have corrupted memory.

If the demo doesn't work then there is something wrong on your device. Is it jailbroken? What device? What OS version?

Posted 1 year ago #
v3nom
Member
@Steve Oldmeadow Ok, here I am again. My iPod is a Third Gen without Jailbreak and with iOS 4.2.1

I tried like for one hour and a half to get the FadeToGray demo runing, but it was imposible for me. For any "nub" reason (I guess) I could'n select the active target or active executable to FadeToGray to install it in my device. ¡IMPOSIBLE!

Then I accepted my fail with the test and tried to test the memory leaks as you said. I had some leaks that I corrected but there is one related to CDAudioManager that I don't know why is happening.

The leak is:
- Leaked Object: GeneralBLock-512
- Responsible Library: AudioToolbox
- Responsible Frame: AU3DMixerEmbeddedInputElement::
If I look the the call stack I see that the leak is generated in this line:
```
[[CDAudioManager sharedManager] setMode:kAMM_FxOnly];
```
I don't know if this has anything to do with the problem of the sound not resuming after pressing the home button, but I would like to resolve this two problems. It's necessary.

Thanks for the help again and again!
Posted 1 year ago #
finder39
Member

ya i saw that leak too yesterday, only one my app has, when i was looking into my memory management

Posted 1 year ago #
Steve Oldmeadow
Administrator
@v3nom - the fact that the demo is not working is a concern. You need to get one of the demos running to determine whether the problem is with your environment or your app. Can you generate a new project? If so just do that and copy the code and resources from the FadeToGrey demo to the new project.

Also memory corruption is totally different to memory leaks, with memory corruption you are writing to memory that you shouldn't be. The symptoms depend on what was in the memory that got overwritten. This code will corrupt memory, it doesn't get picked up by the analyser and the compiler doesn't generate a warning. If you have any code that looks like this i.e. dynamically allocated arrays then examine it very carefully.
```
float* myNiceFloatArray;
int myFloatTotal = 100;
myNiceFloatArray = (float*)malloc(myFloatTotal*sizeof(float));
for (int i=0; i <= myFloatTotal; i++) {
	myNiceFloatArray[i] = (float)(i/100.0f);
	NSLog(@"Percentage multiplier for %i = %0.2f", i,myNiceFloatArray[i]);
}
```
As for that memory leak, it is in Apple's code and is probably a false positive anyway. The only way to eliminate that would be not to use OpenAL. The only iOS sound engine I am aware of that doesn't use OpenAL is FMOD.
Posted 1 year ago #

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