Issue w/ CocosDension & MPMoviePlayerController

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Issue w/ CocosDension & MPMoviePlayerController

(13 posts) (4 voices)

Started 2 years ago by tehsuck
Latest reply from Steve Oldmeadow

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tehsuck
Member

We're using the SimpleAudioEngine - playing background sounds + effect sounds no problem. When we play a video using MPMoviePlayerController, we currently pause the background audio, and restart when it's done. The problem we're having is that effect sounds no longer work. (yet the background comes back fine?) We've confirmed that if we don't play a movie using the MPMoviePlayerController - it all works fine.

It all seems to work fine (even if the movie is played) in the Simulator.

We've tried it on 2 iPhones and an iPod Touch with the same results.

Any ideas on this?

We're using the latest RC of 0.8

Many thanks!

-chief

Posted 2 years ago #
Steve Oldmeadow
Administrator

Andy Fitter solved this problem back when we were on the Google forum:

http://groups.google.com/group/cocos2d-iphone-discuss/browse_frm/thread/734ba2cb323fdb6f/d573795a4fda41c9?lnk=gst&q=movie#d573795a4fda41c9

the problem is with OpenAL, you need to interrupt the OpenAL session before playing the movie and then resume it when the movie finishes.

The bad news is there is no easy way to do this with SimpleAudioEngine. You could either move to using CDAudioManager or roll your own version of SimpleAudioEngine to add methods to do what is required. Basically just call audioSessionInterrupted on the soundEngine property of the audio manager before playing the video and then audioSessionResumed when the video is finished.

Posted 2 years ago #
fmdevelopr
Member
Steve,

We are using the CDAudioManager ([CDAudioManager initAsynchronously: kAudioManagerFxPlusMusic ...), but it doesn't work as expected (OpenAL playing sound afterwards). The 'managerInterruptionCallback' is only called on BeginInterruption (when the movie starts), but not on EndInterruption. Is there anything special we would need to do ?
If called manually ([[CDAudioManager sharedManager] audioSessionResumed]) it complains about error a003

We have registered a notifcation method, which is indeed called; the reason for waiting is to make sure the black screen is away before we resume the normal mode.
```
 
- (void) movieDidFinish: (NSNotification*)notifcation { 
	[[NSNotificationCenter defaultCenter] removeObserver:self name:@"MPMoviePlayerPlaybackDidFinishNotification" object:nil]; 
	MPMoviePlayerController* mpc = [notifcation object]; 
	[mpc stop]; 
	[mpc release]; 
	// wait for some time.. 
	[self performSelector:@selector(resumeAfterMovie) withObject:nil afterDelay:2.0]; 
} 
```
#edit: We are using 3.1 beta 3
Posted 2 years ago #
Steve Oldmeadow
Administrator

My understanding was you had to manually call the interruption method before the movie and then manually call the resume method after the movie, it was not an automatic thing. Andy got it working, maybe you could e-mail him or he will see this.

Posted 2 years ago #
fmdevelopr
Member

I can answer myself :-)

At the beginning, we were calling both [[CDAudioManager sharedManager] audioSessionInterrupted] and [[CDAudioManager sharedManager] audioSessionResumed] and this didnt work. Just call in the observer manually [[CDAudioManager sharedManager] audioSessionResumed] and everything is fine..

Sorry for annoyment, thanks

Posted 2 years ago #
Steve Oldmeadow
Administrator

Glad you got it working. Are you saying there is no need to call audioSessionInterrupted manually before playing the movie?

I'd appreciate it if you could give some code or exact instructions and I will create an entry in the Wiki.

Posted 2 years ago #

fmdevelopr
Member

Yeah, pretty much - I was assuming that I need to do that manually.. this always screwed it up. This works for me

Before playing:

MPMoviePlayerController* player;
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(movieDidFinish:) name:@"MPMoviePlayerPlaybackDidFinishNotification" object:nil];
		[[Director sharedDirector] replaceScene: [Scene node]]; // make it black
		[player setMovieControlMode: MPMovieControlModeHidden];
		[player play];

After playing:

- (void) movieDidFinish: (NSNotification*)notifcation {

	[[NSNotificationCenter defaultCenter] removeObserver:self name:@"MPMoviePlayerPlaybackDidFinishNotification" object:nil];
	MPMoviePlayerController* mpc = [notifcation object];
	[mpc stop];
	[mpc release];
	[self performSelector:@selector(resumeAfterMovie) withObject:nil afterDelay:2.0];
}

- (void) resumeAfterMovie {
	[[CDAudioManager sharedManager] audioSessionResumed];
	[[Director sharedDirector] replaceScene: myNextScene]; // whatever you want
}

Posted 2 years ago #

quano
Member

Are there any updates for this? I'm using simple audio engine and I'm having this issue.

Posted 1 year ago #
Steve Oldmeadow
Administrator

^What do you mean? The problem is solved in the code above.

Posted 1 year ago #
quano
Member

For CDAudioManager, yea, but not SimpleAudioEngine.

edit:
ah, I didn't realize SimpleAudioEngine uses CDAudioManager. I used the solution above and it seems to work. Thanks!

Posted 1 year ago #
Steve Oldmeadow
Administrator

SimpleAudioEngine is just a wrapper around CDAudioManager, the code given above should work. If not then you should report a bug.

Posted 1 year ago #
quano
Member

Ah, thanks. I didn't realize this. The solution seems to work..

Posted 1 year ago #
Steve Oldmeadow
Administrator

^ I only recently fixed it up so you could use the CDAudioManager shared instance with SimpleAudioEngine but from now on you should be good to do so.

Posted 1 year ago #

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