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NSSpeechSynthesizer leaking
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NSSpeechSynthesizer leaking


  • Subject: NSSpeechSynthesizer leaking
  • From: Casey Fleser <email@hidden>
  • Date: Tue, 20 Dec 2005 13:10:21 -0600

I just need a quick sanity check to make sure I'm not seeing something obvious here before I submit this to Radar. Looks to me that NSSpeechSynthesizer isn't cleaning up after itself properly.

Just a quick and simple action to that grabs some text from an NSTextField. I subclassed NSSpeechSynthesizer (DebugSpeechSynthesizer) so I could NSLog from retain, release, and dealloc. DebugSpeechSynthesizer is getting dealloc'd, but there are huge chunks of memory that are not being reclaimed (the main culprits seem to live in MacinTalk AudioToolbox according to ObjectAlloc).

So anyway, am I missing something here? (for the record DebugSpeechSynthesizer does call [super dealloc]). Clicking the speak button repeatedly in my little sample app will consume hundreds of megabytes of memory pretty quickly.

- (IBAction) speak: (id) inSender
{
NSSpeechSynthesizer *synthesizer =
[[DebugSpeechSynthesizer alloc] initWithVoice:
[NSSpeechSynthesizer defaultVoice]];

if (synthesizer != nil) {
[synthesizer setDelegate: self];
[synthesizer startSpeakingString: [_speechText stringValue]];
}
}

- (void) speechSynthesizer: (NSSpeechSynthesizer *) inSender
didFinishSpeaking: (BOOL) inFinishedSpeaking
{
NSLog(@"NSSpeechSynthesizer %@ finished", inSender);

[inSender release];
}

The demonstration app can be grabbed here if you like:

http://www.somegeekintn.com/download/SpeechTest.zip

Thanks for any insight,

Casey

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