occasional crash in AudioQueueStop()
occasional crash in AudioQueueStop()
- Subject: occasional crash in AudioQueueStop()
- From: John Zorko <email@hidden>
- Date: Fri, 17 Oct 2008 08:54:02 -0700
Hello, all ...
My app is behaving much better, thanks in no small part to the help of
people on this list -- so thank you :-)
I still see an occasional crash, though ... and I don't know why.
Here's the last few frames of the backtrace:
[Switching to thread 10755]
Program received signal: “EXC_BAD_ACCESS”.
(gdb) bt
#0 0x3486df8c in ClientAudioQueue::ServicePendingCallbacks ()
#1 0x3486e314 in AudioQueueStop ()
#2 0x0000e7ee in -[AudioStreamer stop] (self=0x87da00,
_cmd=0x3018cc44) at /Users/jmzorko/devstuff/iphone/Magnatune/Classes/
AudioStreamer.m:381
#3 0x00008602 in -[AlbumController tableView:cellForRowAtIndexPath:]
(self=0x124b90, _cmd=0x30130e24, tableView=0x1251e0,
indexPath=0x131970) ...
The AudioStreamer -stop() method is simple:
- (void)stop
{
stopping = true;
if (connection)
{
[connection cancel];
NSLog(@"connection cancelled");
[connection release];
connection = nil;
if (started)
{
OSStatus err = AudioQueueStop(audioQueue, true);
if (err) { NSLog(@"AudioQueueStop"); return; }
}
else
{
self.isPlaying = false;
finished = true;
}
}
}
I am catching the _IsRunning notification, though I don't think the
issue is anything with that code. The AudioStreamer is based on the
AudioFileStreamExample project included with the developer tools. Is
this call stack indicative of something particular, some common Core
Audio n00b mistake?
Regards,
John
Falling You - exploring the beauty of voice and sound
http://www.fallingyou.com
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