CMdaAudioOutputStream Stop() application crash

[andrea993]

I play sounds with CMdaAudioOutputStream and it work correctly but if I want to stopthe playing first that it had finished the application crashed.

I've tryed with:

if(iStream)
			{
                iStream->Stop();
			}

But the application crashed

if(iStream)
			{
                iStream->KeepOpenAtEnd();
                iStream->Stop();
			}

But tha applicaton crashed

if(iStream)
			{
                iStream->KeepOpenAtEnd();
                iStream->RequestStop();
			}

But the strem didn't stop.

What should I do?

[pavarang]

Hello,
it could be useful if you could tell us: where is the Stop called, where the error arises and which is the error/panic code.

regards,
pg

[andrea993]

I don't know which is the error code, the application crash immidiatly when i call stop().
I'm using qt creator and the error message is:

The inferior stopped becouse it received a signal from the operative system
Signal name: SIGSEGV
Signal meaning: Segment fault

And at the moment of the crash the application output is:
"Received too much data from remote target; ignoring overflow.
while parsing target library list: unclosed token"

[wizard_hu_]

This is the kind of message you need: http://wiki.forum.nokia.com/index.ph...ded_panic_code
On the device it can be enabled via installing that tiny ErrRd.sisx file, however for the Qt simulator, I do not know.

[andrea993]

Thank you
System error -39


I had looked for this error:
E32 (E32ERR.H) KErrAbort -39 Interrupted

What do I do?

[vineet.jain]

Not sure but you may call stop() inside some callback function which i think should be there & is called as soon as the stream is finished playing..

[wizard_hu_]

Can it happen that your MaoscPlayComplete method contains a User::LeaveIfError(aError) line?

[andrea993]

Can it happen that your MaoscPlayComplete method contains a User::LeaveIfError(aError) line?

No, because ther's the overflow error

Not sure but you may call stop() inside some callback function which i think should be there & is called as soon as the stream is finished playing..

Yes, I call stop first that the stream finished playing, is it wrong?

[pavarang]

Humm...maybe MaoscPlayComplete is not the only place to look into.
I've checked into a Symbian book, "SymbianOS C++ for Mobile Phones, Vol. 3" pag. 669 and:

If you want to stop the streaming immediately, you should call Stop()
on the audio stream.
iStream->Stop();
In this case, you should expect the following callbacks:
• MaoscBufferCopied() with an error of KErrAbort for each
buffer that you have written to the stream but which has not yet been
returned
• MaoscPlayComplete() with an error of KErrCancel.
These callbacks happen synchronously from within the call to Stop().
By the time this call returns, you can be sure that streaming has terminated.

so, if you haven't done yet, please look into aError of MaoscBufferCopied...

There's also an example, just in case you haven't looked at it yet:
https://www.developer.nokia.com/info...g_Example.html

hope it helps somehow
pg

[andrea993]

Thank you I've solve...I had wrong the User::leave because I didn't know there are KErrAbort and KErrCancel.

Thank you very much

regards,
Andrea993