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List:       kde-multimedia
Subject:    Re: mpeglib into KDE/CVS ?
From:       Charles <charles () altair ! dhs ! org>
Date:       2000-07-02 21:13:13
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I solved this problem:

As it turns out, the returned time is correct, it's just not formatted
"properly"

Rather than currentTime() report 10 seconds, it's report 20 seconds  and
-10000ms



On Sat, 01 Jul 2000, you wrote:
> On Fri, Jun 30, 2000 at 10:44:24AM -0700, Charles wrote:
> > 
> > Looking good!
> > 
> > Hit the play button.  And use the seek-bar to seek somewhere.
> > 
> > See the problem?
> >
> Do you mean the wrong positions/jumping slider?
> The time should be right.
> You can modify in decoderBaseObject_impl the currentTime method
> a bit.
> I dont know your source, but you should not do everytime
> you move the slider a "seek" only if the slider is released
> you should do a seek.
> Every seek call is _very_ expensive.
> As I understand arts the calls may not be synchron.
> Maybe you get "delayed" time information?
> 
> What happens during seek?
> we reset the start counter in ArtsOutputStream:
> 
> void ArtsOutputStream::audioClose() {
>   audioTime->setTime(0.0);
> 
> and in decoderBaseObject_impl: in the seek method:
> 
>   // now set a new startTime
>   startTime=sec;
> 
> on a currentTime call we calculate the new current time
> out of the starttime and the played bytes.
> 
>   AudioTime* audioTime=outputStream->getAudioTime();
>   float currentTime=audioTime->getTime()+(float)startTime;
>   time.seconds=(long)(currentTime+startTime);
>   time.ms=(long) (1000.0*(currentTime-(float)time.seconds));
>   return time;
> 
> You can modify mpeglibartsplay to test seeking. 
> 
> 
> > I was looking in the source and had no luck in finding the problem.  But I
> > think it's possible that it is returining the wrong current position, rather
> > than setting the wrong position.
> >
> 
> see decoderBaseObject_impl. there are two currentTime methods.
> Maybe you call the wrong? 
> 
> regards,
> 
> Martin
> 
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--

Charles - charles@kde.org
"Hva er det lys ting på himmelen?"
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