API

[Matthias Kretz]

On Tuesday 10 July 2007, Richard wrote:
> Is there functionallity for prerolling media in phonon?
>
> If not, I would suggest the possibility of supporting this with e.g
> the method:
> bool MediaObject::preRollMedia(qint64 startTime = 0, float
> playbackRate = 1.0f);
>
> ...and then a signal:
> MediaObject::mediaPreRolled(float percentage);
> ...That lets the user monitor the progress.

preroll is implicit in Phonon and I like it that way until you can convince me 
otherwise.

Another thing the Phonon API allows is what you know from some CD players: 
after setting the MediaSource you can call pause() and the MediaObject will 
go from StoppedState into PausedState. A transition from Paused to Playing is 
guaranteed to be the fastest you can get.

> BTW: I connot find any notion of playback rate either, except in the
> experimental files (videodataoutput). Perhaps we should add this
> somewhere. In QuickTime you can have negative playback rate, meaning
> the movie will play backwards ;)

VideoDataOutput only gives you the frame rate for a playback rate of 1.0. 
Fast/slow/backward playback is not supported in the current Phonon API. And I 
think we should postpone that to post-4.0

-- 
________________________________________________________
Matthias Kretz (Germany)                            <><
http://Vir.homelinux.org/
MatthiasKretz at gmx.net, kretz at kde.org,
Matthias.Kretz at urz.uni-heidelberg.de
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