White background with CVideoPlayerUtility on Symbian^3

[storsjo]

Hi,

As many other discussion threads seem to discuss, people have problems with getting visible video with CVideoPlayerUtility on Symbian^3. http://www.developer.nokia.com/Commu...r_applications explains the issue, but doesn't really spell out what to do in order to solve the issue, only says:

make sure their UI is drawn correctly with ScreenPlay architecture and surface composition

The common knowledge seems to be not to do gc.Clear() at all, which works, but that leaves the background outside of the video white, when I would like it to be black instead.

// Martin

[wizard_hu_]

The suggestion says that you should not draw anything where the video is going to be rendered. But you can freely display anything around it. 4x gc.Clear(TRect) or DrawRect can probably help for example.

[storsjo]

Ok, so the user is supposed to calculate the dimensions of the video and just draw outside of that? Or is that area actually drawn by the video player available somehow?

[wizard_hu_]

I guess it is the "const TRect &aClipRect" argument of CVideoPlayerUtility::NewL

[storsjo]

Nope, in all examples I've seen, that's just set to the same as the aScreenRect argument - e.g. in http://www.developer.nokia.com/Commu...oPlayerUtility. Since it's a const reference, you don't get anything returned in it, and you can't really know the video dimensions before actually having the player open the video for you...

[wizard_hu_]

Yes, I know what const references do, just I do not often use this API and I have thought it would fill the passed rectangle(s) with the video.
There are some getter methods however: VideoFrameSizeL, perhaps GetCropRegionL (though this latter one probably returns the cliprect).

[storsjo]

Yes, some of those methods could probably be used, although it feels kinda fragile to calculate it manually (either risking painting over part of the video, or leaving a thin white line between the video and the black background).

Anyway, I solved the issue this way now:

Window().SetBackgroundColor(KRgbBlack);

I was looking for such a method before, but didn't find it until now.