[vdr] Re: Picture viewer

[Andreas Schultz <aschultz@cs.uni-magdeburg.de>]

Dave Chapman wrote:
> Hello,
> 
> I have experimented with ImageMagick/mpeg2enc to convert bitmaps into MPEG-2 
> I-frames (the format needed to display a still picture on the DVB card) and 
> there is one problem.
> 
> If I use a driver with Klaus's "Still image patch", then the DVB card won't 
> display my images, but if I use the original driver, then it works fine (but 
> VDR can't display a still image during editting).

The DVD player also needs to enforce the display of a single I-Frame. 
There is a class called cIFrameAssembler in the DVD patch, that extracts 
a single I-Frame from a MPEG-2 stream. The extracted I-Frame is then 
pushed into the driver by cDVDplayBuffer::SendIframe().
This method works on both, the orignal and Klaus's patched driver versions.
Maybe the same method could be employed for VDR editting and the still 
picture viewer.

Have fun

Andreas

> I assume that this is why Convergence won't accept Klaus's patch into the 
> main version of the driver.  If any developers want to experiment with this, 
> you can use my dvbimage application at http://www.linuxstb.org
> 
> 
> Dave.

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