[vdr] Re: Picture viewer

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

Dave Chapman wrote:
> On Wednesday 13 March 2002 10:47, Andreas Schultz wrote:
> 
>>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.
>>
> 
> 
> Apologies if I misunderstand your code, but you don't seem to use the 
> VIDEO_STILLPICTURE function, but you send the frame to the card "normally".  
> Is that correct?

yes, I do mostly the same thing as the VIDEO_STILLPICTURE ioctl is doing 
internaly. I just make sure, that no matter how large the i-frame is, 
400kbyte of picture data are sent to the card. The VIDEO_STILLPICTURE 
ioctl also works some magic on the i-frame, which at least for the DVD 
type i-frames is not needed.

>>From what I can tell, if Klaus changed his code to replace his call to  
> VIDEO_STILLPICTURE to use your SendIframe code, then the problem will be 
> solved.  

Maybe, but it could also be, that the above mentioned "magic" is needed 
for his i-frames. You have to try ...

Andreas

> Sorry, I can't test it at the moment - I don't currently have a working VDR 
> installation.
> 
> Have I understood correctly?
> 
> Dave.
> 
> 
>