[Fwd: Re: [Mplayer-advusers] Problme running mplayer over directfb on i845GL]

[scorproy at HotPOP.com]

>>Diego Biurrun wrote:
>>
>>    
>>
>>>scorproy at HotPOP.com writes:
>>>
>>>      
>>>
>>>>But the problem lies in the inadequate documentation of mplayer. That's 
>>>>what makes the users of mplayers look stupid I guess.
>>>>        
>>>>
>>>If you find the documentation lacking (and it is incomplete and
>>>lacking in many parts), tell me what and why you dislike so I can fix
>>>it.
>>>
>>>      
>>>
>>I guess I started this row, and I am sorry for that. I think we should 
>>really appreciate what Attila is doing. Regarding documentation, 
>>documentation for "mplayer on directfb" is lacking, specifically for 
>>directfb on i810 chipsets. Though it was a simple case of adding a 
>>filter -vf format=bgr16 so that directfb in i810 can understand the 
>>colourspace, it took me 2 days to figure this out.
>>Please let me know if I went wrong somewhere here.
>>    
>>
>
>Could you suggest something to add to
>
>http://mplayerhq.hu/DOCS/HTML/en/devices.html#directfb
>
>or even better send a patch?
>
>  
>
I ran mplayer on directfb giving this command:
*mplayer -vo directfb -vf format=bgr16 */*filename.mpg*./ My system is a 
PC with Fedora Core 2 having i845G chipsets. As far as I have 
understood, the decoder outputs in a colourspace that is not understood 
by the directfb(or frambuffer driver, I am not sure which one)
for i810 and above chipsets. So I have to add a filter to convert the 
output to bgr16 format. Also, bgr16 is not a talked about format for us 
common users. So my first instinct was to specify rgb16. But then also 
some colours were interchanged (blue & red I guess).
Only after seeing the debug output, I tried with bgr16.
My point is, I tried this by using a hit & trial method. Maybe there is 
a better way of doing this. So I cannot say what to write in the help 
doc,as I am not sure I am technically correct, but if the above method 
is correct, you can add it to the directfb section. Also, you can add a 
link to /tech/colorspcae.txt/. Though the document might be a bit 
overwhleming for a normal user, it might help if a user really wants to 
dig into the details.

>Diego
>
>  
>
Regards,
Scorproy