[vdr] Re: fonts

[Maxime GUILBOT <maxime.guilbot@online.fr>]

Klaus Schmidinger wrote:

>Ulrich Petri wrote:
>
>>>Klaus Schmidinger wrote:
>>>
>>>Alessio Sangalli wrote:
>>>
>>>>Hi. Later when I'll come back home I'll hopefully post some new
>>>>regarding fonts of OSD display.
>>>>
>>>>A question, to Klaus or to everyone very into vdr osd
>>>>
>>>system: the osd is
>>>
>>>>now presented with 1 bit depth: foreground or background
>>>>
>>>(transparent).
>>>
>>>Actually the large center part of the OSD has 2 bpp.
>>>
>>>>A great thing to enhance readability would be to render
>>>>
>>>characters with
>>>
>>>>variuos level of color, or even with sub-pixel rendering.
>>>>
>>>What are the
>>>
>>>>real limitations of the OSD? could it be possible to render
>>>>
>>>a 2, 4 bit
>>>
>>>>depth OSD image?
>>>>
>>>OSD memory is ************EXTREMELY************** limited.
>>>You won't be able to use a decent sized OSD with even 4bpp.
>>>
>>Hi,
>>
>>is this limitation because of the hardware design or is it
>>firmware-related?
>>
>>CU Ulrich
>>
>
>It's because the designers of the DVB card have only equipped the card
>with 2MB SDRAM instead of the possible 4MB. Besides, the more color
>depth you use, the slower the OSD becomes and the higher the disturbances
>when using the OSD during replay are.
>
>Klaus
>
For my Prefer Channel Menu, I use  a 4bpp osd display, and the max size 
is around 400x400 for this 4bpp.
osd memory is limited but quite fast.
Maxime