[vdr] cBitmap::Dirty isn't working

Luca Olivetti luca at ventoso.org
Tue Apr 19 19:28:42 CEST 2005


Luca Olivetti wrote:
> Reinhard Nissl wrote:
> 
>> Hi,
>>
>> Luca Olivetti wrote:
>>
>>> I've also noticed that the xine plugin doesn't bother to copy only 
>>> the changed areas, it copies the whole bitmaps in each Flush, I 
>>> didn't check softdevice.
>>
>>
>>
>> Which version of vdr-xine did you check? 
> 
> 
> 0.7.2
> 
>> vdr-xine uses the dirty area for quite a long time.
> 
> 
> You're (obviusly ;-) right, I misinterpreted the unconditional call to 
> SendWindow as a full bitmap copy, while the check for Dirty is made 
> inside SendWindow. I'll have to investigate more where the problem comes 
> from.


Well, /me doesn't understand :-(
After forcing the femon plugin to use 3 areas (with xine it would use 
just one covering the entire screen), I can see that if I use xine I get 
the correct values in Dirty (21 for "Transponder information", 17 for 
"Stream information" and 21 right before clearing the title) while with 
the dxr3 I don't (get the last 21).
Since both xine osd and dxr3 osd take the drawing methods straight from 
cOsd[*] I'm really lost seeing the different results.

[*] I saw that you redefined them then called the base one like, e.g.:

   eOsdError cXineOsd::SetAreas(const tArea *Areas, int NumAreas)
   {
     cMutexLock osdLock(&m_osdMutex);
     return cOsd::SetAreas(Areas, NumAreas);
   }

I tried doing the same to see if using the mutex made the difference but 
it didn't.

Bye
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