Another pwc bug :-(

Hi,

I think I found another pwc bug.

When setting the brightness to new_value, it is really set to (new_value >> 
1). When setting contrast to new_value, it is actually set to (new_value >> 
2).

Seems like pwc emulates a 0 - 255 range for both, while the actual range is 0 
- 127 for brightness and 0 - 63 for contrast. The bug is that this emulation 
is not complete: it is done only when setting an attribute. It gives the real 
range when asked about it, and also doesn't convert back to the 0 - 255 range 
when we get the value :S

Because of this, pwc users can set their brightness only in the range 0 - 63 
and contrast only in 0 - 16! (With latest cvs. Before today, things were even 
worse. Setting it was hardly possible because the slider had a fixed 0 - 
65535 range).

Harry


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