SetBufferPicture the right place to add brightness?

[Chris Worley]

I need to add a brightness setting for playback.

SetBufferPicture seems to be the right place to do this.  Is this 
function used to initialize the display buffer when the SDL plugin is 
used?

It has a "Clear areas" section where it iteratively sets "*p_data++ = 
0".  Is this the buffer used by the SDL plugin to render into?  Is it 
YUV or RGB?

I figure if the output plugin is going to add to this buffer, I can 
initialize it to a shade of gray in order to get brighter output.

Thanks,

Chris