On Tuesday 10 January 2012 12:05:48 Laurent Pinchart wrote:
> > > That was my question, how does the user decide whether hblank or vblank
> > > is preferred ?
> >
> > I think that should be defined in the configuration itself. It's very
> > unlikely there's any need to change this dynamically.
>
> Sure, but that's not my point. How does the user decide in the first place
> when writing the configuration ?
As Sakari finally told,
- More vertical blanking
-> less rolling shutter effect (ie. less slanted image) and more time to do
some processing between frames if wanted or needed
- More horizontal blanking -> smoother data rate, especially if there are
buffers which can contain just couple of lines
I would say that generally vertical blanking is preferred unless there are
small buffers which allow required decrease in data rate for later stages in
image processing pipeline with larger horizontal blanking.
- Tuukka
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