On 11/29/2017 02:13 AM, Roman Lebedev wrote:
and RawSpeed is LGPL2. so that not is even an option.
Ahh, good point.
1. Will any of those curve_tools functions in DT do what the cubic_spline
function in dcraw (reproduced below for reference) does? I'm not really
familiar with calculating curves, but I'm a bit worried that it seems like
they're all geared towards interpolating a single point on a curve, which
I'm assuming would be very slow compared to the approach dcraw takes of
calculating all the points on the curve and then just doing a lookup for
each pixel.
Let's not do premature optimizations :)
Implement the most dumbest/simplest variant, that is actually readable,
then i'll add tests and a benchmark; and *then* a specialized, faster
implementation *may* be added.
So I should implement cubic spline from scratch? I'll have a go at it,
what's the worst that could go wrong? ;)
Thanks,
Robby
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