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avfilter/vf_phase: Add () to protect DIFF()s arguments

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer 2015-02-17 00:47:47 +01:00
parent 0cb95f9082
commit f15c734be1
1 changed files with 1 additions and 1 deletions
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libavfilter/vf_phase.c
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@ -106,7 +106,7 @@ static int config_input(AVFilterLink *inlink)
* *
* (The result is actually multiplied by 25) * (The result is actually multiplied by 25)
*/ */
#define DIFF(a, as, b, bs) (t = ((*a - b[bs]) << 2) + a[as << 1] - b[-bs], t * t) #define DIFF(a, as, b, bs) ((t) = ((*(a) - (b)[bs]) << 2) + (a)[(as) << 1] - (b)[-(bs)], (t) * (t))
/* /*
* Find which field combination has the smallest average squared difference * Find which field combination has the smallest average squared difference