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tests/tiny_ssim: fixed mistake in ssim_c1 calculation

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Reporter uses this code in production.

Signed-off-by: Valerii Zapodovnikov <val.zapod.vz@gmail.com>
(cherry picked from commit 8cd7465565)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Balling
2025-08-15 21:40:34 +00:00
committed by Michael Niedermayer
parent 80b3a04f5d
commit 666e70923f
1 changed files with 2 additions and 2 deletions
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4
tests/tiny_ssim.c
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@@ -79,11 +79,11 @@ static float ssim_end1( int s1, int s2, int ss, int s12 )
* Maximum value for 9-bit is: ss*64 = (2^9-1)^2*16*4*64 = 1069551616, which will not overflow. */
#if BIT_DEPTH > 9
typedef float type;
static const float ssim_c1 = .01*.01*PIXEL_MAX*PIXEL_MAX*64;
static const float ssim_c1 = .01*.01*PIXEL_MAX*PIXEL_MAX*64*64;
static const float ssim_c2 = .03*.03*PIXEL_MAX*PIXEL_MAX*64*63;
#else
typedef int type;
static const int ssim_c1 = (int)(.01*.01*PIXEL_MAX*PIXEL_MAX*64 + .5);
static const int ssim_c1 = (int)(.01*.01*PIXEL_MAX*PIXEL_MAX*64*64 + .5);
static const int ssim_c2 = (int)(.03*.03*PIXEL_MAX*PIXEL_MAX*64*63 + .5);
#endif
type fs1 = s1;