The intermediate was rounded to an integer
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavfilter/vf_psnr.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/libavfilter/vf_psnr.c b/libavfilter/vf_psnr.c
index f3dff62..54d4ff0 100644
--- a/libavfilter/vf_psnr.c
+++ b/libavfilter/vf_psnr.c
@@ -246,6 +246,7 @@ static int config_input_ref(AVFilterLink *inlink)
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
AVFilterContext *ctx = inlink->dst;
PSNRContext *s = ctx->priv;
+ double average_max;
unsigned sum;
int j;
@@ -278,10 +279,12 @@ static int config_input_ref(AVFilterLink *inlink)
sum = 0;
for (j = 0; j < s->nb_components; j++)
sum += s->planeheight[j] * s->planewidth[j];
+ average_max = 0;
for (j = 0; j < s->nb_components; j++) {
s->planeweight[j] = (double) s->planeheight[j] * s->planewidth[j] /
sum;
- s->average_max += s->max[j] * s->planeweight[j];
+ average_max += s->max[j] * s->planeweight[j];
}
+ s->average_max = lrint(average_max);
s->dsp.sse_line = desc->comp[0].depth > 8 ? sse_line_16bit : sse_line_8bit;
if (ARCH_X86)
--
1.7.9.5
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