diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2016-07-21 02:04:03 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2016-07-21 11:26:28 +0200 |
| commit | 9264bb7e79a50678eca6f320e1e1fb85bf00b009 (patch) | |
| tree | 9769c999f9f8344d4abb4e0ceaa35b7abc48385c /libavfilter | |
| parent | 541731488e2d6cc83629abdf5f9b00c873a6d1a4 (diff) | |
avfilter/vf_psnr: Fix rounding error in average_max
The intermediate was rounded to an integer
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavfilter')
| -rw-r--r-- | libavfilter/vf_psnr.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libavfilter/vf_psnr.c b/libavfilter/vf_psnr.c index 89acd3ca76..0c8d0f1a31 100644 --- a/libavfilter/vf_psnr.c +++ b/libavfilter/vf_psnr.c @@ -241,6 +241,7 @@ 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; @@ -273,10 +274,12 @@ 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) |