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avfilter/vf_signalstats: Use 64bit for processing histogram

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The result might not fit into 32bit if an image has gigantic
dimensions and one of the planes has a dominant value
(particularly so if said value is big).

Fixes Coverity issues #1598399, #1598401, #1598402, #1598403, #1598404.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2024-05-24 08:54:40 +02:00
parent 4008a80c1b
commit dfd0320e23
1 changed files with 5 additions and 5 deletions
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10
libavfilter/vf_signalstats.c
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@ -721,10 +721,10 @@ static int filter_frame(AVFilterLink *link, AVFrame *in)
if (histv[fil]) maxv = fil;
if (histsat[fil]) maxsat = fil;
toty += histy[fil] * fil;
totu += histu[fil] * fil;
totv += histv[fil] * fil;
totsat += histsat[fil] * fil;
toty += (uint64_t)histy[fil] * fil;
totu += (uint64_t)histu[fil] * fil;
totv += (uint64_t)histv[fil] * fil;
totsat += (uint64_t)histsat[fil] * fil;
accy += histy[fil];
accu += histu[fil];
@ -745,7 +745,7 @@ static int filter_frame(AVFilterLink *link, AVFrame *in)
maxhue = histhue[0];
medhue = -1;
for (fil = 0; fil < 360; fil++) {
tothue += histhue[fil] * fil;
tothue += (uint64_t)histhue[fil] * fil;
acchue += histhue[fil];
if (medhue == -1 && acchue > s->cfs / 2)