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avfilter/af_astats: do not clear previous sample value

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Should help when using reset=1 and metadata=1

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2016-02-26 10:35:19 +01:00
parent dedcb3c5a5
commit 2a7f056d88
1 changed files with 18 additions and 5 deletions
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23
libavfilter/af_astats.c
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@ -98,14 +98,27 @@ static void reset_stats(AudioStatsContext *s)
{
int c;
memset(s->chstats, 0, sizeof(*s->chstats) * s->nb_channels);
for (c = 0; c < s->nb_channels; c++) {
ChannelStats *p = &s->chstats[c];
p->min = p->min_sigma_x2 = DBL_MAX;
p->max = p->max_sigma_x2 = DBL_MIN;
p->min_diff = p->max_diff = -1;
p->min_diff = DBL_MAX;
p->max_diff = DBL_MIN;
p->sigma_x = 0;
p->sigma_x2 = 0;
p->avg_sigma_x2 = 0;
p->min_sigma_x2 = 0;
p->max_sigma_x2 = 0;
p->min_run = 0;
p->max_run = 0;
p->min_runs = 0;
p->max_runs = 0;
p->diff1_sum = 0;
p->mask = 0;
p->min_count = 0;
p->max_count = 0;
p->nb_samples = 0;
}
}
@ -164,8 +177,8 @@ static inline void update_stat(AudioStatsContext *s, ChannelStats *p, double d)
p->sigma_x += d;
p->sigma_x2 += d * d;
p->avg_sigma_x2 = p->avg_sigma_x2 * s->mult + (1.0 - s->mult) * d * d;
p->min_diff = FFMIN(p->min_diff == -1 ? DBL_MAX : p->min_diff, fabs(d - (p->min_diff == -1 ? DBL_MAX : p->last)));
p->max_diff = FFMAX(p->max_diff, fabs(d - (p->max_diff == -1 ? d : p->last)));
p->min_diff = FFMIN(p->min_diff, fabs(d - p->last));
p->max_diff = FFMAX(p->max_diff, fabs(d - p->last));
p->diff1_sum += fabs(d - p->last);
p->last = d;
p->mask |= llrint(d * (UINT64_C(1) << 63));