diff options
| author | Paul B Mahol <onemda@gmail.com> | 2022-02-24 12:30:37 +0300 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2022-02-24 13:15:28 +0300 |
| commit | 15a1104d73cbd47a67fc14ce2ddc97a92145695e (patch) | |
| tree | 863f0f263dbcf11924c9bd2276bf0eacaf631ce0 /libavfilter/f_ebur128.c | |
| parent | d5ad1d7847ebfa4da1f1476c4af18fa2701e4d24 (diff) | |
avfilter/f_ebur128: multiply is usually faster than divide
Also guard against overflow when subtracting from unsigned.
Diffstat (limited to 'libavfilter/f_ebur128.c')
| -rw-r--r-- | libavfilter/f_ebur128.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libavfilter/f_ebur128.c b/libavfilter/f_ebur128.c index d5ffab7ca1..f63cf77983 100644 --- a/libavfilter/f_ebur128.c +++ b/libavfilter/f_ebur128.c @@ -762,7 +762,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *insamples) /* get lower loudness to consider */ n = 0; - nb_pow = LRA_LOWER_PRC * nb_powers / 100. + 0.5; + nb_pow = LRA_LOWER_PRC * 0.01 * nb_powers + 0.5; for (i = gate_hist_pos; i < HIST_SIZE; i++) { n += ebur128->i3000.histogram[i].count; if (n >= nb_pow) { @@ -773,9 +773,9 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *insamples) /* get higher loudness to consider */ n = nb_powers; - nb_pow = LRA_HIGHER_PRC * nb_powers / 100. + 0.5; + nb_pow = LRA_HIGHER_PRC * 0.01 * nb_powers + 0.5; for (i = HIST_SIZE - 1; i >= 0; i--) { - n -= ebur128->i3000.histogram[i].count; + n -= FFMIN(n, ebur128->i3000.histogram[i].count); if (n < nb_pow) { ebur128->lra_high = ebur128->i3000.histogram[i].loudness; break; |