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[FFmpeg-devel,3/3] avfilter/af_loudnorm: remove hard clipping of samples

Message ID 20220222164616.511012-3-onemda@gmail.com
State New
Headers show
Series [FFmpeg-devel,1/3] avfilter/af_loudnorm: switch to activate | expand

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Commit Message

Paul B Mahol Feb. 22, 2022, 4:46 p.m. UTC
It can cause unpleasant artifacts.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
---
 libavfilter/af_loudnorm.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)
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Patch

diff --git a/libavfilter/af_loudnorm.c b/libavfilter/af_loudnorm.c
index 7c8ac3a39d..9bb0c65bb7 100644
--- a/libavfilter/af_loudnorm.c
+++ b/libavfilter/af_loudnorm.c
@@ -394,12 +394,8 @@  static void true_peak_limiter(LoudNormContext *s, double *out, int nb_samples, i
     } while (smp_cnt < nb_samples);
 
     for (n = 0; n < nb_samples; n++) {
-        for (c = 0; c < channels; c++) {
+        for (c = 0; c < channels; c++)
             out[c] = buf[index + c];
-            if (fabs(out[c]) > ceiling) {
-                out[c] = ceiling * (out[c] < 0 ? -1 : 1);
-            }
-        }
         out += channels;
         index += channels;
         if (index >= s->limiter_buf_size)