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| author | Michael Niedermayer <michaelni@gmx.at> | 2013-01-10 01:28:24 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-01-10 01:44:15 +0100 |
| commit | 2672b2c1d2d48af94c59c198287fae1c7a785710 (patch) | |
| tree | 5865dc42359eb45f367d9b967ae9597ec8b23790 /libswresample | |
| parent | 0b60fc94aab63b80b3a898c744da50758215bc9c (diff) | |
| download | ffmpeg-2672b2c1d2d48af94c59c198287fae1c7a785710.tar.gz | |
swr: scale data down in noise shaping to avoid cliping
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libswresample')
| -rw-r--r-- | libswresample/dither.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/libswresample/dither.c b/libswresample/dither.c index 66bf184310..d7a5b6b558 100644 --- a/libswresample/dither.c +++ b/libswresample/dither.c @@ -106,6 +106,7 @@ int swri_dither_init(SwrContext *s, enum AVSampleFormat out_fmt, enum AVSampleFo s->dither.ns_taps = f->len; for (j=0; j<f->len; j++) s->dither.ns_coeffs[j] = f->coefs[j]; + s->dither.ns_scale_1 *= 1 - exp(f->gain_cB * M_LN10 * 0.005) * 2 / (1<<(8*av_get_bytes_per_sample(out_fmt))); break; } } |