| author | Michael Niedermayer <michaelni@gmx.at> | 2013-01-12 16:34:21 (GMT) |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-01-12 16:43:29 (GMT) |
| commit | ef7fdc8cff2c5cabd51eb4a47e6fc92f885b7352 (patch) | |
| tree | 6c2b922cdc57361dac37289a6921c5f55c57b9dd | |
| parent | 68ff7d265f17d9475d8e648d55d04ea9d1d41cdb (diff) | |
| download | ffmpeg-ef7fdc8cff2c5cabd51eb4a47e6fc92f885b7352.zip ffmpeg-ef7fdc8cff2c5cabd51eb4a47e6fc92f885b7352.tar.gz ffmpeg-ef7fdc8cff2c5cabd51eb4a47e6fc92f885b7352.tar.bz2 | |
swr: use a local variable for ns_coeffs
maybe a very tiny bit faster
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libswresample/dither_template.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libswresample/dither_template.c b/libswresample/dither_template.c index 88d3260..8cf0c57 100644 --- a/libswresample/dither_template.c +++ b/libswresample/dither_template.c @@ -34,11 +34,12 @@ void RENAME(swri_noise_shaping)(SwrContext *s, AudioData *dsts, const AudioData const DELEM *src = (const DELEM*)srcs->ch[ch]; DELEM *dst = (DELEM*)dsts->ch[ch]; float *ns_errors = s->dither.ns_errors[ch]; + const float *ns_coeffs = s->dither.ns_coeffs; pos = s->dither.ns_pos; for (i=0; i<count; i++) { double d1, d = src[i]*S_1; for(j=0; j<taps; j++) - d -= s->dither.ns_coeffs[j] * ns_errors[pos + j]; + d -= ns_coeffs[j] * ns_errors[pos + j]; pos = pos ? pos - 1 : taps - 1; d1 = rint(d + noise[i]); ns_errors[pos + taps] = ns_errors[pos] = d1 - d; |