diff options
| -rw-r--r-- | libavfilter/vf_noise.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/libavfilter/vf_noise.c b/libavfilter/vf_noise.c index 1028a3c41f..051ccc206a 100644 --- a/libavfilter/vf_noise.c +++ b/libavfilter/vf_noise.c @@ -348,16 +348,20 @@ static void noise(uint8_t *dst, const uint8_t *src, for (y = start; y < end; y++) { const int ix = y & (MAX_RES - 1); - if (flags & NOISE_TEMPORAL) - shift = av_lfg_get(lfg) & (MAX_SHIFT - 1); - else - shift = n->rand_shift[ix]; + int x; + for (x=0; x < width; x+= MAX_RES) { + int w = FFMIN(width - x, MAX_RES); + if (flags & NOISE_TEMPORAL) + shift = av_lfg_get(lfg) & (MAX_SHIFT - 1); + else + shift = n->rand_shift[ix]; - if (flags & NOISE_AVERAGED) { - n->line_noise_avg(dst, src, width, (const int8_t**)p->prev_shift[ix]); - p->prev_shift[ix][shift & 3] = noise + shift; - } else { - n->line_noise(dst, src, noise, width, shift); + if (flags & NOISE_AVERAGED) { + n->line_noise_avg(dst + x, src + x, w, (const int8_t**)p->prev_shift[ix]); + p->prev_shift[ix][shift & 3] = noise + shift; + } else { + n->line_noise(dst + x, src + x, noise, w, shift); + } } dst += dst_linesize; src += src_linesize; |