[FFmpeg-cvslog] avfilter/tremolo: fix wavetable buffer size

[Kyle Swanson]

ffmpeg | branch: master | Kyle Swanson <k at ylo.ph> | Wed Oct 28 21:29:59 2015 -0500| [3b1939bb6679e4e2e91eb41e7f09830ac418de16] | committer: Michael Niedermayer

avfilter/tremolo: fix wavetable buffer size

Signed-off-by: Kyle Swanson <k at ylo.ph>
Reviewed-by: Paul B Mahol <onemda at gmail.com>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=3b1939bb6679e4e2e91eb41e7f09830ac418de16
---

 libavfilter/af_tremolo.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/libavfilter/af_tremolo.c b/libavfilter/af_tremolo.c
index 50df2e4..572e9e3 100644
--- a/libavfilter/af_tremolo.c
+++ b/libavfilter/af_tremolo.c
@@ -72,7 +72,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
         dst += channels;
         src += channels;
         s->index++;
-        if (s->index >= inlink->sample_rate)
+        if (s->index >= inlink->sample_rate / s->freq)
             s->index = 0;
     }
 
@@ -125,11 +125,11 @@ static int config_input(AVFilterLink *inlink)
     const double offset = 1. - s->depth / 2.;
     int i;
 
-    s->table = av_malloc_array(inlink->sample_rate, sizeof(*s->table));
+    s->table = av_malloc_array(inlink->sample_rate / s->freq, sizeof(*s->table));
     if (!s->table)
         return AVERROR(ENOMEM);
 
-    for (i = 0; i < inlink->sample_rate; i++) {
+    for (i = 0; i < inlink->sample_rate / s->freq; i++) {
         double env = s->freq * i / inlink->sample_rate;
         env = sin(2 * M_PI * fmod(env + 0.25, 1.0));
         s->table[i] = env * (1 - fabs(offset)) + offset;