[FFmpeg-cvslog] avfilter/avf_showspectrum: fix macro ()

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sat Jun 21 23:04:20 2014 +0200| [04776cedec8210e859ab96adbee9c41de2dee6b3] | committer: Michael Niedermayer

avfilter/avf_showspectrum: fix macro ()

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=04776cedec8210e859ab96adbee9c41de2dee6b3
---

 libavfilter/avf_showspectrum.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavfilter/avf_showspectrum.c b/libavfilter/avf_showspectrum.c
index fc32834..4a4b4f4 100644
--- a/libavfilter/avf_showspectrum.c
+++ b/libavfilter/avf_showspectrum.c
@@ -323,8 +323,8 @@ static int plot_spectrum_column(AVFilterLink *inlink, AVFrame *insamples, int nb
             av_rdft_calc(s->rdft, s->rdft_data[ch]);
 
         /* fill a new spectrum column */
-#define RE(y, ch) s->rdft_data[ch][2 * y + 0]
-#define IM(y, ch) s->rdft_data[ch][2 * y + 1]
+#define RE(y, ch) s->rdft_data[ch][2 * (y) + 0]
+#define IM(y, ch) s->rdft_data[ch][2 * (y) + 1]
 #define MAGNITUDE(y, ch) hypot(RE(y, ch), IM(y, ch))
 
         /* initialize buffer for combining to black */