[FFmpeg-cvslog] avfilter/vf_waveform: only use available components

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Sat Mar  5 20:22:35 2016 +0100| [f3c00be2a3ddc38c1851e0cd42de754a54d6af69] | committer: Paul B Mahol

avfilter/vf_waveform: only use available components

Signed-off-by: Paul B Mahol <onemda at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f3c00be2a3ddc38c1851e0cd42de754a54d6af69
---

 libavfilter/vf_waveform.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavfilter/vf_waveform.c b/libavfilter/vf_waveform.c
index fa78264..a84e3f2 100644
--- a/libavfilter/vf_waveform.c
+++ b/libavfilter/vf_waveform.c
@@ -1158,7 +1158,7 @@ static int config_output(AVFilterLink *outlink)
     if (!s->peak)
         return AVERROR(ENOMEM);
 
-    for (p = 0; p < 4; p++) {
+    for (p = 0; p < s->ncomp; p++) {
         const int is_chroma = (p == 1 || p == 2);
         const int shift_w = (is_chroma ? s->desc->log2_chroma_w : 0);
         const int shift_h = (is_chroma ? s->desc->log2_chroma_h : 0);