avfilter/phase: add comment on the context cached frame.

362ab940 · Clément Bœsch · 996fffbb · 362ab940
Commit 362ab940 authored May 03, 2014 by Clément Bœsch
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vf_phase.c libavfilter/vf_phase.c +1 -1

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--- a/libavfilter/vf_phase.c
+++ b/libavfilter/vf_phase.c
@@ -42,7 +42,7 @@ enum PhaseMode {
 typedef struct PhaseContext {
    const AVClass *class;
    enum PhaseMode mode;
-    AVFrame *frame;
+    AVFrame *frame; /* previous frame */
    int nb_planes;
    int planeheight[4];
    int linesize[4];