@@ -112,8 +112,7 @@ static int config_input(AVFilterLink *inlink)

  * Find which field combination has the smallest average squared difference

  * between the fields.

  */

-static enum PhaseMode analyze_plane(AVFilterContext *ctx, PhaseContext *s,

-                                    AVFrame *old, AVFrame *new)

+static enum PhaseMode analyze_plane(void *ctx, enum PhaseMode mode, AVFrame *old, AVFrame *new)

 {

     double bdiff, tdiff, pdiff, scale;

     const int ns = new->linesize[0];

@@ -123,7 +122,6 @@ static enum PhaseMode analyze_plane(AVFilterContext *ctx, PhaseContext *s,

     const int h = new->height;

     const int w = new->width;

     int bdif, tdif, pdif;

-    enum PhaseMode mode = s->mode;

     uint8_t *end, *rend;

     int top, t;

@@ -261,7 +259,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)

             return AVERROR(ENOMEM);

         }

     } else {

-        mode = analyze_plane(ctx, s, s->frame, in);

+        mode = analyze_plane(ctx, s->mode, s->frame, in);

     }

     for (plane = 0; plane < s->nb_planes; plane++) {