@@ -211,7 +211,7 @@ static int get_nb_points(const struct keypoint *d)

 #define CLIP(v) (nbits == 8 ? av_clip_uint8(v) : av_clip_uint16(v))

-static inline int interpolate(AVFilterContext *ctx, uint16_t *y,

+static inline int interpolate(void *log_ctx, uint16_t *y,

                               const struct keypoint *points, int nbits)

 {

     int i, ret = 0;

@@ -315,7 +315,7 @@ static inline int interpolate(AVFilterContext *ctx, uint16_t *y,

             const double xx = (x - x_start) * 1./scale;

             const double yy = a + b*xx + c*xx*xx + d*xx*xx*xx;

             y[x] = CLIP(yy * scale);

-            av_log(ctx, AV_LOG_DEBUG, "f(%f)=%f -> y[%d]=%d\n", xx, yy, x, y[x]);

+            av_log(log_ctx, AV_LOG_DEBUG, "f(%f)=%f -> y[%d]=%d\n", xx, yy, x, y[x]);

         }

         point = point->next;

@@ -334,10 +334,10 @@ end:

 }

 #define DECLARE_INTERPOLATE_FUNC(nbits)                                     \

-static const int interpolate##nbits(AVFilterContext *ctx, uint16_t *y,      \

+static const int interpolate##nbits(void *log_ctx, uint16_t *y,             \

                                     const struct keypoint *points)          \

 {                                                                           \

-    return interpolate(ctx, y, points, nbits);                              \

+    return interpolate(log_ctx, y, points, nbits);                          \

 }

 DECLARE_INTERPOLATE_FUNC(8)