@@ -40,9 +40,12 @@

 #define RED_BLUE_MASK 0x00FF00FF

 #define GREEN_MASK    0x0000FF00

+typedef void (*xbrfunc_t)(AVFrame *input, AVFrame *output, const uint32_t *r2y);

+

 typedef struct {

     const AVClass *class;

     int n;

+    xbrfunc_t func;

     uint32_t rgbtoyuv[1<<24];

 } XBRContext;

@@ -392,12 +395,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)

     }

     av_frame_copy_props(out, in);

-    if (xbr->n == 4)

-        xbr4x(in, out, r2y);

-    else if (xbr->n == 3)

-        xbr3x(in, out, r2y);

-    else

-        xbr2x(in, out, r2y);

+    xbr->func(in, out, r2y);

     out->width  = outlink->w;

     out->height = outlink->h;

@@ -409,6 +407,8 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)

 static int init(AVFilterContext *ctx)

 {

     XBRContext *xbr = ctx->priv;

+    static const xbrfunc_t xbrfuncs[] = {xbr2x, xbr3x, xbr4x};

+

     uint32_t c;

     int bg, rg, g;

@@ -427,6 +427,7 @@ static int init(AVFilterContext *ctx)

         }

     }

+    xbr->func = xbrfuncs[xbr->n - 2];

     return 0;

 }