Make input/output pads modifiable on a per-instance basis.

This makes it possible to change filter callbacks (eg. to a SIMD version
on supported processors).  It also allows filters to change their own
input and output pads.

Commited in SoC by Bobby Bingham on 2007-07-31 19:20:54

Originally committed as revision 12090 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavfilter/avfilter.h

@@ -185,9 +185,11 @@ struct AVFilterContext
     char *name;
 
     unsigned input_count;
+    AVFilterPad   *input_pads;
     AVFilterLink **inputs;
 
     unsigned output_count;
+    AVFilterPad   *output_pads;
     AVFilterLink **outputs;
 
     void *priv;