Enable vsrc_buffer

Originally committed as revision 23042 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavfilter/Makefile

@@ -25,6 +25,7 @@ OBJS-$(CONFIG_SLICIFY_FILTER)                += vf_slicify.o
 OBJS-$(CONFIG_UNSHARP_FILTER)                += vf_unsharp.o
 OBJS-$(CONFIG_VFLIP_FILTER)                  += vf_vflip.o
 
+OBJS-$(CONFIG_BUFFER_FILTER)                 += vsrc_buffer.o
 OBJS-$(CONFIG_NULLSRC_FILTER)                += vsrc_nullsrc.o
 
 OBJS-$(CONFIG_NULLSINK_FILTER)               += vsink_nullsink.o

libavfilter/allfilters.c

@@ -45,6 +45,7 @@ void avfilter_register_all(void)
     REGISTER_FILTER (UNSHARP,     unsharp,     vf);
     REGISTER_FILTER (VFLIP,       vflip,       vf);
 
+    REGISTER_FILTER (BUFFER,      buffer,      vsrc);
     REGISTER_FILTER (NULLSRC,     nullsrc,     vsrc);
 
     REGISTER_FILTER (NULLSINK,    nullsink,    vsink);