Include internal.h and imgconvert.h, they contain the prototypes for the

following functions:
ff_is_hwaccel_pix_fmt(), ff_set_systematic_pal(), ff_fill_linesize(),
ff_fill_pointer(), ff_get_plane_bytewidth()

Originally committed as revision 22106 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/imgconvert.c

@@ -33,6 +33,8 @@
 #include "avcodec.h"
 #include "dsputil.h"
 #include "colorspace.h"
+#include "internal.h"
+#include "imgconvert.h"
 #include "libavutil/pixdesc.h"
 
 #if HAVE_MMX