Avoid duplication of usePal() macro.

Originally committed as revision 30856 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

libswscale/swscale.c

@@ -92,7 +92,6 @@ untested special converters
         || (x)==PIX_FMT_UYVY422     \
         || isAnyRGB(x)              \
     )
-#define usePal(x) (av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL)
 
 #define RGB2YUV_SHIFT 15
 #define BY ( (int)(0.114*219/255*(1<<RGB2YUV_SHIFT)+0.5))

libswscale/swscale_internal.h

@@ -442,6 +442,7 @@ const char *sws_format_name(enum PixelFormat format);
         || (x)==PIX_FMT_RGB32_1     \
         || (x)==PIX_FMT_YUVA420P    \
     )
+#define usePal(x) (av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL)
 
 extern const uint64_t ff_dither4[2];
 extern const uint64_t ff_dither8[2];

libswscale/utils.c

@@ -150,8 +150,6 @@ int sws_isSupportedOutput(enum PixelFormat pix_fmt)
     return isSupportedOut(pix_fmt);
 }
 
-#define usePal(x) (av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL)
-
 extern const int32_t ff_yuv2rgb_coeffs[8][4];
 
 const char *sws_format_name(enum PixelFormat format)