Split swscale.c into scaler code (swscale.c) and utility code (utils.c).

Originally committed as revision 30411 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

libswscale/Makefile

@@ -5,7 +5,7 @@ FFLIBS = avutil
 
 HEADERS = swscale.h
 
-OBJS = options.o rgb2rgb.o swscale.o yuv2rgb.o
+OBJS = options.o rgb2rgb.o swscale.o utils.o yuv2rgb.o
 
 OBJS-$(ARCH_BFIN)          +=  bfin/internal_bfin.o     \
                                bfin/swscale_bfin.o      \

libswscale/swscale_internal.h

@@ -460,4 +460,21 @@ extern const uint64_t ff_dither8[2];
 
 extern const AVClass sws_context_class;
 
+/**
+ * Sets c->swScale to an unscaled converter if one exists for the specific
+ * source and destination formats, bit depths, flags, etc.
+ */
+void ff_get_unscaled_swscale(SwsContext *c);
+
+/**
+ * Returns the SWS_CPU_CAPS for the optimized code compiled into swscale.
+ */
+int ff_hardcodedcpuflags(void);
+
+/**
+ * Returns function pointer to fastest main scaler path function depending
+ * on architecture and available optimizations.
+ */
+SwsFunc ff_getSwsFunc(SwsContext *c);
+
 #endif /* SWSCALE_SWSCALE_INTERNAL_H */