swscale: change 9/10bit YUV input macros to inline functions.

Inline functions are slightly larger in source code, but
are easier to handle in source code editors. The binary code
generated is the same.

libswscale/swscale.c

@@ -1344,33 +1344,51 @@ static void nv21ToUV_c(uint8_t *dstU, uint8_t *dstV,
 }
 
 // FIXME Maybe dither instead.
-#define YUV_NBPS(depth, endianness, rfunc) \
-static void endianness ## depth ## ToUV_c(uint8_t *dstU, uint8_t *dstV, \
-                                          const uint8_t *_srcU, const uint8_t *_srcV, \
-                                          int width, uint32_t *unused) \
+static av_always_inline void
+yuv9_OR_10ToUV_c_template(uint8_t *dstU, uint8_t *dstV,
+                          const uint8_t *_srcU, const uint8_t *_srcV,
+                          int width, enum PixelFormat origin, int depth)
+{
+    int i;
+    const uint16_t *srcU = (const uint16_t *) _srcU;
+    const uint16_t *srcV = (const uint16_t *) _srcV;
+
+#define input_pixel(pos) (isBE(origin) ? AV_RB16(pos) : AV_RL16(pos))
+    for (i = 0; i < width; i++) {
+        dstU[i] = input_pixel(&srcU[i]) >> (depth - 8);
+        dstV[i] = input_pixel(&srcV[i]) >> (depth - 8);
+    }
+}
+
+static av_always_inline void
+yuv9_or_10ToY_c_template(uint8_t *dstY, const uint8_t *_srcY,
+                         int width, enum PixelFormat origin, int depth)
+{
+    int i;
+    const uint16_t *srcY = (const uint16_t*)_srcY;
+
+    for (i = 0; i < width; i++)
+        dstY[i] = input_pixel(&srcY[i]) >> (depth - 8);
+#undef input_pixel
+}
+
+#define YUV_NBPS(depth, BE_LE, origin) \
+static void BE_LE ## depth ## ToUV_c(uint8_t *dstU, uint8_t *dstV, \
+                                     const uint8_t *srcU, const uint8_t *srcV, \
+                                     int width, uint32_t *unused) \
 { \
-    int i; \
-    const uint16_t *srcU = (const uint16_t*)_srcU; \
-    const uint16_t *srcV = (const uint16_t*)_srcV; \
-    for (i = 0; i < width; i++) { \
-        dstU[i] = rfunc(&srcU[i])>>(depth-8); \
-        dstV[i] = rfunc(&srcV[i])>>(depth-8); \
-    } \
+    yuv9_OR_10ToUV_c_template(dstU, dstV, srcU, srcV, width, origin, depth); \
 } \
-\
-static void endianness ## depth ## ToY_c(uint8_t *dstY, const uint8_t *_srcY, \
-                                         int width, uint32_t *unused) \
+static void BE_LE ## depth ## ToY_c(uint8_t *dstY, const uint8_t *srcY, \
+                                    int width, uint32_t *unused) \
 { \
-    int i; \
-    const uint16_t *srcY = (const uint16_t*)_srcY; \
-    for (i = 0; i < width; i++) \
-        dstY[i] = rfunc(&srcY[i])>>(depth-8); \
-} \
+    yuv9_or_10ToY_c_template(dstY, srcY, width, origin, depth); \
+}
 
-YUV_NBPS( 9, LE, AV_RL16)
-YUV_NBPS( 9, BE, AV_RB16)
-YUV_NBPS(10, LE, AV_RL16)
-YUV_NBPS(10, BE, AV_RB16)
+YUV_NBPS( 9, LE, PIX_FMT_YUV420P9LE);
+YUV_NBPS( 9, BE, PIX_FMT_YUV420P9BE);
+YUV_NBPS(10, LE, PIX_FMT_YUV420P10LE);
+YUV_NBPS(10, BE, PIX_FMT_YUV420P10BE);
 
 static void bgr24ToY_c(uint8_t *dst, const uint8_t *src,
                        int width, uint32_t *unused)