vf_yadif: silence a warning.

clang says:
libavfilter/vf_yadif.c:192:28: warning: incompatible pointer types assigning to
'void (*)(uint8_t *, uint8_t *, uint8_t *, uint8_t *, int, int, int, int, int)'
from 'void (uint16_t *, uint16_t *, uint16_t *, uint16_t *, int, int, int, int, int)'

libavfilter/vf_yadif.c

@@ -81,10 +81,14 @@
         next2++; \
     }
 
-static void filter_line_c(uint8_t *dst,
+static void filter_line_c(void *dst1,
-                          uint8_t *prev, uint8_t *cur, uint8_t *next,
+                          void *prev1, void *cur1, void *next1,
                           int w, int prefs, int mrefs, int parity, int mode)
 {
+    uint8_t *dst  = dst1;
+    uint8_t *prev = prev1;
+    uint8_t *cur  = cur1;
+    uint8_t *next = next1;
     int x;
     uint8_t *prev2 = parity ? prev : cur ;
     uint8_t *next2 = parity ? cur  : next;
@@ -92,11 +96,15 @@ static void filter_line_c(uint8_t *dst,
     FILTER
 }
 
-static void filter_line_c_16bit(uint16_t *dst,
+static void filter_line_c_16bit(void *dst1,
-                                uint16_t *prev, uint16_t *cur, uint16_t *next,
+                                void *prev1, void *cur1, void *next1,
                                 int w, int prefs, int mrefs, int parity,
                                 int mode)
 {
+    uint16_t *dst  = dst1;
+    uint16_t *prev = prev1;
+    uint16_t *cur  = cur1;
+    uint16_t *next = next1;
     int x;
     uint16_t *prev2 = parity ? prev : cur ;
     uint16_t *next2 = parity ? cur  : next;

libavfilter/x86/vf_yadif_init.c

@@ -27,14 +27,14 @@
 #include "libavcodec/x86/dsputil_mmx.h"
 #include "libavfilter/yadif.h"
 
-void ff_yadif_filter_line_mmxext(uint8_t *dst, uint8_t *prev, uint8_t *cur,
+void ff_yadif_filter_line_mmxext(void *dst, void *prev, void *cur,
-                                 uint8_t *next, int w, int prefs,
+                                 void *next, int w, int prefs,
                                  int mrefs, int parity, int mode);
-void ff_yadif_filter_line_sse2(uint8_t *dst, uint8_t *prev, uint8_t *cur,
+void ff_yadif_filter_line_sse2(void *dst, void *prev, void *cur,
-                               uint8_t *next, int w, int prefs,
+                               void *next, int w, int prefs,
                                int mrefs, int parity, int mode);
-void ff_yadif_filter_line_ssse3(uint8_t *dst, uint8_t *prev, uint8_t *cur,
+void ff_yadif_filter_line_ssse3(void *dst, void *prev, void *cur,
-                                uint8_t *next, int w, int prefs,
+                                void *next, int w, int prefs,
                                 int mrefs, int parity, int mode);
 
 av_cold void ff_yadif_init_x86(YADIFContext *yadif)

libavfilter/yadif.h

@@ -50,8 +50,8 @@ typedef struct YADIFContext {
     AVFilterBufferRef *next;
     AVFilterBufferRef *prev;
     AVFilterBufferRef *out;
-    void (*filter_line)(uint8_t *dst,
+    void (*filter_line)(void *dst,
-                        uint8_t *prev, uint8_t *cur, uint8_t *next,
+                        void *prev, void *cur, void *next,
                         int w, int prefs, int mrefs, int parity, int mode);
 
     const AVPixFmtDescriptor *csp;