avcodec/cfhdencdsp: Constify input pointers

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/cfhdencdsp.c

@@ -23,7 +23,7 @@
 
 #include "cfhdencdsp.h"
 
-static av_always_inline void filter(int16_t *input, ptrdiff_t in_stride,
+static av_always_inline void filter(const int16_t *input, ptrdiff_t in_stride,
                           int16_t *low, ptrdiff_t low_stride,
                           int16_t *high, ptrdiff_t high_stride,
                           int len)
@@ -46,7 +46,7 @@ static av_always_inline void filter(int16_t *input, ptrdiff_t in_stride,
                                                       1 * input[((len-2)-3)*in_stride] + 1 * input[((len-2)-4)*in_stride] + 4) >> 3);
 }
 
-static void horiz_filter(int16_t *input, int16_t *low, int16_t *high,
+static void horiz_filter(const int16_t *input, int16_t *low, int16_t *high,
                          ptrdiff_t in_stride, ptrdiff_t low_stride,
                          ptrdiff_t high_stride,
                          int width, int height)
@@ -59,7 +59,7 @@ static void horiz_filter(int16_t *input, int16_t *low, int16_t *high,
     }
 }
 
-static void vert_filter(int16_t *input, int16_t *low, int16_t *high,
+static void vert_filter(const int16_t *input, int16_t *low, int16_t *high,
                         ptrdiff_t in_stride, ptrdiff_t low_stride,
                         ptrdiff_t high_stride,
                         int width, int height)

libavcodec/cfhdencdsp.h

@@ -23,12 +23,12 @@
 #include <stdint.h>
 
 typedef struct CFHDEncDSPContext {
-    void (*horiz_filter)(int16_t *input, int16_t *low, int16_t *high,
+    void (*horiz_filter)(const int16_t *input, int16_t *low, int16_t *high,
                          ptrdiff_t in_stride, ptrdiff_t low_stride,
                          ptrdiff_t high_stride,
                          int width, int height);
 
-    void (*vert_filter)(int16_t *input, int16_t *low, int16_t *high,
+    void (*vert_filter)(const int16_t *input, int16_t *low, int16_t *high,
                         ptrdiff_t in_stride, ptrdiff_t low_stride,
                         ptrdiff_t high_stride,
                         int width, int height);

libavcodec/x86/cfhdencdsp_init.c

@@ -27,11 +27,11 @@
 #include "libavutil/x86/cpu.h"
 #include "libavcodec/cfhdencdsp.h"
 
-void ff_cfhdenc_horiz_filter_sse2(int16_t *input, int16_t *low, int16_t *high,
+void ff_cfhdenc_horiz_filter_sse2(const int16_t *input, int16_t *low, int16_t *high,
                                   ptrdiff_t in_stride, ptrdiff_t low_stride,
                                   ptrdiff_t high_stride,
                                   int width, int height);
-void ff_cfhdenc_vert_filter_sse2(int16_t *input, int16_t *low, int16_t *high,
+void ff_cfhdenc_vert_filter_sse2(const int16_t *input, int16_t *low, int16_t *high,
                                  ptrdiff_t in_stride, ptrdiff_t low_stride,
                                  ptrdiff_t high_stride,
                                  int width, int height);