avcodec/lossless_videoencdsp: Constify src sub_left_predict

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

libavcodec/lossless_videoencdsp.c

@@ -74,7 +74,7 @@ static void sub_median_pred_c(uint8_t *dst, const uint8_t *src1,
     *left_top = lt;
 }
 
-static void sub_left_predict_c(uint8_t *dst, uint8_t *src,
+static void sub_left_predict_c(uint8_t *dst, const uint8_t *src,
                                ptrdiff_t stride, ptrdiff_t width, int height)
 {
     int i, j;

libavcodec/lossless_videoencdsp.h

@@ -35,7 +35,7 @@ typedef struct LLVidEncDSPContext {
                             const uint8_t *src2, intptr_t w,
                             int *left, int *left_top);
 
-    void (*sub_left_predict)(uint8_t *dst, uint8_t *src,
+    void (*sub_left_predict)(uint8_t *dst, const uint8_t *src,
                           ptrdiff_t stride, ptrdiff_t width, int height);
 } LLVidEncDSPContext;
 

libavcodec/x86/lossless_videoencdsp.asm

@@ -145,7 +145,7 @@ DIFF_BYTES_PROLOGUE
 
 
 ;--------------------------------------------------------------------------------------------------
-;void sub_left_predict(uint8_t *dst, uint8_t *src, ptrdiff_t stride, ptrdiff_t width, int height)
+;void sub_left_predict(uint8_t *dst, const uint8_t *src, ptrdiff_t stride, ptrdiff_t width, int height)
 ;--------------------------------------------------------------------------------------------------
 
 INIT_XMM avx

libavcodec/x86/lossless_videoencdsp_init.c

@@ -34,7 +34,7 @@ void ff_diff_bytes_sse2(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
 void ff_diff_bytes_avx2(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
                         intptr_t w);
 
-void ff_sub_left_predict_avx(uint8_t *dst, uint8_t *src,
+void ff_sub_left_predict_avx(uint8_t *dst, const uint8_t *src,
                             ptrdiff_t stride, ptrdiff_t width, int height);
 
 #if HAVE_INLINE_ASM