avutil/common: Add FF_PTR_ADD()

Suggested-by: Andreas Rheinhardt Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
4 years ago · 522a5259e9
parent dfeb9b3a8b
commit 522a5259e9
1 changed files with 2 additions and 0 deletions
--- a/libavutil/internal.h
+++ b/libavutil/internal.h
@ -102,6 +102,8 @@
 #define FF_ALLOC_TYPED_ARRAY(p, nelem)  (p = av_malloc_array(nelem, sizeof(*p)))
 #define FF_ALLOCZ_TYPED_ARRAY(p, nelem) (p = av_mallocz_array(nelem, sizeof(*p)))

+#define FF_PTR_ADD(ptr, off) ((off) ? (ptr) + (off) : (ptr))
+
 #include "libm.h"

 /**