diff options
Diffstat (limited to 'libavutil/internal.h')
-rw-r--r-- | libavutil/internal.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/libavutil/internal.h b/libavutil/internal.h index 487d0983b1..6186d8ec85 100644 --- a/libavutil/internal.h +++ b/libavutil/internal.h @@ -58,6 +58,32 @@ # define INT_BIT (CHAR_BIT * sizeof(int)) #endif +// Some broken preprocessors need a second expansion +// to be forced to tokenize __VA_ARGS__ +#define E(x) x + +#define LOCAL_ALIGNED_A(a, t, v, s, o, ...) \ + uint8_t la_##v[sizeof(t s o) + (a)]; \ + t (*v) o = (void *)FFALIGN((uintptr_t)la_##v, a) + +#define LOCAL_ALIGNED_D(a, t, v, s, o, ...) \ + DECLARE_ALIGNED(a, t, la_##v) s o; \ + t (*v) o = la_##v + +#define LOCAL_ALIGNED(a, t, v, ...) E(LOCAL_ALIGNED_A(a, t, v, __VA_ARGS__,,)) + +#if HAVE_LOCAL_ALIGNED_8 +# define LOCAL_ALIGNED_8(t, v, ...) E(LOCAL_ALIGNED_D(8, t, v, __VA_ARGS__,,)) +#else +# define LOCAL_ALIGNED_8(t, v, ...) LOCAL_ALIGNED(8, t, v, __VA_ARGS__) +#endif + +#if HAVE_LOCAL_ALIGNED_16 +# define LOCAL_ALIGNED_16(t, v, ...) E(LOCAL_ALIGNED_D(16, t, v, __VA_ARGS__,,)) +#else +# define LOCAL_ALIGNED_16(t, v, ...) LOCAL_ALIGNED(16, t, v, __VA_ARGS__) +#endif + #define FF_ALLOC_OR_GOTO(ctx, p, size, label)\ {\ p = av_malloc(size);\ |