[FFmpeg-devel] [PATCH 2/3] Add LOCAL_ALIGNED() macro for declaring aligned local arrays
Mans Rullgard
mans
Tue Feb 16 21:01:36 CET 2010
---
configure | 2 ++
libavcodec/dsputil.h | 16 ++++++++++++++++
2 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/configure b/configure
index 891b06c..9689026 100755
--- a/configure
+++ b/configure
@@ -1035,6 +1035,8 @@ HAVE_LIST="
libdc1394_1
libdc1394_2
llrint
+ local_aligned_16
+ local_aligned_8
log2
log2f
loongson
diff --git a/libavcodec/dsputil.h b/libavcodec/dsputil.h
index 2d8d41a..af15d96 100644
--- a/libavcodec/dsputil.h
+++ b/libavcodec/dsputil.h
@@ -700,6 +700,22 @@ static inline void emms(void)
# define STRIDE_ALIGN 8
#endif
+#define LOCAL_ALIGNED(a, t, v, s, ...) \
+ uint8_t la_##v[sizeof(t s __VA_ARGS__) + (a)]; \
+ t (*v) __VA_ARGS__ = (void *)FFALIGN((uintptr_t)la_##v, a)
+
+#if HAVE_LOCAL_ALIGNED_8
+# define LOCAL_ALIGNED_8((t, v, s, ...) DECLARE_ALIGNED_8(t, v) s __VA_ARGS__
+#else
+# define LOCAL_ALIGNED_8(t, v, s, ...) LOCAL_ALIGNED(8, t, v, s, __VA_ARGS__)
+#endif
+
+#if HAVE_LOCAL_ALIGNED_16
+# define LOCAL_ALIGNED_16((t, v, s, ...) DECLARE_ALIGNED_16(t, v) s __VA_ARGS__
+#else
+# define LOCAL_ALIGNED_16(t, v, s, ...) LOCAL_ALIGNED(16, t, v, s, __VA_ARGS__)
+#endif
+
/* PSNR */
void get_psnr(uint8_t *orig_image[3], uint8_t *coded_image[3],
int orig_linesize[3], int coded_linesize,
--
1.7.0
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