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authorFalk Hüffner <mellum@users.sourceforge.net>2002-07-13 16:17:38 +0000
committerFalk Hüffner <mellum@users.sourceforge.net>2002-07-13 16:17:38 +0000
commitf5abd9fd1a9958aa745af31c05cc790ee842c8e7 (patch)
tree7f14ea8ca082b4f26c7b821780bd207efda7be69
parent8ed2ddb2c23f1764bef28d8b225376dc95e6e75e (diff)
downloadffmpeg-f5abd9fd1a9958aa745af31c05cc790ee842c8e7.tar.gz
* Improve xy2 routines slightly
* Mark MC pointer arguments as restrict Originally committed as revision 752 to svn://svn.ffmpeg.org/ffmpeg/trunk
-rw-r--r--libavcodec/alpha/dsputil_alpha.c89
1 files changed, 46 insertions, 43 deletions
diff --git a/libavcodec/alpha/dsputil_alpha.c b/libavcodec/alpha/dsputil_alpha.c
index 816f945857..18c58dc1ac 100644
--- a/libavcodec/alpha/dsputil_alpha.c
+++ b/libavcodec/alpha/dsputil_alpha.c
@@ -133,6 +133,9 @@ static inline uint64_t avg2(uint64_t a, uint64_t b)
return (a | b) - (((a ^ b) & BYTE_VEC(0xfe)) >> 1);
}
+#if 0
+/* The XY2 routines basically utilize this scheme, but reuse parts in
+ each iteration. */
static inline uint64_t avg4(uint64_t l1, uint64_t l2, uint64_t l3, uint64_t l4)
{
uint64_t r1 = ((l1 & ~BYTE_VEC(0x03)) >> 2)
@@ -146,21 +149,7 @@ static inline uint64_t avg4(uint64_t l1, uint64_t l2, uint64_t l3, uint64_t l4)
+ BYTE_VEC(0x02)) >> 2) & BYTE_VEC(0x03);
return r1 + r2;
}
-
-static inline uint64_t avg4_no_rnd(uint64_t l1, uint64_t l2,
- uint64_t l3, uint64_t l4)
-{
- uint64_t r1 = ((l1 & ~BYTE_VEC(0x03)) >> 2)
- + ((l2 & ~BYTE_VEC(0x03)) >> 2)
- + ((l3 & ~BYTE_VEC(0x03)) >> 2)
- + ((l4 & ~BYTE_VEC(0x03)) >> 2);
- uint64_t r2 = (( (l1 & BYTE_VEC(0x03))
- + (l2 & BYTE_VEC(0x03))
- + (l3 & BYTE_VEC(0x03))
- + (l4 & BYTE_VEC(0x03))
- + BYTE_VEC(0x01)) >> 2) & BYTE_VEC(0x03);
- return r1 + r2;
-}
+#endif
#define OP(LOAD, STORE, INCR) \
do { \
@@ -194,36 +183,47 @@ static inline uint64_t avg4_no_rnd(uint64_t l1, uint64_t l2,
} while (--h); \
} while (0)
-#define OP_XY2(LOAD, STORE, INCR) \
- do { \
- uint64_t pix1 = LOAD(pixels); \
- uint64_t pix2 = pix1 >> 8 | ((uint64_t) pixels[8] << 56); \
- \
- do { \
- uint64_t next_pix1, next_pix2; \
- \
- pixels += line_size; \
- next_pix1 = LOAD(pixels); \
- next_pix2 = next_pix1 >> 8 | ((uint64_t) pixels[8] << 56); \
- \
- STORE(AVG4(pix1, pix2, next_pix1, next_pix2), block); \
- \
- block += INCR; \
- pix1 = next_pix1; \
- pix2 = next_pix2; \
- } while (--h); \
+#define OP_XY2(LOAD, STORE, INCR) \
+ do { \
+ uint64_t pix1 = LOAD(pixels); \
+ uint64_t pix2 = pix1 >> 8 | ((uint64_t) pixels[8] << 56); \
+ uint64_t pix_l = (pix1 & BYTE_VEC(0x03)) \
+ + (pix2 & BYTE_VEC(0x03)); \
+ uint64_t pix_h = ((pix1 & ~BYTE_VEC(0x03)) >> 2) \
+ + ((pix2 & ~BYTE_VEC(0x03)) >> 2); \
+ \
+ do { \
+ uint64_t npix1, npix2; \
+ uint64_t npix_l, npix_h; \
+ uint64_t avg; \
+ \
+ pixels += line_size; \
+ npix1 = LOAD(pixels); \
+ npix2 = npix1 >> 8 | ((uint64_t) pixels[8] << 56); \
+ npix_l = (npix1 & BYTE_VEC(0x03)) \
+ + (npix2 & BYTE_VEC(0x03)); \
+ npix_h = ((npix1 & ~BYTE_VEC(0x03)) >> 2) \
+ + ((npix2 & ~BYTE_VEC(0x03)) >> 2); \
+ avg = (((pix_l + npix_l + AVG4_ROUNDER) >> 2) & BYTE_VEC(0x03)) \
+ + pix_h + npix_h; \
+ STORE(avg, block); \
+ \
+ block += INCR; \
+ pix_l = npix_l; \
+ pix_h = npix_h; \
+ } while (--h); \
} while (0)
-#define MAKE_OP(BTYPE, OPNAME, SUFF, OPKIND, STORE, INCR) \
-static void OPNAME ## _pixels ## SUFF ## _axp(BTYPE *block, \
- const uint8_t *pixels, \
- int line_size, int h) \
-{ \
- if ((size_t) pixels & 0x7) { \
- OPKIND(uldq, STORE, INCR); \
- } else { \
- OPKIND(ldq, STORE, INCR); \
- } \
+#define MAKE_OP(BTYPE, OPNAME, SUFF, OPKIND, STORE, INCR) \
+static void OPNAME ## _pixels ## SUFF ## _axp \
+ (BTYPE *restrict block, const uint8_t *restrict pixels, \
+ int line_size, int h) \
+{ \
+ if ((size_t) pixels & 0x7) { \
+ OPKIND(uldq, STORE, INCR); \
+ } else { \
+ OPKIND(ldq, STORE, INCR); \
+ } \
}
#define PIXOP(BTYPE, OPNAME, STORE, INCR) \
@@ -235,6 +235,7 @@ static void OPNAME ## _pixels ## SUFF ## _axp(BTYPE *block, \
/* Rounding primitives. */
#define AVG2 avg2
#define AVG4 avg4
+#define AVG4_ROUNDER BYTE_VEC(0x02)
#define STORE(l, b) stq(l, b)
PIXOP(uint8_t, put, STORE, line_size);
@@ -245,9 +246,11 @@ PIXOP(uint8_t, avg, STORE, line_size);
/* Not rounding primitives. */
#undef AVG2
#undef AVG4
+#undef AVG4_ROUNDER
#undef STORE
#define AVG2 avg2_no_rnd
#define AVG4 avg4_no_rnd
+#define AVG4_ROUNDER BYTE_VEC(0x01)
#define STORE(l, b) stq(l, b)
PIXOP(uint8_t, put_no_rnd, STORE, line_size);