[MPlayer-dev-eng] [PATCH 6/9] libavutil: Optimize clipping routines for avr32

[Hans-Christian Egtvedt]

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt at atmel.com>
---
 libavutil/common.h |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/libavutil/common.h b/libavutil/common.h
index d8f2f64..f976156 100644
--- a/libavutil/common.h
+++ b/libavutil/common.h
@@ -162,23 +162,39 @@ static inline av_const int av_log2_16bit(unsigned int v)
  * @param amax maximum value of the clip range
  * @return clipped value
  */
+#if defined(ARCH_AVR32)
+#define av_clip(a, amin, amax) \
+  ({ int __tmp__; \
+     asm ("min\t%0, %1, %2\n" \
+          "max\t%0, %0, %3\n" \
+          : "=&r"(__tmp__) : "r"(a), "r"(amax), "r"(amin)); \
+     __tmp__; })
+#else
 static inline av_const int av_clip(int a, int amin, int amax)
 {
     if      (a < amin) return amin;
     else if (a > amax) return amax;
     else               return a;
 }
+#endif
 
 /**
  * Clips a signed integer value into the 0-255 range.
  * @param a value to clip
  * @return clipped value
  */
+#if defined(ARCH_AVR32)
+#define av_clip_uint8(a) \
+  ({ int __tmp__ = a; \
+     asm ("satu\t%0 >> 0, 8" : "+r"(__tmp__)); \
+     __tmp__; })
+#else
 static inline av_const uint8_t av_clip_uint8(int a)
 {
     if (a&(~255)) return (-a)>>31;
     else          return a;
 }
+#endif
 
 /**
  * Clips a signed integer value into the -32768,32767 range.
-- 
1.5.6.3