summaryrefslogtreecommitdiffstats
path: root/libFDK/include/arm/scale.h
diff options
context:
space:
mode:
authorDave Burke <daveburke@google.com>2012-04-17 09:51:45 -0700
committerDave Burke <daveburke@google.com>2012-04-17 23:04:43 -0700
commit9bf37cc9712506b2483650c82d3c41152337ef7e (patch)
tree77db44e2bae06e3d144b255628be2b7a55c581d3 /libFDK/include/arm/scale.h
parenta37315fe10ee143d6d0b28c19d41a476a23e63ea (diff)
downloadODR-AudioEnc-9bf37cc9712506b2483650c82d3c41152337ef7e.tar.gz
ODR-AudioEnc-9bf37cc9712506b2483650c82d3c41152337ef7e.tar.bz2
ODR-AudioEnc-9bf37cc9712506b2483650c82d3c41152337ef7e.zip
Fraunhofer AAC codec.
License boilerplate update to follow. Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5
Diffstat (limited to 'libFDK/include/arm/scale.h')
-rw-r--r--libFDK/include/arm/scale.h90
1 files changed, 90 insertions, 0 deletions
diff --git a/libFDK/include/arm/scale.h b/libFDK/include/arm/scale.h
new file mode 100644
index 0000000..11d18fb
--- /dev/null
+++ b/libFDK/include/arm/scale.h
@@ -0,0 +1,90 @@
+/******************************** Fraunhofer IIS ***************************
+
+ (C) Copyright Fraunhofer IIS (2006)
+ All Rights Reserved
+
+ Please be advised that this software and/or program delivery is
+ Confidential Information of Fraunhofer and subject to and covered by the
+
+ Fraunhofer IIS Software Evaluation Agreement
+ between Google Inc. and Fraunhofer
+ effective and in full force since March 1, 2012.
+
+ You may use this software and/or program only under the terms and
+ conditions described in the above mentioned Fraunhofer IIS Software
+ Evaluation Agreement. Any other and/or further use requires a separate agreement.
+
+
+ $Id:
+ Author(s):
+ Description: ARM scaling operations
+
+ This software and/or program is protected by copyright law and international
+ treaties. Any reproduction or distribution of this software and/or program,
+ or any portion of it, may result in severe civil and criminal penalties, and
+ will be prosecuted to the maximum extent possible under law.
+
+******************************************************************************/
+
+#if defined(__GNUC__) /* GCC Compiler */ /* cppp replaced: elif */
+
+#if defined(__ARM_ARCH_6__)
+
+inline static INT shiftRightSat(INT src, int scale)
+{
+ INT result;
+ asm(
+ "ssat %0,%2,%0;\n"
+
+ : "=&r"(result)
+ : "r"(src>>scale), "M"(SAMPLE_BITS)
+ );
+
+ return result;
+}
+
+ #define SATURATE_INT_PCM_RIGHT_SHIFT(src, scale) shiftRightSat(src, scale)
+
+inline static INT shiftLeftSat(INT src, int scale)
+{
+ INT result;
+ asm(
+ "ssat %0,%2,%0;\n"
+
+ : "=&r"(result)
+ : "r"(src<<scale), "M"(SAMPLE_BITS)
+ );
+
+ return result;
+}
+
+ #define SATURATE_INT_PCM_LEFT_SHIFT(src, scale) shiftLeftSat(src, scale)
+
+#endif /* __ARM_ARCH_6__ */
+
+#endif /* compiler selection */
+
+#define FUNCTION_scaleValueInPlace
+inline
+void scaleValueInPlace(FIXP_DBL *value, /*!< Value */
+ INT scalefactor /*!< Scalefactor */
+ )
+{
+ INT newscale;
+ if ((newscale = scalefactor) >= 0)
+ *value <<= newscale;
+ else
+ *value >>= -newscale;
+}
+
+
+ #define SATURATE_RIGHT_SHIFT(src, scale, dBits) \
+ ( (((LONG)(src) ^ ((LONG)(src) >> (DFRACT_BITS-1)))>>(scale)) > (LONG)(((1U)<<((dBits)-1))-1)) \
+ ? ((LONG)(src) >> (DFRACT_BITS-1)) ^ (LONG)(((1U)<<((dBits)-1))-1) \
+ : ((LONG)(src) >> (scale))
+
+ #define SATURATE_LEFT_SHIFT(src, scale, dBits) \
+ ( ((LONG)(src) ^ ((LONG)(src) >> (DFRACT_BITS-1))) > ((LONG)(((1U)<<((dBits)-1))-1) >> (scale)) ) \
+ ? ((LONG)(src) >> (DFRACT_BITS-1)) ^ (LONG)(((1U)<<((dBits)-1))-1) \
+ : ((LONG)(src) << (scale))
+