Fraunhofer AAC codec.

License boilerplate update to follow.

Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5

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))
+