From 9bf37cc9712506b2483650c82d3c41152337ef7e Mon Sep 17 00:00:00 2001 From: Dave Burke Date: Tue, 17 Apr 2012 09:51:45 -0700 Subject: Fraunhofer AAC codec. License boilerplate update to follow. Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5 --- libFDK/include/mips/scale.h | 48 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 libFDK/include/mips/scale.h (limited to 'libFDK/include/mips/scale.h') diff --git a/libFDK/include/mips/scale.h b/libFDK/include/mips/scale.h new file mode 100644 index 0000000..82b1833 --- /dev/null +++ b/libFDK/include/mips/scale.h @@ -0,0 +1,48 @@ +/*************************** Fraunhofer IIS FDK Tools ********************** + + (C) Copyright Fraunhofer IIS (2007) + 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: + + 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. + +******************************************************************************/ + +#ifndef MIPS_SCALE_H +#define MIPS_SCALE_H + +#if defined(__mips_dsp) + +/*! +* +* \brief Scale input value by 2^{scale} and saturate output to 2^{dBits-1} +* \return scaled and saturated value +* +* This macro scales src value right or left and applies saturation to (2^dBits)-1 +* maxima output. +*/ +#define SATURATE_RIGHT_SHIFT(src, scale, dBits) \ + (__builtin_mips_shll_s_w((src)>>scale,(DFRACT_BITS-(dBits)))>>(DFRACT_BITS-(dBits))) + + +#endif /*__mips_dsp */ + +#endif /* MIPS_SCALE_H */ -- cgit v1.2.3