mirror of https://github.com/mstorsjo/fdk-aac.git
49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
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/*************************** Fraunhofer IIS FDK Tools **********************
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(C) Copyright Fraunhofer IIS (2007)
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All Rights Reserved
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Please be advised that this software and/or program delivery is
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Confidential Information of Fraunhofer and subject to and covered by the
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Fraunhofer IIS Software Evaluation Agreement
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between Google Inc. and Fraunhofer
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effective and in full force since March 1, 2012.
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You may use this software and/or program only under the terms and
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conditions described in the above mentioned Fraunhofer IIS Software
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Evaluation Agreement. Any other and/or further use requires a separate agreement.
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$Id$
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Author(s):
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Description:
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This software and/or program is protected by copyright law and international
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treaties. Any reproduction or distribution of this software and/or program,
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or any portion of it, may result in severe civil and criminal penalties, and
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will be prosecuted to the maximum extent possible under law.
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******************************************************************************/
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#ifndef MIPS_SCALE_H
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#define MIPS_SCALE_H
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#if defined(__mips_dsp)
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/*!
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*
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* \brief Scale input value by 2^{scale} and saturate output to 2^{dBits-1}
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* \return scaled and saturated value
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*
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* This macro scales src value right or left and applies saturation to (2^dBits)-1
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* maxima output.
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*/
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#define SATURATE_RIGHT_SHIFT(src, scale, dBits) \
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(__builtin_mips_shll_s_w((src)>>scale,(DFRACT_BITS-(dBits)))>>(DFRACT_BITS-(dBits)))
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#endif /*__mips_dsp */
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#endif /* MIPS_SCALE_H */
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