84 lines
3.2 KiB
C
84 lines
3.2 KiB
C
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/* ------------------------------------------------------------------
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* Copyright (C) 1998-2009 PacketVideo
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
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* express or implied.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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* -------------------------------------------------------------------
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*/
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/****************************************************************************************
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Portions of this file are derived from the following 3GPP standard:
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3GPP TS 26.073
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ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
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Available from http://www.3gpp.org
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(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
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Permission to distribute, modify and use this file under the standard license
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terms listed above has been obtained from the copyright holder.
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****************************************************************************************/
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/*
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********************************************************************************
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*
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* GSM AMR-NB speech codec R98 Version 7.5.0 March 2, 2001
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* R99 Version 3.2.0
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* REL-4 Version 4.0.0
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*
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********************************************************************************
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*
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* File : syn_filt.h
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* Purpose : Perform synthesis filtering through 1/A(z).
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*
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*
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********************************************************************************
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*/
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#ifndef syn_filt_h
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#define syn_filt_h "$Id $"
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/*
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********************************************************************************
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* INCLUDE FILES
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********************************************************************************
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*/
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#include "typedef.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/*
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********************************************************************************
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* DEFINITION OF DATA TYPES
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********************************************************************************
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*/
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/*
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********************************************************************************
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* DECLARATION OF PROTOTYPES
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********************************************************************************
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*/
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void Syn_filt(
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Word16 a[], /* (i) : a[m+1] prediction coefficients (m=10) */
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Word16 x[], /* (i) : input signal */
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Word16 y[], /* (o) : output signal */
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Word16 lg, /* (i) : size of filtering */
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Word16 mem[], /* (i/o): memory associated with this filtering. */
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Word16 update /* (i) : 0=no update, 1=update of memory. */
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);
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#ifdef __cplusplus
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}
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#endif
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#endif
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