text: /*
   *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
   *
   *  Use of this source code is governed by a BSD-style license
   *  that can be found in the LICENSE file in the root of the source
   *  tree. An additional intellectual property rights grant can be found
   *  in the file PATENTS.  All contributing project authors may
   *  be found in the AUTHORS file in the root of the source tree.
   */
  
  /******************************************************************
  
   iLBC Speech Coder ANSI-C Source Code
  
   WebRtcIlbcfix_LspInterpolate2PolyDec.c
  
  ******************************************************************/
  
  #include "interpolate.h"
  #include "lsf_to_poly.h"
  #include "defines.h"
  
  /*----------------------------------------------------------------*
   *  interpolation of lsf coefficients for the decoder
   *---------------------------------------------------------------*/
  
  void WebRtcIlbcfix_LspInterpolate2PolyDec(
      WebRtc_Word16 *a,   /* (o) lpc coefficients Q12 */
      WebRtc_Word16 *lsf1,  /* (i) first set of lsf coefficients Q13 */
      WebRtc_Word16 *lsf2,  /* (i) second set of lsf coefficients Q13 */
      WebRtc_Word16 coef,  /* (i) weighting coefficient to use between
                                     lsf1 and lsf2 Q14 */
      WebRtc_Word16 length  /* (i) length of coefficient vectors */
                                            ){
    WebRtc_Word16 lsftmp[LPC_FILTERORDER];
  
    /* interpolate LSF */
    WebRtcIlbcfix_Interpolate(lsftmp, lsf1, lsf2, coef, length);
  
    /* Compute the filter coefficients from the LSF */
    WebRtcIlbcfix_Lsf2Poly(a, lsftmp);
  }
  