1 // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
2 // All rights reserved.
3 // This component and the accompanying materials are made available
4 // under the terms of "Eclipse Public License v1.0"
5 // which accompanies this distribution, and is available
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
8 // Initial Contributors:
9 // Nokia Corporation - initial contribution.
21 const TInt KFrameSize = 160;
22 const TInt KSubFrameSize = 40;
24 #define FRAMESIZE KFrameSize /* samples in speech frame */
25 #define SUBFRAMESIZE KSubFrameSize /* samples in subframe */
27 class CGSM610FR_Encoder;
28 class CGSM610FR_Decoder;
30 void reset_encoder( CGSM610FR_Encoder* aEncoder );
31 void reset_decoder( CGSM610FR_Decoder* aDecoder );
33 void prepr( CGSM610FR_Encoder* aEncoder, int2 sof[], int2 so[] );
34 void preemp( CGSM610FR_Encoder* aEncoder, int2 s[], int2 sof[] );
35 int2 autoc( int4 L_ACF[], int2 s[] ); /* scalauto is returned */
36 void schur( int2 r[], int4 L_ACF[] );
37 void larcomp( int2 LAR[], int2 r[] );
38 void codlar( int2 LARc[], int2 LAR[] );
39 void declar( int2 LARpp[], int2 LARc[] );
40 void cparc1( int2 LARp[], int2 LARpp_prev[], int2 LARpp[] );
41 void cparc2( int2 LARp[], int2 LARpp_prev[], int2 LARpp[] );
42 void cparc3( int2 LARp[], int2 LARpp_prev[], int2 LARpp[] );
43 void cparc4( int2 LARp[], int2 LARpp_prev[], int2 LARpp[] );
44 void crp( int2 rp[], int2 LARp[] );
45 void invfil( CGSM610FR_Encoder* aEncoder, int2 d[], int2 s[], int2 rp[], int k_start, int k_end );
46 void ltpcomp( CGSM610FR_Encoder* aEncoder, int2 *Nc, int2 *bc, int2 d[], int k_start );
47 void ltpfil( CGSM610FR_Encoder* aEncoder, int2 e[], int2 dpp[], int2 d[], int2 bc, int2 Nc, int k_start );
48 void weight( int2 x[], int2 e[] );
49 int2 gridsel( int2 xM[], int2 x[] );
50 void expman( int2 *EXP, int2 *mant, int2 xmaxc );
51 int2 quantize_xmax( int2 xmax );
52 int2 apcm( int2 *xmaxc, int2 xMc[], int2 xM[], int2 *EXP, int2 *mant );
53 void iapcm( int2 xMp[], int2 xMc[], int2 EXP, int2 mant );
54 void gridpos( int2 ep[], int2 xMp[], int2 Mc );
55 void ltpupd( CGSM610FR_Encoder* aEncoder, int2 dpp[], int2 ep[] );
56 void ltpsyn( CGSM610FR_Decoder* aDecoder, int2 erp[], int2 wt[], int2 bcr, int2 Ncr );
57 void synfil( CGSM610FR_Decoder* aDecoder, int2 sr[], int2 wt[], int2 rrp[], int k_start, int k_end );
59 void postpr( CGSM610FR_Decoder* aDecoder, int2 srop[], int2 sr[] );