1/* ------------------------------------------------------------------
2 * Copyright (C) 1998-2009 PacketVideo
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
13 * express or implied.
14 * See the License for the specific language governing permissions
15 * and limitations under the License.
16 * -------------------------------------------------------------------
17 */
18/****************************************************************************************
19Portions of this file are derived from the following 3GPP standard:
20
21    3GPP TS 26.073
22    ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
23    Available from http://www.3gpp.org
24
25(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
26Permission to distribute, modify and use this file under the standard license
27terms listed above has been obtained from the copyright holder.
28****************************************************************************************/
29/*
30------------------------------------------------------------------------------
31
32
33
34 Pathname: ./audio/gsm-amr/c/include/cor_h_x2.h
35
36     Date: 11/07/2001
37
38------------------------------------------------------------------------------
39 REVISION HISTORY
40
41 Description: Created separate header file for cor_h_x2.
42
43 Description: Added pOverflow for EPOC modifications
44
45 Description: Moved _cplusplus #ifdef after Include section.
46
47 Description:
48
49------------------------------------------------------------------------------
50 INCLUDE DESCRIPTION
51
52 This file contains prototype declaration for cor_h_x2 function.
53
54------------------------------------------------------------------------------
55*/
56
57/*----------------------------------------------------------------------------
58; CONTINUE ONLY IF NOT ALREADY DEFINED
59----------------------------------------------------------------------------*/
60#ifndef COR_H_X2_H
61#define COR_H_X2_H
62
63/*----------------------------------------------------------------------------
64; INCLUDES
65----------------------------------------------------------------------------*/
66#include    "typedef.h"
67
68/*--------------------------------------------------------------------------*/
69#ifdef __cplusplus
70extern "C"
71{
72#endif
73
74    /*----------------------------------------------------------------------------
75    ; MACROS
76    ; Define module specific macros here
77    ----------------------------------------------------------------------------*/
78
79    /*----------------------------------------------------------------------------
80    ; DEFINES
81    ; Include all pre-processor statements here.
82    ----------------------------------------------------------------------------*/
83
84    /*----------------------------------------------------------------------------
85    ; EXTERNAL VARIABLES REFERENCES
86    ; Declare variables used in this module but defined elsewhere
87    ----------------------------------------------------------------------------*/
88
89    /*----------------------------------------------------------------------------
90    ; SIMPLE TYPEDEF'S
91    ----------------------------------------------------------------------------*/
92
93    /*----------------------------------------------------------------------------
94    ; ENUMERATED TYPEDEF'S
95    ----------------------------------------------------------------------------*/
96
97    /*----------------------------------------------------------------------------
98    ; STRUCTURES TYPEDEF'S
99    ----------------------------------------------------------------------------*/
100
101    /*----------------------------------------------------------------------------
102    ; GLOBAL FUNCTION DEFINITIONS
103    ; Function Prototype declaration
104    ----------------------------------------------------------------------------*/
105    void cor_h_x2(
106        Word16 h[],    /* (i): impulse response of weighted synthesis filter */
107        Word16 x[],    /* (i): target                                        */
108        Word16 dn[],   /* (o): correlation between target and h[]            */
109        Word16 sf,     /* (i): scaling factor: 2 for 12.2, 1 for others      */
110        Word16 nb_track,/* (i): the number of ACB tracks                     */
111        Word16 step,   /* (i): step size from one pulse position to the next
112                           in one track                                  */
113        Flag *pOverflow
114    );
115
116#ifdef __cplusplus
117}
118#endif
119
120#endif  /* _COR_H_X2_H_ */
121
122