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 /****************************************************************************************
19 Portions 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)
26 Permission to distribute, modify and use this file under the standard license
27 terms 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
70 extern "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