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  Filename: /audio/gsm_amr/c/src/include/hp_max.h
35 
36      Date: 02/01/2002
37 
38 ------------------------------------------------------------------------------
39  REVISION HISTORY
40 
41  Description: Moved _cplusplus #ifdef after Include section.
42 
43  Description:
44 
45 ------------------------------------------------------------------------------
46  INCLUDE DESCRIPTION
47 
48        File             : hp_max.h
49        Purpose          : Find the maximum correlation of scal_sig[] in a given
50                           delay range.
51 
52 ------------------------------------------------------------------------------
53 */
54 
55 #ifndef HP_MAX_H
56 #define HP_MAX_H  "$Id $"
57 
58 /*----------------------------------------------------------------------------
59 ; INCLUDES
60 ----------------------------------------------------------------------------*/
61 #include "typedef.h"
62 
63 /*--------------------------------------------------------------------------*/
64 #ifdef __cplusplus
65 extern "C"
66 {
67 #endif
68 
69     /*----------------------------------------------------------------------------
70     ; MACROS
71     ; [Define module specific macros here]
72     ----------------------------------------------------------------------------*/
73 
74     /*----------------------------------------------------------------------------
75     ; DEFINES
76     ; [Include all pre-processor statements here.]
77     ----------------------------------------------------------------------------*/
78 
79     /*----------------------------------------------------------------------------
80     ; EXTERNAL VARIABLES REFERENCES
81     ; [Declare variables used in this module but defined elsewhere]
82     ----------------------------------------------------------------------------*/
83 
84     /*----------------------------------------------------------------------------
85     ; SIMPLE TYPEDEF'S
86     ----------------------------------------------------------------------------*/
87 
88     /*----------------------------------------------------------------------------
89     ; ENUMERATED TYPEDEF'S
90     ----------------------------------------------------------------------------*/
91 
92     /*----------------------------------------------------------------------------
93     ; STRUCTURES TYPEDEF'S
94     ----------------------------------------------------------------------------*/
95 
96     /*----------------------------------------------------------------------------
97     ; GLOBAL FUNCTION DEFINITIONS
98     ; [List function prototypes here]
99     ----------------------------------------------------------------------------*/
100     Word16 hp_max(
101         Word32 corr[],      /* i   : correlation vector.                      */
102         Word16 scal_sig[],  /* i   : scaled signal.                           */
103         Word16 L_frame,     /* i   : length of frame to compute pitch         */
104         Word16 lag_max,     /* i   : maximum lag                              */
105         Word16 lag_min,     /* i   : minimum lag                              */
106         Word16 *cor_hp_max, /* o   : max high-pass filtered norm. correlation */
107         Flag   *pOverflow   /* i/o : overflow Flag                            */
108     );
109 
110 #ifdef __cplusplus
111 }
112 #endif
113 
114 #endif  /* _HP_MAX_H_ */
115 
116 
117