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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