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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/pitch_ol.h
35  
36       Date: 02/06/2002
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             : pitch_ol.h
49         Purpose          : Compute the open loop pitch lag.
50  
51  ------------------------------------------------------------------------------
52  */
53  
54  #ifndef PITCH_OL_H
55  #define PITCH_OL_H "$Id $"
56  
57  /*----------------------------------------------------------------------------
58  ; INCLUDES
59  ----------------------------------------------------------------------------*/
60  #include "typedef.h"
61  #include "mode.h"
62  #include "vad.h"
63  
64  /*--------------------------------------------------------------------------*/
65  #ifdef __cplusplus
66  extern "C"
67  {
68  #endif
69  
70      /*----------------------------------------------------------------------------
71      ; MACROS
72      ; [Define module specific macros here]
73      ----------------------------------------------------------------------------*/
74  
75      /*----------------------------------------------------------------------------
76      ; DEFINES
77      ; [Include all pre-processor statements here.]
78      ----------------------------------------------------------------------------*/
79  
80      /*----------------------------------------------------------------------------
81      ; EXTERNAL VARIABLES REFERENCES
82      ; [Declare variables used in this module but defined elsewhere]
83      ----------------------------------------------------------------------------*/
84  
85      /*----------------------------------------------------------------------------
86      ; SIMPLE TYPEDEF'S
87      ----------------------------------------------------------------------------*/
88  
89      /*----------------------------------------------------------------------------
90      ; ENUMERATED TYPEDEF'S
91      ----------------------------------------------------------------------------*/
92  
93      /*----------------------------------------------------------------------------
94      ; STRUCTURES TYPEDEF'S
95      ----------------------------------------------------------------------------*/
96  
97  
98      /*----------------------------------------------------------------------------
99      ; GLOBAL FUNCTION DEFINITIONS
100      ; [List function prototypes here]
101      ----------------------------------------------------------------------------*/
102      Word16 Pitch_ol(       /* o   : open loop pitch lag                         */
103          vadState *vadSt,   /* i/o : VAD state struct                            */
104          enum Mode mode,    /* i   : coder mode                                  */
105          Word16 signal[],   /* i   : signal used to compute the open loop pitch  */
106          /*    signal[-pit_max] to signal[-1] should be known */
107          Word16 pit_min,    /* i   : minimum pitch lag                           */
108          Word16 pit_max,    /* i   : maximum pitch lag                           */
109          Word16 L_frame,    /* i   : length of frame to compute pitch            */
110          Word16 idx,        /* i   : frame index                                 */
111          Flag dtx,          /* i   : dtx flag; use dtx=1, do not use dtx=0       */
112          Flag *pOverflow    /* i/o : overflow Flag                               */
113      );
114  
115  
116  #ifdef __cplusplus
117  }
118  #endif
119  
120  #endif  /* PITCH_OL_H_ */
121  
122  
123