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 Filename: /audio/gsm_amr/c/src/include/enc_lag3.h
35
36     Date: 01/29/2002
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             : enc_lag3.h
49      Purpose          : Encoding of fractional pitch lag with 1/3 resolution.
50
51------------------------------------------------------------------------------
52*/
53
54#ifndef _ENC_LAG3_H_
55#define _ENC_LAG3_H_
56#define enc_lag3_h "$Id $"
57
58/*----------------------------------------------------------------------------
59; INCLUDES
60----------------------------------------------------------------------------*/
61#include "typedef.h"
62
63/*--------------------------------------------------------------------------*/
64#ifdef __cplusplus
65extern "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    typedef struct
96    {
97        Word16 past_gain;
98    } agcState;
99
100    /*----------------------------------------------------------------------------
101    ; GLOBAL FUNCTION DEFINITIONS
102    ; [List function prototypes here]
103    ----------------------------------------------------------------------------*/
104    Word16
105    Enc_lag3(                /* o  : Return index of encoding     */
106        Word16 T0,           /* i  : Pitch delay                          */
107        Word16 T0_frac,      /* i  : Fractional pitch delay               */
108        Word16 T0_prev,      /* i  : Integer pitch delay of last subframe */
109        Word16 T0_min,       /* i  : minimum of search range              */
110        Word16 T0_max,       /* i  : maximum of search range              */
111        Word16 delta_flag,   /* i  : Flag for 1st (or 3rd) subframe       */
112        Word16 flag4,        /* i  : Flag for encoding with 4 bits        */
113        Flag   *pOverflow
114    );
115
116
117
118
119#ifdef __cplusplus
120}
121#endif
122
123#endif  /* _ENC_LAG3_H_ */
124
125
126