dec_lag3.h revision 4f1efc098cb5791c3e9f483f2af84aef70d2d0a0 
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/include/dec_lag3.h
35
36     Date: 01/29/2002
37
38------------------------------------------------------------------------------
39 REVISION HISTORY
40
41 Description: Placed header file in the proper template format.  Added
42 parameter pOverflow for the basic math ops.
43
44 Description: Moved _cplusplus #ifdef after Include section.
45
46 Description:
47
48------------------------------------------------------------------------------
49 INCLUDE DESCRIPTION
50
51 This file contains all the constant definitions and prototype definitions
52 needed by the dec_lag3.c
53
54------------------------------------------------------------------------------
55*/
56
57/*----------------------------------------------------------------------------
58; CONTINUE ONLY IF NOT ALREADY DEFINED
59----------------------------------------------------------------------------*/
60#ifndef dec_lag3_h
61#define dec_lag3_h "$Id $"
62
63
64/*----------------------------------------------------------------------------
65; INCLUDES
66----------------------------------------------------------------------------*/
67#include "typedef.h"
68
69/*--------------------------------------------------------------------------*/
70#ifdef __cplusplus
71extern "C"
72{
73#endif
74
75    /*----------------------------------------------------------------------------
76    ; MACROS
77    ; Define module specific macros here
78    ----------------------------------------------------------------------------*/
79
80    /*----------------------------------------------------------------------------
81    ; DEFINES
82    ; Include all pre-processor statements here.
83    ----------------------------------------------------------------------------*/
84
85    /*----------------------------------------------------------------------------
86    ; EXTERNAL VARIABLES REFERENCES
87    ; Declare variables used in this module but defined elsewhere
88    ----------------------------------------------------------------------------*/
89
90    /*----------------------------------------------------------------------------
91    ; SIMPLE TYPEDEF'S
92    ----------------------------------------------------------------------------*/
93
94    /*----------------------------------------------------------------------------
95    ; ENUMERATED TYPEDEF'S
96    ----------------------------------------------------------------------------*/
97
98    /*----------------------------------------------------------------------------
99    ; STRUCTURES TYPEDEF'S
100    ----------------------------------------------------------------------------*/
101
102    /*----------------------------------------------------------------------------
103    ; GLOBAL FUNCTION DEFINITIONS
104    ; Function Prototype declaration
105    ----------------------------------------------------------------------------*/
106
107    void Dec_lag3(Word16 index,     /* i : received pitch index                 */
108    Word16 T0_min,    /* i : minimum of search range              */
109    Word16 T0_max,    /* i : maximum of search range              */
110    Word16 i_subfr,   /* i : subframe flag                        */
111    Word16 T0_prev,   /* i : integer pitch delay of last subframe
112                                       used in 2nd and 4th subframes        */
113    Word16 * T0,      /* o : integer part of pitch lag            */
114    Word16 * T0_frac, /* o : fractional part of pitch lag         */
115    Word16 flag4,     /* i : flag for encoding with 4 bits        */
116    Flag   * pOverflow  /* o : Flag set when overflow occurs      */
117                 );
118
119    /*----------------------------------------------------------------------------
120    ; END
121    ----------------------------------------------------------------------------*/
122#ifdef __cplusplus
123}
124#endif
125
126#endif /* _DEC_LAG_3_H_ */
127
128