ex_ctrl.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/ex_ctrl.h
35
36     Date: 02/08/2002
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             : ex_ctrl.h
49     Purpose          : Excitation Control module in background noise
50
51------------------------------------------------------------------------------
52*/
53
54/*----------------------------------------------------------------------------
55; CONTINUE ONLY IF NOT ALREADY DEFINED
56----------------------------------------------------------------------------*/
57#ifndef ex_ctrl_h
58#define ex_ctrl_h "$Id $"
59
60/*----------------------------------------------------------------------------
61; INCLUDES
62----------------------------------------------------------------------------*/
63#include "typedef.h"
64#include "cnst.h"
65
66/*--------------------------------------------------------------------------*/
67#ifdef __cplusplus
68extern "C"
69{
70#endif
71
72    /*----------------------------------------------------------------------------
73    ; MACROS
74    ; Define module specific macros here
75    ----------------------------------------------------------------------------*/
76
77    /*----------------------------------------------------------------------------
78    ; DEFINES
79    ; Include all pre-processor statements here.
80    ----------------------------------------------------------------------------*/
81#define L_ENERGYHIST 60
82    /*----------------------------------------------------------------------------
83    ; EXTERNAL VARIABLES REFERENCES
84    ; Declare variables used in this module but defined elsewhere
85    ----------------------------------------------------------------------------*/
86
87    /*----------------------------------------------------------------------------
88    ; SIMPLE TYPEDEF'S
89    ----------------------------------------------------------------------------*/
90
91    /*----------------------------------------------------------------------------
92    ; ENUMERATED TYPEDEF'S
93    ----------------------------------------------------------------------------*/
94
95    /*----------------------------------------------------------------------------
96    ; STRUCTURES TYPEDEF'S
97    ----------------------------------------------------------------------------*/
98
99    /*----------------------------------------------------------------------------
100    ; GLOBAL FUNCTION DEFINITIONS
101    ; Function Prototype declaration
102    ----------------------------------------------------------------------------*/
103    /*
104     *  Function    : Ex_ctrl
105     *  Purpose     : Charaterice synthesis speech and detect background noise
106     *  Returns     : background noise decision; 0 = bgn, 1 = no bgn
107     */
108    Word16 Ex_ctrl(Word16 excitation[],    /*i/o: Current subframe excitation   */
109    Word16 excEnergy,      /* i : Exc. Energy, sqrt(totEx*totEx)*/
110    Word16 exEnergyHist[], /* i : History of subframe energies  */
111    Word16 voicedHangover, /* i : # of fr. after last voiced fr.*/
112    Word16 prevBFI,        /* i : Set i previous BFI            */
113    Word16 carefulFlag,    /* i : Restrict dymamic in scaling   */
114    Flag   *pOverflow
115                  );
116
117    /*----------------------------------------------------------------------------
118    ; END
119    ----------------------------------------------------------------------------*/
120#ifdef __cplusplus
121}
122#endif
123
124#endif /* _ex_ctrl_h_ */
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