1 /* ------------------------------------------------------------------
2 * Copyright (C) 1998-2009 PacketVideo
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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
14 * See the License for the specific language governing permissions
15 * and limitations under the License.
16 * -------------------------------------------------------------------
18 /****************************************************************************************
19 Portions of this file are derived from the following 3GPP standard:
22 ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
23 Available from http://www.3gpp.org
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 ****************************************************************************************/
30 ------------------------------------------------------------------------------
34 Filename: d_gain_p.cpp
37 ------------------------------------------------------------------------------
38 INPUT AND OUTPUT DEFINITIONS
41 mode -- enumerated type -- AMR mode
42 index -- Word16 -- index of quantization
49 Global Variables Used:
52 Local Variables Needed:
55 ------------------------------------------------------------------------------
58 Function : d_gain_pitch
59 Purpose : Decodes the pitch gain using the received index.
62 ------------------------------------------------------------------------------
67 ------------------------------------------------------------------------------
70 d_gain_p.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
72 ------------------------------------------------------------------------------
77 ------------------------------------------------------------------------------
81 /*----------------------------------------------------------------------------
83 ----------------------------------------------------------------------------*/
88 /*--------------------------------------------------------------------------*/
94 /*----------------------------------------------------------------------------
96 ; Define module specific macros here
97 ----------------------------------------------------------------------------*/
100 /*----------------------------------------------------------------------------
102 ; Include all pre-processor statements here. Include conditional
103 ; compile variables also.
104 ----------------------------------------------------------------------------*/
106 /*----------------------------------------------------------------------------
107 ; LOCAL FUNCTION DEFINITIONS
108 ; Function Prototype declaration
109 ----------------------------------------------------------------------------*/
112 /*----------------------------------------------------------------------------
113 ; LOCAL STORE/BUFFER/POINTER DEFINITIONS
114 ; Variable declaration - defined here and used outside this module
115 ----------------------------------------------------------------------------*/
117 /*----------------------------------------------------------------------------
118 ; EXTERNAL FUNCTION REFERENCES
119 ; Declare functions defined elsewhere and referenced in this module
120 ----------------------------------------------------------------------------*/
122 /*----------------------------------------------------------------------------
123 ; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES
124 ; Declare variables used in this module but defined elsewhere
125 ----------------------------------------------------------------------------*/
127 /*--------------------------------------------------------------------------*/
132 /*----------------------------------------------------------------------------
134 ----------------------------------------------------------------------------*/
136 Word16 d_gain_pitch( /* return value: gain (Q14) */
137 enum Mode mode, /* i : AMR mode */
138 Word16 index, /* i : index of quantization */
139 const Word16* qua_gain_pitch_ptr /* i : pointer to read-only tables */
144 gain = qua_gain_pitch_ptr[index];