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 ------------------------------------------------------------------------------
36 ------------------------------------------------------------------------------
39 This file contains all the constant definitions and prototype definitions
40 needed by the file, q_gain.c
42 ------------------------------------------------------------------------------
45 /*----------------------------------------------------------------------------
46 ; CONTINUE ONLY IF NOT ALREADY DEFINED
47 ----------------------------------------------------------------------------*/
49 #define q_gain_c_h "$Id $"
51 /*----------------------------------------------------------------------------
53 ----------------------------------------------------------------------------*/
58 /*--------------------------------------------------------------------------*/
64 /*----------------------------------------------------------------------------
66 ; Define module specific macros here
67 ----------------------------------------------------------------------------*/
69 /*----------------------------------------------------------------------------
71 ; Include all pre-processor statements here.
72 ----------------------------------------------------------------------------*/
74 /*----------------------------------------------------------------------------
75 ; EXTERNAL VARIABLES REFERENCES
76 ; Declare variables used in this module but defined elsewhere
77 ----------------------------------------------------------------------------*/
79 /*----------------------------------------------------------------------------
81 ----------------------------------------------------------------------------*/
83 /*----------------------------------------------------------------------------
84 ; ENUMERATED TYPEDEF'S
85 ----------------------------------------------------------------------------*/
87 /*----------------------------------------------------------------------------
88 ; STRUCTURES TYPEDEF'S
89 ----------------------------------------------------------------------------*/
91 /*----------------------------------------------------------------------------
92 ; GLOBAL FUNCTION DEFINITIONS
93 ; Function Prototype declaration
94 ----------------------------------------------------------------------------*/
96 /*--------------------------------------------------------------------------*
97 * Function q_gain_code() *
98 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *
99 * Scalar quantization of the innovative codebook gain. *
101 * gc_pred() is used for MA prediction of the innovation energy *
102 *--------------------------------------------------------------------------*/
103 Word16 q_gain_code( /* o : quantization index, Q0 */
104 enum Mode mode, /* i : AMR mode */
105 Word16 exp_gcode0, /* i : predicted CB gain (exponent), Q0 */
106 Word16 frac_gcode0, /* i : predicted CB gain (fraction), Q15 */
107 Word16 *gain, /* i/o: quantized fixed codebook gain, Q1 */
108 Word16 *qua_ener_MR122, /* o : quantized energy error, Q10 */
109 /* (for MR122 MA predictor update) */
110 Word16 *qua_ener, /* o : quantized energy error, Q10 */
111 /* (for other MA predictor update) */
112 const Word16* qua_gain_code_ptr, /* i : ptr to read-only table */
116 /*----------------------------------------------------------------------------
118 ----------------------------------------------------------------------------*/
123 #endif /* q_gain_c_h */