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 /**************************************************************************************** 19 Portions 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) 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 ****************************************************************************************/ 29 /* 30 ------------------------------------------------------------------------------ 31 32 33 34 Filename: /audio/gsm_amr/c/include/ph_disp.h 35 36 37 Date: 08/11/2000 38 39 ------------------------------------------------------------------------------ 40 REVISION HISTORY 41 42 Description: Updated template. Updated function prototype declaration for 43 ph_disp(). Included extern declaration for ph_imp_low_MR795 and 44 ph_imp_mid_MR795 45 46 Description: Replaced "int" and/or "char" with OSCL defined types. 47 48 Description: Moved _cplusplus #ifdef after Include section. 49 50 Description: 51 52 53 ------------------------------------------------------------------------------ 54 INCLUDE DESCRIPTION 55 56 This file contains all the constant definitions and prototype definitions 57 needed by the Phase dispersion of excitation signal ph_disp() function. 58 59 ------------------------------------------------------------------------------ 60 */ 61 62 #ifndef PH_DISP_H 63 #define PH_DISP_H "$Id $" 64 65 /*---------------------------------------------------------------------------- 66 ; INCLUDES 67 ----------------------------------------------------------------------------*/ 68 #include "typedef.h" 69 #include "mode.h" 70 71 /*--------------------------------------------------------------------------*/ 72 #ifdef __cplusplus 73 extern "C" 74 { 75 #endif 76 77 /*---------------------------------------------------------------------------- 78 ; MACROS 79 ; Define module specific macros here 80 ----------------------------------------------------------------------------*/ 81 82 /*---------------------------------------------------------------------------- 83 ; DEFINES 84 ; Include all pre-processor statements here. 85 ----------------------------------------------------------------------------*/ 86 #define PHDGAINMEMSIZE 5 87 #define PHDTHR1LTP 9830 /* 0.6 in Q14 */ 88 #define PHDTHR2LTP 14746 /* 0.9 in Q14 */ 89 #define ONFACTPLUS1 16384 /* 2.0 in Q13 */ 90 #define ONLENGTH 2 91 92 /*---------------------------------------------------------------------------- 93 ; EXTERNAL VARIABLES REFERENCES 94 ; Declare variables used in this module but defined elsewhere 95 ----------------------------------------------------------------------------*/ 96 extern Word16 ph_imp_low_MR795[]; 97 extern Word16 ph_imp_mid_MR795[]; 98 extern Word16 ph_imp_low[]; 99 extern Word16 ph_imp_mid[]; 100 101 /*---------------------------------------------------------------------------- 102 ; SIMPLE TYPEDEF'S 103 ----------------------------------------------------------------------------*/ 104 105 /*---------------------------------------------------------------------------- 106 ; ENUMERATED TYPEDEF'S 107 ----------------------------------------------------------------------------*/ 108 109 /*---------------------------------------------------------------------------- 110 ; STRUCTURES TYPEDEF'S 111 ----------------------------------------------------------------------------*/ 112 typedef struct 113 { 114 Word16 gainMem[PHDGAINMEMSIZE]; 115 Word16 prevState; 116 Word16 prevCbGain; 117 Word16 lockFull; 118 Word16 onset; 119 } ph_dispState; 120 121 /*---------------------------------------------------------------------------- 122 ; GLOBAL FUNCTION DEFINITIONS 123 ; Function Prototype declaration 124 ----------------------------------------------------------------------------*/ 125 126 /*---------------------------------------------------------------------------- 127 ; 128 ; Function: ph_disp_reset 129 ; Purpose: Initializes state memory 130 ; 131 ----------------------------------------------------------------------------*/ 132 Word16 ph_disp_reset(ph_dispState *state); 133 134 /*---------------------------------------------------------------------------- 135 ; 136 ; Function: ph_disp_exit 137 ; Purpose: The memory used for state memory is freed 138 ; 139 ----------------------------------------------------------------------------*/ 140 void ph_disp_exit(ph_dispState **state); 141 142 /*---------------------------------------------------------------------------- 143 ; 144 ; Function: ph_disp_lock 145 ; Purpose: mark phase dispersion as locked in state struct 146 ; 147 ----------------------------------------------------------------------------*/ 148 void ph_disp_lock(ph_dispState *state); 149 150 /*---------------------------------------------------------------------------- 151 ; 152 ; Function: ph_disp_release 153 ; Purpose: mark phase dispersion as unlocked in state struct 154 ; 155 ----------------------------------------------------------------------------*/ 156 157 void ph_disp_release(ph_dispState *state); 158 159 /*---------------------------------------------------------------------------- 160 ; 161 ; Function: ph_disp 162 ; Purpose: perform phase dispersion according to the specified codec 163 ; mode and computes total excitation for synthesis part 164 ; if decoder 165 ; 166 ----------------------------------------------------------------------------*/ 167 168 void ph_disp( 169 ph_dispState *state, /* i/o : State struct */ 170 enum Mode mode, /* i : codec mode */ 171 Word16 x[], /* i/o Q0 : in: LTP excitation signal */ 172 /* out: total excitation signal */ 173 Word16 cbGain, /* i Q1 : Codebook gain */ 174 Word16 ltpGain, /* i Q14 : LTP gain */ 175 Word16 inno[], /* i/o Q13 : Innovation vector (Q12 for 12.2) */ 176 Word16 pitch_fac, /* i Q14 : pitch factor used to scale the 177 LTP excitation (Q13 for 12.2) */ 178 Word16 tmp_shift, /* i Q0 : shift factor applied to sum of 179 scaled LTP ex & innov. before 180 rounding */ 181 Flag *pOverflow /* i/o : oveflow indicator */ 182 ); 183 184 /*---------------------------------------------------------------------------- 185 ; END 186 ----------------------------------------------------------------------------*/ 187 #ifdef __cplusplus 188 } 189 #endif 190 191 #endif /* _PH_DISP_H_ */ 192 193
