1a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/* ------------------------------------------------------------------ 2a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * Copyright (C) 1998-2009 PacketVideo 3a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * 4a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 5a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * you may not use this file except in compliance with the License. 6a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * You may obtain a copy of the License at 7a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * 8a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 9a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * 10a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * Unless required by applicable law or agreed to in writing, software 11a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 12a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 13a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * express or implied. 14a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * See the License for the specific language governing permissions 15a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * and limitations under the License. 16a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * ------------------------------------------------------------------- 17a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber */ 18a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/**************************************************************************************** 19a30d40083856cb4edd225faf8b488fab156e5976Andreas HuberPortions of this file are derived from the following 3GPP standard: 20a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 21a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 3GPP TS 26.073 22a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec 23a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Available from http://www.3gpp.org 24a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 25a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) 26a30d40083856cb4edd225faf8b488fab156e5976Andreas HuberPermission to distribute, modify and use this file under the standard license 27a30d40083856cb4edd225faf8b488fab156e5976Andreas Huberterms listed above has been obtained from the copyright holder. 28a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber****************************************************************************************/ 29a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/* 30a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 31a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 32a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 33a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 34a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Filename: /audio/gsm_amr/c/include/dtx_dec.h 35a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 36a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Date: 02/06/2002 37a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 38a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 39a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber REVISION HISTORY 40a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 41a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Description: Replaced "int" and/or "char" with OSCL defined types. 42a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 43a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Description: Moved _cplusplus #ifdef after Include section. 44a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 45a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Description: 46a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 47a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 48a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber INCLUDE DESCRIPTION 49a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 50a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber File : dtx_dec.h 51a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Purpose : Decode comfort noice when in DTX 52a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 53a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber------------------------------------------------------------------------------ 54a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber*/ 55a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 56a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 57a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; CONTINUE ONLY IF NOT ALREADY DEFINED 58a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 59a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#ifndef DTX_DEC_H 60a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#define DTX_DEC_H 61a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#define dtx_dec_h "$Id $" 62a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 63a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*---------------------------------------------------------------------------- 64a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber; INCLUDES 65a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber----------------------------------------------------------------------------*/ 66a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#include "typedef.h" 67a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#include "d_plsf.h" 68a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#include "gc_pred.h" 69a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#include "c_g_aver.h" 70a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#include "frame.h" 71a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#include "dtx_common_def.h" 72a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber/*--------------------------------------------------------------------------*/ 73a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#ifdef __cplusplus 74a30d40083856cb4edd225faf8b488fab156e5976Andreas Huberextern "C" 75a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber{ 76a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#endif 77a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 78a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /*---------------------------------------------------------------------------- 79a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ; MACROS 80a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ; Define module specific macros here 81a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ----------------------------------------------------------------------------*/ 82a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 83a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /*---------------------------------------------------------------------------- 84a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ; DEFINES 85a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ; Include all pre-processor statements here. 86a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ----------------------------------------------------------------------------*/ 87a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 88a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /*---------------------------------------------------------------------------- 89a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ; EXTERNAL VARIABLES REFERENCES 90a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ; Declare variables used in this module but defined elsewhere 91a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ----------------------------------------------------------------------------*/ 92a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 93a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /*---------------------------------------------------------------------------- 94a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ; SIMPLE TYPEDEF'S 95a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ----------------------------------------------------------------------------*/ 96a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 97a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 98a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /*---------------------------------------------------------------------------- 99a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ; ENUMERATED TYPEDEF'S 100a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ----------------------------------------------------------------------------*/ 101a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber enum DTXStateType {SPEECH = 0, DTX, DTX_MUTE}; 102a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 103a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /*---------------------------------------------------------------------------- 104a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ; STRUCTURES TYPEDEF'S 105a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ----------------------------------------------------------------------------*/ 106a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber typedef struct 107a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber { 108a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 since_last_sid; 109a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 true_sid_period_inv; 110a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 log_en; 111a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 old_log_en; 112a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word32 L_pn_seed_rx; 113a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 lsp[M]; 114a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 lsp_old[M]; 115a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 116a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 lsf_hist[M*DTX_HIST_SIZE]; 117a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 lsf_hist_ptr; 118a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 lsf_hist_mean[M*DTX_HIST_SIZE]; 119a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 log_pg_mean; 120a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 log_en_hist[DTX_HIST_SIZE]; 121a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 log_en_hist_ptr; 122a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 123a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 log_en_adjust; 124a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 125a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 dtxHangoverCount; 126a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 decAnaElapsedCount; 127a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 128a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 sid_frame; 129a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 valid_data; 130a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 dtxHangoverAdded; 131a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 132a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber enum DTXStateType dtxGlobalState; /* contains previous state */ 133a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /* updated in main decoder */ 134a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 135a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 data_updated; /* marker to know if CNI data is ever renewed */ 136a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 137a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber } dtx_decState; 138a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 139a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /*---------------------------------------------------------------------------- 140a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ; GLOBAL FUNCTION DEFINITIONS 141a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ; Function Prototype declaration 142a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ----------------------------------------------------------------------------*/ 143a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 144a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /* 145a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * Function : dtx_dec_reset 146a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * Purpose : Resets state memory 147a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * Returns : 0 on success 148a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber */ 149a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 dtx_dec_reset(dtx_decState *st); 150a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 151a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /* 152a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * Function : dtx_dec 153a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * Purpose : 154a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * Description : 155a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber */ 156a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber void dtx_dec( 157a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber dtx_decState *st, /* i/o : State struct */ 158a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 mem_syn[], /* i/o : AMR decoder state */ 159a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber D_plsfState* lsfState, /* i/o : decoder lsf states */ 160a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber gc_predState* predState, /* i/o : prediction states */ 161a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Cb_gain_averageState* averState, /* i/o : CB gain average states */ 162a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber enum DTXStateType new_state, /* i : new DTX state */ 163a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber enum Mode mode, /* i : AMR mode */ 164a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 parm[], /* i : Vector of synthesis parameters */ 165a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 synth[], /* o : synthesised speech */ 166a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 A_t[], /* o : decoded LP filter in 4 subframes*/ 167a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Flag *pOverflow 168a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ); 169a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 170a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber void dtx_dec_activity_update(dtx_decState *st, 171a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 lsf[], 172a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Word16 frame[], 173a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Flag *pOverflow); 174a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 175a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /* 176a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * Function : rx_dtx_handler 177a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * Purpose : reads the frame type and checks history 178a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber * Description : to decide what kind of DTX/CNI action to perform 179a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber */ 180a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber enum DTXStateType rx_dtx_handler(dtx_decState *st, /* i/o : State struct */ 181a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber enum RXFrameType frame_type,/* i : Frame type */ 182a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber Flag *pOverflow); 183a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 184a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber /*---------------------------------------------------------------------------- 185a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ; END 186a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber ----------------------------------------------------------------------------*/ 187a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#ifdef __cplusplus 188a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber} 189a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#endif 190a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber 191a30d40083856cb4edd225faf8b488fab156e5976Andreas Huber#endif /* DEC_AMR_H_ */ 192