14f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* ------------------------------------------------------------------ 24f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Copyright (C) 1998-2009 PacketVideo 34f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * 44f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 54f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * you may not use this file except in compliance with the License. 64f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * You may obtain a copy of the License at 74f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * 84f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 94f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * 104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Unless required by applicable law or agreed to in writing, software 114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * express or implied. 144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * See the License for the specific language governing permissions 154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * and limitations under the License. 164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * ------------------------------------------------------------------- 174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber */ 184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/**************************************************************************************** 194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas HuberPortions of this file are derived from the following 3GPP standard: 204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3GPP TS 26.073 224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec 234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Available from http://www.3gpp.org 244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) 264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas HuberPermission to distribute, modify and use this file under the standard license 274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huberterms listed above has been obtained from the copyright holder. 284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber****************************************************************************************/ 294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* 304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Filename: /audio/gsm_amr/c/src/include/c_g_aver.h 354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Date: 12/29/2002 374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REVISION HISTORY 404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Moved _cplusplus #ifdef after Include section. 424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: 444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber INCLUDE DESCRIPTION 474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber File : c_g_aver.h 494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Purpose : Background noise source charateristic detector (SCD) 504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber*/ 534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifndef _C_G_AVER_H_ 554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#define _C_G_AVER_H_ 564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; INCLUDES 594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "typedef.h" 614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "mode.h" 624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "cnst.h" 634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*--------------------------------------------------------------------------*/ 654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifdef __cplusplus 664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huberextern "C" 674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif 694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; MACROS 724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; [Define module specific macros here] 734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; DEFINES 774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; [Include all pre-processor statements here.] 784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#define L_CBGAINHIST 7 804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; EXTERNAL VARIABLES REFERENCES 834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; [Declare variables used in this module but defined elsewhere] 844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; SIMPLE TYPEDEF'S 884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; ENUMERATED TYPEDEF'S 924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; STRUCTURES TYPEDEF'S 964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber typedef struct 984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* history vector of past synthesis speech energy */ 1004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 cbGainHistory[L_CBGAINHIST]; 1014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* state flags */ 1034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 hangVar; /* counter; */ 1044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 hangCount; /* counter; */ 1054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } Cb_gain_averageState; 1074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 1094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; GLOBAL FUNCTION DEFINITIONS 1104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; [List function prototypes here] 1114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 1124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* 1134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Function : Cb_gain_average_init 1144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Purpose : Allocates initializes state memory 1154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Description : Stores pointer to filter status struct in *st. This 1164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * pointer has to be passed to Cb_gain_average in each call. 1174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Returns : 0 on success 1184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber */ 1194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 Cb_gain_average_init(Cb_gain_averageState **st); 1204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* 1224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Function : Cb_gain_average_reset 1234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Purpose : Resets state memory 1244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Returns : 0 on success 1254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber */ 1264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 Cb_gain_average_reset(Cb_gain_averageState *st); 1274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* 1294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Function : Cb_gain_average_exit 1304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Purpose : The memory used for state memory is freed 1314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Description : Stores NULL in *s 1324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Returns : void 1334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber */ 1344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber void Cb_gain_average_exit(Cb_gain_averageState **st); 1354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* 1374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Function : Cb_gain_average 1384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Purpose : Charaterice synthesis speech and detect background noise 1394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Returns : background noise decision; 0 = bgn, 1 = no bgn 1404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber */ 1414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 Cb_gain_average( 1424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Cb_gain_averageState *st, /* i/o : State variables for CB gain avergeing */ 1434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber enum Mode mode, /* i : AMR mode */ 1444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 gain_code, /* i : CB gain Q1 */ 1454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 lsp[], /* i : The LSP for the current frame Q15 */ 1464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 lspAver[], /* i : The average of LSP for 8 frames Q15 */ 1474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 bfi, /* i : bad frame indication flag */ 1484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 prev_bf, /* i : previous bad frame indication flag */ 1494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 pdfi, /* i : potential degraded bad frame ind flag */ 1504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 prev_pdf, /* i : prev pot. degraded bad frame ind flag */ 1514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 inBackgroundNoise, /* i : background noise decision */ 1524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 voicedHangover, /* i : # of frames after last voiced frame */ 1534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Flag *pOverflow 1544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ); 1554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifdef __cplusplus 1584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber} 1594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif 1604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif /* _C_G_AVER_H_ */ 1624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 164