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 Filename: /audio/gsm_amr/c/src/include/d_gain_c.h 324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REVISION HISTORY 354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Moved _cplusplus #ifdef after Include section. 374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Who: Date: 394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: 404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber INCLUDE DESCRIPTION 434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber File : d_gain_c.h 454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Purpose : Decode the fixed codebook gain using the received index. 464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber*/ 494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifndef _D_GAIN_C_H_ 514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#define _D_GAIN_C_H_ 524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#define d_gain_c_h "$Id $" 534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; INCLUDES 564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "typedef.h" 584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "mode.h" 594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "gc_pred.h" 604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*--------------------------------------------------------------------------*/ 624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifdef __cplusplus 634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huberextern "C" 644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif 664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; MACROS 694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; [Define module specific macros here] 704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; DEFINES 744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; [Include all pre-processor statements here.] 754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; EXTERNAL VARIABLES REFERENCES 804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; [Declare variables used in this module but defined elsewhere] 814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; SIMPLE TYPEDEF'S 854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; ENUMERATED TYPEDEF'S 894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; STRUCTURES TYPEDEF'S 934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; GLOBAL FUNCTION DEFINITIONS 984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; [List function prototypes here] 994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 1004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* 1014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Function : d_gain_code 1024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Purpose : Decode the fixed codebook gain using the received index. 1034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Description : The received index gives the gain correction factor 1044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * gamma. The quantized gain is given by g_q = g0 * gamma 1054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * where g0 is the predicted gain. To find g0, 4th order 1064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * MA prediction is applied to the mean-removed innovation 1074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * energy in dB. 1084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Returns : void 1094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber */ 1104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber void d_gain_code( 1114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber gc_predState *pred_state, /* i/o : MA predictor state */ 1124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber enum Mode mode, /* i : AMR mode */ 1134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 index, /* i : received quantization index */ 1144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 code[], /* i : innovation codevector */ 1154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 *gain_code, /* o : decoded innovation gain */ 1164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Flag *pOverflow 1174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ); 1184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifdef __cplusplus 1204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber} 1214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif 1224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif /* _D_GAIN_C_H_ */ 1244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 126