1d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber/* ------------------------------------------------------------------ 2d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * Copyright (C) 1998-2009 PacketVideo 3d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * 4d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 5d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * you may not use this file except in compliance with the License. 6d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * You may obtain a copy of the License at 7d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * 8d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 9d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * 10d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * Unless required by applicable law or agreed to in writing, software 11d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 12d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 13d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * express or implied. 14d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * See the License for the specific language governing permissions 15d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * and limitations under the License. 16d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * ------------------------------------------------------------------- 17d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber */ 18d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber/**************************************************************************************** 19d49b526dd2009270cb15f7fe4e70b74673950608Andreas HuberPortions of this file are derived from the following 3GPP standard: 20d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 21d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 3GPP TS 26.073 22d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec 23d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Available from http://www.3gpp.org 24d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 25d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) 26d49b526dd2009270cb15f7fe4e70b74673950608Andreas HuberPermission to distribute, modify and use this file under the standard license 27d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huberterms listed above has been obtained from the copyright holder. 28d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber****************************************************************************************/ 29d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber/* 30d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 31d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 32d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 33d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 34d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Pathname: ./audio/gsm-amr/c/src/cl_ltp.c 35d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Funtions: cl_ltp_init 36d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber cl_ltp_reset 37d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber cl_ltp_exit 38d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber cl_ltp 39d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 40d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Date: 06/07/2000 41d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 42d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 43d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber REVISION HISTORY 44d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 45d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Description: Placed into PV template and optimized. 46d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 47d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Description: Synchronized file with UMTS version 3.2.0. Updated coding 48d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber template. Removed unnecessary include files. 49d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 50d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Description: Removed basic_op.h and oper_32b.h in the include section, and 51d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber added basicop_malloc.h. 52d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 53d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Description: Fixed typecasting issue in TI C compiler. 54d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 55d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Description: Added pOverflow parameter -- fixed minor template problem. 56d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 57d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Description: 58d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 1. Eliminated unused include file typedef.h. 59d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 2. Replaced array addressing by pointers 60d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 3. Eliminated if-else checks for saturation 61d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 62d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Description: Replaced OSCL mem type functions and eliminated include 63d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber files that now are chosen by OSCL definitions 64d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 65d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Description: Replaced "int" and/or "char" with OSCL defined types. 66d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 67d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Description: 68d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 69d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 70d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber MODULE DESCRIPTION 71d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 72d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber This file contains functions that perform closed-loop fractional pitch 73d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber search. 74d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 75d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 76d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber*/ 77d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 78d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 79d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber/*---------------------------------------------------------------------------- 80d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber; INCLUDES 81d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber----------------------------------------------------------------------------*/ 82d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber#include <stdlib.h> 83d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 84d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber#include "cl_ltp.h" 85d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber#include "basicop_malloc.h" 86d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber#include "cnst.h" 87d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber#include "convolve.h" 88d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber#include "g_pitch.h" 89d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber#include "pred_lt.h" 90d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber#include "pitch_fr.h" 91d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber#include "enc_lag3.h" 92d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber#include "enc_lag6.h" 93d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber#include "q_gain_p.h" 94d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber#include "ton_stab.h" 95d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 96d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber/*---------------------------------------------------------------------------- 97d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber; MACROS 98d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber; Define module specific macros here 99d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber----------------------------------------------------------------------------*/ 100d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 101d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 102d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber/*---------------------------------------------------------------------------- 103d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber; DEFINES 104d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber; Include all pre-processor statements here. Include conditional 105d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber; compile variables also. 106d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber----------------------------------------------------------------------------*/ 107d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 108d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 109d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber/*---------------------------------------------------------------------------- 110d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber; LOCAL FUNCTION DEFINITIONS 111d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber; Function Prototype declaration 112d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber----------------------------------------------------------------------------*/ 113d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 114d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber/*---------------------------------------------------------------------------- 115d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber; LOCAL VARIABLE DEFINITIONS 116d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber; Variable declaration - defined here and used outside this module 117d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber----------------------------------------------------------------------------*/ 118d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 119d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 120d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber/* 121d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 122d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber FUNCTION NAME: cl_ltp_init 123d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 124d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber INPUT AND OUTPUT DEFINITIONS 125d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 126d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Inputs: 127d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber state = Pointer to a pointer to a clLtpState structure 128d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 129d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Outputs: 130d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber state points to the newly created clLtpState structure. 131d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 132d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Returns: 133d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber This function returns 0 upon success and -1 upon failure. 134d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 135d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Global Variables Used: 136d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber None 137d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 138d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Local Variables Needed: 139d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber None 140d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 141d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 142d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber FUNCTION DESCRIPTION 143d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 144d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Allocates state memory and initializes state memory 145d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 146d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 147d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber REQUIREMENTS 148d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 149d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber None. 150d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 151d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 152d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber REFERENCES 153d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 154d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber cl_ltp.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 155d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 156d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 157d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber PSEUDO-CODE 158d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 159d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huberint cl_ltp_init (clLtpState **state) 160d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber{ 161d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber clLtpState* s; 162d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 163d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if (state == (clLtpState **) NULL){ 164d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber fprintf(stderr, "cl_ltp_init: invalid parameter\n"); 165d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return -1; 166d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 167d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *state = NULL; 168d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 169d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber // allocate memory 170d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if ((s= (clLtpState *) malloc(sizeof(clLtpState))) == NULL){ 171d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber fprintf(stderr, "cl_ltp_init: can not malloc state structure\n"); 172d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return -1; 173d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 174d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 175d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber // init the sub state 176d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if (Pitch_fr_init(&s->pitchSt)) { 177d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber cl_ltp_exit(&s); 178d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return -1; 179d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 180d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 181d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber cl_ltp_reset(s); 182d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 183d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *state = s; 184d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 185d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return 0; 186d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber} 187d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 188d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 189d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 190d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber RESOURCES USED [optional] 191d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 192d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber When the code is written for a specific target processor the 193d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber the resources used should be documented below. 194d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 195d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber HEAP MEMORY USED: x bytes 196d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 197d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber STACK MEMORY USED: x bytes 198d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 199d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber CLOCK CYCLES: (cycle count equation for this function) + (variable 200d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber used to represent cycle count for each subroutine 201d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber called) 202d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber where: (cycle count variable) = cycle count for [subroutine 203d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber name] 204d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 205d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 206d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber CAUTION [optional] 207d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber [State any special notes, constraints or cautions for users of this function] 208d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 209d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 210d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber*/ 211d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 212d49b526dd2009270cb15f7fe4e70b74673950608Andreas HuberWord16 cl_ltp_init(clLtpState **state) 213d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber{ 214d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber clLtpState* s; 215d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 216d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if (state == (clLtpState **) NULL) 217d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber { 218d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber /*fprint(stderr, "cl_ltp_init: invalid parameter\n");*/ 219d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return(-1); 220d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 221d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *state = NULL; 222d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 223d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber /* allocate memory */ 224d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if ((s = (clLtpState *) malloc(sizeof(clLtpState))) == NULL) 225d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber { 226d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber /*fprint(stderr, "cl_ltp_init: can not malloc state structure\n");*/ 227d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return(-1); 228d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 229d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 230d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber /* init the sub state */ 231d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if (Pitch_fr_init(&s->pitchSt)) 232d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber { 233d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber cl_ltp_exit(&s); 234d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return(-1); 235d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 236d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 237d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber cl_ltp_reset(s); 238d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 239d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *state = s; 240d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 241d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return(0); 242d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber} 243d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 244d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber/****************************************************************************/ 245d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 246d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber/* 247d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 248d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber FUNCTION NAME: cl_ltp_reset 249d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 250d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber INPUT AND OUTPUT DEFINITIONS 251d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 252d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Inputs: 253d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber state = pointer to the clLtpState structure to be reset 254d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 255d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Outputs: 256d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber The state structure pointed to by clLtpState *state is reset. 257d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 258d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Returns: 259d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber The function returns int 0 if successful, -1 otherwise. 260d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 261d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Global Variables Used: 262d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber None 263d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 264d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Local Variables Needed: 265d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber None 266d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 267d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 268d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber FUNCTION DESCRIPTION 269d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 270d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Initializes state memory to zero. 271d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 272d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 273d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber REQUIREMENTS 274d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 275d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 276d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber REFERENCES 277d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 278d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber cl_ltp.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 279d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 280d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber ------------------------------------------------------------------------------ 281d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber PSEUDO-CODE 282d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 283d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huberint cl_ltp_reset (clLtpState *state) 284d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber{ 285d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if (state == (clLtpState *) NULL){ 286d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber fprintf(stderr, "cl_ltp_reset: invalid parameter\n"); 287d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return -1; 288d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 289d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 290d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber // Reset pitch search states 291d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Pitch_fr_reset (state->pitchSt); 292d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 293d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return 0; 294d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber} 295d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 296d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 297d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber RESOURCES USED [optional] 298d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 299d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber When the code is written for a specific target processor the 300d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber the resources used should be documented below. 301d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 302d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber HEAP MEMORY USED: x bytes 303d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 304d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber STACK MEMORY USED: x bytes 305d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 306d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber CLOCK CYCLES: (cycle count equation for this function) + (variable 307d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber used to represent cycle count for each subroutine 308d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber called) 309d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber where: (cycle count variable) = cycle count for [subroutine 310d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber name] 311d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 312d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 313d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber CAUTION [optional] 314d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber [State any special notes, constraints or cautions for users of this function] 315d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 316d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 317d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber*/ 318d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 319d49b526dd2009270cb15f7fe4e70b74673950608Andreas HuberWord16 cl_ltp_reset(clLtpState *state) 320d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber{ 321d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if (state == (clLtpState *) NULL) 322d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber { 323d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber /*fprint(stderr, "cl_ltp_reset: invalid parameter\n"); */ 324d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return(-1); 325d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 326d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 327d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber /* Reset pitch search states */ 328d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Pitch_fr_reset(state->pitchSt); 329d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 330d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return(0); 331d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber} 332d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 333d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber/****************************************************************************/ 334d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 335d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber/* 336d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 337d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber FUNCTION NAME: cl_ltp_exit 338d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 339d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber INPUT AND OUTPUT DEFINITIONS 340d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 341d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Inputs: 342d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber clLtpState **state = Reference to the state object to be freed. 343d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 344d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Outputs: 345d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber The memory used by the structure which is pointed to by 'state' 346d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber is freed. 347d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 348d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Returns: 349d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber None 350d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 351d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Global Variables Used: 352d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber None 353d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 354d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Local Variables Needed: 355d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber None 356d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 357d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 358d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber FUNCTION DESCRIPTION 359d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 360d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber The memory used for state memory is freed 361d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 362d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 363d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 364d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber REQUIREMENTS 365d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 366d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber None 367d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 368d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 369d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber REFERENCES 370d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 371d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber cl_ltp.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 372d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 373d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 374d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber PSEUDO-CODE 375d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 376d49b526dd2009270cb15f7fe4e70b74673950608Andreas Hubervoid cl_ltp_exit (clLtpState **state) 377d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber{ 378d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if (state == NULL || *state == NULL) 379d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return; 380d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 381d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber // dealloc members 382d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Pitch_fr_exit(&(*state)->pitchSt); 383d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 384d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber // deallocate memory 385d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber free(*state); 386d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *state = NULL; 387d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 388d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return; 389d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber} 390d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 391d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 392d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber RESOURCES USED [optional] 393d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 394d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber When the code is written for a specific target processor the 395d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber the resources used should be documented below. 396d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 397d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber HEAP MEMORY USED: x bytes 398d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 399d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber STACK MEMORY USED: x bytes 400d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 401d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber CLOCK CYCLES: (cycle count equation for this function) + (variable 402d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber used to represent cycle count for each subroutine 403d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber called) 404d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber where: (cycle count variable) = cycle count for [subroutine 405d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber name] 406d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 407d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 408d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber CAUTION [optional] 409d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber [State any special notes, constraints or cautions for users of this function] 410d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 411d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 412d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber*/ 413d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 414d49b526dd2009270cb15f7fe4e70b74673950608Andreas Hubervoid cl_ltp_exit(clLtpState **state) 415d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber{ 416d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if (state == NULL || *state == NULL) 417d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber { 418d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return; 419d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 420d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 421d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber /* dealloc members */ 422d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Pitch_fr_exit(&(*state)->pitchSt); 423d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 424d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber /* deallocate memory */ 425d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber free(*state); 426d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *state = NULL; 427d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 428d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return; 429d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber} 430d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 431d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber/****************************************************************************/ 432d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 433d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber/* 434d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 435d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber FUNCTION NAME: cl_ltp 436d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 437d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber INPUT AND OUTPUT DEFINITIONS 438d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 439d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Inputs: 440d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber clSt = pointer to the clLtpState struct 441d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber tonSt = pointer to the tonStabState structure 442d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber mode = codec mode value, of type enum Mode 443d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber frameOffset = offset to subframe (Word16) 444d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber T_op = pointer to buffer of open loop pitch lags (Word16) 445d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber h1 = pointer to impulse response vector (Word16) 446d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber exc = pointer to excitation vector (Word16) 447d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber res2 = pointer to long term prediction residual (Word16) 448d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber xn = pointer to target vector for pitch search (Word16) 449d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber lsp_flag = LSP resonance flag (Word16) 450d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 451d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Outputs: 452d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber clSt = pointer to the clLtpState struct 453d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber tonSt = pointer to the tonStabState structure 454d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber exc = pointer to excitation vector (Word16) 455d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber res2 = pointer to long term prediction residual (Word16) 456d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber xn2 = pointer to target vector for codebook search (Word16) 457d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber yl = pointer to buffer of filtered adaptive excitation (Word16) 458d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber T0 = pointer to pitch delay (integer part) (Word16) 459d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber T0_frac = pointer to pitch delay (fractional part) (Word16) 460d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber gain_pit = pointer to pitch gain (Word16) 461d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber g_coeff = pointer to array of correlations between xn, y1, & y2 (Word16) 462d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber anap = pointer to pointer to analysis parameters (Word16) 463d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber gp_limit = pointer to the pitch gain limit (Word16) 464d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber pOverflow = pointer to overflow indicator (Flag) 465d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 466d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Returns: 467d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return_value = 0 (int) 468d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 469d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Global Variables Used: 470d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber None 471d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 472d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Local Variables Needed: 473d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber None 474d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 475d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 476d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber FUNCTION DESCRIPTION 477d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 478d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber This function performs closed-loop fractional pitch search. 479d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 480d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 481d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber REQUIREMENTS 482d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 483d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber None. 484d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 485d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 486d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber REFERENCES 487d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 488d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber cl_ltp.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 489d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 490d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 491d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber PSEUDO-CODE FOR cl_ltp 492d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 493d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huberint cl_ltp ( 494d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber clLtpState *clSt, // i/o : State struct 495d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber tonStabState *tonSt, // i/o : State struct 496d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber enum Mode mode, // i : coder mode 497d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 frameOffset, // i : Offset to subframe 498d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 T_op[], // i : Open loop pitch lags 499d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 *h1, // i : Impulse response vector Q12 500d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 *exc, // i/o : Excitation vector Q0 501d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 res2[], // i/o : Long term prediction residual Q0 502d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 xn[], // i : Target vector for pitch search Q0 503d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 lsp_flag, // i : LSP resonance flag 504d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 xn2[], // o : Target vector for codebook search Q0 505d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 y1[], // o : Filtered adaptive excitation Q0 506d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 *T0, // o : Pitch delay (integer part) 507d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 *T0_frac, // o : Pitch delay (fractional part) 508d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 *gain_pit, // o : Pitch gain Q14 509d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 g_coeff[], // o : Correlations between xn, y1, & y2 510d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 **anap, // o : Analysis parameters 511d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 *gp_limit // o : pitch gain limit 512d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber) 513d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber{ 514d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 i; 515d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 index; 516d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word32 L_temp; // temporarily variable 517d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 resu3; // flag for upsample resolution 518d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 gpc_flag; 519d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 520d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *----------------------------------------------------------------------* 521d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * Closed-loop fractional pitch search * 522d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *----------------------------------------------------------------------* 523d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *T0 = Pitch_fr(clSt->pitchSt, 524d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber mode, T_op, exc, xn, h1, 525d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber L_SUBFR, frameOffset, 526d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber T0_frac, &resu3, &index); 527d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 528d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *(*anap)++ = index; 529d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 530d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *-----------------------------------------------------------------* 531d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * - find unity gain pitch excitation (adapitve codebook entry) * 532d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * with fractional interpolation. * 533d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * - find filtered pitch exc. y1[]=exc[] convolve with h1[]) * 534d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * - compute pitch gain and limit between 0 and 1.2 * 535d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * - update target vector for codebook search * 536d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * - find LTP residual. * 537d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *-----------------------------------------------------------------* 538d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 539d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Pred_lt_3or6(exc, *T0, *T0_frac, L_SUBFR, resu3); 540d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 541d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Convolve(exc, h1, y1, L_SUBFR); 542d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 543d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber // gain_pit is Q14 for all modes 544d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *gain_pit = G_pitch(mode, xn, y1, g_coeff, L_SUBFR); 545d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 546d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 547d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber // check if the pitch gain should be limit due to resonance in LPC filter 548d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber gpc_flag = 0; 549d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *gp_limit = MAX_16; 550d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if ((lsp_flag != 0) && 551d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber (sub(*gain_pit, GP_CLIP) > 0)) 552d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber { 553d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber gpc_flag = check_gp_clipping(tonSt, *gain_pit); 554d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 555d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 556d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber // special for the MR475, MR515 mode; limit the gain to 0.85 to 557d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber // cope with bit errors in the decoder in a better way. 558d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if ((sub (mode, MR475) == 0) || (sub (mode, MR515) == 0)) { 559d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if ( sub (*gain_pit, 13926) > 0) { 560d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *gain_pit = 13926; // 0.85 in Q14 561d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 562d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 563d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if (gpc_flag != 0) { 564d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *gp_limit = GP_CLIP; 565d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 566d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 567d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber else 568d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber { 569d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if (gpc_flag != 0) 570d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber { 571d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *gp_limit = GP_CLIP; 572d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *gain_pit = GP_CLIP; 573d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 574d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber // For MR122, gain_pit is quantized here and not in gainQuant 575d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if (sub(mode, MR122)==0) 576d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber { 577d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *(*anap)++ = q_gain_pitch(MR122, *gp_limit, gain_pit, 578d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber NULL, NULL); 579d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 580d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 581d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 582d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber // update target vector und evaluate LTP residual 583d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber for (i = 0; i < L_SUBFR; i++) { 584d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber L_temp = L_mult(y1[i], *gain_pit); 585d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber L_temp = L_shl(L_temp, 1); 586d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber xn2[i] = sub(xn[i], extract_h(L_temp)); 587d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 588d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber L_temp = L_mult(exc[i], *gain_pit); 589d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber L_temp = L_shl(L_temp, 1); 590d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber res2[i] = sub(res2[i], extract_h(L_temp)); 591d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 592d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 593d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber return 0; 594d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber} 595d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 596d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 597d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber RESOURCES USED [optional] 598d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 599d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber When the code is written for a specific target processor the 600d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber the resources used should be documented below. 601d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 602d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber HEAP MEMORY USED: x bytes 603d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 604d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber STACK MEMORY USED: x bytes 605d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 606d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber CLOCK CYCLES: (cycle count equation for this function) + (variable 607d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber used to represent cycle count for each subroutine 608d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber called) 609d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber where: (cycle count variable) = cycle count for [subroutine 610d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber name] 611d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 612d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 613d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber CAUTION [optional] 614d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber [State any special notes, constraints or cautions for users of this function] 615d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 616d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber------------------------------------------------------------------------------ 617d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber*/ 618d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 619d49b526dd2009270cb15f7fe4e70b74673950608Andreas Hubervoid cl_ltp( 620d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber clLtpState *clSt, /* i/o : State struct */ 621d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber tonStabState *tonSt, /* i/o : State struct */ 622d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber enum Mode mode, /* i : coder mode */ 623d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 frameOffset, /* i : Offset to subframe */ 624d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 T_op[], /* i : Open loop pitch lags */ 625d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 *h1, /* i : Impulse response vector Q12 */ 626d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 *exc, /* i/o : Excitation vector Q0 */ 627d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 res2[], /* i/o : Long term prediction residual Q0 */ 628d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 xn[], /* i : Target vector for pitch search Q0 */ 629d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 lsp_flag, /* i : LSP resonance flag */ 630d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 xn2[], /* o : Target vector for codebook search Q0 */ 631d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 yl[], /* o : Filtered adaptive excitation Q0 */ 632d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 *T0, /* o : Pitch delay (integer part) */ 633d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 *T0_frac, /* o : Pitch delay (fractional part) */ 634d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 *gain_pit, /* o : Pitch gain Q14 */ 635d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 g_coeff[], /* o : Correlations between xn, y1, & y2 */ 636d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 **anap, /* o : Analysis parameters */ 637d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 *gp_limit, /* o : pitch gain limit */ 638d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Flag *pOverflow /* o : overflow indicator */ 639d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber) 640d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber{ 641d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber register Word16 i; 642d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 index; 643d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word32 L_temp; /* temporarily variable */ 644d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 resu3; /* flag for upsample resolution */ 645d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 gpc_flag; 646d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 647d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 temp; 648d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 *p_exc; 649d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 *p_xn; 650d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 *p_xn2; 651d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Word16 *p_yl; 652d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 653d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber /*----------------------------------------------------------------------* 654d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * Closed-loop fractional pitch search * 655d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *----------------------------------------------------------------------*/ 656d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *T0 = 657d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Pitch_fr( 658d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber clSt->pitchSt, 659d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber mode, 660d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber T_op, 661d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber exc, 662d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber xn, 663d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber h1, 664d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber L_SUBFR, 665d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber frameOffset, 666d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber T0_frac, 667d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber &resu3, 668d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber &index, 669d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber pOverflow); 670d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 671d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *(*anap)++ = index; 672d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 673d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber /*-----------------------------------------------------------------* 674d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * - find unity gain pitch excitation (adapitve codebook entry) * 675d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * with fractional interpolation. * 676d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * - find filtered pitch exc. y1[]=exc[] convolve with h1[]) * 677d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * - compute pitch gain and limit between 0 and 1.2 * 678d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * - update target vector for codebook search * 679d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber * - find LTP residual. * 680d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *-----------------------------------------------------------------*/ 681d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 682d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Pred_lt_3or6( 683d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber exc, 684d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *T0, 685d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *T0_frac, 686d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber L_SUBFR, 687d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber resu3, 688d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber pOverflow); 689d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 690d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber Convolve(exc, h1, yl, L_SUBFR); 691d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 692d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber /* gain_pit is Q14 for all modes */ 693d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *gain_pit = 694d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber G_pitch( 695d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber mode, 696d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber xn, 697d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber yl, 698d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber g_coeff, 699d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber L_SUBFR, 700d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber pOverflow); 701d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 702d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 703d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber /* check if the pitch gain should be limit due to resonance in LPC filter */ 704d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber gpc_flag = 0; 705d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *gp_limit = MAX_16; 706d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 707d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if ((lsp_flag != 0) && ((Word32)(*gain_pit) > GP_CLIP)) 708d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber { 709d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber gpc_flag = check_gp_clipping(tonSt, *gain_pit, pOverflow); 710d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 711d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 712d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber /* special for the MR475, MR515 mode; limit the gain to 0.85 to */ 713d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber /* cope with bit errors in the decoder in a better way. */ 714d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 715d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if ((mode == MR475) || (mode == MR515)) 716d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber { 717d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *gain_pit = ((Word32) * gain_pit > 13926) ? 13926 : *gain_pit; 718d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 719d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if (gpc_flag != 0) 720d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber { 721d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *gp_limit = GP_CLIP; 722d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 723d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 724d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber else 725d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber { 726d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if (gpc_flag != 0) 727d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber { 728d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *gp_limit = GP_CLIP; 729d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *gain_pit = GP_CLIP; 730d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 731d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber /* For MR122, gain_pit is quantized here and not in gainQuant */ 732d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber if (mode == MR122) 733d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber { 734d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *(*anap)++ = 735d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber q_gain_pitch( 736d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber MR122, 737d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *gp_limit, 738d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber gain_pit, 739d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber NULL, 740d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber NULL, 741d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber pOverflow); 742d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 743d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 744d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 745d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 746d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber p_exc = &exc[0]; 747d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber p_xn = &xn[0]; 748d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber p_xn2 = &xn2[0]; 749d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber p_yl = &yl[0]; 750d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 751d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber temp = *gain_pit; 752d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 753d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber /* update target vector und evaluate LTP residual */ 754d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber for (i = 0; i < L_SUBFR; i++) 755d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber { 756d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber L_temp = ((Word32) * (p_yl++) * temp) >> 14; 757d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber *(p_xn2++) = *(p_xn++) - (Word16)L_temp; 758d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 759d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber L_temp = ((Word32) * (p_exc++) * temp) >> 14; 760d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber res2[i] -= (Word16)L_temp; 761d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber } 762d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber 763d49b526dd2009270cb15f7fe4e70b74673950608Andreas Huber} 764