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 Pathname: ./audio/gsm-amr/c/src/lsp_avg.c 354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Functions: 364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Date: 04/14/2000 394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REVISION HISTORY 424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Removed the functions lsp_avg_init and lsp_avg_exit. 444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber The lsp_avg related structure is no longer dynamically allocated. 454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Also, placed code in the proper PV Software Template. 474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Per review comments, updated the inputs/outputs section 494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber for the function lsp_avg. 504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Changed to accept the pOverflow flag for EPOC compatibility. 524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Per review comments, I added a description of pOverflow 544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber to the input/output section of the template. I also removed an unnecessary 554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber include file, <stdio.h> 564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Removed q_plsf_5.tab from Include section and added 584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber q_plsf_5_tbl.h to Include section. Changed "mean_lsf" 594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber to "mean_lsf_5" in lsp_avg_reset(). 604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Replaced OSCL mem type functions and eliminated include 624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber files that now are chosen by OSCL definitions 634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Replaced "int" and/or "char" with OSCL defined types. 654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Changed round function name to pv_round to avoid conflict with 674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber round function in C standard library. 684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: 704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MODULE DESCRIPTION 734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber LSP averaging and history 754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber*/ 774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; INCLUDES 804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "lsp_avg.h" 824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "basic_op.h" 834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "oper_32b.h" 844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "copy.h" 854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "q_plsf_5_tbl.h" 864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; MACROS 894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Define module specific macros here 904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; DEFINES 944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Include all pre-processor statements here. Include conditional 954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; compile variables also. 964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; LOCAL FUNCTION DEFINITIONS 1004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Function Prototype declaration 1014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 1044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; LOCAL VARIABLE DEFINITIONS 1054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Variable declaration - defined here and used outside this module 1064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 1094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; EXTERNAL FUNCTION REFERENCES 1104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Declare functions defined elsewhere and referenced in this module 1114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 1144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; EXTERNAL VARIABLES REFERENCES 1154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Declare variables used in this module but defined elsewhere 1164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* 1194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber FUNCTION NAME: lsp_avg_reset 1214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber INPUT AND OUTPUT DEFINITIONS 1234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs: 1254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber st = pointer to structure of type lsp_avgState 1264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Outputs: 1284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber fields of the structure pointed to by state are initialized. 1294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Returns: 1314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return_value = 0, if reset was successful; -1, otherwise (int) 1324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Global Variables Used: 1344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 1354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Local Variables Needed: 1374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 1384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber FUNCTION DESCRIPTION 1414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REQUIREMENTS 1454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 1474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REFERENCES 1504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huberlsp_avg.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 1524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber PSEUDO-CODE 1554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huberint lsp_avg_reset (lsp_avgState *st) 1574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 1584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (st == (lsp_avgState *) NULL){ 1594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber // fprintf(stderr, "lsp_avg_reset: invalid parameter\n"); 1604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return -1; 1614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Copy(mean_lsf, &st->lsp_meanSave[0], M); 1644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return 0; 1664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber} 1674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber RESOURCES USED [optional] 1704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber When the code is written for a specific target processor the 1724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber the resources used should be documented below. 1734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber HEAP MEMORY USED: x bytes 1754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber STACK MEMORY USED: x bytes 1774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber CLOCK CYCLES: (cycle count equation for this function) + (variable 1794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber used to represent cycle count for each subroutine 1804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber called) 1814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber where: (cycle count variable) = cycle count for [subroutine 1824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber name] 1834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber CAUTION [optional] 1864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber [State any special notes, constraints or cautions for users of this function] 1874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber*/ 1904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas HuberWord16 lsp_avg_reset(lsp_avgState *st) 1924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 1934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (st == (lsp_avgState *) NULL) 1944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* fprintf(stderr, "lsp_avg_reset: invalid parameter\n"); */ 1964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return -1; 1974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Copy(mean_lsf_5, &st->lsp_meanSave[0], M); 2004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return 0; 2024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber} 2034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* 2064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 2074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber FUNCTION NAME: lsp_avg 2084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 2094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber INPUT AND OUTPUT DEFINITIONS 2104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs: 2124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber st = pointer to structure of type lsp_avgState 2134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber lsp = pointer to Word16, which reflects the state of the state machine 2144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Outputs: 2164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber st = pointer to structure of type lsp_avgState 2174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow = pointer to type Flag -- overflow indicator 2184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Returns: 2204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 2214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Global Variables Used: 2234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 2244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Local Variables Needed: 2264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 2274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 2294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber FUNCTION DESCRIPTION 2304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 2334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REQUIREMENTS 2344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 2364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 2384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REFERENCES 2394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huberlsp_avg.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 2414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 2434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber PSEUDO-CODE 2444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Hubervoid lsp_avg ( 2474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber lsp_avgState *st, // i/o : State struct Q15 2484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 *lsp // i : state of the state machine Q15 2494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber) 2504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 2514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 i; 2524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word32 L_tmp; // Q31 2534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber for (i = 0; i < M; i++) { 2554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber // mean = 0.84*mean 2574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_tmp = L_deposit_h(st->lsp_meanSave[i]); 2584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_tmp = L_msu(L_tmp, EXPCONST, st->lsp_meanSave[i]); 2594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber // Add 0.16 of newest LSPs to mean 2614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_tmp = L_mac(L_tmp, EXPCONST, lsp[i]); 2624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber // Save means 2644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber st->lsp_meanSave[i] = pv_round(L_tmp); // Q15 2654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return; 2684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber} 2694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 2714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber RESOURCES USED [optional] 2724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber When the code is written for a specific target processor the 2744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber the resources used should be documented below. 2754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber HEAP MEMORY USED: x bytes 2774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber STACK MEMORY USED: x bytes 2794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber CLOCK CYCLES: (cycle count equation for this function) + (variable 2814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber used to represent cycle count for each subroutine 2824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber called) 2834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber where: (cycle count variable) = cycle count for [subroutine 2844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber name] 2854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 2874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber CAUTION [optional] 2884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber [State any special notes, constraints or cautions for users of this function] 2894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 2914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber*/ 2924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Hubervoid lsp_avg( 2944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber lsp_avgState *st, /* i/o : State struct Q15 */ 2954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 *lsp, /* i : state of the state machine Q15 */ 2964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Flag *pOverflow /* o : Flag set when overflow occurs */ 2974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber) 2984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 2994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 i; 3004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word32 L_tmp; /* Q31 */ 3014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber for (i = 0; i < M; i++) 3034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* mean = 0.84*mean */ 3064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_tmp = L_deposit_h(st->lsp_meanSave[i]); 3074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_tmp = L_msu(L_tmp, EXPCONST, st->lsp_meanSave[i], pOverflow); 3084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* Add 0.16 of newest LSPs to mean */ 3104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_tmp = L_mac(L_tmp, EXPCONST, lsp[i], pOverflow); 3114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* Save means */ 3134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber st->lsp_meanSave[i] = pv_round(L_tmp, pOverflow); /* Q15 */ 3144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return; 3174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber} 318