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/dec_lag3.c 354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Functions: Dec_lag3 364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Date: 01/31/2002 384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REVISION HISTORY 414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: 434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber (1) Updated to accept new parameter, Flag *pOverflow. 444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber (2) Placed file in the proper PV Software template. 454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: 474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber (1) Removed "count.h" and "basic_op.h" and replaced with individual include 484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber files (add.h, sub.h, etc.) 494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: 514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber (1) Removed optimization -- mult(i, 3, pOverflow) is NOT the same as adding 524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i to itself 3 times. The reason is because the mult function does a 534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber right shift by 15, which will obliterate smaller numbers. 544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Replaced "int" and/or "char" with OSCL defined types. 564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: 584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ------------------------------------------------------------------------------ 604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber INPUT AND OUTPUT DEFINITIONS 614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs: 634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber index -- Word16 -- received pitch index 644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber t0_min -- Word16 -- minimum of search range 654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber t0_max -- Word16 -- maximum of search range 664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i_subfr -- Word16 -- subframe flag 674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber T0_prev -- Word16 -- integer pitch delay of last subframe 684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber used in 2nd and 4th subframes 694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber flag4 -- Word16 -- flag for encoding with 4 bits 704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Outputs: 724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber T0 -- Pointer to type Word16 -- integer part of pitch lag 744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber T0_frac -- Pointer to type Word16 -- fractional part of pitch lag 754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow -- Pointer to type Flag -- Flag set when overflow occurs 764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Returns: 784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None. 794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Global Variables Used: 814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Local Variables Needed: 844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ) 884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber FUNCTION DESCRIPTION 904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber PURPOSE: Decoding of fractional pitch lag with 1/3 resolution. 924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Extract the integer and fraction parts of the pitch lag from 934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber the received adaptive codebook index. 944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber See "Enc_lag3.c" for more details about the encoding procedure. 964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber The fractional lag in 1st and 3rd subframes is encoded with 8 bits 984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber while that in 2nd and 4th subframes is relatively encoded with 4, 5 994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber and 6 bits depending on the mode. 1004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REQUIREMENTS 1034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REFERENCES 1084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber dec_lag3.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 1104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber PSEUDO-CODE 1134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber RESOURCES USED 1184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber When the code is written for a specific target processor the 1194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber the resources used should be documented below. 1204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber STACK USAGE: [stack count for this module] + [variable to represent 1224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber stack usage for each subroutine called] 1234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber where: [stack usage variable] = stack usage for [subroutine 1254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber name] (see [filename].ext) 1264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber DATA MEMORY USED: x words 1284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber PROGRAM MEMORY USED: x words 1304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber CLOCK CYCLES: [cycle count equation for this module] + [variable 1324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber used to represent cycle count for each subroutine 1334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber called] 1344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber where: [cycle count variable] = cycle count for [subroutine 1364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber name] (see [filename].ext) 1374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber*/ 1404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 1434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; INCLUDES 1444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "dec_lag3.h" 1464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "typedef.h" 1474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "basic_op.h" 1484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 1504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; MACROS 1514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Define module specific macros here 1524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 1564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; DEFINES 1574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Include all pre-processor statements here. Include conditional 1584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; compile variables also. 1594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 1624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; LOCAL FUNCTION DEFINITIONS 1634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Function Prototype declaration 1644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 1684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; LOCAL STORE/BUFFER/POINTER DEFINITIONS 1694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Variable declaration - defined here and used outside this module 1704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 1734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; EXTERNAL FUNCTION REFERENCES 1744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Declare functions defined elsewhere and referenced in this module 1754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 1784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES 1794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Declare variables used in this module but defined elsewhere 1804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 1834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; FUNCTION CODE 1844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Hubervoid Dec_lag3(Word16 index, /* i : received pitch index */ 1874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 t0_min, /* i : minimum of search range */ 1884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 t0_max, /* i : maximum of search range */ 1894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 i_subfr, /* i : subframe flag */ 1904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 T0_prev, /* i : integer pitch delay of last subframe 1914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber used in 2nd and 4th subframes */ 1924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 * T0, /* o : integer part of pitch lag */ 1934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 * T0_frac, /* o : fractional part of pitch lag */ 1944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 flag4, /* i : flag for encoding with 4 bits */ 1954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Flag *pOverflow /* o : Flag set when overflow occurs */ 1964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ) 1974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 1984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 i; 1994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 tmp_lag; 2004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (i_subfr == 0) /* if 1st or 3rd subframe */ 2024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (index < 197) 2054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag = index + 2; 2084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag = 2104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber mult( 2114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag, 2124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 10923, 2134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i = 2164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber add( 2174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag, 2184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 19, 2194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *T0 = i; 2224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* i = 3 * (*T0) */ 2244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i = add(i, i, pOverflow); 2264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i = add(i, *T0, pOverflow); 2274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag = 2294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber sub( 2304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber index, 2314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i, 2324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *T0_frac = 2354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber add( 2364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag, 2374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 58, 2384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else 2414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *T0 = index - 112; 2434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *T0_frac = 0; 2454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else 2494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { /* 2nd or 4th subframe */ 2504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (flag4 == 0) 2524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* 'normal' decoding: either with 5 or 6 bit resolution */ 2554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i = 2574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber add( 2584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber index, 2594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2, 2604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i = 2634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber mult( 2644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i, 2654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 10923, 2664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i = 2694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber sub( 2704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i, 2714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1, 2724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *T0 = 2754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber add( 2764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i, 2774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber t0_min, 2784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* i = 3* (*T0) */ 2814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i = add(add(i, i, pOverflow), i, pOverflow); 2824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag = 2844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber sub( 2854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber index, 2864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2, 2874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *T0_frac = 2904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber sub( 2914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag, 2924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i, 2934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else 2964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* decoding with 4 bit resolution */ 2994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag = T0_prev; 3014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i = 3034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber sub( 3044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag, 3054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber t0_min, 3064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 3074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (i > 5) 3094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag = 3114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber add( 3124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber t0_min, 3134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5, 3144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 3154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i = 3184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber sub( 3194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber t0_max, 3204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag, 3214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 3224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (i > 4) 3244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag = 3264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber sub( 3274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber t0_max, 3284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4, 3294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 3304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (index < 4) 3334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i = 3354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber sub( 3364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag, 3374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5, 3384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 3394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *T0 = 3414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber add( 3424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i, 3434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber index, 3444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 3454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *T0_frac = 0; 3474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else 3494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* 4 >= index < 12 */ 3514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (index < 12) 3524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i = index - 5; 3544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i = mult( 3564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i, 3574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 10923, 3584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 3594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i--; 3614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *T0 = add( 3634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i, 3644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag, 3654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 3664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i = add( 3684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber add( 3694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i, 3704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i, 3714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow), 3724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i, 3734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 3744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag = index - 9; 3764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *T0_frac = 3784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber sub( 3794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag, 3804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i, 3814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 3824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else 3844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i = index - 12; 3864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i = 3884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber add( 3894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i, 3904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tmp_lag, 3914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 3924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *T0 = 3944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber add( 3954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i, 3964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1, 3974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 3984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *T0_frac = 0; 4004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 4014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 4024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } /* end if (decoding with 4 bit resolution) */ 4044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 4054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return; 4074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber} 408