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/d8_31pf.c 354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Functions: 364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Date: 01/28/2002 394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REVISION HISTORY 424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Modified to pass overflow flag through to basic math function. 444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber The flag is passed back to the calling function by pointer reference. 454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Per review comments... 474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber (1) Removed include of "count.h" and "basic_op.h" 484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber (2) Added includes of mult.h, shl.h, shr.h, add.h, sub.h, negate.h, 494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_mult.h, and L_shr.h 504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Replaced "int" and/or "char" with OSCL defined types. 524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: 544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MODULE DESCRIPTION 574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber*/ 584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; INCLUDES 614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "d8_31pf.h" 634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "typedef.h" 644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "basic_op.h" 654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "cnst.h" 664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; MACROS 704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Define module specific macros here 714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; DEFINES 754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Include all pre-processor statements here. Include conditional 764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; compile variables also. 774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#define NB_PULSE 8 /* number of pulses */ 794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* define values/representation for output codevector and sign */ 814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#define POS_CODE 8191 824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#define NEG_CODE 8191 834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; LOCAL FUNCTION DEFINITIONS 874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Function Prototype declaration 884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; LOCAL VARIABLE DEFINITIONS 924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Variable declaration - defined here and used outside this module 934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* 964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber FUNCTION NAME: decompress10 984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber INPUT AND OUTPUT DEFINITIONS 1004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs: 1024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs -- Word16 -- MSB part of the index 1034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber LSBs -- Word16 -- LSB part of the index 1044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber index1 -- Word16 -- index for first pos in pos_index[] 1054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber index2 -- Word16 -- index for second pos in pos_index[] 1064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber index3 -- Word16 -- index for third pos in pos_index[] 1074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Outputs: 1094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pos_indx[] -- array of type Word16 -- position of 3 pulses (decompressed) 1104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow Flag set when overflow occurs, pointer of type Flag * 1124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Returns: 1144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 1154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Global Variables Used: 1174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 1184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Local Variables Needed: 1204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 1214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber FUNCTION DESCRIPTION 1244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REQUIREMENTS 1284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 1304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REFERENCES 1334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber d8_31pf.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 1354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber PSEUDO-CODE 1384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber RESOURCES USED [optional] 1424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber When the code is written for a specific target processor the 1444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber the resources used should be documented below. 1454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber HEAP MEMORY USED: x bytes 1474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber STACK MEMORY USED: x bytes 1494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber CLOCK CYCLES: (cycle count equation for this function) + (variable 1514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber used to represent cycle count for each subroutine 1524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber called) 1534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber where: (cycle count variable) = cycle count for [subroutine 1544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber name] 1554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber CAUTION [optional] 1584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber [State any special notes, constraints or cautions for users of this function] 1594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber*/ 1624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huberstatic void decompress10( 1644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 MSBs, /* i : MSB part of the index */ 1654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 LSBs, /* i : LSB part of the index */ 1664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 index1, /* i : index for first pos in pos_index[] */ 1674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 index2, /* i : index for second pos in pos_index[] */ 1684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 index3, /* i : index for third pos in pos_index[] */ 1694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 pos_indx[], /* o : position of 3 pulses (decompressed) */ 1704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Flag *pOverflow) /* o : Flag set when overflow occurs */ 1714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 1724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 ia; 1734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 ib; 1744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 ic; 1754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word32 tempWord32; 1764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* 1784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pos_indx[index1] = ((MSBs-25*(MSBs/25))%5)*2 + (LSBs-4*(LSBs/4))%2; 1794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pos_indx[index2] = ((MSBs-25*(MSBs/25))/5)*2 + (LSBs-4*(LSBs/4))/2; 1804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pos_indx[index3] = (MSBs/25)*2 + LSBs/4; 1814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber */ 1824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (MSBs > 124) 1844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs = 124; 1864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ia = 1894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber mult( 1904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs, 1914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1311, 1924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 1934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tempWord32 = 1954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_mult( 1964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ia, 1974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 25, 1984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 1994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ia = (Word16)(MSBs - (tempWord32 >> 1)); 2024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ib = 2034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber mult( 2044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ia, 2054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 6554, 2064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tempWord32 = 2094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_mult( 2104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ib, 2114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5, 2124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ib = ia - (Word16)(tempWord32 >> 1); 2154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ib = 2174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber shl( 2184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ib, 2194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1, 2204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ic = LSBs - ((LSBs >> 2) << 2); 2244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pos_indx[index1] = ib + (ic & 1); 2274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ib = 2304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber mult( 2314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ia, 2324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 6554, 2334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ib = 2364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber shl( 2374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ib, 2384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1, 2394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pos_indx[index2] = ib + (ic >> 1); 2434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ib = LSBs >> 2; 2464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ic = 2484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber mult( 2494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs, 2504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1311, 2514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ic = 2544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber shl( 2554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ic, 2564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1, 2574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pos_indx[index3] = 2604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber add( 2614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ib, 2624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ic, 2634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 2644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return; 2664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber} 2674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* 2704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 2714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber FUNCTION NAME: decompress_code 2724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 2734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber INPUT AND OUTPUT DEFINITIONS 2744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs: 2764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber indx[] -- array of type Word16 -- position and sign of 2774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 8 pulses (compressed) 2784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Outputs: 2804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber sign_indx[] -- array of type Word16 -- signs of 4 pulses (signs only) 2814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pos_indx[] -- array of type Word16 -- position index of 8 pulses 2824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber (position only) 2834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow pointer to type Flag -- Flag set when overflow occurs 2844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Returns: 2864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 2874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Global Variables Used: 2894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 2904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Local Variables Needed: 2924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 2934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 2954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber FUNCTION DESCRIPTION 2964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber PURPOSE: decompression of the linear codewords to 4+three indeces 2984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber one bit from each pulse is made robust to errors by 2994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber minimizing the phase shift of a bit error. 3004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4 signs (one for each track) 3014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i0,i4,i1 => one index (7+3) bits, 3 LSBs more robust 3024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i2,i6,i5 => one index (7+3) bits, 3 LSBs more robust 3034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber i3,i7 => one index (5+2) bits, 2-3 LSbs more robust 3044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 3064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REQUIREMENTS 3074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 3094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 3114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REFERENCES 3124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber d8_31pf.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 3144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 3164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber PSEUDO-CODE 3174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 3204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber RESOURCES USED [optional] 3214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber When the code is written for a specific target processor the 3234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber the resources used should be documented below. 3244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber HEAP MEMORY USED: x bytes 3264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber STACK MEMORY USED: x bytes 3284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber CLOCK CYCLES: (cycle count equation for this function) + (variable 3304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber used to represent cycle count for each subroutine 3314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber called) 3324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber where: (cycle count variable) = cycle count for [subroutine 3334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber name] 3344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 3364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber CAUTION [optional] 3374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber [State any special notes, constraints or cautions for users of this function] 3384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 3404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber*/ 3414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huberstatic void decompress_code( 3434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 indx[], /* i : position and sign of 8 pulses (compressed) */ 3444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 sign_indx[], /* o : signs of 4 pulses (signs only) */ 3454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 pos_indx[], /* o : position index of 8 pulses (position only) */ 3464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Flag *pOverflow /* o : Flag set when overflow occurs */ 3474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber) 3484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 3494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 i; 3504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 ia; 3514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 ib; 3524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 MSBs; 3534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 LSBs; 3544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 MSBs0_24; 3554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word32 tempWord32; 3564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber for (i = 0; i < NB_TRACK_MR102; i++) 3584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber sign_indx[i] = indx[i]; 3604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* 3634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber First index: 10x10x10 -> 2x5x2x5x2x5-> 125x2x2x2 -> 7+1x3 bits 3644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs = indx[NB_TRACK]/8; 3654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber LSBs = indx[NB_TRACK]%8; 3664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber */ 3674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs = indx[NB_TRACK_MR102] >> 3; 3684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber LSBs = indx[NB_TRACK_MR102] & 0x7; 3704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber decompress10( 3724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs, 3734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber LSBs, 3744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 0, 3754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4, 3764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1, 3774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pos_indx, 3784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 3794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* 3814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Second index: 10x10x10 -> 2x5x2x5x2x5-> 125x2x2x2 -> 7+1x3 bits 3824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs = indx[NB_TRACK+1]/8; 3834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber LSBs = indx[NB_TRACK+1]%8; 3844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber */ 3854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs = indx[NB_TRACK_MR102+1] >> 3; 3864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber LSBs = indx[NB_TRACK_MR102+1] & 0x7; 3884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber decompress10( 3904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs, 3914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber LSBs, 3924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2, 3934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 6, 3944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5, 3954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pos_indx, 3964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 3974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* 3994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Third index: 10x10 -> 2x5x2x5-> 25x2x2 -> 5+1x2 bits 4004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs = indx[NB_TRACK+2]/4; 4014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber LSBs = indx[NB_TRACK+2]%4; 4024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs0_24 = (MSBs*25+12)/32; 4034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if ((MSBs0_24/5)%2==1) 4044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pos_indx[3] = (4-(MSBs0_24%5))*2 + LSBs%2; 4054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else 4064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pos_indx[3] = (MSBs0_24%5)*2 + LSBs%2; 4074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pos_indx[7] = (MSBs0_24/5)*2 + LSBs/2; 4084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber */ 4094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs = indx[NB_TRACK_MR102+2] >> 2; 4114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber LSBs = indx[NB_TRACK_MR102+2] & 0x3; 4134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tempWord32 = 4154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_mult( 4164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs, 4174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 25, 4184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 4194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ia = 4214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber (Word16) 4224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_shr( 4234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tempWord32, 4244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1, 4254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 4264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ia += 12; 4284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs0_24 = ia >> 5; 4304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ia = 4334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber mult( 4344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs0_24, 4354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 6554, 4364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 4374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ia &= 1; 4394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ib = 4424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber mult( 4434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs0_24, 4444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 6554, 4454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 4464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber tempWord32 = 4484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_mult( 4494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ib, 4504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5, 4514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 4524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ib = MSBs0_24 - (Word16)(tempWord32 >> 1); 4554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (ia == 1) 4574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 4584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ib = 4 - ib; 4594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 4614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ib = 4644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber shl( 4654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ib, 4664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1, 4674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 4684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ia = LSBs & 0x1; 4704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pos_indx[3] = 4724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber add( 4734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ib, 4744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ia, 4754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 4764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ia = 4784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber mult( 4794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MSBs0_24, 4804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 6554, 4814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 4824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ia = 4844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber shl( 4854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ia, 4864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1, 4874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 4884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pos_indx[7] = ia + (LSBs >> 1); 4904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber} 4924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* 4944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 4954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber FUNCTION NAME: dec_8i40_31bits 4964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 4974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber INPUT AND OUTPUT DEFINITIONS 4984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs: 5004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber index array of type Word16 -- index of 8 pulses (sign+position) 5014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Outputs: 5034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber cod array of type Word16 -- algebraic (fixed) codebook excitation 5044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow pointer to type Flag -- Flag set when overflow occurs 5054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Returns: 5074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 5084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Global Variables Used: 5104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 5114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Local Variables Needed: 5134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 5144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 5164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber FUNCTION DESCRIPTION 5174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber PURPOSE: Builds the innovative codevector from the received 5194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber index of algebraic codebook. 5204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 5224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REQUIREMENTS 5234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None 5254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 5274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REFERENCES 5284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber d8_31pf.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 5304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 5324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber PSEUDO-CODE 5334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 5364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber RESOURCES USED [optional] 5374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber When the code is written for a specific target processor the 5394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber the resources used should be documented below. 5404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber HEAP MEMORY USED: x bytes 5424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber STACK MEMORY USED: x bytes 5444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber CLOCK CYCLES: (cycle count equation for this function) + (variable 5464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber used to represent cycle count for each subroutine 5474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber called) 5484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber where: (cycle count variable) = cycle count for [subroutine 5494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber name] 5504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 5524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber CAUTION [optional] 5534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber [State any special notes, constraints or cautions for users of this function] 5544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 5564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber*/ 5574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Hubervoid dec_8i40_31bits( 5594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 index[], /* i : index of 8 pulses (sign+position) */ 5604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 cod[], /* o : algebraic (fixed) codebook excitation */ 5614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Flag *pOverflow /* o : Flag set when overflow occurs */ 5624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber) 5634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 5644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 i; 5654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 j; 5664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 pos1; 5674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 pos2; 5684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 sign; 5694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 linear_signs[NB_TRACK_MR102]; 5714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 linear_codewords[NB_PULSE]; 5724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber for (i = 0; i < L_CODE; i++) 5744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 5754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber cod[i] = 0; 5764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 5774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber decompress_code( 5794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber index, 5804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber linear_signs, 5814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber linear_codewords, 5824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow); 5834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* decode the positions and signs of pulses and build the codeword */ 5854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber for (j = 0; j < NB_TRACK_MR102; j++) /* NB_TRACK_MR102 = 4 */ 5864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 5874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* position of pulse "j" */ 5884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pos1 = (linear_codewords[j] << 2) + j; 5904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 5924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (linear_signs[j] == 0) 5934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 5944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber sign = POS_CODE; /* +1.0 */ 5954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 5964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else 5974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 5984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber sign = -NEG_CODE; /* -1.0 */ 5994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 6004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 6014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (pos1 < L_SUBFR) 6024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 6034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber cod[pos1] = sign; /* avoid buffer overflow */ 6044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 6054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 6064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* compute index i */ 6074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* position of pulse "j+4" */ 6084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 6094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pos2 = (linear_codewords[j + 4] << 2) + j; 6104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 6114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 6124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (pos2 < pos1) 6134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 6144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber sign = negate(sign); 6154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 6164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 6174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (pos2 < L_SUBFR) 6184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 6194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber cod[pos2] += sign; /* avoid buffer overflow */ 6204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 6214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 6224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 6234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } /* for (j = 0; j < NB_TRACK_MR102; j++) */ 6244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 6254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return; 6264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber} 627