14f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* ------------------------------------------------------------------ 24f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Copyright (C) 1998-2009 PacketVideo 34f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * 44f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 54f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * you may not use this file except in compliance with the License. 64f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * You may obtain a copy of the License at 74f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * 84f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 94f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * 104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Unless required by applicable law or agreed to in writing, software 114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * express or implied. 144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * See the License for the specific language governing permissions 154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * and limitations under the License. 164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * ------------------------------------------------------------------- 174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber */ 184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/**************************************************************************************** 194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas HuberPortions of this file are derived from the following 3GPP standard: 204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3GPP TS 26.073 224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec 234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Available from http://www.3gpp.org 244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) 264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas HuberPermission to distribute, modify and use this file under the standard license 274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huberterms listed above has been obtained from the copyright holder. 284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber****************************************************************************************/ 294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* 304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Filename: /audio/gsm_amr/c/include/mult.h 324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REVISION HISTORY 354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Created separate header file for mult function. 374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Changed prototype of the mult() function. Instead of using global 394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber a pointer to overflow flag is now passed into the function. 404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Updated copyright information. 424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Updated variable name from "overflow" to "pOverflow" to match 434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber with original function declaration. 444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Moved _cplusplus #ifdef after Include section. 464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Providing support for ARM and Linux-ARM assembly instructions. 484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Who: Date: 504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: 514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber INCLUDE DESCRIPTION 544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber This file contains all the constant definitions and prototype definitions 564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber needed by the mult function. 574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber*/ 604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifndef MULT_H 624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#define MULT_H 634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; INCLUDES 664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "basicop_malloc.h" 694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*--------------------------------------------------------------------------*/ 714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifdef __cplusplus 724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huberextern "C" 734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif 754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; MACROS 784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; Define module specific macros here 794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; DEFINES 834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; Include all pre-processor statements here. 844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; EXTERNAL VARIABLES REFERENCES 884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; Declare variables used in this module but defined elsewhere 894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; SIMPLE TYPEDEF'S 934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; ENUMERATED TYPEDEF'S 974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 1004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; STRUCTURES TYPEDEF'S 1014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 1024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 1044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; GLOBAL FUNCTION DEFINITIONS 1054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; Function Prototype declaration 1064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 1074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#if defined(PV_ARM_V5) 1084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber __inline Word16 mult(Word16 var1, Word16 var2, Flag *pOverflow) 1104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word32 product; 1124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber OSCL_UNUSED_ARG(pOverflow); 1144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber __asm 1164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber SMULBB product, var1, var2 1184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MOV product, product, ASR #15 1194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber CMP product, 0x7FFF 1204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber MOVGE product, 0x7FFF 1214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return ((Word16) product); 1244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#elif defined(PV_ARM_GCC_V5) 1274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber __inline Word16 mult(Word16 var1, Word16 var2, Flag *pOverflow) 1294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber register Word32 ra = var1; 1314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber register Word32 rb = var2; 1324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word32 product; 1334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word32 temp = 0x7FFF; 1344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber OSCL_UNUSED_ARG(pOverflow); 1364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber asm volatile("smulbb %0, %1, %2" 1384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber : "=r"(product) 1394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber : "r"(ra), "r"(rb) 1404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ); 1414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber asm volatile("mov %0, %1, ASR #15" 1424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber : "=r"(product) 1434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber : "r"(product) 1444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ); 1454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber asm volatile("cmp %0, %1" 1464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber : "=r"(product) 1474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber : "r"(temp) 1484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ); 1494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber asm volatile("movge %0, %1" 1504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber : "=r"(product) 1514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber : "r"(temp) 1524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ); 1534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return ((Word16) product); 1554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#else /* C EQUIVALENT */ 1584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber static inline Word16 mult(Word16 var1, Word16 var2, Flag *pOverflow) 1604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber register Word32 product; 1624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber product = ((Word32) var1 * var2) >> 15; 1644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* Saturate result (if necessary). */ 1664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* var1 * var2 >0x00007fff is the only case */ 1674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* that saturation occurs. */ 1684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (product > 0x00007fffL) 1704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *pOverflow = 1; 1724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber product = (Word32) MAX_16; 1734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* Return the product as a 16 bit value by type casting Word32 to Word16 */ 1774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return ((Word16) product); 1794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif 1824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 1834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; END 1844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 1854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifdef __cplusplus 1864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber} 1874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif 1884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif /* _MULT_H_ */ 1904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 191