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 26.173 224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ANSI-C code for the Adaptive Multi-Rate - Wideband (AMR-WB) speech codec 234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Available from http://www.3gpp.org 244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber(C) 2007, 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: ./src/pvamrwbdecoder_basic_op_cequivalent.h 354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Date: 05/07/2007 374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REVISION HISTORY 404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: 424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber INCLUDE DESCRIPTION 444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber*/ 474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifndef PVAMRWBDECODER_BASIC_OP_CEQUIVALENT_H 484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#define PVAMRWBDECODER_BASIC_OP_CEQUIVALENT_H 494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifdef __cplusplus 514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huberextern "C" 524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif 544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "normalize_amr_wb.h" 574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#if defined(C_EQUIVALENT) 594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Function Name : add_int16 644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Purpose : 664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Performs the addition (var1+var2) with overflow control and saturation; 684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber the 16 bit result is set at +32767 when overflow occurs or at -32768 694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber when underflow occurs. 704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs : 724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var1 734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (int16) whose value falls in the 744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0xffff 8000 <= var1 <= 0x0000 7fff. 754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var2 774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (int16) whose value falls in the 784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0xffff 8000 <= var1 <= 0x0000 7fff. 794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Outputs : 814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber none 824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Return Value : 844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (int16) whose value falls in the 854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0xffff 8000 <= var_out <= 0x0000 7fff. 864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber __inline int16 add_int16(int16 var1, int16 var2) 894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int32 L_sum; 914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_sum = (int32) var1 + var2; 934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if ((L_sum >> 15) != (L_sum >> 31)) 944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_sum = (L_sum >> 31) ^ MAX_16; 964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return ((int16)(L_sum)); 984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 1024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Function Name : sub_int16 1044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Performs the subtraction (var1+var2) with overflow control and satu- 1064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ration; the 16 bit result is set at +32767 when overflow occurs or at 1074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber -32768 when underflow occurs. 1084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs : 1104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var1 1124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (int16) whose value falls in the 1134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0xffff 8000 <= var1 <= 0x0000 7fff. 1144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var2 1164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (int16) whose value falls in the 1174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0xffff 8000 <= var1 <= 0x0000 7fff. 1184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Outputs : 1204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber none 1214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Return Value : 1234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (int16) whose value falls in the 1244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0xffff 8000 <= var_out <= 0x0000 7fff. 1254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 1274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber __inline int16 sub_int16(int16 var1, int16 var2) 1284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int32 L_diff; 1304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_diff = (int32) var1 - var2; 1324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if ((L_diff >> 15) != (L_diff >> 31)) 1334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_diff = (L_diff >> 31) ^ MAX_16; 1354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return ((int16)(L_diff)); 1374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 1414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Function Name : mult_int16 1434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Performs the multiplication of var1 by var2 and gives a 16 bit result 1454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber which is scaled i.e.: 1464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber mult_int16(var1,var2) = extract_l(L_shr((var1 times var2),15)) and 1474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber mult_int16(-32768,-32768) = 32767. 1484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs : 1504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var1 1514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (int16) whose value falls in the 1524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0xffff 8000 <= var1 <= 0x0000 7fff. 1534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var2 1554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (int16) whose value falls in the 1564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0xffff 8000 <= var1 <= 0x0000 7fff. 1574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Return Value : 1604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (int16) whose value falls in the 1614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0xffff 8000 <= var_out <= 0x0000 7fff. 1624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 1644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber __inline int16 mult_int16(int16 var1, int16 var2) 1664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int32 L_product; 1684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_product = ((int32) var1 * (int32) var2) >> 15; 1704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if ((L_product >> 15) != (L_product >> 31)) 1724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_product = (L_product >> 31) ^ MAX_16; 1744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return ((int16)L_product); 1774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 1814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Function Name : add_int32 1834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 32 bits addition of the two 32 bits variables (L_var1+L_var2) with 1854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber overflow control and saturation; the result is set at +2147483647 when 1864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber overflow occurs or at -2147483648 when underflow occurs. 1874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs : 1894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var1 32 bit long signed integer (int32) whose value falls in the 1914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. 1924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var2 32 bit long signed integer (int32) whose value falls in the 1944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. 1954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Return Value : 1984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var_out 1994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 32 bit long signed integer (int32) whose value falls in the 2004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. 2014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 2034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber __inline int32 add_int32(int32 L_var1, int32 L_var2) 2064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int32 L_var_out; 2084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 20951fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen //L_var_out = L_var1 + L_var2; 21051fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen if (L_var2 < 0) { 21151fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen if (L_var1 < MIN_32 - L_var2) { 21251fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen return MIN_32; 21351fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen } 21451fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen } else { 21551fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen if (L_var1 > MAX_32 - L_var2) { 21651fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen return MAX_32; 2174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 21951fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen 22051fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen return L_var1 + L_var2; 2214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 2274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Function Name : sub_int32 2294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 32 bits subtraction of the two 32 bits variables (L_var1-L_var2) with 2314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber overflow control and saturation; the result is set at +2147483647 when 2324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber overflow occurs or at -2147483648 when underflow occurs. 2334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs : 2354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var1 32 bit long signed integer (int32) whose value falls in the 2374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. 2384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var2 32 bit long signed integer (int32) whose value falls in the 2404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. 2414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Return Value : 2444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var_out 2454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 32 bit long signed integer (int32) whose value falls in the 2464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. 2474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 2494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber __inline int32 sub_int32(int32 L_var1, int32 L_var2) 2524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 25351fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen //L_var_out = L_var1 - L_var2; 25451fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen if (L_var2 < 0) { 25551fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen if (L_var1 > MAX_32 + L_var2) { 25651fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen return MAX_32; 25751fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen } 25851fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen } else { 25951fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen if (L_var1 < MIN_32 + L_var2) { 26051fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen return MIN_32; 2614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 26351fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen 26451fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen return L_var1 - L_var2; 2654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 2704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 27151fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen Function Name : mul_16by16_to_int32 2724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 27351fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen mul_16by16_to_int32 is the 32 bit result of the multiplication of var1 27451fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen times var2 with one shift left i.e.: 27551fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen L_mult(var1,var2) = L_shl((var1 times var2),1) and 27651fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen L_mult(-32768,-32768) = 2147483647. 2774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs : 2794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var1 2804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (int16) whose value falls in the 2814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0xffff 8000 <= var1 <= 0x0000 7fff. 2824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var2 2844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (int16) whose value falls in the 2854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0xffff 8000 <= var1 <= 0x0000 7fff. 2864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Return Value : 2884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 32 bit long signed integer (int32) whose value falls in the 2894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. 2904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 2924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 29451fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen __inline int32 mul_16by16_to_int32(int16 var1, int16 var2) 2954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int32 L_mul; 2974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_mul = ((int32) var1 * (int32) var2); 2994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (L_mul != 0x40000000) 3014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_mul <<= 1; 3034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else 3054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_mul = MAX_32; /* saturation */ 3074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 30951fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen return (L_mul); 3104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 3144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 31551fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen Function Name : mac_16by16_to_int32 3164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 31751fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen Multiply var1 by var2 and shift the result left by 1. Add the 32 bit 3184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber result to L_var3 with saturation, return a 32 bit result: 31951fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen L_mac(L_var3,var1,var2) = L_add(L_var3,L_mult(var1,var2)). 3204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs : 3224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var3 32 bit long signed integer (int32) whose value falls in the 3244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. 3254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var1 3274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (int16) whose value falls in the 3284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0xffff 8000 <= var1 <= 0x0000 7fff. 3294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var2 3314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (int16) whose value falls in the 3324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0xffff 8000 <= var1 <= 0x0000 7fff. 3334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Return Value : 3364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 32 bit long signed integer (int32) whose value falls in the 3374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. 3384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 3404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 34251fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen __inline int32 mac_16by16_to_int32(int32 L_var3, int16 var1, int16 var2) 34351fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen { 34451fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen return add_int32(L_var3, mul_16by16_to_int32(var1, var2)); 3454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 3494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 35051fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen Function Name : msu_16by16_from_int32 3514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 35251fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen Multiply var1 by var2 and shift the result left by 1. Subtract the 32 bit 35351fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen result to L_var3 with saturation, return a 32 bit result: 35451fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen L_msu(L_var3,var1,var2) = L_sub(L_var3,L_mult(var1,var2)). 3554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs : 35751fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen 35851fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen L_var3 32 bit long signed integer (int32) whose value falls in the 35951fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. 36051fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen 3614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var1 3624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (int16) whose value falls in the 3634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0xffff 8000 <= var1 <= 0x0000 7fff. 3644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var2 3664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (int16) whose value falls in the 3674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0xffff 8000 <= var1 <= 0x0000 7fff. 3684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 36951fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen 3704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Return Value : 3714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 32 bit long signed integer (int32) whose value falls in the 3724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. 3734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 3754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 37651fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen __inline int32 msu_16by16_from_int32(int32 L_var3, int16 var1, int16 var2) 3774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 37851fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen return sub_int32(L_var3, mul_16by16_to_int32(var1, var2)); 3794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 38151fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen 3824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 3834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Function Name : amr_wb_round 3854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Round the lower 16 bits of the 32 bit input number into the MS 16 bits 3874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber with saturation. Shift the resulting bits right by 16 and return the 16 3884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber bit number: 3894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber round(L_var1) = extract_h(L_add(L_var1,32768)) 3904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs : 3924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var1 3934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 32 bit long signed integer (int32 ) whose value falls in the 3944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 0000 <= L_var1 <= 0x7fff ffff. 3954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Return Value : 3974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (int16) whose value falls in the 3984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0xffff 8000 <= var_out <= 0x0000 7fff. 3994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 4014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber __inline int16 amr_wb_round(int32 L_var1) 4024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 40351fb5e9931b5585cd4ff60328a93fdf30752eea4Marco Nelissen if (L_var1 <= (MAX_32 - 0x00008000L)) 4044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 4054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var1 += 0x00008000L; 4064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 4074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return ((int16)(L_var1 >> 16)); 4084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 4094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 4124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Function Name : amr_wb_shl1_round 4144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Shift the 32 bit input number to the left by 1, round up the result and 4164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber shift down by 16 4174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber amr_wb_shl1_round(L_var1) = round(L_shl(L_var1,1)) 4184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs : 4204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var1 4214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 32 bit long signed integer (int32 ) whose value falls in the 4224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 0000 <= L_var1 <= 0x7fff ffff. 4234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Return Value : 4254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (int16) whose value falls in the 4264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0xffff 8000 <= var_out <= 0x0000 7fff. 4274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 4294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber __inline int16 amr_wb_shl1_round(int32 L_var1) 4304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 4314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int16 var_out; 4324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if ((L_var1 << 1) >> 1 == L_var1) 4344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 4354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var_out = (int16)((L_var1 + 0x00004000) >> 15); 4364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 4374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else 4384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 4394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var_out = (int16)(((L_var1 >> 31) ^ MAX_32) >> 16); 4404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 4414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return (var_out); 4434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 4444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 4464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Function Name : mul_32by16 4474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Multiply a 16 bit integer by a 32 bit (DPF). The result is divided 4494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber by 2^15 4504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_32 = (hi1*lo2)<<1 + ((lo1*lo2)>>15)<<1 4524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs : 4544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber hi hi part of 32 bit number. 4564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber lo lo part of 32 bit number. 4574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber n 16 bit number. 4584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 4604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber __inline int32 mul_32by16(int16 hi, int16 lo, int16 n) 4634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 4644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return (((((int32)hi*n)) + ((((int32)lo*n) >> 15))) << 1); 4654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 4664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber __inline int32 fxp_mac_16by16(int16 var1, int16 var2, int32 L_add) 4684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 4694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_add += (int32)var1 * var2; 4714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return L_add; 4734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 4744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber __inline int32 fxp_mul_16by16(int16 var1, const int16 var2) 4764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 4774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int32 L_mul = (int32)var1 * var2; 4784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return L_mul; 4804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 4814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber __inline int32 fxp_mul32_by_16b(int32 L_var1, const int32 L_var2) 4834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 4844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int32 L_mul = (int32)(((int64)L_var1 * (L_var2 << 16)) >> 32); 4864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return L_mul; 4884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 4894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifdef __cplusplus 4924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber} 4934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif 4944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif 4964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif /* PVAMRWBDECODER_BASIC_OP_CEQUIVALENT_H */ 4984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 499