dec_gain.cpp revision 4f1efc098cb5791c3e9f483f2af84aef70d2d0a0
14f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* ------------------------------------------------------------------ 24f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Copyright (C) 1998-2009 PacketVideo 34f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * 44f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 54f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * you may not use this file except in compliance with the License. 64f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * You may obtain a copy of the License at 74f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * 84f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 94f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * 104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Unless required by applicable law or agreed to in writing, software 114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * express or implied. 144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * See the License for the specific language governing permissions 154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * and limitations under the License. 164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * ------------------------------------------------------------------- 174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber */ 184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/**************************************************************************************** 194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas HuberPortions of this file are derived from the following 3GPP standard: 204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3GPP TS 26.073 224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec 234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Available from http://www.3gpp.org 244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) 264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas HuberPermission to distribute, modify and use this file under the standard license 274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huberterms listed above has been obtained from the copyright holder. 284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber****************************************************************************************/ 294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* 304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Pathname: ./audio/gsm-amr/c/src/dec_gain.c 354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Funtions: dec_gain 364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Date: 01/31/2002 384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REVISION HISTORY 414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Updating include file lists, and other things as per review 434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber comments. 444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Added fixes to the code as per review comments. Removed nested 464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber function calls and declared temp2 as a variable. 474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: A Word32 was being stored improperly in a Word16. 494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Removed qua_gain.tab and qgain475.tab from Include section and 514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber added qua_gain_tbl.h and qgain475_tab.h to Include section. 524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Changed round function name to pv_round to avoid conflict with 544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber round function in C standard library. 554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Added casting to eliminate warnings 574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Replaced "int" and/or "char" with OSCL defined types. 594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: 614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber*/ 644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; INCLUDES 684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "dec_gain.h" 714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "typedef.h" 724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "mode.h" 734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "cnst.h" 744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "pow2.h" 754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "log2.h" 764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "gc_pred.h" 774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "basic_op.h" 784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "qua_gain_tbl.h" 794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "qgain475_tab.h" 804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; MACROS 834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Define module specific macros here 844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; DEFINES 894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Include all pre-processor statements here. Include conditional 904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; compile variables also. 914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; LOCAL FUNCTION DEFINITIONS 954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Function Prototype declaration 964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; LOCAL VARIABLE DEFINITIONS 1004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Variable declaration - defined here and used outside this module 1014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* 1044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber FUNCTION NAME: dec_gain 1064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber INPUT AND OUTPUT DEFINITIONS 1084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs: 1104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pred_state = pointer to MA predictor state of type gc_predState 1114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber index = AMR mode of type enum Mode 1124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber code[] = pointer to innovative vector of type Word16 1134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber evenSubfr = Flag for even subframes of type Word16 1144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow = pointer to overflow flag 1154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Outputs: 1184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pred_state = pointer to MA predictor state of type gc_predState 1194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber gain_pit = pointer to pitch gain of type Word16 1204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber gain_cod = pointer to code gain of type Word16 1214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Returns: 1234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None. 1244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Global Variables Used: 1264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None. 1274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Local Variables Needed: 1294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None. 1304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber FUNCTION DESCRIPTION 1334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber File : dec_gain.c 1354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Purpose : Decode the pitch and codebook gains 1364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REQUIREMENTS 1394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber None. 1414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REFERENCES 1444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber agc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 1464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber PSEUDO-CODE 1494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber RESOURCES USED [optional] 1594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber When the code is written for a specific target processor the 1614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber the resources used should be documented below. 1624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber HEAP MEMORY USED: x bytes 1644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber STACK MEMORY USED: x bytes 1664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber CLOCK CYCLES: (cycle count equation for this function) + (variable 1684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber used to represent cycle count for each subroutine 1694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber called) 1704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber where: (cycle count variable) = cycle count for [subroutine 1714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber name] 1724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber CAUTION [optional] 1754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber [State any special notes, constraints or cautions for users of this function] 1764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 1784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber*/ 1794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Hubervoid Dec_gain( 1824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber gc_predState *pred_state, /* i/o: MA predictor state */ 1834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber enum Mode mode, /* i : AMR mode */ 1844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 index, /* i : index of quantization. */ 1854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 code[], /* i : Innovative vector. */ 1864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 evenSubfr, /* i : Flag for even subframes */ 1874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 * gain_pit, /* o : Pitch gain. */ 1884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 * gain_cod, /* o : Code gain. */ 1894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Flag * pOverflow 1904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber) 1914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 1924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber const Word16 *p; 1934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 frac; 1944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 gcode0; 1954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 exp; 1964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 qua_ener; 1974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 qua_ener_MR122; 1984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 g_code; 1994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word32 L_tmp; 2004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 temp1; 2014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 temp2; 2024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* Read the quantized gains (table depends on mode) */ 2044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber index = shl(index, 2, pOverflow); 2054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (mode == MR102 || mode == MR74 || mode == MR67) 2074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber p = &table_gain_highrates[index]; 2094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *gain_pit = *p++; 2114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber g_code = *p++; 2124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber qua_ener_MR122 = *p++; 2134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber qua_ener = *p; 2144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else 2164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (mode == MR475) 2184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber index += (1 ^ evenSubfr) << 1; /* evenSubfr is 0 or 1 */ 2204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (index > (MR475_VQ_SIZE*4 - 2)) 2224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber index = (MR475_VQ_SIZE * 4 - 2); /* avoid possible buffer overflow */ 2244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber p = &table_gain_MR475[index]; 2274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *gain_pit = *p++; 2294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber g_code = *p++; 2304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------* 2324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * calculate predictor update values (not stored in 4.75 * 2334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * quantizer table to save space): * 2344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * 2354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * * 2364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * qua_ener = log2(g) * 2374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * qua_ener_MR122 = 20*log10(g) * 2384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *---------------------------------------------------------*/ 2394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* Log2(x Q12) = log2(x) + 12 */ 2414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber temp1 = (Word16) L_deposit_l(g_code); 2424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Log2(temp1, &exp, &frac, pOverflow); 2434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber exp = sub(exp, 12, pOverflow); 2444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber temp1 = shr_r(frac, 5, pOverflow); 2464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber temp2 = shl(exp, 10, pOverflow); 2474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber qua_ener_MR122 = add(temp1, temp2, pOverflow); 2484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* 24660 Q12 ~= 6.0206 = 20*log10(2) */ 2504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_tmp = Mpy_32_16(exp, frac, 24660, pOverflow); 2514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_tmp = L_shl(L_tmp, 13, pOverflow); 2524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber qua_ener = pv_round(L_tmp, pOverflow); 2534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* Q12 * Q0 = Q13 -> Q10 */ 2544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else 2564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber p = &table_gain_lowrates[index]; 2584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *gain_pit = *p++; 2604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber g_code = *p++; 2614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber qua_ener_MR122 = *p++; 2624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber qua_ener = *p; 2634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*-------------------------------------------------------------------* 2674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * predict codebook gain * 2684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * ~~~~~~~~~~~~~~~~~~~~~ * 2694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * gc0 = Pow2(int(d)+frac(d)) * 2704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * = 2^exp + 2^frac * 2714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * * 2724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * gcode0 (Q14) = 2^14*2^frac = gc0 * 2^(14-exp) * 2734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *-------------------------------------------------------------------*/ 2744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber gc_pred(pred_state, mode, code, &exp, &frac, NULL, NULL, pOverflow); 2764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber gcode0 = (Word16) Pow2(14, frac, pOverflow); 2784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*------------------------------------------------------------------* 2804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * read quantized gains, update table of past quantized energies * 2814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * 2824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * st->past_qua_en(Q10) = 20 * Log10(g_fac) / constant * 2834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * = Log2(g_fac) * 2844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * = qua_ener * 2854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * constant = 20*Log10(2) * 2864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *------------------------------------------------------------------*/ 2874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_tmp = L_mult(g_code, gcode0, pOverflow); 2894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber temp1 = sub(10, exp, pOverflow); 2904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_tmp = L_shr(L_tmp, temp1, pOverflow); 2914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *gain_cod = extract_h(L_tmp); 2924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* update table of past quantized energies */ 2944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber gc_pred_update(pred_state, qua_ener_MR122, qua_ener); 2964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return; 2984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber} 2994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 306