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 Filename: phase_dispersion.cpp 354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Date: 05/08/2007 374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REVISION HISTORY 404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: 434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber INPUT AND OUTPUT DEFINITIONS 464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int16 gain_code, (i) Q0 : gain of code 484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int16 gain_pit, (i) Q14 : gain of pitch 494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int16 code[], (i/o) : code vector 504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int16 mode, (i) : level, 0=hi, 1=lo, 2=off 514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int16 disp_mem[], (i/o) : static memory (size = 8) 524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int16 ScratchMem[] 534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber FUNCTION DESCRIPTION 564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber post-processing to enhance noise in low bit rate. 584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REQUIREMENTS 614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REFERENCES 654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber PSEUDO-CODE 684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber*/ 714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; INCLUDES 754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "pv_amr_wb_type_defs.h" 784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "pvamrwbdecoder_basic_op.h" 794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "pvamrwbdecoder_cnst.h" 804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "pvamrwbdecoder_mem_funcs.h" 814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "pvamrwbdecoder_acelp.h" 824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "pvamrwb_math_op.h" 834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; MACROS 874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Define module specific macros here 884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; DEFINES 934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Include all pre-processor statements here. Include conditional 944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; compile variables also. 954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#define pitch_0_9 14746 /* 0.9 in Q14 */ 974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#define pitch_0_6 9830 /* 0.6 in Q14 */ 984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#define L_SUBFR 64 994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 1014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; LOCAL FUNCTION DEFINITIONS 1024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Function Prototype declaration 1034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 1064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; LOCAL STORE/BUFFER/POINTER DEFINITIONS 1074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Variable declaration - defined here and used outside this module 1084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* impulse response with phase dispersion */ 1104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* 2.0 - 6.4 kHz phase dispersion */ 11246f715e1150b02b00b16620f92a84c74aba43b47Martin Storsjostatic const int16 ph_imp_low[L_SUBFR] = 1134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 1144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 20182, 9693, 3270, -3437, 2864, -5240, 1589, -1357, 1154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 600, 3893, -1497, -698, 1203, -5249, 1199, 5371, 1164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber -1488, -705, -2887, 1976, 898, 721, -3876, 4227, 1174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber -5112, 6400, -1032, -4725, 4093, -4352, 3205, 2130, 1184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber -1996, -1835, 2648, -1786, -406, 573, 2484, -3608, 1194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3139, -1363, -2566, 3808, -639, -2051, -541, 2376, 1204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3932, -6262, 1432, -3601, 4889, 370, 567, -1163, 1214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber -2854, 1914, 39, -2418, 3454, 2975, -4021, 3431 1224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber}; 1234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* 3.2 - 6.4 kHz phase dispersion */ 12546f715e1150b02b00b16620f92a84c74aba43b47Martin Storsjostatic const int16 ph_imp_mid[L_SUBFR] = 1264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 1274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 24098, 10460, -5263, -763, 2048, -927, 1753, -3323, 1284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2212, 652, -2146, 2487, -3539, 4109, -2107, -374, 1294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber -626, 4270, -5485, 2235, 1858, -2769, 744, 1140, 1304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber -763, -1615, 4060, -4574, 2982, -1163, 731, -1098, 1314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 803, 167, -714, 606, -560, 639, 43, -1766, 1324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3228, -2782, 665, 763, 233, -2002, 1291, 1871, 1334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber -3470, 1032, 2710, -4040, 3624, -4214, 5292, -4270, 1344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1563, 108, -580, 1642, -2458, 957, 544, 2540 1354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber}; 1364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 1384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; EXTERNAL FUNCTION REFERENCES 1394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Declare functions defined elsewhere and referenced in this module 1404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 1434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES 1444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; Declare variables used in this module but defined elsewhere 1454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 1484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; FUNCTION CODE 1494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 1504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Hubervoid phase_dispersion( 1524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int16 gain_code, /* (i) Q0 : gain of code */ 1534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int16 gain_pit, /* (i) Q14 : gain of pitch */ 1544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int16 code[], /* (i/o) : code vector */ 1554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int16 mode, /* (i) : level, 0=hi, 1=lo, 2=off */ 1564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int16 disp_mem[], /* (i/o) : static memory (size = 8) */ 1574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int16 ScratchMem[] 1584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber) 1594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 1604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int16 i, j, state; 1614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int16 *prev_gain_pit, *prev_gain_code, *prev_state; 1624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber int16 *code2 = ScratchMem; 1634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber prev_state = disp_mem; 1654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber prev_gain_code = disp_mem + 1; 1664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber prev_gain_pit = disp_mem + 2; 1674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pv_memset((void *)code2, 0, (2*L_SUBFR)*sizeof(*code2)); 1694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (gain_pit < pitch_0_6) 1724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber state = 0; 1744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else if (gain_pit < pitch_0_9) 1764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber state = 1; 1784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else 1804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber state = 2; 1824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber for (i = 5; i > 0; i--) 1854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber prev_gain_pit[i] = prev_gain_pit[i - 1]; 1874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber prev_gain_pit[0] = gain_pit; 1894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (sub_int16(gain_code, *prev_gain_code) > shl_int16(*prev_gain_code, 1)) 1914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* onset */ 1934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (state < 2) 1944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber state++; 1964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else 1994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber j = 0; 2014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber for (i = 0; i < 6; i++) 2024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (prev_gain_pit[i] < pitch_0_6) 2044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber j++; 2064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (j > 2) 2104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber state = 0; 2124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (state > *prev_state + 1) 2144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber state--; 2164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *prev_gain_code = gain_code; 2204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber *prev_state = state; 2214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* circular convolution */ 2234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber state += mode; /* level of dispersion */ 2254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (state == 0) 2274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber for (i = 0; i < L_SUBFR; i++) 2294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (code[i] != 0) 2314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber for (j = 0; j < L_SUBFR; j++) 2334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber code2[i + j] = add_int16(code2[i + j], mult_int16_r(code[i], ph_imp_low[j])); 2354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else if (state == 1) 2404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber for (i = 0; i < L_SUBFR; i++) 2424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (code[i] != 0) 2444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber for (j = 0; j < L_SUBFR; j++) 2464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber code2[i + j] = add_int16(code2[i + j], mult_int16_r(code[i], ph_imp_mid[j])); 2484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (state < 2) 2534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber for (i = 0; i < L_SUBFR; i++) 2554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber code[i] = add_int16(code2[i], code2[i + L_SUBFR]); 2574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return; 2604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber} 2614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 262