ref: 00626046473379e2be1594539504f8c43761ba61
dir: /libfaad/ps_dec.c/
/*
** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR and PS decoding
** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
**
** Any non-GPL usage of this software or parts of this software is strictly
** forbidden.
**
** Commercial non-GPL licensing of this software is possible.
** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
**
** $Id: ps_dec.c,v 1.1 2004/03/10 19:53:40 menno Exp $
**/
#include "common.h"
#ifdef PS_DEC
#include <stdlib.h>
#include "ps_dec.h"
/* constants */
#define NEGATE_IPD_MASK (0x1000)
#define DECAY_SLOPE FRAC_CONST(0.05)
#define CSQRT2 COEF_CONST(sqrt(2.0))
#define FRSQRT2 FRAC_CONST(1.0/sqrt(2.0))
/* tables */
/* filters are mirrored in coef 6, second half left out */
static const real_t p8_13_20[7] =
{
FRAC_CONST(0.00746082949812),
FRAC_CONST(0.02270420949825),
FRAC_CONST(0.04546865930473),
FRAC_CONST(0.07266113929591),
FRAC_CONST(0.09885108575264),
FRAC_CONST(0.11793710567217),
FRAC_CONST(0.125)
};
static const real_t p2_13_20[7] =
{
FRAC_CONST(0.0),
FRAC_CONST(0.01899487526049),
FRAC_CONST(0.0),
FRAC_CONST(-0.07293139167538),
FRAC_CONST(0.0),
FRAC_CONST(0.30596630545168),
FRAC_CONST(0.5)
};
static const real_t p12_13_34[7] =
{
FRAC_CONST(0.04081179924692),
FRAC_CONST(0.03812810994926),
FRAC_CONST(0.05144908135699),
FRAC_CONST(0.06399831151592),
FRAC_CONST(0.07428313801106),
FRAC_CONST(0.08100347892914),
FRAC_CONST(0.08333333333333)
};
static const real_t p8_13_34[7] =
{
FRAC_CONST(0.01565675600122),
FRAC_CONST(0.03752716391991),
FRAC_CONST(0.05417891378782),
FRAC_CONST(0.08417044116767),
FRAC_CONST(0.10307344158036),
FRAC_CONST(0.12222452249753),
FRAC_CONST(0.125)
};
static const real_t p4_13_34[7] =
{
FRAC_CONST(-0.05908211155639),
FRAC_CONST(-0.04871498374946),
FRAC_CONST(0.0),
FRAC_CONST(0.07778723915851),
FRAC_CONST(0.16486303567403),
FRAC_CONST(0.23279856662996),
FRAC_CONST(0.25)
};
static const uint8_t delay_length_d[2][NO_ALLPASS_LINKS] = {
{ 1, 2, 3 } /* d_24kHz */,
{ 3, 4, 5 } /* d_48kHz */
};
static const real_t filter_a[NO_ALLPASS_LINKS] = { /* a(m) = exp(-d_48kHz(m)/7) */
FRAC_CONST(0.65143905753106),
FRAC_CONST(0.56471812200776),
FRAC_CONST(0.48954165955695)
};
#if 0
#if 0
float f_center_20[12] = {
0.5/4, 1.5/4, 2.5/4, 3.5/4,
4.5/4*0, 5.5/4*0, -1.5/4, -0.5/4,
3.5/2, 2.5/2, 4.5/2, 5.5/2
};
#else
float f_center_20[12] = {
0.5/8, 1.5/8, 2.5/8, 3.5/8,
4.5/8*0, 5.5/8*0, -1.5/8, -0.5/8,
3.5/4, 2.5/4, 4.5/4, 5.5/4
};
#endif
float f_center_34[32] = {
1/12, 3/12, 5/12, 7/12,
9/12, 11/12, 13/12, 15/12,
17/12, -5/12, -3/12, -1/12,
17/8, 19/8, 5/8, 7/8,
9/8, 11/8, 13/8, 15/8,
9/4, 11/4, 13/4, 7/4,
17/4, 11/4, 13/4, 15/4,
17/4, 19/4, 21/4, 15/4
};
static const real_t frac_delay_q[] = {
FRAC_CONST(0.43),
FRAC_CONST(0.75),
FRAC_CONST(0.347)
};
#endif
/* RE(ps->Phi_Fract_Qmf[j]) = (float)cos(M_PI*(j+0.5)*(0.39)); */
/* IM(ps->Phi_Fract_Qmf[j]) = (float)sin(M_PI*(j+0.5)*(0.39)); */
static const complex_t Phi_Fract_Qmf[] = {
{ FRAC_CONST(0.8181497455), FRAC_CONST(0.5750052333) },
{ FRAC_CONST(-0.2638730407), FRAC_CONST(0.9645574093) },
{ FRAC_CONST(-0.9969173074), FRAC_CONST(0.0784590989) },
{ FRAC_CONST(-0.4115143716), FRAC_CONST(-0.9114032984) },
{ FRAC_CONST(0.7181262970), FRAC_CONST(-0.6959127784) },
{ FRAC_CONST(0.8980275989), FRAC_CONST(0.4399391711) },
{ FRAC_CONST(-0.1097343117), FRAC_CONST(0.9939609766) },
{ FRAC_CONST(-0.9723699093), FRAC_CONST(0.2334453613) },
{ FRAC_CONST(-0.5490227938), FRAC_CONST(-0.8358073831) },
{ FRAC_CONST(0.6004202366), FRAC_CONST(-0.7996846437) },
{ FRAC_CONST(0.9557930231), FRAC_CONST(0.2940403223) },
{ FRAC_CONST(0.0471064523), FRAC_CONST(0.9988898635) },
{ FRAC_CONST(-0.9238795042), FRAC_CONST(0.3826834261) },
{ FRAC_CONST(-0.6730124950), FRAC_CONST(-0.7396311164) },
{ FRAC_CONST(0.4679298103), FRAC_CONST(-0.8837656379) },
{ FRAC_CONST(0.9900236726), FRAC_CONST(0.1409012377) },
{ FRAC_CONST(0.2027872950), FRAC_CONST(0.9792228341) },
{ FRAC_CONST(-0.8526401520), FRAC_CONST(0.5224985480) },
{ FRAC_CONST(-0.7804304361), FRAC_CONST(-0.6252426505) },
{ FRAC_CONST(0.3239174187), FRAC_CONST(-0.9460853338) },
{ FRAC_CONST(0.9998766184), FRAC_CONST(-0.0157073177) },
{ FRAC_CONST(0.3534748554), FRAC_CONST(0.9354440570) },
{ FRAC_CONST(-0.7604059577), FRAC_CONST(0.6494480371) },
{ FRAC_CONST(-0.8686315417), FRAC_CONST(-0.4954586625) },
{ FRAC_CONST(0.1719291061), FRAC_CONST(-0.9851093292) },
{ FRAC_CONST(0.9851093292), FRAC_CONST(-0.1719291061) },
{ FRAC_CONST(0.4954586625), FRAC_CONST(0.8686315417) },
{ FRAC_CONST(-0.6494480371), FRAC_CONST(0.7604059577) },
{ FRAC_CONST(-0.9354440570), FRAC_CONST(-0.3534748554) },
{ FRAC_CONST(0.0157073177), FRAC_CONST(-0.9998766184) },
{ FRAC_CONST(0.9460853338), FRAC_CONST(-0.3239174187) },
{ FRAC_CONST(0.6252426505), FRAC_CONST(0.7804304361) },
{ FRAC_CONST(-0.5224985480), FRAC_CONST(0.8526401520) },
{ FRAC_CONST(-0.9792228341), FRAC_CONST(-0.2027872950) },
{ FRAC_CONST(-0.1409012377), FRAC_CONST(-0.9900236726) },
{ FRAC_CONST(0.8837656379), FRAC_CONST(-0.4679298103) },
{ FRAC_CONST(0.7396311164), FRAC_CONST(0.6730124950) },
{ FRAC_CONST(-0.3826834261), FRAC_CONST(0.9238795042) },
{ FRAC_CONST(-0.9988898635), FRAC_CONST(-0.0471064523) },
{ FRAC_CONST(-0.2940403223), FRAC_CONST(-0.9557930231) },
{ FRAC_CONST(0.7996846437), FRAC_CONST(-0.6004202366) },
{ FRAC_CONST(0.8358073831), FRAC_CONST(0.5490227938) },
{ FRAC_CONST(-0.2334453613), FRAC_CONST(0.9723699093) },
{ FRAC_CONST(-0.9939609766), FRAC_CONST(0.1097343117) },
{ FRAC_CONST(-0.4399391711), FRAC_CONST(-0.8980275989) },
{ FRAC_CONST(0.6959127784), FRAC_CONST(-0.7181262970) },
{ FRAC_CONST(0.9114032984), FRAC_CONST(0.4115143716) },
{ FRAC_CONST(-0.0784590989), FRAC_CONST(0.9969173074) },
{ FRAC_CONST(-0.9645574093), FRAC_CONST(0.2638730407) },
{ FRAC_CONST(-0.5750052333), FRAC_CONST(-0.8181497455) },
{ FRAC_CONST(0.5750052333), FRAC_CONST(-0.8181497455) },
{ FRAC_CONST(0.9645574093), FRAC_CONST(0.2638730407) },
{ FRAC_CONST(0.0784590989), FRAC_CONST(0.9969173074) },
{ FRAC_CONST(-0.9114032984), FRAC_CONST(0.4115143716) },
{ FRAC_CONST(-0.6959127784), FRAC_CONST(-0.7181262970) },
{ FRAC_CONST(0.4399391711), FRAC_CONST(-0.8980275989) },
{ FRAC_CONST(0.9939609766), FRAC_CONST(0.1097343117) },
{ FRAC_CONST(0.2334453613), FRAC_CONST(0.9723699093) },
{ FRAC_CONST(-0.8358073831), FRAC_CONST(0.5490227938) },
{ FRAC_CONST(-0.7996846437), FRAC_CONST(-0.6004202366) },
{ FRAC_CONST(0.2940403223), FRAC_CONST(-0.9557930231) },
{ FRAC_CONST(0.9988898635), FRAC_CONST(-0.0471064523) },
{ FRAC_CONST(0.3826834261), FRAC_CONST(0.9238795042) },
{ FRAC_CONST(-0.7396311164), FRAC_CONST(0.6730124950) }
};
/* RE(Phi_Fract_SubQmf20[j]) = (float)cos(M_PI*f_center_20[j]*0.39); */
/* IM(Phi_Fract_SubQmf20[j]) = (float)sin(M_PI*f_center_20[j]*0.39); */
static const complex_t Phi_Fract_SubQmf20[] = {
{ FRAC_CONST(0.9882950187), FRAC_CONST(0.1525546312) },
{ FRAC_CONST(0.8962930441), FRAC_CONST(0.4434623122) },
{ FRAC_CONST(0.7208535671), FRAC_CONST(0.6930873394) },
{ FRAC_CONST(0.4783087075), FRAC_CONST(0.8781917691) },
{ FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) },
{ FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) },
{ FRAC_CONST(0.8962930441), FRAC_CONST(-0.4434623122) },
{ FRAC_CONST(0.9882950187), FRAC_CONST(-0.1525546312) },
{ FRAC_CONST(-0.5424415469), FRAC_CONST(0.8400935531) },
{ FRAC_CONST(0.0392598175), FRAC_CONST(0.9992290139) },
{ FRAC_CONST(-0.9268565774), FRAC_CONST(0.3754155636) },
{ FRAC_CONST(-0.9741733670), FRAC_CONST(-0.2258012742) }
};
/* RE(Phi_Fract_SubQmf34[j]) = (float)cos(M_PI*f_center_34[j]*0.39); */
/* IM(Phi_Fract_SubQmf34[j]) = (float)sin(M_PI*f_center_34[j]*0.39); */
static const complex_t Phi_Fract_SubQmf34[] = {
{ FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) },
{ FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) },
{ FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) },
{ FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) },
{ FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) },
{ FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) },
{ FRAC_CONST(0.3387379348), FRAC_CONST(0.9408807755) },
{ FRAC_CONST(0.3387379348), FRAC_CONST(0.9408807755) },
{ FRAC_CONST(0.3387379348), FRAC_CONST(0.9408807755) },
{ FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) },
{ FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) },
{ FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) },
{ FRAC_CONST(-0.7705132365), FRAC_CONST(0.6374239922) },
{ FRAC_CONST(-0.7705132365), FRAC_CONST(0.6374239922) },
{ FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) },
{ FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) },
{ FRAC_CONST(0.3387379348), FRAC_CONST(0.9408807755) },
{ FRAC_CONST(0.3387379348), FRAC_CONST(0.9408807755) },
{ FRAC_CONST(0.3387379348), FRAC_CONST(0.9408807755) },
{ FRAC_CONST(0.3387379348), FRAC_CONST(0.9408807755) },
{ FRAC_CONST(-0.7705132365), FRAC_CONST(0.6374239922) },
{ FRAC_CONST(-0.7705132365), FRAC_CONST(0.6374239922) },
{ FRAC_CONST(-0.8607420325), FRAC_CONST(-0.5090414286) },
{ FRAC_CONST(0.3387379348), FRAC_CONST(0.9408807755) },
{ FRAC_CONST(0.1873813123), FRAC_CONST(-0.9822872281) },
{ FRAC_CONST(-0.7705132365), FRAC_CONST(0.6374239922) },
{ FRAC_CONST(-0.8607420325), FRAC_CONST(-0.5090414286) },
{ FRAC_CONST(-0.8607420325), FRAC_CONST(-0.5090414286) },
{ FRAC_CONST(0.1873813123), FRAC_CONST(-0.9822872281) },
{ FRAC_CONST(0.1873813123), FRAC_CONST(-0.9822872281) },
{ FRAC_CONST(0.9876883626), FRAC_CONST(-0.1564344615) },
{ FRAC_CONST(-0.8607420325), FRAC_CONST(-0.5090414286) }
};
/* RE(Q_Fract_allpass_Qmf[j][i]) = (float)cos(M_PI*(j+0.5)*(frac_delay_q[i])); */
/* IM(Q_Fract_allpass_Qmf[j][i]) = (float)sin(M_PI*(j+0.5)*(frac_delay_q[i])); */
static const complex_t Q_Fract_allpass_Qmf[][3] = {
{ { FRAC_CONST(0.7804303765), FRAC_CONST(0.6252426505) }, { FRAC_CONST(0.3826834261), FRAC_CONST(0.9238795042) }, { FRAC_CONST(0.8550928831), FRAC_CONST(0.5184748173) } },
{ { FRAC_CONST(-0.4399392009), FRAC_CONST(0.8980275393) }, { FRAC_CONST(-0.9238795042), FRAC_CONST(-0.3826834261) }, { FRAC_CONST(-0.0643581524), FRAC_CONST(0.9979268909) } },
{ { FRAC_CONST(-0.9723699093), FRAC_CONST(-0.2334454209) }, { FRAC_CONST(0.9238795042), FRAC_CONST(-0.3826834261) }, { FRAC_CONST(-0.9146071672), FRAC_CONST(0.4043435752) } },
{ { FRAC_CONST(0.0157073960), FRAC_CONST(-0.9998766184) }, { FRAC_CONST(-0.3826834261), FRAC_CONST(0.9238795042) }, { FRAC_CONST(-0.7814115286), FRAC_CONST(-0.6240159869) } },
{ { FRAC_CONST(0.9792228341), FRAC_CONST(-0.2027871907) }, { FRAC_CONST(-0.3826834261), FRAC_CONST(-0.9238795042) }, { FRAC_CONST(0.1920081824), FRAC_CONST(-0.9813933372) } },
{ { FRAC_CONST(0.4115142524), FRAC_CONST(0.9114032984) }, { FRAC_CONST(0.9238795042), FRAC_CONST(0.3826834261) }, { FRAC_CONST(0.9589683414), FRAC_CONST(-0.2835132182) } },
{ { FRAC_CONST(-0.7996847630), FRAC_CONST(0.6004201174) }, { FRAC_CONST(-0.9238795042), FRAC_CONST(0.3826834261) }, { FRAC_CONST(0.6947838664), FRAC_CONST(0.7192186117) } },
{ { FRAC_CONST(-0.7604058385), FRAC_CONST(-0.6494481564) }, { FRAC_CONST(0.3826834261), FRAC_CONST(-0.9238795042) }, { FRAC_CONST(-0.3164770305), FRAC_CONST(0.9486001730) } },
{ { FRAC_CONST(0.4679299891), FRAC_CONST(-0.8837655187) }, { FRAC_CONST(0.3826834261), FRAC_CONST(0.9238795042) }, { FRAC_CONST(-0.9874414206), FRAC_CONST(0.1579856575) } },
{ { FRAC_CONST(0.9645573497), FRAC_CONST(0.2638732493) }, { FRAC_CONST(-0.9238795042), FRAC_CONST(-0.3826834261) }, { FRAC_CONST(-0.5966450572), FRAC_CONST(-0.8025052547) } },
{ { FRAC_CONST(-0.0471066870), FRAC_CONST(0.9988898635) }, { FRAC_CONST(0.9238795042), FRAC_CONST(-0.3826834261) }, { FRAC_CONST(0.4357025325), FRAC_CONST(-0.9000906944) } },
{ { FRAC_CONST(-0.9851093888), FRAC_CONST(0.1719288528) }, { FRAC_CONST(-0.3826834261), FRAC_CONST(0.9238795042) }, { FRAC_CONST(0.9995546937), FRAC_CONST(-0.0298405960) } },
{ { FRAC_CONST(-0.3826831877), FRAC_CONST(-0.9238796234) }, { FRAC_CONST(-0.3826834261), FRAC_CONST(-0.9238795042) }, { FRAC_CONST(0.4886211455), FRAC_CONST(0.8724960685) } },
{ { FRAC_CONST(0.8181498647), FRAC_CONST(-0.5750049949) }, { FRAC_CONST(0.9238795042), FRAC_CONST(0.3826834261) }, { FRAC_CONST(-0.5477093458), FRAC_CONST(0.8366686702) } },
{ { FRAC_CONST(0.7396308780), FRAC_CONST(0.6730127335) }, { FRAC_CONST(-0.9238795042), FRAC_CONST(0.3826834261) }, { FRAC_CONST(-0.9951074123), FRAC_CONST(-0.0987988561) } },
{ { FRAC_CONST(-0.4954589605), FRAC_CONST(0.8686313629) }, { FRAC_CONST(0.3826834261), FRAC_CONST(-0.9238795042) }, { FRAC_CONST(-0.3725017905), FRAC_CONST(-0.9280315042) } },
{ { FRAC_CONST(-0.9557929039), FRAC_CONST(-0.2940406799) }, { FRAC_CONST(0.3826834261), FRAC_CONST(0.9238795042) }, { FRAC_CONST(0.6506417990), FRAC_CONST(-0.7593847513) } },
{ { FRAC_CONST(0.0784594864), FRAC_CONST(-0.9969173074) }, { FRAC_CONST(-0.9238795042), FRAC_CONST(-0.3826834261) }, { FRAC_CONST(0.9741733670), FRAC_CONST(0.2258014232) } },
{ { FRAC_CONST(0.9900237322), FRAC_CONST(-0.1409008205) }, { FRAC_CONST(0.9238795042), FRAC_CONST(-0.3826834261) }, { FRAC_CONST(0.2502108514), FRAC_CONST(0.9681913853) } },
{ { FRAC_CONST(0.3534744382), FRAC_CONST(0.9354441762) }, { FRAC_CONST(-0.3826834261), FRAC_CONST(0.9238795042) }, { FRAC_CONST(-0.7427945137), FRAC_CONST(0.6695194840) } },
{ { FRAC_CONST(-0.8358076215), FRAC_CONST(0.5490224361) }, { FRAC_CONST(-0.3826834261), FRAC_CONST(-0.9238795042) }, { FRAC_CONST(-0.9370992780), FRAC_CONST(-0.3490629196) } },
{ { FRAC_CONST(-0.7181259394), FRAC_CONST(-0.6959131360) }, { FRAC_CONST(0.9238795042), FRAC_CONST(0.3826834261) }, { FRAC_CONST(-0.1237744763), FRAC_CONST(-0.9923103452) } },
{ { FRAC_CONST(0.5224990249), FRAC_CONST(-0.8526399136) }, { FRAC_CONST(-0.9238795042), FRAC_CONST(0.3826834261) }, { FRAC_CONST(0.8226406574), FRAC_CONST(-0.5685616732) } },
{ { FRAC_CONST(0.9460852146), FRAC_CONST(0.3239179254) }, { FRAC_CONST(0.3826834261), FRAC_CONST(-0.9238795042) }, { FRAC_CONST(0.8844994903), FRAC_CONST(0.4665412009) } },
{ { FRAC_CONST(-0.1097348556), FRAC_CONST(0.9939609170) }, { FRAC_CONST(0.3826834261), FRAC_CONST(0.9238795042) }, { FRAC_CONST(-0.0047125919), FRAC_CONST(0.9999889135) } },
{ { FRAC_CONST(-0.9939610362), FRAC_CONST(0.1097337380) }, { FRAC_CONST(-0.9238795042), FRAC_CONST(-0.3826834261) }, { FRAC_CONST(-0.8888573647), FRAC_CONST(0.4581840038) } },
{ { FRAC_CONST(-0.3239168525), FRAC_CONST(-0.9460855722) }, { FRAC_CONST(0.9238795042), FRAC_CONST(-0.3826834261) }, { FRAC_CONST(-0.8172453642), FRAC_CONST(-0.5762898922) } },
{ { FRAC_CONST(0.8526405096), FRAC_CONST(-0.5224980116) }, { FRAC_CONST(-0.3826834261), FRAC_CONST(0.9238795042) }, { FRAC_CONST(0.1331215799), FRAC_CONST(-0.9910997152) } },
{ { FRAC_CONST(0.6959123611), FRAC_CONST(0.7181267142) }, { FRAC_CONST(-0.3826834261), FRAC_CONST(-0.9238795042) }, { FRAC_CONST(0.9403476119), FRAC_CONST(-0.3402152061) } },
{ { FRAC_CONST(-0.5490233898), FRAC_CONST(0.8358070254) }, { FRAC_CONST(0.9238795042), FRAC_CONST(0.3826834261) }, { FRAC_CONST(0.7364512086), FRAC_CONST(0.6764906645) } },
{ { FRAC_CONST(-0.9354437590), FRAC_CONST(-0.3534754813) }, { FRAC_CONST(-0.9238795042), FRAC_CONST(0.3826834261) }, { FRAC_CONST(-0.2593250275), FRAC_CONST(0.9657900929) } },
{ { FRAC_CONST(0.1409019381), FRAC_CONST(-0.9900235534) }, { FRAC_CONST(0.3826834261), FRAC_CONST(-0.9238795042) }, { FRAC_CONST(-0.9762582779), FRAC_CONST(0.2166097313) } },
{ { FRAC_CONST(0.9969173670), FRAC_CONST(-0.0784583688) }, { FRAC_CONST(0.3826834261), FRAC_CONST(0.9238795042) }, { FRAC_CONST(-0.6434556246), FRAC_CONST(-0.7654833794) } },
{ { FRAC_CONST(0.2940396070), FRAC_CONST(0.9557932615) }, { FRAC_CONST(-0.9238795042), FRAC_CONST(-0.3826834261) }, { FRAC_CONST(0.3812320232), FRAC_CONST(-0.9244794250) } },
{ { FRAC_CONST(-0.8686318994), FRAC_CONST(0.4954580069) }, { FRAC_CONST(0.9238795042), FRAC_CONST(-0.3826834261) }, { FRAC_CONST(0.9959943891), FRAC_CONST(-0.0894154981) } },
{ { FRAC_CONST(-0.6730118990), FRAC_CONST(-0.7396316528) }, { FRAC_CONST(-0.3826834261), FRAC_CONST(0.9238795042) }, { FRAC_CONST(0.5397993922), FRAC_CONST(0.8417937160) } },
{ { FRAC_CONST(0.5750059485), FRAC_CONST(-0.8181492686) }, { FRAC_CONST(-0.3826834261), FRAC_CONST(-0.9238795042) }, { FRAC_CONST(-0.4968227744), FRAC_CONST(0.8678520322) } },
{ { FRAC_CONST(0.9238792062), FRAC_CONST(0.3826842010) }, { FRAC_CONST(0.9238795042), FRAC_CONST(0.3826834261) }, { FRAC_CONST(-0.9992290139), FRAC_CONST(-0.0392601527) } },
{ { FRAC_CONST(-0.1719299555), FRAC_CONST(0.9851091504) }, { FRAC_CONST(-0.9238795042), FRAC_CONST(0.3826834261) }, { FRAC_CONST(-0.4271997511), FRAC_CONST(-0.9041572809) } },
{ { FRAC_CONST(-0.9988899231), FRAC_CONST(0.0471055657) }, { FRAC_CONST(0.3826834261), FRAC_CONST(-0.9238795042) }, { FRAC_CONST(0.6041822433), FRAC_CONST(-0.7968461514) } },
{ { FRAC_CONST(-0.2638721764), FRAC_CONST(-0.9645576477) }, { FRAC_CONST(0.3826834261), FRAC_CONST(0.9238795042) }, { FRAC_CONST(0.9859085083), FRAC_CONST(0.1672853529) } },
{ { FRAC_CONST(0.8837660551), FRAC_CONST(-0.4679289758) }, { FRAC_CONST(-0.9238795042), FRAC_CONST(-0.3826834261) }, { FRAC_CONST(0.3075223565), FRAC_CONST(0.9515408874) } },
{ { FRAC_CONST(0.6494473219), FRAC_CONST(0.7604066133) }, { FRAC_CONST(0.9238795042), FRAC_CONST(-0.3826834261) }, { FRAC_CONST(-0.7015317082), FRAC_CONST(0.7126382589) } },
{ { FRAC_CONST(-0.6004210114), FRAC_CONST(0.7996840477) }, { FRAC_CONST(-0.3826834261), FRAC_CONST(0.9238795042) }, { FRAC_CONST(-0.9562535882), FRAC_CONST(-0.2925389707) } },
{ { FRAC_CONST(-0.9114028811), FRAC_CONST(-0.4115152657) }, { FRAC_CONST(-0.3826834261), FRAC_CONST(-0.9238795042) }, { FRAC_CONST(-0.1827499419), FRAC_CONST(-0.9831594229) } },
{ { FRAC_CONST(0.2027882934), FRAC_CONST(-0.9792225957) }, { FRAC_CONST(0.9238795042), FRAC_CONST(0.3826834261) }, { FRAC_CONST(0.7872582674), FRAC_CONST(-0.6166234016) } },
{ { FRAC_CONST(0.9998766780), FRAC_CONST(-0.0157062728) }, { FRAC_CONST(-0.9238795042), FRAC_CONST(0.3826834261) }, { FRAC_CONST(0.9107555747), FRAC_CONST(0.4129458666) } },
{ { FRAC_CONST(0.2334443331), FRAC_CONST(0.9723701477) }, { FRAC_CONST(0.3826834261), FRAC_CONST(-0.9238795042) }, { FRAC_CONST(0.0549497530), FRAC_CONST(0.9984891415) } },
{ { FRAC_CONST(-0.8980280757), FRAC_CONST(0.4399381876) }, { FRAC_CONST(0.3826834261), FRAC_CONST(0.9238795042) }, { FRAC_CONST(-0.8599416018), FRAC_CONST(0.5103924870) } },
{ { FRAC_CONST(-0.6252418160), FRAC_CONST(-0.7804310918) }, { FRAC_CONST(-0.9238795042), FRAC_CONST(-0.3826834261) }, { FRAC_CONST(-0.8501682281), FRAC_CONST(-0.5265110731) } },
{ { FRAC_CONST(0.6252435446), FRAC_CONST(-0.7804297209) }, { FRAC_CONST(0.9238795042), FRAC_CONST(-0.3826834261) }, { FRAC_CONST(0.0737608299), FRAC_CONST(-0.9972759485) } },
{ { FRAC_CONST(0.8980270624), FRAC_CONST(0.4399402142) }, { FRAC_CONST(-0.3826834261), FRAC_CONST(0.9238795042) }, { FRAC_CONST(0.9183775187), FRAC_CONST(-0.3957053721) } },
{ { FRAC_CONST(-0.2334465086), FRAC_CONST(0.9723696709) }, { FRAC_CONST(-0.3826834261), FRAC_CONST(-0.9238795042) }, { FRAC_CONST(0.7754954696), FRAC_CONST(0.6313531399) } },
{ { FRAC_CONST(-0.9998766184), FRAC_CONST(-0.0157085191) }, { FRAC_CONST(0.9238795042), FRAC_CONST(0.3826834261) }, { FRAC_CONST(-0.2012493610), FRAC_CONST(0.9795400500) } },
{ { FRAC_CONST(-0.2027861029), FRAC_CONST(-0.9792230725) }, { FRAC_CONST(-0.9238795042), FRAC_CONST(0.3826834261) }, { FRAC_CONST(-0.9615978599), FRAC_CONST(0.2744622827) } },
{ { FRAC_CONST(0.9114037752), FRAC_CONST(-0.4115132093) }, { FRAC_CONST(0.3826834261), FRAC_CONST(-0.9238795042) }, { FRAC_CONST(-0.6879743338), FRAC_CONST(-0.7257350087) } },
{ { FRAC_CONST(0.6004192233), FRAC_CONST(0.7996854186) }, { FRAC_CONST(0.3826834261), FRAC_CONST(0.9238795042) }, { FRAC_CONST(0.3254036009), FRAC_CONST(-0.9455752373) } },
{ { FRAC_CONST(-0.6494490504), FRAC_CONST(0.7604051232) }, { FRAC_CONST(-0.9238795042), FRAC_CONST(-0.3826834261) }, { FRAC_CONST(0.9888865948), FRAC_CONST(-0.1486719251) } },
{ { FRAC_CONST(-0.8837650418), FRAC_CONST(-0.4679309726) }, { FRAC_CONST(0.9238795042), FRAC_CONST(-0.3826834261) }, { FRAC_CONST(0.5890548825), FRAC_CONST(0.8080930114) } },
{ { FRAC_CONST(0.2638743520), FRAC_CONST(-0.9645570517) }, { FRAC_CONST(-0.3826834261), FRAC_CONST(0.9238795042) }, { FRAC_CONST(-0.4441666007), FRAC_CONST(0.8959442377) } },
{ { FRAC_CONST(0.9988898039), FRAC_CONST(0.0471078083) }, { FRAC_CONST(-0.3826834261), FRAC_CONST(-0.9238795042) }, { FRAC_CONST(-0.9997915030), FRAC_CONST(0.0204183888) } },
{ { FRAC_CONST(0.1719277352), FRAC_CONST(0.9851095676) }, { FRAC_CONST(0.9238795042), FRAC_CONST(0.3826834261) }, { FRAC_CONST(-0.4803760946), FRAC_CONST(-0.8770626187) } },
{ { FRAC_CONST(-0.9238800406), FRAC_CONST(0.3826821446) }, { FRAC_CONST(-0.9238795042), FRAC_CONST(0.3826834261) }, { FRAC_CONST(0.5555707216), FRAC_CONST(-0.8314692974) } },
{ { FRAC_CONST(-0.5750041008), FRAC_CONST(-0.8181505203) }, { FRAC_CONST(0.3826834261), FRAC_CONST(-0.9238795042) }, { FRAC_CONST(0.9941320419), FRAC_CONST(0.1081734300) } }
};
/* RE(Q_Fract_allpass_SubQmf20[j][i]) = (float)cos(M_PI*f_center_20[j]*frac_delay_q[i]); */
/* IM(Q_Fract_allpass_SubQmf20[j][i]) = (float)sin(M_PI*f_center_20[j]*frac_delay_q[i]); */
static const complex_t Q_Fract_allpass_SubQmf20[][3] = {
{ { FRAC_CONST(0.9857769012), FRAC_CONST(0.1680592746) }, { FRAC_CONST(0.9569403529), FRAC_CONST(0.2902846634) }, { FRAC_CONST(0.9907300472), FRAC_CONST(0.1358452588) } },
{ { FRAC_CONST(0.8744080663), FRAC_CONST(0.4851911962) }, { FRAC_CONST(0.6343932748), FRAC_CONST(0.7730104327) }, { FRAC_CONST(0.9175986052), FRAC_CONST(0.3975082636) } },
{ { FRAC_CONST(0.6642524004), FRAC_CONST(0.7475083470) }, { FRAC_CONST(0.0980171412), FRAC_CONST(0.9951847196) }, { FRAC_CONST(0.7767338753), FRAC_CONST(0.6298289299) } },
{ { FRAC_CONST(0.3790524006), FRAC_CONST(0.9253752232) }, { FRAC_CONST(-0.4713967443), FRAC_CONST(0.8819212914) }, { FRAC_CONST(0.5785340071), FRAC_CONST(0.8156582713) } },
{ { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) } },
{ { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) } },
{ { FRAC_CONST(0.8744080663), FRAC_CONST(-0.4851911962) }, { FRAC_CONST(0.6343932748), FRAC_CONST(-0.7730104327) }, { FRAC_CONST(0.9175986052), FRAC_CONST(-0.3975082636) } },
{ { FRAC_CONST(0.9857769012), FRAC_CONST(-0.1680592746) }, { FRAC_CONST(0.9569403529), FRAC_CONST(-0.2902846634) }, { FRAC_CONST(0.9907300472), FRAC_CONST(-0.1358452588) } },
{ { FRAC_CONST(-0.7126385570), FRAC_CONST(0.7015314102) }, { FRAC_CONST(-0.5555702448), FRAC_CONST(-0.8314695954) }, { FRAC_CONST(-0.3305967748), FRAC_CONST(0.9437720776) } },
{ { FRAC_CONST(-0.1175374240), FRAC_CONST(0.9930684566) }, { FRAC_CONST(-0.9807852507), FRAC_CONST(0.1950903237) }, { FRAC_CONST(0.2066311091), FRAC_CONST(0.9784189463) } },
{ { FRAC_CONST(-0.9947921634), FRAC_CONST(0.1019244045) }, { FRAC_CONST(0.5555702448), FRAC_CONST(-0.8314695954) }, { FRAC_CONST(-0.7720130086), FRAC_CONST(0.6356067061) } },
{ { FRAC_CONST(-0.8400934935), FRAC_CONST(-0.5424416065) }, { FRAC_CONST(0.9807852507), FRAC_CONST(0.1950903237) }, { FRAC_CONST(-0.9896889329), FRAC_CONST(0.1432335079) } }
};
/* RE(Q_Fract_allpass_SubQmf34[j][i]) = (float)cos(M_PI*f_center_34[j]*frac_delay_q[i]); */
/* IM(Q_Fract_allpass_SubQmf34[j][i]) = (float)sin(M_PI*f_center_34[j]*frac_delay_q[i]); */
static const complex_t Q_Fract_allpass_SubQmf34[][3] = {
{ { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) } },
{ { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) } },
{ { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) } },
{ { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) } },
{ { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) } },
{ { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) } },
{ { FRAC_CONST(0.2181432247), FRAC_CONST(0.9759167433) }, { FRAC_CONST(-0.7071067691), FRAC_CONST(0.7071067691) }, { FRAC_CONST(0.4623677433), FRAC_CONST(0.8866882324) } },
{ { FRAC_CONST(0.2181432247), FRAC_CONST(0.9759167433) }, { FRAC_CONST(-0.7071067691), FRAC_CONST(0.7071067691) }, { FRAC_CONST(0.4623677433), FRAC_CONST(0.8866882324) } },
{ { FRAC_CONST(0.2181432247), FRAC_CONST(0.9759167433) }, { FRAC_CONST(-0.7071067691), FRAC_CONST(0.7071067691) }, { FRAC_CONST(0.4623677433), FRAC_CONST(0.8866882324) } },
{ { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) } },
{ { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) } },
{ { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) } },
{ { FRAC_CONST(-0.9048270583), FRAC_CONST(0.4257792532) }, { FRAC_CONST(-0.0000000000), FRAC_CONST(-1.0000000000) }, { FRAC_CONST(-0.5724321604), FRAC_CONST(0.8199520707) } },
{ { FRAC_CONST(-0.9048270583), FRAC_CONST(0.4257792532) }, { FRAC_CONST(-0.0000000000), FRAC_CONST(-1.0000000000) }, { FRAC_CONST(-0.5724321604), FRAC_CONST(0.8199520707) } },
{ { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) } },
{ { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(1.0000000000), FRAC_CONST(0.0000000000) } },
{ { FRAC_CONST(0.2181432247), FRAC_CONST(0.9759167433) }, { FRAC_CONST(-0.7071067691), FRAC_CONST(0.7071067691) }, { FRAC_CONST(0.4623677433), FRAC_CONST(0.8866882324) } },
{ { FRAC_CONST(0.2181432247), FRAC_CONST(0.9759167433) }, { FRAC_CONST(-0.7071067691), FRAC_CONST(0.7071067691) }, { FRAC_CONST(0.4623677433), FRAC_CONST(0.8866882324) } },
{ { FRAC_CONST(0.2181432247), FRAC_CONST(0.9759167433) }, { FRAC_CONST(-0.7071067691), FRAC_CONST(0.7071067691) }, { FRAC_CONST(0.4623677433), FRAC_CONST(0.8866882324) } },
{ { FRAC_CONST(0.2181432247), FRAC_CONST(0.9759167433) }, { FRAC_CONST(-0.7071067691), FRAC_CONST(0.7071067691) }, { FRAC_CONST(0.4623677433), FRAC_CONST(0.8866882324) } },
{ { FRAC_CONST(-0.9048270583), FRAC_CONST(0.4257792532) }, { FRAC_CONST(-0.0000000000), FRAC_CONST(-1.0000000000) }, { FRAC_CONST(-0.5724321604), FRAC_CONST(0.8199520707) } },
{ { FRAC_CONST(-0.9048270583), FRAC_CONST(0.4257792532) }, { FRAC_CONST(-0.0000000000), FRAC_CONST(-1.0000000000) }, { FRAC_CONST(-0.5724321604), FRAC_CONST(0.8199520707) } },
{ { FRAC_CONST(-0.6129069924), FRAC_CONST(-0.7901550531) }, { FRAC_CONST(0.7071067691), FRAC_CONST(0.7071067691) }, { FRAC_CONST(-0.9917160273), FRAC_CONST(-0.1284494549) } },
{ { FRAC_CONST(0.2181432247), FRAC_CONST(0.9759167433) }, { FRAC_CONST(-0.7071067691), FRAC_CONST(0.7071067691) }, { FRAC_CONST(0.4623677433), FRAC_CONST(0.8866882324) } },
{ { FRAC_CONST(0.6374240518), FRAC_CONST(-0.7705131769) }, { FRAC_CONST(-1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(-0.3446428776), FRAC_CONST(-0.9387338758) } },
{ { FRAC_CONST(-0.9048270583), FRAC_CONST(0.4257792532) }, { FRAC_CONST(-0.0000000000), FRAC_CONST(-1.0000000000) }, { FRAC_CONST(-0.5724321604), FRAC_CONST(0.8199520707) } },
{ { FRAC_CONST(-0.6129069924), FRAC_CONST(-0.7901550531) }, { FRAC_CONST(0.7071067691), FRAC_CONST(0.7071067691) }, { FRAC_CONST(-0.9917160273), FRAC_CONST(-0.1284494549) } },
{ { FRAC_CONST(-0.6129069924), FRAC_CONST(-0.7901550531) }, { FRAC_CONST(0.7071067691), FRAC_CONST(0.7071067691) }, { FRAC_CONST(-0.9917160273), FRAC_CONST(-0.1284494549) } },
{ { FRAC_CONST(0.6374240518), FRAC_CONST(-0.7705131769) }, { FRAC_CONST(-1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(-0.3446428776), FRAC_CONST(-0.9387338758) } },
{ { FRAC_CONST(0.6374240518), FRAC_CONST(-0.7705131769) }, { FRAC_CONST(-1.0000000000), FRAC_CONST(0.0000000000) }, { FRAC_CONST(-0.3446428776), FRAC_CONST(-0.9387338758) } },
{ { FRAC_CONST(0.8910064697), FRAC_CONST(0.4539906085) }, { FRAC_CONST(0.7071067691), FRAC_CONST(-0.7071067691) }, { FRAC_CONST(0.6730125546), FRAC_CONST(-0.7396310568) } },
{ { FRAC_CONST(-0.6129069924), FRAC_CONST(-0.7901550531) }, { FRAC_CONST(0.7071067691), FRAC_CONST(0.7071067691) }, { FRAC_CONST(-0.9917160273), FRAC_CONST(-0.1284494549) } }
};
static float quant_rho[8] =
{
FRAC_CONST(1.0), FRAC_CONST(0.937), FRAC_CONST(0.84118), FRAC_CONST(0.60092),
FRAC_CONST(0.36764), FRAC_CONST(0.0), FRAC_CONST(-0.589), FRAC_CONST(-1.0)
};
static const uint8_t quant_iid_normal[7] =
{
2, 4, 7, 10, 14, 18, 25
};
static const uint8_t quant_iid_fine[15] =
{
2, 4, 6, 8, 10, 13, 16, 19, 22, 25, 30, 35, 40, 45, 50
};
static const real_t cos_alphas[] = {
COEF_CONST(1.0000000000), COEF_CONST(0.9841239700), COEF_CONST(0.9594738210),
COEF_CONST(0.8946843079), COEF_CONST(0.8269340931), COEF_CONST(0.7071067812),
COEF_CONST(0.4533210856), COEF_CONST(0.0000000000)
};
static const real_t sin_alphas[] = {
COEF_CONST(0.0000000000), COEF_CONST(0.1774824264), COEF_CONST(0.2817977763),
COEF_CONST(0.4466989918), COEF_CONST(0.5622988580), COEF_CONST(0.7071067812),
COEF_CONST(0.8913472911), COEF_CONST(1.0000000000)
};
static const real_t cos_betas_normal[][8] = {
{ COEF_CONST(1.0000000000), COEF_CONST(1.0000000000), COEF_CONST(1.0000000000), COEF_CONST(1.0000000000), COEF_CONST(1.0000000000), COEF_CONST(1.0000000000), COEF_CONST(1.0000000000), COEF_CONST(1.0000000000) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9995871699), COEF_CONST(0.9989419133), COEF_CONST(0.9972204583), COEF_CONST(0.9953790839), COEF_CONST(0.9920112747), COEF_CONST(0.9843408180), COEF_CONST(0.9681727381) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9984497744), COEF_CONST(0.9960279377), COEF_CONST(0.9895738413), COEF_CONST(0.9826814632), COEF_CONST(0.9701058164), COEF_CONST(0.9416098832), COEF_CONST(0.8822105900) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9959398908), COEF_CONST(0.9896038018), COEF_CONST(0.9727589768), COEF_CONST(0.9548355329), COEF_CONST(0.9223070404), COEF_CONST(0.8494349490), COEF_CONST(0.7013005535) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9932417400), COEF_CONST(0.9827071856), COEF_CONST(0.9547730996), COEF_CONST(0.9251668930), COEF_CONST(0.8717461589), COEF_CONST(0.7535520592), COEF_CONST(0.5198827312) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9902068095), COEF_CONST(0.9749613872), COEF_CONST(0.9346538534), COEF_CONST(0.8921231300), COEF_CONST(0.8158851259), COEF_CONST(0.6495964302), COEF_CONST(0.3313370772) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9880510933), COEF_CONST(0.9694670261), COEF_CONST(0.9204347876), COEF_CONST(0.8688622825), COEF_CONST(0.7768516704), COEF_CONST(0.5782161800), COEF_CONST(0.2069970356) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9858996945), COEF_CONST(0.9639898866), COEF_CONST(0.9063034786), COEF_CONST(0.8458214608), COEF_CONST(0.7384262300), COEF_CONST(0.5089811277), COEF_CONST(0.0905465944) }
};
static const real_t sin_betas_normal[][8] = {
{ COEF_CONST(0.0000000000), COEF_CONST(0.0000000000), COEF_CONST(0.0000000000), COEF_CONST(0.0000000000), COEF_CONST(0.0000000000), COEF_CONST(0.0000000000), COEF_CONST(0.0000000000), COEF_CONST(0.0000000000) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.0287313368), COEF_CONST(-0.0459897147), COEF_CONST(-0.0745074328), COEF_CONST(-0.0960233266), COEF_CONST(-0.1261492408), COEF_CONST(-0.1762757894), COEF_CONST(-0.2502829383) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.0556601118), COEF_CONST(-0.0890412670), COEF_CONST(-0.1440264301), COEF_CONST(-0.1853028382), COEF_CONST(-0.2426823129), COEF_CONST(-0.3367058477), COEF_CONST(-0.4708550466) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.0900207420), COEF_CONST(-0.1438204281), COEF_CONST(-0.2318188366), COEF_CONST(-0.2971348264), COEF_CONST(-0.3864579191), COEF_CONST(-0.5276933461), COEF_CONST(-0.7128657193) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.1160639735), COEF_CONST(-0.1851663774), COEF_CONST(-0.2973353800), COEF_CONST(-0.3795605619), COEF_CONST(-0.4899577884), COEF_CONST(-0.6573882369), COEF_CONST(-0.8542376401) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.1396082894), COEF_CONST(-0.2223742196), COEF_CONST(-0.3555589603), COEF_CONST(-0.4517923427), COEF_CONST(-0.5782140273), COEF_CONST(-0.7602792104), COEF_CONST(-0.9435124489) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.1541266914), COEF_CONST(-0.2452217065), COEF_CONST(-0.3908961522), COEF_CONST(-0.4950538699), COEF_CONST(-0.6296836366), COEF_CONST(-0.8158836002), COEF_CONST(-0.9783415698) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.1673373610), COEF_CONST(-0.2659389001), COEF_CONST(-0.4226275012), COEF_CONST(-0.5334660781), COEF_CONST(-0.6743342664), COEF_CONST(-0.8607776784), COEF_CONST(-0.9958922202) }
};
static const real_t cos_betas_fine[][8] = {
{ COEF_CONST(1.0000000000), COEF_CONST(1.0000000000), COEF_CONST(1.0000000000), COEF_CONST(1.0000000000), COEF_CONST(1.0000000000), COEF_CONST(1.0000000000), COEF_CONST(1.0000000000), COEF_CONST(1.0000000000) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9995871699), COEF_CONST(0.9989419133), COEF_CONST(0.9972204583), COEF_CONST(0.9953790839), COEF_CONST(0.9920112747), COEF_CONST(0.9843408180), COEF_CONST(0.9681727381) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9984497744), COEF_CONST(0.9960279377), COEF_CONST(0.9895738413), COEF_CONST(0.9826814632), COEF_CONST(0.9701058164), COEF_CONST(0.9416098832), COEF_CONST(0.8822105900) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9968361371), COEF_CONST(0.9918968104), COEF_CONST(0.9787540479), COEF_CONST(0.9647515190), COEF_CONST(0.9392903010), COEF_CONST(0.8820167114), COEF_CONST(0.7645325390) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9950262915), COEF_CONST(0.9872675041), COEF_CONST(0.9666584578), COEF_CONST(0.9447588606), COEF_CONST(0.9050918405), COEF_CONST(0.8165997379), COEF_CONST(0.6383824796) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9932417400), COEF_CONST(0.9827071856), COEF_CONST(0.9547730996), COEF_CONST(0.9251668930), COEF_CONST(0.8717461589), COEF_CONST(0.7535520592), COEF_CONST(0.5198827312) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9908827998), COEF_CONST(0.9766855904), COEF_CONST(0.9391249214), COEF_CONST(0.8994531782), COEF_CONST(0.8282352693), COEF_CONST(0.6723983174), COEF_CONST(0.3719473225) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9890240165), COEF_CONST(0.9719459866), COEF_CONST(0.9268448110), COEF_CONST(0.8793388536), COEF_CONST(0.7944023271), COEF_CONST(0.6101812098), COEF_CONST(0.2621501145) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9876350461), COEF_CONST(0.9684073447), COEF_CONST(0.9176973944), COEF_CONST(0.8643930070), COEF_CONST(0.7693796058), COEF_CONST(0.5646720713), COEF_CONST(0.1838899556) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9866247085), COEF_CONST(0.9658349704), COEF_CONST(0.9110590761), COEF_CONST(0.8535668048), COEF_CONST(0.7513165426), COEF_CONST(0.5320914819), COEF_CONST(0.1289530943) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9858996945), COEF_CONST(0.9639898866), COEF_CONST(0.9063034786), COEF_CONST(0.8458214608), COEF_CONST(0.7384262300), COEF_CONST(0.5089811277), COEF_CONST(0.0905465944) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9851245614), COEF_CONST(0.9620180268), COEF_CONST(0.9012265590), COEF_CONST(0.8375623272), COEF_CONST(0.7247108045), COEF_CONST(0.4845204297), COEF_CONST(0.0504115003) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9846869856), COEF_CONST(0.9609052357), COEF_CONST(0.8983639533), COEF_CONST(0.8329098386), COEF_CONST(0.7169983441), COEF_CONST(0.4708245354), COEF_CONST(0.0281732509) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9844406325), COEF_CONST(0.9602788522), COEF_CONST(0.8967533934), COEF_CONST(0.8302936455), COEF_CONST(0.7126658102), COEF_CONST(0.4631492839), COEF_CONST(0.0157851140) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9843020502), COEF_CONST(0.9599265269), COEF_CONST(0.8958477331), COEF_CONST(0.8288229094), COEF_CONST(0.7102315840), COEF_CONST(0.4588429315), COEF_CONST(0.0088578059) },
{ COEF_CONST(1.0000000000), COEF_CONST(0.9842241136), COEF_CONST(0.9597283916), COEF_CONST(0.8953385094), COEF_CONST(0.8279961409), COEF_CONST(0.7088635748), COEF_CONST(0.4564246834), COEF_CONST(0.0049751355) }
};
static const real_t sin_betas_fine[][8] = {
{ COEF_CONST(0.0000000000), COEF_CONST(0.0000000000), COEF_CONST(0.0000000000), COEF_CONST(0.0000000000), COEF_CONST(0.0000000000), COEF_CONST(0.0000000000), COEF_CONST(0.0000000000), COEF_CONST(0.0000000000) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.0287313368), COEF_CONST(-0.0459897147), COEF_CONST(-0.0745074328), COEF_CONST(-0.0960233266), COEF_CONST(-0.1261492408), COEF_CONST(-0.1762757894), COEF_CONST(-0.2502829383) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.0556601118), COEF_CONST(-0.0890412670), COEF_CONST(-0.1440264301), COEF_CONST(-0.1853028382), COEF_CONST(-0.2426823129), COEF_CONST(-0.3367058477), COEF_CONST(-0.4708550466) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.0794840594), COEF_CONST(-0.1270461238), COEF_CONST(-0.2050378347), COEF_CONST(-0.2631625097), COEF_CONST(-0.3431234916), COEF_CONST(-0.4712181245), COEF_CONST(-0.6445851354) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.0996126459), COEF_CONST(-0.1590687758), COEF_CONST(-0.2560691819), COEF_CONST(-0.3277662204), COEF_CONST(-0.4252161335), COEF_CONST(-0.5772043556), COEF_CONST(-0.7697193058) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.1160639735), COEF_CONST(-0.1851663774), COEF_CONST(-0.2973353800), COEF_CONST(-0.3795605619), COEF_CONST(-0.4899577884), COEF_CONST(-0.6573882369), COEF_CONST(-0.8542376401) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.1347266752), COEF_CONST(-0.2146747714), COEF_CONST(-0.3435758752), COEF_CONST(-0.4370171396), COEF_CONST(-0.5603805303), COEF_CONST(-0.7401895046), COEF_CONST(-0.9282538388) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.1477548470), COEF_CONST(-0.2352041647), COEF_CONST(-0.3754446647), COEF_CONST(-0.4761965776), COEF_CONST(-0.6073919186), COEF_CONST(-0.7922618830), COEF_CONST(-0.9650271071) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.1567705832), COEF_CONST(-0.2493736450), COEF_CONST(-0.3972801182), COEF_CONST(-0.5028167951), COEF_CONST(-0.6387918458), COEF_CONST(-0.8253153651), COEF_CONST(-0.9829468369) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.1630082348), COEF_CONST(-0.2591578860), COEF_CONST(-0.4122758299), COEF_CONST(-0.5209834064), COEF_CONST(-0.6599420072), COEF_CONST(-0.8466868694), COEF_CONST(-0.9916506943) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.1673373610), COEF_CONST(-0.2659389001), COEF_CONST(-0.4226275012), COEF_CONST(-0.5334660781), COEF_CONST(-0.6743342664), COEF_CONST(-0.8607776784), COEF_CONST(-0.9958922202) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.1718417832), COEF_CONST(-0.2729859267), COEF_CONST(-0.4333482310), COEF_CONST(-0.5463417868), COEF_CONST(-0.6890531546), COEF_CONST(-0.8747799456), COEF_CONST(-0.9987285320) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.1743316967), COEF_CONST(-0.2768774604), COEF_CONST(-0.4392518725), COEF_CONST(-0.5534087104), COEF_CONST(-0.6970748701), COEF_CONST(-0.8822268738), COEF_CONST(-0.9996030552) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.1757175038), COEF_CONST(-0.2790421580), COEF_CONST(-0.4425306221), COEF_CONST(-0.5573261722), COEF_CONST(-0.7015037013), COEF_CONST(-0.8862802834), COEF_CONST(-0.9998754073) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.1764921355), COEF_CONST(-0.2802517850), COEF_CONST(-0.4443611583), COEF_CONST(-0.5595110229), COEF_CONST(-0.7039681080), COEF_CONST(-0.8885173967), COEF_CONST(-0.9999607689) },
{ COEF_CONST(0.0000000000), COEF_CONST(-0.1769262394), COEF_CONST(-0.2809295540), COEF_CONST(-0.4453862969), COEF_CONST(-0.5607337966), COEF_CONST(-0.7053456119), COEF_CONST(-0.8897620516), COEF_CONST(-0.9999876239) }
};
static const real_t sf_iid_normal[] = {
COEF_CONST(1.4119827747), COEF_CONST(1.4031381607), COEF_CONST(1.3868767023),
COEF_CONST(1.3483997583), COEF_CONST(1.2912493944), COEF_CONST(1.1960374117),
COEF_CONST(1.1073724031), COEF_CONST(1.0000000000), COEF_CONST(0.8796171546),
COEF_CONST(0.7546485662), COEF_CONST(0.5767799020), COEF_CONST(0.4264014363),
COEF_CONST(0.2767182887), COEF_CONST(0.1766446233), COEF_CONST(0.0794016272)
};
static const real_t sf_iid_fine[] = {
COEF_CONST(1.4142065048), COEF_CONST(1.4141912460), COEF_CONST(1.4141428471),
COEF_CONST(1.4139900208), COEF_CONST(1.4135069847), COEF_CONST(1.4119827747),
COEF_CONST(1.4097729921), COEF_CONST(1.4053947926), COEF_CONST(1.3967796564),
COEF_CONST(1.3800530434), COEF_CONST(1.3483997583), COEF_CONST(1.3139201403),
COEF_CONST(1.2643101215), COEF_CONST(1.1960374117), COEF_CONST(1.1073724031),
COEF_CONST(1.0000000000), COEF_CONST(0.8796171546), COEF_CONST(0.7546485662),
COEF_CONST(0.6336560845), COEF_CONST(0.5230810642), COEF_CONST(0.4264014363),
COEF_CONST(0.3089554012), COEF_CONST(0.2213746458), COEF_CONST(0.1576878875),
COEF_CONST(0.1119822487), COEF_CONST(0.0794016272), COEF_CONST(0.0446990170),
COEF_CONST(0.0251446925), COEF_CONST(0.0141414283), COEF_CONST(0.0079525812),
COEF_CONST(0.0044721137)
};
static const uint8_t group_border20[10+12 + 1] =
{
6, 7, 0, 1, 2, 3, /* 6 subqmf subbands */
9, 8, /* 2 subqmf subbands */
10, 11, /* 2 subqmf subbands */
3, 4, 5, 6, 7, 8, 9, 11, 14, 18, 23, 35, 64
};
static const uint8_t group_border34[32+18 + 1] =
{
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, /* 12 subqmf subbands */
12, 13, 14, 15, 16, 17, 18, 19, /* 8 subqmf subbands */
20, 21, 22, 23, /* 4 subqmf subbands */
24, 25, 26, 27, /* 4 subqmf subbands */
28, 29, 30, 31, /* 4 subqmf subbands */
32-27, 33-27, 34-27, 35-27, 36-27, 37-27, 38-27, 40-27, 42-27, 44-27, 46-27, 48-27, 51-27, 54-27, 57-27, 60-27, 64-27, 68-27, 91-27
};
static const uint16_t map_bins2group20[10+12] =
{
(NEGATE_IPD_MASK | 1), (NEGATE_IPD_MASK | 0),
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19
};
static const uint16_t map_bins2group34[32+18] =
{
0, 1, 2, 3, 4, 5, 6, 6, 7, (NEGATE_IPD_MASK | 2), (NEGATE_IPD_MASK | 1), (NEGATE_IPD_MASK | 0),
10, 10, 4, 5, 6, 7, 8, 9,
10, 11, 12, 9,
14, 11, 12, 13,
14, 15, 16, 13,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33
};
/* type definitions */
typedef struct
{
uint8_t frame_len;
uint8_t resolution20[3];
uint8_t resolution34[5];
qmf_t *work;
qmf_t **buffer;
qmf_t **temp;
} hyb_info;
/* static function declarations */
static void ps_data_decode(ps_info *ps);
static hyb_info *hybrid_init();
static void channel_filter2(hyb_info *hyb, uint8_t frame_len, const real_t *filter,
qmf_t *buffer, qmf_t **X_hybrid);
static void INLINE DCT3_4_unscaled(real_t *y, real_t *x);
static void channel_filter8(hyb_info *hyb, uint8_t frame_len, const real_t *filter,
qmf_t *buffer, qmf_t **X_hybrid);
static void hybrid_analysis(hyb_info *hyb, qmf_t X[32][64], qmf_t X_hybrid[32][32],
uint8_t use34);
static void hybrid_synthesis(hyb_info *hyb, qmf_t X[32][64], qmf_t X_hybrid[32][32],
uint8_t use34);
static int8_t delta_clip(int8_t i, int8_t min, int8_t max);
static void delta_decode(uint8_t enable, int8_t *index, uint8_t *index_prev,
uint8_t dt_flag, uint8_t nr_par, uint8_t stride,
int8_t min_index, int8_t max_index);
static void map20indexto34(int8_t *index, uint8_t bins);
#ifdef PS_LOW_POWER
static void map34indexto20(int8_t *index, uint8_t bins);
#endif
static void ps_data_decode(ps_info *ps);
static void ps_decorrelate(ps_info *ps, qmf_t X_left[38][64], qmf_t X_right[38][64],
qmf_t X_hybrid_left[32][32], qmf_t X_hybrid_right[32][32]);
static void ps_mix_phase(ps_info *ps, qmf_t X_left[38][64], qmf_t X_right[38][64],
qmf_t X_hybrid_left[32][32], qmf_t X_hybrid_right[32][32]);
/* */
static hyb_info *hybrid_init()
{
uint8_t i;
hyb_info *hyb = (hyb_info*)faad_malloc(sizeof(hyb_info));
hyb->resolution34[0] = 12;
hyb->resolution34[1] = 8;
hyb->resolution34[2] = 4;
hyb->resolution34[3] = 4;
hyb->resolution34[4] = 4;
hyb->resolution20[0] = 8;
hyb->resolution20[1] = 2;
hyb->resolution20[2] = 2;
hyb->frame_len = 32;
hyb->work = (qmf_t*)faad_malloc((hyb->frame_len+12) * sizeof(qmf_t));
memset(hyb->work, 0, (hyb->frame_len+12) * sizeof(qmf_t));
hyb->buffer = (qmf_t**)faad_malloc(5 * sizeof(qmf_t*));
for (i = 0; i < 5; i++)
{
hyb->buffer[i] = (qmf_t*)faad_malloc(hyb->frame_len * sizeof(qmf_t));
memset(hyb->buffer[i], 0, hyb->frame_len * sizeof(qmf_t));
}
hyb->temp = (qmf_t**)faad_malloc(hyb->frame_len * sizeof(qmf_t*));
for (i = 0; i < hyb->frame_len; i++)
{
hyb->temp[i] = (qmf_t*)faad_malloc(12 /*max*/ * sizeof(qmf_t));
}
return hyb;
}
/* real filter, size 2 */
static void channel_filter2(hyb_info *hyb, uint8_t frame_len, const real_t *filter,
qmf_t *buffer, qmf_t **X_hybrid)
{
uint8_t i;
for (i = 0; i < frame_len; i++)
{
/* q = 0 */
QMF_RE(X_hybrid[i][0]) =
MUL_F(filter[0],(QMF_RE(buffer[0+i]) + QMF_RE(buffer[12+i]))) +
MUL_F(filter[1],(QMF_RE(buffer[1+i]) + QMF_RE(buffer[11+i]))) +
MUL_F(filter[2],(QMF_RE(buffer[2+i]) + QMF_RE(buffer[10+i]))) +
MUL_F(filter[3],(QMF_RE(buffer[3+i]) + QMF_RE(buffer[9+i]))) +
MUL_F(filter[4],(QMF_RE(buffer[4+i]) + QMF_RE(buffer[8+i]))) +
MUL_F(filter[5],(QMF_RE(buffer[5+i]) + QMF_RE(buffer[7+i]))) +
MUL_F(filter[6],QMF_RE(buffer[6+i]));
QMF_IM(X_hybrid[i][0]) =
MUL_F(filter[0],(QMF_IM(buffer[0+i]) + QMF_IM(buffer[12+i]))) +
MUL_F(filter[1],(QMF_IM(buffer[1+i]) + QMF_IM(buffer[11+i]))) +
MUL_F(filter[2],(QMF_IM(buffer[2+i]) + QMF_IM(buffer[10+i]))) +
MUL_F(filter[3],(QMF_IM(buffer[3+i]) + QMF_IM(buffer[9+i]))) +
MUL_F(filter[4],(QMF_IM(buffer[4+i]) + QMF_IM(buffer[8+i]))) +
MUL_F(filter[5],(QMF_IM(buffer[5+i]) + QMF_IM(buffer[7+i]))) +
MUL_F(filter[6],QMF_IM(buffer[6+i]));
/* q = 1 */
QMF_RE(X_hybrid[i][1]) =
MUL_F(filter[0],(QMF_RE(buffer[0+i]) + QMF_RE(buffer[12+i]))) -
MUL_F(filter[1],(QMF_RE(buffer[1+i]) + QMF_RE(buffer[11+i]))) +
MUL_F(filter[2],(QMF_RE(buffer[2+i]) + QMF_RE(buffer[10+i]))) -
MUL_F(filter[3],(QMF_RE(buffer[3+i]) + QMF_RE(buffer[9+i]))) +
MUL_F(filter[4],(QMF_RE(buffer[4+i]) + QMF_RE(buffer[8+i]))) -
MUL_F(filter[5],(QMF_RE(buffer[5+i]) + QMF_RE(buffer[7+i]))) +
MUL_F(filter[6],QMF_RE(buffer[6+i]));
QMF_IM(X_hybrid[i][1]) =
MUL_F(filter[0],(QMF_IM(buffer[0+i]) + QMF_IM(buffer[12+i]))) -
MUL_F(filter[1],(QMF_IM(buffer[1+i]) + QMF_IM(buffer[11+i]))) +
MUL_F(filter[2],(QMF_IM(buffer[2+i]) + QMF_IM(buffer[10+i]))) -
MUL_F(filter[3],(QMF_IM(buffer[3+i]) + QMF_IM(buffer[9+i]))) +
MUL_F(filter[4],(QMF_IM(buffer[4+i]) + QMF_IM(buffer[8+i]))) -
MUL_F(filter[5],(QMF_IM(buffer[5+i]) + QMF_IM(buffer[7+i]))) +
MUL_F(filter[6],QMF_IM(buffer[6+i]));
}
}
static void INLINE DCT3_4_unscaled(real_t *y, real_t *x)
{
real_t f0, f1, f2, f3, f4, f5, f6, f7, f8;
f0 = MUL_F(x[2], FRAC_CONST(0.7071067811865476));
f1 = x[0] - f0;
f2 = x[0] + f0;
f3 = x[1] + x[3];
f4 = MUL_C(x[1], COEF_CONST(1.3065629648763766));
f5 = MUL_F(f3, FRAC_CONST(-0.9238795325112866));
f6 = MUL_F(x[3], FRAC_CONST(-0.5411961001461967));
f7 = f4 + f5;
f8 = f6 - f5;
y[3] = f2 - f8;
y[0] = f2 + f8;
y[2] = f1 - f7;
y[1] = f1 + f7;
}
/* complex filter, size 8 */
static void channel_filter8(hyb_info *hyb, uint8_t frame_len, const real_t *filter,
qmf_t *buffer, qmf_t **X_hybrid)
{
uint8_t i, n;
real_t input_re1[4], input_re2[4], input_im1[4], input_im2[4];
real_t x[4];
for (i = 0; i < frame_len; i++)
{
input_re1[0] = MUL_F(filter[6],QMF_RE(buffer[6+i]));
input_re1[1] = MUL_F(filter[5],(QMF_RE(buffer[5+i]) + QMF_RE(buffer[7+i])));
input_re1[2] = -MUL_F(filter[0],(QMF_RE(buffer[0+i]) + QMF_RE(buffer[12+i]))) + MUL_F(filter[4],(QMF_RE(buffer[4+i]) + QMF_RE(buffer[8+i])));
input_re1[3] = -MUL_F(filter[1],(QMF_RE(buffer[1+i]) + QMF_RE(buffer[11+i]))) + MUL_F(filter[3],(QMF_RE(buffer[3+i]) + QMF_RE(buffer[9+i])));
input_im1[0] = MUL_F(filter[5],(QMF_IM(buffer[7+i]) - QMF_IM(buffer[5+i])));
input_im1[1] = MUL_F(filter[0],(QMF_IM(buffer[12+i]) - QMF_IM(buffer[0+i]))) + MUL_F(filter[4],(QMF_IM(buffer[8+i]) - QMF_IM(buffer[4+i])));
input_im1[2] = MUL_F(filter[1],(QMF_IM(buffer[11+i]) - QMF_IM(buffer[1+i]))) + MUL_F(filter[3],(QMF_IM(buffer[9+i]) - QMF_IM(buffer[3+i])));
input_im1[3] = MUL_F(filter[2],(QMF_IM(buffer[10+i]) - QMF_IM(buffer[2+i])));
for (n = 0; n < 4; n++)
{
x[n] = input_re1[n] - input_im1[3-n];
}
DCT3_4_unscaled(x, x);
QMF_RE(X_hybrid[i][7]) = x[0];
QMF_RE(X_hybrid[i][5]) = x[2];
QMF_RE(X_hybrid[i][3]) = x[3];
QMF_RE(X_hybrid[i][1]) = x[1];
for (n = 0; n < 4; n++)
{
x[n] = input_re1[n] + input_im1[3-n];
}
DCT3_4_unscaled(x, x);
QMF_RE(X_hybrid[i][6]) = x[1];
QMF_RE(X_hybrid[i][4]) = x[3];
QMF_RE(X_hybrid[i][2]) = x[2];
QMF_RE(X_hybrid[i][0]) = x[0];
input_im2[0] = MUL_F(filter[6],QMF_IM(buffer[6+i]));
input_im2[1] = MUL_F(filter[5],(QMF_IM(buffer[5+i]) + QMF_IM(buffer[7+i])));
input_im2[2] = -MUL_F(filter[0],(QMF_IM(buffer[0+i]) + QMF_IM(buffer[12+i]))) + MUL_F(filter[4],(QMF_IM(buffer[4+i]) + QMF_IM(buffer[8+i])));
input_im2[3] = -MUL_F(filter[1],(QMF_IM(buffer[1+i]) + QMF_IM(buffer[11+i]))) + MUL_F(filter[3],(QMF_IM(buffer[3+i]) + QMF_IM(buffer[9+i])));
input_re2[0] = MUL_F(filter[5],(QMF_RE(buffer[7+i]) - QMF_RE(buffer[5+i])));
input_re2[1] = MUL_F(filter[0],(QMF_RE(buffer[12+i]) - QMF_RE(buffer[0+i]))) + MUL_F(filter[4],(QMF_RE(buffer[8+i]) - QMF_RE(buffer[4+i])));
input_re2[2] = MUL_F(filter[1],(QMF_RE(buffer[11+i]) - QMF_RE(buffer[1+i]))) + MUL_F(filter[3],(QMF_RE(buffer[9+i]) - QMF_RE(buffer[3+i])));
input_re2[3] = MUL_F(filter[2],(QMF_RE(buffer[10+i]) - QMF_RE(buffer[2+i])));
for (n = 0; n < 4; n++)
{
x[n] = input_im2[n] + input_re2[3-n];
}
DCT3_4_unscaled(x, x);
QMF_IM(X_hybrid[i][7]) = x[0];
QMF_IM(X_hybrid[i][5]) = x[2];
QMF_IM(X_hybrid[i][3]) = x[3];
QMF_IM(X_hybrid[i][1]) = x[1];
for (n = 0; n < 4; n++)
{
x[n] = input_im2[n] - input_re2[3-n];
}
DCT3_4_unscaled(x, x);
QMF_IM(X_hybrid[i][6]) = x[1];
QMF_IM(X_hybrid[i][4]) = x[3];
QMF_IM(X_hybrid[i][2]) = x[2];
QMF_IM(X_hybrid[i][0]) = x[0];
}
}
/* Hybrid analysis: further split up QMF subbands
* to improve frequency resolution
*/
static void hybrid_analysis(hyb_info *hyb, qmf_t X[32][64], qmf_t X_hybrid[32][32],
uint8_t use34)
{
uint8_t k, n, band;
uint8_t offset = 0;
uint8_t qmf_bands = (use34) ? 5 : 3;
uint8_t *resolution = (use34) ? hyb->resolution34 : hyb->resolution20;
for (band = 0; band < qmf_bands; band++)
{
/* build working buffer */
memcpy(hyb->work, hyb->buffer[band], 12 * sizeof(qmf_t));
/* add new samples */
for (n = 0; n < hyb->frame_len; n++)
{
QMF_RE(hyb->work[12 + n]) = QMF_RE(X[n + 6 /*delay*/][band]);
QMF_IM(hyb->work[12 + n]) = QMF_IM(X[n + 6 /*delay*/][band]);
}
/* store samples */
memcpy(hyb->buffer[band], hyb->work + hyb->frame_len, 12 * sizeof(qmf_t));
switch(resolution[band])
{
case 2:
channel_filter2(hyb, hyb->frame_len, p2_13_20, hyb->work, hyb->temp);
break;
case 4:
channel_filter2(hyb, hyb->frame_len, p4_13_34, hyb->work, hyb->temp);
break;
case 8:
channel_filter8(hyb, hyb->frame_len, (use34) ? p8_13_34 : p8_13_20,
hyb->work, hyb->temp);
break;
case 12:
channel_filter2(hyb, hyb->frame_len, p12_13_34, hyb->work, hyb->temp);
break;
}
for (n = 0; n < hyb->frame_len; n++)
{
for (k = 0; k < resolution[band]; k++)
{
QMF_RE(X_hybrid[n][offset + k]) = QMF_RE(hyb->temp[n][k]);
QMF_IM(X_hybrid[n][offset + k]) = QMF_IM(hyb->temp[n][k]);
}
}
offset += resolution[band];
}
/* group hybrid channels */
if (!use34)
{
for (n = 0; n < 32 /*30?*/; n++)
{
QMF_RE(X_hybrid[n][3]) += QMF_RE(X_hybrid[n][4]);
QMF_IM(X_hybrid[n][3]) += QMF_IM(X_hybrid[n][4]);
QMF_RE(X_hybrid[n][4]) = 0;
QMF_IM(X_hybrid[n][4]) = 0;
QMF_RE(X_hybrid[n][2]) += QMF_RE(X_hybrid[n][5]);
QMF_IM(X_hybrid[n][2]) += QMF_IM(X_hybrid[n][5]);
QMF_RE(X_hybrid[n][5]) = 0;
QMF_IM(X_hybrid[n][5]) = 0;
}
}
}
static void hybrid_synthesis(hyb_info *hyb, qmf_t X[32][64], qmf_t X_hybrid[32][32],
uint8_t use34)
{
uint8_t k, n, band;
uint8_t offset = 0;
uint8_t qmf_bands = (use34) ? 5 : 3;
uint8_t *resolution = (use34) ? hyb->resolution34 : hyb->resolution20;
for(band = 0; band < qmf_bands; band++)
{
for (n = 0; n < hyb->frame_len; n++)
{
QMF_RE(X[n][band]) = 0;
QMF_IM(X[n][band]) = 0;
for (k = 0; k < resolution[band]; k++)
{
QMF_RE(X[n][band]) += QMF_RE(X_hybrid[n][offset + k]);
QMF_IM(X[n][band]) += QMF_IM(X_hybrid[n][offset + k]);
}
}
offset += resolution[band];
}
}
/* limits the value i to the range [min,max] */
static int8_t delta_clip(int8_t i, int8_t min, int8_t max)
{
if (i < min)
return min;
else if (i > max)
return max;
else
return i;
}
/* delta decode array */
static void delta_decode(uint8_t enable, int8_t *index, uint8_t *index_prev,
uint8_t dt_flag, uint8_t nr_par, uint8_t stride,
int8_t min_index, int8_t max_index)
{
int8_t i;
if (enable == 1)
{
if (dt_flag == 0)
{
/* delta coded in frequency direction */
index[0] = 0 + index[0];
index[0] = delta_clip(index[0], min_index, max_index);
for (i = 1; i < nr_par; i++)
{
index[i] = index[i-1] + index[i];
index[i] = delta_clip(index[i], min_index, max_index);
}
} else {
/* delta coded in time direction */
for (i = 0; i < nr_par; i++)
{
index[i] = index_prev[i*stride] + index[i];
index[i] = delta_clip(index[i], min_index, max_index);
}
}
} else {
/* set indices to zero */
for (i = 0; i < nr_par; i++)
{
index[i] = 0;
}
}
/* coarse */
if (stride == 2)
{
for (i = (nr_par<<1)-1; i > 0; i--)
{
index[i] = index[i>>1];
}
}
}
#ifdef PS_LOW_POWER
static void map34indexto20(int8_t *index, uint8_t bins)
{
index[0] = (2*index[0]+index[1])/3;
index[1] = (index[1]+2*index[2])/3;
index[2] = (2*index[3]+index[4])/3;
index[3] = (index[4]+2*index[5])/3;
index[4] = (index[6]+index[7])/2;
index[5] = (index[8]+index[9])/2;
index[6] = index[10];
index[7] = index[11];
index[8] = (index[12]+index[13])/2;
index[9] = (index[14]+index[15])/2;
index[10] = index[16];
if (bins == 34)
{
index[11] = index[17];
index[12] = index[18];
index[13] = index[19];
index[14] = (index[20]+index[21])/2;
index[15] = (index[22]+index[23])/2;
index[16] = (index[24]+index[25])/2;
index[17] = (index[26]+index[27])/2;
index[18] = (index[28]+index[29]+index[30]+index[31])/4;
index[19] = (index[32]+index[33])/2;
}
}
#endif
static void map20indexto34(int8_t *index, uint8_t bins)
{
index[0] = index[0];
index[1] = (index[0] + index[1])/2;
index[2] = index[1];
index[3] = index[2];
index[4] = (index[2] + index[3])/2;
index[5] = index[3];
index[6] = index[4];
index[7] = index[4];
index[8] = index[5];
index[9] = index[5];
index[10] = index[6];
index[11] = index[7];
index[12] = index[8];
index[13] = index[8];
index[14] = index[9];
index[15] = index[9];
index[16] = index[10];
if (bins == 34)
{
index[17] = index[11];
index[18] = index[12];
index[19] = index[13];
index[20] = index[14];
index[21] = index[14];
index[22] = index[15];
index[23] = index[15];
index[24] = index[16];
index[25] = index[16];
index[26] = index[17];
index[27] = index[17];
index[28] = index[18];
index[29] = index[18];
index[30] = index[18];
index[31] = index[18];
index[32] = index[19];
index[33] = index[19];
}
}
/* parse the bitstream data decoded in ps_data() */
static void ps_data_decode(ps_info *ps)
{
uint8_t env, bin;
/* ps data not available, use data from previous frame */
if (ps->ps_data_available == 0)
{
ps->num_env = 0;
}
for (env = 0; env < ps->num_env; env++)
{
int8_t *iid_index_prev;
int8_t *icc_index_prev;
int8_t *ipd_index_prev;
int8_t *opd_index_prev;
int8_t num_iid_steps = (ps->iid_mode < 3) ? 7 : 15 /*fine quant*/;
if (env == 0)
{
/* take last envelope from previous frame */
iid_index_prev = ps->iid_index_prev;
icc_index_prev = ps->icc_index_prev;
ipd_index_prev = ps->ipd_index_prev;
opd_index_prev = ps->opd_index_prev;
} else {
/* take index values from previous envelope */
iid_index_prev = ps->iid_index[env - 1];
icc_index_prev = ps->icc_index[env - 1];
ipd_index_prev = ps->ipd_index[env - 1];
opd_index_prev = ps->opd_index[env - 1];
}
/* delta decode iid parameters */
delta_decode(ps->enable_iid, ps->iid_index[env], iid_index_prev,
ps->iid_dt[env], ps->nr_iid_par,
(ps->iid_mode == 0 || ps->iid_mode == 3) ? 2 : 1,
-num_iid_steps, num_iid_steps);
/* delta decode icc parameters */
delta_decode(ps->enable_icc, ps->icc_index[env], icc_index_prev,
ps->icc_dt[env], ps->nr_icc_par,
(ps->icc_mode == 0 || ps->icc_mode == 3) ? 2 : 1,
0, 7);
/* delta decode ipd parameters */
delta_decode(ps->enable_ipdopd, ps->ipd_index[env], ipd_index_prev,
ps->ipd_dt[env], ps->nr_ipdopd_par, 1, -8, 8);
/* delta decode opd parameters */
delta_decode(ps->enable_ipdopd, ps->opd_index[env], opd_index_prev,
ps->opd_dt[env], ps->nr_ipdopd_par, 1, -8, 8);
}
/* handle error case */
if (ps->num_env == 0)
{
/* force to 1 */
ps->num_env = 1;
if (ps->enable_iid)
{
for (bin = 0; bin < 34; bin++)
ps->iid_index[0][bin] = ps->iid_index_prev[bin];
} else {
for (bin = 0; bin < 34; bin++)
ps->iid_index[0][bin] = 0;
}
if (ps->enable_icc)
{
for (bin = 0; bin < 34; bin++)
ps->icc_index[0][bin] = ps->icc_index_prev[bin];
} else {
for (bin = 0; bin < 34; bin++)
ps->icc_index[0][bin] = 0;
}
if (ps->enable_ipdopd)
{
for (bin = 0; bin < 17; bin++)
{
ps->ipd_index[0][bin] = ps->ipd_index_prev[bin];
ps->opd_index[0][bin] = ps->opd_index_prev[bin];
}
} else {
for (bin = 0; bin < 17; bin++)
{
ps->ipd_index[0][bin] = 0;
ps->opd_index[0][bin] = 0;
}
}
}
/* update previous indices */
for (bin = 0; bin < 34; bin++)
ps->iid_index_prev[bin] = ps->iid_index[ps->num_env-1][bin];
for (bin = 0; bin < 34; bin++)
ps->icc_index_prev[bin] = ps->icc_index[ps->num_env-1][bin];
for (bin = 0; bin < 17; bin++)
{
ps->ipd_index_prev[bin] = ps->ipd_index[ps->num_env-1][bin];
ps->opd_index_prev[bin] = ps->opd_index[ps->num_env-1][bin];
}
ps->ps_data_available = 0;
if (ps->frame_class == 0)
{
ps->border_position[0] = 0;
for (env = 1; env < ps->num_env; env++)
{
ps->border_position[env] = (env * 32 /* 30 for 960? */) / ps->num_env;
}
ps->border_position[ps->num_env] = 32 /* 30 for 960? */;
} else {
ps->border_position[0] = 0;
if (ps->border_position[ps->num_env] < 32 /* 30 for 960? */)
{
ps->num_env++;
ps->border_position[ps->num_env] = 32 /* 30 for 960? */;
for (bin = 0; bin < 34; bin++)
{
ps->iid_index[ps->num_env][bin] = ps->iid_index[ps->num_env-1][bin];
ps->icc_index[ps->num_env][bin] = ps->icc_index[ps->num_env-1][bin];
}
for (bin = 0; bin < 17; bin++)
{
ps->ipd_index[ps->num_env][bin] = ps->ipd_index[ps->num_env-1][bin];
ps->opd_index[ps->num_env][bin] = ps->opd_index[ps->num_env-1][bin];
}
}
for (env = 1; env < ps->num_env; env++)
{
int8_t thr = 32 /* 30 for 960? */ - (ps->num_env - env);
if (ps->border_position[env] > thr)
{
ps->border_position[env] = thr;
} else {
thr = ps->border_position[env-1]+1;
if (ps->border_position[env] < thr)
{
ps->border_position[env] = thr;
}
}
}
}
/* make sure that the indices of all parameters can be mapped
* to the same hybrid synthesis filterbank
*/
#ifdef PS_LOW_POWER
for (env = 0; env < ps->num_env; env++)
{
if (ps->iid_mode == 2 || ps->iid_mode == 5)
map34indexto20(ps->iid_index[env], 34);
if (ps->icc_mode == 2 || ps->icc_mode == 5)
map34indexto20(ps->icc_index[env], 34);
/* disable ipd/opd */
for (bin = 0; bin < 17; bin++)
{
ps->aaIpdIndex[env][bin] = 0;
ps->aaOpdIndex[env][bin] = 0;
}
}
#else
if (ps->use34hybrid_bands)
{
for (env = 0; env < ps->num_env; env++)
{
if (ps->iid_mode != 2 && ps->iid_mode != 5)
map20indexto34(ps->iid_index[env], 34);
if (ps->icc_mode != 2 && ps->icc_mode != 5)
map20indexto34(ps->icc_index[env], 34);
if (ps->ipd_mode != 2 && ps->ipd_mode != 5)
{
map20indexto34(ps->ipd_index[env], 17);
map20indexto34(ps->opd_index[env], 17);
}
}
}
#endif
#if 0
for (env = 0; env < ps->num_env; env++)
{
printf("iid[env:%d]:", env);
for (bin = 0; bin < 34; bin++)
{
printf(" %d", ps->iid_index[env][bin]);
}
printf("\n");
}
for (env = 0; env < ps->num_env; env++)
{
printf("icc[env:%d]:", env);
for (bin = 0; bin < 34; bin++)
{
printf(" %d", ps->icc_index[env][bin]);
}
printf("\n");
}
for (env = 0; env < ps->num_env; env++)
{
printf("ipd[env:%d]:", env);
for (bin = 0; bin < 17; bin++)
{
printf(" %d", ps->ipd_index[env][bin]);
}
printf("\n");
}
for (env = 0; env < ps->num_env; env++)
{
printf("opd[env:%d]:", env);
for (bin = 0; bin < 17; bin++)
{
printf(" %d", ps->opd_index[env][bin]);
}
printf("\n");
}
printf("\n");
#endif
}
/* decorrelate the mono signal using an allpass filter */
static void ps_decorrelate(ps_info *ps, qmf_t X_left[38][64], qmf_t X_right[38][64],
qmf_t X_hybrid_left[32][32], qmf_t X_hybrid_right[32][32])
{
uint8_t gr, m, n, bk;
uint8_t temp_delay;
uint8_t sb, maxsb;
const complex_t *Phi_Fract_SubQmf;
uint8_t temp_delay_ser[NO_ALLPASS_LINKS];
real_t P_SmoothPeakDecayDiffNrg, nrg;
real_t P[32][34];
real_t G_TransientRatio[32][34];
complex_t inputLeft;
/* chose hybrid filterbank: 20 or 34 band case */
if (ps->use34hybrid_bands)
{
Phi_Fract_SubQmf = Phi_Fract_SubQmf34;
} else{
Phi_Fract_SubQmf = Phi_Fract_SubQmf20;
}
for (n = 0; n < 32; n++)
{
for (bk = 0; bk < 34; bk++)
{
P[n][bk] = 0;
}
}
for (gr = 0; gr < ps->num_groups; gr++)
{
bk = (~NEGATE_IPD_MASK) & ps->map_bins2group[gr];
maxsb = (gr < ps->num_hybrid_groups) ? ps->group_border[gr]+1 : ps->group_border[gr+1];
for (sb = ps->group_border[gr]; sb < maxsb; sb++)
{
for (n = ps->border_position[0] ; n < ps->border_position[ps->num_env] ; n++)
{
if (gr < ps->num_hybrid_groups)
{
RE(inputLeft) = QMF_RE(X_hybrid_left[n][sb]);
IM(inputLeft) = QMF_IM(X_hybrid_left[n][sb]);
} else {
RE(inputLeft) = QMF_RE(X_left[n][sb]);
IM(inputLeft) = QMF_IM(X_left[n][sb]);
}
P[n][bk] += MUL_R(RE(inputLeft),RE(inputLeft)) + MUL_R(IM(inputLeft),IM(inputLeft));
}
}
}
for (bk = 0; bk < ps->nr_par_bands; bk++)
{
for (n = ps->border_position[0]; n < ps->border_position[ps->num_env]; n++)
{
const real_t gamma = COEF_CONST(1.5);
ps->P_PeakDecayNrg[bk] = MUL_F(ps->P_PeakDecayNrg[bk], ps->alpha_decay);
if (ps->P_PeakDecayNrg[bk] < P[n][bk])
ps->P_PeakDecayNrg[bk] = P[n][bk];
P_SmoothPeakDecayDiffNrg = ps->P_SmoothPeakDecayDiffNrg_prev[bk];
P_SmoothPeakDecayDiffNrg += MUL_F((ps->P_PeakDecayNrg[bk] - P[n][bk] - ps->P_SmoothPeakDecayDiffNrg_prev[bk]), ps->alpha_smooth);
ps->P_SmoothPeakDecayDiffNrg_prev[bk] = P_SmoothPeakDecayDiffNrg;
nrg = ps->P_prev[bk];
nrg += MUL_F((P[n][bk] - ps->P_prev[bk]), ps->alpha_smooth);
ps->P_prev[bk] = nrg;
if (MUL_C(P_SmoothPeakDecayDiffNrg, gamma) <= nrg)
{
G_TransientRatio[n][bk] = REAL_CONST(1.0);
} else {
G_TransientRatio[n][bk] = SBR_DIV(nrg, (MUL_C(P_SmoothPeakDecayDiffNrg, gamma)));
}
}
}
for (gr = 0; gr < ps->num_groups; gr++)
{
if (gr < ps->num_hybrid_groups)
maxsb = ps->group_border[gr] + 1;
else
maxsb = ps->group_border[gr + 1];
/* QMF channel */
for (sb = ps->group_border[gr]; sb < maxsb; sb++)
{
real_t g_DecaySlope;
/* g_DecaySlope: [0..1] */
if (gr < ps->num_hybrid_groups || sb <= ps->decay_cutoff)
{
g_DecaySlope = FRAC_CONST(1.0);
} else {
int8_t decay = ps->decay_cutoff - sb;
if (decay <= -20 /* -1/DECAY_SLOPE */)
{
g_DecaySlope = 0;
} else {
/* decay(int)*decay_slope(frac) = g_DecaySlope(frac) */
g_DecaySlope = FRAC_CONST(1.0) + DECAY_SLOPE * decay;
}
}
/* set delay indices */
temp_delay = ps->saved_delay;
for (n = 0; n < NO_ALLPASS_LINKS; n++)
temp_delay_ser[n] = ps->delay_buf_index_ser[n];
for (n = ps->border_position[0]; n < ps->border_position[ps->num_env]; n++)
{
complex_t tmp, tmp0, R0;
if (gr < ps->num_hybrid_groups)
{
RE(inputLeft) = QMF_RE(X_hybrid_left[n][sb]);
IM(inputLeft) = QMF_IM(X_hybrid_left[n][sb]);
} else {
RE(inputLeft) = QMF_RE(X_left[n][sb]);
IM(inputLeft) = QMF_IM(X_left[n][sb]);
}
if (sb > ps->nr_allpass_bands && gr >= ps->num_hybrid_groups)
{
/* delay */
/* never SubQMF here */
RE(tmp) = RE(ps->delay_Qmf[ps->delay_buf_index_delay[sb]][sb]);
IM(tmp) = IM(ps->delay_Qmf[ps->delay_buf_index_delay[sb]][sb]);
RE(R0) = RE(tmp);
IM(R0) = IM(tmp);
RE(ps->delay_Qmf[ps->delay_buf_index_delay[sb]][sb]) = RE(inputLeft);
IM(ps->delay_Qmf[ps->delay_buf_index_delay[sb]][sb]) = IM(inputLeft);
} else {
/* allpass filter */
uint8_t m;
complex_t Phi_Fract;
/* fetch parameters */
if (gr < ps->num_hybrid_groups)
{
RE(tmp0) = RE(ps->delay_SubQmf[temp_delay][sb]);
IM(tmp0) = IM(ps->delay_SubQmf[temp_delay][sb]);
RE(ps->delay_SubQmf[temp_delay][sb]) = RE(inputLeft);
IM(ps->delay_SubQmf[temp_delay][sb]) = IM(inputLeft);
RE(Phi_Fract) = RE(Phi_Fract_SubQmf[sb]);
IM(Phi_Fract) = IM(Phi_Fract_SubQmf[sb]);
} else {
RE(tmp0) = RE(ps->delay_Qmf[temp_delay][sb]);
IM(tmp0) = IM(ps->delay_Qmf[temp_delay][sb]);
RE(ps->delay_Qmf[temp_delay][sb]) = RE(inputLeft);
IM(ps->delay_Qmf[temp_delay][sb]) = IM(inputLeft);
RE(Phi_Fract) = RE(Phi_Fract_Qmf[sb]);
IM(Phi_Fract) = IM(Phi_Fract_Qmf[sb]);
}
/* delay by fraction */
ComplexMult(&RE(tmp), &IM(tmp), RE(tmp0), IM(tmp0), RE(Phi_Fract), IM(Phi_Fract));
RE(R0) = RE(tmp);
IM(R0) = IM(tmp);
for (m = 0; m < NO_ALLPASS_LINKS ; m++)
{
complex_t Q_Fract_allpass, tmp2;
/* fetch parameters */
if (gr < ps->num_hybrid_groups)
{
RE(tmp0) = RE(ps->delay_SubQmf_ser[m][temp_delay_ser[m]][sb]);
IM(tmp0) = IM(ps->delay_SubQmf_ser[m][temp_delay_ser[m]][sb]);
if (ps->use34hybrid_bands)
{
RE(Q_Fract_allpass) = RE(Q_Fract_allpass_SubQmf34[sb][m]);
IM(Q_Fract_allpass) = IM(Q_Fract_allpass_SubQmf34[sb][m]);
} else {
RE(Q_Fract_allpass) = RE(Q_Fract_allpass_SubQmf20[sb][m]);
IM(Q_Fract_allpass) = IM(Q_Fract_allpass_SubQmf20[sb][m]);
}
} else {
RE(tmp0) = RE(ps->delay_Qmf_ser[m][temp_delay_ser[m]][sb]);
IM(tmp0) = IM(ps->delay_Qmf_ser[m][temp_delay_ser[m]][sb]);
RE(Q_Fract_allpass) = RE(Q_Fract_allpass_Qmf[sb][m]);
IM(Q_Fract_allpass) = IM(Q_Fract_allpass_Qmf[sb][m]);
}
ComplexMult(&RE(tmp), &IM(tmp), RE(tmp0), IM(tmp0), RE(Q_Fract_allpass), IM(Q_Fract_allpass));
RE(tmp) += -MUL_F(g_DecaySlope, MUL_F(filter_a[m], RE(R0)));
IM(tmp) += -MUL_F(g_DecaySlope, MUL_F(filter_a[m], IM(R0)));
RE(tmp2) = RE(R0) + MUL_F(g_DecaySlope, MUL_F(filter_a[m], RE(tmp)));
IM(tmp2) = IM(R0) + MUL_F(g_DecaySlope, MUL_F(filter_a[m], IM(tmp)));
if (gr < ps->num_hybrid_groups)
{
RE(ps->delay_SubQmf_ser[m][temp_delay_ser[m]][sb]) = RE(tmp2);
IM(ps->delay_SubQmf_ser[m][temp_delay_ser[m]][sb]) = IM(tmp2);
} else {
RE(ps->delay_Qmf_ser[m][temp_delay_ser[m]][sb]) = RE(tmp2);
IM(ps->delay_Qmf_ser[m][temp_delay_ser[m]][sb]) = IM(tmp2);
}
RE(R0) = RE(tmp);
IM(R0) = IM(tmp);
}
}
bk = (~NEGATE_IPD_MASK) & ps->map_bins2group[gr];
/* duck if a past transient is found */
if (gr < ps->num_hybrid_groups)
{
QMF_RE(X_hybrid_right[n][sb]) = MUL_R(G_TransientRatio[n][bk], RE(R0));
QMF_IM(X_hybrid_right[n][sb]) = MUL_R(G_TransientRatio[n][bk], IM(R0));
} else {
QMF_RE(X_right[n][sb]) = MUL_R(G_TransientRatio[n][bk], RE(R0));
QMF_IM(X_right[n][sb]) = MUL_R(G_TransientRatio[n][bk], IM(R0));
}
/* Update delay buffer index */
if (++temp_delay >= 2)
temp_delay = 0;
if (sb > ps->nr_allpass_bands && gr >= ps->num_hybrid_groups)
{
if (++ps->delay_buf_index_delay[sb] >= ps->delay_D[sb])
{
ps->delay_buf_index_delay[sb] = 0;
}
}
for (m = 0; m < NO_ALLPASS_LINKS; m++)
{
if (++temp_delay_ser[m] >= ps->num_sample_delay_ser[m])
temp_delay_ser[m] = 0;
}
}
}
}
ps->saved_delay = temp_delay;
for (m = 0; m < NO_ALLPASS_LINKS; m++)
ps->delay_buf_index_ser[m] = temp_delay_ser[m];
}
static void ps_mix_phase(ps_info *ps, qmf_t X_left[38][64], qmf_t X_right[38][64],
qmf_t X_hybrid_left[32][32], qmf_t X_hybrid_right[32][32])
{
uint8_t i;
uint8_t gr;
uint8_t bk = 0;
uint8_t sb, maxsb;
uint8_t env;
uint8_t nr_ipdopd_par;
real_t scaleL, scaleR;
complex_t h11, h12, h21, h22;
complex_t H11, H12, H21, H22;
complex_t deltaH11, deltaH12, deltaH21, deltaH22;
complex_t tempLeft;
complex_t tempRight;
real_t L;
const real_t *sf_iid;
const uint8_t *quant_iid;
uint8_t no_iid_steps;
if (ps->iid_mode >= 3)
{
no_iid_steps = 15;
sf_iid = sf_iid_fine;
quant_iid = quant_iid_fine;
} else {
no_iid_steps = 7;
sf_iid = sf_iid_normal;
quant_iid = quant_iid_normal;
}
if (ps->ipd_mode == 0 || ps->ipd_mode == 3)
{
nr_ipdopd_par = 11; /* resolution */
} else {
nr_ipdopd_par = ps->nr_ipdopd_par;
}
for (gr = 0; gr < ps->num_groups; gr++)
{
bk = (~NEGATE_IPD_MASK) & ps->map_bins2group[gr];
/* use one channel per group in the subqmf domain */
maxsb = (gr < ps->num_hybrid_groups) ? ps->group_border[gr] + 1 : ps->group_border[gr + 1];
for (env = 0; env < ps->num_env; env++)
{
if (ps->icc_mode < 3)
{
/* type 'A' mixing */
real_t cosa, sina;
real_t cosb, sinb;
real_t ab1, ab2;
real_t ab3, ab4;
scaleR = sf_iid[no_iid_steps + ps->iid_index[env][bk]];
scaleL = sf_iid[no_iid_steps - ps->iid_index[env][bk]];
cosa = cos_alphas[ps->icc_index[env][bk]];
sina = sin_alphas[ps->icc_index[env][bk]];
if (ps->iid_mode >= 3)
{
if (ps->iid_index[env][bk] < 0)
{
cosb = cos_betas_fine[-ps->iid_index[env][bk]][ps->icc_index[env][bk]];
sinb = -sin_betas_fine[-ps->iid_index[env][bk]][ps->icc_index[env][bk]];
} else {
cosb = cos_betas_fine[ps->iid_index[env][bk]][ps->icc_index[env][bk]];
sinb = sin_betas_fine[ps->iid_index[env][bk]][ps->icc_index[env][bk]];
}
} else {
if (ps->iid_index[env][bk] < 0)
{
cosb = cos_betas_normal[-ps->iid_index[env][bk]][ps->icc_index[env][bk]];
sinb = -sin_betas_normal[-ps->iid_index[env][bk]][ps->icc_index[env][bk]];
} else {
cosb = cos_betas_normal[ps->iid_index[env][bk]][ps->icc_index[env][bk]];
sinb = sin_betas_normal[ps->iid_index[env][bk]][ps->icc_index[env][bk]];
}
}
ab1 = MUL_C(cosb, cosa);
ab2 = MUL_C(sinb, sina);
ab3 = MUL_C(sinb, cosa);
ab4 = MUL_C(cosb, sina);
/* hxx: COEF */
RE(h11) = MUL_C(scaleL, (ab1 - ab2));
RE(h12) = MUL_C(scaleR, (ab1 + ab2));
RE(h21) = MUL_C(scaleL, (ab3 + ab4));
RE(h22) = MUL_C(scaleR, (ab3 - ab4));
//printf("%d %f %f %f %f\n", ps->iid_index[env][bin], scaleR, scaleL, alpha, beta);
} else {
/* type 'B' mixing */
float c, rho, mu, alpha, gamma;
uint8_t i;
i = ps->iid_index[env][bk];
c = (float)pow(10.0, ((i)?(((i>0)?1:-1)*quant_iid[((i>0)?i:-i)-1]):0.)/20.0);
rho = quant_rho[ps->icc_index[env][bk]];
rho = max(rho, 0.05f);
if (rho == 0.0f && c == 1.)
{
alpha = (float)M_PI/4.0f;
} else {
if (rho <= 0.0f)
{
rho = 0.05f;
}
alpha = 0.5f*(float)atan( (2.0f*c*rho) / (c*c-1.0f) );
if (alpha < 0.)
{
alpha += (float)M_PI/2.0f;
}
if (rho < 0.)
{
/* alpha = -alpha; */
alpha += (float)M_PI;
}
}
mu = c+1.0f/c;
mu = 1+(4.0f*rho*rho-4.0f)/(mu*mu);
gamma = (float)atan(sqrt((1.0f-sqrt(mu))/(1.0f+sqrt(mu))));
RE(h11) = ( float )(CSQRT2 * cos(alpha) * cos(gamma));
RE(h12) = ( float )(CSQRT2 * sin(alpha) * cos(gamma));
RE(h21) = ( float )(CSQRT2 * -cos(alpha) * sin(gamma));
RE(h22) = ( float )(CSQRT2 * sin(alpha) * sin(gamma));
}
if ((ps->enable_ipdopd) && (bk < nr_ipdopd_par))
{
real_t ipd, opd;
ipd = (float)( M_PI/8.0 * 2.0f ) * ps->ipd_index[env][bk];
opd = (float)( M_PI/8.0 * 2.0f ) * ps->opd_index[env][bk];
i = ps->phase_hist;
RE(tempLeft) = 0.25f * RE(ps->ipd_prev[bk][i]);
IM(tempLeft) = 0.25f * IM(ps->ipd_prev[bk][i]);
RE(tempRight) = 0.25f * RE(ps->opd_prev[bk][i]);
IM(tempRight) = 0.25f * IM(ps->opd_prev[bk][i]);
RE(ps->ipd_prev[bk][i]) = (float)cos(ipd);
IM(ps->ipd_prev[bk][i]) = (float)sin(ipd);
RE(ps->opd_prev[bk][i]) = (float)cos(opd);
IM(ps->opd_prev[bk][i]) = (float)sin(opd);
RE(tempLeft) += RE(ps->ipd_prev[bk][i]);
IM(tempLeft) += IM(ps->ipd_prev[bk][i]);
RE(tempRight) += RE(ps->opd_prev[bk][i]);
IM(tempRight) += IM(ps->opd_prev[bk][i]);
if (i == 0)
{
i = 2;
}
i--;
RE(tempLeft) += 0.5f * RE(ps->ipd_prev[bk][i]);
IM(tempLeft) += 0.5f * IM(ps->ipd_prev[bk][i]);
RE(tempRight) += 0.5f * RE(ps->opd_prev[bk][i]);
IM(tempRight) += 0.5f * IM(ps->opd_prev[bk][i]);
ipd = (float)atan2(IM(tempLeft), RE(tempLeft));
opd = (float)atan2(IM(tempRight), RE(tempRight));
/* phase rotation */
RE(tempLeft) = (float)cos(opd);
IM(tempLeft) = (float)sin(opd);
opd -= ipd;
RE(tempRight) = (float)cos(opd);
IM(tempRight) = (float)sin(opd);
IM(h11) = RE(h11) * IM(tempLeft);
IM(h12) = RE(h12) * IM(tempRight);
IM(h21) = RE(h21) * IM(tempLeft);
IM(h22) = RE(h22) * IM(tempRight);
RE(h11) *= RE(tempLeft);
RE(h12) *= RE(tempRight);
RE(h21) *= RE(tempLeft);
RE(h22) *= RE(tempRight);
}
/* length of the envelope (in time samples) */
L = (real_t)(ps->border_position[env + 1] - ps->border_position[env]);
RE(deltaH11) = (RE(h11) - RE(ps->h11_prev[gr])) / L;
RE(deltaH12) = (RE(h12) - RE(ps->h12_prev[gr])) / L;
RE(deltaH21) = (RE(h21) - RE(ps->h21_prev[gr])) / L;
RE(deltaH22) = (RE(h22) - RE(ps->h22_prev[gr])) / L;
RE(H11) = RE(ps->h11_prev[gr]);
RE(H12) = RE(ps->h12_prev[gr]);
RE(H21) = RE(ps->h21_prev[gr]);
RE(H22) = RE(ps->h22_prev[gr]);
RE(ps->h11_prev[gr]) = RE(h11);
RE(ps->h12_prev[gr]) = RE(h12);
RE(ps->h21_prev[gr]) = RE(h21);
RE(ps->h22_prev[gr]) = RE(h22);
if ((ps->enable_ipdopd) && (bk < nr_ipdopd_par))
{
IM(deltaH11) = (IM(h11) - IM(ps->h11_prev[gr])) / L;
IM(deltaH12) = (IM(h12) - IM(ps->h12_prev[gr])) / L;
IM(deltaH21) = (IM(h21) - IM(ps->h21_prev[gr])) / L;
IM(deltaH22) = (IM(h22) - IM(ps->h22_prev[gr])) / L;
IM(H11) = IM(ps->h11_prev[gr]);
IM(H12) = IM(ps->h12_prev[gr]);
IM(H21) = IM(ps->h21_prev[gr]);
IM(H22) = IM(ps->h22_prev[gr]);
if ((NEGATE_IPD_MASK & ps->map_bins2group[gr]) != 0)
{
IM(deltaH11) = -IM(deltaH11);
IM(deltaH12) = -IM(deltaH12);
IM(deltaH21) = -IM(deltaH21);
IM(deltaH22) = -IM(deltaH22);
IM(H11) = -IM(H11);
IM(H12) = -IM(H12);
IM(H21) = -IM(H21);
IM(H22) = -IM(H22);
}
IM(ps->h11_prev[gr]) = IM(h11);
IM(ps->h12_prev[gr]) = IM(h12);
IM(ps->h21_prev[gr]) = IM(h21);
IM(ps->h22_prev[gr]) = IM(h22);
}
for (i = ps->border_position[env]; i < ps->border_position[env + 1]; i++)
{
RE(H11) += RE(deltaH11);
RE(H12) += RE(deltaH12);
RE(H21) += RE(deltaH21);
RE(H22) += RE(deltaH22);
if ((ps->enable_ipdopd) && (bk < nr_ipdopd_par))
{
IM(H11) += IM(deltaH11);
IM(H12) += IM(deltaH12);
IM(H21) += IM(deltaH21);
IM(H22) += IM(deltaH22);
}
/* channel is an alias to the subband */
for (sb = ps->group_border[gr]; sb < maxsb; sb++)
{
complex_t inLeft, inRight;
if (gr < ps->num_hybrid_groups)
{
RE(inLeft) = RE(X_hybrid_left[i][sb]);
IM(inLeft) = IM(X_hybrid_left[i][sb]);
RE(inRight) = RE(X_hybrid_right[i][sb]);
IM(inRight) = IM(X_hybrid_right[i][sb]);
} else {
RE(inLeft) = RE(X_left[i][sb]);
IM(inLeft) = IM(X_left[i][sb]);
RE(inRight) = RE(X_right[i][sb]);
IM(inRight) = IM(X_right[i][sb]);
}
RE(tempLeft) = RE(H11) * RE(inLeft) + RE(H21) * RE(inRight);
IM(tempLeft) = RE(H11) * IM(inLeft) + RE(H21) * IM(inRight);
RE(tempRight) = RE(H12) * RE(inLeft) + RE(H22) * RE(inRight);
IM(tempRight) = RE(H12) * IM(inLeft) + RE(H22) * IM(inRight);
if ((ps->enable_ipdopd) && (bk < nr_ipdopd_par))
{
RE(tempLeft) -= IM(H11) * IM(inLeft) + IM(H21) * IM(inRight);
IM(tempLeft) += IM(H11) * RE(inLeft) + IM(H21) * RE(inRight);
RE(tempRight) -= IM(H12) * IM(inLeft) + IM(H22) * IM(inRight);
IM(tempRight) += IM(H12) * RE(inLeft) + IM(H22) * RE(inRight);
}
if (gr < ps->num_hybrid_groups)
{
RE(X_hybrid_left[i][sb]) = RE(tempLeft);
IM(X_hybrid_left[i][sb]) = IM(tempLeft);
RE(X_hybrid_right[i][sb]) = RE(tempRight);
IM(X_hybrid_right[i][sb]) = IM(tempRight);
} else {
RE(X_left[i][sb]) = RE(tempLeft);
IM(X_left[i][sb]) = IM(tempLeft);
RE(X_right[i][sb]) = RE(tempRight);
IM(X_right[i][sb]) = IM(tempRight);
}
}
}
/* shift phase smoother's circular buffer index */
ps->phase_hist++;
if (ps->phase_hist == 2)
{
ps->phase_hist = 0;
}
}
}
}
ps_info *ps_init(uint8_t sr_index)
{
uint8_t i;
uint8_t short_delay_band;
ps_info *ps = (ps_info*)faad_malloc(sizeof(ps_info));
memset(ps, 0, sizeof(ps_info));
ps->hyb = hybrid_init();
ps->ps_data_available = 0;
/* delay stuff*/
ps->saved_delay = 0;
for (i = 0; i < 64; i++)
{
ps->delay_buf_index_delay[i] = 0;
}
for (i = 0; i < NO_ALLPASS_LINKS; i++)
{
ps->delay_buf_index_ser[i] = 0;
if (sr_index <= 5) /* >= 32 kHz*/
{
ps->num_sample_delay_ser[i] = delay_length_d[1][i];
} else {
ps->num_sample_delay_ser[i] = delay_length_d[0][i];
}
}
if (sr_index <= 5) /* >= 32 kHz*/
{
short_delay_band = 35;
ps->nr_allpass_bands = 22;
ps->alpha_decay = FRAC_CONST(0.76592833836465);
ps->alpha_smooth = FRAC_CONST(0.25);
} else {
short_delay_band = 64;
ps->nr_allpass_bands = 45;
ps->alpha_decay = FRAC_CONST(0.58664621951003);
ps->alpha_smooth = FRAC_CONST(0.6);
}
for (i = 0; i < short_delay_band; i++)
{
ps->delay_D[i] = 14;
}
for (i = short_delay_band; i < 64; i++)
{
ps->delay_D[i] = 1;
}
/* mixing and phase */
for (i = 0; i < 50; i++)
{
RE(ps->h11_prev[i]) = 1;
IM(ps->h12_prev[i]) = 1;
RE(ps->h11_prev[i]) = 1;
IM(ps->h12_prev[i]) = 1;
}
ps->phase_hist = 0;
for (i = 0; i < 20; i++)
{
RE(ps->ipd_prev[i][0]) = 0;
IM(ps->ipd_prev[i][0]) = 0;
RE(ps->ipd_prev[i][1]) = 0;
IM(ps->ipd_prev[i][1]) = 0;
RE(ps->opd_prev[i][0]) = 0;
IM(ps->opd_prev[i][0]) = 0;
RE(ps->opd_prev[i][1]) = 0;
IM(ps->opd_prev[i][1]) = 0;
}
return ps;
}
/* main Parametric Stereo decoding function */
uint8_t ps_decode(ps_info *ps, qmf_t X_left[38][64], qmf_t X_right[38][64])
{
qmf_t X_hybrid_left[32][32] = {{0}};
qmf_t X_hybrid_right[32][32] = {{0}};
/* delta decoding of the bitstream data */
ps_data_decode(ps);
/* set up some parameters depending on filterbank type */
if (ps->use34hybrid_bands)
{
ps->group_border = (uint8_t*)group_border34;
ps->map_bins2group = (uint16_t*)map_bins2group34;
ps->num_groups = 32+18;
ps->num_hybrid_groups = 32;
ps->nr_par_bands = 34;
ps->decay_cutoff = 5;
} else {
ps->group_border = (uint8_t*)group_border20;
ps->map_bins2group = (uint16_t*)map_bins2group20;
ps->num_groups = 10+12;
ps->num_hybrid_groups = 10;
ps->nr_par_bands = 20;
ps->decay_cutoff = 3;
}
/* Perform further analysis on the lowest subbands to get a higher
* frequency resolution
*/
hybrid_analysis((hyb_info*)ps->hyb, X_left, X_hybrid_left,
ps->use34hybrid_bands);
/* decorrelate mono signal */
ps_decorrelate(ps, X_left, X_right, X_hybrid_left, X_hybrid_right);
/* apply mixing and phase parameters */
ps_mix_phase(ps, X_left, X_right, X_hybrid_left, X_hybrid_right);
/* hybrid synthesis, to rebuild the SBR QMF matrices */
hybrid_synthesis((hyb_info*)ps->hyb, X_left, X_hybrid_left,
ps->use34hybrid_bands);
hybrid_synthesis((hyb_info*)ps->hyb, X_right, X_hybrid_right,
ps->use34hybrid_bands);
return 0;
}
#endif