/*

 *      MP3 window subband -> subband filtering -> mdct routine

 *

 *      Copyright (c) 1999-2000 Takehiro Tominaga

 *

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library 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

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

/*

 *         Special Thanks to Patrick De Smet for your advices.

 */

/* $Id: newmdct.c,v 1.39 2011/05/07 16:05:17 rbrito Exp $ */

#ifdef HAVE_CONFIG_H

# include <config.h>

#endif

#include "lame.h"

#include "machine.h"

#include "encoder.h"

#include "util.h"

#include "newmdct.h"

#ifndef USE_GOGO_SUBBAND

static const FLOAT enwindow[] = {

    -4.77e-07 * 0.740951125354959 / 2.384e-06, 1.03951e-04 * 0.740951125354959 / 2.384e-06,

    9.53674e-04 * 0.740951125354959 / 2.384e-06, 2.841473e-03 * 0.740951125354959 / 2.384e-06,

    3.5758972e-02 * 0.740951125354959 / 2.384e-06, 3.401756e-03 * 0.740951125354959 / 2.384e-06, 9.83715e-04 * 0.740951125354959 / 2.384e-06, 9.9182e-05 * 0.740951125354959 / 2.384e-06, /* 15 */

    1.2398e-05 * 0.740951125354959 / 2.384e-06, 1.91212e-04 * 0.740951125354959 / 2.384e-06,

    2.283096e-03 * 0.740951125354959 / 2.384e-06, 1.6994476e-02 * 0.740951125354959 / 2.384e-06,

    -1.8756866e-02 * 0.740951125354959 / 2.384e-06, -2.630711e-03 * 0.740951125354959 / 2.384e-06,

    -2.47478e-04 * 0.740951125354959 / 2.384e-06, -1.4782e-05 * 0.740951125354959 / 2.384e-06,

    9.063471690191471e-01,

    1.960342806591213e-01,

    -4.77e-07 * 0.773010453362737 / 2.384e-06, 1.05858e-04 * 0.773010453362737 / 2.384e-06,

    9.30786e-04 * 0.773010453362737 / 2.384e-06, 2.521515e-03 * 0.773010453362737 / 2.384e-06,

    3.5694122e-02 * 0.773010453362737 / 2.384e-06, 3.643036e-03 * 0.773010453362737 / 2.384e-06, 9.91821e-04 * 0.773010453362737 / 2.384e-06, 9.6321e-05 * 0.773010453362737 / 2.384e-06, /* 14 */

    1.1444e-05 * 0.773010453362737 / 2.384e-06, 1.65462e-04 * 0.773010453362737 / 2.384e-06,

    2.110004e-03 * 0.773010453362737 / 2.384e-06, 1.6112804e-02 * 0.773010453362737 / 2.384e-06,

    -1.9634247e-02 * 0.773010453362737 / 2.384e-06, -2.803326e-03 * 0.773010453362737 / 2.384e-06,

    -2.77042e-04 * 0.773010453362737 / 2.384e-06, -1.6689e-05 * 0.773010453362737 / 2.384e-06,

    8.206787908286602e-01,

    3.901806440322567e-01,

    -4.77e-07 * 0.803207531480645 / 2.384e-06, 1.07288e-04 * 0.803207531480645 / 2.384e-06,

    9.02653e-04 * 0.803207531480645 / 2.384e-06, 2.174854e-03 * 0.803207531480645 / 2.384e-06,

    3.5586357e-02 * 0.803207531480645 / 2.384e-06, 3.858566e-03 * 0.803207531480645 / 2.384e-06, 9.95159e-04 * 0.803207531480645 / 2.384e-06, 9.3460e-05 * 0.803207531480645 / 2.384e-06, /* 13 */

    1.0014e-05 * 0.803207531480645 / 2.384e-06, 1.40190e-04 * 0.803207531480645 / 2.384e-06,

    1.937389e-03 * 0.803207531480645 / 2.384e-06, 1.5233517e-02 * 0.803207531480645 / 2.384e-06,

    -2.0506859e-02 * 0.803207531480645 / 2.384e-06, -2.974033e-03 * 0.803207531480645 / 2.384e-06,

    -3.07560e-04 * 0.803207531480645 / 2.384e-06, -1.8120e-05 * 0.803207531480645 / 2.384e-06,

    7.416505462720353e-01,

    5.805693545089249e-01,

    -4.77e-07 * 0.831469612302545 / 2.384e-06, 1.08242e-04 * 0.831469612302545 / 2.384e-06,

    8.68797e-04 * 0.831469612302545 / 2.384e-06, 1.800537e-03 * 0.831469612302545 / 2.384e-06,

    3.5435200e-02 * 0.831469612302545 / 2.384e-06, 4.049301e-03 * 0.831469612302545 / 2.384e-06, 9.94205e-04 * 0.831469612302545 / 2.384e-06, 9.0599e-05 * 0.831469612302545 / 2.384e-06, /* 12 */

    9.060e-06 * 0.831469612302545 / 2.384e-06, 1.16348e-04 * 0.831469612302545 / 2.384e-06,

    1.766682e-03 * 0.831469612302545 / 2.384e-06, 1.4358521e-02 * 0.831469612302545 / 2.384e-06,

    -2.1372318e-02 * 0.831469612302545 / 2.384e-06, -3.14188e-03 * 0.831469612302545 / 2.384e-06,

    -3.39031e-04 * 0.831469612302545 / 2.384e-06, -1.9550e-05 * 0.831469612302545 / 2.384e-06,

    6.681786379192989e-01,

    7.653668647301797e-01,

    -4.77e-07 * 0.857728610000272 / 2.384e-06, 1.08719e-04 * 0.857728610000272 / 2.384e-06,

    8.29220e-04 * 0.857728610000272 / 2.384e-06, 1.399517e-03 * 0.857728610000272 / 2.384e-06,

    3.5242081e-02 * 0.857728610000272 / 2.384e-06, 4.215240e-03 * 0.857728610000272 / 2.384e-06, 9.89437e-04 * 0.857728610000272 / 2.384e-06, 8.7261e-05 * 0.857728610000272 / 2.384e-06, /* 11 */

    8.106e-06 * 0.857728610000272 / 2.384e-06, 9.3937e-05 * 0.857728610000272 / 2.384e-06,

    1.597881e-03 * 0.857728610000272 / 2.384e-06, 1.3489246e-02 * 0.857728610000272 / 2.384e-06,

    -2.2228718e-02 * 0.857728610000272 / 2.384e-06, -3.306866e-03 * 0.857728610000272 / 2.384e-06,

    -3.71456e-04 * 0.857728610000272 / 2.384e-06, -2.1458e-05 * 0.857728610000272 / 2.384e-06,

    5.993769336819237e-01,

    9.427934736519954e-01,

    -4.77e-07 * 0.881921264348355 / 2.384e-06, 1.08719e-04 * 0.881921264348355 / 2.384e-06,

    7.8392e-04 * 0.881921264348355 / 2.384e-06, 9.71317e-04 * 0.881921264348355 / 2.384e-06,

    3.5007000e-02 * 0.881921264348355 / 2.384e-06, 4.357815e-03 * 0.881921264348355 / 2.384e-06, 9.80854e-04 * 0.881921264348355 / 2.384e-06, 8.3923e-05 * 0.881921264348355 / 2.384e-06, /* 10 */

    7.629e-06 * 0.881921264348355 / 2.384e-06, 7.2956e-05 * 0.881921264348355 / 2.384e-06,

    1.432419e-03 * 0.881921264348355 / 2.384e-06, 1.2627602e-02 * 0.881921264348355 / 2.384e-06,

    -2.3074150e-02 * 0.881921264348355 / 2.384e-06, -3.467083e-03 * 0.881921264348355 / 2.384e-06,

    -4.04358e-04 * 0.881921264348355 / 2.384e-06, -2.3365e-05 * 0.881921264348355 / 2.384e-06,

    5.345111359507916e-01,

    1.111140466039205e+00,

    -9.54e-07 * 0.903989293123443 / 2.384e-06, 1.08242e-04 * 0.903989293123443 / 2.384e-06,

    7.31945e-04 * 0.903989293123443 / 2.384e-06, 5.15938e-04 * 0.903989293123443 / 2.384e-06,

    3.4730434e-02 * 0.903989293123443 / 2.384e-06, 4.477024e-03 * 0.903989293123443 / 2.384e-06, 9.68933e-04 * 0.903989293123443 / 2.384e-06, 8.0585e-05 * 0.903989293123443 / 2.384e-06, /* 9 */

    6.676e-06 * 0.903989293123443 / 2.384e-06, 5.2929e-05 * 0.903989293123443 / 2.384e-06,

    1.269817e-03 * 0.903989293123443 / 2.384e-06, 1.1775017e-02 * 0.903989293123443 / 2.384e-06,

    -2.3907185e-02 * 0.903989293123443 / 2.384e-06, -3.622532e-03 * 0.903989293123443 / 2.384e-06,

    -4.38213e-04 * 0.903989293123443 / 2.384e-06, -2.5272e-05 * 0.903989293123443 / 2.384e-06,

    4.729647758913199e-01,

    1.268786568327291e+00,

    -9.54e-07 * 0.92387953251128675613 / 2.384e-06,

    1.06812e-04 * 0.92387953251128675613 / 2.384e-06,

    6.74248e-04 * 0.92387953251128675613 / 2.384e-06,

    3.3379e-05 * 0.92387953251128675613 / 2.384e-06,

    3.4412861e-02 * 0.92387953251128675613 / 2.384e-06,

    4.573822e-03 * 0.92387953251128675613 / 2.384e-06,

    9.54151e-04 * 0.92387953251128675613 / 2.384e-06,

    7.6771e-05 * 0.92387953251128675613 / 2.384e-06,

    6.199e-06 * 0.92387953251128675613 / 2.384e-06, 3.4332e-05 * 0.92387953251128675613 / 2.384e-06,

    1.111031e-03 * 0.92387953251128675613 / 2.384e-06,

    1.0933399e-02 * 0.92387953251128675613 / 2.384e-06,

    -2.4725437e-02 * 0.92387953251128675613 / 2.384e-06,

    -3.771782e-03 * 0.92387953251128675613 / 2.384e-06,

    -4.72546e-04 * 0.92387953251128675613 / 2.384e-06,

    -2.7657e-05 * 0.92387953251128675613 / 2.384e-06,

    4.1421356237309504879e-01, /* tan(PI/8) */

    1.414213562373095e+00,

    -9.54e-07 * 0.941544065183021 / 2.384e-06, 1.05381e-04 * 0.941544065183021 / 2.384e-06,

    6.10352e-04 * 0.941544065183021 / 2.384e-06, -4.75883e-04 * 0.941544065183021 / 2.384e-06,

    3.4055710e-02 * 0.941544065183021 / 2.384e-06, 4.649162e-03 * 0.941544065183021 / 2.384e-06, 9.35555e-04 * 0.941544065183021 / 2.384e-06, 7.3433e-05 * 0.941544065183021 / 2.384e-06, /* 7 */

    5.245e-06 * 0.941544065183021 / 2.384e-06, 1.7166e-05 * 0.941544065183021 / 2.384e-06,

    9.56535e-04 * 0.941544065183021 / 2.384e-06, 1.0103703e-02 * 0.941544065183021 / 2.384e-06,

    -2.5527000e-02 * 0.941544065183021 / 2.384e-06, -3.914356e-03 * 0.941544065183021 / 2.384e-06,

    -5.07355e-04 * 0.941544065183021 / 2.384e-06, -3.0041e-05 * 0.941544065183021 / 2.384e-06,

    3.578057213145241e-01,

    1.546020906725474e+00,

    -9.54e-07 * 0.956940335732209 / 2.384e-06, 1.02520e-04 * 0.956940335732209 / 2.384e-06,

    5.39303e-04 * 0.956940335732209 / 2.384e-06, -1.011848e-03 * 0.956940335732209 / 2.384e-06,

    3.3659935e-02 * 0.956940335732209 / 2.384e-06, 4.703045e-03 * 0.956940335732209 / 2.384e-06, 9.15051e-04 * 0.956940335732209 / 2.384e-06, 7.0095e-05 * 0.956940335732209 / 2.384e-06, /* 6 */

    4.768e-06 * 0.956940335732209 / 2.384e-06, 9.54e-07 * 0.956940335732209 / 2.384e-06,

    8.06808e-04 * 0.956940335732209 / 2.384e-06, 9.287834e-03 * 0.956940335732209 / 2.384e-06,

    -2.6310921e-02 * 0.956940335732209 / 2.384e-06, -4.048824e-03 * 0.956940335732209 / 2.384e-06,

    -5.42164e-04 * 0.956940335732209 / 2.384e-06, -3.2425e-05 * 0.956940335732209 / 2.384e-06,

    3.033466836073424e-01,

    1.662939224605090e+00,

    -1.431e-06 * 0.970031253194544 / 2.384e-06, 9.9182e-05 * 0.970031253194544 / 2.384e-06,

    4.62532e-04 * 0.970031253194544 / 2.384e-06, -1.573563e-03 * 0.970031253194544 / 2.384e-06,

    3.3225536e-02 * 0.970031253194544 / 2.384e-06, 4.737377e-03 * 0.970031253194544 / 2.384e-06, 8.91685e-04 * 0.970031253194544 / 2.384e-06, 6.6280e-05 * 0.970031253194544 / 2.384e-06, /* 5 */

    4.292e-06 * 0.970031253194544 / 2.384e-06, -1.3828e-05 * 0.970031253194544 / 2.384e-06,

    6.61850e-04 * 0.970031253194544 / 2.384e-06, 8.487225e-03 * 0.970031253194544 / 2.384e-06,

    -2.7073860e-02 * 0.970031253194544 / 2.384e-06, -4.174709e-03 * 0.970031253194544 / 2.384e-06,

    -5.76973e-04 * 0.970031253194544 / 2.384e-06, -3.4809e-05 * 0.970031253194544 / 2.384e-06,

    2.504869601913055e-01,

    1.763842528696710e+00,

    -1.431e-06 * 0.98078528040323 / 2.384e-06, 9.5367e-05 * 0.98078528040323 / 2.384e-06,

    3.78609e-04 * 0.98078528040323 / 2.384e-06, -2.161503e-03 * 0.98078528040323 / 2.384e-06,

    3.2754898e-02 * 0.98078528040323 / 2.384e-06, 4.752159e-03 * 0.98078528040323 / 2.384e-06, 8.66413e-04 * 0.98078528040323 / 2.384e-06, 6.2943e-05 * 0.98078528040323 / 2.384e-06, /* 4 */

    3.815e-06 * 0.98078528040323 / 2.384e-06, -2.718e-05 * 0.98078528040323 / 2.384e-06,

    5.22137e-04 * 0.98078528040323 / 2.384e-06, 7.703304e-03 * 0.98078528040323 / 2.384e-06,

    -2.7815342e-02 * 0.98078528040323 / 2.384e-06, -4.290581e-03 * 0.98078528040323 / 2.384e-06,

    -6.11782e-04 * 0.98078528040323 / 2.384e-06, -3.7670e-05 * 0.98078528040323 / 2.384e-06,

    1.989123673796580e-01,

    1.847759065022573e+00,

    -1.907e-06 * 0.989176509964781 / 2.384e-06, 9.0122e-05 * 0.989176509964781 / 2.384e-06,

    2.88486e-04 * 0.989176509964781 / 2.384e-06, -2.774239e-03 * 0.989176509964781 / 2.384e-06,

    3.2248020e-02 * 0.989176509964781 / 2.384e-06, 4.748821e-03 * 0.989176509964781 / 2.384e-06, 8.38757e-04 * 0.989176509964781 / 2.384e-06, 5.9605e-05 * 0.989176509964781 / 2.384e-06, /* 3 */

    3.338e-06 * 0.989176509964781 / 2.384e-06, -3.9577e-05 * 0.989176509964781 / 2.384e-06,

    3.88145e-04 * 0.989176509964781 / 2.384e-06, 6.937027e-03 * 0.989176509964781 / 2.384e-06,

    -2.8532982e-02 * 0.989176509964781 / 2.384e-06, -4.395962e-03 * 0.989176509964781 / 2.384e-06,

    -6.46591e-04 * 0.989176509964781 / 2.384e-06, -4.0531e-05 * 0.989176509964781 / 2.384e-06,

    1.483359875383474e-01,

    1.913880671464418e+00,

    -1.907e-06 * 0.995184726672197 / 2.384e-06, 8.4400e-05 * 0.995184726672197 / 2.384e-06,

    1.91689e-04 * 0.995184726672197 / 2.384e-06, -3.411293e-03 * 0.995184726672197 / 2.384e-06,

    3.1706810e-02 * 0.995184726672197 / 2.384e-06, 4.728317e-03 * 0.995184726672197 / 2.384e-06,

    8.09669e-04 * 0.995184726672197 / 2.384e-06, 5.579e-05 * 0.995184726672197 / 2.384e-06,

    3.338e-06 * 0.995184726672197 / 2.384e-06, -5.0545e-05 * 0.995184726672197 / 2.384e-06,

    2.59876e-04 * 0.995184726672197 / 2.384e-06, 6.189346e-03 * 0.995184726672197 / 2.384e-06,

    -2.9224873e-02 * 0.995184726672197 / 2.384e-06, -4.489899e-03 * 0.995184726672197 / 2.384e-06,

    -6.80923e-04 * 0.995184726672197 / 2.384e-06, -4.3392e-05 * 0.995184726672197 / 2.384e-06,

    9.849140335716425e-02,

    1.961570560806461e+00,

    -2.384e-06 * 0.998795456205172 / 2.384e-06, 7.7724e-05 * 0.998795456205172 / 2.384e-06,

    8.8215e-05 * 0.998795456205172 / 2.384e-06, -4.072189e-03 * 0.998795456205172 / 2.384e-06,

    3.1132698e-02 * 0.998795456205172 / 2.384e-06, 4.691124e-03 * 0.998795456205172 / 2.384e-06,

    7.79152e-04 * 0.998795456205172 / 2.384e-06, 5.2929e-05 * 0.998795456205172 / 2.384e-06,

    2.861e-06 * 0.998795456205172 / 2.384e-06, -6.0558e-05 * 0.998795456205172 / 2.384e-06,

    1.37329e-04 * 0.998795456205172 / 2.384e-06, 5.462170e-03 * 0.998795456205172 / 2.384e-06,

    -2.9890060e-02 * 0.998795456205172 / 2.384e-06, -4.570484e-03 * 0.998795456205172 / 2.384e-06,

    -7.14302e-04 * 0.998795456205172 / 2.384e-06, -4.6253e-05 * 0.998795456205172 / 2.384e-06,

    4.912684976946725e-02,

    1.990369453344394e+00,

    3.5780907e-02 * SQRT2 * 0.5 / 2.384e-06, 1.7876148e-02 * SQRT2 * 0.5 / 2.384e-06,

    3.134727e-03 * SQRT2 * 0.5 / 2.384e-06, 2.457142e-03 * SQRT2 * 0.5 / 2.384e-06,

    9.71317e-04 * SQRT2 * 0.5 / 2.384e-06, 2.18868e-04 * SQRT2 * 0.5 / 2.384e-06,

    1.01566e-04 * SQRT2 * 0.5 / 2.384e-06, 1.3828e-05 * SQRT2 * 0.5 / 2.384e-06,

    3.0526638e-02 / 2.384e-06, 4.638195e-03 / 2.384e-06, 7.47204e-04 / 2.384e-06,

    4.9591e-05 / 2.384e-06,

    4.756451e-03 / 2.384e-06, 2.1458e-05 / 2.384e-06, -6.9618e-05 / 2.384e-06, /*    2.384e-06/2.384e-06 */

};

#endif

#define NS 12

#define NL 36

static const FLOAT win[4][NL] = {

    {

     2.382191739347913e-13,

     6.423305872147834e-13,

     9.400849094049688e-13,

     1.122435026096556e-12,

     1.183840321267481e-12,

     1.122435026096556e-12,

     9.400849094049690e-13,

     6.423305872147839e-13,

     2.382191739347918e-13,

     5.456116108943412e-12,

     4.878985199565852e-12,

     4.240448995017367e-12,

     3.559909094758252e-12,

     2.858043359288075e-12,

     2.156177623817898e-12,

     1.475637723558783e-12,

     8.371015190102974e-13,

     2.599706096327376e-13,

     -5.456116108943412e-12,

     -4.878985199565852e-12,

     -4.240448995017367e-12,

     -3.559909094758252e-12,

     -2.858043359288076e-12,

     -2.156177623817898e-12,

     -1.475637723558783e-12,

     -8.371015190102975e-13,

     -2.599706096327376e-13,

     -2.382191739347923e-13,

     -6.423305872147843e-13,

     -9.400849094049696e-13,

     -1.122435026096556e-12,

     -1.183840321267481e-12,

     -1.122435026096556e-12,

     -9.400849094049694e-13,

     -6.423305872147840e-13,

     -2.382191739347918e-13,

     },

    {

     2.382191739347913e-13,

     6.423305872147834e-13,

     9.400849094049688e-13,

     1.122435026096556e-12,

     1.183840321267481e-12,

     1.122435026096556e-12,

     9.400849094049688e-13,

     6.423305872147841e-13,

     2.382191739347918e-13,

     5.456116108943413e-12,

     4.878985199565852e-12,

     4.240448995017367e-12,

     3.559909094758253e-12,

     2.858043359288075e-12,

     2.156177623817898e-12,

     1.475637723558782e-12,

     8.371015190102975e-13,

     2.599706096327376e-13,

     -5.461314069809755e-12,

     -4.921085770524055e-12,

     -4.343405037091838e-12,

     -3.732668368707687e-12,

     -3.093523840190885e-12,

     -2.430835727329465e-12,

     -1.734679010007751e-12,

     -9.748253656609281e-13,

     -2.797435120168326e-13,

     0.000000000000000e+00,

     0.000000000000000e+00,

     0.000000000000000e+00,

     0.000000000000000e+00,

     0.000000000000000e+00,

     0.000000000000000e+00,

     -2.283748241799531e-13,

     -4.037858874020686e-13,

     -2.146547464825323e-13,

     },

    {

     1.316524975873958e-01, /* win[SHORT_TYPE] */

     4.142135623730950e-01,

     7.673269879789602e-01,

     1.091308501069271e+00, /* tantab_l */

     1.303225372841206e+00,

     1.569685577117490e+00,

     1.920982126971166e+00,

     2.414213562373094e+00,

     3.171594802363212e+00,

     4.510708503662055e+00,

     7.595754112725146e+00,

     2.290376554843115e+01,

     0.98480775301220802032, /* cx */

     0.64278760968653936292,

     0.34202014332566882393,

     0.93969262078590842791,

     -0.17364817766693030343,

     -0.76604444311897790243,

     0.86602540378443870761,

     0.500000000000000e+00,

     -5.144957554275265e-01, /* ca */

     -4.717319685649723e-01,

     -3.133774542039019e-01,

     -1.819131996109812e-01,

     -9.457419252642064e-02,

     -4.096558288530405e-02,

     -1.419856857247115e-02,

     -3.699974673760037e-03,

     8.574929257125442e-01, /* cs */

     8.817419973177052e-01,

     9.496286491027329e-01,

     9.833145924917901e-01,

     9.955178160675857e-01,

     9.991605581781475e-01,

     9.998991952444470e-01,

     9.999931550702802e-01,

     },

    {

     0.000000000000000e+00,

     0.000000000000000e+00,

     0.000000000000000e+00,

     0.000000000000000e+00,

     0.000000000000000e+00,

     0.000000000000000e+00,

     2.283748241799531e-13,

     4.037858874020686e-13,

     2.146547464825323e-13,

     5.461314069809755e-12,

     4.921085770524055e-12,

     4.343405037091838e-12,

     3.732668368707687e-12,

     3.093523840190885e-12,

     2.430835727329466e-12,

     1.734679010007751e-12,

     9.748253656609281e-13,

     2.797435120168326e-13,

     -5.456116108943413e-12,

     -4.878985199565852e-12,

     -4.240448995017367e-12,

     -3.559909094758253e-12,

     -2.858043359288075e-12,

     -2.156177623817898e-12,

     -1.475637723558782e-12,

     -8.371015190102975e-13,

     -2.599706096327376e-13,

     -2.382191739347913e-13,

     -6.423305872147834e-13,

     -9.400849094049688e-13,

     -1.122435026096556e-12,

     -1.183840321267481e-12,

     -1.122435026096556e-12,

     -9.400849094049688e-13,

     -6.423305872147841e-13,

     -2.382191739347918e-13,

     }

};

#define tantab_l (win[SHORT_TYPE]+3)

#define cx (win[SHORT_TYPE]+12)

#define ca (win[SHORT_TYPE]+20)

#define cs (win[SHORT_TYPE]+28)

/************************************************************************

*

* window_subband()

*

* PURPOSE:  Overlapping window on PCM samples

*

* SEMANTICS:

* 32 16-bit pcm samples are scaled to fractional 2's complement and

* concatenated to the end of the window buffer #x#. The updated window

* buffer #x# is then windowed by the analysis window #c# to produce the

* windowed sample #z#

*

************************************************************************/

/*

 *      new IDCT routine written by Takehiro TOMINAGA

 */

static const int order[] = {

    0, 1, 16, 17, 8, 9, 24, 25, 4, 5, 20, 21, 12, 13, 28, 29,

    2, 3, 18, 19, 10, 11, 26, 27, 6, 7, 22, 23, 14, 15, 30, 31

};

/* returns sum_j=0^31 a[j]*cos(PI*j*(k+1/2)/32), 0<=k<32 */

inline static void

window_subband(const sample_t * x1, FLOAT a[SBLIMIT])

{

    int     i;

    FLOAT const *wp = enwindow + 10;

    const sample_t *x2 = &x1[238 - 14 - 286];

    for (i = -15; i < 0; i++) {

        FLOAT   w, s, t;

        w = wp[-10];

        s = x2[-224] * w;

        t = x1[224] * w;

        w = wp[-9];

        s += x2[-160] * w;

        t += x1[160] * w;

        w = wp[-8];

        s += x2[-96] * w;

        t += x1[96] * w;

        w = wp[-7];

        s += x2[-32] * w;

        t += x1[32] * w;

        w = wp[-6];

        s += x2[32] * w;

        t += x1[-32] * w;

        w = wp[-5];

        s += x2[96] * w;

        t += x1[-96] * w;

        w = wp[-4];

        s += x2[160] * w;

        t += x1[-160] * w;

        w = wp[-3];

        s += x2[224] * w;

        t += x1[-224] * w;

        w = wp[-2];

        s += x1[-256] * w;

        t -= x2[256] * w;

        w = wp[-1];

        s += x1[-192] * w;

        t -= x2[192] * w;

        w = wp[0];

        s += x1[-128] * w;

        t -= x2[128] * w;

        w = wp[1];

        s += x1[-64] * w;

        t -= x2[64] * w;

        w = wp[2];

        s += x1[0] * w;

        t -= x2[0] * w;

        w = wp[3];

        s += x1[64] * w;

        t -= x2[-64] * w;

        w = wp[4];

        s += x1[128] * w;

        t -= x2[-128] * w;

        w = wp[5];

        s += x1[192] * w;

        t -= x2[-192] * w;

        /*

         * this multiplyer could be removed, but it needs more 256 FLOAT data.

         * thinking about the data cache performance, I think we should not

         * use such a huge table. tt 2000/Oct/25

         */

        s *= wp[6];

        w = t - s;

        a[30 + i * 2] = t + s;

        a[31 + i * 2] = wp[7] * w;

        wp += 18;

        x1--;

        x2++;

    }

    {

        FLOAT   s, t, u, v;

        t = x1[-16] * wp[-10];

        s = x1[-32] * wp[-2];

        t += (x1[-48] - x1[16]) * wp[-9];

        s += x1[-96] * wp[-1];

        t += (x1[-80] + x1[48]) * wp[-8];

        s += x1[-160] * wp[0];

        t += (x1[-112] - x1[80]) * wp[-7];

        s += x1[-224] * wp[1];

        t += (x1[-144] + x1[112]) * wp[-6];

        s -= x1[32] * wp[2];

        t += (x1[-176] - x1[144]) * wp[-5];

        s -= x1[96] * wp[3];

        t += (x1[-208] + x1[176]) * wp[-4];

        s -= x1[160] * wp[4];

        t += (x1[-240] - x1[208]) * wp[-3];

        s -= x1[224];

        u = s - t;

        v = s + t;

        t = a[14];

        s = a[15] - t;

        a[31] = v + t;  /* A0 */

        a[30] = u + s;  /* A1 */

        a[15] = u - s;  /* A2 */

        a[14] = v - t;  /* A3 */

    }

    {

        FLOAT   xr;

        xr = a[28] - a[0];

        a[0] += a[28];

        a[28] = xr * wp[-2 * 18 + 7];

        xr = a[29] - a[1];

        a[1] += a[29];

        a[29] = xr * wp[-2 * 18 + 7];

        xr = a[26] - a[2];

        a[2] += a[26];

        a[26] = xr * wp[-4 * 18 + 7];

        xr = a[27] - a[3];

        a[3] += a[27];

        a[27] = xr * wp[-4 * 18 + 7];

        xr = a[24] - a[4];

        a[4] += a[24];

        a[24] = xr * wp[-6 * 18 + 7];

        xr = a[25] - a[5];

        a[5] += a[25];

        a[25] = xr * wp[-6 * 18 + 7];

        xr = a[22] - a[6];

        a[6] += a[22];

        a[22] = xr * SQRT2;

        xr = a[23] - a[7];

        a[7] += a[23];

        a[23] = xr * SQRT2 - a[7];

        a[7] -= a[6];

        a[22] -= a[7];

        a[23] -= a[22];

        xr = a[6];

        a[6] = a[31] - xr;

        a[31] = a[31] + xr;

        xr = a[7];

        a[7] = a[30] - xr;

        a[30] = a[30] + xr;

        xr = a[22];

        a[22] = a[15] - xr;

        a[15] = a[15] + xr;

        xr = a[23];

        a[23] = a[14] - xr;

        a[14] = a[14] + xr;

        xr = a[20] - a[8];

        a[8] += a[20];

        a[20] = xr * wp[-10 * 18 + 7];

        xr = a[21] - a[9];

        a[9] += a[21];

        a[21] = xr * wp[-10 * 18 + 7];

        xr = a[18] - a[10];

        a[10] += a[18];

        a[18] = xr * wp[-12 * 18 + 7];

        xr = a[19] - a[11];

        a[11] += a[19];

        a[19] = xr * wp[-12 * 18 + 7];

        xr = a[16] - a[12];

        a[12] += a[16];

        a[16] = xr * wp[-14 * 18 + 7];

        xr = a[17] - a[13];

        a[13] += a[17];

        a[17] = xr * wp[-14 * 18 + 7];

        xr = -a[20] + a[24];

        a[20] += a[24];

        a[24] = xr * wp[-12 * 18 + 7];

        xr = -a[21] + a[25];

        a[21] += a[25];

        a[25] = xr * wp[-12 * 18 + 7];

        xr = a[4] - a[8];

        a[4] += a[8];

        a[8] = xr * wp[-12 * 18 + 7];

        xr = a[5] - a[9];

        a[5] += a[9];

        a[9] = xr * wp[-12 * 18 + 7];

        xr = a[0] - a[12];

        a[0] += a[12];

        a[12] = xr * wp[-4 * 18 + 7];

        xr = a[1] - a[13];

        a[1] += a[13];

        a[13] = xr * wp[-4 * 18 + 7];

        xr = a[16] - a[28];

        a[16] += a[28];

        a[28] = xr * wp[-4 * 18 + 7];

        xr = -a[17] + a[29];

        a[17] += a[29];

        a[29] = xr * wp[-4 * 18 + 7];

        xr = SQRT2 * (a[2] - a[10]);

        a[2] += a[10];

        a[10] = xr;

        xr = SQRT2 * (a[3] - a[11]);

        a[3] += a[11];

        a[11] = xr;

        xr = SQRT2 * (-a[18] + a[26]);

        a[18] += a[26];

        a[26] = xr - a[18];

        xr = SQRT2 * (-a[19] + a[27]);

        a[19] += a[27];

        a[27] = xr - a[19];

        xr = a[2];

        a[19] -= a[3];

        a[3] -= xr;

        a[2] = a[31] - xr;

        a[31] += xr;

        xr = a[3];

        a[11] -= a[19];

        a[18] -= xr;

        a[3] = a[30] - xr;

        a[30] += xr;

        xr = a[18];

        a[27] -= a[11];

        a[19] -= xr;

        a[18] = a[15] - xr;

        a[15] += xr;

        xr = a[19];

        a[10] -= xr;

        a[19] = a[14] - xr;

        a[14] += xr;

        xr = a[10];

        a[11] -= xr;

        a[10] = a[23] - xr;

        a[23] += xr;

        xr = a[11];

        a[26] -= xr;

        a[11] = a[22] - xr;

        a[22] += xr;

        xr = a[26];

        a[27] -= xr;

        a[26] = a[7] - xr;

        a[7] += xr;

        xr = a[27];

        a[27] = a[6] - xr;

        a[6] += xr;

        xr = SQRT2 * (a[0] - a[4]);

        a[0] += a[4];

        a[4] = xr;

        xr = SQRT2 * (a[1] - a[5]);

        a[1] += a[5];

        a[5] = xr;

        xr = SQRT2 * (a[16] - a[20]);

        a[16] += a[20];

        a[20] = xr;

        xr = SQRT2 * (a[17] - a[21]);

        a[17] += a[21];

        a[21] = xr;

        xr = -SQRT2 * (a[8] - a[12]);

        a[8] += a[12];

        a[12] = xr - a[8];

        xr = -SQRT2 * (a[9] - a[13]);

        a[9] += a[13];

        a[13] = xr - a[9];

        xr = -SQRT2 * (a[25] - a[29]);

        a[25] += a[29];

        a[29] = xr - a[25];

        xr = -SQRT2 * (a[24] + a[28]);

        a[24] -= a[28];

        a[28] = xr - a[24];

        xr = a[24] - a[16];

        a[24] = xr;

        xr = a[20] - xr;

        a[20] = xr;

        xr = a[28] - xr;

        a[28] = xr;

        xr = a[25] - a[17];

        a[25] = xr;

        xr = a[21] - xr;

        a[21] = xr;

        xr = a[29] - xr;

        a[29] = xr;

        xr = a[17] - a[1];

        a[17] = xr;

        xr = a[9] - xr;

        a[9] = xr;

        xr = a[25] - xr;

        a[25] = xr;

        xr = a[5] - xr;

        a[5] = xr;

        xr = a[21] - xr;

        a[21] = xr;

        xr = a[13] - xr;

        a[13] = xr;

        xr = a[29] - xr;

        a[29] = xr;

        xr = a[1] - a[0];

        a[1] = xr;

        xr = a[16] - xr;

        a[16] = xr;

        xr = a[17] - xr;

        a[17] = xr;

        xr = a[8] - xr;

        a[8] = xr;

        xr = a[9] - xr;

        a[9] = xr;

        xr = a[24] - xr;

        a[24] = xr;

        xr = a[25] - xr;

        a[25] = xr;

        xr = a[4] - xr;

        a[4] = xr;

        xr = a[5] - xr;

        a[5] = xr;

        xr = a[20] - xr;

        a[20] = xr;

        xr = a[21] - xr;

        a[21] = xr;

        xr = a[12] - xr;

        a[12] = xr;

        xr = a[13] - xr;

        a[13] = xr;

        xr = a[28] - xr;

        a[28] = xr;

        xr = a[29] - xr;

        a[29] = xr;

        xr = a[0];

        a[0] += a[31];

        a[31] -= xr;

        xr = a[1];

        a[1] += a[30];

        a[30] -= xr;

        xr = a[16];

        a[16] += a[15];

        a[15] -= xr;

        xr = a[17];

        a[17] += a[14];

        a[14] -= xr;

        xr = a[8];

        a[8] += a[23];

        a[23] -= xr;

        xr = a[9];

        a[9] += a[22];

        a[22] -= xr;

        xr = a[24];

        a[24] += a[7];

        a[7] -= xr;

        xr = a[25];

        a[25] += a[6];

        a[6] -= xr;

        xr = a[4];

        a[4] += a[27];

        a[27] -= xr;

        xr = a[5];

        a[5] += a[26];

        a[26] -= xr;

        xr = a[20];

        a[20] += a[11];

        a[11] -= xr;

        xr = a[21];

        a[21] += a[10];

        a[10] -= xr;

        xr = a[12];

        a[12] += a[19];

        a[19] -= xr;

        xr = a[13];

        a[13] += a[18];

        a[18] -= xr;

        xr = a[28];

        a[28] += a[3];

        a[3] -= xr;

        xr = a[29];

        a[29] += a[2];

        a[2] -= xr;

    }

}

/*-------------------------------------------------------------------*/

/*                                                                   */

/*   Function: Calculation of the MDCT                               */

/*   In the case of long blocks (type 0,1,3) there are               */

/*   36 coefficents in the time domain and 18 in the frequency       */

/*   domain.                                                         */

/*   In the case of short blocks (type 2) there are 3                */

/*   transformations with short length. This leads to 12 coefficents */

/*   in the time and 6 in the frequency domain. In this case the     */

/*   results are stored side by side in the vector out[].            */

/*                                                                   */

/*   New layer3                                                      */

/*                                                                   */

/*-------------------------------------------------------------------*/

inline static void

mdct_short(FLOAT * inout)

{

    int     l;

    for (l = 0; l < 3; l++) {

        FLOAT   tc0, tc1, tc2, ts0, ts1, ts2;

        ts0 = inout[2 * 3] * win[SHORT_TYPE][0] - inout[5 * 3];

        tc0 = inout[0 * 3] * win[SHORT_TYPE][2] - inout[3 * 3];

        tc1 = ts0 + tc0;

        tc2 = ts0 - tc0;

        ts0 = inout[5 * 3] * win[SHORT_TYPE][0] + inout[2 * 3];

        tc0 = inout[3 * 3] * win[SHORT_TYPE][2] + inout[0 * 3];

        ts1 = ts0 + tc0;

        ts2 = -ts0 + tc0;

        tc0 = (inout[1 * 3] * win[SHORT_TYPE][1] - inout[4 * 3]) * 2.069978111953089e-11; /* tritab_s[1] */

        ts0 = (inout[4 * 3] * win[SHORT_TYPE][1] + inout[1 * 3]) * 2.069978111953089e-11; /* tritab_s[1] */

        inout[3 * 0] = tc1 * 1.907525191737280e-11 /* tritab_s[2] */  + tc0;

        inout[3 * 5] = -ts1 * 1.907525191737280e-11 /* tritab_s[0] */  + ts0;

        tc2 = tc2 * 0.86602540378443870761 * 1.907525191737281e-11 /* tritab_s[2] */ ;

        ts1 = ts1 * 0.5 * 1.907525191737281e-11 + ts0;

        inout[3 * 1] = tc2 - ts1;

        inout[3 * 2] = tc2 + ts1;

        tc1 = tc1 * 0.5 * 1.907525191737281e-11 - tc0;

        ts2 = ts2 * 0.86602540378443870761 * 1.907525191737281e-11 /* tritab_s[0] */ ;

        inout[3 * 3] = tc1 + ts2;

        inout[3 * 4] = tc1 - ts2;

        inout++;

    }

}

inline static void

mdct_long(FLOAT * out, FLOAT const *in)

{

    FLOAT   ct, st;

    {

        FLOAT   tc1, tc2, tc3, tc4, ts5, ts6, ts7, ts8;

        /* 1,2, 5,6, 9,10, 13,14, 17 */

        tc1 = in[17] - in[9];

        tc3 = in[15] - in[11];

        tc4 = in[14] - in[12];

        ts5 = in[0] + in[8];

        ts6 = in[1] + in[7];