/*
 *	TwoLAME: an optimized MPEG Audio Layer Two encoder
 *
 *	Copyright (C) 2001-2004 Michael Cheng
 *	Copyright (C) 2004-2006 The TwoLAME Project
 *
 *	This library is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU Lesser General Public
 *	License as published by the Free Software Foundation; either
 *	version 2.1 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
 *	Lesser General Public License for more details.
 *
 *	You should have received a copy of the GNU Lesser 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
 *
 *  $Id$
 *
 */

#include <stdio.h>

#include "twolame.h"
#include "common.h"
#include "psycho_n1.h"

/* this is the null psychoacoustic model 
   All it does it copy some predefined values.
   No actual modelling takes place */

/* a bunch of SNR values I sort of made up	MFC 1 oct 99 
   Found by averaging the SNR values over a sound file 
   FIXME: Do a more rigourous investigation MFC Feb 2003 */

// From Castanets.wav
static const FLOAT snrdef[32] = {
    30, 17, 16, 10, 3, 12, 8, 2.5, 5, 5, 6, 6, 5, 6, 10, 6, -4,
    -10, -21, -30, -42, -55, -68, -75, -75, -75, -75, -75, -91, -107, -110, -108
};

#ifdef TESTSNR
// Using TMBG song "I am not your broom" about 1min. Psy Model 2
static const FLOAT snrdefa[32] = {
    31, 17, 11, 9, 9, 7, 5, 3, 3, 3, 3, 3, 3, 1, -0, -2,
    -5, -9, -15, -22, -32, -42, -54, -62, -63, -64, -66, -67, -83, -96, -98, -102
};

// Using Babylon5 "messages from earth: track 6" 15mins. Psy Model 2.
static const FLOAT snrdefb[32] = {
    30, 17, 11, 9, 8, 9, 6, 5, 5, 4, 4, 3, 2, -0, -2, -5,
    -8, -13, -19, -27, -35, -46, -55, -64, -65, -66, -68, -69, -84, -97, -99, -104
};

// Using Babylon5 "messages from earth: track 6" 15mins. Psy Model 1
static const FLOAT snrdefc[32] = {
    32, 26, 22, 18, 16, 14, 12, 11, 10, 9, 9, 8, 6, 6, 4, 2,
    0, -2, -7, -12, -18, -27, -35, -47, -53, -54, -56, -57, -57, -70, 0, 0
};
#endif

void psycho_n1(twolame_options * glopts, FLOAT ltmin[2][SBLIMIT], int stereo)
{
    int i, k;

    for (k = 0; k < stereo; k++)
        for (i = 0; i < SBLIMIT; i++)
            ltmin[k][i] = snrdef[i];
}

// vim:ts=4:sw=4:nowrap: