shithub: aacdec

ref: 3501993184b7b711ab99d442ac651a6fb1310b6f
dir: /libfaad/pulse.c/

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/*
** FAAD - Freeware Advanced Audio Decoder
** Copyright (C) 2002 M. Bakker
**  
** 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.
**
** $Id: pulse.c,v 1.1 2002/01/14 19:15:57 menno Exp $
**/

#include "syntax.h"
#include "pulse.h"

void pulse_decode(ic_stream *ics, short *spec_data)
{
    int i, k;
    pulse_info *pul = &ics->pul;

    k = ics->swb_offset[pul->pulse_start_sfb];

    for(i = 0; i <= pul->number_pulse; i++) {
        k += pul->pulse_offset[i];
        if (spec_data[k] > 0)
            spec_data[k] += pul->pulse_amp[i];
        else
            spec_data[k] -= pul->pulse_amp[i];
    }
}