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/*
** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
** Copyright (C) 2003-2005 M. Bakker, Nero 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.
**
** The "appropriate copyright message" mentioned in section 2c of the GPLv2
** must read: "Code from FAAD2 is copyright (c) Nero AG, www.nero.com"
**
** Commercial non-GPL licensing of this software is possible.
** For more info contact Nero AG through Mpeg4AAClicense@nero.com.
**
** $Id: is.h,v 1.20 2007/11/01 12:33:31 menno Exp $
**/
#ifndef __IS_H__
#define __IS_H__
#ifdef __cplusplus
extern "C" {
#endif
#include "syntax.h"
void is_decode(ic_stream *ics, ic_stream *icsr, real_t *l_spec, real_t *r_spec,
uint16_t frame_len);
static INLINE int8_t is_intensity(ic_stream *ics, uint8_t group, uint8_t sfb)
{
switch (ics->sfb_cb[group][sfb])
{
case INTENSITY_HCB:
return 1;
case INTENSITY_HCB2:
return -1;
default:
return 0;
}
}
static INLINE int8_t invert_intensity(ic_stream *ics, uint8_t group, uint8_t sfb)
{
if (ics->ms_mask_present == 1)
return (1-2*ics->ms_used[group][sfb]);
return 1;
}
#ifdef __cplusplus
}
#endif
#endif
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