mirror of https://github.com/mpv-player/mpv
56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
|
/*
|
||
|
|
** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
|
||
|
|
** Copyright (C) 2003 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: pulse.c,v 1.6 2003/07/29 08:20:13 menno Exp $
|
||
|
|
**/
|
||
|
|
|
||
|
|
#include "common.h"
|
||
|
|
#include "structs.h"
|
||
|
|
|
||
|
|
#include "syntax.h"
|
||
|
|
#include "pulse.h"
|
||
|
|
|
||
|
|
uint8_t pulse_decode(ic_stream *ics, int16_t *spec_data, uint16_t framelen)
|
||
|
|
{
|
||
|
|
uint8_t i;
|
||
|
|
uint16_t 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 (k >= framelen)
|
||
|
|
return 15; /* should not be possible */
|
||
|
|
|
||
|
|
if (spec_data[k] > 0)
|
||
|
|
spec_data[k] += pul->pulse_amp[i];
|
||
|
|
else
|
||
|
|
spec_data[k] -= pul->pulse_amp[i];
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|