FS#8961 - Anti-Aliased Fonts.
[kugel-rb/myfork.git] / apps / codecs / libfaad / pulse.c
blobd75877db708fc41ffbe6a87949eb74aa32eb07cb
1 /*
2 ** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
3 ** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
4 **
5 ** This program is free software; you can redistribute it and/or modify
6 ** it under the terms of the GNU General Public License as published by
7 ** the Free Software Foundation; either version 2 of the License, or
8 ** (at your option) any later version.
9 **
10 ** This program is distributed in the hope that it will be useful,
11 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
12 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 ** GNU General Public License for more details.
14 **
15 ** You should have received a copy of the GNU General Public License
16 ** along with this program; if not, write to the Free Software
17 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 ** Any non-GPL usage of this software or parts of this software is strictly
20 ** forbidden.
22 ** Commercial non-GPL licensing of this software is possible.
23 ** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
25 ** $Id$
26 **/
28 #include "common.h"
29 #include "structs.h"
31 #include "syntax.h"
32 #include "pulse.h"
34 uint8_t pulse_decode(ic_stream *ics, int16_t *spec_data, uint16_t framelen)
36 uint8_t i;
37 uint16_t k;
38 pulse_info *pul = &(ics->pul);
40 k = ics->swb_offset[pul->pulse_start_sfb];
42 for (i = 0; i <= pul->number_pulse; i++)
44 k += pul->pulse_offset[i];
46 if (k >= framelen)
47 return 15; /* should not be possible */
49 if (spec_data[k] > 0)
50 spec_data[k] += pul->pulse_amp[i];
51 else
52 spec_data[k] -= pul->pulse_amp[i];
55 return 0;