diff options
Diffstat (limited to 'lib/rbcodec/codecs/libfaad/pulse.c')
-rw-r--r-- | lib/rbcodec/codecs/libfaad/pulse.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libfaad/pulse.c b/lib/rbcodec/codecs/libfaad/pulse.c new file mode 100644 index 0000000000..d75877db70 --- /dev/null +++ b/lib/rbcodec/codecs/libfaad/pulse.c | |||
@@ -0,0 +1,56 @@ | |||
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. | ||
18 | ** | ||
19 | ** Any non-GPL usage of this software or parts of this software is strictly | ||
20 | ** forbidden. | ||
21 | ** | ||
22 | ** Commercial non-GPL licensing of this software is possible. | ||
23 | ** For more info contact Ahead Software through Mpeg4AAClicense@nero.com. | ||
24 | ** | ||
25 | ** $Id$ | ||
26 | **/ | ||
27 | |||
28 | #include "common.h" | ||
29 | #include "structs.h" | ||
30 | |||
31 | #include "syntax.h" | ||
32 | #include "pulse.h" | ||
33 | |||
34 | uint8_t pulse_decode(ic_stream *ics, int16_t *spec_data, uint16_t framelen) | ||
35 | { | ||
36 | uint8_t i; | ||
37 | uint16_t k; | ||
38 | pulse_info *pul = &(ics->pul); | ||
39 | |||
40 | k = ics->swb_offset[pul->pulse_start_sfb]; | ||
41 | |||
42 | for (i = 0; i <= pul->number_pulse; i++) | ||
43 | { | ||
44 | k += pul->pulse_offset[i]; | ||
45 | |||
46 | if (k >= framelen) | ||
47 | return 15; /* should not be possible */ | ||
48 | |||
49 | if (spec_data[k] > 0) | ||
50 | spec_data[k] += pul->pulse_amp[i]; | ||
51 | else | ||
52 | spec_data[k] -= pul->pulse_amp[i]; | ||
53 | } | ||
54 | |||
55 | return 0; | ||
56 | } | ||