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author | Sean Bartell <wingedtachikoma@gmail.com> | 2011-06-25 21:32:25 -0400 |
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committer | Nils Wallménius <nils@rockbox.org> | 2012-04-25 22:13:20 +0200 |
commit | f40bfc9267b13b54e6379dfe7539447662879d24 (patch) | |
tree | 9b20069d5e62809ff434061ad730096836f916f2 /lib/rbcodec/codecs/libwmavoice/mdct_tablegen.h | |
parent | a0009907de7a0107d49040d8a180f140e2eff299 (diff) | |
download | rockbox-f40bfc9267b13b54e6379dfe7539447662879d24.tar.gz rockbox-f40bfc9267b13b54e6379dfe7539447662879d24.zip |
Add codecs to librbcodec.
Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97
Reviewed-on: http://gerrit.rockbox.org/137
Reviewed-by: Nils Wallménius <nils@rockbox.org>
Tested-by: Nils Wallménius <nils@rockbox.org>
Diffstat (limited to 'lib/rbcodec/codecs/libwmavoice/mdct_tablegen.h')
-rw-r--r-- | lib/rbcodec/codecs/libwmavoice/mdct_tablegen.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libwmavoice/mdct_tablegen.h b/lib/rbcodec/codecs/libwmavoice/mdct_tablegen.h new file mode 100644 index 0000000000..51a0094221 --- /dev/null +++ b/lib/rbcodec/codecs/libwmavoice/mdct_tablegen.h | |||
@@ -0,0 +1,60 @@ | |||
1 | /* | ||
2 | * Header file for hardcoded MDCT tables | ||
3 | * | ||
4 | * Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de> | ||
5 | * | ||
6 | * This file is part of FFmpeg. | ||
7 | * | ||
8 | * FFmpeg is free software; you can redistribute it and/or | ||
9 | * modify it under the terms of the GNU Lesser General Public | ||
10 | * License as published by the Free Software Foundation; either | ||
11 | * version 2.1 of the License, or (at your option) any later version. | ||
12 | * | ||
13 | * FFmpeg is distributed in the hope that it will be useful, | ||
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
16 | * Lesser General Public License for more details. | ||
17 | * | ||
18 | * You should have received a copy of the GNU Lesser General Public | ||
19 | * License along with FFmpeg; if not, write to the Free Software | ||
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
21 | */ | ||
22 | |||
23 | #include <assert.h> | ||
24 | // do not use libavutil/libm.h since this is compiled both | ||
25 | // for the host and the target and config.h is only valid for the target | ||
26 | #include <math.h> | ||
27 | #include "libavutil/attributes.h" | ||
28 | |||
29 | #if !CONFIG_HARDCODED_TABLES | ||
30 | SINETABLE( 32); | ||
31 | SINETABLE( 64); | ||
32 | SINETABLE( 128); | ||
33 | SINETABLE( 256); | ||
34 | SINETABLE( 512); | ||
35 | SINETABLE(1024); | ||
36 | SINETABLE(2048); | ||
37 | SINETABLE(4096); | ||
38 | #else | ||
39 | #include "libavcodec/mdct_tables.h" | ||
40 | #endif | ||
41 | |||
42 | SINETABLE_CONST float * const ff_sine_windows[] = { | ||
43 | NULL, NULL, NULL, NULL, NULL, // unused | ||
44 | ff_sine_32 , ff_sine_64 , | ||
45 | ff_sine_128, ff_sine_256, ff_sine_512, ff_sine_1024, ff_sine_2048, ff_sine_4096 | ||
46 | }; | ||
47 | |||
48 | // Generate a sine window. | ||
49 | av_cold void ff_sine_window_init(float *window, int n) { | ||
50 | int i; | ||
51 | for(i = 0; i < n; i++) | ||
52 | window[i] = sinf((i + 0.5) * (M_PI / (2.0 * n))); | ||
53 | } | ||
54 | |||
55 | av_cold void ff_init_ff_sine_windows(int index) { | ||
56 | assert(index >= 0 && index < FF_ARRAY_ELEMS(ff_sine_windows)); | ||
57 | #if !CONFIG_HARDCODED_TABLES | ||
58 | ff_sine_window_init(ff_sine_windows[index], 1 << index); | ||
59 | #endif | ||
60 | } | ||