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Diffstat (limited to 'lib/rbcodec/codecs/libspeex/filterbank.h')
-rw-r--r-- | lib/rbcodec/codecs/libspeex/filterbank.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libspeex/filterbank.h b/lib/rbcodec/codecs/libspeex/filterbank.h new file mode 100644 index 0000000000..3e889a22f7 --- /dev/null +++ b/lib/rbcodec/codecs/libspeex/filterbank.h | |||
@@ -0,0 +1,66 @@ | |||
1 | /* Copyright (C) 2006 Jean-Marc Valin */ | ||
2 | /** | ||
3 | @file filterbank.h | ||
4 | @brief Converting between psd and filterbank | ||
5 | */ | ||
6 | /* | ||
7 | Redistribution and use in source and binary forms, with or without | ||
8 | modification, are permitted provided that the following conditions are | ||
9 | met: | ||
10 | |||
11 | 1. Redistributions of source code must retain the above copyright notice, | ||
12 | this list of conditions and the following disclaimer. | ||
13 | |||
14 | 2. Redistributions in binary form must reproduce the above copyright | ||
15 | notice, this list of conditions and the following disclaimer in the | ||
16 | documentation and/or other materials provided with the distribution. | ||
17 | |||
18 | 3. The name of the author may not be used to endorse or promote products | ||
19 | derived from this software without specific prior written permission. | ||
20 | |||
21 | THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | ||
22 | IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | ||
23 | OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
24 | DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, | ||
25 | INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | ||
26 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
27 | SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
28 | HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | ||
29 | STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN | ||
30 | ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
31 | POSSIBILITY OF SUCH DAMAGE. | ||
32 | */ | ||
33 | |||
34 | #ifndef FILTERBANK_H | ||
35 | #define FILTERBANK_H | ||
36 | |||
37 | #include "arch.h" | ||
38 | |||
39 | typedef struct { | ||
40 | int *bank_left; | ||
41 | int *bank_right; | ||
42 | spx_word16_t *filter_left; | ||
43 | spx_word16_t *filter_right; | ||
44 | #ifndef FIXED_POINT | ||
45 | float *scaling; | ||
46 | #endif | ||
47 | int nb_banks; | ||
48 | int len; | ||
49 | } FilterBank; | ||
50 | |||
51 | |||
52 | FilterBank *filterbank_new(int banks, spx_word32_t sampling, int len, int type); | ||
53 | |||
54 | void filterbank_destroy(FilterBank *bank); | ||
55 | |||
56 | void filterbank_compute_bank32(FilterBank *bank, spx_word32_t *ps, spx_word32_t *mel); | ||
57 | |||
58 | void filterbank_compute_psd16(FilterBank *bank, spx_word16_t *mel, spx_word16_t *psd); | ||
59 | |||
60 | #ifndef FIXED_POINT | ||
61 | void filterbank_compute_bank(FilterBank *bank, float *psd, float *mel); | ||
62 | void filterbank_compute_psd(FilterBank *bank, float *mel, float *psd); | ||
63 | #endif | ||
64 | |||
65 | |||
66 | #endif | ||