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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/libspeex/vbr.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/libspeex/vbr.h')
-rw-r--r-- | lib/rbcodec/codecs/libspeex/vbr.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libspeex/vbr.h b/lib/rbcodec/codecs/libspeex/vbr.h new file mode 100644 index 0000000000..ff1e3e46f2 --- /dev/null +++ b/lib/rbcodec/codecs/libspeex/vbr.h | |||
@@ -0,0 +1,70 @@ | |||
1 | /* Copyright (C) 2002 Jean-Marc Valin */ | ||
2 | /** | ||
3 | @file vbr.h | ||
4 | @brief Variable Bit-Rate (VBR) related routines | ||
5 | */ | ||
6 | /* | ||
7 | Redistribution and use in source and binary forms, with or without | ||
8 | modification, are permitted provided that the following conditions | ||
9 | are met: | ||
10 | |||
11 | - Redistributions of source code must retain the above copyright | ||
12 | notice, this list of conditions and the following disclaimer. | ||
13 | |||
14 | - 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 | - Neither the name of the Xiph.org Foundation nor the names of its | ||
19 | contributors may be used to endorse or promote products derived from | ||
20 | this software without specific prior written permission. | ||
21 | |||
22 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
23 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
24 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
25 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR | ||
26 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | ||
27 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | ||
28 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | ||
29 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | ||
30 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | ||
31 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
32 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
33 | |||
34 | */ | ||
35 | |||
36 | |||
37 | #ifndef VBR_H | ||
38 | #define VBR_H | ||
39 | |||
40 | #include "arch.h" | ||
41 | |||
42 | #define VBR_MEMORY_SIZE 5 | ||
43 | |||
44 | extern const float vbr_nb_thresh[9][11]; | ||
45 | extern const float vbr_hb_thresh[5][11]; | ||
46 | extern const float vbr_uhb_thresh[2][11]; | ||
47 | |||
48 | /** VBR state. */ | ||
49 | typedef struct VBRState { | ||
50 | float energy_alpha; | ||
51 | float average_energy; | ||
52 | float last_energy; | ||
53 | float last_log_energy[VBR_MEMORY_SIZE]; | ||
54 | float accum_sum; | ||
55 | float last_pitch_coef; | ||
56 | float soft_pitch; | ||
57 | float last_quality; | ||
58 | float noise_level; | ||
59 | float noise_accum; | ||
60 | float noise_accum_count; | ||
61 | int consec_noise; | ||
62 | } VBRState; | ||
63 | |||
64 | void vbr_init(VBRState *vbr); | ||
65 | |||
66 | float vbr_analysis(VBRState *vbr, spx_word16_t *sig, int len, int pitch, float pitch_coef); | ||
67 | |||
68 | void vbr_destroy(VBRState *vbr); | ||
69 | |||
70 | #endif | ||