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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/lsp.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/lsp.h')
-rw-r--r-- | lib/rbcodec/codecs/libspeex/lsp.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libspeex/lsp.h b/lib/rbcodec/codecs/libspeex/lsp.h new file mode 100644 index 0000000000..c53e7769d3 --- /dev/null +++ b/lib/rbcodec/codecs/libspeex/lsp.h | |||
@@ -0,0 +1,64 @@ | |||
1 | /*---------------------------------------------------------------------------*\ | ||
2 | Original Copyright | ||
3 | FILE........: AK2LSPD.H | ||
4 | TYPE........: Turbo C header file | ||
5 | COMPANY.....: Voicetronix | ||
6 | AUTHOR......: James Whitehall | ||
7 | DATE CREATED: 21/11/95 | ||
8 | |||
9 | Modified by Jean-Marc Valin | ||
10 | |||
11 | This file contains functions for converting Linear Prediction | ||
12 | Coefficients (LPC) to Line Spectral Pair (LSP) and back. Note that the | ||
13 | LSP coefficients are not in radians format but in the x domain of the | ||
14 | unit circle. | ||
15 | |||
16 | \*---------------------------------------------------------------------------*/ | ||
17 | /** | ||
18 | @file lsp.h | ||
19 | @brief Line Spectral Pair (LSP) functions. | ||
20 | */ | ||
21 | /* Speex License: | ||
22 | |||
23 | Redistribution and use in source and binary forms, with or without | ||
24 | modification, are permitted provided that the following conditions | ||
25 | are met: | ||
26 | |||
27 | - Redistributions of source code must retain the above copyright | ||
28 | notice, this list of conditions and the following disclaimer. | ||
29 | |||
30 | - Redistributions in binary form must reproduce the above copyright | ||
31 | notice, this list of conditions and the following disclaimer in the | ||
32 | documentation and/or other materials provided with the distribution. | ||
33 | |||
34 | - Neither the name of the Xiph.org Foundation nor the names of its | ||
35 | contributors may be used to endorse or promote products derived from | ||
36 | this software without specific prior written permission. | ||
37 | |||
38 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
39 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
40 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
41 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR | ||
42 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | ||
43 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | ||
44 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | ||
45 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | ||
46 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | ||
47 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
48 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
49 | */ | ||
50 | |||
51 | #ifndef __AK2LSPD__ | ||
52 | #define __AK2LSPD__ | ||
53 | |||
54 | #include "arch.h" | ||
55 | |||
56 | int lpc_to_lsp (spx_coef_t *a, int lpcrdr, spx_lsp_t *freq, int nb, spx_word16_t delta, char *stack); | ||
57 | void lsp_to_lpc(spx_lsp_t *freq, spx_coef_t *ak, int lpcrdr, char *stack); | ||
58 | |||
59 | /*Added by JMV*/ | ||
60 | void lsp_enforce_margin(spx_lsp_t *lsp, int len, spx_word16_t margin); | ||
61 | |||
62 | void lsp_interpolate(spx_lsp_t *old_lsp, spx_lsp_t *new_lsp, spx_lsp_t *interp_lsp, int len, int subframe, int nb_subframes); | ||
63 | |||
64 | #endif /* __AK2LSPD__ */ | ||