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Diffstat (limited to 'lib/rbcodec/codecs/libopus/celt/vq.h')
-rw-r--r-- | lib/rbcodec/codecs/libopus/celt/vq.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libopus/celt/vq.h b/lib/rbcodec/codecs/libopus/celt/vq.h new file mode 100644 index 0000000000..1ceeeeb268 --- /dev/null +++ b/lib/rbcodec/codecs/libopus/celt/vq.h | |||
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1 | /* Copyright (c) 2007-2008 CSIRO | ||
2 | Copyright (c) 2007-2009 Xiph.Org Foundation | ||
3 | Written by Jean-Marc Valin */ | ||
4 | /** | ||
5 | @file vq.h | ||
6 | @brief Vector quantisation of the residual | ||
7 | */ | ||
8 | /* | ||
9 | Redistribution and use in source and binary forms, with or without | ||
10 | modification, are permitted provided that the following conditions | ||
11 | are met: | ||
12 | |||
13 | - Redistributions of source code must retain the above copyright | ||
14 | notice, this list of conditions and the following disclaimer. | ||
15 | |||
16 | - Redistributions in binary form must reproduce the above copyright | ||
17 | notice, this list of conditions and the following disclaimer in the | ||
18 | documentation and/or other materials provided with the distribution. | ||
19 | |||
20 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
21 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
22 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
23 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER | ||
24 | OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | ||
25 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | ||
26 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | ||
27 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | ||
28 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | ||
29 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
30 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
31 | */ | ||
32 | |||
33 | #ifndef VQ_H | ||
34 | #define VQ_H | ||
35 | |||
36 | #include "entenc.h" | ||
37 | #include "entdec.h" | ||
38 | #include "modes.h" | ||
39 | |||
40 | /** Algebraic pulse-vector quantiser. The signal x is replaced by the sum of | ||
41 | * the pitch and a combination of pulses such that its norm is still equal | ||
42 | * to 1. This is the function that will typically require the most CPU. | ||
43 | * @param x Residual signal to quantise/encode (returns quantised version) | ||
44 | * @param W Perceptual weight to use when optimising (currently unused) | ||
45 | * @param N Number of samples to encode | ||
46 | * @param K Number of pulses to use | ||
47 | * @param p Pitch vector (it is assumed that p+x is a unit vector) | ||
48 | * @param enc Entropy encoder state | ||
49 | * @ret A mask indicating which blocks in the band received pulses | ||
50 | */ | ||
51 | unsigned alg_quant(celt_norm *X, int N, int K, int spread, int B, | ||
52 | ec_enc *enc | ||
53 | #ifdef RESYNTH | ||
54 | , opus_val16 gain | ||
55 | #endif | ||
56 | ); | ||
57 | |||
58 | /** Algebraic pulse decoder | ||
59 | * @param x Decoded normalised spectrum (returned) | ||
60 | * @param N Number of samples to decode | ||
61 | * @param K Number of pulses to use | ||
62 | * @param p Pitch vector (automatically added to x) | ||
63 | * @param dec Entropy decoder state | ||
64 | * @ret A mask indicating which blocks in the band received pulses | ||
65 | */ | ||
66 | unsigned alg_unquant(celt_norm *X, int N, int K, int spread, int B, | ||
67 | ec_dec *dec, opus_val16 gain); | ||
68 | |||
69 | void renormalise_vector(celt_norm *X, int N, opus_val16 gain); | ||
70 | |||
71 | int stereo_itheta(celt_norm *X, celt_norm *Y, int stereo, int N); | ||
72 | |||
73 | #endif /* VQ_H */ | ||