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Diffstat (limited to 'lib/rbcodec/codecs/libopus/celt/rate.h')
-rw-r--r-- | lib/rbcodec/codecs/libopus/celt/rate.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libopus/celt/rate.h b/lib/rbcodec/codecs/libopus/celt/rate.h new file mode 100644 index 0000000000..e0d5022326 --- /dev/null +++ b/lib/rbcodec/codecs/libopus/celt/rate.h | |||
@@ -0,0 +1,101 @@ | |||
1 | /* Copyright (c) 2007-2008 CSIRO | ||
2 | Copyright (c) 2007-2009 Xiph.Org Foundation | ||
3 | Written by Jean-Marc Valin */ | ||
4 | /* | ||
5 | Redistribution and use in source and binary forms, with or without | ||
6 | modification, are permitted provided that the following conditions | ||
7 | are met: | ||
8 | |||
9 | - Redistributions of source code must retain the above copyright | ||
10 | notice, this list of conditions and the following disclaimer. | ||
11 | |||
12 | - Redistributions in binary form must reproduce the above copyright | ||
13 | notice, this list of conditions and the following disclaimer in the | ||
14 | documentation and/or other materials provided with the distribution. | ||
15 | |||
16 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
17 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
18 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
19 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER | ||
20 | OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | ||
21 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | ||
22 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | ||
23 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | ||
24 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | ||
25 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
26 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
27 | */ | ||
28 | |||
29 | #ifndef RATE_H | ||
30 | #define RATE_H | ||
31 | |||
32 | #define MAX_PSEUDO 40 | ||
33 | #define LOG_MAX_PSEUDO 6 | ||
34 | |||
35 | #define MAX_PULSES 128 | ||
36 | |||
37 | #define MAX_FINE_BITS 8 | ||
38 | |||
39 | #define FINE_OFFSET 21 | ||
40 | #define QTHETA_OFFSET 4 | ||
41 | #define QTHETA_OFFSET_TWOPHASE 16 | ||
42 | |||
43 | #include "cwrs.h" | ||
44 | #include "modes.h" | ||
45 | |||
46 | void compute_pulse_cache(CELTMode *m, int LM); | ||
47 | |||
48 | static inline int get_pulses(int i) | ||
49 | { | ||
50 | return i<8 ? i : (8 + (i&7)) << ((i>>3)-1); | ||
51 | } | ||
52 | |||
53 | static inline int bits2pulses(const CELTMode *m, int band, int LM, int bits) | ||
54 | { | ||
55 | int i; | ||
56 | int lo, hi; | ||
57 | const unsigned char *cache; | ||
58 | |||
59 | LM++; | ||
60 | cache = m->cache.bits + m->cache.index[LM*m->nbEBands+band]; | ||
61 | |||
62 | lo = 0; | ||
63 | hi = cache[0]; | ||
64 | bits--; | ||
65 | for (i=0;i<LOG_MAX_PSEUDO;i++) | ||
66 | { | ||
67 | int mid = (lo+hi+1)>>1; | ||
68 | /* OPT: Make sure this is implemented with a conditional move */ | ||
69 | if ((int)cache[mid] >= bits) | ||
70 | hi = mid; | ||
71 | else | ||
72 | lo = mid; | ||
73 | } | ||
74 | if (bits- (lo == 0 ? -1 : (int)cache[lo]) <= (int)cache[hi]-bits) | ||
75 | return lo; | ||
76 | else | ||
77 | return hi; | ||
78 | } | ||
79 | |||
80 | static inline int pulses2bits(const CELTMode *m, int band, int LM, int pulses) | ||
81 | { | ||
82 | const unsigned char *cache; | ||
83 | |||
84 | LM++; | ||
85 | cache = m->cache.bits + m->cache.index[LM*m->nbEBands+band]; | ||
86 | return pulses == 0 ? 0 : cache[pulses]+1; | ||
87 | } | ||
88 | |||
89 | /** Compute the pulse allocation, i.e. how many pulses will go in each | ||
90 | * band. | ||
91 | @param m mode | ||
92 | @param offsets Requested increase or decrease in the number of bits for | ||
93 | each band | ||
94 | @param total Number of bands | ||
95 | @param pulses Number of pulses per band (returned) | ||
96 | @return Total number of bits allocated | ||
97 | */ | ||
98 | int compute_allocation(const CELTMode *m, int start, int end, const int *offsets, const int *cap, int alloc_trim, int *intensity, int *dual_stero, | ||
99 | opus_int32 total, opus_int32 *balance, int *pulses, int *ebits, int *fine_priority, int C, int LM, ec_ctx *ec, int encode, int prev); | ||
100 | |||
101 | #endif | ||