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Diffstat (limited to 'lib/rbcodec/codecs/libopus/analysis.h')
-rw-r--r-- | lib/rbcodec/codecs/libopus/analysis.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libopus/analysis.h b/lib/rbcodec/codecs/libopus/analysis.h new file mode 100644 index 0000000000..289c845e82 --- /dev/null +++ b/lib/rbcodec/codecs/libopus/analysis.h | |||
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1 | /* Copyright (c) 2011 Xiph.Org Foundation | ||
2 | Written by Jean-Marc Valin */ | ||
3 | /* | ||
4 | Redistribution and use in source and binary forms, with or without | ||
5 | modification, are permitted provided that the following conditions | ||
6 | are met: | ||
7 | |||
8 | - Redistributions of source code must retain the above copyright | ||
9 | notice, this list of conditions and the following disclaimer. | ||
10 | |||
11 | - Redistributions in binary form must reproduce the above copyright | ||
12 | notice, this list of conditions and the following disclaimer in the | ||
13 | documentation and/or other materials provided with the distribution. | ||
14 | |||
15 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
16 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
17 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
18 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR | ||
19 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | ||
20 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | ||
21 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | ||
22 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | ||
23 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | ||
24 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
25 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
26 | */ | ||
27 | |||
28 | #ifndef ANALYSIS_H | ||
29 | #define ANALYSIS_H | ||
30 | |||
31 | #include "celt.h" | ||
32 | #include "opus_private.h" | ||
33 | #include "mlp.h" | ||
34 | |||
35 | #define NB_FRAMES 8 | ||
36 | #define NB_TBANDS 18 | ||
37 | #define ANALYSIS_BUF_SIZE 720 /* 30 ms at 24 kHz */ | ||
38 | |||
39 | /* At that point we can stop counting frames because it no longer matters. */ | ||
40 | #define ANALYSIS_COUNT_MAX 10000 | ||
41 | |||
42 | #define DETECT_SIZE 100 | ||
43 | |||
44 | /* Uncomment this to print the MLP features on stdout. */ | ||
45 | /*#define MLP_TRAINING*/ | ||
46 | |||
47 | typedef struct { | ||
48 | int arch; | ||
49 | int application; | ||
50 | opus_int32 Fs; | ||
51 | #define TONALITY_ANALYSIS_RESET_START angle | ||
52 | float angle[240]; | ||
53 | float d_angle[240]; | ||
54 | float d2_angle[240]; | ||
55 | opus_val32 inmem[ANALYSIS_BUF_SIZE]; | ||
56 | int mem_fill; /* number of usable samples in the buffer */ | ||
57 | float prev_band_tonality[NB_TBANDS]; | ||
58 | float prev_tonality; | ||
59 | int prev_bandwidth; | ||
60 | float E[NB_FRAMES][NB_TBANDS]; | ||
61 | float logE[NB_FRAMES][NB_TBANDS]; | ||
62 | float lowE[NB_TBANDS]; | ||
63 | float highE[NB_TBANDS]; | ||
64 | float meanE[NB_TBANDS+1]; | ||
65 | float mem[32]; | ||
66 | float cmean[8]; | ||
67 | float std[9]; | ||
68 | float Etracker; | ||
69 | float lowECount; | ||
70 | int E_count; | ||
71 | int count; | ||
72 | int analysis_offset; | ||
73 | int write_pos; | ||
74 | int read_pos; | ||
75 | int read_subframe; | ||
76 | float hp_ener_accum; | ||
77 | float rnn_state[MAX_NEURONS]; | ||
78 | opus_val32 downmix_state[3]; | ||
79 | AnalysisInfo info[DETECT_SIZE]; | ||
80 | } TonalityAnalysisState; | ||
81 | |||
82 | /** Initialize a TonalityAnalysisState struct. | ||
83 | * | ||
84 | * This performs some possibly slow initialization steps which should | ||
85 | * not be repeated every analysis step. No allocated memory is retained | ||
86 | * by the state struct, so no cleanup call is required. | ||
87 | */ | ||
88 | void tonality_analysis_init(TonalityAnalysisState *analysis, opus_int32 Fs); | ||
89 | |||
90 | /** Reset a TonalityAnalysisState stuct. | ||
91 | * | ||
92 | * Call this when there's a discontinuity in the data. | ||
93 | */ | ||
94 | void tonality_analysis_reset(TonalityAnalysisState *analysis); | ||
95 | |||
96 | void tonality_get_info(TonalityAnalysisState *tonal, AnalysisInfo *info_out, int len); | ||
97 | |||
98 | void run_analysis(TonalityAnalysisState *analysis, const CELTMode *celt_mode, const void *analysis_pcm, | ||
99 | int analysis_frame_size, int frame_size, int c1, int c2, int C, opus_int32 Fs, | ||
100 | int lsb_depth, downmix_func downmix, AnalysisInfo *analysis_info); | ||
101 | |||
102 | #endif | ||