FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/vad2.h @ 501:597b39aef484

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
libgsmhr1/mathhalf.h: rm unused declarations for non-saturating functions
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 19 Jun 2024 00:54:44 +0000
parents 0152c069d01f
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
410
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 ********************************************************************************
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 *
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * R99 Version 3.3.0
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * REL-4 Version 4.1.0
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 *
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 ********************************************************************************
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 *
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 * File : vad2.h
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 * Purpose : Voice Activity Detection (VAD) for AMR (option 2)
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 *
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 ********************************************************************************
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 #ifndef vad2_h
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 #define vad2_h "$Id $"
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 #include "typedef.h"
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 /***** Defines ****/
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 #define YES 1
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 #define NO 0
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 #define ON 1
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 #define OFF 0
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 #define TRUE 1
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 #define FALSE 0
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 #define FRM_LEN 80
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 #define DELAY 24
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 #define FFT_LEN 128
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 #define NUM_CHAN 16
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 #define LO_CHAN 0
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 #define HI_CHAN 15
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 #define UPDATE_THLD 35
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 #define HYSTER_CNT_THLD 6
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 #define UPDATE_CNT_THLD 50
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 #define SHIFT_STATE_0 0 /* channel energy scaled as 22,9 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 #define SHIFT_STATE_1 1 /* channel energy scaled as 27,4 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 #define NOISE_FLOOR_CHAN_0 512 /* 1.0 scaled as 22,9 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 #define MIN_CHAN_ENRG_0 32 /* 0.0625 scaled as 22,9 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 #define MIN_NOISE_ENRG_0 32 /* 0.0625 scaled as 22,9 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 #define INE_NOISE_0 8192 /* 16.0 scaled as 22,9 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 #define FRACTIONAL_BITS_0 9 /* used as input to fn10Log10() */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 #define NOISE_FLOOR_CHAN_1 16 /* 1.0 scaled as 27,4 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 #define MIN_CHAN_ENRG_1 1 /* 0.0625 scaled as 27,4 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 #define MIN_NOISE_ENRG_1 1 /* 0.0625 scaled as 27,4 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 #define INE_NOISE_1 256 /* 16.0 scaled as 27,4 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 #define FRACTIONAL_BITS_1 4 /* used as input to fn10Log10() */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 #define STATE_1_TO_0_SHIFT_R (FRACTIONAL_BITS_1-FRACTIONAL_BITS_0) /* state correction factor */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 #define STATE_0_TO_1_SHIFT_R (FRACTIONAL_BITS_0-FRACTIONAL_BITS_1) /* state correction factor */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 #define HIGH_ALPHA 29491 /* 0.9 scaled as 0,15 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 #define LOW_ALPHA 22938 /* 0.7 scaled as 0,15 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 #define ALPHA_RANGE (HIGH_ALPHA - LOW_ALPHA)
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 #define DEV_THLD 7168 /* 28.0 scaled as 7,8 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 #define PRE_EMP_FAC (-26214) /* -0.8 scaled as 0,15 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 #define CEE_SM_FAC 18022 /* 0.55 scaled as 0,15 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 #define ONE_MINUS_CEE_SM_FAC 14746 /* 0.45 scaled as 0,15 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 #define CNE_SM_FAC 3277 /* 0.1 scaled as 0,15 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 #define ONE_MINUS_CNE_SM_FAC 29491 /* 0.9 scaled as 0,15 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 #define FFT_HEADROOM 2
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 typedef struct
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 {
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 Word16 pre_emp_mem;
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 Word16 update_cnt;
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 Word16 hyster_cnt;
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 Word16 last_update_cnt;
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 Word16 ch_enrg_long_db[NUM_CHAN]; /* scaled as 7,8 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 Word32 Lframe_cnt;
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 Word32 Lch_enrg[NUM_CHAN]; /* scaled as 22,9 or 27,4 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 Word32 Lch_noise[NUM_CHAN]; /* scaled as 22,9 */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88 Word16 last_normb_shift; /* last block norm shift count */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90 Word16 tsnr; /* total signal-to-noise ratio in dB (scaled as 7,8) */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 Word16 hangover;
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
92 Word16 burstcount;
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93 Word16 fupdate_flag; /* forced update flag from previous frame */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
94 Word16 negSNRvar; /* Negative SNR variance (scaled as 7,8) */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
95 Word16 negSNRbias; /* sensitivity bias from negative SNR variance (scaled as 15,0) */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
96
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
97 Word16 shift_state; /* use 22,9 or 27,4 scaling for ch_enrg[] */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
98
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
99 Word32 L_R0;
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
100 Word32 L_Rmax;
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
101 Flag LTP_flag; /* Use to indicate the the LTP gain is > LTP_THRESH */
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
102
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
103 } vadState2;
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
104
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
105 /**** Prototypes ****/
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
106
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107 Word16 vad2 (Word16 *farray_ptr, vadState2 *st);
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
108 void vad2_reset (vadState2 *st);
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
109
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
110 void r_fft (Word16 *farray_ptr);
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
111 void LTP_flag_update (vadState2 *st, Word16 mode);
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
112
0152c069d01f libtwamr: integrate VAD2 main body
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
113 #endif