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comparison libtwamr/dtx_enc.h @ 407:5a1d18542f8a

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libtwamr: integrate dtx_dec.c and dtx_enc.c
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 07 May 2024 00:05:12 +0000
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406:85e9768d497f 407:5a1d18542f8a
1 /*
2 ********************************************************************************
3 *
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
5 * R99 Version 3.3.0
6 * REL-4 Version 4.1.0
7 *
8 ********************************************************************************
9 *
10 * File : dtx_enc.h
11 * Purpose : DTX mode computation of SID parameters
12 *
13 ********************************************************************************
14 */
15 #ifndef dtx_enc_h
16 #define dtx_enc_h "$Id $"
17
18 /*
19 ********************************************************************************
20 * INCLUDE FILES
21 ********************************************************************************
22 */
23 #include "tw_amr.h"
24 #include "typedef.h"
25 #include "cnst.h"
26 #include "q_plsf.h"
27 #include "gc_pred.h"
28 #include "dtx_common.h"
29
30 /*
31 ********************************************************************************
32 * DEFINITION OF DATA TYPES
33 ********************************************************************************
34 */
35 typedef struct {
36 Word16 lsp_hist[M * DTX_HIST_SIZE];
37 Word16 log_en_hist[DTX_HIST_SIZE];
38 Word16 hist_ptr;
39 Word16 log_en_index;
40 Word16 init_lsf_vq_index;
41 Word16 lsp_index[3];
42
43 /* DTX handler stuff */
44 Word16 dtxHangoverCount;
45 Word16 decAnaElapsedCount;
46
47 } dtx_encState;
48 /*
49 ********************************************************************************
50 * DECLARATION OF PROTOTYPES
51 ********************************************************************************
52 */
53
54 /*
55 **************************************************************************
56 *
57 * Function : dtx_enc_reset
58 * Purpose : Resets state memory
59 * Returns : 0 on success
60 *
61 **************************************************************************
62 */
63 void dtx_enc_reset (dtx_encState *st);
64
65 /*
66 **************************************************************************
67 *
68 * Function : dtx_enc
69 * Purpose :
70 * Description :
71 *
72 **************************************************************************
73 */
74 int dtx_enc(dtx_encState *st, /* i/o : State struct */
75 Word16 computeSidFlag, /* i : compute SID */
76 Q_plsfState *qSt, /* i/o : Qunatizer state struct */
77 gc_predState* predState, /* i/o : State struct */
78 Word16 **anap /* o : analysis parameters */
79 );
80
81 /*
82 **************************************************************************
83 *
84 * Function : dtx_buffer
85 * Purpose : handles the DTX buffer
86 *
87 **************************************************************************
88 */
89 int dtx_buffer(dtx_encState *st, /* i/o : State struct */
90 Word16 lsp_new[], /* i : LSP vector */
91 Word16 speech[] /* i : speech samples */
92 );
93
94 /*
95 **************************************************************************
96 *
97 * Function : tx_dtx_handler
98 * Purpose : adds extra speech hangover to analyze speech on the decoding side.
99 * Description : returns 1 when a new SID analysis may be made
100 * otherwise it adds the appropriate hangover after a sequence
101 * with out updates of SID parameters .
102 *
103 **************************************************************************
104 */
105 Word16 tx_dtx_handler(dtx_encState *st, /* i/o : State struct */
106 Word16 vadFlag, /* i : vad control variable */
107 enum Mode *usedMode /* o : mode changed or not */
108 );
109
110 #endif