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comparison libtwamr/post_pro.h @ 392:a0f914a28371

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libtwamr: integrate post_pro.c
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 06 May 2024 18:37:52 +0000
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391:be8edf9e6bc1 392:a0f914a28371
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 : post_pro.h
11 * Purpose : Postprocessing of output speech.
12 *
13 * - 2nd order high pass filtering with cut
14 * off frequency at 60 Hz.
15 * - Multiplication of output by two.
16 *
17 ********************************************************************************
18 */
19 #ifndef post_pro_h
20 #define post_pro_h "$Id $"
21
22 /*
23 ********************************************************************************
24 * INCLUDE FILES
25 ********************************************************************************
26 */
27 #include "typedef.h"
28
29 /*
30 ********************************************************************************
31 * LOCAL VARIABLES AND TABLES
32 ********************************************************************************
33 */
34
35 /*
36 ********************************************************************************
37 * DEFINITION OF DATA TYPES
38 ********************************************************************************
39 */
40 typedef struct {
41 Word16 y2_hi;
42 Word16 y2_lo;
43 Word16 y1_hi;
44 Word16 y1_lo;
45 Word16 x0;
46 Word16 x1;
47 } Post_ProcessState;
48
49 /*
50 ********************************************************************************
51 * DECLARATION OF PROTOTYPES
52 ********************************************************************************
53 */
54
55 void Post_Process_reset (Post_ProcessState *st);
56 /* reset of Post processing state (i.e. set state memory to zero)
57 returns 0 on success
58 */
59
60 int Post_Process (
61 Post_ProcessState *st, /* i/o : post process state */
62 Word16 signal[], /* i/o : signal */
63 Word16 lg /* i : lenght of signal */
64 );
65
66 #endif