FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/lsp_avg.c @ 499:446a4a2955ba

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
libgsmhr1/typedefs.h: initial port
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 19 Jun 2024 00:50:29 +0000
parents 9cd332a94c97
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
389
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 *****************************************************************************
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 *
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * R99 Version 3.3.0
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * REL-4 Version 4.1.0
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 *
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 *****************************************************************************
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 *
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 * File : lsp_avg.c
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 * Purpose: : LSP averaging and history
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 *
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 *****************************************************************************
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 */
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 /*
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 *****************************************************************************
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 * MODULE INCLUDE FILE AND VERSION ID
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 *****************************************************************************
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 */
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 #include "namespace.h"
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 #include "lsp_avg.h"
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 /*
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 *****************************************************************************
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 * INCLUDE FILES
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 *****************************************************************************
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 */
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 #include "basic_op.h"
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 #include "oper_32b.h"
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 #include "no_count.h"
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 #include "q_plsf5_tab.h"
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 #include "memops.h"
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 /*
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 *****************************************************************************
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 * LOCAL VARIABLES AND TABLES
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 *****************************************************************************
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 */
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 /*
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 *****************************************************************************
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 * PUBLIC PROGRAM CODE
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 *****************************************************************************
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 */
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 /*
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 **************************************************************************
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 *
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 * Function : lsp_avg_reset
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 * Purpose : Resets state memory
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 *
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 **************************************************************************
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 */
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 void lsp_avg_reset (lsp_avgState *st)
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 {
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 Copy(mean_lsf, &st->lsp_meanSave[0], M);
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 }
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 /*
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 **************************************************************************
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 *
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 * Function : lsp_avg
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 * Purpose : Calculate the LSP averages
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 *
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 **************************************************************************
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 */
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 void lsp_avg (
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 lsp_avgState *st, /* i/o : State struct Q15 */
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 Word16 *lsp /* i : state of the state machine Q15 */
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 )
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 {
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 Word16 i;
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 Word32 L_tmp; /* Q31 */
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 for (i = 0; i < M; i++) {
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 /* mean = 0.84*mean */
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 L_tmp = L_deposit_h(st->lsp_meanSave[i]);
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 L_tmp = L_msu(L_tmp, EXPCONST, st->lsp_meanSave[i]);
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 /* Add 0.16 of newest LSPs to mean */
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 L_tmp = L_mac(L_tmp, EXPCONST, lsp[i]);
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 /* Save means */
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 st->lsp_meanSave[i] = round(L_tmp); move16(); /* Q15 */
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87 }
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89 return;
9cd332a94c97 libtwamr: integrate lsp_avg.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90 }