FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/d4_17pf.c @ 496:af70bf42eb1b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
libgsmhr1: implement DHF const array
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 18 Jun 2024 00:15:46 +0000
parents dfaa8f322a8d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
334
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 ********************************************************************************
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 *
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * R99 Version 3.3.0
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * REL-4 Version 4.1.0
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 *
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 ********************************************************************************
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 *
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 * File : d4_17pf.c
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 * Purpose : Algebraic codebook decoder
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 *
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 ********************************************************************************
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 */
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 /*
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 ********************************************************************************
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 * MODULE INCLUDE FILE AND VERSION ID
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 ********************************************************************************
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 */
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 #include "namespace.h"
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 #include "d4_17pf.h"
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 /*
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 ********************************************************************************
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 * INCLUDE FILES
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 ********************************************************************************
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 */
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 #include "typedef.h"
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 #include "basic_op.h"
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 #include "no_count.h"
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 #include "cnst.h"
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 #include "graytab.h"
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 /*
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 ********************************************************************************
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 * LOCAL VARIABLES AND TABLES
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 ********************************************************************************
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 */
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 #define NB_PULSE 4
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 /*
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 ********************************************************************************
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 * PUBLIC PROGRAM CODE
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 ********************************************************************************
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 */
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 /*************************************************************************
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 *
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 * FUNCTION: decod_ACELP()
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 *
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 * PURPOSE: Algebraic codebook decoder
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 *
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 *************************************************************************/
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 void decode_4i40_17bits(
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 Word16 sign, /* i : signs of 4 pulses. */
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 Word16 index, /* i : Positions of the 4 pulses. */
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 Word16 cod[] /* o : algebraic (fixed) codebook excitation */
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 )
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 {
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 Word16 i, j;
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 Word16 pos[NB_PULSE];
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 /* Decode the positions */
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 i = index & 7; logic16 ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 i = dgray[i]; move16 ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 pos[0] = add(i, shl(i, 2)); /* pos0 =i*5 */ move16 ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 index = shr(index, 3);
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 i = index & 7; logic16 ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 i = dgray[i]; move16 ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 i = add(i, shl(i, 2)); /* pos1 =i*5+1 */
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 pos[1] = add(i, 1); move16 ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 index = shr(index, 3);
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 i = index & 7; logic16 ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 i = dgray[i]; move16 ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 i = add(i, shl(i, 2)); /* pos2 =i*5+1 */
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 pos[2] = add(i, 2); move16 ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 index = shr(index, 3);
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 j = index & 1; logic16 ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87 index = shr(index, 1);
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88 i = index & 7; logic16 ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89 i = dgray[i]; move16 ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 i = add(i, shl(i, 2)); /* pos3 =i*5+3+j */
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
92 i = add(i, 3);
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93 pos[3] = add(i, j); move16 ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
94
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
95 /* decode the signs and build the codeword */
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
96
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
97 for (i = 0; i < L_SUBFR; i++) {
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
98 cod[i] = 0; move16 ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
99 }
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
100
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
101 for (j = 0; j < NB_PULSE; j++) {
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
102 i = sign & 1; logic16 ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
103 sign = shr(sign, 1);
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
104
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
105 test ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
106 if (i != 0) {
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107 cod[pos[j]] = 8191; move16 ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
108 } else {
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
109 cod[pos[j]] = -8192; move16 ();
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
110 }
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
111 }
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
112
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
113 return;
dfaa8f322a8d libtwamr: integrate d4_17pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
114 }