FreeCalypso > hg > gsm-codec-lib

annotate dev/xmaxc-tables.c @ 288:e0b46ac2c326

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
gsmfr-encode-r: convert to libgsmfr2
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 14 Apr 2024 06:20:04 +0000
parents 56d3fbacd115
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
247
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * For libgsmfrp: if we are going to initiate comfort noise generation
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * upon receiving an invalid SID, and if we are going to harvest the
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * needed LARc and Xmaxc parameters from the last speech frame, we'll
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * need a way to compute a single mean Xmaxc from the 4 subframe Xmaxc
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * parameters of that last speech frame.
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 *
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 * This program generates Xmaxc dequantization and requantization tables
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 * that are specifically optimized for performing this mean manipulation.
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 */
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 #include <stdio.h>
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 #include <stdint.h>
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 #include <stdlib.h>
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 static uint16_t dequant_table[64];
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 static uint8_t requant_table[1024];
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 static void
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 compute_dequant()
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 {
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 unsigned xmaxc, dequant, step;
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 dequant = 0;
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 step = 1;
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 for (xmaxc = 0; xmaxc < 64; xmaxc++) {
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 dequant_table[xmaxc] = dequant;
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 dequant += step;
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 if ((xmaxc & 7) == 7 && xmaxc != 7)
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 step <<= 1;
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 }
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 }
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 static void
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 compute_requant()
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 {
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 unsigned x, c;
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 for (x = 0; x < 1024; x++) {
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 for (c = 0; c < 63; c++) {
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 if (x < dequant_table[c+1])
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 break;
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 }
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 requant_table[x] = c;
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 }
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 }
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 static void
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 print_dequant()
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 {
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 unsigned c, r;
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 puts("const uint16_t dequant_table[64] = {");
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 for (c = 0; c < 64; c++) {
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 r = c & 7;
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 if (!r)
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 putchar('\t');
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 printf("%3u,", dequant_table[c]);
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 if (r == 7)
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 putchar('\n');
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 else
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 putchar(' ');
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 }
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 fputs("};\n\n", stdout);
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 }
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 static void
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 print_requant()
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 {
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 unsigned x, r;
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 puts("const uint8_t requant_table[1024] = {");
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 for (x = 0; x < 1024; x++) {
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 r = x & 15;
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 if (!r)
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 putchar('\t');
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 printf("%2u,", requant_table[x]);
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 if (r == 15)
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 putchar('\n');
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 else
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 putchar(' ');
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 }
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 fputs("};\n", stdout);
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 }
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 main(argc, argv)
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87 char **argv;
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88 {
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89 compute_dequant();
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90 compute_requant();
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 print_dequant();
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
92 print_requant();
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93 exit(0);
56d3fbacd115 dev: new program xmaxc-tables
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
94 }