FreeCalypso > hg > gsm-net-reveng

annotate trau-decode/gsmhr_unpack.c @ 63:4a906c2075bc

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
top Makefile: d144 depends on utils
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 25 Sep 2024 18:49:39 +0000
parents 9bcdb091c24d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
28
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This module has been copied from WIP libgsmhr1: it holds the function that
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * unpacks a single GSM-HR codec frame from TS 101 318 packed format into
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * the codec's native array of parameters.
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 */
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 #include <stdint.h>
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 #include "gsmhr_unpack.h"
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 void gsmhr_unpack_ts101318(const uint8_t *payload, int16_t *params)
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 {
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 const uint8_t *c = payload;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 params[0] = (*c >> 3) & 0x1F;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 params[1] = (*c++ & 0x7) << 8;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 params[1] |= *c++;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 params[2] = (*c++ & 0xFF) << 1;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 params[2] |= (*c >> 7) & 0x1;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 params[3] = (*c++ & 0x7F) << 1;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 params[3] |= (*c >> 7) & 0x1;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 params[4] = (*c >> 6) & 0x1;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 params[5] = (*c >> 4) & 0x3;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 if (params[5]) {
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 /* voiced modes */
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 params[6] = (*c++ & 0xF) << 4;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 params[6] |= (*c >> 4) & 0xF;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 params[7] = (*c++ & 0xF) << 5;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 params[7] |= (*c >> 3) & 0x1F;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 params[8] = (*c++ & 0x7) << 2;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 params[8] |= (*c >> 6) & 0x3;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 params[9] = (*c >> 2) & 0xF;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 params[10] = (*c++ & 0x3) << 7;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 params[10] |= (*c >> 1) & 0x7F;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 params[11] = (*c++ & 0x1) << 4;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 params[11] |= (*c >> 4) & 0xF;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 params[12] = *c++ & 0xF;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 params[13] = (*c++ & 0xFF) << 1;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 params[13] |= (*c >> 7) & 0x1;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 params[14] = (*c >> 2) & 0x1F;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 params[15] = (*c++ & 0x3) << 2;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 params[15] |= (*c >> 6) & 0x3;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 params[16] = (*c++ & 0x3F) << 3;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 params[16] |= (*c >> 5) & 0x7;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 params[17] = *c++ & 0x1F;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 } else {
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 /* unvoiced mode */
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 params[6] = (*c++ & 0xF) << 3;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 params[6] |= (*c >> 5) & 0x7;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 params[7] = (*c++ & 0x1F) << 2;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 params[7] |= (*c >> 6) & 0x3;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 params[8] = (*c >> 1) & 0x1F;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 params[9] = (*c++ & 0x1) << 6;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 params[9] |= (*c >> 2) & 0x3F;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 params[10] = (*c++ & 0x3) << 5;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 params[10] |= (*c >> 3) & 0x1F;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 params[11] = (*c++ & 0x7) << 2;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 params[11] |= (*c >> 6) & 0x3;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 params[12] = (*c++ & 0x3F) << 1;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 params[12] |= (*c >> 7) & 0x1;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 params[13] = *c++ & 0x7F;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 params[14] = (*c >> 3) & 0x1F;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 params[15] = (*c++ & 0x7) << 4;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 params[15] |= (*c >> 4) & 0xF;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 params[16] = (*c++ & 0xF) << 3;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 params[16] |= (*c >> 5) & 0x7;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 params[17] = *c++ & 0x1F;
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 }
9bcdb091c24d trau-decode: new program trau-hr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 }