FreeCalypso > hg > gsm-codec-lib

annotate libgsmfr2/xmaxc_mean.c @ 585:3c6bf0d26ee7 default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
TW-TS-005 reader: fix maximum line length bug TW-TS-005 section 4.1 states: The maximum allowed length of each line is 80 characters, not including the OS-specific newline encoding. The implementation of this line length limit in the TW-TS-005 hex file reader function in the present suite was wrong, such that lines of the full maximum length could not be read. Fix it. Note that this bug affects comment lines too, not just actual RTP payloads. Neither Annex A nor Annex B features an RTP payload format that goes to the maximum of 40 bytes, but if a comment line goes to the maximum allowed length of 80 characters not including the terminating newline, the bug will be triggered, necessitating the present fix.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 25 Feb 2025 07:49:28 +0000
parents a33edf624061
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
248
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * The function implemented in this module computes a mean Xmaxc
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * for comfort noise generation from the 4 subframe Xmaxc parameters
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * extracted from an input frame.
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 */
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 #include <stdint.h>
256
a33edf624061 libgsmfr2: start with API definition and port of libgsmfrp code
Mychaela Falconia <falcon@freecalypso.org>
parents: 248
diff changeset
8 #include "tw_gsmfr.h"
a33edf624061 libgsmfr2: start with API definition and port of libgsmfrp code
Mychaela Falconia <falcon@freecalypso.org>
parents: 248
diff changeset
9 #include "pp_internal.h"
248
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 static const uint16_t dequant_table[64] = {
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 0, 1, 2, 3, 4, 5, 6, 7,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 8, 9, 10, 11, 12, 13, 14, 15,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 16, 18, 20, 22, 24, 26, 28, 30,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 32, 36, 40, 44, 48, 52, 56, 60,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 64, 72, 80, 88, 96, 104, 112, 120,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 128, 144, 160, 176, 192, 208, 224, 240,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 256, 288, 320, 352, 384, 416, 448, 480,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 512, 576, 640, 704, 768, 832, 896, 960,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 };
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 static const uint8_t requant_table[1024] = {
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 24, 24, 24, 24, 25, 25, 25, 25, 26, 26, 26, 26, 27, 27, 27, 27,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 28, 28, 28, 28, 29, 29, 29, 29, 30, 30, 30, 30, 31, 31, 31, 31,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 32, 32, 32, 32, 32, 32, 32, 32, 33, 33, 33, 33, 33, 33, 33, 33,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 34, 34, 34, 34, 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, 35, 35,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 36, 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, 37, 37, 37, 37, 37,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 38, 38, 38, 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, 39, 39, 39,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56, 56,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63,
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87 };
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88
256
a33edf624061 libgsmfr2: start with API definition and port of libgsmfrp code
Mychaela Falconia <falcon@freecalypso.org>
parents: 248
diff changeset
89 uint8_t gsmfr_preproc_xmaxc_mean(const uint8_t *frame)
248
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90 {
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 unsigned sub, xmaxc, sum;
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
92
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93 sum = 0;
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
94 for (sub = 0; sub < 4; sub++) {
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
95 xmaxc = ((frame[sub*7+6] & 0x1F) << 1) | (frame[sub*7+7] >> 7);
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
96 sum += dequant_table[xmaxc];
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
97 }
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
98 xmaxc = requant_table[sum >> 2];
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
99 return xmaxc;
6ac547f0b903 libgsmfrp: yet another invalid SID logic change, for 1.0.2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
100 }