FreeCalypso > hg > gsm-codec-lib
annotate libgsmfr2/unpack_frame.c @ 417:f17e42c63058
libtwamr: integrate ol_ltp.c
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Tue, 07 May 2024 03:21:14 +0000 |
parents | f0220c141d2c |
children |
rev | line source |
---|---|
258
c344b4f35eb7
libgsmfr2: implement gsmfr_pack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
1 /* |
260
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
2 * This module holds our gsmfr_unpack_frame() function: unpacking a single |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
3 * GSM-FR frame from libgsm/RTP format into a broken-down struct of params. |
258
c344b4f35eb7
libgsmfr2: implement gsmfr_pack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
4 */ |
c344b4f35eb7
libgsmfr2: implement gsmfr_pack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
5 |
c344b4f35eb7
libgsmfr2: implement gsmfr_pack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
6 #include <stdint.h> |
c344b4f35eb7
libgsmfr2: implement gsmfr_pack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
7 #include "tw_gsmfr.h" |
c344b4f35eb7
libgsmfr2: implement gsmfr_pack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
8 |
260
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
9 void gsmfr_unpack_frame(const uint8_t *frame, struct gsmfr_param_frame *param) |
258
c344b4f35eb7
libgsmfr2: implement gsmfr_pack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
10 { |
260
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
11 const uint8_t *c = frame; |
258
c344b4f35eb7
libgsmfr2: implement gsmfr_pack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
12 unsigned sub; |
c344b4f35eb7
libgsmfr2: implement gsmfr_pack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
13 |
260
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
14 param->LARc[0] = (*c++ & 0xF) << 2; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
15 param->LARc[0] |= (*c >> 6) & 0x3; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
16 param->LARc[1] = *c++ & 0x3F; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
17 param->LARc[2] = (*c >> 3) & 0x1F; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
18 param->LARc[3] = (*c++ & 0x7) << 2; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
19 param->LARc[3] |= (*c >> 6) & 0x3; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
20 param->LARc[4] = (*c >> 2) & 0xF; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
21 param->LARc[5] = (*c++ & 0x3) << 2; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
22 param->LARc[5] |= (*c >> 6) & 0x3; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
23 param->LARc[6] = (*c >> 3) & 0x7; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
24 param->LARc[7] = *c++ & 0x7; |
258
c344b4f35eb7
libgsmfr2: implement gsmfr_pack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
25 for (sub = 0; sub < 4; sub++) { |
260
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
26 param->Nc[sub] = (*c >> 1) & 0x7F; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
27 param->bc[sub] = (*c++ & 0x1) << 1; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
28 param->bc[sub] |= (*c >> 7) & 0x1; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
29 param->Mc[sub] = (*c >> 5) & 0x3; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
30 param->xmaxc[sub] = (*c++ & 0x1F) << 1; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
31 param->xmaxc[sub] |= (*c >> 7) & 0x1; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
32 param->xMc[sub][0] = (*c >> 4) & 0x7; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
33 param->xMc[sub][1] = (*c >> 1) & 0x7; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
34 param->xMc[sub][2] = (*c++ & 0x1) << 2; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
35 param->xMc[sub][2] |= (*c >> 6) & 0x3; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
36 param->xMc[sub][3] = (*c >> 3) & 0x7; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
37 param->xMc[sub][4] = *c++ & 0x7; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
38 param->xMc[sub][5] = (*c >> 5) & 0x7; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
39 param->xMc[sub][6] = (*c >> 2) & 0x7; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
40 param->xMc[sub][7] = (*c++ & 0x3) << 1; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
41 param->xMc[sub][7] |= (*c >> 7) & 0x1; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
42 param->xMc[sub][8] = (*c >> 4) & 0x7; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
43 param->xMc[sub][9] = (*c >> 1) & 0x7; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
44 param->xMc[sub][10] = (*c++ & 0x1) << 2; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
45 param->xMc[sub][10] |= (*c >> 6) & 0x3; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
46 param->xMc[sub][11] = (*c >> 3) & 0x7; |
f0220c141d2c
libgsmfr2: implement gsmfr_unpack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
258
diff
changeset
|
47 param->xMc[sub][12] = *c++ & 0x7; |
258
c344b4f35eb7
libgsmfr2: implement gsmfr_pack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
48 } |
c344b4f35eb7
libgsmfr2: implement gsmfr_pack_frame()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
49 } |