FreeCalypso > hg > gsm-codec-lib

annotate libgsmfr2/tfo_main.c @ 540:5595293e4f29

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
gsmx-to-tw5a utility: use emit_hex_frame() in libtest
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 22 Sep 2024 00:36:35 +0000
parents c7b1e796e91b
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
528
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This module implements a wrapper around the main processing functions
531
c7b1e796e91b libgsmfr2 TFO: implement main entry point function
Mychaela Falconia <falcon@freecalypso.org>
parents: 528
diff changeset
3 * of our Rx DTX or TFO preprocessor, handling RTP input per TW-TS-001.
528
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 */
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 #include <stdint.h>
531
c7b1e796e91b libgsmfr2 TFO: implement main entry point function
Mychaela Falconia <falcon@freecalypso.org>
parents: 528
diff changeset
7 #include <string.h>
528
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 #include "tw_gsmfr.h"
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9
531
c7b1e796e91b libgsmfr2 TFO: implement main entry point function
Mychaela Falconia <falcon@freecalypso.org>
parents: 528
diff changeset
10 int gsmfr_tfo_xfrm_main(struct gsmfr_preproc_state *st, const uint8_t *rtp_pl,
c7b1e796e91b libgsmfr2 TFO: implement main entry point function
Mychaela Falconia <falcon@freecalypso.org>
parents: 528
diff changeset
11 unsigned rtp_pl_len, uint8_t *out)
528
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 {
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 switch (rtp_pl_len) {
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 case 0:
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 /* BFI-no-data, but not an invalid RTP input per se */
531
c7b1e796e91b libgsmfr2 TFO: implement main entry point function
Mychaela Falconia <falcon@freecalypso.org>
parents: 528
diff changeset
16 gsmfr_preproc_bfi(st, 0, out);
528
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 return 0;
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 case 1:
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 if ((rtp_pl[0] & 0xF6) != 0xE6)
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 goto bad_rtp_input;
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 /* TW-TS-001 No_Data frame */
531
c7b1e796e91b libgsmfr2 TFO: implement main entry point function
Mychaela Falconia <falcon@freecalypso.org>
parents: 528
diff changeset
22 gsmfr_preproc_bfi(st, rtp_pl[0] & 1, out);
528
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 return 0;
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 case GSMFR_RTP_FRAME_LEN:
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 if ((rtp_pl[0] & 0xF0) != 0xD0)
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 goto bad_rtp_input;
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 /* basic RTP format */
531
c7b1e796e91b libgsmfr2 TFO: implement main entry point function
Mychaela Falconia <falcon@freecalypso.org>
parents: 528
diff changeset
28 memcpy(out, rtp_pl, GSMFR_RTP_FRAME_LEN);
c7b1e796e91b libgsmfr2 TFO: implement main entry point function
Mychaela Falconia <falcon@freecalypso.org>
parents: 528
diff changeset
29 gsmfr_preproc_good_frame_hm(st, out);
528
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 return 0;
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 case GSMFR_RTP_FRAME_LEN+1:
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 if ((rtp_pl[0] & 0xF4) != 0xE0)
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 goto bad_rtp_input;
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 if ((rtp_pl[1] & 0xF0) != 0xD0)
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 goto bad_rtp_input;
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 /* extended RTP format (TW-TS-001) */
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 if (rtp_pl[0] & 0x02)
531
c7b1e796e91b libgsmfr2 TFO: implement main entry point function
Mychaela Falconia <falcon@freecalypso.org>
parents: 528
diff changeset
38 gsmfr_preproc_bfi_bits(st, rtp_pl + 1, rtp_pl[0] & 1,
c7b1e796e91b libgsmfr2 TFO: implement main entry point function
Mychaela Falconia <falcon@freecalypso.org>
parents: 528
diff changeset
39 out);
c7b1e796e91b libgsmfr2 TFO: implement main entry point function
Mychaela Falconia <falcon@freecalypso.org>
parents: 528
diff changeset
40 else {
c7b1e796e91b libgsmfr2 TFO: implement main entry point function
Mychaela Falconia <falcon@freecalypso.org>
parents: 528
diff changeset
41 memcpy(out, rtp_pl + 1, GSMFR_RTP_FRAME_LEN);
c7b1e796e91b libgsmfr2 TFO: implement main entry point function
Mychaela Falconia <falcon@freecalypso.org>
parents: 528
diff changeset
42 gsmfr_preproc_good_frame_hm(st, out);
c7b1e796e91b libgsmfr2 TFO: implement main entry point function
Mychaela Falconia <falcon@freecalypso.org>
parents: 528
diff changeset
43 }
528
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 return 0;
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 default:
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 bad_rtp_input:
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 /*
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 * Treat it like BFI-no-data, and tell the caller
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 * that we received an invalid RTP payload.
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 */
531
c7b1e796e91b libgsmfr2 TFO: implement main entry point function
Mychaela Falconia <falcon@freecalypso.org>
parents: 528
diff changeset
51 gsmfr_preproc_bfi(st, 0, out);
528
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 return -1;
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 }
f681fb758041 libgsmfr2: add gsmfr_fulldec_rtp_in()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 }