FreeCalypso > hg > gsm-codec-lib

annotate libgsmefr/bfi_nodata.c @ 408:8847c1740e78

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
libtwamr: integrate VAD1
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 07 May 2024 00:56:10 +0000
parents 452c1d5a6268
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
99
7152cc7d1ca3 libgsmefr: implement EFR_decode_bfi_nodata()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
7152cc7d1ca3 libgsmefr: implement EFR_decode_bfi_nodata()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * In the expected usage mode of our libgsmefr decoder as part of "soft TRAU"
7152cc7d1ca3 libgsmefr: implement EFR_decode_bfi_nodata()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * uplink implementation, there will be times when the radio subsystem tells
7152cc7d1ca3 libgsmefr: implement EFR_decode_bfi_nodata()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * us that a frame has been lost, but we don't have any errored bits to feed
160
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
5 * to the decoder as ETSI canon calls for. Specifically, the canonical EFR
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
6 * decoder will use the "fixed codebook excitation pulses" part of errored
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
7 * frames when a BFI comes in after speech, although not when BFI comes in
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
8 * after SID. Our solution in EFR_decode_bfi_nodata(): we look in the
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
9 * decoder state to see if we are in speech mode, and if we are, we fill
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
10 * the needed parameters with a PRNG.
99
7152cc7d1ca3 libgsmefr: implement EFR_decode_bfi_nodata()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 */
7152cc7d1ca3 libgsmefr: implement EFR_decode_bfi_nodata()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12
7152cc7d1ca3 libgsmefr: implement EFR_decode_bfi_nodata()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 #include <string.h>
7152cc7d1ca3 libgsmefr: implement EFR_decode_bfi_nodata()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 #include "gsm_efr.h"
160
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
15 #include "typedef.h"
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
16 #include "namespace.h"
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
17 #include "cnst.h"
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
18 #include "dtx.h"
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
19 #include "dec_state.h"
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
20
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
21 static void random_1035(Word32 *lfsr, Word16 *param_1035)
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
22 {
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
23 Word16 *p = param_1035;
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
24 Word16 i;
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
25
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
26 /* 5 params of bit width 4 */
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
27 for (i = 0; i < 5; i++)
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
28 *p++ = pseudonoise(lfsr, 4);
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
29 /* another 5 params of bit width 3 */
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
30 for (i = 0; i < 5; i++)
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
31 *p++ = pseudonoise(lfsr, 3);
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
32 }
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
33
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
34 static void random_bad_frame(struct EFR_decoder_state *st, Word16 *params)
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
35 {
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
36 Word32 *lfsr = &st->L_pn_seed_nodata;
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
37
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
38 random_1035(lfsr, params + 7);
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
39 random_1035(lfsr, params + 20);
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
40 random_1035(lfsr, params + 33);
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
41 random_1035(lfsr, params + 46);
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
42 }
99
7152cc7d1ca3 libgsmefr: implement EFR_decode_bfi_nodata()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43
7152cc7d1ca3 libgsmefr: implement EFR_decode_bfi_nodata()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 void EFR_decode_bfi_nodata(struct EFR_decoder_state *st, int taf,
7152cc7d1ca3 libgsmefr: implement EFR_decode_bfi_nodata()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 int16_t *pcm_out)
7152cc7d1ca3 libgsmefr: implement EFR_decode_bfi_nodata()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 {
7152cc7d1ca3 libgsmefr: implement EFR_decode_bfi_nodata()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 int16_t params[EFR_NUM_PARAMS];
7152cc7d1ca3 libgsmefr: implement EFR_decode_bfi_nodata()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48
183
452c1d5a6268 libgsmefr BFI w/o data: emit zero output after decoder reset
Mychaela Falconia <falcon@freecalypso.org>
parents: 160
diff changeset
49 if (st->reset_flag_old) {
452c1d5a6268 libgsmefr BFI w/o data: emit zero output after decoder reset
Mychaela Falconia <falcon@freecalypso.org>
parents: 160
diff changeset
50 memset(pcm_out, 0, sizeof(int16_t) * L_FRAME);
452c1d5a6268 libgsmefr BFI w/o data: emit zero output after decoder reset
Mychaela Falconia <falcon@freecalypso.org>
parents: 160
diff changeset
51 return;
452c1d5a6268 libgsmefr BFI w/o data: emit zero output after decoder reset
Mychaela Falconia <falcon@freecalypso.org>
parents: 160
diff changeset
52 }
99
7152cc7d1ca3 libgsmefr: implement EFR_decode_bfi_nodata()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 memset(params, 0, sizeof(int16_t) * EFR_NUM_PARAMS);
160
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
54 if (st->rxdtx_ctrl & RX_SP_FLAG)
eefef9f6d533 libgsmefr: randomize d1035pf params in no-data BFI case
Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
55 random_bad_frame(st, params);
99
7152cc7d1ca3 libgsmefr: implement EFR_decode_bfi_nodata()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 EFR_decode_params(st, params, 1, 0, taf, pcm_out);
7152cc7d1ca3 libgsmefr: implement EFR_decode_bfi_nodata()
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 }