FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/enc_main.c @ 448:a2065e7d68bc

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
top Makefile: move libtwamr to SUBDIR_LIBPROD
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 10 May 2024 01:30:26 +0000
parents 2a094af3d384
children 4c9222d95647
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
419
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This C module is the top level entity for our stateful encoder engine.
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 */
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 #include <stdint.h>
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 #include <stdlib.h>
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 #include "tw_amr.h"
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 #include "namespace.h"
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 #include "typedef.h"
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 #include "cnst.h"
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 #include "cod_amr.h"
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 #include "pre_proc.h"
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 #include "sid_sync.h"
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 #include "e_homing.h"
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 struct amr_encoder_state {
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 cod_amrState cod;
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 Pre_ProcessState pre;
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 sid_syncState sid;
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 };
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 struct amr_encoder_state *amr_encoder_create(int dtx, int use_vad2)
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 {
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 struct amr_encoder_state *st;
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 st = malloc(sizeof(struct amr_encoder_state));
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 if (st)
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 amr_encoder_reset(st, dtx, use_vad2);
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 return st;
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 }
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 void amr_encoder_reset(struct amr_encoder_state *st, int dtx, int use_vad2)
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 {
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 cod_amr_reset(&st->cod, dtx, use_vad2);
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 Pre_Process_reset(&st->pre);
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 sid_sync_reset(&st->sid);
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 }
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 void amr_encode_frame(struct amr_encoder_state *st, enum Mode mode,
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 const int16_t *pcm, struct amr_param_frame *frame)
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 {
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 Word16 new_speech[L_FRAME], syn[L_FRAME];
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 enum Mode used_mode;
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 enum TXFrameType tx_type;
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 Word16 i;
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 /* input */
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 for (i = 0; i < L_FRAME; i++)
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 new_speech[i] = pcm[i] & 0xFFF8;
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 Pre_Process(&st->pre, new_speech, L_FRAME);
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 /* main process */
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 cod_amr(&st->cod, mode, new_speech, frame->param, &used_mode, syn);
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 sid_sync(&st->sid, used_mode, &tx_type);
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 frame->type = tx_type;
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 if (tx_type != TX_NO_DATA)
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 frame->mode = mode;
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 else
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 frame->mode = 0xFF;
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 /* encoder homing */
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 if (encoder_homing_frame_test(pcm))
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 amr_encoder_reset(st, st->cod.dtx, st->cod.vadSt.use_vad2);
2a094af3d384 libtwamr: implement encoder top level
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 }