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comparison pcma2efr/gen-amr-2fr.c @ 28:4f47447fd17f

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pcma2efr: starting with DHF check
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 13 May 2024 02:45:17 +0000
parents pcmu2efr/gen-amr-2fr.c@2628a34fe75b
children
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27:2095f3c23dad 28:4f47447fd17f
1 /*
2 * The code in this module takes linear_input_array[] from gen160.c
3 * and generates EFR-format frames by way of libtwamr encoder.
4 * This version does a second frame pass on offsets 120-159.
5 */
6
7 #include <stdio.h>
8 #include <stdint.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include <strings.h>
12 #include <gsm_efr.h>
13 #include <tw_amr.h>
14
15 extern uint16_t linear_input_array[480];
16
17 uint8_t amr_efr[160][31];
18
19 void
20 generate_amr_efr(void)
21 {
22 struct amr_encoder_state *st;
23 struct amr_param_frame amr_frame;
24 unsigned m;
25
26 st = amr_encoder_create(0, 0);
27 if (!st) {
28 fprintf(stderr, "error: amr_encoder_create() failed\n");
29 exit(1);
30 }
31 for (m = 0; m < 160; m++) {
32 amr_encoder_reset(st, 0, 0);
33 amr_encode_frame(st, MR122,
34 (const int16_t *) linear_input_array + 160 - m,
35 &amr_frame);
36 if (m >= 120) {
37 if (bcmp(amr_frame.param, amr_dhf_mr122,
38 EFR_NUM_PARAMS * sizeof(int16_t))) {
39 fprintf(stderr,
40 "MR122 DHF check failed on AMR-EFR first frame #%u\n",
41 m);
42 exit(1);
43 }
44 amr_encode_frame(st, MR122,
45 (const int16_t *) linear_input_array + 320 - m,
46 &amr_frame);
47 }
48 EFR_params2frame(amr_frame.param, amr_efr[m]);
49 }
50 free(st);
51 }