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comparison ae-dec-dhf/gen-test-frames.c @ 39:ab7c80f6f02d

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ae-dec-dhf: initial generation
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 14 May 2024 08:13:01 +0000
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38:e96e8d8973c0 39:ab7c80f6f02d
1 /*
2 * This program generates some test EFR frames that are meant to be fed
3 * to the uplink input of the alien GSM network under study, seeking to
4 * test if the AMR-EFR hybrid decoder's handling of DHF matches our model.
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 static FILE *outf;
16
17 static void
18 emit_mr122_dhf()
19 {
20 uint8_t frame[EFR_RTP_FRAME_LEN];
21
22 EFR_params2frame(amr_dhf_mr122, frame);
23 fwrite(frame, 1, EFR_RTP_FRAME_LEN, outf);
24 }
25
26 static void
27 emit_mixed_dhf()
28 {
29 int16_t params[EFR_NUM_PARAMS];
30 uint8_t frame[EFR_RTP_FRAME_LEN];
31
32 memcpy(params, amr_dhf_gsmefr, sizeof(int16_t) * 18);
33 memcpy(params + 18, amr_dhf_mr122 + 18, sizeof(int16_t) * 39);
34 EFR_params2frame(params, frame);
35 fwrite(frame, 1, EFR_RTP_FRAME_LEN, outf);
36 }
37
38 main(argc, argv)
39 char **argv;
40 {
41 if (argc != 2) {
42 fprintf(stderr, "usage: %s gsmx-out-file\n", argv[0]);
43 exit(1);
44 }
45 outf = fopen(argv[1], "w");
46 if (!outf) {
47 perror(argv[1]);
48 exit(1);
49 }
50 emit_mr122_dhf();
51 emit_mr122_dhf();
52 emit_mixed_dhf();
53 fwrite(EFR_decoder_homing_frame, 1, EFR_RTP_FRAME_LEN, outf);
54 emit_mixed_dhf();
55 emit_mixed_dhf();
56 emit_mr122_dhf();
57 fclose(outf);
58 exit(0);
59 }