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comparison frtest/decode-rb.c @ 296:e0d42e87da96

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frtest: new utility gsmfr-decode-rb
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 14 Apr 2024 20:36:29 +0000
parents frtest/decode-r.c@cfa3006a66da
children
comparison
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295:962861d46ccf 296:e0d42e87da96
1 /*
2 * gsmfr-decode-rb is a "raw basic" decoder: only the basic GSM 06.10 decoder
3 * is applied (no Rx DTX preprocessor), and the output format is raw BE.
4 */
5
6 #include <stdio.h>
7 #include <stdint.h>
8 #include <stdlib.h>
9 #include "../libgsmfr2/tw_gsmfr.h"
10 #include "../libtest/binreader.h"
11 #include "../libtest/robewrite.h"
12
13 main(argc, argv)
14 char **argv;
15 {
16 FILE *binf, *outf;
17 struct gsmfr_0610_state *dec_state;
18 uint8_t frame[BINFILE_MAX_FRAME];
19 int16_t pcm[160];
20 int rc;
21
22 if (argc != 3) {
23 fprintf(stderr, "usage: %s input.gsm output.robe\n", argv[0]);
24 exit(1);
25 }
26 binf = fopen(argv[1], "r");
27 if (!binf) {
28 perror(argv[1]);
29 exit(1);
30 }
31 outf = fopen(argv[2], "w");
32 if (!outf) {
33 perror(argv[2]);
34 exit(1);
35 }
36 dec_state = gsmfr_0610_create();
37 if (!dec_state) {
38 fprintf(stderr, "gsmfr_0610_create() failed!\n");
39 exit(1);
40 }
41 for (;;) {
42 rc = binfile_read_frame(binf, frame);
43 if (rc < 0) {
44 fprintf(stderr, "error: garbage in %s\n", argv[1]);
45 exit(1);
46 }
47 if (!rc)
48 break;
49 if (frame[0] == 0xBF) {
50 fprintf(stderr, "error: %s contains disallowed BFI\n",
51 argv[1]);
52 exit(1);
53 }
54 if ((frame[0] & 0xF0) != 0xD0) {
55 fprintf(stderr, "error: %s is not in FR codec format\n",
56 argv[1]);
57 exit(1);
58 }
59 gsmfr_0610_decode_frame(dec_state, frame, pcm);
60 write_pcm_to_robe(outf, pcm);
61 }
62 fclose(outf);
63 exit(0);
64 }