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comparison frtest/decode.c @ 12:f88817a233fb

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gsmfr-decode test program written
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 20 Nov 2022 00:44:26 +0000
parents
children b9a842775f40
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11:a3aa152c4653 12:f88817a233fb
1 /*
2 * This file is the main module for gsmfr-decode utility.
3 */
4
5 #include <stdio.h>
6 #include <stdint.h>
7 #include <stdlib.h>
8 #include <gsm.h>
9 #include "../libgsmfrp/gsm_fr_preproc.h"
10 #include "../libtest/binreader.h"
11 #include "../libtest/wavwriter.h"
12 #include "../libtest/pcmwrite.h"
13
14 main(argc, argv)
15 char **argv;
16 {
17 FILE *binf;
18 void *wav;
19 gsm dec_state;
20 struct gsmfr_preproc_state *pp_state;
21 uint8_t frame[BINFILE_MAX_FRAME];
22 int16_t pcm[160];
23 int rc, bfi, taf;
24
25 if (argc != 3) {
26 fprintf(stderr, "usage: %s input.gsm output.wav\n", argv[0]);
27 exit(1);
28 }
29 binf = fopen(argv[1], "r");
30 if (!binf) {
31 perror(argv[1]);
32 exit(1);
33 }
34 wav = wav_write_open(argv[2], 8000, 16, 1);
35 if (!wav) {
36 perror(argv[2]);
37 exit(1);
38 }
39 dec_state = gsm_create();
40 if (!dec_state) {
41 fprintf(stderr, "gsm_create() failed!\n");
42 exit(1);
43 }
44 pp_state = gsmfr_preproc_create();
45 if (!pp_state) {
46 fprintf(stderr, "gsmfr_preproc_create() failed!\n");
47 exit(1);
48 }
49 for (;;) {
50 rc = binfile_read_frame(binf, frame);
51 if (rc < 0) {
52 fprintf(stderr, "error: garbage in %s\n", argv[1]);
53 exit(1);
54 }
55 if (!rc)
56 break;
57 if (frame[0] == 0xBF) {
58 bfi = 1;
59 taf = frame[1] & 1;
60 } else if ((frame[0] & 0xF0) == 0xD)
61 bfi = 0;
62 else {
63 fprintf(stderr, "error: %s is not in FR codec format\n",
64 argv[1]);
65 exit(1);
66 }
67 if (bfi)
68 gsmfr_preproc_bfi(pp_state, taf, frame);
69 else
70 gsmfr_preproc_good_frame(pp_state, frame);
71 gsm_decode(dec_state, frame, pcm);
72 write_pcm_to_wav(wav, pcm);
73 }
74 wav_write_close(wav);
75 exit(0);
76 }