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comparison hrutil/decode-r.c @ 608:d4e42ec4a688 default tip

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hrutil: new program gsmhr-decode-r
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 05 Dec 2025 09:01:14 +0000
parents hrutil/decode.c@cdf3f5c618b8
children
comparison
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607:cdf3f5c618b8 608:d4e42ec4a688
1 /*
2 * This file is the main module for gsmhr-decode-r utility. This utility
3 * is intended to serve as a precision tinkering-oriented decoder for
4 * GSM-HR encoded speech, reading TW-TS-005 Annex B as input and emitting
5 * 16-bit linear PCM output in robe format.
6 */
7
8 #include <stdio.h>
9 #include <stdint.h>
10 #include <stdlib.h>
11 #include "../libgsmhr1/tw_gsmhr.h"
12 #include "../libtest/tw5reader.h"
13 #include "../libtest/robewrite.h"
14
15 main(argc, argv)
16 char **argv;
17 {
18 FILE *hexf, *outf;
19 unsigned lineno;
20 struct gsmhr_decoder_state *state;
21 uint8_t frame[TWTS005_MAX_FRAME];
22 unsigned frame_len;
23 int16_t params[GSMHR_NUM_PARAMS_DEC];
24 int16_t pcm[160];
25 int rc;
26
27 if (argc != 3) {
28 fprintf(stderr, "usage: %s input.hex output.robe\n", argv[0]);
29 exit(1);
30 }
31 hexf = fopen(argv[1], "r");
32 if (!hexf) {
33 perror(argv[1]);
34 exit(1);
35 }
36 lineno = 0;
37 outf = fopen(argv[2], "w");
38 if (!outf) {
39 perror(argv[2]);
40 exit(1);
41 }
42 state = gsmhr_decoder_create();
43 if (!state) {
44 fprintf(stderr, "gsmhr_decoder_create() failed!\n");
45 exit(1);
46 }
47 for (;;) {
48 rc = twts005_read_frame(hexf, &lineno, frame, &frame_len);
49 if (rc < 0) {
50 fprintf(stderr, "%s line %u: not valid TW-TS-005\n",
51 argv[1], lineno);
52 exit(1);
53 }
54 if (!rc)
55 break;
56 rc = gsmhr_rtp_in_direct(frame, frame_len, params);
57 if (rc < 0) {
58 fprintf(stderr,
59 "%s line %u: not a valid GSM-HR frame\n",
60 argv[1], lineno);
61 exit(1);
62 }
63 gsmhr_decode_frame(state, params, pcm);
64 write_pcm_to_robe(outf, pcm);
65 }
66 fclose(outf);
67 exit(0);
68 }