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comparison amrtest/decode-r.c @ 446:e2f824ffd08a

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amrtest: implement twamr-decode-r
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 10 May 2024 00:30:39 +0000
parents amrtest/decode.c@fe4983b05230
children
comparison
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445:30cff6b60890 446:e2f824ffd08a
1 /*
2 * twamr-decode-r is a speech decoder utility going from *.amr input
3 * to "robe" (raw BE) output.
4 */
5
6 #include <stdio.h>
7 #include <stdint.h>
8 #include <stdlib.h>
9 #include <string.h>
10 #include <strings.h>
11 #include "../libtwamr/tw_amr.h"
12 #include "../libtest/robewrite.h"
13
14 main(argc, argv)
15 char **argv;
16 {
17 FILE *inf, *outf;
18 uint8_t frm_in[AMR_IETF_MAX_PL];
19 struct amr_decoder_state *state;
20 struct amr_param_frame frame;
21 int16_t pcm[160];
22 int rc;
23
24 if (argc != 3) {
25 fprintf(stderr, "usage: %s input.amr output.robe\n", argv[0]);
26 exit(1);
27 }
28 inf = fopen(argv[1], "r");
29 if (!inf) {
30 perror(argv[1]);
31 exit(1);
32 }
33 if (fread(frm_in, 1, AMR_IETF_HDR_LEN, inf) != AMR_IETF_HDR_LEN ||
34 bcmp(frm_in, amr_file_header_magic, AMR_IETF_HDR_LEN)) {
35 fprintf(stderr, "error: %s is not in IETF AMR format\n",
36 argv[1]);
37 exit(1);
38 }
39 outf = fopen(argv[2], "w");
40 if (!outf) {
41 perror(argv[2]);
42 exit(1);
43 }
44 state = amr_decoder_create();
45 if (!state) {
46 perror("amr_decoder_create()");
47 exit(1);
48 }
49 for (;;) {
50 rc = getc(inf);
51 if (rc < 0)
52 break;
53 frm_in[0] = rc;
54 rc = amr_ietf_grok_first_octet(frm_in[0]);
55 if (rc < 0) {
56 inv: fprintf(stderr, "error: %s contains invalid AMR data\n",
57 argv[1]);
58 exit(1);
59 }
60 if (rc && fread(frm_in+1, 1, rc, inf) != rc)
61 goto inv;
62 amr_frame_from_ietf(frm_in, &frame);
63 amr_decode_frame(state, &frame, pcm);
64 write_pcm_to_robe(outf, pcm);
65 }
66 fclose(outf);
67 exit(0);
68 }