annotate amrtest/tseq-dec.c @ 485:751f06541fbb

doc/Codec-utils: clarify lack of DHF in gsmfr-decode-rb
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 20 May 2024 01:47:22 +0000
parents edbbbf1c4ab1
children
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1 /*
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2 * twamr-tseq-dec is a test program for our AMR decoder: it reads
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3 * 3GPP AMR *.cod files as input and writes 16-bit linear PCM (raw)
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4 * files as output, allowing libtwamr decoder to be tested with the
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5 * official test sequences.
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6 *
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7 * Both input and output are read/written in the host machine's
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8 * native byte order.
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9 */
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10
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11 #include <stdio.h>
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12 #include <stdint.h>
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13 #include <stdlib.h>
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14 #include <string.h>
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15 #include <strings.h>
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16 #include <unistd.h>
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17 #include "../libtwamr/tw_amr.h"
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18
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19 static int
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20 read_input(inf, cod, filename_for_errs)
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21 FILE *inf;
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22 uint16_t *cod;
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23 char *filename_for_errs;
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24 {
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25 int cc;
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26
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27 cc = fread(cod, 2, AMR_COD_WORDS, inf);
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28 if (cc == 0)
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29 return 0;
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30 if (cc != AMR_COD_WORDS) {
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31 fprintf(stderr, "error: short read from %s\n",
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32 filename_for_errs);
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33 exit(1);
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34 }
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35 return 1;
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36 }
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37
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38 main(argc, argv)
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39 char **argv;
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40 {
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41 char *infname, *outfname;
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42 FILE *inf, *outf;
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43 struct amr_decoder_state *state;
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44 uint16_t cod[AMR_COD_WORDS];
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45 struct amr_param_frame frame;
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46 int16_t pcm[160];
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47 int opt, use_rxtype = 0, rc;
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48 unsigned frame_no;
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49 extern int optind;
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50
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51 while ((opt = getopt(argc, argv, "r")) != EOF) {
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52 switch (opt) {
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53 case 'r':
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54 use_rxtype = 1;
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55 continue;
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56 default:
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57 usage:
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58 fprintf(stderr, "usage: %s [-r] input.cod output.out\n",
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59 argv[0]);
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60 exit(1);
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61 }
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62 }
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63 if (argc != optind + 2)
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64 goto usage;
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65 infname = argv[optind];
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66 outfname = argv[optind+1];
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67
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68 inf = fopen(infname, "r");
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69 if (!inf) {
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70 perror(infname);
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71 exit(1);
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72 }
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73 outf = fopen(outfname, "w");
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74 if (!outf) {
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75 perror(outfname);
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76 exit(1);
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77 }
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78 state = amr_decoder_create();
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79 if (!state) {
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80 perror("amr_decoder_create()");
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81 exit(1);
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82 }
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83 for (frame_no = 0; ; frame_no++) {
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84 rc = read_input(inf, cod, infname);
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85 if (!rc)
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86 break;
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87 rc = amr_frame_from_tseq(cod, use_rxtype, &frame);
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88 if (rc < 0) {
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89 fprintf(stderr,
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90 "error in %s frame %u: amr_frame_from_tseq() returned %d\n",
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91 infname, frame_no, rc);
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92 exit(1);
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93 }
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94 amr_decode_frame(state, &frame, pcm);
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95 fwrite(pcm, 2, 160, outf);
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96 }
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97 fclose(outf);
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98 exit(0);
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99 }