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annotate amrtest/tseq-enc.c @ 481:cc0c244bd233

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doc/AMR-library-tests: new article
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 20 May 2024 01:02:37 +0000
parents cf90077b753c
children
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1 /*
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2 * twamr-tseq-enc is a test program for our AMR encoder: it reads raw
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3 * 16-bit PCM (matching 3GPP *.inp) as input and writes 3GPP *.cod
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4 * format as output, allowing libtwamr encoder 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, pcm, filename_for_errs)
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21 FILE *inf;
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22 int16_t *pcm;
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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(pcm, 2, 160, inf);
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28 if (cc == 0)
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29 return 0;
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30 if (cc < 160) {
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31 fprintf(stderr, "warning: incomplete frame at the end of %s\n",
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32 filename_for_errs);
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33 return 0;
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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, *mode_arg;
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42 FILE *inf, *outf;
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43 struct amr_encoder_state *state;
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44 enum Mode mode_val;
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45 int16_t pcm[160];
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46 struct amr_param_frame frame;
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47 uint16_t cod_words[AMR_COD_WORDS];
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48 int opt, dtx = 0, vad2 = 0, use_mode_file = 0, rc;
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49 extern int optind;
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50
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51 while ((opt = getopt(argc, argv, "d2")) != EOF) {
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52 switch (opt) {
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53 case 'd':
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54 dtx = 1;
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55 continue;
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56 case '2':
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57 vad2 = 1;
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58 continue;
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59 default:
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60 usage:
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61 fprintf(stderr,
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62 "usage: %s [-d] [-2] input.inp mode output.cod\n",
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63 argv[0]);
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64 exit(1);
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65 }
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66 }
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67 if (argc != optind + 3)
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68 goto usage;
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69 infname = argv[optind];
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70 mode_arg = argv[optind+1];
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71 outfname = argv[optind+2];
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72
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73 inf = fopen(infname, "r");
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74 if (!inf) {
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75 perror(infname);
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76 exit(1);
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77 }
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78 if (!strncmp(mode_arg, "file:", 5)) {
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79 open_mode_file(mode_arg + 5);
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80 use_mode_file = 1;
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81 } else {
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82 rc = grok_mode_name(mode_arg, &mode_val);
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83 if (rc < 0) {
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84 fprintf(stderr, "error: invalid mode argument \"%s\"\n",
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85 mode_arg);
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86 exit(1);
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87 }
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88 }
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89 outf = fopen(outfname, "w");
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90 if (!outf) {
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91 perror(outfname);
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92 exit(1);
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93 }
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94 state = amr_encoder_create(dtx, vad2);
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95 if (!state) {
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96 perror("amr_encoder_create()");
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97 exit(1);
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98 }
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99 for (;;) {
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100 rc = read_input(inf, pcm, infname);
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101 if (!rc)
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102 break;
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103 if (use_mode_file)
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104 read_mode_file_line(&mode_val);
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105 amr_encode_frame(state, mode_val, pcm, &frame);
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106 amr_frame_to_tseq(&frame, cod_words);
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107 fwrite(cod_words, 2, AMR_COD_WORDS, outf);
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108 }
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109 fclose(outf);
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110 exit(0);
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111 }