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annotate efrtest/decode-tw5-r.c @ 550:de333989a12b

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document gsm[e]fr-decode-tw5[-r] utilities
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 05 Oct 2024 02:16:48 +0000
parents 583dc4cbee95
children
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1 /*
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2 * This file is the main module for gsmefr-decode-tw5-r utility. It is just
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3 * like the original gsmefr-decode-r, but reads the GSM-EFR speech recording
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4 * from TW-TS-005 Annex A hexadecimal format instead of the old gsmx
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5 * binary format. The output format is robe, as indicated by the -r suffix.
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6 */
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7
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8 #include <stdio.h>
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9 #include <stdint.h>
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10 #include <stdlib.h>
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11 #include "../libgsmefr/gsm_efr.h"
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12 #include "../libtest/tw5reader.h"
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13 #include "../libtest/robewrite.h"
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15 main(argc, argv)
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16 char **argv;
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17 {
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18 FILE *hexf, *outf;
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19 unsigned lineno;
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20 struct EFR_decoder_state *state;
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21 uint8_t frame[TWTS005_MAX_FRAME];
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22 unsigned frame_len;
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23 int16_t pcm[160];
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24 int rc;
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26 if (argc != 3) {
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27 fprintf(stderr, "usage: %s input.hex output.robe\n", argv[0]);
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28 exit(1);
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29 }
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30 hexf = fopen(argv[1], "r");
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31 if (!hexf) {
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32 perror(argv[1]);
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33 exit(1);
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34 }
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35 lineno = 0;
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36 outf = fopen(argv[2], "w");
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37 if (!outf) {
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38 perror(argv[2]);
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39 exit(1);
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40 }
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41 state = EFR_decoder_create();
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42 if (!state) {
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43 perror("EFR_decoder_create()");
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44 exit(1);
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45 }
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46 for (;;) {
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47 rc = twts005_read_frame(hexf, &lineno, frame, &frame_len);
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48 if (rc < 0) {
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49 fprintf(stderr, "%s line %u: not valid TW-TS-005\n",
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50 argv[1], lineno);
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51 exit(1);
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52 }
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53 if (!rc)
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54 break;
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55 rc = EFR_decode_rtp(state, frame, frame_len, pcm);
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56 if (rc < 0) {
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57 fprintf(stderr,
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58 "%s line %u: not a valid GSM-EFR frame\n",
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59 argv[1], lineno);
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60 exit(1);
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61 }
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62 write_pcm_to_robe(outf, pcm);
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63 }
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64 fclose(outf);
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65 exit(0);
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66 }