FreeCalypso > hg > gsm-codec-lib

annotate miscutil/gsmx-to-tw5a.c @ 538:4d596bfdf8d9

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frtest: new program gsmfr-decode-tw5-r
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 21 Sep 2024 23:58:27 +0000
parents 68fe269b4316
children 5595293e4f29
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1 /*
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2 * This program converts FR/EFR speech recordings from gsmx binary format
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3 * into more formally standardized TW-TS-005 Annex A format.
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4 *
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5 * FR and EFR frames are written in basic format (no TEH);
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6 * BFI marker records are converted into TW-TS-001 No_Data frames.
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7 */
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8
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9 #include <stdio.h>
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10 #include <stdint.h>
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11 #include <stdlib.h>
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12 #include <string.h>
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13 #include <strings.h>
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14 #include "../libgsmfr2/tw_gsmfr.h"
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15 #include "../libgsmefr/gsm_efr.h"
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16 #include "../libtest/binreader.h"
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17
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18 static void
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19 emit_hex_frame(outf, frame, nbytes)
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20 FILE *outf;
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21 uint8_t *frame;
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22 unsigned nbytes;
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23 {
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24 unsigned n;
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25
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26 for (n = 0; n < nbytes; n++)
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27 fprintf(outf, "%02X", frame[n]);
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28 putc('\n', outf);
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29 }
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30
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31 main(argc, argv)
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32 char **argv;
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33 {
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34 FILE *binf, *outf;
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35 unsigned frame_index;
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36 uint8_t frame[BINFILE_MAX_FRAME];
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37 int rc;
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38
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39 if (argc != 3) {
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40 fprintf(stderr, "usage: %s input.gsmx output.hex\n", argv[0]);
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41 exit(1);
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42 }
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43 binf = fopen(argv[1], "r");
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44 if (!binf) {
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45 perror(argv[1]);
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46 exit(1);
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47 }
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48 if (strcmp(argv[2], "-")) {
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49 outf = fopen(argv[2], "w");
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50 if (!outf) {
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51 perror(argv[2]);
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52 exit(1);
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53 }
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54 } else
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55 outf = stdout;
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56 for (frame_index = 0; ; frame_index++) {
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57 rc = binfile_read_frame(binf, frame);
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58 if (rc < 0) {
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59 fprintf(stderr,
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60 "error: garbage in %s after %u frames\n",
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61 argv[1], frame_index);
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62 exit(1);
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63 }
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64 if (!rc)
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65 break;
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66 switch (frame[0] & 0xF0) {
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67 case 0xB0:
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68 fprintf(outf, "%02X\n", 0xE6 | frame[1] & 1);
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69 break;
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70 case 0xC0:
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71 emit_hex_frame(outf, frame, EFR_RTP_FRAME_LEN);
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72 break;
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73 case 0xD0:
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74 emit_hex_frame(outf, frame, GSMFR_RTP_FRAME_LEN);
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75 break;
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76 }
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77 }
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78 exit(0);
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79 }