FreeCalypso > hg > gsm-codec-lib

annotate miscutil/gsmx-to-tw5a.c @ 520:785b302992f0

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miscutil: new program gsmx-to-tw5a
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 19 Sep 2024 01:06:58 +0000
parents miscutil/gsmrec-dump.c@b5f8ea41362b
children 68fe269b4316
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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(frame, nbytes)
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20 uint8_t *frame;
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21 unsigned nbytes;
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22 {
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23 unsigned n;
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25 for (n = 0; n < nbytes; n++)
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26 printf("%02X", frame[n]);
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27 putchar('\n');
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28 }
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29
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30 main(argc, argv)
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31 char **argv;
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32 {
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33 FILE *binf, *outf;
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34 unsigned frame_index;
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35 uint8_t frame[BINFILE_MAX_FRAME];
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36 int rc;
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37
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38 if (argc != 3) {
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39 fprintf(stderr, "usage: %s input.gsmx output.hex\n", argv[0]);
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40 exit(1);
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41 }
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42 binf = fopen(argv[1], "r");
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43 if (!binf) {
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44 perror(argv[1]);
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45 exit(1);
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46 }
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47 if (strcmp(argv[2], "-")) {
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48 outf = fopen(argv[2], "w");
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49 if (!outf) {
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50 perror(argv[2]);
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51 exit(1);
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52 }
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53 } else
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54 outf = stdout;
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55 for (frame_index = 0; ; frame_index++) {
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56 rc = binfile_read_frame(binf, frame);
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57 if (rc < 0) {
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58 fprintf(stderr,
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59 "error: garbage in %s after %u frames\n",
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60 argv[1], frame_index);
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61 exit(1);
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62 }
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63 if (!rc)
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64 break;
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65 switch (frame[0] & 0xF0) {
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66 case 0xB0:
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67 printf("%02X\n", 0xE6 | frame[1] & 1);
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68 break;
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69 case 0xC0:
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70 emit_hex_frame(frame, EFR_RTP_FRAME_LEN);
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71 break;
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72 case 0xD0:
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73 emit_hex_frame(frame, GSMFR_RTP_FRAME_LEN);
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74 break;
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75 }
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76 }
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77 exit(0);
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78 }