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annotate frtest/tfo-xfrm.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 b26df31124a4
children
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b26df31124a4 frtest: new program gsmfr-tfo-xfrm
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1 /*
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2 * This program exercises our ThemWi implementation of TFO transform for
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3 * GSM-FR. It reads a stream of radio leg A Rx frames from a TW-TS-005 Annex A
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4 * hex file and writes the "pristine" stream intended for radio leg B Tx
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5 * into another TW-TS-005 Annex A hex file. The output is in basic RTP format.
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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 "../libgsmfr2/tw_gsmfr.h"
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12 #include "../libtest/tw5reader.h"
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13 #include "../libtest/tw5writer.h"
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14
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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 char *infname, *outfname;
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19 FILE *inf, *outf;
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20 unsigned lineno;
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21 struct gsmfr_preproc_state *pp_state;
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22 uint8_t frame_in[TWTS005_MAX_FRAME], frame_out[GSMFR_RTP_FRAME_LEN];
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23 unsigned frame_in_len;
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24 int dtxd, rc;
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25
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26 if (argc == 3 && argv[1][0] != '-') {
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27 dtxd = 0;
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28 infname = argv[1];
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29 outfname = argv[2];
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30 } else if (argc == 4 && !strcmp(argv[1], "-d")) {
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31 dtxd = 1;
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32 infname = argv[2];
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33 outfname = argv[3];
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34 } else {
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35 fprintf(stderr, "usage: %s [-d] input.hex output.hex\n",
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36 argv[0]);
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37 exit(1);
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38 }
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39 inf = fopen(infname, "r");
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40 if (!inf) {
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41 perror(infname);
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42 exit(1);
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43 }
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44 lineno = 0;
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45 outf = fopen(outfname, "w");
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46 if (!outf) {
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47 perror(outfname);
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48 exit(1);
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49 }
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50 pp_state = gsmfr_preproc_create();
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51 if (!pp_state) {
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52 fprintf(stderr, "gsmfr_preproc_create() failed!\n");
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53 exit(1);
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54 }
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55 for (;;) {
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56 rc = twts005_read_frame(inf, &lineno, frame_in, &frame_in_len);
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57 if (rc < 0) {
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58 fprintf(stderr, "%s line %u: not valid TW-TS-005\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 if (!rc)
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63 break;
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64 rc = gsmfr_tfo_xfrm_main(pp_state, frame_in, frame_in_len,
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65 frame_out);
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66 if (rc < 0) {
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67 fprintf(stderr,
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68 "%s line %u: not a valid GSM-FR frame\n",
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69 argv[1], lineno);
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70 exit(1);
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71 }
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72 if (dtxd)
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73 gsmfr_tfo_xfrm_dtxd(pp_state, frame_out);
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74 emit_hex_frame(outf, frame_out, GSMFR_RTP_FRAME_LEN);
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75 }
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76 fclose(outf);
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77 exit(0);
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78 }