FreeCalypso > hg > vband-misc

annotate ae-dec-dhf/gen-test-frames.c @ 42:982169986a14

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efr-sid: starting with dtx01-frame71.cod as good SID
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 09 Jun 2024 05:28:22 +0000
parents ab7c80f6f02d
children
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39
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Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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2 * This program generates some test EFR frames that are meant to be fed
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3 * to the uplink input of the alien GSM network under study, seeking to
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4 * test if the AMR-EFR hybrid decoder's handling of DHF matches our model.
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5 */
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6
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7 #include <stdio.h>
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8 #include <stdint.h>
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9 #include <stdlib.h>
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10 #include <string.h>
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11 #include <strings.h>
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12 #include <gsm_efr.h>
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13 #include <tw_amr.h>
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14
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15 static FILE *outf;
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16
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17 static void
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18 emit_mr122_dhf()
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19 {
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20 uint8_t frame[EFR_RTP_FRAME_LEN];
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21
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22 EFR_params2frame(amr_dhf_mr122, frame);
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23 fwrite(frame, 1, EFR_RTP_FRAME_LEN, outf);
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24 }
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25
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26 static void
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27 emit_mixed_dhf()
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28 {
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29 int16_t params[EFR_NUM_PARAMS];
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30 uint8_t frame[EFR_RTP_FRAME_LEN];
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31
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32 memcpy(params, amr_dhf_gsmefr, sizeof(int16_t) * 18);
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33 memcpy(params + 18, amr_dhf_mr122 + 18, sizeof(int16_t) * 39);
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34 EFR_params2frame(params, frame);
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35 fwrite(frame, 1, EFR_RTP_FRAME_LEN, outf);
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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 if (argc != 2) {
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42 fprintf(stderr, "usage: %s gsmx-out-file\n", argv[0]);
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43 exit(1);
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44 }
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45 outf = fopen(argv[1], "w");
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46 if (!outf) {
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47 perror(argv[1]);
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48 exit(1);
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49 }
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50 emit_mr122_dhf();
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51 emit_mr122_dhf();
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52 emit_mixed_dhf();
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53 fwrite(EFR_decoder_homing_frame, 1, EFR_RTP_FRAME_LEN, outf);
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54 emit_mixed_dhf();
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55 emit_mixed_dhf();
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56 emit_mr122_dhf();
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57 fclose(outf);
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58 exit(0);
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59 }