FreeCalypso > hg > gsm-codec-lib

annotate frtest/preproc.c @ 455:287063b9cf43

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CHANGES: document the build process change
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 10 May 2024 06:22:42 +0000
parents 18229558c8bf
children
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1 /*
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2 * This utility reads an extended-libgsm file that may contain SID frames
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3 * and BFI markers, passes it through our preprocessor and writes out
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4 * pure libgsm frames.
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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 "../libgsmfr2/tw_gsmfr.h"
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11 #include "../libtest/binreader.h"
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13 main(argc, argv)
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14 char **argv;
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15 {
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16 FILE *bini, *bino;
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17 struct gsmfr_preproc_state *pp_state;
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18 uint8_t frame[BINFILE_MAX_FRAME];
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19 int rc, bfi, taf;
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21 if (argc != 3) {
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22 fprintf(stderr, "usage: %s input.gsmx output.gsm\n", argv[0]);
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23 exit(1);
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24 }
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25 bini = fopen(argv[1], "r");
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26 if (!bini) {
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27 perror(argv[1]);
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28 exit(1);
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29 }
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30 bino = fopen(argv[2], "w");
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31 if (!bino) {
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32 perror(argv[2]);
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33 exit(1);
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34 }
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35 pp_state = gsmfr_preproc_create();
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36 if (!pp_state) {
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37 fprintf(stderr, "gsmfr_preproc_create() failed!\n");
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38 exit(1);
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39 }
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40 for (;;) {
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41 rc = binfile_read_frame(bini, frame);
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42 if (rc < 0) {
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43 fprintf(stderr, "error: garbage in %s\n", argv[1]);
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44 exit(1);
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45 }
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46 if (!rc)
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47 break;
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48 if (frame[0] == 0xBF) {
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49 bfi = 1;
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50 taf = frame[1] & 1;
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51 } else if ((frame[0] & 0xF0) == 0xD0)
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52 bfi = 0;
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53 else {
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54 fprintf(stderr, "error: %s is not in FR codec format\n",
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55 argv[1]);
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56 exit(1);
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57 }
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58 if (bfi)
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59 gsmfr_preproc_bfi(pp_state, taf, frame);
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60 else
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61 gsmfr_preproc_good_frame(pp_state, frame);
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62 fwrite(frame, 1, 33, bino);
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63 }
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64 fclose(bino);
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65 exit(0);
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66 }