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annotate frtest/encode-r.c @ 478:936a08cc73ce

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doc/AMR-library-API: describe the decoder
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 19 May 2024 21:32:31 +0000
parents 962861d46ccf
children
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1 /*
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2 * gsmfr-encode-r is just like gsmfr-encode, but reads the source
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3 * linear PCM data to be encoded from a raw BE file ("robe")
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4 * instead of WAV.
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5 *
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6 * Addendum: gsmfr-encode-r -h flag enables the later-spec feature
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7 * of encoder homing. This option is not replicated in WAV-reading
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8 * gsmfr-encode because it is deemed to be of no use with WAV.
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9 */
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11 #include <stdio.h>
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12 #include <stdint.h>
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13 #include <stdlib.h>
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14 #include <string.h>
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15 #include <strings.h>
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16 #include "../libgsmfr2/tw_gsmfr.h"
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17 #include "../libtest/roberead.h"
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18
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19 main(argc, argv)
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20 char **argv;
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21 {
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22 char *infname, *outfname;
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23 FILE *inf, *binf;
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24 struct gsmfr_0610_state *enc_state;
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25 int16_t pcm[160];
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26 uint8_t frame[33];
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27 int homing, rc;
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28
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29 if (argc == 3 && argv[1][0] != '-') {
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30 homing = 0;
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31 infname = argv[1];
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32 outfname = argv[2];
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33 } else if (argc == 4 && !strcmp(argv[1], "-h")) {
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34 homing = 1;
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35 infname = argv[2];
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36 outfname = argv[3];
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37 } else {
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38 fprintf(stderr, "usage: %s [-h] input.robe output.gsm\n",
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39 argv[0]);
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40 exit(1);
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41 }
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42 inf = fopen(infname, "r");
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43 if (!inf) {
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44 perror(infname);
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45 exit(1);
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46 }
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47 binf = fopen(outfname, "w");
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48 if (!binf) {
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49 perror(outfname);
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50 exit(1);
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51 }
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52 enc_state = gsmfr_0610_create();
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53 if (!enc_state) {
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54 fprintf(stderr, "gsmfr_0610_create() failed!\n");
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55 exit(1);
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56 }
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57 for (;;) {
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58 rc = robe_get_pcm_block(inf, pcm);
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59 if (!rc)
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60 break;
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61 gsmfr_0610_encode_frame(enc_state, pcm, frame);
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62 if (homing)
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63 gsmfr_0610_encoder_homing(enc_state, pcm);
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64 fwrite(frame, 1, sizeof frame, binf);
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65 }
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66 fclose(binf);
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67 exit(0);
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68 }