FreeCalypso > hg > gsm-codec-lib

annotate frtest/decode.c @ 194:f151d6c18b31

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libgsmefr/enc_lag6.c: perf opt
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 04 Jan 2023 03:36:39 +0000
parents b9a842775f40
children 8d3cfa65a6c2
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1 /*
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2 * This file is the main module for gsmfr-decode utility.
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3 */
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4
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5 #include <stdio.h>
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6 #include <stdint.h>
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7 #include <stdlib.h>
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8 #include <gsm.h>
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9 #include "../libgsmfrp/gsm_fr_preproc.h"
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10 #include "../libtest/binreader.h"
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11 #include "../libtest/wavwriter.h"
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12 #include "../libtest/pcmwrite.h"
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13
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14 main(argc, argv)
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15 char **argv;
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16 {
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17 FILE *binf;
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18 void *wav;
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19 gsm dec_state;
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20 struct gsmfr_preproc_state *pp_state;
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21 uint8_t frame[BINFILE_MAX_FRAME];
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22 int16_t pcm[160];
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23 int rc, bfi, taf;
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24
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25 if (argc != 3) {
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26 fprintf(stderr, "usage: %s input.gsm output.wav\n", argv[0]);
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27 exit(1);
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28 }
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29 binf = fopen(argv[1], "r");
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30 if (!binf) {
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31 perror(argv[1]);
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32 exit(1);
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33 }
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34 wav = wav_write_open(argv[2], 8000, 16, 1);
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35 if (!wav) {
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36 perror(argv[2]);
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37 exit(1);
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38 }
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39 dec_state = gsm_create();
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40 if (!dec_state) {
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41 fprintf(stderr, "gsm_create() failed!\n");
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42 exit(1);
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43 }
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44 pp_state = gsmfr_preproc_create();
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45 if (!pp_state) {
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46 fprintf(stderr, "gsmfr_preproc_create() failed!\n");
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47 exit(1);
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48 }
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49 for (;;) {
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50 rc = binfile_read_frame(binf, frame);
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51 if (rc < 0) {
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52 fprintf(stderr, "error: garbage in %s\n", argv[1]);
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53 exit(1);
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54 }
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55 if (!rc)
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56 break;
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57 if (frame[0] == 0xBF) {
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58 bfi = 1;
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59 taf = frame[1] & 1;
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60 } else if ((frame[0] & 0xF0) == 0xD0)
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61 bfi = 0;
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62 else {
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63 fprintf(stderr, "error: %s is not in FR codec format\n",
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64 argv[1]);
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65 exit(1);
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66 }
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67 if (bfi)
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68 gsmfr_preproc_bfi(pp_state, taf, frame);
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69 else
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70 gsmfr_preproc_good_frame(pp_state, frame);
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71 gsm_decode(dec_state, frame, pcm);
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72 write_pcm_to_wav(wav, pcm);
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73 }
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74 wav_write_close(wav);
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75 exit(0);
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76 }