FreeCalypso > hg > gsm-codec-lib

annotate efrtest/decode.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 d5bab777865a
children
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1 /*
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2 * This file is the main module for gsmefr-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 "../libgsmefr/gsm_efr.h"
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9 #include "../libtest/binreader.h"
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10 #include "../libtest/wavwriter.h"
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11 #include "../libtest/pcmwrite.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 *binf;
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17 void *wav;
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18 struct EFR_decoder_state *state;
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19 uint8_t frame[BINFILE_MAX_FRAME];
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20 int16_t pcm[160];
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21 int rc, bfi, taf;
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23 if (argc != 3) {
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24 fprintf(stderr, "usage: %s input.gsmx output.wav\n", argv[0]);
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25 exit(1);
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26 }
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27 binf = fopen(argv[1], "r");
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28 if (!binf) {
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29 perror(argv[1]);
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30 exit(1);
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31 }
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32 wav = wav_write_open(argv[2], 8000, 16, 1);
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33 if (!wav) {
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34 perror(argv[2]);
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35 exit(1);
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36 }
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37 state = EFR_decoder_create();
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38 if (!state) {
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39 perror("EFR_decoder_create()");
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40 exit(1);
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41 }
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42 for (;;) {
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43 rc = binfile_read_frame(binf, frame);
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44 if (rc < 0) {
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45 fprintf(stderr, "error: garbage in %s\n", argv[1]);
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46 exit(1);
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47 }
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48 if (!rc)
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49 break;
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50 if (frame[0] == 0xBF) {
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51 bfi = 1;
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52 taf = frame[1] & 1;
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53 } else if ((frame[0] & 0xF0) == 0xC0)
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54 bfi = 0;
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55 else {
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56 fprintf(stderr,
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57 "error: %s is not in EFR codec format\n",
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58 argv[1]);
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59 exit(1);
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60 }
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61 if (bfi)
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62 EFR_decode_bfi_nodata(state, taf, pcm);
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63 else
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64 EFR_decode_frame(state, frame, 0, 0, pcm);
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65 write_pcm_to_wav(wav, pcm);
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66 }
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67 wav_write_close(wav);
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68 exit(0);
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69 }