FreeCalypso > hg > gsm-codec-lib

annotate miscutil/raw2wav.c @ 485:751f06541fbb

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doc/Codec-utils: clarify lack of DHF in gsmfr-decode-rb
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 20 May 2024 01:47:22 +0000
parents c1dc094f0821
children
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c1dc094f0821 pcm16-raw2wav utility written
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1 /*
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2 * This program reads a 16-bit linear PCM speech recording in raw format
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3 * (either BE or LE) and converts it into WAV container format.
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4 */
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5
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6 #include <stdio.h>
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7 #include <stdint.h>
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8 #include <stdlib.h>
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9 #include <string.h>
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10 #include <strings.h>
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11 #include "../libtest/wavwriter.h"
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12
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13 static void
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14 swap_bytes(bytes, cc)
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15 uint8_t *bytes;
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16 unsigned cc;
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17 {
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18 uint8_t *dp, *endp;
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19 int t;
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20
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21 dp = bytes;
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22 endp = bytes + cc;
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23 while (dp < endp) {
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24 t = dp[0];
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25 dp[0] = dp[1];
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26 dp[1] = t;
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27 dp += 2;
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28 }
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29 }
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30
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31 main(argc, argv)
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32 char **argv;
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33 {
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34 int big_endian;
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35 FILE *binf;
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36 void *wav;
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37 uint8_t bytes[320];
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38 int cc;
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39
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40 if (argc != 4) {
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41 usage: fprintf(stderr, "usage: %s be|le input.raw output.wav\n",
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42 argv[0]);
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43 exit(1);
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44 }
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45 if (!strcmp(argv[1], "be"))
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46 big_endian = 1;
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47 else if (!strcmp(argv[1], "le"))
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48 big_endian = 0;
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49 else
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50 goto usage;
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51 binf = fopen(argv[2], "r");
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52 if (!binf) {
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53 perror(argv[2]);
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54 exit(1);
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55 }
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56 wav = wav_write_open(argv[3], 8000, 16, 1);
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57 if (!wav) {
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58 perror(argv[3]);
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59 exit(1);
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60 }
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61 for (;;) {
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62 cc = fread(bytes, 1, sizeof bytes, binf);
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63 if (cc <= 0)
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64 break;
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65 if (cc & 1) {
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66 fprintf(stderr, "error: %s has odd number of bytes\n",
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67 argv[2]);
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68 exit(1);
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69 }
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70 if (big_endian)
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71 swap_bytes(bytes, cc);
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72 wav_write_data(wav, bytes, cc);
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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 }