FreeCalypso > hg > gsm-codec-lib
annotate efrtest/rec2etsi.c @ 65:cb080ec1817e
libgsmefr: dec_lag6.c compiles
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 26 Nov 2022 02:50:06 +0000 |
parents | 89945a3b576e |
children | bd832a456339 |
rev | line source |
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1 /* |
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2 * This program reads in an EFR session recording in our binary format |
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3 * (presumably obtained by converting from an RTP capture on the network |
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4 * side or from a Calypso DSP readout on the mobile side) and converts |
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5 * it into ETSI *.dec format, to be fed to ETSI decoder test program. |
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6 * |
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7 * The output from this program is in the local machine's native byte order. |
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8 */ |
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9 |
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10 #include <stdio.h> |
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11 #include <stdint.h> |
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12 #include <stdlib.h> |
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13 #include <string.h> |
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14 #include <strings.h> |
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15 #include "../libgsmefr/gsm_efr.h" |
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16 #include "../libtest/binreader.h" |
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17 |
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18 static void |
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19 frame2bits(frame, bits) |
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20 uint8_t *frame; |
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21 uint16_t *bits; |
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22 { |
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23 unsigned nb, byte, mask, bit; |
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24 |
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25 for (nb = 0; nb < 31; nb++) { |
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26 byte = *frame++; |
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27 for (mask = 0x80; mask; mask >>= 1) { |
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28 if (byte & mask) |
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29 bit = 1; |
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30 else |
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31 bit = 0; |
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32 *bits++ = bit; |
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33 } |
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34 } |
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35 } |
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36 |
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37 main(argc, argv) |
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38 char **argv; |
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39 { |
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40 FILE *binf, *outf; |
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41 uint8_t frame[BINFILE_MAX_FRAME]; |
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42 uint16_t bits[250]; |
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43 int rc; |
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44 |
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45 if (argc != 3) { |
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46 fprintf(stderr, "usage: %s input.rec output.dec\n", argv[0]); |
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47 exit(1); |
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48 } |
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49 binf = fopen(argv[1], "r"); |
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50 if (!binf) { |
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51 perror(argv[1]); |
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52 exit(1); |
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53 } |
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54 outf = fopen(argv[2], "w"); |
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55 if (!outf) { |
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56 perror(argv[2]); |
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57 exit(1); |
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58 } |
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59 for (;;) { |
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60 rc = binfile_read_frame(binf, frame); |
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61 if (rc < 0) { |
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62 fprintf(stderr, "error: garbage in %s\n", argv[1]); |
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63 exit(1); |
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64 } |
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65 if (!rc) |
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66 break; |
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67 if (frame[0] == 0xBF) { |
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68 bits[3] = 1; /* BFI */ |
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69 bzero(bits + 4, 245 * 2); |
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70 bits[249] = frame[1] & 1; /* TAF */ |
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71 } else if ((frame[0] & 0xF0) == 0xC0) { |
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72 frame2bits(frame, bits); |
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73 bits[248] = EFR_sid_classify(frame); |
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74 bits[249] = 0; /* TAF */ |
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75 } else { |
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76 fprintf(stderr, |
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77 "error: %s is not in EFR codec format\n", |
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78 argv[1]); |
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79 exit(1); |
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80 } |
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81 fwrite(bits + 3, 2, 247, outf); |
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82 } |
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83 fclose(outf); |
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84 exit(0); |
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85 } |