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annotate hr-sid/misorder.c @ 50:0db059f4632d

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efr-sid OS#6538: more sensible 2-bit errors
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 12 Aug 2024 02:49:28 +0000
parents ee54b9748c09
children
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ee54b9748c09 hr-sid: add conversion of misordered SID field
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1 /*
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2 * swSidDetection() in reid.c in GSM 06.06 source contains a table
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3 * that identifies the 79 bits of the SID field when they got misordered
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4 * as a result of decoding in unvoiced mode. That table is given
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5 * in the form of an array of 18 codec params. We need the same mask
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6 * of misordered SID field bits in the packed format of TS 101 318.
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7 * This program performs the conversion.
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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
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14 static const int16_t misordered_sid_params[18] = {
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15 0x0001, /* R0 */ /* unvoiced */
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16 0x00ef, /* LPC1 */
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17 0x003e, /* LPC2 */
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18 0x007f, /* LPC3 */
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19 0x0001, /* INT LPC */
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20 0x0003, /* Mode */
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21 0x001f, /* Code1_1 */
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22 0x0072, /* Code2_1 */
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23 0x0012, /* GSP0_1 */
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24 0x003f, /* Code1_2 */
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25 0x007f, /* Code2_2 */
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26 0x0008, /* GSP0_2 */
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27 0x007f, /* Code1_3 */
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28 0x007f, /* Code2_3 */
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29 0x0008, /* GSP0_3 */
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30 0x007f, /* Code1_4 */
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31 0x007f, /* Code2_4 */
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32 0x000c, /* GSP0_4 */
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33 };
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34
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35 void
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36 pack_ts101318_unvoiced(params, payload)
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37 const int16_t *params;
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38 uint8_t *payload;
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39 {
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40 uint8_t *c = payload;
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41
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42 /* unvoiced mode */
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43 *c++ = ((params[0] & 0x1F) << 3)
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44 | ((params[1] >> 8) & 0x7);
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45 *c++ = params[1] & 0xFF;
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46 *c++ = ((params[2] >> 1) & 0xFF);
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47 *c++ = ((params[2] & 0x1) << 7)
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48 | ((params[3] >> 1) & 0x7F);
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49 *c++ = ((params[3] & 0x1) << 7)
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50 | ((params[4] & 0x1) << 6)
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51 | ((params[5] & 0x3) << 4)
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52 | ((params[6] >> 3) & 0xF);
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53 *c++ = ((params[6] & 0x7) << 5)
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54 | ((params[7] >> 2) & 0x1F);
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55 *c++ = ((params[7] & 0x3) << 6)
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56 | ((params[8] & 0x1F) << 1)
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57 | ((params[9] >> 6) & 0x1);
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58 *c++ = ((params[9] & 0x3F) << 2)
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59 | ((params[10] >> 5) & 0x3);
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60 *c++ = ((params[10] & 0x1F) << 3)
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61 | ((params[11] >> 2) & 0x7);
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62 *c++ = ((params[11] & 0x3) << 6)
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63 | ((params[12] >> 1) & 0x3F);
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64 *c++ = ((params[12] & 0x1) << 7)
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65 | (params[13] & 0x7F);
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66 *c++ = ((params[14] & 0x1F) << 3)
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67 | ((params[15] >> 4) & 0x7);
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68 *c++ = ((params[15] & 0xF) << 4)
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69 | ((params[16] >> 3) & 0xF);
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70 *c++ = ((params[16] & 0x7) << 5)
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71 | (params[17] & 0x1F);
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72 }
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73
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74 main(argc, argv)
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75 char **argv;
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76 {
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77 uint8_t packed_frame[14];
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78 int i;
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79
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80 pack_ts101318_unvoiced(misordered_sid_params, packed_frame);
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81 for (i = 0; i < 14; i++) {
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82 printf("0x%02X,", packed_frame[i]);
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83 if (i == 6 || i == 13)
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84 putchar('\n');
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85 else
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86 putchar(' ');
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87 }
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88 exit(0);
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89 }