FreeCalypso > hg > gsm-codec-lib

annotate libgsmefr/params2frame.c @ 534:516e84085a15

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libgsmfr2 is now at version 2.1.0
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 20 Sep 2024 00:17:35 +0000
parents 88468d5b3590
children
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88468d5b3590 libgsmefr: implement frame packing
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1 /*
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2 * In this module we implement our EFR_params2frame() packing function.
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3 */
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4
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5 #include "gsm_efr.h"
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6
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7 #define EFR_MAGIC 0xC
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8
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9 void EFR_params2frame(const int16_t *params, uint8_t *frame)
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10 {
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11 uint8_t *c = frame;
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12
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13 *c++ = ((EFR_MAGIC & 0xF) << 4)
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14 | ((params[0] >> 3) & 0xF);
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15 *c++ = ((params[0] & 0x7) << 5)
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16 | ((params[1] >> 3) & 0x1F);
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17 *c++ = ((params[1] & 0x7) << 5)
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18 | ((params[2] >> 4) & 0x1F);
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19 *c++ = ((params[2] & 0xF) << 4)
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20 | ((params[3] >> 4) & 0xF);
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21 *c++ = ((params[3] & 0xF) << 4)
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22 | ((params[4] >> 2) & 0xF);
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23 *c++ = ((params[4] & 0x3) << 6)
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24 | ((params[5] >> 3) & 0x3F);
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25 *c++ = ((params[5] & 0x7) << 5)
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26 | ((params[6] & 0xF) << 1)
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27 | ((params[7] >> 3) & 0x1);
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28 *c++ = ((params[7] & 0x7) << 5)
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29 | ((params[8] & 0xF) << 1)
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30 | ((params[9] >> 3) & 0x1);
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31 *c++ = ((params[9] & 0x7) << 5)
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32 | ((params[10] & 0xF) << 1)
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33 | ((params[11] >> 3) & 0x1);
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34 *c++ = ((params[11] & 0x7) << 5)
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35 | ((params[12] & 0x7) << 2)
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36 | ((params[13] >> 1) & 0x3);
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37 *c++ = ((params[13] & 0x1) << 7)
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38 | ((params[14] & 0x7) << 4)
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39 | ((params[15] & 0x7) << 1)
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40 | ((params[16] >> 2) & 0x1);
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41 *c++ = ((params[16] & 0x3) << 6)
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42 | ((params[17] & 0x1F) << 1)
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43 | ((params[18] >> 5) & 0x1);
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44 *c++ = ((params[18] & 0x1F) << 3)
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45 | ((params[19] >> 1) & 0x7);
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46 *c++ = ((params[19] & 0x1) << 7)
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47 | ((params[20] & 0xF) << 3)
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48 | ((params[21] >> 1) & 0x7);
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49 *c++ = ((params[21] & 0x1) << 7)
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50 | ((params[22] & 0xF) << 3)
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51 | ((params[23] >> 1) & 0x7);
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52 *c++ = ((params[23] & 0x1) << 7)
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53 | ((params[24] & 0xF) << 3)
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54 | (params[25] & 0x7);
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55 *c++ = ((params[26] & 0x7) << 5)
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56 | ((params[27] & 0x7) << 2)
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57 | ((params[28] >> 1) & 0x3);
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58 *c++ = ((params[28] & 0x1) << 7)
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59 | ((params[29] & 0x7) << 4)
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60 | ((params[30] >> 1) & 0xF);
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61 *c++ = ((params[30] & 0x1) << 7)
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62 | ((params[31] >> 2) & 0x7F);
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63 *c++ = ((params[31] & 0x3) << 6)
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64 | ((params[32] & 0xF) << 2)
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65 | ((params[33] >> 2) & 0x3);
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66 *c++ = ((params[33] & 0x3) << 6)
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67 | ((params[34] & 0xF) << 2)
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68 | ((params[35] >> 2) & 0x3);
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69 *c++ = ((params[35] & 0x3) << 6)
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70 | ((params[36] & 0xF) << 2)
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71 | ((params[37] >> 2) & 0x3);
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72 *c++ = ((params[37] & 0x3) << 6)
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73 | ((params[38] & 0x7) << 3)
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74 | (params[39] & 0x7);
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75 *c++ = ((params[40] & 0x7) << 5)
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76 | ((params[41] & 0x7) << 2)
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77 | ((params[42] >> 1) & 0x3);
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78 *c++ = ((params[42] & 0x1) << 7)
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79 | ((params[43] & 0x1F) << 2)
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80 | ((params[44] >> 4) & 0x3);
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81 *c++ = ((params[44] & 0xF) << 4)
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82 | (params[45] & 0xF);
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83 *c++ = ((params[46] & 0xF) << 4)
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84 | (params[47] & 0xF);
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85 *c++ = ((params[48] & 0xF) << 4)
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86 | (params[49] & 0xF);
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87 *c++ = ((params[50] & 0xF) << 4)
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88 | ((params[51] & 0x7) << 1)
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89 | ((params[52] >> 2) & 0x1);
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90 *c++ = ((params[52] & 0x3) << 6)
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91 | ((params[53] & 0x7) << 3)
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92 | (params[54] & 0x7);
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93 *c++ = ((params[55] & 0x7) << 5)
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94 | (params[56] & 0x1F);
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95 }