FreeCalypso > hg > gsm-codec-lib

annotate libgsmhr1/enc_out_order.c @ 540:5595293e4f29

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gsmx-to-tw5a utility: use emit_hex_frame() in libtest
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 22 Sep 2024 00:36:35 +0000
parents 17c0aabae474
children
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17c0aabae474 libgsmhr1: integrate fillBitAlloc()
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1 /*
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2 * This module was derived from host.c in the original GSM 06.06 source,
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3 * reduced to just fillBitAlloc() function.
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4 */
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5
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6 /*_________________________________________________________________________
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7 | |
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8 | Include Files |
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9 |_________________________________________________________________________|
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10 */
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11
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12 #include "typedefs.h"
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13 #include "namespace.h"
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14 #include "enc_out_order.h"
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15
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16 /***************************************************************************
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17 *
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18 * FUNCTION NAME: fillBitAlloc
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19 *
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20 * PURPOSE:
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21 *
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22 * Arrange speech parameters for encoder output
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23 *
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24 * INPUTS:
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25 *
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26 * The speechcoders codewords:
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27 * iR0 - Frame energy
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28 * piVqIndeces[0:2] - LPC vector quantizer codewords
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29 * iSoftInterp - Soft interpolation bit 1 or 0
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30 * iVoicing - voicing mode 0,1,2,3
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31 * piLags[0:3] - Frame and delta lag codewords
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32 * piCodeWrdsA[0:3] - VSELP codevector 1
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33 * piCodeWrdsB[0:3] - VSELP codevector 2 (n/a for voiced modes)
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34 * piGsp0s[0:3] - GSP0 codewords
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35 * swVadFlag - voice activity detection flag
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36 * swSP - Speech flag
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37 *
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38 * OUTPUTS:
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39 *
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40 * pswBAlloc[0:20] - an array into which the coded data is moved
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41 *
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42 * RETURN VALUE:
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43 *
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44 * none
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45 *
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46 * REFERENCES: Sub-clause 2.1 and 4.1.12 of GSM Recomendation 06.20
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47 *
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48 **************************************************************************/
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49
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50 void fillBitAlloc(int iVoicing, int iR0, int *piVqIndeces,
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51 int iSoftInterp, int *piLags,
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52 int *piCodeWrdsA, int *piCodeWrdsB,
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53 int *piGsp0s, Shortword swVadFlag,
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54 Shortword swSP, Shortword *pswBAlloc)
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55 {
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56
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57 /*_________________________________________________________________________
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58 | |
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59 | Automatic Variables |
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60 |_________________________________________________________________________|
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61 */
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62
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63 int i;
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64 Shortword *pswNxt;
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65
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66 /*_________________________________________________________________________
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67 | |
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68 | Executable Code |
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69 |_________________________________________________________________________|
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70 */
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71
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72 pswNxt = pswBAlloc;
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73 *pswNxt++ = iR0;
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74 for (i = 0; i < 3; i++)
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75 *pswNxt++ = *piVqIndeces++;
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76 *pswNxt++ = iSoftInterp;
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77 *pswNxt++ = iVoicing;
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78
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79 /* check voicing mode */
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80 if (iVoicing)
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81 {
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82 /* voiced mode */
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83 for (i = 0; i < N_SUB; i++)
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84 {
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85 *pswNxt++ = *piLags++;
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86 *pswNxt++ = *piCodeWrdsA++;
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87 *pswNxt++ = *piGsp0s++;
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88 }
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89 }
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90 else
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91 { /* unvoiced frame */
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92 for (i = 0; i < N_SUB; i++)
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93 {
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94 *pswNxt++ = *piCodeWrdsA++;
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95 *pswNxt++ = *piCodeWrdsB++;
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96 *pswNxt++ = *piGsp0s++;
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97 }
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98 }
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99 *pswNxt++ = swVadFlag;
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100 *pswNxt++ = swSP;
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101 }