FreeCalypso > hg > gsm-codec-lib
annotate libtwamr/c1035pf.c @ 492:cc3a831712a4
libgsmhr1: implement arbitrary RTP input
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 15 Jun 2024 06:52:37 +0000 |
parents | 6fd6c5fc1aa4 |
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rev | line source |
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libtwamr: integrate c1035pf.c
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1 /* |
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2 ******************************************************************************** |
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3 * |
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4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001 |
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5 * R99 Version 3.3.0 |
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6 * REL-4 Version 4.1.0 |
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7 * |
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8 ******************************************************************************** |
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9 * |
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10 * File : c1035pf.c |
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11 * Purpose : Searches a 35 bit algebraic codebook containing |
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12 * : 10 pulses in a frame of 40 samples. |
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13 * |
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14 ******************************************************************************** |
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15 */ |
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16 /* |
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17 ******************************************************************************** |
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18 * MODULE INCLUDE FILE AND VERSION ID |
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19 ******************************************************************************** |
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20 */ |
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21 #include "namespace.h" |
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22 #include "c1035pf.h" |
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23 /* |
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24 ******************************************************************************** |
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25 * INCLUDE FILES |
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26 ******************************************************************************** |
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27 */ |
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28 #include "typedef.h" |
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29 #include "basic_op.h" |
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30 #include "no_count.h" |
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31 #include "cnst.h" |
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32 #include "inv_sqrt.h" |
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33 #include "set_sign.h" |
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34 #include "cor_h.h" |
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35 #include "s10_8pf.h" |
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36 #include "graytab.h" |
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37 |
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38 /* |
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39 ******************************************************************************** |
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40 * LOCAL VARIABLES AND TABLES |
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41 ******************************************************************************** |
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42 */ |
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43 #define NB_PULSE 10 |
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44 |
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45 /* |
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46 ******************************************************************************** |
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47 * LOCAL PROGRAM CODE |
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48 ******************************************************************************** |
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49 */ |
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50 static void q_p ( |
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51 Word16 *ind, /* Pulse position */ |
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52 Word16 n /* Pulse number */ |
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53 ) |
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54 { |
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55 Word16 tmp; |
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56 |
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57 tmp = *ind; move16 (); |
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58 |
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59 test (); |
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60 if (sub (n, 5) < 0) |
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61 { |
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62 *ind = (tmp & 0x8) | gray[tmp & 0x7]; logic16 (); logic16 (); |
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63 logic16 (); move16 (); |
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64 } |
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65 else |
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66 { |
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67 *ind = gray[tmp & 0x7]; logic16 (); move16 (); |
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68 } |
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69 } |
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70 |
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71 |
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72 /************************************************************************* |
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73 * |
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74 * FUNCTION: build_code() |
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75 * |
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76 * PURPOSE: Builds the codeword, the filtered codeword and index of the |
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77 * codevector, based on the signs and positions of 10 pulses. |
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78 * |
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79 *************************************************************************/ |
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80 |
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81 static void build_code ( |
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82 Word16 codvec[], /* (i) : position of pulses */ |
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83 Word16 sign[], /* (i) : sign of d[n] */ |
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84 Word16 cod[], /* (o) : innovative code vector */ |
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85 Word16 h[], /* (i) : impulse response of weighted synthesis filter*/ |
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86 Word16 y[], /* (o) : filtered innovative code */ |
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87 Word16 indx[] /* (o) : index of 10 pulses (sign+position) */ |
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88 ) |
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89 { |
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90 Word16 i, j, k, track, index, _sign[NB_PULSE]; |
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91 Word16 *p0, *p1, *p2, *p3, *p4, *p5, *p6, *p7, *p8, *p9; |
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92 Word32 s; |
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93 |
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94 for (i = 0; i < L_CODE; i++) |
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95 { |
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96 cod[i] = 0; move16 (); |
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97 } |
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98 for (i = 0; i < NB_TRACK; i++) |
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99 { |
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100 indx[i] = -1; move16 (); |
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101 } |
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102 |
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103 for (k = 0; k < NB_PULSE; k++) |
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104 { |
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105 /* read pulse position */ |
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106 i = codvec[k]; move16 (); |
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107 /* read sign */ |
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108 j = sign[i]; move16 (); |
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109 |
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110 index = mult (i, 6554); /* index = pos/5 */ |
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111 /* track = pos%5 */ |
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112 track = sub (i, extract_l (L_shr (L_mult (index, 5), 1))); |
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113 test (); |
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114 if (j > 0) |
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115 { |
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116 cod[i] = add (cod[i], 4096); move16 (); |
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117 _sign[k] = 8192; move16 (); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
118 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
119 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
120 else |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
121 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
122 cod[i] = sub (cod[i], 4096); move16 (); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
123 _sign[k] = -8192; move16 (); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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124 index = add (index, 8); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
125 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
126 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
127 test (); move16 (); |
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Mychaela Falconia <falcon@freecalypso.org>
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128 if (indx[track] < 0) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
129 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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130 indx[track] = index; move16 (); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
131 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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132 else |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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133 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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134 test (); logic16 (); logic16 (); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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135 if (((index ^ indx[track]) & 8) == 0) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
136 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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137 /* sign of 1st pulse == sign of 2nd pulse */ |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
138 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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139 test (); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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140 if (sub (indx[track], index) <= 0) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
141 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
142 indx[track + 5] = index; move16 (); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
143 } |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
144 else |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
145 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
146 indx[track + 5] = indx[track]; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
147 move16 (); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
148 indx[track] = index; move16 (); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
149 } |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
150 } |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
151 else |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
152 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
153 /* sign of 1st pulse != sign of 2nd pulse */ |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
154 |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
155 test (); logic16 (); logic16 (); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
156 if (sub ((indx[track] & 7), (index & 7)) <= 0) |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
157 { |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
158 indx[track + 5] = indx[track]; |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
159 move16 (); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
160 indx[track] = index; move16 (); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
161 } |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
162 else |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
163 { |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
164 indx[track + 5] = index; move16 (); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
165 } |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
166 } |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
167 } |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
168 } |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
169 |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
170 p0 = h - codvec[0]; move16 (); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
171 p1 = h - codvec[1]; move16 (); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
172 p2 = h - codvec[2]; move16 (); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
173 p3 = h - codvec[3]; move16 (); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
174 p4 = h - codvec[4]; move16 (); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
175 p5 = h - codvec[5]; move16 (); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
176 p6 = h - codvec[6]; move16 (); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
177 p7 = h - codvec[7]; move16 (); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
178 p8 = h - codvec[8]; move16 (); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
179 p9 = h - codvec[9]; move16 (); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
180 |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
181 for (i = 0; i < L_CODE; i++) |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
182 { |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
183 s = 0; move32 (); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
184 s = L_mac (s, *p0++, _sign[0]); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
185 s = L_mac (s, *p1++, _sign[1]); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
186 s = L_mac (s, *p2++, _sign[2]); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
187 s = L_mac (s, *p3++, _sign[3]); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
188 s = L_mac (s, *p4++, _sign[4]); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
189 s = L_mac (s, *p5++, _sign[5]); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
190 s = L_mac (s, *p6++, _sign[6]); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
191 s = L_mac (s, *p7++, _sign[7]); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
192 s = L_mac (s, *p8++, _sign[8]); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
193 s = L_mac (s, *p9++, _sign[9]); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
194 y[i] = round (s); move16 (); |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
195 } |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
196 } |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
197 |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
198 /* |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
199 ******************************************************************************** |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
200 * PUBLIC PROGRAM CODE |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
201 ******************************************************************************** |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
202 */ |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
203 /************************************************************************* |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
204 * |
6fd6c5fc1aa4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
205 * FUNCTION: code_10i40_35bits() |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
206 * |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
207 * PURPOSE: Searches a 35 bit algebraic codebook containing 10 pulses |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
208 * in a frame of 40 samples. |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
209 * |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
210 * DESCRIPTION: |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
211 * The code contains 10 nonzero pulses: i0...i9. |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
212 * All pulses can have two possible amplitudes: +1 or -1. |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
213 * The 40 positions in a subframe are divided into 5 tracks of |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
214 * interleaved positions. Each track contains two pulses. |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
215 * The pulses can have the following possible positions: |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
216 * |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
217 * i0, i5 : 0, 5, 10, 15, 20, 25, 30, 35. |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
218 * i1, i6 : 1, 6, 11, 16, 21, 26, 31, 36. |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
219 * i2, i7 : 2, 7, 12, 17, 22, 27, 32, 37. |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
220 * i3, i8 : 3, 8, 13, 18, 23, 28, 33, 38. |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
221 * i4, i9 : 4, 9, 14, 19, 24, 29, 34, 39. |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
222 * |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
223 * Each pair of pulses require 1 bit for their signs and 6 bits for their |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
224 * positions (3 bits + 3 bits). This results in a 35 bit codebook. |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
225 * The function determines the optimal pulse signs and positions, builds |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
226 * the codevector, and computes the filtered codevector. |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
227 * |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
228 *************************************************************************/ |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
229 |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
230 void code_10i40_35bits ( |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
231 Word16 x[], /* (i) : target vector */ |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
232 Word16 cn[], /* (i) : residual after long term prediction */ |
6fd6c5fc1aa4
libtwamr: integrate c1035pf.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
233 Word16 h[], /* (i) : impulse response of weighted synthesis filter |
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libtwamr: integrate c1035pf.c
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234 h[-L_subfr..-1] must be set to zero */ |
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235 Word16 cod[], /* (o) : algebraic (fixed) codebook excitation */ |
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236 Word16 y[], /* (o) : filtered fixed codebook excitation */ |
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237 Word16 indx[] /* (o) : index of 10 pulses (sign + position) */ |
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238 ) |
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239 { |
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240 Word16 ipos[NB_PULSE], pos_max[NB_TRACK], codvec[NB_PULSE]; |
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241 Word16 dn[L_CODE], sign[L_CODE]; |
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242 Word16 rr[L_CODE][L_CODE], i; |
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243 |
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244 cor_h_x (h, x, dn, 2); |
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245 set_sign12k2 (dn, cn, sign, pos_max, NB_TRACK, ipos, STEP); |
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246 cor_h (h, sign, rr); |
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247 |
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248 search_10and8i40 (NB_PULSE, STEP, NB_TRACK, |
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249 dn, rr, ipos, pos_max, codvec); |
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250 |
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251 build_code (codvec, sign, cod, h, y, indx); |
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252 for (i = 0; i < 10; i++) |
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253 { |
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254 q_p (&indx[i], i); |
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255 } |
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256 return; |
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257 } |