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annotate src/gpf/ccd/fdd_ci.c @ 101:2c4e31c7c4e5

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LICENSE: same as Citrine and Magnetite
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 21 Jul 2018 07:28:12 +0000
parents 1ea54a97e831
children
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1 /*
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2 +-----------------------------------------------------------------------------
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3 | Project : CCD
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4 | Modul : fdd_ci.c
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5 +-----------------------------------------------------------------------------
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6 | Copyright 2004 Texas Instruments Deutschland GmbH
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7 | All rights reserved.
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8 |
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9 | This file is confidential and a trade secret of Texas
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10 | Instruments Deutschland GmbH
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11 | The receipt of or possession of this file does not convey
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12 | any rights to reproduce or disclose its contents or to
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13 | manufacture, use, or sell anything it may describe, in
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14 | whole, or in part, without the specific written consent of
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15 | Texas Instruments Deutschland GmbH.
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16 +-----------------------------------------------------------------------------
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17 | Purpose : Definition of encoding and decoding functions for FDD_CI type
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18 +-----------------------------------------------------------------------------
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19 */
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20
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21
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22 /*
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23 * standard definitions like GLOBAL, UCHAR, ERROR etc.
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24 */
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25 #include "typedefs.h"
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26 #include "header.h"
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27
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28 /*
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29 * Types and functions for bit access and manipulation
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30 */
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31 #include "ccd_globs.h"
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32 /*
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33 * Function prototypes of CCD-CCDDATA interface
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34 */
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35 #include "ccddata.h"
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36
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37
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38 /*
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39 * Prototypes of ccd internal functions
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40 */
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41 #include "ccd.h"
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42 #include "bitfun.h"
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43
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44 /*
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45 * Declaration of coder/decoder tables
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46 */
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47 #include "ccdtable.h"
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48
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49 #if !(defined (CCD_TEST))
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50 #include "vsi.h"
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51 #endif
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52
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53 #ifndef RUN_INT_RAM
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54 /* Attention: static data, only used in cdc_fdd_ci_decode */
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55 static const U8 params_bSize[17] =
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56 {
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57 0,
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58 10,
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59 19, 28,
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60 36, 44, 52, 60,
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61 67, 74, 81, 88, 95, 102, 109, 116,
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62 122
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63 };
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64 /*
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65 +--------------------------------------------------------------------+
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66 | PROJECT : CCD MODULE : cdc_fdd_ci_decode |
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67 +--------------------------------------------------------------------+
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68
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69 PURPOSE : Decoding of the FDD_CELL_INFORMATION Field reusing
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70 RANGE 1024 format of frequency list information.
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71 The IE is preceded by FDD_Indic0(1 bit) and made of the
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72 following two IEs:
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73 1) NR_OF_FDD_CELLS(5 bit field),
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74 2) FDD_CELL_INFORMATION information parameters
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75
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76 FDD_Indic0 indicates if the parameter value '0000000000'
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77 is a member of the set.
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78
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79 FDD_CELL_INFORMATION or "Scrambling Codes and Diversity
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80 Field" is a bit filed of length
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81 p(Number_of_Scrambling_Codes_and_Diversity),
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82 whereas the function p(x) is defined by the table below
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83 with n = Number_of_Scrambling_Codes_and_Diversity.
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84 n p n p n p n p
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85 0 0 5 44 10 81 15 116
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86 1 10 6 52 11 88 16 122
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87 2 19 7 60 12 95 17-31 0
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88 3 28 8 67 13 102
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89 4 36 9 74 14 109
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90
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91 The message is sent from net to MS and a MS supporting
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92 enhanced measurements has to understand it.
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93
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94 The space this IE takes in the C-structure is made of a
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95 counter for the number of decoded parameter and an array
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96 of them.
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97 */
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98
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99 SHORT cdc_fdd_ci_decode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs)
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100 {
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101 U8 ListSize = 0;
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102 U16 ListBitLen = 0;
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103 ULONG cix_ref, num_prolog_steps, prolog_step_ref;
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104 short *w;
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105
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106 #ifdef DEBUG_CCD
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107 TRACE_CCD (globs, "cdc_fdd_ci_decode()");
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108 #ifdef CCD_SYMBOLS
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109 TRACE_CCD (globs, "decoding list %s with range 1024 format",
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110 ccddata_get_alias((USHORT) e_ref, 1));
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111 #else
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112 TRACE_CCD (globs, "decoding elem %d with range 1024 format", melem[e_ref].elemRef);
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113 #endif
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114 #endif
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115
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116 globs->SeekTLVExt = FALSE;
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117
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118 cix_ref = melem[e_ref].calcIdxRef;
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119 num_prolog_steps = calcidx[cix_ref].numPrologSteps;
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120 prolog_step_ref = calcidx[cix_ref].prologStepRef;
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121
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122 /*
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123 * if this element have a defined Prolog
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124 * we have to process it before decoding the bitstream
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125 */
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126 if (num_prolog_steps)
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127 {
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128 ccd_performOperations (num_prolog_steps, prolog_step_ref, globs);
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129 }
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130
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131 /*
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132 * First read NR_OF_FDD_CELLS (5 bits).
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133 */
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134 globs->pstructOffs = melem[e_ref].structOffs;;
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135 bf_readBits (5, globs);
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136 ListSize = globs->pstruct[globs->pstructOffs++];
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137
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138 /* If n=0 there is nothing to do for this IE. */
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139 if (!ListSize)
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140 {
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141 return 1;
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142 }
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143
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144 /* Read the corresponding bit number or suppose the maximum length. */
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145 if (ListSize <= 16)
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146 {
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147 ListBitLen = params_bSize [ListSize];
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148 }
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149 else
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150 {
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151 /* If n>17 there is nothing to do for this IE. */
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152 return 1;
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153 }
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154 /*
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155 * Bit size for params is bigger than the size of unread bits in the
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156 * message buffer. Danger: buffer overwriting!
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157 */
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158 if ( ListBitLen > globs->maxBitpos - globs->bitpos)
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159 {
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160 ccd_recordFault (globs, ERR_ELEM_LEN, BREAK, (USHORT) e_ref,
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161 globs->pstruct + globs->pstructOffs);
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162 ListBitLen = (U16)(globs->maxBitpos - globs->bitpos);
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163 }
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164
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165 /*
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166 * Use dynamic memory for calculation instead of global memory or stack.
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167 */
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168 MALLOC (w, 257 * sizeof (U16));
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169
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170 /* Decode the W-parameter. */
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171 cdc_decode_param (param_1024, w, ListBitLen, globs);
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172
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173 /*
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174 * Decode and set the remaining channel number according the
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175 * algorithm described in GSM 4.08.
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176 */
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177 cdc_decode_frequencies (1023, &w[0], 0, FDD_CI_LIST, globs);
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178
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179 /* Free the dynamic allocated memory. */
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180 MFREE (w);
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181
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182 return 1;
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183 }
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184 #endif /* !RUN_INT_RAM */
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185
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186 #ifndef RUN_INT_RAM
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187 /*
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188 +--------------------------------------------------------------------+
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189 | PROJECT : CCD MODULE : cdc_fdd_ci_encode |
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190 +--------------------------------------------------------------------+
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191
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192 PURPOSE : Encoding function is not needed, since this message is
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193 sent only from net to MS.
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194 It could be only useful for testing procedure if there
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195 were an encoder function at this place.
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196 This will be a future work.
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197 */
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198
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199 SHORT cdc_fdd_ci_encode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs)
1ea54a97e831 src/gpf: import of Magnetite src/gpf3
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diff changeset
200 {
1ea54a97e831 src/gpf: import of Magnetite src/gpf3
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parents:
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201
1ea54a97e831 src/gpf: import of Magnetite src/gpf3
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diff changeset
202 #ifdef DEBUG_CCD
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203 TRACE_CCD (globs, "cdc_fdd_ci_encode()");
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diff changeset
204 #endif
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diff changeset
205 #ifdef TARGET_WIN32
1ea54a97e831 src/gpf: import of Magnetite src/gpf3
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parents:
diff changeset
206 /* TBD */
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parents:
diff changeset
207 #endif
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208 return 1;
1ea54a97e831 src/gpf: import of Magnetite src/gpf3
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parents:
diff changeset
209 }
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diff changeset
210 #endif /* !RUN_INT_RAM */