FreeCalypso > hg > fc-magnetite
annotate src/gpf3/ccd/fdd_ci.c @ 2:c41a534f33c6
src/gpf3: preened GPF goo from TCS3.2
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 25 Sep 2016 23:52:50 +0000 |
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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) |
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200 { |
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201 |
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202 #ifdef DEBUG_CCD |
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203 TRACE_CCD (globs, "cdc_fdd_ci_encode()"); |
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204 #endif |
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205 #ifdef TARGET_WIN32 |
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206 /* TBD */ |
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207 #endif |
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208 return 1; |
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209 } |
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210 #endif /* !RUN_INT_RAM */ |