FreeCalypso > hg > fc-magnetite
annotate src/gpf3/ccd/freq_list.c @ 13:a3cab101e488
scripts/str2ind-test.sh development aid added
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 27 Sep 2016 04:19:15 +0000 |
parents | c41a534f33c6 |
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rev | line source |
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1 /* |
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2 +----------------------------------------------------------------------------- |
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3 | Project : CCD |
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4 | Modul : freq_list.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 decoding function for FREQ_LIST type |
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18 +----------------------------------------------------------------------------- |
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19 */ |
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20 |
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21 #define FREQ_LIST_C |
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22 |
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23 /* |
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24 * standard definitions like GLOBAL, UCHAR, ERROR etc. |
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25 */ |
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26 #include "typedefs.h" |
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27 #include "header.h" |
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28 |
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29 #include "string.h" |
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30 |
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31 /* |
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32 * Types and functions for bit access and manipulation |
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33 */ |
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34 #include "ccd_globs.h" |
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35 #include "bitfun.h" |
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36 |
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37 /* |
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38 * Prototypes of ccd internal functions |
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39 */ |
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40 #include "ccd.h" |
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41 |
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42 /* |
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43 * Declaration of coder/decoder tables |
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44 */ |
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45 #include "ccdtable.h" |
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46 /* |
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47 * Function prototypes of CCD-CCDDATA interface |
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48 */ |
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49 #include "ccddata.h" |
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50 |
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51 |
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52 #if !(defined (CCD_TEST)) |
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53 #include "vsi.h" |
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54 #endif |
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55 |
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56 #ifndef RUN_INT_RAM |
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57 /* |
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58 * Attention: in this file all static and global functions as well as |
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59 * the static data are controlled by one RUN_.. clause. |
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60 * The static data and functions are currently only used in the decode |
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61 * function, whereas encoding is not yet available. |
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62 */ |
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63 static U16 first; |
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64 static U16 last; |
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65 static U16 num; |
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66 |
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67 |
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68 /* |
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69 * The W-parameter in the 256 range start from bit 7 of the |
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70 * information element. The following table indicate the number |
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71 * of W-parameters and their length in bits. A length of zero |
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72 * indicated the end of the table. |
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73 */ |
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74 static const T_W_PARAM param_256[10] = |
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75 { |
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76 /* |
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77 * length count |
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78 */ |
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79 10, 1, |
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80 8, 1, |
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81 7, 2, |
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82 6, 4, |
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83 5, 8, |
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84 4, 16, |
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85 3, 32, |
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86 2, 64, |
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87 1, 128, |
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88 0, 0 |
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89 }; |
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90 |
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91 /* |
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92 * The W-parameter in the 128 range start from bit 7 of the |
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93 * information element. The following table indicate the number |
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94 * of W-parameters and their length in bits. A length of zero |
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95 * indicated the end of the table. |
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96 */ |
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97 |
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98 static const T_W_PARAM param_128[9] = |
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99 { |
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100 /* |
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101 * length count |
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102 */ |
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103 10, 1, |
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104 7, 1, |
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105 6, 2, |
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106 5, 4, |
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107 4, 8, |
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108 3, 16, |
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109 2, 32, |
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110 1, 64, |
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111 0, 0 |
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112 }; |
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113 |
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114 /* |
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115 * Compare results of the first channel with those of the others |
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116 * to find the dimensions. |
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117 */ |
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118 static void completeAddInfo (U8 *BitmapInStruct) |
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119 { |
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120 *(U16*) (BitmapInStruct - 2) += num; |
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121 if (*(U16*) (BitmapInStruct - 6) > first) |
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122 *(U16*) (BitmapInStruct - 6) = first; |
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123 if (*(U16*) (BitmapInStruct - 4) < last) |
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124 *(U16*) (BitmapInStruct - 6) = last; |
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125 } |
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126 |
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127 static void setFirstChanNr (U8 *BitmapInStruct, short w0) |
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128 { |
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129 U16 bitposition; |
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130 bitposition = (w0 == 0) ? 0 : (U16)(BITOFFSET_LIST - w0); |
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131 BitmapInStruct[bitposition >> 3] |= ByteBitMask[bitposition & 7]; |
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132 first = bitposition; |
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133 last = bitposition; |
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134 num = 1; |
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135 } |
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136 /* |
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137 +--------------------------------------------------------------------+ |
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138 | PROJECT : CCD MODULE : cdc_freq_list_decode | |
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139 +--------------------------------------------------------------------+ |
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140 PURPOSE : The function creates a frequency hopping list from one of |
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141 the following information elements according GSM 4.08: |
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142 |
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143 cell channel description |
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144 frequency list |
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145 frequency short list |
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146 neighbour cell description |
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147 |
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148 The format identifier of the information element is defined as: |
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149 |
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150 FORMAT-ID, Format Identifier |
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151 |
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152 Bit Bit Bit Bit Bit format notation |
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153 8 7 4 3 2 |
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154 |
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155 0 0 X X X bit map 0 |
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156 1 0 0 X X 1024 range |
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157 1 0 1 0 0 512 range |
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158 1 0 1 0 1 256 range |
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159 1 0 1 1 0 128 range |
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160 1 0 1 1 1 variable bit map |
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161 |
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162 The space this IE takes in the C-structure is depicted in the |
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163 example below: |
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164 typedef struct |
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165 { |
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166 U16 first; |
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167 U16 last; |
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168 U16 num; |
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169 U8 bitmap[128]; |
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170 } BMP_arfcn_list; |
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171 |
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172 The member bitmap stores a list of frequencies in a range of |
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173 0 - 1023 (GSM), where some of the frequencies are not yet used. |
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174 */ |
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175 |
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176 SHORT cdc_freq_list_decode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs) |
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177 { |
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178 U8 *FirstByte = globs->bitbuf + globs->bytepos; |
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179 ULONG cix_ref, num_prolog_steps, prolog_step_ref; |
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180 |
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181 #ifdef DEBUG_CCD |
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182 TRACE_CCD (globs, "cdc_freq_list_decode()"); |
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183 #ifdef CCD_SYMBOLS |
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184 TRACE_CCD (globs, "decoding list %s with range 1024 format", |
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185 ccddata_get_alias((USHORT) e_ref, 1)); |
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186 #else |
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187 TRACE_CCD (globs, "decoding list %d of range 1024 format", melem[e_ref].elemRef); |
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188 #endif |
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189 #endif |
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190 |
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191 cix_ref = melem[e_ref].calcIdxRef; |
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192 num_prolog_steps = calcidx[cix_ref].numPrologSteps; |
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193 prolog_step_ref = calcidx[cix_ref].prologStepRef; |
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194 |
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195 /* |
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196 * if this element have a defined Prolog |
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197 * we have to process it before decoding the bitstream |
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198 */ |
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199 if (num_prolog_steps) |
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200 { |
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201 ccd_performOperations (num_prolog_steps, prolog_step_ref, globs); |
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202 } |
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203 |
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204 globs->SeekTLVExt = FALSE; |
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205 globs->pstructOffs = melem[e_ref].structOffs; |
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206 |
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207 /* |
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208 * Bitmap 0 format |
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209 * only for GSM 900 or GSM 850 bands !!!! |
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210 * std = STD_900, STD_EGSM, STD_DUAL, STD_DUAL_EGSM, STD_850, STD_DUAL_US |
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211 * No check of std for being PCS 1900 or DCS 1800 is implemented. |
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212 */ |
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213 if ((*FirstByte & 0x80) == 0) |
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214 { |
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215 |
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216 #ifdef DEBUG_CCD |
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217 TRACE_CCD (globs, "bitmap 0 format"); |
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218 #endif |
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219 /* |
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220 * Copy only the first 16 bytes. According to section 10.5.2.1b.2 of |
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221 * GSM04.08, 124 bits are dedicated to ARFCN and two bits to the Format-ID. |
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222 * Two bits are spare. |
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223 */ |
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224 FirstByte = globs->pstruct + globs->pstructOffs; |
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225 /* first bit */ |
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226 *(U16 *) FirstByte = 896;//T_LIST_MAX_SIZE - 16; |
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227 /* last bit */ |
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228 *(U16 *) (FirstByte+2) = T_LIST_MAX_SIZE; |
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229 /* number of entries */ |
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230 *(U16 *) (FirstByte+4) = 124; |
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231 memcpy (FirstByte + T_LIST_MAX_SIZE - 10, //FirstByte + 6 + T_LIST_MAX_SIZE - 16, |
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232 globs->bitbuf + globs->bytepos, 16); |
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233 } |
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234 else |
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235 { |
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236 U16 ListLength = mvar[melem[e_ref].elemRef].bSize; |
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237 U8 *BitmapInStruct = globs->pstruct + globs->pstructOffs; |
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238 first = 0; |
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239 last = 0; |
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240 num = 0; |
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241 /* |
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242 * RANGE 128, |
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243 */ |
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244 if ((*FirstByte & 0x8E) == 0x8C) |
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245 { |
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246 /* |
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247 * Use dynamic memory for calculation instead of global memory or stack. |
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248 */ |
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249 short *w; |
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250 MALLOC (w, 129 * sizeof (U16)); |
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251 |
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252 #ifdef DEBUG_CCD |
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253 TRACE_CCD (globs, "range 128 format"); |
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254 #endif |
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255 |
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256 /* |
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257 * The algorithm for several ranges is the same with different |
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258 * tables. The W-parameter start with bit 7. Skip over offset. |
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259 */ |
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260 bf_incBitpos (7, globs); |
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261 cdc_decode_param (param_128, w, ListLength, globs); |
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262 |
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263 /* |
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264 * W[0] contains the first channel number |
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265 */ |
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266 setFirstChanNr (BitmapInStruct, w[0]); |
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267 |
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268 /* |
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269 * Decode and set the remaining channel number according the |
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270 * algorithm described in GSM 4.08. |
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271 */ |
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272 cdc_decode_frequencies (127, &w[1], w[0], FREQUENCY_LIST, globs); |
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273 completeAddInfo (BitmapInStruct); |
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274 |
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275 /* |
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276 * free the dynamic allocated memory. |
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277 */ |
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278 MFREE (w); |
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279 } |
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280 /* |
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281 * RANGE 256 |
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282 */ |
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283 if ((*FirstByte & 0x8E) == 0x8A) |
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284 { |
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285 /* |
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286 * Use dynamic memory for calculation instead of global memory or stack. |
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287 */ |
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288 short *w; |
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289 MALLOC (w, 257 * sizeof (U16)); |
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290 |
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291 #ifdef DEBUG_CCD |
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292 TRACE_CCD (globs, "range 256 format"); |
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293 #endif |
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294 |
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295 /* |
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296 * Decode the W-parameter. The W-parameter start with bit 7. |
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297 */ |
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298 bf_incBitpos (7, globs); |
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299 cdc_decode_param (param_256, w, ListLength, globs); |
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300 |
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301 /* |
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302 * W[0] contains the first channel number |
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303 */ |
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304 setFirstChanNr (BitmapInStruct, w[0]); |
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305 |
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306 /* |
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307 * decode and set the remaining channel number according the |
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308 * algorithm described in GSM 4.08. |
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309 */ |
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310 cdc_decode_frequencies (255, &w[1], w[0], FREQUENCY_LIST, globs); |
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311 completeAddInfo (BitmapInStruct); |
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312 |
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313 /* |
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314 * free the dynamic allocated memory. |
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315 */ |
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316 MFREE (w); |
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317 } |
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318 /* |
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319 * RANGE 512 |
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320 */ |
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321 if ((*FirstByte & 0x8E) == 0x88) |
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322 { |
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323 /* |
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324 * Use dynamic memory for calculation instead of global memory or stack. |
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325 */ |
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326 short *w; |
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327 MALLOC (w, 257 * sizeof (U16)); |
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328 |
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329 #ifdef DEBUG_CCD |
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330 TRACE_CCD (globs, "range 512 format"); |
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331 #endif |
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332 |
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333 /* |
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334 * the algorithm for the several ranges is the same with different |
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335 * tables. The W-parameter start with bit 7. Skip over offset. |
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336 */ |
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337 bf_incBitpos (7, globs); |
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338 cdc_decode_param (param_512, w, ListLength, globs); |
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339 |
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340 /* |
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341 * W[0] contains the first channel number |
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342 */ |
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343 setFirstChanNr (BitmapInStruct, w[0]); |
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344 |
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345 /* |
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346 * decode and set the remaining channel number according the |
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347 * algorithm described in GSM 4.08. |
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348 */ |
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349 cdc_decode_frequencies (511, &w[1], w[0], FREQUENCY_LIST, globs); |
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350 completeAddInfo (BitmapInStruct); |
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351 |
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352 /* |
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353 * free the dynamic allocated memory. |
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354 */ |
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355 MFREE (w); |
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356 } |
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357 |
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358 if ((*FirstByte & 0x88) == 0x80) |
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359 { |
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360 /* |
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361 * RANGE 1024 |
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362 * |
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363 * Use dynamic memory for calculation instead of global memory or stack. |
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364 */ |
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365 U8 f0; |
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366 U8 offset; |
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367 |
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368 short *w; |
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369 MALLOC (w, 257 * sizeof (U16)); |
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370 |
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371 #ifdef DEBUG_CCD |
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372 TRACE_CCD (globs, "range 1024 format"); |
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373 #endif |
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374 |
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375 /* |
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376 * Get the f0 indicator. It indicates whether channel 0 is part |
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377 * of the frequency hopping list or not. |
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378 */ |
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379 /* The following lines are equal to: |
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380 * ccd_decodeByte (FirstByte, (U16)(globs->byteoffs+5), 1, &f0); |
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381 */ |
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382 offset = globs->byteoffs+5; |
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383 if (offset < 8) |
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384 { |
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385 f0 = FirstByte[0] << offset; |
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386 f0 &= 0x80; |
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387 } |
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388 else |
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389 { |
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390 U16 tmpvar; |
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391 tmpvar = *(U16*) FirstByte; |
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392 tmpvar <<= offset; |
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393 f0 = tmpvar & 0x8000; |
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394 } |
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395 |
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396 /* |
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397 * The algorithm for the several ranges is the same with different |
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398 * tables. The W-parameter start with bit 6. Skip over offset. |
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399 */ |
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400 bf_incBitpos (6, globs); |
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401 cdc_decode_param (param_1024, w, ListLength, globs); |
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402 |
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403 /* |
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404 * If indicated add channel 0 to the list |
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405 */ |
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406 if (f0) |
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407 { |
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408 /* The following is equal to setFirstChanNr(0); */ |
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409 BitmapInStruct[0] |= 0x80; |
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410 num = 1; |
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411 } |
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412 |
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413 /* |
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414 * decode and set the remaining channel number according the |
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415 * algorithm described in GSM 4.08. |
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416 */ |
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417 cdc_decode_frequencies (1023, &w[0], 0, FREQUENCY_LIST, globs); |
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418 completeAddInfo (BitmapInStruct); |
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419 |
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420 /* |
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421 * free the dynamic allocated memory. |
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422 */ |
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423 MFREE (w); |
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424 } |
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425 /* |
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426 * RANGE variable |
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427 */ |
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428 if ((*FirstByte & 0x8E) == 0x8E) |
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429 { |
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430 /* |
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431 * The format is similar to the bitmap 0 format. The |
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432 * calculation starts from a base channel number svalue |
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433 * instead of channel number 1. |
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434 */ |
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435 U32 lvalue; |
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436 U16 svalue; |
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437 U32 i; |
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438 U16 bitposition; |
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439 |
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440 #ifdef DEBUG_CCD |
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441 TRACE_CCD (globs, "range variable format"); |
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442 #endif |
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443 |
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444 /* Get the first channel number. */ |
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445 bf_incBitpos (7, globs); |
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446 lvalue = bf_getBits (10, globs); |
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447 |
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448 /* Copy lvalue to svalue to set the correct channel. */ |
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449 svalue = (U16)lvalue; |
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450 setFirstChanNr (BitmapInStruct, svalue); |
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451 first = svalue; |
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452 num = 1; |
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453 for (i = 1; i < 112; i++) |
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454 { |
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455 /* |
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456 * Get the value of the next bit. |
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457 * If the bit is set, set channel i+svalue |
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458 */ |
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459 if (bf_readBit (globs)) |
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460 { |
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461 U16 channel = (U16)for_modulo(i+svalue, 1024); |
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462 |
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463 bitposition = (channel == 0) ? 0 : (U16)(BITOFFSET_LIST - channel); |
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464 BitmapInStruct[bitposition >> 3] |= ByteBitMask[bitposition & 7]; |
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465 last = bitposition; |
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466 num++; |
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467 } |
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468 } |
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469 completeAddInfo (BitmapInStruct); |
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470 } |
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471 } |
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472 |
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473 return 1; |
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474 } |
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475 |
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476 /* |
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477 +--------------------------------------------------------------------+ |
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478 | PROJECT : CCD MODULE : cdc_freq_list_encode | |
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479 +--------------------------------------------------------------------+ |
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480 |
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481 PURPOSE : Encoding function is not needed, since this message is |
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482 sent from net to MS. |
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483 It could be only useful for testing procedure if there |
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484 were an encoder function at this place. |
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485 This will be a future work. |
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486 */ |
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487 |
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488 SHORT cdc_freq_list_encode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs) |
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489 { |
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490 |
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491 #ifdef DEBUG_CCD |
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492 TRACE_CCD (globs, "cdc_freq_list_encode()"); |
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493 #endif |
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494 #ifdef TARGET_WIN32 |
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495 /* TBD */ |
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496 #endif |
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497 |
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498 return 1; |
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499 } |
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500 #endif /* !RUN_INT_RAM */ |