FreeCalypso > hg > fc-magnetite
annotate src/gpf3/ccd/asn1_choice.c @ 421:6a4d9f47793e
src/ui3/bmi: file renames to make the case consistent
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 21 Jan 2018 03:28:53 +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 : |
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4 | Modul : asn1_choice.c |
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5 +----------------------------------------------------------------------------- |
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6 | Copyright 2002 Texas Instruments Berlin, AG |
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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 Berlin, AG |
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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 Berlin, AG. |
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16 +----------------------------------------------------------------------------- |
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17 | Purpose : Definition of encoding and decoding functions for ASN1_CHOICE |
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18 | elements |
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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 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 * Prototypes of ccd (USE_DRIVER EQ undef) for prototypes only |
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30 * look at ccdapi.h |
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31 */ |
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32 #undef USE_DRIVER |
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33 #include "ccdapi.h" |
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34 |
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35 /* |
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36 * Types and functions for bit access and manipulation |
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37 */ |
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38 #include "ccd_globs.h" |
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39 #include "bitfun.h" |
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40 |
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41 /* |
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42 * Prototypes and constants in the common part of ccd |
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43 */ |
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44 #include "ccd.h" |
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45 #include "ccd_codingtypes.h" |
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46 |
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47 /* |
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48 * Declaration of coder/decoder tables |
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49 */ |
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50 #include "ccdtable.h" |
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51 #include "ccddata.h" |
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52 |
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53 EXTERN T_FUNC_POINTER codec[MAX_CODEC_ID+1][2]; |
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54 |
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55 #ifndef RUN_INT_RAM |
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56 const UBYTE bitSize[] = {0, 1, 1, 2, 2, 3, 3, 3, 3, |
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57 4, 4, 4, 4, 4, 4, 4, 4, |
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58 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
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59 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
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60 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6}; |
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61 #endif /* !RUN_INT_RAM */ |
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62 |
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63 #ifndef RUN_INT_RAM |
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64 /* |
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65 +--------------------------------------------------------------------+ |
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66 | PROJECT : CCD (6144) MODULE : asn1_choice | |
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67 | STATE : code ROUTINE : PER_Decode_ASN1_CHOICE_altervative | |
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68 +--------------------------------------------------------------------+ |
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69 |
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70 PURPOSE : Decode a chosen alternative of an ASN.1 CHOICE type |
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71 Use the parameter union tag bit-size to read the CHOICE |
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72 index. Because of the ascending enumeration of union tags |
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73 it is easy to calculate the e_ref for the chosen element |
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74 which is to be decoded. Then the appropriate decoding |
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75 function for the chosen element is called. |
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76 |
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77 No actions for pointer types (dynamic arrays), as CHOICE |
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78 clauses contain no information in themselves. Memory is |
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79 allocated in the containing SEQUENCE instead. |
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80 */ |
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81 void PER_Decode_ASN1_CHOICE_alterative (const ULONG e_ref, T_ENUM UnionTag, T_CCD_Globs *globs) |
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82 { |
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83 UBYTE *old_pstruct; |
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84 ULONG elem_ref, c_ref; |
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85 |
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86 c_ref = (ULONG) melem[e_ref].elemRef; |
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87 |
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88 /* |
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89 * Calculate the elem_ref for the chosen element. |
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90 * Write the CHOICE tag value in the C-structure. |
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91 */ |
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92 elem_ref = mcomp[c_ref].componentRef + (ULONG) UnionTag; |
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93 *(T_ENUM *) (globs->pstruct+globs->pstructOffs) = (T_ENUM) UnionTag; |
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94 |
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95 /* |
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96 * Prepare for decoding next element. |
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97 * Store the current value of the C-structure pointer. After decoding the CHOICE component |
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98 * we will set the pointer to this stored value. Then we will use pstructOffs for pointing |
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99 * to the next element. |
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100 */ |
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101 old_pstruct = globs->pstruct; |
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102 globs->pstruct += (globs->pstructOffs + sizeof(T_ENUM)); |
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103 |
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104 #ifdef DYNAMIC_ARRAYS |
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105 /* |
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106 * Allocate memory for this whole composition, if elemType is |
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107 * one of the pointer types. |
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108 */ |
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109 if ( is_pointer_type(e_ref) AND |
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110 PER_allocmem_and_update(e_ref, 1, globs) NEQ ccdOK ) { |
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111 return; |
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112 } else |
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113 #endif |
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114 |
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115 /* |
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116 * Call the decode function for the chosen element. |
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117 */ |
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118 (void) codec[melem[elem_ref].codingType][DECODE_FUN] |
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119 (c_ref, elem_ref, globs); |
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120 /* |
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121 * Prepare for decoding the next element. |
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122 */ |
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123 globs->pstruct = old_pstruct; |
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124 } |
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125 #endif /* !RUN_INT_RAM */ |
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126 |
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127 #ifndef RUN_INT_RAM |
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128 /* |
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129 +--------------------------------------------------------------------+ |
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130 | PROJECT : CCD (6144) MODULE : asn1_choice | |
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131 | STATE : code ROUTINE : cdc_asn1_choice_decode | |
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132 +--------------------------------------------------------------------+ |
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133 |
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134 PURPOSE : Decode ASN.1 CHOICE type according to PER |
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135 CHOICE index is read from the message bit string. Its |
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136 bit-size can be extracted from the number of CHOICE |
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137 alternatives. |
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138 For decoding the CHOICE alternative itself, call the same |
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139 function as for extensible CHOICE types. |
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140 */ |
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141 SHORT cdc_asn1_choice_decode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs) |
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142 { |
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143 T_ENUM UnionTag=0; /* default: only one alternative */ |
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144 ULONG num_of_comps, mcomp_ref; |
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145 |
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146 mcomp_ref = (ULONG) melem[e_ref].elemRef; |
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147 |
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148 #ifdef DEBUG_CCD |
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149 #ifndef CCD_SYMBOLS |
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150 TRACE_CCD (globs, "cdc_asn1_choice_decode()"); |
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151 #else |
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152 TRACE_CCD (globs, "cdc_asn1_choice_decode() %s", mcomp[mcomp_ref].name); |
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153 #endif |
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154 #endif |
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155 |
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156 /* Don't do anything for empty choices */ |
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157 if (mcomp[mcomp_ref].numOfComponents == 0) |
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158 { |
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159 return 1; |
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160 } |
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161 |
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162 globs->pstructOffs = melem[e_ref].structOffs; |
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163 |
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164 /* For optional elements we have already set the valid flag in the |
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165 * C-structure. We have done it while processing ASN1_SEQ. |
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166 */ |
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167 if ( ! cdc_isPresent(e_ref, globs) ) { |
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168 return 1; |
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169 } |
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170 |
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171 /* |
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172 * Get the bit size of the CHOICE index. |
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173 * Then read the bits representing the index in the air message. |
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174 */ |
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175 num_of_comps = (ULONG) mcomp[mcomp_ref].numOfComponents; |
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176 /* CHOICE index is encoded only if there are more than one alternatives. */ |
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177 if (num_of_comps NEQ 1) |
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178 { |
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179 UnionTag = bf_getBits ((U32)bitSize[num_of_comps], globs); |
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180 /* |
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181 * Check correctness of the read CHOICE index. |
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182 */ |
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183 if ((ULONG)UnionTag >= num_of_comps) |
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184 { |
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185 ccd_recordFault (globs, ERR_ASN1_ENCODING, BREAK, (USHORT) e_ref, globs->pstruct+globs->pstructOffs); |
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186 } |
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187 } |
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188 PER_Decode_ASN1_CHOICE_alterative (e_ref, UnionTag, globs); |
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189 return 1; |
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190 } |
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191 #endif /* !RUN_INT_RAM */ |
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192 |
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193 #ifndef RUN_INT_RAM |
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194 /* |
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195 +--------------------------------------------------------------------+ |
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196 | PROJECT : CCD (6144) MODULE : asn1_choice | |
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197 | STATE : code ROUTINE : PER_Encode_ASN1_CHOICE_altervative | |
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198 +--------------------------------------------------------------------+ |
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199 |
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200 PURPOSE : Encode a chosen alternative of an ASN.1 CHOICE type. |
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201 |
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202 Because of ascending enumeration of union tags it is |
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203 easy to calculate the e_ref for the chosen element to be |
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204 encoded. Then the appropriate encoding function for the |
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205 chosen element is called. |
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206 |
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207 No actions for pointer types (dynamic arrays), as CHOICE |
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208 clauses contain no information in themselves. Memory is |
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209 allocated in the containing SEQUENCE instead. |
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210 */ |
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211 void PER_Encode_ASN1_CHOICE_alterative (const ULONG e_ref, T_ENUM UnionTag, T_CCD_Globs *globs) |
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212 { |
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213 UBYTE *old_pstruct; |
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214 ULONG elem_ref, c_ref; |
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215 |
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216 c_ref = (ULONG) melem[e_ref].elemRef; |
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217 |
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218 /* |
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219 * Prepare for encoding next element. |
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220 * Store the current value of the C-structure pointer. After encoding |
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221 * the CHOICE component we will set the pointer to this stored value. |
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222 * Then we will use pstructOffs for pointing to the next element. |
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223 */ |
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224 old_pstruct = globs->pstruct; |
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225 globs->pstruct += (globs->pstructOffs + sizeof(T_ENUM)); |
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226 |
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227 #ifdef DYNAMIC_ARRAYS |
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228 /* |
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229 * Dereference pointer if this is a pointer types (dynamic arrays) |
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230 * globs->pstruct was saved above, so no need to do it again. |
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231 */ |
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232 if ( is_pointer_type(e_ref) ) { |
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233 if (ccd_check_pointer(*(U8 **)(globs->pstruct)) == ccdOK) |
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234 globs->pstruct = *(U8 **)(globs->pstruct); |
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235 else { |
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236 ccd_recordFault (globs, ERR_INVALID_PTR, BREAK, (USHORT) e_ref, |
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237 &globs->pstruct[globs->pstructOffs]); |
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238 return; |
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239 } |
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240 } |
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241 #endif |
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242 |
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243 elem_ref = mcomp[c_ref].componentRef + (USHORT) UnionTag; |
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244 |
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245 /* |
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246 * Call the decode function for the chosen element. |
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247 */ |
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248 (void) codec[melem[elem_ref].codingType][ENCODE_FUN] |
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249 (c_ref, elem_ref, globs); |
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250 /* |
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251 * Prepare for encoding the next element. |
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252 */ |
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253 globs->pstruct = old_pstruct; |
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254 } |
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255 #endif /* !RUN_INT_RAM */ |
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256 |
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257 #ifndef RUN_INT_RAM |
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258 /* |
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259 +--------------------------------------------------------------------+ |
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260 | PROJECT : CCD (6144) MODULE : asn1_choice | |
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261 | STATE : code ROUTINE : cdc_asn1_choice_encode | |
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262 +--------------------------------------------------------------------+ |
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263 |
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264 PURPOSE : Encoding of CHOICE type for UMTS |
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265 The size of the union tag must be calculated. Then its value |
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266 is written in the air message. |
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267 For encoding the CHOICE alternative itself, call the same |
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268 function as for extensible CHOICE types. |
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269 */ |
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270 SHORT cdc_asn1_choice_encode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs) |
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271 { |
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272 T_ENUM UnionTag=0; /* default: only one alternative */ |
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273 ULONG num_of_comps, mcomp_ref; |
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274 |
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275 mcomp_ref = (ULONG) melem[e_ref].elemRef; |
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276 |
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277 #ifdef DEBUG_CCD |
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278 #ifndef CCD_SYMBOLS |
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279 TRACE_CCD (globs, "cdc_asn1_choice_encode()"); |
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280 #else |
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281 TRACE_CCD (globs, "cdc_asn1_choice_encode() %s", mcomp[mcomp_ref].name); |
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282 #endif |
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283 #endif |
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284 |
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285 /* Don't do anything for empty choices */ |
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286 if (mcomp[mcomp_ref].numOfComponents == 0) |
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287 { |
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288 return 1; |
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289 } |
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290 |
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291 globs->pstructOffs = melem[e_ref].structOffs; |
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292 |
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293 /* For optional elements we have already set the valid flag in the |
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294 * C-structure. We have done it while processing ASN1_SEQ. |
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295 */ |
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296 if ( ! cdc_isPresent(e_ref, globs) ) |
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297 return 1; |
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298 |
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299 /* |
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300 * Get the value of CHOICE index (= union controller) from the C-structure. |
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301 * Check its correctness. Write it in the air message. |
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302 * Afterwards encode the chosen CHOICE altervative. |
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303 */ |
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304 num_of_comps = mcomp[mcomp_ref].numOfComponents; |
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305 /* CHOICE index is encoded only if there are more than one alternatives. */ |
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306 if (num_of_comps NEQ 1) |
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307 { |
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308 UnionTag = *(T_ENUM *) (globs->pstruct+globs->pstructOffs); |
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309 if (UnionTag >= (T_ENUM)num_of_comps) |
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310 { |
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311 ccd_recordFault (globs, ERR_ASN1_ENCODING, BREAK, (USHORT) e_ref, |
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312 globs->pstruct+globs->pstructOffs); |
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313 } |
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314 bf_writeVal ((ULONG) UnionTag, (ULONG) bitSize[num_of_comps], globs); |
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315 } |
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316 PER_Encode_ASN1_CHOICE_alterative (e_ref, UnionTag, globs); |
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317 |
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318 return 1; |
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319 } |
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320 #endif /* !RUN_INT_RAM */ |