FreeCalypso > hg > fc-magnetite
annotate src/gpf3/ccd/csn1_concat.c @ 84:42d766231c46
armio.c: support for C139 and Pirelli targets
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 02 Oct 2016 07:44:36 +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 : csn1_concat.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 : Condat Conder Decoder - |
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18 | Definition of encoding and decoding functions of |
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19 | CSN1 truncated concatenation elements |
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20 +----------------------------------------------------------------------------- |
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21 */ |
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22 |
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23 |
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24 /* |
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25 * Standard definitions like GLOBAL, UCHAR, ERROR etc. |
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26 */ |
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27 |
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28 #include "typedefs.h" |
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29 #include "header.h" |
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30 |
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31 /* |
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32 * Prototypes of ccd (USE_DRIVER EQ undef) for prototypes only |
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33 * look at ccdapi.h |
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34 */ |
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35 #undef USE_DRIVER |
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36 #include "ccdapi.h" |
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37 |
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38 /* |
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39 * Types and functions for bit access and manipulation |
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40 */ |
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41 #include "ccd_globs.h" |
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42 #include "bitfun.h" |
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43 |
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44 /* |
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45 * Prototypes of ccd internal functions |
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46 */ |
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47 #include "ccd.h" |
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48 #include "ccd_codingtypes.h" |
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49 |
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50 /* |
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51 * Declaration of coder/decoder tables |
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52 */ |
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53 #include "ccdtable.h" |
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54 #include "ccddata.h" |
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55 |
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56 EXTERN T_FUNC_POINTER codec[MAX_CODEC_ID+1][2]; |
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57 |
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58 #ifndef RUN_FLASH |
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59 /* |
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60 +---------------------------------------------------------------------+ |
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61 | PROJECT : CCD (6144) MODULE : CCD | |
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62 | STATE : code ROUTINE : cdc_csn1_concat_decode | |
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63 +---------------------------------------------------------------------+ |
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64 |
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65 PURPOSE : decodes the bitstream to a C-Structure.The decoding |
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66 rules contains the element definitions for the |
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67 elements of this message. |
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68 This function may called recursivly because of a |
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69 substructured element definition. |
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70 */ |
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71 |
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72 SHORT cdc_csn1_concat_decode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs) |
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73 { |
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74 /* |
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75 * index in table melem |
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76 */ |
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77 ULONG elem_ref, last_elem, start_elem; |
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78 SHORT codecRet; |
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79 U8 *actStructpos; |
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80 U8 actErrLabel; |
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81 U16 actMaxBitpos, finalBitPos; |
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82 U8 *pnumConcatElem = NULL; |
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83 ULONG i, num_concat_elem; |
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84 BOOL SetPosExpected = FALSE; |
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85 ULONG cix_ref, num_prolog_steps, prolog_step_ref; |
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86 |
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87 #ifdef DEBUG_CCD |
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88 #ifndef CCD_SYMBOLS |
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89 TRACE_CCD (globs, "cdc_csn1_concat_decode()"); |
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90 #else |
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91 TRACE_CCD (globs, "cdc_csn1_concat_decode() %s", ccddata_get_alias((USHORT) e_ref, 1)); |
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92 #endif |
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93 #endif |
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94 |
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95 actErrLabel = globs->errLabel; |
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96 |
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97 /* Set ref number for calcidx table. */ |
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98 cix_ref = melem[e_ref].calcIdxRef; |
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99 num_prolog_steps = calcidx[cix_ref].numPrologSteps; |
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100 prolog_step_ref = calcidx[cix_ref].prologStepRef; |
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101 |
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102 /* |
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103 * If this element is conditional, check the condition. |
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104 */ |
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105 if (calcidx[cix_ref].numCondCalcs NEQ 0 |
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106 AND ! ccd_conditionOK (e_ref, globs)) |
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107 return 1; |
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108 |
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109 /* |
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110 * if this element have a defined Prolog |
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111 * we have to process it before decoding the bitstream |
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112 */ |
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113 if (num_prolog_steps) |
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114 { |
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115 ccd_performOperations (num_prolog_steps, prolog_step_ref, globs); |
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116 } |
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117 |
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118 globs->ccd_recurs_level++; |
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119 |
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120 if (globs->bitpos < globs->maxBitpos) |
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121 { |
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122 if (melem[e_ref].repType == 's') |
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123 { |
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124 BOOL is_variable; |
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125 ULONG max_rep, repeat; |
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126 |
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127 is_variable = ccd_calculateRep (e_ref, &repeat, &max_rep, globs); |
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128 if (repeat > (ULONG) (globs->maxBitpos-globs->bitpos)) |
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129 { |
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130 ccd_recordFault (globs, ERR_MAX_REPEAT, CONTINUE, |
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131 (USHORT) e_ref, globs->pstruct + globs->pstructOffs); |
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132 repeat = MINIMUM (repeat, (ULONG) (globs->maxBitpos-globs->bitpos)); |
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133 } |
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134 |
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135 finalBitPos = (USHORT) (globs->bitpos + repeat); |
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136 |
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137 #ifdef DEBUG_CCD |
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138 #ifdef CCD_SYMBOLS |
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139 TRACE_CCD (globs, "decoding of concatenation %s as a bit array", |
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140 mcomp[melem[e_ref].elemRef].name); |
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141 #else |
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142 TRACE_CCD (globs, "decoding of concatenation %d as a bit array", melem[e_ref].elemRef); |
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143 #endif |
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144 #endif |
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145 /* Store the limit. The truncated concatenation may contain |
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146 other compositions as bitstring. */ |
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147 actMaxBitpos = globs->maxBitpos; |
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148 globs->maxBitpos = finalBitPos; |
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149 } |
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150 else |
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151 { |
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152 #ifdef DEBUG_CCD |
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153 #ifdef CCD_SYMBOLS |
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154 TRACE_CCD (globs, "decoding concatenation %s", |
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155 mcomp[melem[e_ref].elemRef].name); |
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156 #else |
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157 TRACE_CCD (globs, "decoding concatenation %d", melem[e_ref].elemRef); |
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158 #endif |
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159 #endif |
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160 } |
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161 |
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162 /* |
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163 * Store the actual structure position. |
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164 */ |
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165 actStructpos = globs->pstruct; |
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166 globs->pstructOffs = melem[e_ref].structOffs; |
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167 globs->pstruct += globs->pstructOffs; |
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168 /* |
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169 * setup the index in the melem table for this composition. |
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170 */ |
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171 elem_ref = (ULONG) mcomp[melem[e_ref].elemRef].componentRef; |
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172 last_elem = elem_ref + mcomp[melem[e_ref].elemRef].numOfComponents; |
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173 /* |
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174 * It is recommended to use a leading element of coding type NO_CODE |
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175 * in the message description which is used to count the existing |
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176 * elements of the truncated concatenation. If this element is missing |
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177 * the decoding process will proceed but the CCD user is forced to |
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178 * evaluate all of the valid flags. |
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179 */ |
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180 |
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181 if (melem[elem_ref].codingType == CCDTYPE_NO_CODE) |
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182 { |
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183 pnumConcatElem = globs->pstruct; |
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184 elem_ref++; |
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185 |
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186 num_concat_elem = (ULONG) (mcomp[melem[e_ref].elemRef].numOfComponents - 1); |
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187 } |
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188 |
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189 start_elem = elem_ref; |
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190 /* |
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191 * decode all elements |
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192 */ |
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193 while (elem_ref < last_elem) |
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194 |
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195 { |
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196 #ifdef ERR_TRC_STK_CCD |
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197 /* save the value for tracing in error case */ |
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198 globs->error_stack[globs->ccd_recurs_level] = (USHORT) elem_ref; |
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199 #endif /* ERR_TRC_STK_CCD */ |
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200 |
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201 /* |
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202 * check if the bitstream has ended |
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203 */ |
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204 if (bf_endOfBitstream(globs) AND !globs->TagPending) |
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205 { |
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206 /* End of the bit stream is not reached if a call to bf_setBitpos() |
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207 * is expected for the next element of the current substructure. |
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208 * An instructive example is an empty "mob_id" |
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209 */ |
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210 cix_ref = melem[elem_ref].calcIdxRef; |
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211 num_prolog_steps = calcidx[cix_ref].numPrologSteps; |
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212 prolog_step_ref = calcidx[cix_ref].prologStepRef; |
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213 |
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214 if (num_prolog_steps) |
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215 { |
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216 i = prolog_step_ref + num_prolog_steps; |
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217 |
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218 while (i >= prolog_step_ref) |
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219 { |
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220 if (calc[i].operation == 'S') |
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221 { |
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222 SetPosExpected = TRUE; |
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223 break; |
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224 } |
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225 i--; |
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226 } |
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227 } |
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228 |
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229 if (SetPosExpected EQ FALSE) |
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230 { |
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231 num_concat_elem = elem_ref - start_elem; |
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232 /* after the while loop the recursion level will be decremented. */ |
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233 break; |
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234 } |
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235 |
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236 }//if end of bit string |
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237 |
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238 /* |
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239 * use the jump-table for selecting the decode function |
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240 */ |
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241 codecRet = |
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242 codec[melem[elem_ref].codingType][DECODE_FUN](melem[e_ref].elemRef, |
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243 elem_ref, globs); |
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244 if (codecRet NEQ 0x7f) |
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245 { |
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246 /* |
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247 * set the elem_ref to the next or the same element |
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248 */ |
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249 elem_ref += codecRet; |
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250 } |
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251 } |
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252 |
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253 if (pnumConcatElem != NULL) |
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254 { |
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255 *pnumConcatElem = (UBYTE) num_concat_elem; |
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256 } |
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257 |
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258 |
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259 if (melem[e_ref].repType == 's') |
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260 { |
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261 if (globs->bitpos > finalBitPos) |
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262 { |
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263 ccd_recordFault (globs, ERR_CONCAT_LEN, CONTINUE, (USHORT) elem_ref, |
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264 globs->pstruct + globs->pstructOffs); |
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265 } |
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266 bf_setBitpos (finalBitPos, globs); |
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267 /* Update maxBitpos to avoid an early end of decoding. */ |
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268 globs->maxBitpos = actMaxBitpos; |
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269 } |
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270 |
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271 /* |
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272 * restore the write pointer |
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273 */ |
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274 globs->pstruct = actStructpos; |
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275 } |
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276 |
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277 globs->errLabel = actErrLabel; |
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278 /* Reset indicator of exhaustion in the IEI table*/ |
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279 for (i = 0; globs->iei_ctx[globs->ccd_recurs_level].iei_table[i].valid == TRUE; i++) |
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280 { |
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281 globs->iei_ctx[globs->ccd_recurs_level].iei_table[i].exhausted = FALSE; |
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282 } |
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283 globs->ccd_recurs_level--; |
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284 |
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285 return 1; |
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286 } |
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287 #endif /* !RUN_FLASH */ |
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288 |
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289 #ifndef RUN_FLASH |
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290 /* |
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291 +---------------------------------------------------------------------+ |
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292 | PROJECT : CCD (6144) MODULE : CCD | |
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293 | STATE : code ROUTINE : cdc_csn1_concat_encode | |
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294 +---------------------------------------------------------------------+ |
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295 |
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296 PURPOSE : codes the content of a C-Structure into a bitstream. |
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297 This function may be called recursivly if an IE in the |
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298 structure is itself a structured IE. |
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299 */ |
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300 |
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301 SHORT cdc_csn1_concat_encode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs) |
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302 |
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303 { |
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304 ULONG cix_ref, elem_ref, last_elem; |
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305 U8 codecRet; |
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306 U16 actBitpos; |
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307 U8 actByteOffs; |
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308 U8 *actStructpos; |
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309 |
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310 #ifdef DEBUG_CCD |
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311 #ifndef CCD_SYMBOLS |
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312 TRACE_CCD (globs, "cdc_csn1_concat_encode()"); |
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313 #else |
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314 TRACE_CCD (globs, "cdc_csn1_concat_encode() %s", ccddata_get_alias((USHORT) e_ref, 1)); |
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315 #endif |
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316 #endif |
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317 |
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318 cix_ref = melem[e_ref].calcIdxRef; |
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319 |
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320 /* |
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321 * If this element is conditional, check the condition. |
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322 */ |
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323 if (calcidx[cix_ref].numCondCalcs NEQ 0 |
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324 AND ! ccd_conditionOK (e_ref, globs)) |
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325 return 1; |
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326 |
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327 globs->ccd_recurs_level++; |
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328 |
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329 actStructpos = globs->pstruct; |
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330 globs->pstructOffs = melem[e_ref].structOffs; |
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331 globs->pstruct += globs->pstructOffs; |
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332 |
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333 elem_ref = (ULONG) mcomp[melem[e_ref].elemRef].componentRef; |
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334 last_elem = elem_ref + mcomp[melem[e_ref].elemRef].numOfComponents; |
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335 |
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336 /* |
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337 * It is recommended to use a leading element of coding type NO_CODE |
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338 * in the message description which is used to count the existing |
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339 * elements of the truncated concatenation in case of decoding. |
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340 * In case of encoding this element must be skipped. |
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341 */ |
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342 |
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343 if (melem[elem_ref].codingType == CCDTYPE_NO_CODE) |
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344 { |
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345 elem_ref++; |
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346 /* last_elem = elem_ref + *globs->pstruct; |
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347 |
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348 * Encoding act on the assumption that all elements of the truncated |
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349 * concatenation should be encoded. CCD will skip tagged elements |
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350 * but in case of CSN1 coding CCD will write the flag indicating absent |
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351 * elements. Values of mandatory elements without valid flags are coded |
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352 * according to their assignments in the C-structure. |
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353 * If more bits are written than the component l_buf of the message buffer |
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354 * suggested CCD generates a warning (error code ERR_BUFFER_OF). It is up |
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355 * to the user to analyse the consequences of this warning and to choose |
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356 * adequate procedures. |
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357 */ |
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358 } |
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359 |
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360 /* |
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361 * code all elements |
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362 */ |
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363 while ((elem_ref < last_elem) && (globs->bitpos < globs->msgLen)) |
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364 { |
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365 #ifdef ERR_TRC_STK_CCD |
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366 /* |
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367 * Save the value for tracing in error case. |
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368 */ |
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369 globs->error_stack[globs->ccd_recurs_level] = (USHORT) elem_ref; |
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370 #endif /* ERR_TRC_STK_CCD */ |
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371 |
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372 #if defined _TOOLS_ |
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373 if (ccd_patch (globs, 0)) |
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374 codecRet = 1; |
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375 else |
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376 #endif /* _TOOLS_ */ |
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377 |
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378 actBitpos = globs->bitpos; |
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379 actByteOffs = globs->byteoffs; |
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380 |
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381 /* Use the jump-table for selecting encode function. */ |
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382 codecRet = (UBYTE) |
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383 codec[melem[elem_ref].codingType][ENCODE_FUN](melem[e_ref].elemRef, |
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384 elem_ref, globs); |
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385 |
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386 if (globs->bitpos < globs->msgLen) |
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387 { |
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388 if (codecRet NEQ 0x7f) |
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389 { |
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390 /* Set the elem_ref to the next or the same element. */ |
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391 elem_ref += codecRet; |
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392 } |
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393 } |
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394 else |
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395 { |
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396 if (globs->bitpos > globs->msgLen) |
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397 { |
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398 globs->bitpos = actBitpos; |
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399 globs->byteoffs = actByteOffs; |
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400 ccd_recordFault (globs, ERR_CONCAT_LEN, CONTINUE, (USHORT) elem_ref, |
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401 globs->pstruct + globs->pstructOffs); |
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402 } |
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403 break; |
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404 } |
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405 } |
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406 |
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407 globs->pstruct += mcomp[melem[e_ref].elemRef].cSize; |
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408 /* |
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409 * restore the read pointer |
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410 */ |
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411 globs->pstruct = actStructpos; |
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412 globs->ccd_recurs_level--; |
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413 return 1; |
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414 } |
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415 #endif /* !RUN_FLASH */ |