FreeCalypso > hg > fc-magnetite
annotate src/gpf3/ccd/break_cond.c @ 634:6edd9be81b94
doc/Leonardo-target: update for Tango and Caramel
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 04 Jan 2020 20:48:07 +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 : break_cond.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 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 BREAK_COND |
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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 /* |
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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 /* |
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30 * Prototypes of ccd (USE_DRIVER EQ undef) for prototypes only |
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31 * look at ccdapi.h |
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32 */ |
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33 #undef USE_DRIVER |
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34 #include "ccdapi.h" |
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35 |
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36 /* |
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37 * Types and functions for bit access and manipulation |
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38 */ |
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39 #include "ccd_globs.h" |
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40 #include "bitfun.h" |
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41 |
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42 /* |
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43 * Prototypes of ccd internal functions |
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44 */ |
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45 #include "ccd.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 #ifndef RUN_INT_RAM |
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54 /* |
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55 +-----------------------------------------------------------------------------+ |
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56 | PROJECT : CCD (6144) MODULE : CDC_GSM | |
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57 | STATE : code ROUTINE : cdc_break_cond_decode | |
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58 +-----------------------------------------------------------------------------+ |
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59 |
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60 PURPOSE : Decoding of the BREAK_COND element. This element consists of a V |
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61 component with a variable bit length and must be connected with a |
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62 special condition. This condition has to be a simple value, which |
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63 matches to the value range of BREAK_COND element itself. |
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64 This function performs a standard decoding for a given elem table |
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65 entry. This means for non structured elements that 1-n bits are |
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66 read from the bitstream and write to a C-Variable in a machine |
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67 dependent format. |
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68 After decoding of the requested number of bits the resulting value |
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69 will be compared with the constant given by the condition. In case |
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70 of equality the global variable globs->continue_array is set to |
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71 FALSE. This breaks decoding of the current superior composition |
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72 and finishes the array. |
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73 */ |
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74 SHORT cdc_break_cond_decode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs) |
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75 { |
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76 U8 break_ind = FALSE; |
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77 ULONG cix_ref, num_prolog_steps, prolog_step_ref; |
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78 |
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79 #ifdef DEBUG_CCD |
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80 #ifndef CCD_SYMBOLS |
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81 TRACE_CCD (globs, "cdc_break_cond_decode()"); |
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82 #else |
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83 TRACE_CCD (globs, "cdc_break_cond_decode() %s", ccddata_get_alias((USHORT) e_ref, 1)); |
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84 #endif |
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85 #endif |
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86 |
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87 cix_ref = melem[e_ref].calcIdxRef; |
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88 num_prolog_steps = calcidx[cix_ref].numPrologSteps; |
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89 prolog_step_ref = calcidx[cix_ref].prologStepRef; |
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90 |
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91 /* |
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92 * if this element is conditional, check the condition |
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93 */ |
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94 if (calcidx[cix_ref].numCondCalcs NEQ 0 |
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95 AND ! ccd_conditionOK (e_ref, globs)) |
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96 return 1; |
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97 |
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98 /* |
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99 * if this element has a defined prologue |
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100 * we have to process it before decoding the bitstream |
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101 * If there are some epilogue expressions to be processed for this element |
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102 * (rare cases) the result here will be a reading of 0 to an internal |
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103 * register. The valid processing of expression takes place after the |
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104 * decoding of the element. |
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105 */ |
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106 if (num_prolog_steps) |
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107 { |
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108 if (calc[prolog_step_ref].operation EQ 'P') |
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109 { |
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110 break_ind = TRUE; |
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111 } |
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112 |
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113 ccd_performOperations (num_prolog_steps, prolog_step_ref, globs); |
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114 } |
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115 |
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116 globs->pstructOffs = melem[e_ref].structOffs; |
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117 |
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118 |
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119 if (globs->bitpos < globs->maxBitpos) |
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120 { |
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121 |
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122 if (mvar[melem[e_ref].elemRef].cType EQ 'X') |
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123 bf_readBitChunk (mvar[melem[e_ref].elemRef].bSize, globs); |
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124 else |
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125 bf_readBits (mvar[melem[e_ref].elemRef].bSize, globs); |
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126 |
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127 if ( ( break_ind == TRUE ) && (num_prolog_steps > 0)) |
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128 { |
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129 if ( calc[prolog_step_ref].operand == |
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130 (U16) *(globs->pstruct + globs->pstructOffs) ) |
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131 { |
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132 globs->continue_array = FALSE; |
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133 } |
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134 } |
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135 |
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136 globs->pstructOffs += mvar[melem[e_ref].elemRef].cSize; |
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137 } |
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138 else |
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139 ccd_recordFault ( globs, |
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140 ERR_ELEM_LEN, |
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141 BREAK, |
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142 (USHORT) e_ref, |
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143 globs->pstruct + globs->pstructOffs); |
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144 |
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145 /* |
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146 * process the epilogue expression for this element if there is any |
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147 */ |
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148 if (num_prolog_steps) |
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149 { |
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150 if ( (calc[prolog_step_ref+1].operation EQ 'K') |
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151 || (calc[prolog_step_ref+1].operation EQ 'C') |
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152 || (calc[prolog_step_ref+1].operation EQ 's')) |
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153 { |
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154 ccd_performOperations (num_prolog_steps, prolog_step_ref, globs); |
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155 } |
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156 } |
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157 |
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158 return 1; |
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159 } |
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160 #endif /* !RUN_INT_RAM */ |
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161 |
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162 #ifndef RUN_INT_RAM |
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163 /* |
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164 +-----------------------------------------------------------------------------+ |
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165 | PROJECT : CCD (6144) MODULE : CDC_GSM | |
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166 | STATE : code ROUTINE : cdc_break_cond_encode | |
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|
167 +-----------------------------------------------------------------------------+ |
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168 |
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169 PURPOSE : encoding of the BREAK_COND element. This element consists of a V |
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170 component with a variable bit length and must be connected with a |
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|
171 special condition. This condition has to be a simple value, which |
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|
172 matches to the value range of BREAK_COND element itself. |
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173 |
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|
174 */ |
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|
175 |
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|
176 SHORT cdc_break_cond_encode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs) |
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177 { |
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178 U8 break_ind = FALSE; |
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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 #ifndef CCD_SYMBOLS |
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|
183 TRACE_CCD (globs, "cdc_break_cond_encode()"); |
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184 #else |
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185 TRACE_CCD (globs, "cdc_break_cond_encode() %s", ccddata_get_alias((USHORT) e_ref, 1)); |
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|
186 #endif |
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|
187 #endif |
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|
188 |
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|
189 cix_ref = melem[e_ref].calcIdxRef; |
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|
190 num_prolog_steps = calcidx[cix_ref].numPrologSteps; |
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|
191 prolog_step_ref = calcidx[cix_ref].prologStepRef; |
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diff
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|
192 |
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|
193 /* |
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194 * if this element is conditional, check the condition |
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|
195 */ |
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|
196 if (calcidx[cix_ref].numCondCalcs NEQ 0 |
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|
197 AND ! ccd_conditionOK (e_ref, globs)) |
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|
198 return 1; |
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|
199 |
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|
200 /* |
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|
201 * if this element have a defined Prolog |
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|
202 * we have to process it before decoding the bitstream |
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parents:
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|
203 */ |
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|
204 if (num_prolog_steps) |
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parents:
diff
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|
205 { |
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diff
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|
206 if (calc[prolog_step_ref].operation EQ 'P') |
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parents:
diff
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|
207 { |
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diff
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|
208 break_ind = TRUE; |
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|
209 } |
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|
210 |
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parents:
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|
211 ccd_performOperations (num_prolog_steps, prolog_step_ref, globs); |
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parents:
diff
changeset
|
212 } |
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parents:
diff
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|
213 |
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parents:
diff
changeset
|
214 /* |
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diff
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|
215 * Element is not a SPARE. |
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|
216 * Setup the readpointer into the C-structure for this element |
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parents:
diff
changeset
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217 */ |
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218 globs->pstructOffs = melem[e_ref].structOffs; |
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219 |
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220 if (mvar[melem[e_ref].elemRef].cType EQ 'X') |
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221 bf_writeBitChunk (mvar[melem[e_ref].elemRef].bSize, globs); |
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222 else |
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223 bf_writeBits (mvar[melem[e_ref].elemRef].bSize, globs); |
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224 |
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225 if ( ( break_ind == TRUE ) && (num_prolog_steps > 0)) |
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226 { |
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227 if ( calc[prolog_step_ref].operand == |
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228 (U16) *(globs->pstruct + globs->pstructOffs) ) |
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229 { |
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230 globs->continue_array = FALSE; |
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231 } |
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232 } |
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233 |
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234 globs->pstructOffs += mvar[melem[e_ref].elemRef].cSize; |
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235 |
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236 return 1; |
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237 } |
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238 #endif /* !RUN_INT_RAM */ |