FreeCalypso > hg > fc-magnetite
annotate src/gpf3/ccd/s_padding_0.c @ 88:46d9d68a3911
top Makefile: support building flash images for the C139
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 02 Oct 2016 14:11:29 +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 : s_padding_0.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 S_PADDING_0 |
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18 +----------------------------------------------------------------------------- |
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19 */ |
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20 |
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21 |
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22 /* |
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23 * standard definitions like GLOBAL, UCHAR, ERROR etc. |
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24 */ |
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25 #include "typedefs.h" |
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26 #include "header.h" |
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27 |
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28 /* |
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29 * 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 of ccd internal functions |
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43 */ |
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44 #include "ccd.h" |
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45 |
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46 /* |
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47 * Declaration of coder/decoder tables |
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48 */ |
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49 #include "ccdtable.h" |
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50 #include "ccddata.h" |
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51 |
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52 #ifndef RUN_FLASH |
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53 /* |
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54 +--------------------------------------------------------------------+ |
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55 | PROJECT : CCD MODULE : s_padding_0 | |
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56 | STATE : code ROUTINE : cdc_padd_0_decode | |
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57 +--------------------------------------------------------------------+ |
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58 |
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59 PURPOSE : Decoding of the GSM Type CSN1 spare padding which is |
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60 preceded by a 0 bit. |
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61 If that bit is read as 1 then a protocol extension is |
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62 assumed by CCD. |
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63 This function does not evaluate the encoded bits, since |
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64 their content is irrelevant. |
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65 */ |
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66 |
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67 SHORT cdc_padd_0_decode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs) |
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68 { |
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69 U16 cixRef; |
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70 #ifdef DEBUG_CCD |
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71 TRACE_CCD (globs, "cdc_padd_0_decode()"); |
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72 #endif |
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73 |
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74 if (bf_readBit(globs) == 1) |
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75 { |
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76 ccd_recordFault (globs, ERR_PROTOCOL_EXTENSION, CONTINUE, (USHORT) e_ref, NULL); |
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77 } |
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78 |
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79 /* |
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80 * Do not decode padding bits. They are not relevant. |
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81 * Just adjust the position pointer in the bit stream buffer. |
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82 * Either to the next octet boundary or to the message end, if necessary. |
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83 */ |
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84 bf_incBitpos (8-(globs->bitpos & 7), globs); |
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85 |
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86 /* First assume padding bits up to an octet boundary. In this case |
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87 * message extension could be made of T, TV or TLV types. |
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88 */ |
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89 globs->SeekTLVExt = TRUE; |
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90 |
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91 cixRef = melem[e_ref].calcIdxRef; |
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92 if (calcidx[cixRef].numPrologSteps > 0) |
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93 { |
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94 U16 msgEnd = (USHORT) calc[calcidx[cixRef].prologStepRef].operand * 8; |
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95 if (msgEnd) |
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96 { |
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97 msgEnd += globs->bitoffs; |
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98 msgEnd = (USHORT)MINIMUM(globs->maxBitpos, msgEnd); |
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99 bf_setBitpos (msgEnd, globs); |
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100 /* |
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101 * Padding bytes exclude the presence of message extension. |
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102 */ |
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103 globs->SeekTLVExt = FALSE; |
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104 } |
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105 } |
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106 return 1; |
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107 } |
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108 #endif /* !RUN_FLASH */ |
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109 |
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110 #ifndef RUN_FLASH |
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111 /* |
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112 +--------------------------------------------------------------------+ |
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113 | PROJECT : CCD MODULE : s_padding_0.c | |
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114 | STATE : code ROUTINE : cdc_padd_0_encode | |
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115 +--------------------------------------------------------------------+ |
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116 |
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117 PURPOSE : Encoding of the GSM Type CSN1 spare padding which is |
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118 preceded by a 0 bit. |
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119 Supported padding values are 0x00 and 0x2B. |
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120 If the first prologue step is a value msg_len, padding |
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121 is done until globs->bitpos is msg_len*8. |
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122 Otherwise until the octet boundary. |
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123 */ |
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124 |
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125 SHORT cdc_padd_0_encode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs) |
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126 { |
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127 U8 padd_bit = 0; |
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128 U16 cixRef; |
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129 U16 msgLen = globs->buflen; |
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130 BOOL paddingOctets = FALSE; |
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131 |
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132 #ifdef DEBUG_CCD |
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133 TRACE_CCD (globs, "cdc_padd_0_encode()"); |
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134 #endif |
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135 |
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136 cixRef = melem[e_ref].calcIdxRef; |
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137 |
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138 /* |
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139 * if this element is conditional, check the condition |
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140 */ |
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141 if (calcidx[cixRef].numCondCalcs NEQ 0 |
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142 AND ! ccd_conditionOK (e_ref, globs)) |
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143 return 1; |
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144 |
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145 if (calcidx[cixRef].numPrologSteps > 0) |
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146 { |
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147 if (calc[calcidx[cixRef].prologStepRef].operation NEQ 'P') |
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148 ccd_setError (globs, ERR_INTERNAL_ERROR, BREAK, (USHORT) -1); |
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149 else |
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150 { |
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151 msgLen = (USHORT)(calc[calcidx[cixRef].prologStepRef].operand * 8); |
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152 paddingOctets = TRUE; |
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153 } |
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154 } |
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155 |
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156 /* |
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157 * If there is some space left for spare padding, we will code them. |
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158 * If the bit pos pointer goes beyond the message border, ccd will detect |
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159 * this later and bring a warning. But not here. Reason: saving room. |
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160 */ |
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161 if (globs->bitpos - globs->bitoffs < msgLen ) |
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162 { |
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163 /* |
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164 * The IE should be present in the message so we code 0 bit. |
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165 */ |
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166 bf_writeBit (0, globs); |
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167 |
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168 if (melem[e_ref].elemType EQ 'S' AND spare[melem[e_ref].elemRef].bSize EQ 8) |
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169 { |
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170 ULONG spareVal = spare[melem[e_ref].elemRef].value; |
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171 /* |
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172 * Element is a SPARE of length 8. |
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173 */ |
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174 while (globs->bitpos % 8 NEQ 0) |
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175 { |
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176 switch(spareVal) |
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177 { |
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178 case 0: |
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179 break; |
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180 case 0x2B: |
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181 padd_bit = (UBYTE)GET_HL(0); |
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182 break; |
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183 default: |
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184 ccd_setError (globs, ERR_INTERNAL_ERROR, |
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185 BREAK, |
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186 (USHORT) (globs->bitpos), |
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187 (USHORT) -1); |
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188 } |
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189 bf_writeBit (padd_bit, globs); |
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190 } |
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191 |
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192 /* Write spare padding octets. */ |
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193 if (paddingOctets) |
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194 { |
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195 while (globs->bitpos - globs->bitoffs < msgLen ) |
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196 { |
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197 bf_codeLongNumber (8, spareVal, globs); |
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198 } |
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199 } |
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200 } |
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201 |
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202 else |
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203 { |
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204 ccd_setError (globs, ERR_INVALID_TYPE, |
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205 BREAK, |
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206 (USHORT) (globs->bitpos), |
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207 (USHORT) -1); |
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208 } |
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209 } |
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210 |
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211 return 1; |
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212 } |
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213 #endif /* !RUN_FLASH */ |