1 | /**************************************************************************
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2 | *
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3 | * bitio_mems.c -- Functions for bitio to memory (random access)
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4 | * Copyright (C) 1994 Neil Sharman
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5 | *
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6 | * This program is free software; you can redistribute it and/or modify
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7 | * it under the terms of the GNU General Public License as published by
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8 | * the Free Software Foundation; either version 2 of the License, or
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9 | * (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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19 | *
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20 | * $Id: bitio_mems.c 439 1999-08-10 21:23:37Z sjboddie $
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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 | $Log$
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26 | Revision 1.1 1999/08/10 21:16:45 sjboddie
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27 | renamed mg-1.3d directory mg
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28 |
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29 | Revision 1.1 1998/11/17 09:31:48 rjmcnab
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30 | *** empty log message ***
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31 |
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32 | * Revision 1.1 1994/08/22 00:24:39 tes
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33 | * Initial placement under CVS.
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34 | *
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35 | */
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36 |
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37 | static char *RCSID = "$Id: bitio_mems.c 439 1999-08-10 21:23:37Z sjboddie $";
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38 |
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39 |
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40 | #include "sysfuncs.h"
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41 |
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42 | #include "bitio_m_mems.h"
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43 | #include "bitio_m.h"
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44 |
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45 | int fprintf (FILE *, const char *,...);
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46 |
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47 |
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48 |
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49 | void
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50 | BIO_Mems_Encode_Start (unsigned char *buf, unsigned long pos,
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51 | mems_bitio_state * bs)
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52 | {
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53 | ENCODE_START (buf, pos)
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54 | ENCODE_PAUSE (*bs)
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55 | }
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56 |
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57 | void
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58 | BIO_Mems_Encode_Done (mems_bitio_state * bs)
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59 | {
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60 | ENCODE_CONTINUE (*bs)
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61 | ENCODE_DONE
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62 | }
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63 |
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64 |
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65 | void
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66 | BIO_Mems_Decode_Start (unsigned char *buf, unsigned long pos,
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67 | mems_bitio_state * bs)
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68 | {
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69 | DECODE_START (buf, pos)
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70 | DECODE_PAUSE (*bs)
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71 | }
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72 |
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73 |
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74 |
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75 |
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76 | void
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77 | BIO_Mems_Unary_Encode (unsigned long val, mems_bitio_state * bs,
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78 | unsigned long *bits)
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79 | {
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80 | ENCODE_CONTINUE (*bs)
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81 | if (bits)
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82 | UNARY_ENCODE_L (val, *bits);
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83 | else
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84 | UNARY_ENCODE (val);
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85 | ENCODE_PAUSE (*bs)
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86 | }
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87 |
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88 |
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89 | unsigned long
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90 | BIO_Mems_Unary_Decode (mems_bitio_state * bs,
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91 | unsigned long *bits)
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92 | {
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93 | register unsigned long val;
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94 | DECODE_CONTINUE (*bs)
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95 | if (bits)
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96 | UNARY_DECODE_L (val, *bits);
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97 | else
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98 | UNARY_DECODE (val);
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99 | DECODE_PAUSE (*bs)
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100 | return (val);
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101 | }
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102 |
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103 |
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104 |
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105 |
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106 |
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107 |
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108 |
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109 | void
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110 | BIO_Mems_Binary_Encode (unsigned long val, unsigned long b,
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111 | mems_bitio_state * bs, unsigned long *bits)
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112 | {
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113 | ENCODE_CONTINUE (*bs)
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114 | if (bits)
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115 | BINARY_ENCODE_L (val, b, *bits);
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116 | else
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117 | BINARY_ENCODE (val, b);
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118 | ENCODE_PAUSE (*bs)
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119 | }
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120 |
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121 |
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122 | unsigned long
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123 | BIO_Mems_Binary_Decode (unsigned long b, mems_bitio_state * bs,
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124 | unsigned long *bits)
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125 | {
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126 | register unsigned long val;
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127 | DECODE_CONTINUE (*bs)
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128 | if (bits)
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129 | BINARY_DECODE_L (val, b, *bits);
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130 | else
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131 | BINARY_DECODE (val, b);
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132 | DECODE_PAUSE (*bs)
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133 | return (val);
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134 | }
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135 |
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136 |
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137 |
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138 |
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139 |
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140 |
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141 |
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142 | void
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143 | BIO_Mems_Gamma_Encode (unsigned long val, mems_bitio_state * bs,
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144 | unsigned long *bits)
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145 | {
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146 | ENCODE_CONTINUE (*bs)
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147 | if (bits)
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148 | GAMMA_ENCODE_L (val, *bits);
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149 | else
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150 | GAMMA_ENCODE (val);
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151 | ENCODE_PAUSE (*bs)
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152 | }
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153 |
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154 |
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155 | unsigned long
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156 | BIO_Mems_Gamma_Decode (mems_bitio_state * bs, unsigned long *bits)
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157 | {
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158 | register unsigned long val;
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159 | DECODE_CONTINUE (*bs)
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160 | if (bits)
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161 | GAMMA_DECODE_L (val, *bits);
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162 | else
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163 | GAMMA_DECODE (val);
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164 | DECODE_PAUSE (*bs)
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165 | return (val);
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166 | }
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167 |
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168 |
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169 |
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170 |
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171 | void
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172 | BIO_Mems_Delta_Encode (unsigned long val, mems_bitio_state * bs,
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173 | unsigned long *bits)
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174 | {
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175 | ENCODE_CONTINUE (*bs)
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176 | if (bits)
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177 | DELTA_ENCODE_L (val, *bits);
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178 | else
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179 | DELTA_ENCODE (val);
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180 | ENCODE_PAUSE (*bs)
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181 | }
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182 |
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183 |
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184 | unsigned long
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185 | BIO_Mems_Delta_Decode (mems_bitio_state * bs, unsigned long *bits)
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186 | {
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187 | register unsigned long val;
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188 | DECODE_CONTINUE (*bs)
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189 | if (bits)
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190 | DELTA_DECODE_L (val, *bits);
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191 | else
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192 | DELTA_DECODE (val);
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193 | DECODE_PAUSE (*bs)
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194 | return (val);
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195 | }
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196 |
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197 | void
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198 | BIO_Mems_Elias_Encode (unsigned long val, unsigned long b, double s,
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199 | mems_bitio_state * bs, unsigned long *bits)
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200 | {
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201 | ENCODE_CONTINUE (*bs)
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202 | if (bits)
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203 | ELIAS_ENCODE_L (val, b, s, *bits);
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204 | else
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205 | ELIAS_ENCODE (val, b, s);
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206 | ENCODE_PAUSE (*bs)
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207 | }
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208 |
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209 |
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210 | unsigned long
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211 | BIO_Mems_Elias_Decode (unsigned long b, double s,
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212 | mems_bitio_state * bs, unsigned long *bits)
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213 | {
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214 | register unsigned long val;
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215 | DECODE_CONTINUE (*bs)
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216 | if (bits)
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217 | ELIAS_DECODE_L (val, b, s, *bits);
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218 | else
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219 | ELIAS_DECODE (val, b, s);
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220 | DECODE_PAUSE (*bs)
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221 | return (val);
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222 | }
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223 |
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224 | void
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225 | BIO_Mems_Bblock_Encode (unsigned long val, unsigned long b,
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226 | mems_bitio_state * bs, unsigned long *bits)
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227 | {
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228 | ENCODE_CONTINUE (*bs)
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229 | if (bits)
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230 | BBLOCK_ENCODE_L (val, b, *bits);
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231 | else
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232 | BBLOCK_ENCODE (val, b);
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233 | ENCODE_PAUSE (*bs)
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234 | }
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235 |
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236 |
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237 | unsigned long
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238 | BIO_Mems_Bblock_Decode (unsigned long b, mems_bitio_state * bs,
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239 | unsigned long *bits)
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240 | {
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241 | register unsigned long val;
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242 | DECODE_CONTINUE (*bs)
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243 | if (bits)
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244 | BBLOCK_DECODE_L (val, b, *bits);
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245 | else
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246 | BBLOCK_DECODE (val, b);
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247 | DECODE_PAUSE (*bs)
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248 | return (val);
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249 | }
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250 |
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251 | void
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252 | BIO_Mems_Decode_Seek (unsigned long pos, mems_bitio_state * bs)
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253 | {
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254 | DECODE_CONTINUE (*bs)
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255 | DECODE_SEEK (pos);
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256 | DECODE_PAUSE (*bs)
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257 | }
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258 |
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259 | void
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260 | BIO_Mems_Encode_Seek (unsigned long pos, mems_bitio_state * bs)
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261 | {
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262 | ENCODE_CONTINUE (*bs)
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263 | ENCODE_SEEK (pos);
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264 | ENCODE_PAUSE (*bs)
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265 | }
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