1 | /******************************************************************** |
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2 | * * |
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3 | * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. * |
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4 | * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * |
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5 | * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * |
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6 | * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * |
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7 | * * |
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8 | * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2002 * |
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9 | * by the Xiph.Org Foundation http://www.xiph.org/ * |
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10 | * * |
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11 | ******************************************************************** |
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12 | |
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13 | function: packing variable sized words into an octet stream |
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14 | last mod: $Id: bitwise.c 7675 2004-09-01 00:34:39Z xiphmont $ |
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15 | |
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16 | ********************************************************************/ |
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17 | |
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18 | /* We're 'LSb' endian; if we write a word but read individual bits, |
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19 | then we'll read the lsb first */ |
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20 | |
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21 | #include <string.h> |
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22 | #include <stdlib.h> |
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23 | #include <ogg/ogg.h> |
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24 | |
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25 | #define BUFFER_INCREMENT 256 |
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26 | |
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27 | static const unsigned long mask[]= |
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28 | {0x00000000,0x00000001,0x00000003,0x00000007,0x0000000f, |
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29 | 0x0000001f,0x0000003f,0x0000007f,0x000000ff,0x000001ff, |
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30 | 0x000003ff,0x000007ff,0x00000fff,0x00001fff,0x00003fff, |
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31 | 0x00007fff,0x0000ffff,0x0001ffff,0x0003ffff,0x0007ffff, |
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32 | 0x000fffff,0x001fffff,0x003fffff,0x007fffff,0x00ffffff, |
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33 | 0x01ffffff,0x03ffffff,0x07ffffff,0x0fffffff,0x1fffffff, |
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34 | 0x3fffffff,0x7fffffff,0xffffffff }; |
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35 | |
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36 | static const unsigned int mask8B[]= |
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37 | {0x00,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff}; |
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38 | |
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39 | void oggpack_writeinit(oggpack_buffer *b){ |
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40 | memset(b,0,sizeof(*b)); |
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41 | b->ptr=b->buffer=_ogg_malloc(BUFFER_INCREMENT); |
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42 | b->buffer[0]='\0'; |
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43 | b->storage=BUFFER_INCREMENT; |
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44 | } |
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45 | |
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46 | void oggpackB_writeinit(oggpack_buffer *b){ |
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47 | oggpack_writeinit(b); |
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48 | } |
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49 | |
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50 | void oggpack_writetrunc(oggpack_buffer *b,long bits){ |
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51 | long bytes=bits>>3; |
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52 | bits-=bytes*8; |
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53 | b->ptr=b->buffer+bytes; |
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54 | b->endbit=bits; |
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55 | b->endbyte=bytes; |
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56 | *b->ptr&=mask[bits]; |
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57 | } |
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58 | |
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59 | void oggpackB_writetrunc(oggpack_buffer *b,long bits){ |
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60 | long bytes=bits>>3; |
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61 | bits-=bytes*8; |
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62 | b->ptr=b->buffer+bytes; |
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63 | b->endbit=bits; |
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64 | b->endbyte=bytes; |
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65 | *b->ptr&=mask8B[bits]; |
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66 | } |
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67 | |
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68 | /* Takes only up to 32 bits. */ |
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69 | void oggpack_write(oggpack_buffer *b,unsigned long value,int bits){ |
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70 | if(b->endbyte+4>=b->storage){ |
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71 | b->buffer=_ogg_realloc(b->buffer,b->storage+BUFFER_INCREMENT); |
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72 | b->storage+=BUFFER_INCREMENT; |
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73 | b->ptr=b->buffer+b->endbyte; |
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74 | } |
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75 | |
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76 | value&=mask[bits]; |
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77 | bits+=b->endbit; |
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78 | |
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79 | b->ptr[0]|=value<<b->endbit; |
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80 | |
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81 | if(bits>=8){ |
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82 | b->ptr[1]=(unsigned char)(value>>(8-b->endbit)); |
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83 | if(bits>=16){ |
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84 | b->ptr[2]=(unsigned char)(value>>(16-b->endbit)); |
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85 | if(bits>=24){ |
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86 | b->ptr[3]=(unsigned char)(value>>(24-b->endbit)); |
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87 | if(bits>=32){ |
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88 | if(b->endbit) |
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89 | b->ptr[4]=(unsigned char)(value>>(32-b->endbit)); |
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90 | else |
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91 | b->ptr[4]=0; |
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92 | } |
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93 | } |
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94 | } |
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95 | } |
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96 | |
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97 | b->endbyte+=bits/8; |
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98 | b->ptr+=bits/8; |
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99 | b->endbit=bits&7; |
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100 | } |
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101 | |
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102 | /* Takes only up to 32 bits. */ |
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103 | void oggpackB_write(oggpack_buffer *b,unsigned long value,int bits){ |
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104 | if(b->endbyte+4>=b->storage){ |
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105 | b->buffer=_ogg_realloc(b->buffer,b->storage+BUFFER_INCREMENT); |
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106 | b->storage+=BUFFER_INCREMENT; |
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107 | b->ptr=b->buffer+b->endbyte; |
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108 | } |
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109 | |
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110 | value=(value&mask[bits])<<(32-bits); |
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111 | bits+=b->endbit; |
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112 | |
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113 | b->ptr[0]|=value>>(24+b->endbit); |
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114 | |
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115 | if(bits>=8){ |
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116 | b->ptr[1]=(unsigned char)(value>>(16+b->endbit)); |
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117 | if(bits>=16){ |
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118 | b->ptr[2]=(unsigned char)(value>>(8+b->endbit)); |
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119 | if(bits>=24){ |
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120 | b->ptr[3]=(unsigned char)(value>>(b->endbit)); |
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121 | if(bits>=32){ |
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122 | if(b->endbit) |
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123 | b->ptr[4]=(unsigned char)(value<<(8-b->endbit)); |
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124 | else |
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125 | b->ptr[4]=0; |
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126 | } |
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127 | } |
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128 | } |
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129 | } |
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130 | |
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131 | b->endbyte+=bits/8; |
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132 | b->ptr+=bits/8; |
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133 | b->endbit=bits&7; |
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134 | } |
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135 | |
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136 | void oggpack_writealign(oggpack_buffer *b){ |
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137 | int bits=8-b->endbit; |
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138 | if(bits<8) |
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139 | oggpack_write(b,0,bits); |
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140 | } |
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141 | |
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142 | void oggpackB_writealign(oggpack_buffer *b){ |
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143 | int bits=8-b->endbit; |
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144 | if(bits<8) |
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145 | oggpackB_write(b,0,bits); |
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146 | } |
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147 | |
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148 | static void oggpack_writecopy_helper(oggpack_buffer *b, |
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149 | void *source, |
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150 | long bits, |
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151 | void (*w)(oggpack_buffer *, |
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152 | unsigned long, |
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153 | int), |
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154 | int msb){ |
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155 | unsigned char *ptr=(unsigned char *)source; |
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156 | |
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157 | long bytes=bits/8; |
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158 | bits-=bytes*8; |
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159 | |
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160 | if(b->endbit){ |
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161 | int i; |
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162 | /* unaligned copy. Do it the hard way. */ |
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163 | for(i=0;i<bytes;i++) |
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164 | w(b,(unsigned long)(ptr[i]),8); |
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165 | }else{ |
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166 | /* aligned block copy */ |
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167 | if(b->endbyte+bytes+1>=b->storage){ |
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168 | b->storage=b->endbyte+bytes+BUFFER_INCREMENT; |
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169 | b->buffer=_ogg_realloc(b->buffer,b->storage); |
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170 | b->ptr=b->buffer+b->endbyte; |
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171 | } |
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172 | |
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173 | memmove(b->ptr,source,bytes); |
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174 | b->ptr+=bytes; |
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175 | b->endbyte+=bytes; |
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176 | *b->ptr=0; |
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177 | |
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178 | } |
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179 | if(bits){ |
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180 | if(msb) |
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181 | w(b,(unsigned long)(ptr[bytes]>>(8-bits)),bits); |
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182 | else |
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183 | w(b,(unsigned long)(ptr[bytes]),bits); |
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184 | } |
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185 | } |
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186 | |
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187 | void oggpack_writecopy(oggpack_buffer *b,void *source,long bits){ |
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188 | oggpack_writecopy_helper(b,source,bits,oggpack_write,0); |
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189 | } |
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190 | |
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191 | void oggpackB_writecopy(oggpack_buffer *b,void *source,long bits){ |
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192 | oggpack_writecopy_helper(b,source,bits,oggpackB_write,1); |
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193 | } |
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194 | |
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195 | void oggpack_reset(oggpack_buffer *b){ |
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196 | b->ptr=b->buffer; |
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197 | b->buffer[0]=0; |
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198 | b->endbit=b->endbyte=0; |
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199 | } |
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200 | |
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201 | void oggpackB_reset(oggpack_buffer *b){ |
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202 | oggpack_reset(b); |
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203 | } |
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204 | |
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205 | void oggpack_writeclear(oggpack_buffer *b){ |
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206 | _ogg_free(b->buffer); |
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207 | memset(b,0,sizeof(*b)); |
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208 | } |
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209 | |
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210 | void oggpackB_writeclear(oggpack_buffer *b){ |
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211 | oggpack_writeclear(b); |
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212 | } |
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213 | |
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214 | void oggpack_readinit(oggpack_buffer *b,unsigned char *buf,int bytes){ |
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215 | memset(b,0,sizeof(*b)); |
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216 | b->buffer=b->ptr=buf; |
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217 | b->storage=bytes; |
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218 | } |
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219 | |
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220 | void oggpackB_readinit(oggpack_buffer *b,unsigned char *buf,int bytes){ |
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221 | oggpack_readinit(b,buf,bytes); |
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222 | } |
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223 | |
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224 | /* Read in bits without advancing the bitptr; bits <= 32 */ |
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225 | long oggpack_look(oggpack_buffer *b,int bits){ |
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226 | unsigned long ret; |
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227 | unsigned long m=mask[bits]; |
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228 | |
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229 | bits+=b->endbit; |
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230 | |
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231 | if(b->endbyte+4>=b->storage){ |
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232 | /* not the main path */ |
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233 | if(b->endbyte*8+bits>b->storage*8)return(-1); |
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234 | } |
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235 | |
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236 | ret=b->ptr[0]>>b->endbit; |
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237 | if(bits>8){ |
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238 | ret|=b->ptr[1]<<(8-b->endbit); |
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239 | if(bits>16){ |
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240 | ret|=b->ptr[2]<<(16-b->endbit); |
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241 | if(bits>24){ |
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242 | ret|=b->ptr[3]<<(24-b->endbit); |
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243 | if(bits>32 && b->endbit) |
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244 | ret|=b->ptr[4]<<(32-b->endbit); |
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245 | } |
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246 | } |
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247 | } |
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248 | return(m&ret); |
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249 | } |
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250 | |
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251 | /* Read in bits without advancing the bitptr; bits <= 32 */ |
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252 | long oggpackB_look(oggpack_buffer *b,int bits){ |
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253 | unsigned long ret; |
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254 | int m=32-bits; |
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255 | |
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256 | bits+=b->endbit; |
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257 | |
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258 | if(b->endbyte+4>=b->storage){ |
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259 | /* not the main path */ |
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260 | if(b->endbyte*8+bits>b->storage*8)return(-1); |
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261 | } |
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262 | |
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263 | ret=b->ptr[0]<<(24+b->endbit); |
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264 | if(bits>8){ |
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265 | ret|=b->ptr[1]<<(16+b->endbit); |
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266 | if(bits>16){ |
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267 | ret|=b->ptr[2]<<(8+b->endbit); |
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268 | if(bits>24){ |
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269 | ret|=b->ptr[3]<<(b->endbit); |
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270 | if(bits>32 && b->endbit) |
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271 | ret|=b->ptr[4]>>(8-b->endbit); |
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272 | } |
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273 | } |
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274 | } |
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275 | return ((ret&0xffffffff)>>(m>>1))>>((m+1)>>1); |
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276 | } |
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277 | |
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278 | long oggpack_look1(oggpack_buffer *b){ |
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279 | if(b->endbyte>=b->storage)return(-1); |
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280 | return((b->ptr[0]>>b->endbit)&1); |
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281 | } |
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282 | |
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283 | long oggpackB_look1(oggpack_buffer *b){ |
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284 | if(b->endbyte>=b->storage)return(-1); |
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285 | return((b->ptr[0]>>(7-b->endbit))&1); |
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286 | } |
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287 | |
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288 | void oggpack_adv(oggpack_buffer *b,int bits){ |
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289 | bits+=b->endbit; |
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290 | b->ptr+=bits/8; |
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291 | b->endbyte+=bits/8; |
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292 | b->endbit=bits&7; |
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293 | } |
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294 | |
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295 | void oggpackB_adv(oggpack_buffer *b,int bits){ |
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296 | oggpack_adv(b,bits); |
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297 | } |
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298 | |
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299 | void oggpack_adv1(oggpack_buffer *b){ |
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300 | if(++(b->endbit)>7){ |
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301 | b->endbit=0; |
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302 | b->ptr++; |
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303 | b->endbyte++; |
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304 | } |
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305 | } |
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306 | |
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307 | void oggpackB_adv1(oggpack_buffer *b){ |
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308 | oggpack_adv1(b); |
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309 | } |
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310 | |
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311 | /* bits <= 32 */ |
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312 | long oggpack_read(oggpack_buffer *b,int bits){ |
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313 | long ret; |
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314 | unsigned long m=mask[bits]; |
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315 | |
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316 | bits+=b->endbit; |
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317 | |
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318 | if(b->endbyte+4>=b->storage){ |
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319 | /* not the main path */ |
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320 | ret=-1L; |
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321 | if(b->endbyte*8+bits>b->storage*8)goto overflow; |
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322 | } |
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323 | |
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324 | ret=b->ptr[0]>>b->endbit; |
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325 | if(bits>8){ |
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326 | ret|=b->ptr[1]<<(8-b->endbit); |
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327 | if(bits>16){ |
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328 | ret|=b->ptr[2]<<(16-b->endbit); |
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329 | if(bits>24){ |
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330 | ret|=b->ptr[3]<<(24-b->endbit); |
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331 | if(bits>32 && b->endbit){ |
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332 | ret|=b->ptr[4]<<(32-b->endbit); |
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333 | } |
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334 | } |
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335 | } |
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336 | } |
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337 | ret&=m; |
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338 | |
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339 | overflow: |
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340 | |
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341 | b->ptr+=bits/8; |
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342 | b->endbyte+=bits/8; |
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343 | b->endbit=bits&7; |
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344 | return(ret); |
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345 | } |
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346 | |
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347 | /* bits <= 32 */ |
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348 | long oggpackB_read(oggpack_buffer *b,int bits){ |
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349 | long ret; |
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350 | long m=32-bits; |
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351 | |
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352 | bits+=b->endbit; |
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353 | |
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354 | if(b->endbyte+4>=b->storage){ |
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355 | /* not the main path */ |
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356 | ret=-1L; |
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357 | if(b->endbyte*8+bits>b->storage*8)goto overflow; |
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358 | } |
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359 | |
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360 | ret=b->ptr[0]<<(24+b->endbit); |
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361 | if(bits>8){ |
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362 | ret|=b->ptr[1]<<(16+b->endbit); |
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363 | if(bits>16){ |
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364 | ret|=b->ptr[2]<<(8+b->endbit); |
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365 | if(bits>24){ |
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366 | ret|=b->ptr[3]<<(b->endbit); |
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367 | if(bits>32 && b->endbit) |
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368 | ret|=b->ptr[4]>>(8-b->endbit); |
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369 | } |
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370 | } |
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371 | } |
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372 | ret=((ret&0xffffffffUL)>>(m>>1))>>((m+1)>>1); |
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373 | |
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374 | overflow: |
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375 | |
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376 | b->ptr+=bits/8; |
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377 | b->endbyte+=bits/8; |
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378 | b->endbit=bits&7; |
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379 | return(ret); |
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380 | } |
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381 | |
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382 | long oggpack_read1(oggpack_buffer *b){ |
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383 | long ret; |
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384 | |
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385 | if(b->endbyte>=b->storage){ |
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386 | /* not the main path */ |
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387 | ret=-1L; |
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388 | goto overflow; |
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389 | } |
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390 | |
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391 | ret=(b->ptr[0]>>b->endbit)&1; |
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392 | |
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393 | overflow: |
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394 | |
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395 | b->endbit++; |
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396 | if(b->endbit>7){ |
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397 | b->endbit=0; |
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398 | b->ptr++; |
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399 | b->endbyte++; |
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400 | } |
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401 | return(ret); |
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402 | } |
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403 | |
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404 | long oggpackB_read1(oggpack_buffer *b){ |
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405 | long ret; |
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406 | |
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407 | if(b->endbyte>=b->storage){ |
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408 | /* not the main path */ |
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409 | ret=-1L; |
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410 | goto overflow; |
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411 | } |
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412 | |
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413 | ret=(b->ptr[0]>>(7-b->endbit))&1; |
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414 | |
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415 | overflow: |
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416 | |
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417 | b->endbit++; |
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418 | if(b->endbit>7){ |
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419 | b->endbit=0; |
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420 | b->ptr++; |
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421 | b->endbyte++; |
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422 | } |
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423 | return(ret); |
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424 | } |
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425 | |
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426 | long oggpack_bytes(oggpack_buffer *b){ |
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427 | return(b->endbyte+(b->endbit+7)/8); |
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428 | } |
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429 | |
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430 | long oggpack_bits(oggpack_buffer *b){ |
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431 | return(b->endbyte*8+b->endbit); |
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432 | } |
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433 | |
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434 | long oggpackB_bytes(oggpack_buffer *b){ |
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435 | return oggpack_bytes(b); |
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436 | } |
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437 | |
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438 | long oggpackB_bits(oggpack_buffer *b){ |
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439 | return oggpack_bits(b); |
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440 | } |
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441 | |
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442 | unsigned char *oggpack_get_buffer(oggpack_buffer *b){ |
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443 | return(b->buffer); |
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444 | } |
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445 | |
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446 | unsigned char *oggpackB_get_buffer(oggpack_buffer *b){ |
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447 | return oggpack_get_buffer(b); |
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448 | } |
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449 | |
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450 | /* Self test of the bitwise routines; everything else is based on |
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451 | them, so they damned well better be solid. */ |
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452 | |
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453 | #ifdef _V_SELFTEST |
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454 | #include <stdio.h> |
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455 | |
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456 | static int ilog(unsigned int v){ |
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457 | int ret=0; |
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458 | while(v){ |
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459 | ret++; |
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460 | v>>=1; |
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461 | } |
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462 | return(ret); |
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463 | } |
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464 | |
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465 | oggpack_buffer o; |
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466 | oggpack_buffer r; |
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467 | |
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468 | void report(char *in){ |
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469 | fprintf(stderr,"%s",in); |
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470 | exit(1); |
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471 | } |
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472 | |
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473 | void cliptest(unsigned long *b,int vals,int bits,int *comp,int compsize){ |
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474 | long bytes,i; |
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475 | unsigned char *buffer; |
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476 | |
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477 | oggpack_reset(&o); |
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478 | for(i=0;i<vals;i++) |
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479 | oggpack_write(&o,b[i],bits?bits:ilog(b[i])); |
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480 | buffer=oggpack_get_buffer(&o); |
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481 | bytes=oggpack_bytes(&o); |
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482 | if(bytes!=compsize)report("wrong number of bytes!\n"); |
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483 | for(i=0;i<bytes;i++)if(buffer[i]!=comp[i]){ |
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484 | for(i=0;i<bytes;i++)fprintf(stderr,"%x %x\n",(int)buffer[i],(int)comp[i]); |
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485 | report("wrote incorrect value!\n"); |
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486 | } |
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487 | oggpack_readinit(&r,buffer,bytes); |
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488 | for(i=0;i<vals;i++){ |
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489 | int tbit=bits?bits:ilog(b[i]); |
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490 | if(oggpack_look(&r,tbit)==-1) |
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491 | report("out of data!\n"); |
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492 | if(oggpack_look(&r,tbit)!=(b[i]&mask[tbit])) |
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493 | report("looked at incorrect value!\n"); |
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494 | if(tbit==1) |
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495 | if(oggpack_look1(&r)!=(b[i]&mask[tbit])) |
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496 | report("looked at single bit incorrect value!\n"); |
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497 | if(tbit==1){ |
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498 | if(oggpack_read1(&r)!=(b[i]&mask[tbit])) |
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499 | report("read incorrect single bit value!\n"); |
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500 | }else{ |
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501 | if(oggpack_read(&r,tbit)!=(b[i]&mask[tbit])) |
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502 | report("read incorrect value!\n"); |
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503 | } |
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504 | } |
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505 | if(oggpack_bytes(&r)!=bytes)report("leftover bytes after read!\n"); |
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506 | } |
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507 | |
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508 | void cliptestB(unsigned long *b,int vals,int bits,int *comp,int compsize){ |
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509 | long bytes,i; |
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510 | unsigned char *buffer; |
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511 | |
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512 | oggpackB_reset(&o); |
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513 | for(i=0;i<vals;i++) |
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514 | oggpackB_write(&o,b[i],bits?bits:ilog(b[i])); |
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515 | buffer=oggpackB_get_buffer(&o); |
---|
516 | bytes=oggpackB_bytes(&o); |
---|
517 | if(bytes!=compsize)report("wrong number of bytes!\n"); |
---|
518 | for(i=0;i<bytes;i++)if(buffer[i]!=comp[i]){ |
---|
519 | for(i=0;i<bytes;i++)fprintf(stderr,"%x %x\n",(int)buffer[i],(int)comp[i]); |
---|
520 | report("wrote incorrect value!\n"); |
---|
521 | } |
---|
522 | oggpackB_readinit(&r,buffer,bytes); |
---|
523 | for(i=0;i<vals;i++){ |
---|
524 | int tbit=bits?bits:ilog(b[i]); |
---|
525 | if(oggpackB_look(&r,tbit)==-1) |
---|
526 | report("out of data!\n"); |
---|
527 | if(oggpackB_look(&r,tbit)!=(b[i]&mask[tbit])) |
---|
528 | report("looked at incorrect value!\n"); |
---|
529 | if(tbit==1) |
---|
530 | if(oggpackB_look1(&r)!=(b[i]&mask[tbit])) |
---|
531 | report("looked at single bit incorrect value!\n"); |
---|
532 | if(tbit==1){ |
---|
533 | if(oggpackB_read1(&r)!=(b[i]&mask[tbit])) |
---|
534 | report("read incorrect single bit value!\n"); |
---|
535 | }else{ |
---|
536 | if(oggpackB_read(&r,tbit)!=(b[i]&mask[tbit])) |
---|
537 | report("read incorrect value!\n"); |
---|
538 | } |
---|
539 | } |
---|
540 | if(oggpackB_bytes(&r)!=bytes)report("leftover bytes after read!\n"); |
---|
541 | } |
---|
542 | |
---|
543 | int main(void){ |
---|
544 | unsigned char *buffer; |
---|
545 | long bytes,i; |
---|
546 | static unsigned long testbuffer1[]= |
---|
547 | {18,12,103948,4325,543,76,432,52,3,65,4,56,32,42,34,21,1,23,32,546,456,7, |
---|
548 | 567,56,8,8,55,3,52,342,341,4,265,7,67,86,2199,21,7,1,5,1,4}; |
---|
549 | int test1size=43; |
---|
550 | |
---|
551 | static unsigned long testbuffer2[]= |
---|
552 | {216531625L,1237861823,56732452,131,3212421,12325343,34547562,12313212, |
---|
553 | 1233432,534,5,346435231,14436467,7869299,76326614,167548585, |
---|
554 | 85525151,0,12321,1,349528352}; |
---|
555 | int test2size=21; |
---|
556 | |
---|
557 | static unsigned long testbuffer3[]= |
---|
558 | {1,0,14,0,1,0,12,0,1,0,0,0,1,1,0,1,0,1,0,1,0,1,0,1,0,1,0,0,1,1,1,1,1,0,0,1, |
---|
559 | 0,1,30,1,1,1,0,0,1,0,0,0,12,0,11,0,1,0,0,1}; |
---|
560 | int test3size=56; |
---|
561 | |
---|
562 | static unsigned long large[]= |
---|
563 | {2136531625L,2137861823,56732452,131,3212421,12325343,34547562,12313212, |
---|
564 | 1233432,534,5,2146435231,14436467,7869299,76326614,167548585, |
---|
565 | 85525151,0,12321,1,2146528352}; |
---|
566 | |
---|
567 | int onesize=33; |
---|
568 | static int one[33]={146,25,44,151,195,15,153,176,233,131,196,65,85,172,47,40, |
---|
569 | 34,242,223,136,35,222,211,86,171,50,225,135,214,75,172, |
---|
570 | 223,4}; |
---|
571 | static int oneB[33]={150,101,131,33,203,15,204,216,105,193,156,65,84,85,222, |
---|
572 | 8,139,145,227,126,34,55,244,171,85,100,39,195,173,18, |
---|
573 | 245,251,128}; |
---|
574 | |
---|
575 | int twosize=6; |
---|
576 | static int two[6]={61,255,255,251,231,29}; |
---|
577 | static int twoB[6]={247,63,255,253,249,120}; |
---|
578 | |
---|
579 | int threesize=54; |
---|
580 | static int three[54]={169,2,232,252,91,132,156,36,89,13,123,176,144,32,254, |
---|
581 | 142,224,85,59,121,144,79,124,23,67,90,90,216,79,23,83, |
---|
582 | 58,135,196,61,55,129,183,54,101,100,170,37,127,126,10, |
---|
583 | 100,52,4,14,18,86,77,1}; |
---|
584 | static int threeB[54]={206,128,42,153,57,8,183,251,13,89,36,30,32,144,183, |
---|
585 | 130,59,240,121,59,85,223,19,228,180,134,33,107,74,98, |
---|
586 | 233,253,196,135,63,2,110,114,50,155,90,127,37,170,104, |
---|
587 | 200,20,254,4,58,106,176,144,0}; |
---|
588 | |
---|
589 | int foursize=38; |
---|
590 | static int four[38]={18,6,163,252,97,194,104,131,32,1,7,82,137,42,129,11,72, |
---|
591 | 132,60,220,112,8,196,109,64,179,86,9,137,195,208,122,169, |
---|
592 | 28,2,133,0,1}; |
---|
593 | static int fourB[38]={36,48,102,83,243,24,52,7,4,35,132,10,145,21,2,93,2,41, |
---|
594 | 1,219,184,16,33,184,54,149,170,132,18,30,29,98,229,67, |
---|
595 | 129,10,4,32}; |
---|
596 | |
---|
597 | int fivesize=45; |
---|
598 | static int five[45]={169,2,126,139,144,172,30,4,80,72,240,59,130,218,73,62, |
---|
599 | 241,24,210,44,4,20,0,248,116,49,135,100,110,130,181,169, |
---|
600 | 84,75,159,2,1,0,132,192,8,0,0,18,22}; |
---|
601 | static int fiveB[45]={1,84,145,111,245,100,128,8,56,36,40,71,126,78,213,226, |
---|
602 | 124,105,12,0,133,128,0,162,233,242,67,152,77,205,77, |
---|
603 | 172,150,169,129,79,128,0,6,4,32,0,27,9,0}; |
---|
604 | |
---|
605 | int sixsize=7; |
---|
606 | static int six[7]={17,177,170,242,169,19,148}; |
---|
607 | static int sixB[7]={136,141,85,79,149,200,41}; |
---|
608 | |
---|
609 | /* Test read/write together */ |
---|
610 | /* Later we test against pregenerated bitstreams */ |
---|
611 | oggpack_writeinit(&o); |
---|
612 | |
---|
613 | fprintf(stderr,"\nSmall preclipped packing (LSb): "); |
---|
614 | cliptest(testbuffer1,test1size,0,one,onesize); |
---|
615 | fprintf(stderr,"ok."); |
---|
616 | |
---|
617 | fprintf(stderr,"\nNull bit call (LSb): "); |
---|
618 | cliptest(testbuffer3,test3size,0,two,twosize); |
---|
619 | fprintf(stderr,"ok."); |
---|
620 | |
---|
621 | fprintf(stderr,"\nLarge preclipped packing (LSb): "); |
---|
622 | cliptest(testbuffer2,test2size,0,three,threesize); |
---|
623 | fprintf(stderr,"ok."); |
---|
624 | |
---|
625 | fprintf(stderr,"\n32 bit preclipped packing (LSb): "); |
---|
626 | oggpack_reset(&o); |
---|
627 | for(i=0;i<test2size;i++) |
---|
628 | oggpack_write(&o,large[i],32); |
---|
629 | buffer=oggpack_get_buffer(&o); |
---|
630 | bytes=oggpack_bytes(&o); |
---|
631 | oggpack_readinit(&r,buffer,bytes); |
---|
632 | for(i=0;i<test2size;i++){ |
---|
633 | if(oggpack_look(&r,32)==-1)report("out of data. failed!"); |
---|
634 | if(oggpack_look(&r,32)!=large[i]){ |
---|
635 | fprintf(stderr,"%ld != %ld (%lx!=%lx):",oggpack_look(&r,32),large[i], |
---|
636 | oggpack_look(&r,32),large[i]); |
---|
637 | report("read incorrect value!\n"); |
---|
638 | } |
---|
639 | oggpack_adv(&r,32); |
---|
640 | } |
---|
641 | if(oggpack_bytes(&r)!=bytes)report("leftover bytes after read!\n"); |
---|
642 | fprintf(stderr,"ok."); |
---|
643 | |
---|
644 | fprintf(stderr,"\nSmall unclipped packing (LSb): "); |
---|
645 | cliptest(testbuffer1,test1size,7,four,foursize); |
---|
646 | fprintf(stderr,"ok."); |
---|
647 | |
---|
648 | fprintf(stderr,"\nLarge unclipped packing (LSb): "); |
---|
649 | cliptest(testbuffer2,test2size,17,five,fivesize); |
---|
650 | fprintf(stderr,"ok."); |
---|
651 | |
---|
652 | fprintf(stderr,"\nSingle bit unclipped packing (LSb): "); |
---|
653 | cliptest(testbuffer3,test3size,1,six,sixsize); |
---|
654 | fprintf(stderr,"ok."); |
---|
655 | |
---|
656 | fprintf(stderr,"\nTesting read past end (LSb): "); |
---|
657 | oggpack_readinit(&r,"\0\0\0\0\0\0\0\0",8); |
---|
658 | for(i=0;i<64;i++){ |
---|
659 | if(oggpack_read(&r,1)!=0){ |
---|
660 | fprintf(stderr,"failed; got -1 prematurely.\n"); |
---|
661 | exit(1); |
---|
662 | } |
---|
663 | } |
---|
664 | if(oggpack_look(&r,1)!=-1 || |
---|
665 | oggpack_read(&r,1)!=-1){ |
---|
666 | fprintf(stderr,"failed; read past end without -1.\n"); |
---|
667 | exit(1); |
---|
668 | } |
---|
669 | oggpack_readinit(&r,"\0\0\0\0\0\0\0\0",8); |
---|
670 | if(oggpack_read(&r,30)!=0 || oggpack_read(&r,16)!=0){ |
---|
671 | fprintf(stderr,"failed 2; got -1 prematurely.\n"); |
---|
672 | exit(1); |
---|
673 | } |
---|
674 | |
---|
675 | if(oggpack_look(&r,18)!=0 || |
---|
676 | oggpack_look(&r,18)!=0){ |
---|
677 | fprintf(stderr,"failed 3; got -1 prematurely.\n"); |
---|
678 | exit(1); |
---|
679 | } |
---|
680 | if(oggpack_look(&r,19)!=-1 || |
---|
681 | oggpack_look(&r,19)!=-1){ |
---|
682 | fprintf(stderr,"failed; read past end without -1.\n"); |
---|
683 | exit(1); |
---|
684 | } |
---|
685 | if(oggpack_look(&r,32)!=-1 || |
---|
686 | oggpack_look(&r,32)!=-1){ |
---|
687 | fprintf(stderr,"failed; read past end without -1.\n"); |
---|
688 | exit(1); |
---|
689 | } |
---|
690 | oggpack_writeclear(&o); |
---|
691 | fprintf(stderr,"ok.\n"); |
---|
692 | |
---|
693 | /********** lazy, cut-n-paste retest with MSb packing ***********/ |
---|
694 | |
---|
695 | /* Test read/write together */ |
---|
696 | /* Later we test against pregenerated bitstreams */ |
---|
697 | oggpackB_writeinit(&o); |
---|
698 | |
---|
699 | fprintf(stderr,"\nSmall preclipped packing (MSb): "); |
---|
700 | cliptestB(testbuffer1,test1size,0,oneB,onesize); |
---|
701 | fprintf(stderr,"ok."); |
---|
702 | |
---|
703 | fprintf(stderr,"\nNull bit call (MSb): "); |
---|
704 | cliptestB(testbuffer3,test3size,0,twoB,twosize); |
---|
705 | fprintf(stderr,"ok."); |
---|
706 | |
---|
707 | fprintf(stderr,"\nLarge preclipped packing (MSb): "); |
---|
708 | cliptestB(testbuffer2,test2size,0,threeB,threesize); |
---|
709 | fprintf(stderr,"ok."); |
---|
710 | |
---|
711 | fprintf(stderr,"\n32 bit preclipped packing (MSb): "); |
---|
712 | oggpackB_reset(&o); |
---|
713 | for(i=0;i<test2size;i++) |
---|
714 | oggpackB_write(&o,large[i],32); |
---|
715 | buffer=oggpackB_get_buffer(&o); |
---|
716 | bytes=oggpackB_bytes(&o); |
---|
717 | oggpackB_readinit(&r,buffer,bytes); |
---|
718 | for(i=0;i<test2size;i++){ |
---|
719 | if(oggpackB_look(&r,32)==-1)report("out of data. failed!"); |
---|
720 | if(oggpackB_look(&r,32)!=large[i]){ |
---|
721 | fprintf(stderr,"%ld != %ld (%lx!=%lx):",oggpackB_look(&r,32),large[i], |
---|
722 | oggpackB_look(&r,32),large[i]); |
---|
723 | report("read incorrect value!\n"); |
---|
724 | } |
---|
725 | oggpackB_adv(&r,32); |
---|
726 | } |
---|
727 | if(oggpackB_bytes(&r)!=bytes)report("leftover bytes after read!\n"); |
---|
728 | fprintf(stderr,"ok."); |
---|
729 | |
---|
730 | fprintf(stderr,"\nSmall unclipped packing (MSb): "); |
---|
731 | cliptestB(testbuffer1,test1size,7,fourB,foursize); |
---|
732 | fprintf(stderr,"ok."); |
---|
733 | |
---|
734 | fprintf(stderr,"\nLarge unclipped packing (MSb): "); |
---|
735 | cliptestB(testbuffer2,test2size,17,fiveB,fivesize); |
---|
736 | fprintf(stderr,"ok."); |
---|
737 | |
---|
738 | fprintf(stderr,"\nSingle bit unclipped packing (MSb): "); |
---|
739 | cliptestB(testbuffer3,test3size,1,sixB,sixsize); |
---|
740 | fprintf(stderr,"ok."); |
---|
741 | |
---|
742 | fprintf(stderr,"\nTesting read past end (MSb): "); |
---|
743 | oggpackB_readinit(&r,"\0\0\0\0\0\0\0\0",8); |
---|
744 | for(i=0;i<64;i++){ |
---|
745 | if(oggpackB_read(&r,1)!=0){ |
---|
746 | fprintf(stderr,"failed; got -1 prematurely.\n"); |
---|
747 | exit(1); |
---|
748 | } |
---|
749 | } |
---|
750 | if(oggpackB_look(&r,1)!=-1 || |
---|
751 | oggpackB_read(&r,1)!=-1){ |
---|
752 | fprintf(stderr,"failed; read past end without -1.\n"); |
---|
753 | exit(1); |
---|
754 | } |
---|
755 | oggpackB_readinit(&r,"\0\0\0\0\0\0\0\0",8); |
---|
756 | if(oggpackB_read(&r,30)!=0 || oggpackB_read(&r,16)!=0){ |
---|
757 | fprintf(stderr,"failed 2; got -1 prematurely.\n"); |
---|
758 | exit(1); |
---|
759 | } |
---|
760 | |
---|
761 | if(oggpackB_look(&r,18)!=0 || |
---|
762 | oggpackB_look(&r,18)!=0){ |
---|
763 | fprintf(stderr,"failed 3; got -1 prematurely.\n"); |
---|
764 | exit(1); |
---|
765 | } |
---|
766 | if(oggpackB_look(&r,19)!=-1 || |
---|
767 | oggpackB_look(&r,19)!=-1){ |
---|
768 | fprintf(stderr,"failed; read past end without -1.\n"); |
---|
769 | exit(1); |
---|
770 | } |
---|
771 | if(oggpackB_look(&r,32)!=-1 || |
---|
772 | oggpackB_look(&r,32)!=-1){ |
---|
773 | fprintf(stderr,"failed; read past end without -1.\n"); |
---|
774 | exit(1); |
---|
775 | } |
---|
776 | oggpackB_writeclear(&o); |
---|
777 | fprintf(stderr,"ok.\n\n"); |
---|
778 | |
---|
779 | |
---|
780 | return(0); |
---|
781 | } |
---|
782 | #endif /* _V_SELFTEST */ |
---|
783 | |
---|
784 | #undef BUFFER_INCREMENT |
---|