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<h1>encoding.h</h1><a href="a00082.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment">00001 <span class="comment">/*</span>
00002 <span class="comment">Copyright(c) 2002-2005 Anatoliy Kuznetsov(anatoliy_kuznetsov at yahoo.com)</span>
00003 <span class="comment"></span>
00004 <span class="comment"></span>
00005 <span class="comment">Permission is hereby granted, free of charge, to any person </span>
00006 <span class="comment">obtaining a copy of this software and associated documentation </span>
00007 <span class="comment">files (the "Software"), to deal in the Software without restriction, </span>
00008 <span class="comment">including without limitation the rights to use, copy, modify, merge, </span>
00009 <span class="comment">publish, distribute, sublicense, and/or sell copies of the Software, </span>
00010 <span class="comment">and to permit persons to whom the Software is furnished to do so, </span>
00011 <span class="comment">subject to the following conditions:</span>
00012 <span class="comment"></span>
00013 <span class="comment">The above copyright notice and this permission notice shall be included </span>
00014 <span class="comment">in all copies or substantial portions of the Software.</span>
00015 <span class="comment"></span>
00016 <span class="comment">THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, </span>
00017 <span class="comment">EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES </span>
00018 <span class="comment">OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. </span>
00019 <span class="comment">IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, </span>
00020 <span class="comment">DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, </span>
00021 <span class="comment">ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR </span>
00022 <span class="comment">OTHER DEALINGS IN THE SOFTWARE.</span>
00023 <span class="comment"></span>
00024 <span class="comment"></span>
00025 <span class="comment">For more information please visit: http://bmagic.sourceforge.net</span>
00026 <span class="comment"></span>
00027 <span class="comment">*/</span>
00028
00029 <span class="preprocessor">#ifndef ENCODING_H__INCLUDED__</span>
00030 <span class="preprocessor"></span><span class="preprocessor">#define ENCODING_H__INCLUDED__</span>
00031 <span class="preprocessor"></span>
00032 <span class="preprocessor">#include <memory.h></span>
00033
00034 <span class="keyword">namespace </span>bm
00035 {
00036
00037 <span class="comment">// ----------------------------------------------------------------</span><span class="comment"></span>
00038 <span class="comment">/*!</span>
00039 <span class="comment"> \brief Memory encoding.</span>
00040 <span class="comment"> </span>
00041 <span class="comment"> Class for encoding data into memory. </span>
00042 <span class="comment"> Properly handles aligment issues with integer data types.</span>
00043 <span class="comment">*/</span>
<a name="l00044"></a><a class="code" href="a00066.html">00044</a> <span class="keyword">class </span><a class="code" href="a00066.html">encoder</a>
00045 {
00046 <span class="keyword">public</span>:
00047 <a class="code" href="a00066.html#a0">encoder</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buf, <span class="keywordtype">unsigned</span> <a class="code" href="a00066.html#a6">size</a>);
00048 <span class="keywordtype">void</span> <a class="code" href="a00066.html#a1">put_8</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> c);
00049 <span class="keywordtype">void</span> <a class="code" href="a00066.html#a2">put_16</a>(bm::short_t s);
00050 <span class="keywordtype">void</span> <a class="code" href="a00066.html#a2">put_16</a>(<span class="keyword">const</span> bm::short_t* s, <span class="keywordtype">unsigned</span> count);
00051 <span class="keywordtype">void</span> <a class="code" href="a00066.html#a4">put_32</a>(bm::word_t w);
00052 <span class="keywordtype">void</span> <a class="code" href="a00066.html#a4">put_32</a>(<span class="keyword">const</span> bm::word_t* w, <span class="keywordtype">unsigned</span> count);
00053 <span class="keywordtype">unsigned</span> <a class="code" href="a00066.html#a6">size</a>() <span class="keyword">const</span>;
00054 <span class="keyword">private</span>:
00055 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buf_;
00056 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* start_;
00057 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> size_;
00058 };
00059
00060 <span class="comment">// ----------------------------------------------------------------</span><span class="comment"></span>
00061 <span class="comment">/**</span>
00062 <span class="comment"> Base class for all decoding functionality</span>
00063 <span class="comment">*/</span>
<a name="l00064"></a><a class="code" href="a00063.html">00064</a> <span class="keyword">class </span><a class="code" href="a00063.html">decoder_base</a>
00065 {
00066 <span class="keyword">public</span>:
<a name="l00067"></a><a class="code" href="a00063.html#a0">00067</a> <a class="code" href="a00063.html#a0">decoder_base</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buf) { <a class="code" href="a00063.html#p0">buf_</a> = <a class="code" href="a00063.html#p1">start_</a> = buf; }<span class="comment"></span>
00068 <span class="comment"> /// Reads character from the decoding buffer. </span>
<a name="l00069"></a><a class="code" href="a00063.html#a1">00069</a> <span class="comment"></span> <a class="code" href="a00077.html#a12">BMFORCEINLINE</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="a00063.html#a1">get_8</a>() { <span class="keywordflow">return</span> *<a class="code" href="a00063.html#p0">buf_</a>++; }<span class="comment"></span>
00070 <span class="comment"> /// Returns size of the current decoding stream.</span>
00071 <span class="comment"></span> <a class="code" href="a00077.html#a12">BMFORCEINLINE</a>
<a name="l00072"></a><a class="code" href="a00063.html#a2">00072</a> <span class="keywordtype">unsigned</span> <a class="code" href="a00063.html#a2">size</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> (<span class="keywordtype">unsigned</span>)(<a class="code" href="a00063.html#p0">buf_</a> - <a class="code" href="a00063.html#p1">start_</a>); }
00073 <span class="keyword">protected</span>:
<a name="l00074"></a><a class="code" href="a00063.html#p0">00074</a> <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* <a class="code" href="a00063.html#p0">buf_</a>;
<a name="l00075"></a><a class="code" href="a00063.html#p1">00075</a> <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* <a class="code" href="a00063.html#p1">start_</a>;
00076 };
00077
00078
00079 <span class="comment">// ----------------------------------------------------------------</span><span class="comment"></span>
00080 <span class="comment">/**</span>
00081 <span class="comment"> Class for decoding data from memory buffer.</span>
00082 <span class="comment"> Properly handles aligment issues with integer data types.</span>
00083 <span class="comment">*/</span>
<a name="l00084"></a><a class="code" href="a00062.html">00084</a> <span class="keyword">class </span><a class="code" href="a00062.html">decoder</a> : <span class="keyword">public</span> <a class="code" href="a00063.html">decoder_base</a>
00085 {
00086 <span class="keyword">public</span>:
00087 <a class="code" href="a00062.html#a0">decoder</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buf);
00088 bm::short_t <a class="code" href="a00062.html#a1">get_16</a>();
00089 bm::word_t <a class="code" href="a00062.html#a2">get_32</a>();
00090 <span class="keywordtype">void</span> <a class="code" href="a00062.html#a2">get_32</a>(bm::word_t* w, <span class="keywordtype">unsigned</span> count);
00091 <span class="keywordtype">void</span> <a class="code" href="a00062.html#a1">get_16</a>(bm::short_t* s, <span class="keywordtype">unsigned</span> count);
00092 };
00093
00094 <span class="comment">// ----------------------------------------------------------------</span><span class="comment"></span>
00095 <span class="comment">/**</span>
00096 <span class="comment"> Class for decoding data from memory buffer.</span>
00097 <span class="comment"> Properly handles aligment issues with integer data types.</span>
00098 <span class="comment"> Converts data to big endian architecture </span>
00099 <span class="comment"> (presumed it was encoded as little endian)</span>
00100 <span class="comment">*/</span>
<a name="l00101"></a><a class="code" href="a00092.html#a7">00101</a> <span class="keyword">typedef</span> <a class="code" href="a00062.html">decoder</a> <a class="code" href="a00062.html">decoder_big_endian</a>;
00102
00103
00104 <span class="comment">// ----------------------------------------------------------------</span><span class="comment"></span>
00105 <span class="comment">/**</span>
00106 <span class="comment"> Class for decoding data from memory buffer.</span>
00107 <span class="comment"> Properly handles aligment issues with integer data types.</span>
00108 <span class="comment"> Converts data to little endian architecture </span>
00109 <span class="comment"> (presumed it was encoded as big endian)</span>
00110 <span class="comment">*/</span>
<a name="l00111"></a><a class="code" href="a00064.html">00111</a> <span class="keyword">class </span><a class="code" href="a00064.html">decoder_little_endian</a> : <span class="keyword">public</span> <a class="code" href="a00063.html">decoder_base</a>
00112 {
00113 <span class="keyword">public</span>:
00114 <a class="code" href="a00064.html#a0">decoder_little_endian</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buf);
00115 bm::short_t <a class="code" href="a00064.html#a1">get_16</a>();
00116 bm::word_t <a class="code" href="a00064.html#a2">get_32</a>();
00117 <span class="keywordtype">void</span> <a class="code" href="a00064.html#a2">get_32</a>(bm::word_t* w, <span class="keywordtype">unsigned</span> count);
00118 <span class="keywordtype">void</span> <a class="code" href="a00064.html#a1">get_16</a>(bm::short_t* s, <span class="keywordtype">unsigned</span> count);
00119 };
00120
00121
00122
00123 <span class="comment">// ----------------------------------------------------------------</span>
00124 <span class="comment">// Implementation details. </span>
00125 <span class="comment">// ----------------------------------------------------------------</span>
00126 <span class="comment"></span>
00127 <span class="comment">/*! </span>
00128 <span class="comment"> \fn encoder::encoder(unsigned char* buf, unsigned size) </span>
00129 <span class="comment"> \brief Construction.</span>
00130 <span class="comment"> \param buf - memory buffer pointer.</span>
00131 <span class="comment"> \param size - size of the buffer</span>
00132 <span class="comment">*/</span>
<a name="l00133"></a><a class="code" href="a00066.html#a0">00133</a> <span class="keyword">inline</span> encoder::encoder(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buf, <span class="keywordtype">unsigned</span> size)
00134 : buf_(buf), start_(buf), size_(size)
00135 {
00136 }
00137 <span class="comment"></span>
00138 <span class="comment">/*!</span>
00139 <span class="comment"> \fn void encoder::put_8(unsigned char c) </span>
00140 <span class="comment"> \brief Puts one character into the encoding buffer.</span>
00141 <span class="comment"> \param c - character to encode</span>
00142 <span class="comment">*/</span>
<a name="l00143"></a><a class="code" href="a00066.html#a1">00143</a> <a class="code" href="a00077.html#a12">BMFORCEINLINE</a> <span class="keywordtype">void</span> encoder::put_8(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> c)
00144 {
00145 *buf_++ = c;
00146 }
00147 <span class="comment"></span>
00148 <span class="comment">/*!</span>
00149 <span class="comment"> \fn encoder::put_16(bm::short_t s)</span>
00150 <span class="comment"> \brief Puts short word (16 bits) into the encoding buffer.</span>
00151 <span class="comment"> \param s - short word to encode</span>
00152 <span class="comment">*/</span>
<a name="l00153"></a><a class="code" href="a00066.html#a2">00153</a> <a class="code" href="a00077.html#a12">BMFORCEINLINE</a> <span class="keywordtype">void</span> encoder::put_16(bm::short_t s)
00154 {
00155 *buf_++ = (<span class="keywordtype">unsigned</span> char) s;
00156 s >>= 8;
00157 *buf_++ = (<span class="keywordtype">unsigned</span> char) s;
00158 }
00159 <span class="comment"></span>
00160 <span class="comment">/*!</span>
00161 <span class="comment"> \brief Method puts array of short words (16 bits) into the encoding buffer.</span>
00162 <span class="comment">*/</span>
<a name="l00163"></a><a class="code" href="a00066.html#a3">00163</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> encoder::put_16(<span class="keyword">const</span> bm::short_t* s, <span class="keywordtype">unsigned</span> count)
00164 {
00165 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buf = buf_;
00166 <span class="keyword">const</span> bm::short_t* s_end = s + count;
00167 <span class="keywordflow">do</span>
00168 {
00169 bm::short_t w16 = *s++;
00170 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> a = (<span class="keywordtype">unsigned</span> char) w16;
00171 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> b = (<span class="keywordtype">unsigned</span> char) (w16 >> 8);
00172
00173 *buf++ = a;
00174 *buf++ = b;
00175
00176 } <span class="keywordflow">while</span> (s < s_end);
00177
00178 buf_ = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)buf;
00179 }
00180
00181 <span class="comment"></span>
00182 <span class="comment">/*!</span>
00183 <span class="comment"> \fn unsigned encoder::size() const</span>
00184 <span class="comment"> \brief Returns size of the current encoding stream.</span>
00185 <span class="comment">*/</span>
<a name="l00186"></a><a class="code" href="a00066.html#a6">00186</a> <span class="keyword">inline</span> <span class="keywordtype">unsigned</span> encoder::size()<span class="keyword"> const</span>
00187 <span class="keyword"></span>{
00188 <span class="keywordflow">return</span> (<span class="keywordtype">unsigned</span>)(buf_ - start_);
00189 }
00190 <span class="comment"></span>
00191 <span class="comment">/*!</span>
00192 <span class="comment"> \fn void encoder::put_32(bm::word_t w)</span>
00193 <span class="comment"> \brief Puts 32 bits word into encoding buffer.</span>
00194 <span class="comment"> \param w - word to encode.</span>
00195 <span class="comment">*/</span>
<a name="l00196"></a><a class="code" href="a00066.html#a4">00196</a> <a class="code" href="a00077.html#a12">BMFORCEINLINE</a> <span class="keywordtype">void</span> encoder::put_32(bm::word_t w)
00197 {
00198 *buf_++ = (<span class="keywordtype">unsigned</span> char) w;
00199 *buf_++ = (<span class="keywordtype">unsigned</span> char) (w >> 8);
00200 *buf_++ = (<span class="keywordtype">unsigned</span> char) (w >> 16);
00201 *buf_++ = (<span class="keywordtype">unsigned</span> char) (w >> 24);
00202 }
00203 <span class="comment"></span>
00204 <span class="comment">/*!</span>
00205 <span class="comment"> \brief Encodes array of 32-bit words</span>
00206 <span class="comment">*/</span>
<a name="l00207"></a><a class="code" href="a00066.html#a5">00207</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> encoder::put_32(<span class="keyword">const</span> bm::word_t* w, <span class="keywordtype">unsigned</span> count)
00208 {
00209 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buf = buf_;
00210 <span class="keyword">const</span> bm::word_t* w_end = w + count;
00211 <span class="keywordflow">do</span>
00212 {
00213 bm::word_t w32 = *w++;
00214 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> a = (<span class="keywordtype">unsigned</span> char) w32;
00215 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> b = (<span class="keywordtype">unsigned</span> char) (w32 >> 8);
00216 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> c = (<span class="keywordtype">unsigned</span> char) (w32 >> 16);
00217 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> d = (<span class="keywordtype">unsigned</span> char) (w32 >> 24);
00218
00219 *buf++ = a;
00220 *buf++ = b;
00221 *buf++ = c;
00222 *buf++ = d;
00223 } <span class="keywordflow">while</span> (w < w_end);
00224
00225 buf_ = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)buf;
00226 }
00227
00228
00229 <span class="comment">// ---------------------------------------------------------------------</span>
00230 <span class="comment"></span>
00231 <span class="comment">/*!</span>
00232 <span class="comment"> \fn decoder::decoder(const unsigned char* buf) </span>
00233 <span class="comment"> \brief Construction</span>
00234 <span class="comment"> \param buf - pointer to the decoding memory. </span>
00235 <span class="comment">*/</span>
<a name="l00236"></a><a class="code" href="a00062.html#a0">00236</a> <span class="keyword">inline</span> decoder::decoder(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buf)
00237 : <a class="code" href="a00063.html">decoder_base</a>(buf)
00238 {
00239 }
00240 <span class="comment"></span>
00241 <span class="comment">/*!</span>
00242 <span class="comment"> \fn bm::short_t decoder::get_16()</span>
00243 <span class="comment"> \brief Reads 16bit word from the decoding buffer.</span>
00244 <span class="comment">*/</span>
<a name="l00245"></a><a class="code" href="a00062.html#a1">00245</a> <a class="code" href="a00077.html#a12">BMFORCEINLINE</a> bm::short_t decoder::get_16()
00246 {
00247 bm::short_t a = (bm::short_t)(buf_[0] + ((bm::short_t)buf_[1] << 8));
00248 buf_ += <span class="keyword">sizeof</span>(a);
00249 <span class="keywordflow">return</span> a;
00250 }
00251 <span class="comment"></span>
00252 <span class="comment">/*!</span>
00253 <span class="comment"> \fn bm::word_t decoder::get_32()</span>
00254 <span class="comment"> \brief Reads 32 bit word from the decoding buffer.</span>
00255 <span class="comment">*/</span>
<a name="l00256"></a><a class="code" href="a00062.html#a2">00256</a> <a class="code" href="a00077.html#a12">BMFORCEINLINE</a> bm::word_t decoder::get_32()
00257 {
00258 bm::word_t a = buf_[0]+ ((unsigned)buf_[1] << 8) +
00259 ((unsigned)buf_[2] << 16) + ((unsigned)buf_[3] << 24);
00260 buf_+=<span class="keyword">sizeof</span>(a);
00261 <span class="keywordflow">return</span> a;
00262 }
00263
00264 <span class="comment"></span>
00265 <span class="comment">/*!</span>
00266 <span class="comment"> \fn void decoder::get_32(bm::word_t* w, unsigned count)</span>
00267 <span class="comment"> \brief Reads block of 32-bit words from the decoding buffer.</span>
00268 <span class="comment"> \param w - pointer on memory block to read into.</span>
00269 <span class="comment"> \param count - size of memory block in words.</span>
00270 <span class="comment">*/</span>
<a name="l00271"></a><a class="code" href="a00062.html#a3">00271</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> decoder::get_32(bm::word_t* w, <span class="keywordtype">unsigned</span> count)
00272 {
00273
00274 <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buf = buf_;
00275 <span class="keyword">const</span> bm::word_t* w_end = w + count;
00276 <span class="keywordflow">do</span>
00277 {
00278 bm::word_t a = buf[0]+ ((unsigned)buf[1] << 8) +
00279 ((unsigned)buf[2] << 16) + ((unsigned)buf[3] << 24);
00280 *w++ = a;
00281 buf += <span class="keyword">sizeof</span>(a);
00282 } <span class="keywordflow">while</span> (w < w_end);
00283 buf_ = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)buf;
00284 }
00285 <span class="comment"></span>
00286 <span class="comment">/*!</span>
00287 <span class="comment"> \fn void decoder::get_16(bm::short_t* s, unsigned count)</span>
00288 <span class="comment"> \brief Reads block of 32-bit words from the decoding buffer.</span>
00289 <span class="comment"> \param s - pointer on memory block to read into.</span>
00290 <span class="comment"> \param count - size of memory block in words.</span>
00291 <span class="comment">*/</span>
<a name="l00292"></a><a class="code" href="a00062.html#a4">00292</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> decoder::get_16(bm::short_t* s, <span class="keywordtype">unsigned</span> count)
00293 {
00294 <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buf = buf_;
00295 <span class="keyword">const</span> bm::short_t* s_end = s + count;
00296 <span class="keywordflow">do</span>
00297 {
00298 bm::short_t a = (bm::short_t)(buf[0] + ((bm::short_t)buf[1] << 8));
00299 *s++ = a;
00300 buf += <span class="keyword">sizeof</span>(a);
00301 } <span class="keywordflow">while</span> (s < s_end);
00302 buf_ = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)buf;
00303 }
00304
00305
00306
00307 <span class="comment">// ---------------------------------------------------------------------</span>
00308
<a name="l00309"></a><a class="code" href="a00064.html#a0">00309</a> <span class="keyword">inline</span> decoder_little_endian::decoder_little_endian(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buf)
00310 : <a class="code" href="a00063.html">decoder_base</a>(buf)
00311 {
00312 }
00313
<a name="l00314"></a><a class="code" href="a00064.html#a1">00314</a> <a class="code" href="a00077.html#a12">BMFORCEINLINE</a> bm::short_t decoder_little_endian::get_16()
00315 {
00316 bm::short_t a = ((bm::short_t)buf_[0] << 8) + ((bm::short_t)buf_[1]);
00317 buf_ += <span class="keyword">sizeof</span>(a);
00318 <span class="keywordflow">return</span> a;
00319 }
00320
<a name="l00321"></a><a class="code" href="a00064.html#a2">00321</a> <a class="code" href="a00077.html#a12">BMFORCEINLINE</a> bm::word_t decoder_little_endian::get_32()
00322 {
00323 bm::word_t a = ((unsigned)buf_[0] << 24)+ ((unsigned)buf_[1] << 16) +
00324 ((unsigned)buf_[2] << 8) + ((unsigned)buf_[3]);
00325 buf_+=<span class="keyword">sizeof</span>(a);
00326 <span class="keywordflow">return</span> a;
00327 }
00328
<a name="l00329"></a><a class="code" href="a00064.html#a3">00329</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> decoder_little_endian::get_32(bm::word_t* w, <span class="keywordtype">unsigned</span> count)
00330 {
00331 <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buf = buf_;
00332 <span class="keyword">const</span> bm::word_t* w_end = w + count;
00333 <span class="keywordflow">do</span>
00334 {
00335 bm::word_t a = ((unsigned)buf[0] << 24)+ ((unsigned)buf[1] << 16) +
00336 ((unsigned)buf[2] << 8) + ((unsigned)buf[3]);
00337 *w++ = a;
00338 buf += <span class="keyword">sizeof</span>(a);
00339 } <span class="keywordflow">while</span> (w < w_end);
00340 buf_ = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)buf;
00341 }
00342
<a name="l00343"></a><a class="code" href="a00064.html#a4">00343</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> decoder_little_endian::get_16(bm::short_t* s, <span class="keywordtype">unsigned</span> count)
00344 {
00345 <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buf = buf_;
00346 <span class="keyword">const</span> bm::short_t* s_end = s + count;
00347 <span class="keywordflow">do</span>
00348 {
00349 bm::short_t a = ((bm::short_t)buf[0] << 8) + ((bm::short_t)buf[1]);
00350 *s++ = a;
00351 buf += <span class="keyword">sizeof</span>(a);
00352 } <span class="keywordflow">while</span> (s < s_end);
00353 buf_ = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)buf;
00354 }
00355
00356
00357 } <span class="comment">// namespace bm</span>
00358
00359 <span class="preprocessor">#endif</span>
00360 <span class="preprocessor"></span>
00361
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Thu Apr 20 13:28:46 2006 for BitMagic by
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