~ubuntu-branches/ubuntu/trusty/bmagic/trusty-proposed

<h1>bmgamma.h</h1><a href="a00091.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 /*

<a name="l00003"></a>00003

<a name="l00004"></a>00004 Permission is hereby granted, free of charge, to any person

<a name="l00005"></a>00005 obtaining a copy of this software and associated documentation

<a name="l00006"></a>00006 files (the "Software"), to deal in the Software without restriction,

<a name="l00007"></a>00007 including without limitation the rights to use, copy, modify, merge,

<a name="l00008"></a>00008 publish, distribute, sublicense, and/or sell copies of the Software,

<a name="l00009"></a>00009 and to permit persons to whom the Software is furnished to do so,

<a name="l00010"></a>00010 subject to the following conditions:

<a name="l00011"></a>00011

<a name="l00012"></a>00012 The above copyright notice and this permission notice shall be included

<a name="l00013"></a>00013 in all copies or substantial portions of the Software.

<a name="l00014"></a>00014

<a name="l00015"></a>00015 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

<a name="l00016"></a>00016 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

<a name="l00017"></a>00017 OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

<a name="l00018"></a>00018 IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,

<a name="l00019"></a>00019 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

<a name="l00020"></a>00020 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

<a name="l00021"></a>00021 OTHER DEALINGS IN THE SOFTWARE.

<a name="l00022"></a>00022

<a name="l00023"></a>00023 For more information please visit: http://bmagic.sourceforge.net

<a name="l00024"></a>00024

<a name="l00025"></a>00025 */

<a name="l00026"></a>00026

<a name="l00027"></a>00027 #ifndef BMGAMMAENC__H__INCLUDED__

<a name="l00028"></a>00028 #define BMGAMMAENC__H__INCLUDED__

<a name="l00029"></a>00029

<a name="l00030"></a>00030

<a name="l00031"></a>00031 namespace bm

<a name="l00032"></a>00032 {

<a name="l00033"></a>00033

<a name="l00034"></a>00034

<a name="l00035"></a>00035 /**

<a name="l00036"></a>00036 Elias Gamma decoder

<a name="l00037"></a>00037 */

<a name="l00038"></a>00038 template<typename T, typename TBitIO>

<a name="l00039"></a>00039 class gamma_decoder

<a name="l00040"></a>00040 {

<a name="l00041"></a>00041 public:

<a name="l00042"></a><a class="code" href="a00064.html#af60ec7612ed672274332c3e2ad957dbb">00042</a> <a class="code" href="a00064.html#af60ec7612ed672274332c3e2ad957dbb">gamma_decoder</a>(TBitIO& bin) : bin_(bin)

<a name="l00043"></a>00043 {}

<a name="l00044"></a>00044

<a name="l00045"></a>00045 /**

<a name="l00046"></a>00046 Start encoding sequence

<a name="l00047"></a>00047 */

<a name="l00048"></a><a class="code" href="a00064.html#a2664246d51693ed9b42d90781b9f99dd">00048</a> void <a class="code" href="a00064.html#a2664246d51693ed9b42d90781b9f99dd" title="Start encoding sequence.">start</a>()

<a name="l00049"></a>00049 {}

<a name="l00050"></a>00050

<a name="l00051"></a>00051 /**

<a name="l00052"></a>00052 Stop decoding sequence

<a name="l00053"></a>00053 */

<a name="l00054"></a><a class="code" href="a00064.html#a14e761fa781cc3cb738a5485baad7c88">00054</a> void <a class="code" href="a00064.html#a14e761fa781cc3cb738a5485baad7c88" title="Stop decoding sequence.">stop</a>()

<a name="l00055"></a>00055 {}

<a name="l00056"></a>00056

<a name="l00057"></a>00057 /**

<a name="l00058"></a>00058 Decode word

<a name="l00059"></a>00059 */

<a name="l00060"></a><a class="code" href="a00064.html#adcc43680aa92a036bce01b60accbe419">00060</a> T <a class="code" href="a00064.html#adcc43680aa92a036bce01b60accbe419" title="Decode word.">operator()</a>(void)

<a name="l00061"></a>00061 {

<a name="l00062"></a>00062 unsigned l = bin_.eat_zero_bits();

<a name="l00063"></a>00063 bin_.get_bit(); // get border bit

<a name="l00064"></a>00064 T current = 0;

<a name="l00065"></a>00065 for (unsigned i = 0; i < l; ++i)

<a name="l00066"></a>00066 {

<a name="l00067"></a>00067 if (bin_.get_bit())

<a name="l00068"></a>00068 {

<a name="l00069"></a>00069 current += 1 << i;

<a name="l00070"></a>00070 }

<a name="l00071"></a>00071 }

<a name="l00072"></a>00072 current |= (1 << l);

100

<a name="l00073"></a>00073 return current;

101

<a name="l00074"></a>00074 }

102

<a name="l00075"></a>00075 private:

103

<a name="l00076"></a>00076 <a class="code" href="a00064.html#af60ec7612ed672274332c3e2ad957dbb">gamma_decoder</a>(const <a class="code" href="a00064.html" title="Elias Gamma decoder.">gamma_decoder</a>&);

104

<a name="l00077"></a>00077 <a class="code" href="a00064.html" title="Elias Gamma decoder.">gamma_decoder</a>& operator=(const <a class="code" href="a00064.html" title="Elias Gamma decoder.">gamma_decoder</a>&);

105

<a name="l00078"></a>00078 private:

106

<a name="l00079"></a>00079 TBitIO& bin_;

107

<a name="l00080"></a>00080 };

108

<a name="l00081"></a>00081

109

<a name="l00082"></a>00082

110

<a name="l00083"></a>00083

111

<a name="l00084"></a>00084 } // bm

112

<a name="l00085"></a>00085

113

<a name="l00086"></a>00086 #endif

114

<a name="l00087"></a>00087

115

</pre></div></div>

116

<hr size="1"/><address style="text-align: right;">Generated on Sun Nov 22 10:49:35 2009 for BitMagic by

117

118

119

</body>

120

</html>

Older »