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| <div class="title">LZOCompressor.cs</div> </div> |
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| <a href="_l_z_o_compressor_8cs.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div> |
| <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one</span></div> |
| <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * or more contributor license agreements. See the NOTICE file</span></div> |
| <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * distributed with this work for additional information</span></div> |
| <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * regarding copyright ownership. The ASF licenses this file</span></div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * to you under the Apache License, Version 2.0 (the</span></div> |
| <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * "License"); you may not use this file except in compliance</span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * with the License. You may obtain a copy of the License at</span></div> |
| <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div> |
| <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * Unless required by applicable law or agreed to in writing,</span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * software distributed under the License is distributed on an</span></div> |
| <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * KIND, either express or implied. See the License for the</span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * specific language governing permissions and limitations</span></div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * under the License.</span></div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">*/</span></div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// LZO.Net</span></div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// $Id: LZOCompressor.cs,v 1.1 2004/02/22 17:44:04 laptop Exp $</span></div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div> |
| <div class="line"><a name="l00025"></a><span class="lineno"><a class="code" href="namespace_simplicit_1_1_net_1_1_lzo.html"> 25</a></span> <span class="keyword">namespace </span>Simplicit.Net.Lzo {</div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keyword">using</span> System;</div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keyword">using</span> System.Diagnostics;</div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keyword">using</span> System.Runtime.InteropServices;</div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div> |
| <div class="line"><a name="l00033"></a><span class="lineno"><a class="code" href="class_simplicit_1_1_net_1_1_lzo_1_1_l_z_o_compressor.html"> 33</a></span>  <span class="keyword">public</span> <span class="keyword">class </span><a class="code" href="class_simplicit_1_1_net_1_1_lzo_1_1_l_z_o_compressor.html" title="Wrapper class for the highly performant LZO compression library ">LZOCompressor</a> {</div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keyword">private</span> <span class="keyword">static</span> TraceSwitch _traceSwitch = <span class="keyword">new</span> TraceSwitch(<span class="stringliteral">"Simplicit.Net.Lzo"</span>, <span class="stringliteral">"Switch for tracing of the LZOCompressor-Class"</span>);</div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor"> #region Dll-Imports</span></div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor"></span> [DllImport(<span class="stringliteral">"lzo.dll"</span>)]</div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keyword">private</span> <span class="keyword">static</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> __lzo_init3();</div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  [DllImport(<span class="stringliteral">"lzo.dll"</span>)]</div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keyword">private</span> <span class="keyword">static</span> <span class="keyword">extern</span> <span class="keywordtype">string</span> lzo_version_string();</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  [DllImport(<span class="stringliteral">"lzo.dll"</span>)]</div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keyword">private</span> <span class="keyword">static</span> <span class="keyword">extern</span> <span class="keywordtype">string</span> lzo_version_date();</div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  [DllImport(<span class="stringliteral">"lzo.dll"</span>)]</div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keyword">private</span> <span class="keyword">static</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> lzo1x_1_compress(</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  byte[] src,</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordtype">int</span> src_len,</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  byte[] dst,</div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  ref <span class="keywordtype">int</span> dst_len,</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  byte[] wrkmem</div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  );</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  [DllImport(<span class="stringliteral">"lzo.dll"</span>)]</div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">private</span> <span class="keyword">static</span> <span class="keyword">extern</span> <span class="keywordtype">int</span> lzo1x_decompress(</div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  byte[] src,</div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordtype">int</span> src_len,</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  byte[] dst,</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  ref <span class="keywordtype">int</span> dst_len,</div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  byte[] wrkmem);</div> |
| <div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="preprocessor"> #endregion</span></div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor"></span> </div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keyword">private</span> byte[] _workMemory = <span class="keyword">new</span> byte[16384L * 4];</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">static</span> <a class="code" href="class_simplicit_1_1_net_1_1_lzo_1_1_l_z_o_compressor.html" title="Wrapper class for the highly performant LZO compression library ">LZOCompressor</a>() {</div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordtype">int</span> init = __lzo_init3();</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">if</span>(init != 0) {</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">throw</span> <span class="keyword">new</span> Exception(<span class="stringliteral">"Initialization of LZO-Compressor failed !"</span>);</div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  }</div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div> |
| <div class="line"><a name="l00072"></a><span class="lineno"><a class="code" href="class_simplicit_1_1_net_1_1_lzo_1_1_l_z_o_compressor.html#a4a6d931eac3574bf9485e8c24c69baee"> 72</a></span>  <span class="keyword">public</span> <a class="code" href="class_simplicit_1_1_net_1_1_lzo_1_1_l_z_o_compressor.html#a4a6d931eac3574bf9485e8c24c69baee" title="Constructor. ">LZOCompressor</a>() {</div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div> |
| <div class="line"><a name="l00078"></a><span class="lineno"><a class="code" href="class_simplicit_1_1_net_1_1_lzo_1_1_l_z_o_compressor.html#ad4bb12cfaba658b265ed801fe0d0d524"> 78</a></span>  <span class="keyword">public</span> <span class="keywordtype">string</span> <a class="code" href="_arabic_analyzer_8cs.html#a63c914dcb7d19365ff0f7c6ea7ef77c4">Version</a> {</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keyword">get</span> {</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> lzo_version_string();</div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  }</div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  }</div> |
| <div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div> |
| <div class="line"><a name="l00087"></a><span class="lineno"><a class="code" href="class_simplicit_1_1_net_1_1_lzo_1_1_l_z_o_compressor.html#a93df94b657983d424942786b62954207"> 87</a></span>  <span class="keyword">public</span> <span class="keywordtype">string</span> VersionDate {</div> |
| <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keyword">get</span> {</div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">return</span> lzo_version_date();</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  }</div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  }</div> |
| <div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div> |
| <div class="line"><a name="l00099"></a><span class="lineno"><a class="code" href="class_simplicit_1_1_net_1_1_lzo_1_1_l_z_o_compressor.html#aac07c3a8e45842cbdaf6d604d9c93ecc"> 99</a></span>  <span class="keyword">public</span> byte[] <a class="code" href="class_simplicit_1_1_net_1_1_lzo_1_1_l_z_o_compressor.html#aac07c3a8e45842cbdaf6d604d9c93ecc" title="Compresses a byte array and returns the compressed data in a new array. You need the original length ...">Compress</a>(byte[] src) {</div> |
| <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">if</span>(_traceSwitch.TraceVerbose) {</div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  Trace.WriteLine(String.Format(<span class="stringliteral">"LZOCompressor: trying to compress {0}"</span>, src.Length));</div> |
| <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  }</div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  byte[] dst = <span class="keyword">new</span> byte[src.Length + src.Length / 64 + 16 + 3 + 4];</div> |
| <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordtype">int</span> outlen = 0;</div> |
| <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  lzo1x_1_compress(src, src.Length, dst, ref outlen, _workMemory);</div> |
| <div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">if</span>(_traceSwitch.TraceVerbose) {</div> |
| <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  Trace.WriteLine(String.Format(<span class="stringliteral">"LZOCompressor: compressed {0} to {1} bytes"</span>, src.Length, outlen));</div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  }</div> |
| <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  byte[] ret = <span class="keyword">new</span> byte[outlen + 4];</div> |
| <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  Array.Copy(dst, 0, ret, 0, outlen);</div> |
| <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  byte[] outlenarr = BitConverter.GetBytes(src.Length);</div> |
| <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  Array.Copy(outlenarr, 0, ret, outlen, 4);</div> |
| <div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">return</span> ret;</div> |
| <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  }</div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div> |
| <div class="line"><a name="l00121"></a><span class="lineno"><a class="code" href="class_simplicit_1_1_net_1_1_lzo_1_1_l_z_o_compressor.html#a3e70013d66d5ac87d83d2919f48a4b1f"> 121</a></span>  <span class="keyword">public</span> byte[] <a class="code" href="class_simplicit_1_1_net_1_1_lzo_1_1_l_z_o_compressor.html#a3e70013d66d5ac87d83d2919f48a4b1f" title="Decompresses compressed data to its original state. ">Decompress</a>(byte[] src) {</div> |
| <div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">if</span>(_traceSwitch.TraceVerbose) {</div> |
| <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  Trace.WriteLine(String.Format(<span class="stringliteral">"LZOCompressor: trying to decompress {0}"</span>, src.Length));</div> |
| <div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  }</div> |
| <div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordtype">int</span> origlen = BitConverter.ToInt32(src, src.Length - 4);</div> |
| <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  byte[] dst = <span class="keyword">new</span> byte[origlen];</div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordtype">int</span> outlen = origlen;</div> |
| <div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  lzo1x_decompress(src, src.Length - 4, dst, ref outlen, _workMemory);</div> |
| <div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">if</span>(_traceSwitch.TraceVerbose) {</div> |
| <div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  Trace.WriteLine(String.Format(<span class="stringliteral">"LZOCompressor: decompressed {0} to {1} bytes"</span>, src.Length, origlen));</div> |
| <div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  }</div> |
| <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">return</span> dst;</div> |
| <div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  }</div> |
| <div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  }</div> |
| <div class="line"><a name="l00135"></a><span class="lineno"> 135</span> }</div> |
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