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<div id="projectname">iipsrv
 <span id="projectnumber">1.1</span>
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<div id="projectbrief">iipsrv is an advanced high-performance feature-rich image server for web-based streamed viewing and zooming of ultra high-resolution images</div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/* Generic compressor class - extended by JPEG and PNG Compressor classes</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"> Copyright (C) 2017-2018 Ruven Pillay</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"></span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> This program is free software; you can redistribute it and/or modify</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> it under the terms of the GNU General Public License as published by</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> the Free Software Foundation; either version 3 of the License, or</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> (at your option) any later version.</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"></span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> This program is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> GNU General Public License for more details.</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"></span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> You should have received a copy of the GNU General Public License</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> along with this program; if not, write to the Free Software Foundation,</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">*/</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#ifndef _COMPRESSOR_H</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#define _COMPRESSOR_H</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</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"> 25</span> </div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <string></span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include "RawTile.h"</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div><div class="line"><a name="l00032"></a><span class="lineno"><a class="line" href="classCompressor.html"> 32</a></span> <span class="keyword">class </span><a class="code" href="classCompressor.html">Compressor</a> {</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div><div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="classCompressor.html#a7a48db7e754ff8335485941f704a40a3"> 37</a></span>  <span class="keywordtype">int</span> <a class="code" href="classCompressor.html#a7a48db7e754ff8335485941f704a40a3">Q</a>;</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div><div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="classCompressor.html#a788d5559f4276c1498cf9bcdca2d42cb"> 40</a></span>  std::string <a class="code" href="classCompressor.html#a788d5559f4276c1498cf9bcdca2d42cb">icc</a>;</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div><div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="classCompressor.html#a45698fa97911f4ecfe030c077c139c2b"> 43</a></span>  std::string <a class="code" href="classCompressor.html#a45698fa97911f4ecfe030c077c139c2b">xmp</a>;</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div><div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="classCompressor.html#a59d252c2c1499e02ca9f0ff0be144b23"> 46</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classCompressor.html#a59d252c2c1499e02ca9f0ff0be144b23">writeICCProfile</a>() {};</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div><div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="classCompressor.html#a61e5fb15b9b5838a79fe22a5a2430a58"> 49</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classCompressor.html#a61e5fb15b9b5838a79fe22a5a2430a58">writeXMPMetadata</a>() {};</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> </div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">virtual</span> ~<a class="code" href="classCompressor.html">Compressor</a>() {};</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> </div><div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="classCompressor.html#a70078e753e103bd4a642118d7412dd79"> 58</a></span>  <span class="keyword">inline</span> <span class="keywordtype">int</span> <a class="code" href="classCompressor.html#a70078e753e103bd4a642118d7412dd79">getQuality</a>() { <span class="keywordflow">return</span> <a class="code" href="classCompressor.html#a7a48db7e754ff8335485941f704a40a3">Q</a>; }</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div><div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="classCompressor.html#af23c55b06260b6dd14b288bedf409b3b"> 63</a></span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classCompressor.html#af23c55b06260b6dd14b288bedf409b3b">setICCProfile</a>( <span class="keyword">const</span> std::string& profile ){ <a class="code" href="classCompressor.html#a788d5559f4276c1498cf9bcdca2d42cb">icc</a> = profile; }</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div><div class="line"><a name="l00065"></a><span class="lineno"> 65</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"><a class="line" href="classCompressor.html#afc78f825498b3a33380ef251d6a60f87"> 68</a></span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classCompressor.html#afc78f825498b3a33380ef251d6a60f87">setXMPMetadata</a>( <span class="keyword">const</span> std::string& x ){ <a class="code" href="classCompressor.html#a45698fa97911f4ecfe030c077c139c2b">xmp</a> = x; }</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div><div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="classCompressor.html#aeb0d63187b16a4de4ec27ea59295b1e5"> 73</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classCompressor.html#aeb0d63187b16a4de4ec27ea59295b1e5">getHeaderSize</a>() { <span class="keywordflow">return</span> 0; };</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div><div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="classCompressor.html#a94e14df8f3dfe7968a9b77dabb4e2c45"> 78</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* <a class="code" href="classCompressor.html#a94e14df8f3dfe7968a9b77dabb4e2c45">getHeader</a>() { <span class="keywordflow">return</span> NULL; };</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div><div class="line"><a name="l00088"></a><span class="lineno"><a class="line" href="classCompressor.html#ad83402c75cd8f85c9263c1e990ae1e5f"> 88</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classCompressor.html#ad83402c75cd8f85c9263c1e990ae1e5f">InitCompression</a>( <span class="keyword">const</span> <a class="code" href="classRawTile.html">RawTile</a>& rawtile, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> strip_height ) {};</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div><div class="line"><a name="l00097"></a><span class="lineno"><a class="line" href="classCompressor.html#a24549398c73442cf45b81e5cdeaf27c0"> 97</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classCompressor.html#a24549398c73442cf45b81e5cdeaf27c0">CompressStrip</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* s, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* o, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> tile_height ) { <span class="keywordflow">return</span> 0; };</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div><div class="line"><a name="l00104"></a><span class="lineno"><a class="line" href="classCompressor.html#a7a98fff52328aeea262452ee8949691d"> 104</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classCompressor.html#a7a98fff52328aeea262452ee8949691d">Finish</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* output ) { <span class="keywordflow">return</span> 0; };</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div><div class="line"><a name="l00111"></a><span class="lineno"><a class="line" href="classCompressor.html#af57b26b9e84ee92afa663324f464c3e0"> 111</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classCompressor.html#af57b26b9e84ee92afa663324f464c3e0">Compress</a>( <a class="code" href="classRawTile.html">RawTile</a>& t ) { <span class="keywordflow">return</span> 0; };</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div><div class="line"><a name="l00116"></a><span class="lineno"><a class="line" href="classCompressor.html#af62307978b22d731e345eff148cab268"> 116</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classCompressor.html#af62307978b22d731e345eff148cab268">addXMPMetadata</a>( <span class="keyword">const</span> std::string& m ) {};</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div><div class="line"><a name="l00121"></a><span class="lineno"><a class="line" href="classCompressor.html#ade8725e65b19b79f3e481d519664b683"> 121</a></span>  <span class="keyword">virtual</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="classCompressor.html#ade8725e65b19b79f3e481d519664b683">getMimeType</a>() { <span class="keywordflow">return</span> <span class="stringliteral">"image/example"</span>; };</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div><div class="line"><a name="l00126"></a><span class="lineno"><a class="line" href="classCompressor.html#aac704b00452d217cfbc5fb02a52505e1"> 126</a></span>  <span class="keyword">virtual</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="classCompressor.html#aac704b00452d217cfbc5fb02a52505e1">getSuffix</a>() { <span class="keywordflow">return</span> <span class="stringliteral">"img"</span>; };</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> };</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="classCompressor_html_a59d252c2c1499e02ca9f0ff0be144b23"><div class="ttname"><a href="classCompressor.html#a59d252c2c1499e02ca9f0ff0be144b23">Compressor::writeICCProfile</a></div><div class="ttdeci">virtual void writeICCProfile()</div><div class="ttdoc">Write ICC profile. </div><div class="ttdef"><b>Definition:</b> Compressor.h:46</div></div>
<div class="ttc" id="classCompressor_html_a788d5559f4276c1498cf9bcdca2d42cb"><div class="ttname"><a href="classCompressor.html#a788d5559f4276c1498cf9bcdca2d42cb">Compressor::icc</a></div><div class="ttdeci">std::string icc</div><div class="ttdoc">ICC Profile. </div><div class="ttdef"><b>Definition:</b> Compressor.h:40</div></div>
<div class="ttc" id="classCompressor_html_a24549398c73442cf45b81e5cdeaf27c0"><div class="ttname"><a href="classCompressor.html#a24549398c73442cf45b81e5cdeaf27c0">Compressor::CompressStrip</a></div><div class="ttdeci">virtual unsigned int CompressStrip(unsigned char *s, unsigned char *o, unsigned int tile_height)</div><div class="ttdoc">Compress a strip of image data. </div><div class="ttdef"><b>Definition:</b> Compressor.h:97</div></div>
<div class="ttc" id="classCompressor_html_ade8725e65b19b79f3e481d519664b683"><div class="ttname"><a href="classCompressor.html#ade8725e65b19b79f3e481d519664b683">Compressor::getMimeType</a></div><div class="ttdeci">virtual const char * getMimeType()</div><div class="ttdoc">Get mime type. </div><div class="ttdef"><b>Definition:</b> Compressor.h:121</div></div>
<div class="ttc" id="classCompressor_html_a45698fa97911f4ecfe030c077c139c2b"><div class="ttname"><a href="classCompressor.html#a45698fa97911f4ecfe030c077c139c2b">Compressor::xmp</a></div><div class="ttdeci">std::string xmp</div><div class="ttdoc">XMP metadata. </div><div class="ttdef"><b>Definition:</b> Compressor.h:43</div></div>
<div class="ttc" id="classCompressor_html_a7a48db7e754ff8335485941f704a40a3"><div class="ttname"><a href="classCompressor.html#a7a48db7e754ff8335485941f704a40a3">Compressor::Q</a></div><div class="ttdeci">int Q</div><div class="ttdoc">Quality level. </div><div class="ttdef"><b>Definition:</b> Compressor.h:37</div></div>
<div class="ttc" id="classCompressor_html"><div class="ttname"><a href="classCompressor.html">Compressor</a></div><div class="ttdoc">Base class for IIP output images. </div><div class="ttdef"><b>Definition:</b> Compressor.h:32</div></div>
<div class="ttc" id="classCompressor_html_ad83402c75cd8f85c9263c1e990ae1e5f"><div class="ttname"><a href="classCompressor.html#ad83402c75cd8f85c9263c1e990ae1e5f">Compressor::InitCompression</a></div><div class="ttdeci">virtual void InitCompression(const RawTile &rawtile, unsigned int strip_height)</div><div class="ttdoc">Initialise strip based compression. </div><div class="ttdef"><b>Definition:</b> Compressor.h:88</div></div>
<div class="ttc" id="classCompressor_html_aac704b00452d217cfbc5fb02a52505e1"><div class="ttname"><a href="classCompressor.html#aac704b00452d217cfbc5fb02a52505e1">Compressor::getSuffix</a></div><div class="ttdeci">virtual const char * getSuffix()</div><div class="ttdoc">Get file suffix. </div><div class="ttdef"><b>Definition:</b> Compressor.h:126</div></div>
<div class="ttc" id="classCompressor_html_af62307978b22d731e345eff148cab268"><div class="ttname"><a href="classCompressor.html#af62307978b22d731e345eff148cab268">Compressor::addXMPMetadata</a></div><div class="ttdeci">virtual void addXMPMetadata(const std::string &m)</div><div class="ttdoc">Add metadata to the image header. </div><div class="ttdef"><b>Definition:</b> Compressor.h:116</div></div>
<div class="ttc" id="classCompressor_html_af23c55b06260b6dd14b288bedf409b3b"><div class="ttname"><a href="classCompressor.html#af23c55b06260b6dd14b288bedf409b3b">Compressor::setICCProfile</a></div><div class="ttdeci">void setICCProfile(const std::string &profile)</div><div class="ttdoc">Set the ICC profile. </div><div class="ttdef"><b>Definition:</b> Compressor.h:63</div></div>
<div class="ttc" id="classCompressor_html_afc78f825498b3a33380ef251d6a60f87"><div class="ttname"><a href="classCompressor.html#afc78f825498b3a33380ef251d6a60f87">Compressor::setXMPMetadata</a></div><div class="ttdeci">void setXMPMetadata(const std::string &x)</div><div class="ttdoc">Set XMP metadata. </div><div class="ttdef"><b>Definition:</b> Compressor.h:68</div></div>
<div class="ttc" id="classCompressor_html_a61e5fb15b9b5838a79fe22a5a2430a58"><div class="ttname"><a href="classCompressor.html#a61e5fb15b9b5838a79fe22a5a2430a58">Compressor::writeXMPMetadata</a></div><div class="ttdeci">virtual void writeXMPMetadata()</div><div class="ttdoc">Write XMP metadata. </div><div class="ttdef"><b>Definition:</b> Compressor.h:49</div></div>
<div class="ttc" id="classCompressor_html_a94e14df8f3dfe7968a9b77dabb4e2c45"><div class="ttname"><a href="classCompressor.html#a94e14df8f3dfe7968a9b77dabb4e2c45">Compressor::getHeader</a></div><div class="ttdeci">virtual unsigned char * getHeader()</div><div class="ttdoc">Return a pointer to the image header itself. </div><div class="ttdef"><b>Definition:</b> Compressor.h:78</div></div>
<div class="ttc" id="classCompressor_html_a7a98fff52328aeea262452ee8949691d"><div class="ttname"><a href="classCompressor.html#a7a98fff52328aeea262452ee8949691d">Compressor::Finish</a></div><div class="ttdeci">virtual unsigned int Finish(unsigned char *output)</div><div class="ttdoc">Finish the strip based compression and free memory. </div><div class="ttdef"><b>Definition:</b> Compressor.h:104</div></div>
<div class="ttc" id="classCompressor_html_af57b26b9e84ee92afa663324f464c3e0"><div class="ttname"><a href="classCompressor.html#af57b26b9e84ee92afa663324f464c3e0">Compressor::Compress</a></div><div class="ttdeci">virtual unsigned int Compress(RawTile &t)</div><div class="ttdoc">Compress an entire buffer of image data at once in one command. </div><div class="ttdef"><b>Definition:</b> Compressor.h:111</div></div>
<div class="ttc" id="classRawTile_html"><div class="ttname"><a href="classRawTile.html">RawTile</a></div><div class="ttdoc">Class to represent a single image tile. </div><div class="ttdef"><b>Definition:</b> RawTile.h:45</div></div>
<div class="ttc" id="classCompressor_html_a70078e753e103bd4a642118d7412dd79"><div class="ttname"><a href="classCompressor.html#a70078e753e103bd4a642118d7412dd79">Compressor::getQuality</a></div><div class="ttdeci">int getQuality()</div><div class="ttdoc">Get the current quality level. </div><div class="ttdef"><b>Definition:</b> Compressor.h:58</div></div>
<div class="ttc" id="classCompressor_html_aeb0d63187b16a4de4ec27ea59295b1e5"><div class="ttname"><a href="classCompressor.html#aeb0d63187b16a4de4ec27ea59295b1e5">Compressor::getHeaderSize</a></div><div class="ttdeci">virtual unsigned int getHeaderSize()</div><div class="ttdoc">Return the image header size. </div><div class="ttdef"><b>Definition:</b> Compressor.h:73</div></div>
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