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albumshaper-2.1-6mdv2010.0.i586.rpm

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<title>AlbumShaper: jpegSize.h File Reference</title>
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<h1>jpegSize.h File Reference</h1>
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This graph shows which files directly or indirectly include this file:</div>
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<a href="jpegSize_8h_source.html">Go to the source code of this file.</a><table border="0" cellpadding="0" cellspacing="0">
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<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="jpegSize_8h.html#15dc90155bd20ad6b903b548af5690ae">getJPEGSize</a> (const char *filename, int &amp;<a class="el" href="blur_8cpp.html#2474a5474cbff19523a51eb1de01cda4">width</a>, int &amp;<a class="el" href="blur_8cpp.html#d12fc34ce789bce6c8a05d8a17138534">height</a>)</td></tr>

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<hr><h2>Function Documentation</h2>
<a class="anchor" name="15dc90155bd20ad6b903b548af5690ae"></a><!-- doxytag: member="jpegSize.h::getJPEGSize" ref="15dc90155bd20ad6b903b548af5690ae" args="(const char *filename, int &amp;width, int &amp;height)" -->
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          <td class="memname">bool getJPEGSize           </td>
          <td>(</td>
          <td class="paramtype">const char *&nbsp;</td>
          <td class="paramname"> <em>filename</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int &amp;&nbsp;</td>
          <td class="paramname"> <em>width</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int &amp;&nbsp;</td>
          <td class="paramname"> <em>height</em></td><td>&nbsp;</td>
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          <td></td>
          <td>)</td>
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<p>Definition at line <a class="el" href="jpegSize_8cpp_source.html#l00065">65</a> of file <a class="el" href="jpegSize_8cpp_source.html">jpegSize.cpp</a>.</p>

<p>References <a class="el" href="jpegSize_8cpp_source.html#l00149">first_marker()</a>, <a class="el" href="jpegSize_8cpp_source.html#l00056">infile</a>, <a class="el" href="jpegSize_8cpp_source.html#l00040">M_EOI</a>, <a class="el" href="jpegSize_8cpp_source.html#l00026">M_SOF0</a>, <a class="el" href="jpegSize_8cpp_source.html#l00027">M_SOF1</a>, <a class="el" href="jpegSize_8cpp_source.html#l00034">M_SOF10</a>, <a class="el" href="jpegSize_8cpp_source.html#l00035">M_SOF11</a>, <a class="el" href="jpegSize_8cpp_source.html#l00036">M_SOF13</a>, <a class="el" href="jpegSize_8cpp_source.html#l00037">M_SOF14</a>, <a class="el" href="jpegSize_8cpp_source.html#l00038">M_SOF15</a>, <a class="el" href="jpegSize_8cpp_source.html#l00028">M_SOF2</a>, <a class="el" href="jpegSize_8cpp_source.html#l00029">M_SOF3</a>, <a class="el" href="jpegSize_8cpp_source.html#l00030">M_SOF5</a>, <a class="el" href="jpegSize_8cpp_source.html#l00031">M_SOF6</a>, <a class="el" href="jpegSize_8cpp_source.html#l00032">M_SOF7</a>, <a class="el" href="jpegSize_8cpp_source.html#l00033">M_SOF9</a>, <a class="el" href="jpegSize_8cpp_source.html#l00041">M_SOS</a>, <a class="el" href="jpegSize_8cpp_source.html#l00172">next_marker()</a>, <a class="el" href="jpegSize_8cpp_source.html#l00261">process_SOFn()</a>, <a class="el" href="jpegSize_8cpp_source.html#l00052">READ_BINARY</a>, and <a class="el" href="jpegSize_8cpp_source.html#l00237">skip_variable()</a>.</p>

<p>Referenced by <a class="el" href="imageTools_8cpp_source.html#l00201">getImageSize()</a>, and <a class="el" href="imageTools_8cpp_source.html#l00033">isJpeg()</a>.</p>
<div class="fragment"><pre class="fragment"><a name="l00066"></a>00066 {
<a name="l00067"></a>00067   <span class="comment">//open file</span>
<a name="l00068"></a>00068   <span class="keywordflow">if</span> ((<a class="code" href="jpegSize_8cpp.html#f19157da745ecb3f2b088c8f3a10c0a7">infile</a> = fopen(filename, <a class="code" href="jpegSize_8cpp.html#7032a5e02e3a69b9bb87efd768bffabc">READ_BINARY</a>)) == NULL)
<a name="l00069"></a>00069     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00070"></a>00070 
<a name="l00071"></a>00071   <span class="comment">//this is scan_JPEG_header (int verbose)</span>
<a name="l00072"></a>00072   <span class="comment">//Parse the marker stream until SOFn is seen;</span>
<a name="l00073"></a>00073   <span class="keywordtype">int</span> marker;
<a name="l00074"></a>00074   
<a name="l00075"></a>00075   <span class="comment">//Expect SOI at start of file</span>
<a name="l00076"></a>00076   <span class="keywordflow">if</span> (!<a class="code" href="jpegSize_8cpp.html#03a794f9a32e547280feb641b6f482b7">first_marker</a>(&amp;marker))
<a name="l00077"></a>00077   {
<a name="l00078"></a>00078     fclose(<a class="code" href="jpegSize_8cpp.html#f19157da745ecb3f2b088c8f3a10c0a7">infile</a>);
<a name="l00079"></a>00079     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00080"></a>00080   }
<a name="l00081"></a>00081     
<a name="l00082"></a>00082     <span class="comment">/* Scan miscellaneous markers until we reach SOFn. */</span>
<a name="l00083"></a>00083   <span class="keywordflow">for</span> (;;) 
<a name="l00084"></a>00084   {
<a name="l00085"></a>00085     <span class="keywordflow">if</span>(!<a class="code" href="jpegSize_8cpp.html#3dc947c90667a67ece81b9e877575164">next_marker</a>(&amp;marker))
<a name="l00086"></a>00086     {
<a name="l00087"></a>00087       fclose(<a class="code" href="jpegSize_8cpp.html#f19157da745ecb3f2b088c8f3a10c0a7">infile</a>);
<a name="l00088"></a>00088       <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00089"></a>00089     }
<a name="l00090"></a>00090 
<a name="l00091"></a>00091     <span class="keywordflow">switch</span> (marker) 
<a name="l00092"></a>00092     {
<a name="l00093"></a>00093       <span class="comment">/* Note that marker codes 0xC4, 0xC8, 0xCC are not, and must not be,</span>
<a name="l00094"></a>00094 <span class="comment">       * treated as SOFn.  C4 in particular is actually DHT.</span>
<a name="l00095"></a>00095 <span class="comment">       */</span>
<a name="l00096"></a>00096     <span class="keywordflow">case</span> <a class="code" href="jpegSize_8cpp.html#e747795c32cea1314b49e9b7d65be454">M_SOF0</a>:    <span class="comment">/* Baseline */</span>
<a name="l00097"></a>00097     <span class="keywordflow">case</span> <a class="code" href="jpegSize_8cpp.html#b58d501dd163fdd0dee4ba6907e191a0">M_SOF1</a>:    <span class="comment">/* Extended sequential, Huffman */</span>
<a name="l00098"></a>00098     <span class="keywordflow">case</span> <a class="code" href="jpegSize_8cpp.html#eeeb620f261aa6b63448de940c7a7714">M_SOF2</a>:    <span class="comment">/* Progressive, Huffman */</span>
<a name="l00099"></a>00099     <span class="keywordflow">case</span> <a class="code" href="jpegSize_8cpp.html#7f09d1c601661800967c5d7e447d5a1f">M_SOF3</a>:    <span class="comment">/* Lossless, Huffman */</span>
<a name="l00100"></a>00100     <span class="keywordflow">case</span> <a class="code" href="jpegSize_8cpp.html#ce7276c4a30808cd6fe74abda2f16ad6">M_SOF5</a>:    <span class="comment">/* Differential sequential, Huffman */</span>
<a name="l00101"></a>00101     <span class="keywordflow">case</span> <a class="code" href="jpegSize_8cpp.html#3f5a3446a533760babdfd4d0f775e97c">M_SOF6</a>:    <span class="comment">/* Differential progressive, Huffman */</span>
<a name="l00102"></a>00102     <span class="keywordflow">case</span> <a class="code" href="jpegSize_8cpp.html#3805e83e6b1e8f52a78f1b6cb0668133">M_SOF7</a>:    <span class="comment">/* Differential lossless, Huffman */</span>
<a name="l00103"></a>00103     <span class="keywordflow">case</span> <a class="code" href="jpegSize_8cpp.html#5a510cc3009a14911acbbe7ddb378776">M_SOF9</a>:    <span class="comment">/* Extended sequential, arithmetic */</span>
<a name="l00104"></a>00104     <span class="keywordflow">case</span> <a class="code" href="jpegSize_8cpp.html#a718681ce1acfa7622ad9776404cfa98">M_SOF10</a>:   <span class="comment">/* Progressive, arithmetic */</span>
<a name="l00105"></a>00105     <span class="keywordflow">case</span> <a class="code" href="jpegSize_8cpp.html#51ac607f59c2730811fd514561770966">M_SOF11</a>:   <span class="comment">/* Lossless, arithmetic */</span>
<a name="l00106"></a>00106     <span class="keywordflow">case</span> <a class="code" href="jpegSize_8cpp.html#8ba4457ac8573d317b4562303197c72e">M_SOF13</a>:   <span class="comment">/* Differential sequential, arithmetic */</span>
<a name="l00107"></a>00107     <span class="keywordflow">case</span> <a class="code" href="jpegSize_8cpp.html#e3a73495aaced1aacd8577dac2dbe22e">M_SOF14</a>:   <span class="comment">/* Differential progressive, arithmetic */</span>
<a name="l00108"></a>00108     <span class="keywordflow">case</span> <a class="code" href="jpegSize_8cpp.html#6e4ec1d092fa9aaaa3a8a18aa1ee4381">M_SOF15</a>:   <span class="comment">/* Differential lossless, arithmetic */</span>      
<a name="l00109"></a>00109       <span class="keywordflow">if</span>(!<a class="code" href="jpegSize_8cpp.html#c9692d87db7c729416c07817a3d884ef">process_SOFn</a>(<a class="code" href="blur_8cpp.html#2474a5474cbff19523a51eb1de01cda4">width</a>, <a class="code" href="blur_8cpp.html#d12fc34ce789bce6c8a05d8a17138534">height</a>))
<a name="l00110"></a>00110       {
<a name="l00111"></a>00111         fclose(<a class="code" href="jpegSize_8cpp.html#f19157da745ecb3f2b088c8f3a10c0a7">infile</a>);
<a name="l00112"></a>00112         <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00113"></a>00113       }
<a name="l00114"></a>00114       <span class="keywordflow">else</span>
<a name="l00115"></a>00115       {
<a name="l00116"></a>00116         fclose(<a class="code" href="jpegSize_8cpp.html#f19157da745ecb3f2b088c8f3a10c0a7">infile</a>);
<a name="l00117"></a>00117         <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00118"></a>00118       }
<a name="l00119"></a>00119     <span class="keywordflow">case</span> <a class="code" href="jpegSize_8cpp.html#f5fdac2a556ee915b65b295faff22ead">M_SOS</a>:     <span class="comment">/* stop before hitting compressed data */</span>
<a name="l00120"></a>00120     {
<a name="l00121"></a>00121       fclose(<a class="code" href="jpegSize_8cpp.html#f19157da745ecb3f2b088c8f3a10c0a7">infile</a>);
<a name="l00122"></a>00122       <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00123"></a>00123     }
<a name="l00124"></a>00124     <span class="keywordflow">case</span> <a class="code" href="jpegSize_8cpp.html#43056e27046e8d6327320714a5a0b0f0">M_EOI</a>:     <span class="comment">/* in case it's a tables-only JPEG stream */</span>
<a name="l00125"></a>00125     {
<a name="l00126"></a>00126       fclose(<a class="code" href="jpegSize_8cpp.html#f19157da745ecb3f2b088c8f3a10c0a7">infile</a>);
<a name="l00127"></a>00127       <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00128"></a>00128     }
<a name="l00129"></a>00129     <span class="keywordflow">default</span>:      <span class="comment">/* Anything else just gets skipped */</span>
<a name="l00130"></a>00130       <a class="code" href="jpegSize_8cpp.html#c8503f8433f75c15d731b738830b8eb6">skip_variable</a>();    <span class="comment">/* we assume it has a parameter count... */</span>
<a name="l00131"></a>00131       <span class="keywordflow">break</span>;
<a name="l00132"></a>00132     }
<a name="l00133"></a>00133   } <span class="comment">/* end loop */</span>
<a name="l00134"></a>00134 
<a name="l00135"></a>00135 
<a name="l00136"></a>00136 <span class="comment">//cout &lt;&lt; "ERROR!\n";</span>
<a name="l00137"></a>00137 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00138"></a>00138 
<a name="l00139"></a>00139 }
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