<!DOCTYPE html> <!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]--> <!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]--> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>PIL.McIdasImagePlugin — Pillow (PIL Fork) 5.4.1 documentation</title> <script type="text/javascript" src="../../_static/js/modernizr.min.js"></script> <script type="text/javascript" id="documentation_options" data-url_root="../../" src="../../_static/documentation_options.js"></script> <script type="text/javascript" src="../../_static/jquery.js"></script> <script type="text/javascript" src="../../_static/underscore.js"></script> <script type="text/javascript" src="../../_static/doctools.js"></script> <script type="text/javascript" src="../../_static/language_data.js"></script> <script type="text/javascript" src="../../_static/js/script.js"></script> <script type="text/javascript" src="../../_static/js/theme.js"></script> <link 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href="../../index.html">Pillow (PIL Fork)</a> </nav> <div class="wy-nav-content"> <div class="rst-content"> <div role="navigation" aria-label="breadcrumbs navigation"> <ul class="wy-breadcrumbs"> <li><a href="../../index.html">Docs</a> »</li> <li><a href="../index.html">Module code</a> »</li> <li>PIL.McIdasImagePlugin</li> <li class="wy-breadcrumbs-aside"> </li> </ul> <hr/> </div> <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article"> <div itemprop="articleBody"> <h1>Source code for PIL.McIdasImagePlugin</h1><div class="highlight"><pre> <span></span><span class="c1">#</span> <span class="c1"># The Python Imaging Library.</span> <span class="c1"># $Id$</span> <span class="c1">#</span> <span class="c1"># Basic McIdas support for PIL</span> <span class="c1">#</span> <span class="c1"># History:</span> <span class="c1"># 1997-05-05 fl Created (8-bit images only)</span> <span class="c1"># 2009-03-08 fl Added 16/32-bit support.</span> <span class="c1">#</span> <span class="c1"># Thanks to Richard Jones and Craig Swank for specs and samples.</span> <span class="c1">#</span> <span class="c1"># Copyright (c) Secret Labs AB 1997.</span> <span class="c1"># Copyright (c) Fredrik Lundh 1997.</span> <span class="c1">#</span> <span class="c1"># See the README file for information on usage and redistribution.</span> <span class="c1">#</span> <span class="kn">import</span> <span class="nn">struct</span> <span class="kn">from</span> <span class="nn">.</span> <span class="k">import</span> <span class="n">Image</span><span class="p">,</span> <span class="n">ImageFile</span> <span class="n">__version__</span> <span class="o">=</span> <span class="s2">"0.2"</span> <span class="k">def</span> <span class="nf">_accept</span><span class="p">(</span><span class="n">s</span><span class="p">):</span> <span class="k">return</span> <span class="n">s</span><span class="p">[:</span><span class="mi">8</span><span class="p">]</span> <span class="o">==</span> <span class="sa">b</span><span class="s2">"</span><span class="se">\x00\x00\x00\x00\x00\x00\x00\x04</span><span class="s2">"</span> <span class="c1">##</span> <span class="c1"># Image plugin for McIdas area images.</span> <div class="viewcode-block" id="McIdasImageFile"><a class="viewcode-back" href="../../reference/plugins.html#PIL.McIdasImagePlugin.McIdasImageFile">[docs]</a><span class="k">class</span> <span class="nc">McIdasImageFile</span><span class="p">(</span><span class="n">ImageFile</span><span class="o">.</span><span class="n">ImageFile</span><span class="p">):</span> <span class="nb">format</span> <span class="o">=</span> <span class="s2">"MCIDAS"</span> <span class="n">format_description</span> <span class="o">=</span> <span class="s2">"McIdas area file"</span> <span class="k">def</span> <span class="nf">_open</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="c1"># parse area file directory</span> <span class="n">s</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">fp</span><span class="o">.</span><span class="n">read</span><span class="p">(</span><span class="mi">256</span><span class="p">)</span> <span class="k">if</span> <span class="ow">not</span> <span class="n">_accept</span><span class="p">(</span><span class="n">s</span><span class="p">)</span> <span class="ow">or</span> <span class="nb">len</span><span class="p">(</span><span class="n">s</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">256</span><span class="p">:</span> <span class="k">raise</span> <span class="ne">SyntaxError</span><span class="p">(</span><span class="s2">"not an McIdas area file"</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">area_descriptor_raw</span> <span class="o">=</span> <span class="n">s</span> <span class="bp">self</span><span class="o">.</span><span class="n">area_descriptor</span> <span class="o">=</span> <span class="n">w</span> <span class="o">=</span> <span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">+</span> <span class="nb">list</span><span class="p">(</span><span class="n">struct</span><span class="o">.</span><span class="n">unpack</span><span class="p">(</span><span class="s2">"!64i"</span><span class="p">,</span> <span class="n">s</span><span class="p">))</span> <span class="c1"># get mode</span> <span class="k">if</span> <span class="n">w</span><span class="p">[</span><span class="mi">11</span><span class="p">]</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> <span class="n">mode</span> <span class="o">=</span> <span class="n">rawmode</span> <span class="o">=</span> <span class="s2">"L"</span> <span class="k">elif</span> <span class="n">w</span><span class="p">[</span><span class="mi">11</span><span class="p">]</span> <span class="o">==</span> <span class="mi">2</span><span class="p">:</span> <span class="c1"># FIXME: add memory map support</span> <span class="n">mode</span> <span class="o">=</span> <span class="s2">"I"</span> <span class="n">rawmode</span> <span class="o">=</span> <span class="s2">"I;16B"</span> <span class="k">elif</span> <span class="n">w</span><span class="p">[</span><span class="mi">11</span><span class="p">]</span> <span class="o">==</span> <span class="mi">4</span><span class="p">:</span> <span class="c1"># FIXME: add memory map support</span> <span class="n">mode</span> <span class="o">=</span> <span class="s2">"I"</span> <span class="n">rawmode</span> <span class="o">=</span> <span class="s2">"I;32B"</span> <span class="k">else</span><span class="p">:</span> <span class="k">raise</span> <span class="ne">SyntaxError</span><span class="p">(</span><span class="s2">"unsupported McIdas format"</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">mode</span> <span class="o">=</span> <span class="n">mode</span> <span class="bp">self</span><span class="o">.</span><span class="n">_size</span> <span class="o">=</span> <span class="n">w</span><span class="p">[</span><span class="mi">10</span><span class="p">],</span> <span class="n">w</span><span class="p">[</span><span class="mi">9</span><span class="p">]</span> <span class="n">offset</span> <span class="o">=</span> <span class="n">w</span><span class="p">[</span><span class="mi">34</span><span class="p">]</span> <span class="o">+</span> <span class="n">w</span><span class="p">[</span><span class="mi">15</span><span class="p">]</span> <span class="n">stride</span> <span class="o">=</span> <span class="n">w</span><span class="p">[</span><span class="mi">15</span><span class="p">]</span> <span class="o">+</span> <span class="n">w</span><span class="p">[</span><span class="mi">10</span><span class="p">]</span><span class="o">*</span><span class="n">w</span><span class="p">[</span><span class="mi">11</span><span class="p">]</span><span class="o">*</span><span class="n">w</span><span class="p">[</span><span class="mi">14</span><span class="p">]</span> <span class="bp">self</span><span class="o">.</span><span class="n">tile</span> <span class="o">=</span> <span class="p">[(</span><span class="s2">"raw"</span><span class="p">,</span> <span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">size</span><span class="p">,</span> <span class="n">offset</span><span class="p">,</span> <span class="p">(</span><span class="n">rawmode</span><span class="p">,</span> <span class="n">stride</span><span class="p">,</span> <span class="mi">1</span><span class="p">))]</span></div> <span class="c1"># --------------------------------------------------------------------</span> <span class="c1"># registry</span> <span class="n">Image</span><span class="o">.</span><span class="n">register_open</span><span class="p">(</span><span class="n">McIdasImageFile</span><span class="o">.</span><span class="n">format</span><span class="p">,</span> <span class="n">McIdasImageFile</span><span class="p">,</span> <span class="n">_accept</span><span class="p">)</span> <span class="c1"># no default extension</span> </pre></div> </div> </div> <footer> <hr/> <div role="contentinfo"> <p> © Copyright 1995-2011 Fredrik Lundh, 2010-2018 Alex Clark and Contributors </p> </div> Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/rtfd/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. </footer> </div> </div> </section> </div> <script type="text/javascript"> jQuery(function () { SphinxRtdTheme.Navigation.enable(true); }); </script> </body> </html>