<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>PIL._binary — Pillow (PIL fork) 2.2.0 documentation</title> <link rel="stylesheet" href="../../_static/default.css" type="text/css" /> <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" /> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT: '../../', VERSION: '2.2.0', COLLAPSE_INDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: true }; </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> <link rel="top" title="Pillow (PIL fork) 2.2.0 documentation" href="../../index.html" /> <link rel="up" title="Module code" href="../index.html" /> </head> <body> <div class="related"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../../genindex.html" title="General Index" accesskey="I">index</a></li> <li class="right" > <a href="../../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li><a href="../../index.html">Pillow (PIL fork) 2.2.0 documentation</a> »</li> <li><a href="../index.html" accesskey="U">Module code</a> »</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body"> <h1>Source code for PIL._binary</h1><div class="highlight"><pre> <span class="c">#</span> <span class="c"># The Python Imaging Library.</span> <span class="c"># $Id$</span> <span class="c">#</span> <span class="c"># Binary input/output support routines.</span> <span class="c">#</span> <span class="c"># Copyright (c) 1997-2003 by Secret Labs AB</span> <span class="c"># Copyright (c) 1995-2003 by Fredrik Lundh</span> <span class="c"># Copyright (c) 2012 by Brian Crowell</span> <span class="c">#</span> <span class="c"># See the README file for information on usage and redistribution.</span> <span class="c">#</span> <span class="k">if</span> <span class="nb">bytes</span> <span class="ow">is</span> <span class="nb">str</span><span class="p">:</span> <span class="k">def</span> <span class="nf">i8</span><span class="p">(</span><span class="n">c</span><span class="p">):</span> <span class="k">return</span> <span class="nb">ord</span><span class="p">(</span><span class="n">c</span><span class="p">)</span> <span class="k">def</span> <span class="nf">o8</span><span class="p">(</span><span class="n">i</span><span class="p">):</span> <span class="k">return</span> <span class="nb">chr</span><span class="p">(</span><span class="n">i</span><span class="o">&</span><span class="mi">255</span><span class="p">)</span> <span class="k">else</span><span class="p">:</span> <div class="viewcode-block" id="i8"><a class="viewcode-back" href="../../PIL.html#PIL._binary.i8">[docs]</a> <span class="k">def</span> <span class="nf">i8</span><span class="p">(</span><span class="n">c</span><span class="p">):</span> <span class="k">return</span> <span class="n">c</span> <span class="k">if</span> <span class="n">c</span><span class="o">.</span><span class="n">__class__</span> <span class="ow">is</span> <span class="nb">int</span> <span class="k">else</span> <span class="n">c</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> </div> <div class="viewcode-block" id="o8"><a class="viewcode-back" href="../../PIL.html#PIL._binary.o8">[docs]</a> <span class="k">def</span> <span class="nf">o8</span><span class="p">(</span><span class="n">i</span><span class="p">):</span> <span class="k">return</span> <span class="nb">bytes</span><span class="p">((</span><span class="n">i</span><span class="o">&</span><span class="mi">255</span><span class="p">,))</span> <span class="c"># Input, le = little endian, be = big endian</span></div> <div class="viewcode-block" id="i16le"><a class="viewcode-back" href="../../PIL.html#PIL._binary.i16le">[docs]</a><span class="k">def</span> <span class="nf">i16le</span><span class="p">(</span><span class="n">c</span><span class="p">,</span> <span class="n">o</span><span class="o">=</span><span class="mi">0</span><span class="p">):</span> <span class="k">return</span> <span class="n">i8</span><span class="p">(</span><span class="n">c</span><span class="p">[</span><span class="n">o</span><span class="p">])</span> <span class="o">|</span> <span class="p">(</span><span class="n">i8</span><span class="p">(</span><span class="n">c</span><span class="p">[</span><span class="n">o</span><span class="o">+</span><span class="mi">1</span><span class="p">])</span><span class="o"><<</span><span class="mi">8</span><span class="p">)</span> </div> <div class="viewcode-block" id="i32le"><a class="viewcode-back" href="../../PIL.html#PIL._binary.i32le">[docs]</a><span class="k">def</span> <span class="nf">i32le</span><span class="p">(</span><span class="n">c</span><span class="p">,</span> <span class="n">o</span><span class="o">=</span><span class="mi">0</span><span class="p">):</span> <span class="k">return</span> <span class="n">i8</span><span class="p">(</span><span class="n">c</span><span class="p">[</span><span class="n">o</span><span class="p">])</span> <span class="o">|</span> <span class="p">(</span><span class="n">i8</span><span class="p">(</span><span class="n">c</span><span class="p">[</span><span class="n">o</span><span class="o">+</span><span class="mi">1</span><span class="p">])</span><span class="o"><<</span><span class="mi">8</span><span class="p">)</span> <span class="o">|</span> <span class="p">(</span><span class="n">i8</span><span class="p">(</span><span class="n">c</span><span class="p">[</span><span class="n">o</span><span class="o">+</span><span class="mi">2</span><span class="p">])</span><span class="o"><<</span><span class="mi">16</span><span class="p">)</span> <span class="o">|</span> <span class="p">(</span><span class="n">i8</span><span class="p">(</span><span class="n">c</span><span class="p">[</span><span class="n">o</span><span class="o">+</span><span class="mi">3</span><span class="p">])</span><span class="o"><<</span><span class="mi">24</span><span class="p">)</span> </div> <div class="viewcode-block" id="i16be"><a class="viewcode-back" href="../../PIL.html#PIL._binary.i16be">[docs]</a><span class="k">def</span> <span class="nf">i16be</span><span class="p">(</span><span class="n">c</span><span class="p">,</span> <span class="n">o</span><span class="o">=</span><span class="mi">0</span><span class="p">):</span> <span class="k">return</span> <span class="p">(</span><span class="n">i8</span><span class="p">(</span><span class="n">c</span><span class="p">[</span><span class="n">o</span><span class="p">])</span><span class="o"><<</span><span class="mi">8</span><span class="p">)</span> <span class="o">|</span> <span class="n">i8</span><span class="p">(</span><span class="n">c</span><span class="p">[</span><span class="n">o</span><span class="o">+</span><span class="mi">1</span><span class="p">])</span> </div> <div class="viewcode-block" id="i32be"><a class="viewcode-back" href="../../PIL.html#PIL._binary.i32be">[docs]</a><span class="k">def</span> <span class="nf">i32be</span><span class="p">(</span><span class="n">c</span><span class="p">,</span> <span class="n">o</span><span class="o">=</span><span class="mi">0</span><span class="p">):</span> <span class="k">return</span> <span class="p">(</span><span class="n">i8</span><span class="p">(</span><span class="n">c</span><span class="p">[</span><span class="n">o</span><span class="p">])</span><span class="o"><<</span><span class="mi">24</span><span class="p">)</span> <span class="o">|</span> <span class="p">(</span><span class="n">i8</span><span class="p">(</span><span class="n">c</span><span class="p">[</span><span class="n">o</span><span class="o">+</span><span class="mi">1</span><span class="p">])</span><span class="o"><<</span><span class="mi">16</span><span class="p">)</span> <span class="o">|</span> <span class="p">(</span><span class="n">i8</span><span class="p">(</span><span class="n">c</span><span class="p">[</span><span class="n">o</span><span class="o">+</span><span class="mi">2</span><span class="p">])</span><span class="o"><<</span><span class="mi">8</span><span class="p">)</span> <span class="o">|</span> <span class="n">i8</span><span class="p">(</span><span class="n">c</span><span class="p">[</span><span class="n">o</span><span class="o">+</span><span class="mi">3</span><span class="p">])</span> <span class="c"># Output, le = little endian, be = big endian</span></div> <div class="viewcode-block" id="o16le"><a class="viewcode-back" href="../../PIL.html#PIL._binary.o16le">[docs]</a><span class="k">def</span> <span class="nf">o16le</span><span class="p">(</span><span class="n">i</span><span class="p">):</span> <span class="k">return</span> <span class="n">o8</span><span class="p">(</span><span class="n">i</span><span class="p">)</span> <span class="o">+</span> <span class="n">o8</span><span class="p">(</span><span class="n">i</span><span class="o">>></span><span class="mi">8</span><span class="p">)</span> </div> <div class="viewcode-block" id="o32le"><a class="viewcode-back" href="../../PIL.html#PIL._binary.o32le">[docs]</a><span class="k">def</span> <span class="nf">o32le</span><span class="p">(</span><span class="n">i</span><span class="p">):</span> <span class="k">return</span> <span class="n">o8</span><span class="p">(</span><span class="n">i</span><span class="p">)</span> <span class="o">+</span> <span class="n">o8</span><span class="p">(</span><span class="n">i</span><span class="o">>></span><span class="mi">8</span><span class="p">)</span> <span class="o">+</span> <span class="n">o8</span><span class="p">(</span><span class="n">i</span><span class="o">>></span><span class="mi">16</span><span class="p">)</span> <span class="o">+</span> <span class="n">o8</span><span class="p">(</span><span class="n">i</span><span class="o">>></span><span class="mi">24</span><span class="p">)</span> </div> <div class="viewcode-block" id="o16be"><a class="viewcode-back" href="../../PIL.html#PIL._binary.o16be">[docs]</a><span class="k">def</span> <span class="nf">o16be</span><span class="p">(</span><span class="n">i</span><span class="p">):</span> <span class="k">return</span> <span class="n">o8</span><span class="p">(</span><span class="n">i</span><span class="o">>></span><span class="mi">8</span><span class="p">)</span> <span class="o">+</span> <span class="n">o8</span><span class="p">(</span><span class="n">i</span><span class="p">)</span> </div> <div class="viewcode-block" id="o32be"><a class="viewcode-back" href="../../PIL.html#PIL._binary.o32be">[docs]</a><span class="k">def</span> <span class="nf">o32be</span><span class="p">(</span><span class="n">i</span><span class="p">):</span> <span class="k">return</span> <span class="n">o8</span><span class="p">(</span><span class="n">i</span><span class="o">>></span><span class="mi">24</span><span class="p">)</span> <span class="o">+</span> <span class="n">o8</span><span class="p">(</span><span class="n">i</span><span class="o">>></span><span class="mi">16</span><span class="p">)</span> <span class="o">+</span> <span class="n">o8</span><span class="p">(</span><span class="n">i</span><span class="o">>></span><span class="mi">8</span><span class="p">)</span> <span class="o">+</span> <span class="n">o8</span><span class="p">(</span><span class="n">i</span><span class="p">)</span> </pre></div></div> </div> </div> </div> <div class="sphinxsidebar"> <div class="sphinxsidebarwrapper"> <div id="searchbox" style="display: none"> <h3>Quick search</h3> <form class="search" action="../../search.html" method="get"> <input type="text" name="q" /> <input type="submit" value="Go" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> <p class="searchtip" style="font-size: 90%"> Enter search terms or a module, class or function name. </p> </div> <script type="text/javascript">$('#searchbox').show(0);</script> </div> </div> <div class="clearer"></div> </div> <div class="related"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../../genindex.html" title="General Index" >index</a></li> <li class="right" > <a href="../../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li><a href="../../index.html">Pillow (PIL fork) 2.2.0 documentation</a> »</li> <li><a href="../index.html" >Module code</a> »</li> </ul> </div> <div class="footer"> © Copyright 1997-2011 by Secret Labs AB, 1995-2011 by Fredrik Lundh, 2010-2013 Alex Clark. 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