<!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._binary — 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 rel="stylesheet" href="../../_static/css/theme.css" type="text/css" /> <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" /> <link rel="author" title="About these documents" href="../../about.html" /> <link rel="index" title="Index" href="../../genindex.html" /> <link rel="search" title="Search" href="../../search.html" /> </head> <body class="wy-body-for-nav"> <div class="wy-grid-for-nav"> <nav data-toggle="wy-nav-shift" class="wy-nav-side"> <div class="wy-side-scroll"> <div class="wy-side-nav-search" > <a href="../../index.html" class="icon icon-home"> Pillow (PIL Fork) </a> <div class="version"> 5.4.1 </div> <div role="search"> <form id="rtd-search-form" class="wy-form" action="../../search.html" method="get"> <input type="text" name="q" placeholder="Search docs" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> </div> </div> <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation"> <ul> <li class="toctree-l1"><a class="reference internal" href="../../installation.html">Installation</a></li> <li class="toctree-l1"><a class="reference internal" href="../../handbook/index.html">Handbook</a></li> <li class="toctree-l1"><a class="reference internal" href="../../reference/index.html">Reference</a></li> <li class="toctree-l1"><a class="reference internal" href="../../porting.html">Porting</a></li> <li class="toctree-l1"><a class="reference internal" href="../../about.html">About</a></li> <li class="toctree-l1"><a class="reference internal" href="../../releasenotes/index.html">Release Notes</a></li> <li class="toctree-l1"><a class="reference internal" href="../../deprecations.html">Deprecations and removals</a></li> </ul> </div> </div> </nav> <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"> <nav class="wy-nav-top" aria-label="top navigation"> <i data-toggle="wy-nav-top" class="fa fa-bars"></i> <a 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._binary</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._binary</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"># Binary input/output support routines.</span> <span class="c1">#</span> <span class="c1"># Copyright (c) 1997-2003 by Secret Labs AB</span> <span class="c1"># Copyright (c) 1995-2003 by Fredrik Lundh</span> <span class="c1"># Copyright (c) 2012 by Brian Crowell</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">from</span> <span class="nn">struct</span> <span class="k">import</span> <span class="n">unpack_from</span><span class="p">,</span> <span class="n">pack</span> <span class="kn">from</span> <span class="nn">._util</span> <span class="k">import</span> <span class="n">py3</span> <span class="k">if</span> <span class="n">py3</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="n">c</span> <span class="k">if</span> <span class="n">c</span><span class="o">.</span><span class="vm">__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> <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="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="nb">ord</span><span class="p">(</span><span class="n">c</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">chr</span><span class="p">(</span><span class="n">i</span> <span class="o">&</span> <span class="mi">255</span><span class="p">)</span></div> <span class="c1"># Input, le = little endian, be = big endian</span> <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="sd">"""</span> <span class="sd"> Converts a 2-bytes (16 bits) string to an unsigned integer.</span> <span class="sd"> c: string containing bytes to convert</span> <span class="sd"> o: offset of bytes to convert in string</span> <span class="sd"> """</span> <span class="k">return</span> <span class="n">unpack_from</span><span class="p">(</span><span class="s2">"<H"</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="mi">0</span><span class="p">]</span></div> <div class="viewcode-block" id="si16le"><a class="viewcode-back" href="../../PIL.html#PIL._binary.si16le">[docs]</a><span class="k">def</span> <span class="nf">si16le</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="sd">"""</span> <span class="sd"> Converts a 2-bytes (16 bits) string to a signed integer.</span> <span class="sd"> c: string containing bytes to convert</span> <span class="sd"> o: offset of bytes to convert in string</span> <span class="sd"> """</span> <span class="k">return</span> <span class="n">unpack_from</span><span class="p">(</span><span class="s2">"<h"</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="mi">0</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="sd">"""</span> <span class="sd"> Converts a 4-bytes (32 bits) string to an unsigned integer.</span> <span class="sd"> c: string containing bytes to convert</span> <span class="sd"> o: offset of bytes to convert in string</span> <span class="sd"> """</span> <span class="k">return</span> <span class="n">unpack_from</span><span class="p">(</span><span class="s2">"<I"</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="mi">0</span><span class="p">]</span></div> <div class="viewcode-block" id="si32le"><a class="viewcode-back" href="../../PIL.html#PIL._binary.si32le">[docs]</a><span class="k">def</span> <span class="nf">si32le</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="sd">"""</span> <span class="sd"> Converts a 4-bytes (32 bits) string to a signed integer.</span> <span class="sd"> c: string containing bytes to convert</span> <span class="sd"> o: offset of bytes to convert in string</span> <span class="sd"> """</span> <span class="k">return</span> <span class="n">unpack_from</span><span class="p">(</span><span class="s2">"<i"</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="mi">0</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="n">unpack_from</span><span class="p">(</span><span class="s2">">H"</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="mi">0</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="n">unpack_from</span><span class="p">(</span><span class="s2">">I"</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="mi">0</span><span class="p">]</span></div> <span class="c1"># Output, le = little endian, be = big endian</span> <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">pack</span><span class="p">(</span><span class="s2">"<H"</span><span class="p">,</span> <span class="n">i</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">pack</span><span class="p">(</span><span class="s2">"<I"</span><span class="p">,</span> <span class="n">i</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">pack</span><span class="p">(</span><span class="s2">">H"</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">pack</span><span class="p">(</span><span class="s2">">I"</span><span class="p">,</span> <span class="n">i</span><span class="p">)</span></div> </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>