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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>The Be Book - System Overview - The Media Kit</title><link rel="stylesheet" href="be_book.css" type="text/css" media="all" /><link rel="shortcut icon" type="image/vnd.microsoft.icon" href="./images/favicon.ico" /><!--[if IE]>
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<![endif]--><meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /><meta name="keywords" content="Access, BeOS, BeBook, API" /><link rel="start" href="index.html" title="The Be Book" /><link rel="up" href="TheMediaKit_Overview.html" title="The Media Kit" /><link rel="prev" href="BDiscreteParameter_Overview.html" title="BDiscreteParameter" /><link rel="next" href="BMediaAddOn_Overview.html" title="BMediaAddOn" /></head><body><div id="header"><div id="headerT"><div id="headerTL"><a accesskey="p" href="BDiscreteParameter_Overview.html" title="BDiscreteParameter"><img src="./images/navigation/prev.png" alt="Prev" /></a> <a accesskey="u" href="TheMediaKit_Overview.html" title="The Media Kit"><img src="./images/navigation/up.png" alt="Up" /></a> <a accesskey="n" href="BMediaAddOn_Overview.html" title="BMediaAddOn"><img src="./images/navigation/next.png" alt="Next" /></a></div><div id="headerTR"><div id="navigpeople"><a href="http://www.haiku-os.org"><img src="./images/People_24.png" alt="haiku-os.org" title="Visit The Haiku Website" /></a></div><div class="navighome" title="Home"><a accesskey="h" href="index.html"><img src="./images/navigation/home.png" alt="Home" /></a></div><div class="navigboxed" id="navigindex"><a accesskey="i" href="ClassIndex.html" title="Index">I</a></div><div class="navigboxed" id="naviglang" title="English">en</div></div><div id="headerTC">The Be Book - System Overview - The Media Kit</div></div><div id="headerB">Prev: <a href="BDiscreteParameter_Overview.html">BDiscreteParameter</a>  Up: <a href="TheMediaKit_Overview.html">The Media Kit</a>  Next: <a href="BMediaAddOn_Overview.html">BMediaAddOn</a></div><hr /></div><div class="section"><div xmlns="" xmlns:d="http://docbook.org/ns/docbook" class="titlepage"><div><div xmlns:d="http://docbook.org/ns/docbook"><h2 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="BFileInterface_Overview"></a>BFileInterface</h2></div></div></div><a id="id584981" class="indexterm"></a><p>A node that can read data from, or write data to, a disk file should
derive from
<a class="link" href="BFileInterface.html" title="BFileInterface"><code class="classname">BFileInterface</code></a>
in order to allow applications to easily
specify what file the node should work with. The node will then be called
upon by the Media Server to try to identify, and possibly work with,
unknown files.</p><p>Your node can't just derive from
<a class="link" href="BFileInterface.html" title="BFileInterface"><code class="classname">BFileInterface</code></a>;
it must also derive from at least one of
<a class="link" href="BBufferConsumer.html" title="BBufferConsumer"><code class="classname">BBufferConsumer</code></a> and
<a class="link" href="BBufferProducer.html" title="BBufferProducer"><code class="classname">BBufferProducer</code></a>,
depending on its needs.</p></div><div id="footer"><hr /><div id="footerT">Prev: <a href="BDiscreteParameter_Overview.html">BDiscreteParameter</a>  Up: <a href="TheMediaKit_Overview.html">The Media Kit</a>  Next: <a href="BMediaAddOn_Overview.html">BMediaAddOn</a> </div><div id="footerB"><div id="footerBL"><a href="BDiscreteParameter_Overview.html" title="BDiscreteParameter"><img src="./images/navigation/prev.png" alt="Prev" /></a> <a href="TheMediaKit_Overview.html" title="The Media Kit"><img src="./images/navigation/up.png" alt="Up" /></a> <a href="BMediaAddOn_Overview.html" title="BMediaAddOn"><img src="./images/navigation/next.png" alt="Next" /></a></div><div id="footerBR"><div><a href="http://www.haiku-os.org"><img src="./images/People_24.png" alt="haiku-os.org" title="Visit The Haiku Website" /></a></div><div class="navighome" title="Home"><a accesskey="h" href="index.html"><img src="./images/navigation/home.png" alt="Home" /></a></div></div><div id="footerBC"><a href="http://www.access-company.com/home.html" title="ACCESS Co."><img alt="Access Company" src="./images/access_logo.png" /></a></div></div></div><div id="licenseFooter"><div id="licenseFooterBL"><a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/" title="Creative Commons License"><img alt="Creative Commons License" style="border-width:0" src="https://licensebuttons.net/l/by-nc-nd/3.0/88x31.png" /></a></div><div id="licenseFooterBR"><a href="./LegalNotice.html">Legal Notice</a></div><div id="licenseFooterBC"><span id="licenseText">This work is licensed under a
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