<?xml version="1.0" encoding="ANSI_X3.4-1968" standalone="no"?> <!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=ANSI_X3.4-1968" /><title>Section Feed API</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /><link rel="home" href="index.html" title="LINUX MEDIA INFRASTRUCTURE API" /><link rel="up" href="dvb_kdapi.html" title="Chapter 15. Kernel Demux API" /><link rel="prev" href="ts_feed_api.html" title="TS Feed API" /><link rel="next" href="kdapi_set.html" title="set()" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Section Feed API</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ts_feed_api.html">Prev</a> </td><th width="60%" align="center">Chapter 15. Kernel Demux API</th><td width="20%" align="right"> <a accesskey="n" href="kdapi_set.html">Next</a></td></tr></table><hr /></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="section_feed_api"></a>Section Feed API</h2></div></div></div><p>A section feed is a resource consisting of a PID filter and a set of section filters. Using this API, the client can set the properties of a section feed and to start/stop filtering. The API is defined as an abstract interface of the type dmx_section_feed_t. The functions that implement the interface should be defined static or module private. The client can get the handle of a section feed API by calling the function allocate_section_feed() in the demux API. </p><p>On demux platforms that provide section filtering in hardware, the Section Feed API implementation provides a software wrapper for the demux hardware. Other platforms may support only PID filtering in hardware, requiring that TS packets are converted to sections in software. In the latter case the Section Feed API implementation can be a client of the TS Feed API. </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ts_feed_api.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="dvb_kdapi.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="kdapi_set.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">TS Feed API </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> set()</td></tr></table></div></body></html>
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