<?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>Appendix A. Function Reference</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="LINUX MEDIA INFRASTRUCTURE API" /><link rel="up" href="pt01.html" title="Part I. Video for Linux Two API Specification" /><link rel="prev" href="ch07s05.html" title="Obsolete API Elements" /><link rel="next" href="re20.html" title="V4L2 close()" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix A. Function Reference</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch07s05.html">Prev</a> </td><th width="60%" align="center">Part I. Video for Linux Two API Specification</th><td width="20%" align="right"> <a accesskey="n" href="re20.html">Next</a></td></tr></table><hr /></div><div class="appendix" title="Appendix A. Function Reference"><div class="titlepage"><div><div><h2 class="title"><a id="user-func"></a>Appendix A. Function Reference</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="refentrytitle"><a href="re20.html">V4L2 close()</a></span><span class="refpurpose"> — Close a V4L2 device</span></dt><dt><span class="refentrytitle"><a href="re21.html">V4L2 ioctl()</a></span><span class="refpurpose"> — Program a V4L2 device</span></dt><dt><span class="refentrytitle"><a href="re22.html">ioctl VIDIOC_CROPCAP</a></span><span class="refpurpose"> — Information about the video cropping and scaling abilities</span></dt><dt><span class="refentrytitle"><a href="re23.html">ioctl VIDIOC_DBG_G_CHIP_IDENT</a></span><span class="refpurpose"> — Identify the chips on a TV card</span></dt><dt><span class="refentrytitle"><a href="re24.html">ioctl VIDIOC_DBG_G_REGISTER, VIDIOC_DBG_S_REGISTER</a></span><span class="refpurpose"> — Read or write hardware registers</span></dt><dt><span class="refentrytitle"><a href="re25.html">ioctl VIDIOC_ENCODER_CMD, VIDIOC_TRY_ENCODER_CMD</a></span><span class="refpurpose"> — Execute an encoder command</span></dt><dt><span class="refentrytitle"><a href="re26.html">ioctl VIDIOC_ENUMAUDIO</a></span><span class="refpurpose"> — Enumerate audio inputs</span></dt><dt><span class="refentrytitle"><a href="re27.html">ioctl VIDIOC_ENUMAUDOUT</a></span><span class="refpurpose"> — Enumerate audio outputs</span></dt><dt><span class="refentrytitle"><a href="re28.html">ioctl VIDIOC_ENUM_FMT</a></span><span class="refpurpose"> — Enumerate image formats</span></dt><dt><span class="refentrytitle"><a href="re29.html">ioctl VIDIOC_ENUM_FRAMESIZES</a></span><span class="refpurpose"> — Enumerate frame sizes</span></dt><dt><span class="refentrytitle"><a href="re30.html">ioctl VIDIOC_ENUM_FRAMEINTERVALS</a></span><span class="refpurpose"> — Enumerate frame intervals</span></dt><dt><span class="refentrytitle"><a href="re31.html">ioctl VIDIOC_ENUMINPUT</a></span><span class="refpurpose"> — Enumerate video inputs</span></dt><dt><span class="refentrytitle"><a href="re32.html">ioctl VIDIOC_ENUMOUTPUT</a></span><span class="refpurpose"> — Enumerate video outputs</span></dt><dt><span class="refentrytitle"><a href="re33.html">ioctl VIDIOC_ENUMSTD</a></span><span class="refpurpose"> — Enumerate supported video standards</span></dt><dt><span class="refentrytitle"><a href="re34.html">ioctl VIDIOC_G_AUDIO, VIDIOC_S_AUDIO</a></span><span class="refpurpose"> — Query or select the current audio input and its attributes</span></dt><dt><span class="refentrytitle"><a href="re35.html">ioctl VIDIOC_G_AUDOUT, VIDIOC_S_AUDOUT</a></span><span class="refpurpose"> — Query or select the current audio output</span></dt><dt><span class="refentrytitle"><a href="re36.html">ioctl VIDIOC_G_CROP, VIDIOC_S_CROP</a></span><span class="refpurpose"> — Get or set the current cropping rectangle</span></dt><dt><span class="refentrytitle"><a href="re37.html">ioctl VIDIOC_G_CTRL, VIDIOC_S_CTRL</a></span><span class="refpurpose"> — Get or set the value of a control</span></dt><dt><span class="refentrytitle"><a href="re38.html">ioctl VIDIOC_G_ENC_INDEX</a></span><span class="refpurpose"> — Get meta data about a compressed video stream</span></dt><dt><span class="refentrytitle"><a href="re39.html">ioctl VIDIOC_G_EXT_CTRLS, VIDIOC_S_EXT_CTRLS, VIDIOC_TRY_EXT_CTRLS</a></span><span class="refpurpose"> — Get or set the value of several controls, try control values</span></dt><dt><span class="refentrytitle"><a href="re40.html">ioctl VIDIOC_G_FBUF, VIDIOC_S_FBUF</a></span><span class="refpurpose"> — Get or set frame buffer overlay parameters</span></dt><dt><span class="refentrytitle"><a href="re41.html">ioctl VIDIOC_G_FMT, VIDIOC_S_FMT, VIDIOC_TRY_FMT</a></span><span class="refpurpose"> — Get or set the data format, try a format</span></dt><dt><span class="refentrytitle"><a href="re42.html">ioctl VIDIOC_G_FREQUENCY, VIDIOC_S_FREQUENCY</a></span><span class="refpurpose"> — Get or set tuner or modulator radio frequency</span></dt><dt><span class="refentrytitle"><a href="re43.html">ioctl VIDIOC_G_INPUT, VIDIOC_S_INPUT</a></span><span class="refpurpose"> — Query or select the current video input</span></dt><dt><span class="refentrytitle"><a href="re44.html">ioctl VIDIOC_G_JPEGCOMP, VIDIOC_S_JPEGCOMP</a></span><span class="refpurpose"></span></dt><dt><span class="refentrytitle"><a href="re45.html">ioctl VIDIOC_G_MODULATOR, VIDIOC_S_MODULATOR</a></span><span class="refpurpose"> — Get or set modulator attributes</span></dt><dt><span class="refentrytitle"><a href="re46.html">ioctl VIDIOC_G_OUTPUT, VIDIOC_S_OUTPUT</a></span><span class="refpurpose"> — Query or select the current video output</span></dt><dt><span class="refentrytitle"><a href="re47.html">ioctl VIDIOC_G_PARM, VIDIOC_S_PARM</a></span><span class="refpurpose"> — Get or set streaming parameters</span></dt><dt><span class="refentrytitle"><a href="re48.html">ioctl VIDIOC_G_PRIORITY, VIDIOC_S_PRIORITY</a></span><span class="refpurpose"> — Query or request the access priority associated with a file descriptor</span></dt><dt><span class="refentrytitle"><a href="re49.html">ioctl VIDIOC_G_SLICED_VBI_CAP</a></span><span class="refpurpose"> — Query sliced VBI capabilities</span></dt><dt><span class="refentrytitle"><a href="re50.html">ioctl VIDIOC_G_STD, VIDIOC_S_STD</a></span><span class="refpurpose"> — Query or select the video standard of the current input</span></dt><dt><span class="refentrytitle"><a href="re51.html">ioctl VIDIOC_G_TUNER, VIDIOC_S_TUNER</a></span><span class="refpurpose"> — Get or set tuner attributes</span></dt><dt><span class="refentrytitle"><a href="re52.html">ioctl VIDIOC_LOG_STATUS</a></span><span class="refpurpose"> — Log driver status information</span></dt><dt><span class="refentrytitle"><a href="re53.html">ioctl VIDIOC_OVERLAY</a></span><span class="refpurpose"> — Start or stop video overlay</span></dt><dt><span class="refentrytitle"><a href="re54.html">ioctl VIDIOC_QBUF, VIDIOC_DQBUF</a></span><span class="refpurpose"> — Exchange a buffer with the driver</span></dt><dt><span class="refentrytitle"><a href="re55.html">ioctl VIDIOC_QUERYBUF</a></span><span class="refpurpose"> — Query the status of a buffer</span></dt><dt><span class="refentrytitle"><a href="re56.html">ioctl VIDIOC_QUERYCAP</a></span><span class="refpurpose"> — Query device capabilities</span></dt><dt><span class="refentrytitle"><a href="re57.html">ioctl VIDIOC_QUERYCTRL, VIDIOC_QUERYMENU</a></span><span class="refpurpose"> — Enumerate controls and menu control items</span></dt><dt><span class="refentrytitle"><a href="re58.html">ioctl VIDIOC_QUERYSTD</a></span><span class="refpurpose"> — Sense the video standard received by the current input</span></dt><dt><span class="refentrytitle"><a href="re59.html">ioctl VIDIOC_REQBUFS</a></span><span class="refpurpose"> — Initiate Memory Mapping or User Pointer I/O</span></dt><dt><span class="refentrytitle"><a href="re60.html">ioctl VIDIOC_S_HW_FREQ_SEEK</a></span><span class="refpurpose"> — Perform a hardware frequency seek</span></dt><dt><span class="refentrytitle"><a href="re61.html">ioctl VIDIOC_STREAMON, VIDIOC_STREAMOFF</a></span><span class="refpurpose"> — Start or stop streaming I/O</span></dt><dt><span class="refentrytitle"><a href="re62.html">V4L2 mmap()</a></span><span class="refpurpose"> — Map device memory into application address space</span></dt><dt><span class="refentrytitle"><a href="re63.html">V4L2 munmap()</a></span><span class="refpurpose"> — Unmap device memory</span></dt><dt><span class="refentrytitle"><a href="re64.html">V4L2 open()</a></span><span class="refpurpose"> — Open a V4L2 device</span></dt><dt><span class="refentrytitle"><a href="re65.html">V4L2 poll()</a></span><span class="refpurpose"> — Wait for some event on a file descriptor</span></dt><dt><span class="refentrytitle"><a href="re66.html">V4L2 read()</a></span><span class="refpurpose"> — Read from a V4L2 device</span></dt><dt><span class="refentrytitle"><a href="re67.html">V4L2 select()</a></span><span class="refpurpose"> — Synchronous I/O multiplexing</span></dt><dt><span class="refentrytitle"><a href="re68.html">V4L2 write()</a></span><span class="refpurpose"> — Write to a V4L2 device</span></dt></dl></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ch07s05.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="pt01.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re20.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Obsolete API Elements </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> V4L2 close()</td></tr></table></div></body></html>
