<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"> <HTML ><HEAD ><TITLE >via_chan_set_stereo</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="Via 686 Audio Driver for Linux" HREF="book1.html"><LINK REL="UP" TITLE="Internal Functions" HREF="c211.html"><LINK REL="PREVIOUS" TITLE="via_chan_set_fmt" HREF="r649.html"><LINK REL="NEXT" TITLE="via_chan_dump_bufs" HREF="r740.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Via 686 Audio Driver for Linux</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="r649.html" ACCESSKEY="P" ><<< Previous</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="r740.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="AEN694" ></A ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >via_chan_set_stereo</SPAN ></SPAN ></H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN698" ></A ><H2 >Name</H2 >via_chan_set_stereo -- Enable or disable stereo for a DMA channel </DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN701" ></A ><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A NAME="AEN703" ></A ><P ></P ><P ><CODE ><CODE CLASS="FUNCDEF" >int <TT CLASS="FUNCTION" >via_chan_set_stereo </TT ></CODE >(struct via_info * <TT CLASS="PARAMETER" ><I >card</I ></TT >, struct via_channel * <TT CLASS="PARAMETER" ><I >chan</I ></TT >, int <TT CLASS="PARAMETER" ><I >val</I ></TT >);</CODE ></P ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN713" ></A ><H2 >Arguments</H2 ><P ></P ><DIV CLASS="VARIABLELIST" ><DL ><DT ><TT CLASS="PARAMETER" ><I >card</I ></TT ></DT ><DD ><P > Private info for specified board </P ></DD ><DT ><TT CLASS="PARAMETER" ><I >chan</I ></TT ></DT ><DD ><P > Channel whose stereo setting will be adjusted </P ></DD ><DT ><TT CLASS="PARAMETER" ><I >val</I ></TT ></DT ><DD ><P > New sample size, use the <TT CLASS="CONSTANT" >AFMT_xxx</TT > constants </P ></DD ></DL ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN732" ></A ><H2 >Description</H2 ><P > Helper function for the <TT CLASS="CONSTANT" >SNDCTL_DSP_CHANNELS</TT > and <TT CLASS="CONSTANT" >SNDCTL_DSP_STEREO</TT > ioctls. OSS semantics demand that all audio operations halt (if they are not already halted) when <TT CLASS="CONSTANT" >SNDCTL_DSP_CHANNELS</TT > or SNDCTL_DSP_STEREO is given. </P ><P > This function halts all audio operations for the given channel <TT CLASS="PARAMETER" ><I >chan</I ></TT >, and then calls via_chan_pcm_fmt to set the audio hardware to enable or disable stereo. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="r649.html" ACCESSKEY="P" ><<< Previous</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="book1.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="r740.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >via_chan_set_fmt</SPAN ></SPAN ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="c211.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >via_chan_dump_bufs</SPAN ></SPAN ></TD ></TR ></TABLE ></DIV ></BODY ></HTML >