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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>raw1394_get_port_info</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
TITLE="libraw1394"
HREF="index.html"><LINK
REL="UP"
TITLE="Function Reference"
HREF="c232.html"><LINK
REL="PREVIOUS"
TITLE="raw1394_get_nodecount"
HREF="r1325.html"><LINK
REL="NEXT"
TITLE="raw1394_set_port"
HREF="r1417.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"
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><TR
><TH
COLSPAN="3"
ALIGN="center"
>libraw1394: version 2.0.4</TH
></TR
><TR
><TD
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ALIGN="left"
VALIGN="bottom"
><A
HREF="r1325.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
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><A
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>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><H1
><A
NAME="API-raw1394-get-port-info"
></A
><SPAN
CLASS="phrase"
><SPAN
CLASS="phrase"
>raw1394_get_port_info</SPAN
></SPAN
></H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN1370"
></A
><H2
>Name</H2
>raw1394_get_port_info&nbsp;--&nbsp;
     get information about available ports
 </DIV
><DIV
CLASS="refsynopsisdiv"
><A
NAME="AEN1373"
></A
><H2
>Synopsis</H2
><DIV
CLASS="funcsynopsis"
><P
></P
><A
NAME="AEN1375"
></A
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int raw1394_get_port_info </CODE
>(raw1394handle_t handle, struct raw1394_portinfo * pinf, int maxports);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN1385"
></A
><H2
>Arguments</H2
><P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>handle</CODE
></DT
><DD
><P
>&#13;     libraw1394 handle
    </P
></DD
><DT
><CODE
CLASS="parameter"
>pinf</CODE
></DT
><DD
><P
>&#13;     pointer to an array of struct raw1394_portinfo
    </P
></DD
><DT
><CODE
CLASS="parameter"
>maxports</CODE
></DT
><DD
><P
>&#13;     number of elements in <CODE
CLASS="parameter"
>pinf</CODE
>
    </P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN1404"
></A
><H2
>Description</H2
><P
>&#13;   Before you can set which port to use, you have to use this function to find
   out which ports exist.
   </P
><P
>&#13;
   If your program is interactive, you should present the user with this list to
   let them decide which port to use if there is more than one.  A
   non-interactive program (and probably interactive ones, too) should provide a
   command line option to choose the port. If <CODE
CLASS="parameter"
>maxports</CODE
> is <CODE
CLASS="constant"
>0</CODE
>, <CODE
CLASS="parameter"
>pinf</CODE
> can be
   <CODE
CLASS="constant"
>NULL</CODE
>, too.
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN1412"
></A
><H2
>Returns</H2
><P
>&#13;   the number of ports and writes information about them into <CODE
CLASS="parameter"
>pinf</CODE
>, but
   not into more than <CODE
CLASS="parameter"
>maxports</CODE
> elements.
</P
></DIV
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><HR
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><TR
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><SPAN
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><SPAN
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>raw1394_get_nodecount</SPAN
></SPAN
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CLASS="phrase"
>raw1394_set_port</SPAN
></SPAN
></TD
></TR
></TABLE
></DIV
></BODY
></HTML
>