10139N/A<!DOCTYPE REFENTRY PUBLIC "-//Sun Microsystems//DTD DocBook V3.0-Based SolBook Subset V2.0//EN" [

10139N/A<!--ArborText, Inc., 1988-1999, v.4002-->

10139N/A<!ENTITY exam-tt "EXAMPLES">

10139N/A<!ENTITY cmd "wrjpgcom">

10139N/A<!ENTITY % commonents SYSTEM "smancommon.ent">

10139N/A%commonents;

10139N/A<!ENTITY % booktitles SYSTEM "booktitles.ent">

10139N/A%booktitles;

10139N/A<!ENTITY suncopy "Copyright (c) 2004, Sun Microsystems, Inc. All Rights Reserved.">

10139N/A]>

10139N/A<?Pub UDT _bookmark _target>

10139N/A<?Pub Inc>

10139N/A<refentry id="wrjpgcom-1">

10139N/A<refmeta><refentrytitle>wrjpgcom</refentrytitle><manvolnum>1</manvolnum>

10139N/A<refmiscinfo class="date">26 Mar 2004</refmiscinfo>

10139N/A<refmiscinfo class="sectdesc">&man1;</refmiscinfo>

10139N/A<refmiscinfo class="software">&release;</refmiscinfo>

10139N/A<refmiscinfo class="arch">generic</refmiscinfo>

10139N/A<refmiscinfo class="copyright">&suncopy;</refmiscinfo>

10139N/A</refmeta>

10139N/A<indexterm><primary>wrjpgcom</primary></indexterm><indexterm><primary>insert

10139N/Atext comments into a JPEG file</primary></indexterm>

10139N/A<refnamediv id="wrjpgcom-1-name"><refname>wrjpgcom</refname><refpurpose>insert

10139N/Atext comments into a JPEG file</refpurpose></refnamediv>

10139N/A<refsynopsisdiv id="wrjpgcom-1-synp"><title>&synp-tt;</title>

10139N/A<cmdsynopsis><command>&cmd;</command><arg choice="opt"><option>replace</option></arg>

10139N/A<arg choice="opt"><option>comment <replaceable>text</replaceable></option></arg>

10139N/A<arg choice="opt"><option>cfile <replaceable>name</replaceable></option></arg>

10139N/A<arg choice="opt"><option role="nodash"><replaceable>filename</replaceable></option></arg>

10139N/A</cmdsynopsis></refsynopsisdiv>

10139N/A<refsect1 id="wrjpgcom-1-desc"><title>&desc-tt;</title>

10139N/A<para><command>&cmd;</command> reads the named JPEG or JFIF file, or the standard

10139N/Ainput if no file is named, and generates a new JPEG or JFIF file on the standard

10139N/Aoutput. A comment block is added to the file.</para>

10139N/A<para>The JPEG standard allows "comment" (COM) blocks to occur within a JPEG

10139N/Afile. Although the standard does not actually define the intended function

10139N/Aof COM blocks, they are widely used to hold user-supplied text strings. This

10139N/Aenables you to add annotations, titles, index terms, and so on to your JPEG

10139N/Afiles, and later retrieve the COM blocks as text. COM blocks do not interfere

10139N/Awith the image stored in the JPEG file. The maximum size of a COM block is

10139N/A64K, but you can have many COM blocks in one JPEG file.</para>

10139N/A<para><command>&cmd;</command> adds a COM block, containing text that you

10139N/Aprovide, to a JPEG file. Ordinarily, the COM block is added after any existing

10139N/ACOM blocks, but you can delete the old COM blocks if you wish.</para>

10139N/A</refsect1>

10139N/A<refsect1 id="wrjpgcom-1-opts"><title>&opts-tt;</title>

10139N/A<para>The following options are supported:</para>

10139N/A<variablelist termlength="narrow">

10139N/A<varlistentry><term><option>cfile <replaceable>name</replaceable></option></term>

10139N/A<listitem><para>Read the text for a new COM block from the named file.</para>

10139N/A</listitem></varlistentry>

10139N/A<varlistentry><term><option>comment <replaceable>text</replaceable></option></term>

10139N/A<listitem><para>Supply the text for a new COM block on the command line.</para>

10139N/A</listitem></varlistentry>

10139N/A<varlistentry><term><option>replace</option></term><listitem><para>Delete

10139N/Aany existing COM blocks from the file.</para>

10139N/A</listitem></varlistentry>

10139N/A</variablelist></refsect1>

10139N/A<refsect1 id="wrjpgcom-1-oper"><title>&oper-tt;</title>

10139N/A<para>The following operands are supported:</para>

10139N/A<variablelist termlength="narrow">

10139N/A<varlistentry><term><option role="nodash"><replaceable>filename</replaceable></option></term>

10139N/A<listitem><para>The name of the JPEG file to which you want to add text comments.

10139N/A</para>

10139N/A</listitem></varlistentry>

10139N/A</variablelist></refsect1>

10139N/A<refsect1 id="wrjpgcom-1-exde"><title>&exde-tt;</title>

10139N/A<para>To add only one line of comment text, use the <option>comment</option>

10139N/Aoption to provide the text on the command line. Specify the comment text within

10139N/Aquotes, so that the text is treated as a single argument. Longer comments

10139N/Acan be read from a text file.</para>

10139N/A<para>If you specify neither the <option>comment</option> nor the <option>

10139N/Acfile</option> option, <command>&cmd;</command> reads the comment text from

10139N/Astandard input. In such cases, you must supply an input image filename. You

10139N/Acan enter multiple lines, up to 64KB. Type an end-of-file indicator, usually

10139N/ACtrl-D, to terminate the comment text entry.</para>

10139N/A<para><command>&cmd;</command> does not add a COM block if the provided comment

10139N/Astring is empty. Therefore, you can use <option>replace</option> <option>

10139N/Acomment ""</option> to delete all COM blocks from a file.</para>

10139N/A</refsect1>

10139N/A<refsect1 id="wrjpgcom-1-exam"><title>&exam-tt;</title>

10139N/A<example role="example">

10139N/A<title>Adding a Short Comment to in.jpg to Produce out.jpg</title>

10139N/A<para><screen>example% <userinput>&cmd; -c "View of my back yard" in.jpg > out.jpg

10139N/A</userinput></screen></para>

10139N/A</example>

10139N/A<example role="example">

10139N/A<title>Attaching a Long Comment Previously Stored in comment.txt</title>

10139N/A<para><screen>example% <userinput>&cmd; in.jpg &lt; comment.txt > out.jpg

10139N/A</userinput></screen></para>

10139N/A<para>or</para>

11904N/A<para><screen>example% <userinput>&cmd; -cfile comment.txt &lt; in.jpg > out.jpg

10139N/A</userinput></screen></para>

10139N/A<para>In this example, 1000 is a number that is larger than the number of

10139N/Arows in the source file.</para>

10139N/A</example>

10139N/A</refsect1>

10139N/A<refsect1 id="wrjpgcom-1-attr"><title>&attr-tt;</title>

10139N/A<para>See <olink targetdocent="REFMAN5" localinfo="attributes-5"><citerefentry>

10139N/A<refentrytitle>attributes</refentrytitle><manvolnum>5</manvolnum></citerefentry></olink>

10139N/Afor descriptions of the following attributes:</para>

10139N/A<informaltable frame="all">

10139N/A<tgroup cols="2" colsep="1" rowsep="1"><colspec colname="COLSPEC0" colwidth="1*">

10139N/A<colspec colname="COLSPEC1" colwidth="1*">

10139N/A<thead>

10139N/A<row><entry align="center" valign="middle">ATTRIBUTE TYPE</entry><entry align="center"

10139N/Avalign="middle">ATTRIBUTE VALUE</entry></row>

10139N/A</thead>

10139N/A<tbody>

18745N/A<row><entry><para>Availability</para></entry><entry><para>image/library/libjpeg</para></entry>

10139N/A</row>

10139N/A<row><entry colname="COLSPEC0"><para>Interface stability</para></entry><entry

10139N/Acolname="COLSPEC1"><para>Volatile</para></entry></row>

10139N/A</tbody>

10139N/A</tgroup>

10139N/A</informaltable>

10139N/A</refsect1>

10139N/A<refsect1 id="wrjpgcom-1-also"><title>&also-tt;</title>

10139N/A<para><citerefentry><refentrytitle>cjpeg</refentrytitle><manvolnum>1</manvolnum>

10139N/A</citerefentry>, <citerefentry><refentrytitle>djpeg</refentrytitle><manvolnum>

10139N/A1</manvolnum></citerefentry>, <citerefentry><refentrytitle>jpegtran</refentrytitle>

10139N/A<manvolnum>1</manvolnum></citerefentry>, <citerefentry><refentrytitle>rdjpgcom

10139N/A</refentrytitle><manvolnum>1</manvolnum></citerefentry></para>

10139N/A</refsect1>

10139N/A<refsect1 id="wrjpgcom-1-note"><title>&note-tt;</title>

10139N/A<para>This man page was originally written by the Independent JPEG Group.

10139N/AUpdated by Breda McColgan, Sun Microsystems Inc., 2004. </para>

10139N/A</refsect1>

10139N/A</refentry>