glfs/general/graphlib/libjpeg/libjpeg-desc.xml

<sect2>
<title>Contents</title>

<para>The libjpeg package contains <command>cjpeg</command>,
<command>djpeg</command>, <command>jpegtran</command>,
<command>rdjpgcom</command>, <command>wrjpgcom</command> and
<filename>libjpeg</filename> libraries.</para>

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<sect2><title>Description</title>

<sect3><title>cjpeg</title>
<para><command>cjpeg</command> compresses image files to produce a
<acronym>JPEG</acronym>/<acronym>JFIF</acronym> file on the standard
output.  Currently supported input file formats are:
<acronym>PPM</acronym> (PBMPLUS color
format), <acronym>PGM</acronym> (PBMPLUS gray-scale
format), <acronym>BMP</acronym>, and Targa.</para></sect3>

<sect3><title>djpeg</title>
<para><command>djpeg</command> decompresses image files from
<acronym>JPEG/JFIF</acronym> format to either <acronym>PPM</acronym> 
(PBMPLUS color format), <acronym>PGM</acronym> (PBMPLUS gray-scale
format), <acronym>BMP</acronym>, or Targa
format.</para></sect3>

<sect3><title>jpegtran</title>
<para><command>jpegtran</command> is used for lossless transformation of
<acronym>JPEG</acronym> files.</para></sect3>

<sect3><title>rdjpgcom</title>
<para><command>rdjpgcom</command> displays text comments from within a
<acronym>JPEG</acronym> file.</para></sect3>

<sect3><title>wrjpgcom</title>
<para><command>wrjpgcom</command> inserts text comments into a
<acronym>JPEG</acronym> file.</para></sect3>

<sect3><title>jpeg libraries</title>
<para>These libraries are used by many programs for reading and writing
jpeg format files.</para></sect3>

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