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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>Exiv2: Exiv2::CiffHeader Class Reference</title>
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<a class="el" href="namespaceExiv2.html">Exiv2</a>::<a class="el" href="classExiv2_1_1CiffHeader.html">CiffHeader</a></div>
<h1>Exiv2::CiffHeader Class Reference</h1><!-- doxytag: class="Exiv2::CiffHeader" -->This class models the header of a Crw (Canon Raw data) image. It is the head of a CIFF parse tree, consisting of <a class="el" href="classExiv2_1_1CiffDirectory.html">CiffDirectory</a> and <a class="el" href="classExiv2_1_1CiffEntry.html">CiffEntry</a> objects. Most of its methods will walk the parse tree to perform the requested action.
<a href="#_details">More...</a>
<p>
<code>#include <crwimage.hpp></code>
<p>
Collaboration diagram for Exiv2::CiffHeader:<p><center><img src="classExiv2_1_1CiffHeader__coll__graph.png" border="0" usemap="#Exiv2_1_1CiffHeader__coll__map" alt="Collaboration graph"></center>
<map name="Exiv2_1_1CiffHeader__coll__map">
<area href="classExiv2_1_1CiffDirectory.html" shape="rect" coords="14,84,150,108" alt="">
<area href="classExiv2_1_1CiffComponent.html" shape="rect" coords="6,7,158,31" alt="">
</map>
<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="classExiv2_1_1CiffHeader-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Types</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e38af44f405d657e98378d54aaa4b8bb"></a><!-- doxytag: member="Exiv2::CiffHeader::AutoPtr" ref="e38af44f405d657e98378d54aaa4b8bb" args="" -->
typedef std::auto_ptr< <a class="el" href="classExiv2_1_1CiffHeader.html">CiffHeader</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1CiffHeader.html#e38af44f405d657e98378d54aaa4b8bb">AutoPtr</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight"><a class="el" href="classExiv2_1_1CiffHeader.html">CiffHeader</a> auto_ptr type. <br></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td colspan="2"><div class="groupHeader">Creators</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="d43a1c584f81093e95dfb827500c9caf"></a><!-- doxytag: member="Exiv2::CiffHeader::CiffHeader" ref="d43a1c584f81093e95dfb827500c9caf" args="()" -->
</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1CiffHeader.html#d43a1c584f81093e95dfb827500c9caf">CiffHeader</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Default constructor. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="bb5f50c789d57b47dace237febeb8b64"></a><!-- doxytag: member="Exiv2::CiffHeader::~CiffHeader" ref="bb5f50c789d57b47dace237febeb8b64" args="()" -->
virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1CiffHeader.html#bb5f50c789d57b47dace237febeb8b64">~CiffHeader</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Virtual destructor. <br></td></tr>
<tr><td colspan="2"><div class="groupHeader">Manipulators</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1CiffHeader.html#d5601fd0024c3d91d25486a3877d8fa2">read</a> (const <a class="el" href="namespaceExiv2.html#16f60a5bd4207fe155f6cf93a15efa72">byte</a> *pData, uint32_t size)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Read the Crw image from a data buffer, starting with the Ciff header. <a href="#d5601fd0024c3d91d25486a3877d8fa2"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1CiffHeader.html#37a3faad6fb11f5e851e243fcdcce35b">add</a> (uint16_t crwTagId, uint16_t crwDir, <a class="el" href="classExiv2_1_1DataBuf.html">DataBuf</a> buf)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Set the value of entry <em>crwTagId</em> in directory <em>crwDir</em> to <em>buf</em>. If this tag doesn't exist, it is added along with all directories needed. <a href="#37a3faad6fb11f5e851e243fcdcce35b"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1CiffHeader.html#df8b6992c401ceaec304176289e95af7">remove</a> (uint16_t crwTagId, uint16_t crwDir)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Remove entry <em>crwTagId</em> in directory <em>crwDir</em> from the parse tree. If it's the last entry in the directory, the directory is removed as well, etc. <a href="#df8b6992c401ceaec304176289e95af7"></a><br></td></tr>
<tr><td colspan="2"><div class="groupHeader">Accessors</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1CiffHeader.html#0708d4c36aac75709054afd1cb8cad5a">write</a> (<a class="el" href="namespaceExiv2.html#6e7b9a2ef47caec919b15f1ae6ff4872">Blob</a> &blob) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Write the Crw image to the binary image <em>blob</em>, starting with the Ciff header. This method appends to the blob. <a href="#0708d4c36aac75709054afd1cb8cad5a"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1CiffHeader.html#98764fd1b90132375144cba10a7d7d75">decode</a> (<a class="el" href="classExiv2_1_1Image.html">Image</a> &image) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Decode the Crw image and add it to <em>image</em>. <a href="#98764fd1b90132375144cba10a7d7d75"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1CiffHeader.html#9729b73a3420cd7754cc58d7ad184f76">print</a> (std::ostream &os, const std::string &prefix="") const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Print debug info for the Crw image to <em>os</em>. <a href="#9729b73a3420cd7754cc58d7ad184f76"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="f1134888f9bf0f1d1360011ab57b6d6f"></a><!-- doxytag: member="Exiv2::CiffHeader::byteOrder" ref="f1134888f9bf0f1d1360011ab57b6d6f" args="() const " -->
<a class="el" href="namespaceExiv2.html#94c225faf6d6c611a3828fae1c28efa6">ByteOrder</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1CiffHeader.html#f1134888f9bf0f1d1360011ab57b6d6f">byteOrder</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the byte order (little or big endian). <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="208d02df3ba5af2a381d8b7df2dd04d3"></a><!-- doxytag: member="Exiv2::CiffHeader::findComponent" ref="208d02df3ba5af2a381d8b7df2dd04d3" args="(uint16_t crwTagId, uint16_t crwDir) const " -->
<a class="el" href="classExiv2_1_1CiffComponent.html">CiffComponent</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1CiffHeader.html#208d02df3ba5af2a381d8b7df2dd04d3">findComponent</a> (uint16_t crwTagId, uint16_t crwDir) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Finds <em>crwTagId</em> in directory <em>crwDir</em>, returning a pointer to the component or 0 if not found. <br></td></tr>
<tr><td colspan="2"><br><h2>Static Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="95b2101194d717f303304c86f9baa195"></a><!-- doxytag: member="Exiv2::CiffHeader::signature" ref="95b2101194d717f303304c86f9baa195" args="()" -->
static const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1CiffHeader.html#95b2101194d717f303304c86f9baa195">signature</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return a pointer to the Canon Crw signature. <br></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
This class models the header of a Crw (Canon Raw data) image. It is the head of a CIFF parse tree, consisting of <a class="el" href="classExiv2_1_1CiffDirectory.html">CiffDirectory</a> and <a class="el" href="classExiv2_1_1CiffEntry.html">CiffEntry</a> objects. Most of its methods will walk the parse tree to perform the requested action.
<p>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="37a3faad6fb11f5e851e243fcdcce35b"></a><!-- doxytag: member="Exiv2::CiffHeader::add" ref="37a3faad6fb11f5e851e243fcdcce35b" args="(uint16_t crwTagId, uint16_t crwDir, DataBuf buf)" --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">void Exiv2::CiffHeader::add </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">uint16_t </td>
<td class="mdname" nowrap> <em>crwTagId</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>uint16_t </td>
<td class="mdname" nowrap> <em>crwDir</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="classExiv2_1_1DataBuf.html">DataBuf</a> </td>
<td class="mdname" nowrap> <em>buf</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Set the value of entry <em>crwTagId</em> in directory <em>crwDir</em> to <em>buf</em>. If this tag doesn't exist, it is added along with all directories needed.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>crwTagId</em> </td><td><a class="el" href="namespaceExiv2_1_1Tag.html">Tag</a> to be added. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>crwDir</em> </td><td>Parent directory of the tag. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>buf</em> </td><td><a class="el" href="classExiv2_1_1Value.html">Value</a> to be set. </td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a class="anchor" name="98764fd1b90132375144cba10a7d7d75"></a><!-- doxytag: member="Exiv2::CiffHeader::decode" ref="98764fd1b90132375144cba10a7d7d75" args="(Image &image) const " --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">void Exiv2::CiffHeader::decode </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classExiv2_1_1Image.html">Image</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>image</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Decode the Crw image and add it to <em>image</em>.
<p>
Walk the parse tree and convert CIFF entries to metadata entries which are added to <em>image</em>.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>image</em> </td><td><a class="el" href="classExiv2_1_1Image.html">Image</a> to add metadata to </td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a class="anchor" name="9729b73a3420cd7754cc58d7ad184f76"></a><!-- doxytag: member="Exiv2::CiffHeader::print" ref="9729b73a3420cd7754cc58d7ad184f76" args="(std::ostream &os, const std::string &prefix="") const " --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">void Exiv2::CiffHeader::print </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">std::ostream & </td>
<td class="mdname" nowrap> <em>os</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>const std::string & </td>
<td class="mdname" nowrap> <em>prefix</em> = <code>""</code></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"> const</td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Print debug info for the Crw image to <em>os</em>.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>os</em> </td><td>Output stream to write to. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>prefix</em> </td><td>Prefix to be written before each line of output. </td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a class="anchor" name="d5601fd0024c3d91d25486a3877d8fa2"></a><!-- doxytag: member="Exiv2::CiffHeader::read" ref="d5601fd0024c3d91d25486a3877d8fa2" args="(const byte *pData, uint32_t size)" --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">void Exiv2::CiffHeader::read </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const <a class="el" href="namespaceExiv2.html#16f60a5bd4207fe155f6cf93a15efa72">byte</a> * </td>
<td class="mdname" nowrap> <em>pData</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>uint32_t </td>
<td class="mdname" nowrap> <em>size</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Read the Crw image from a data buffer, starting with the Ciff header.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>pData</em> </td><td>Pointer to the data buffer. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>size</em> </td><td>Number of bytes in the data buffer.</td></tr>
</table>
</dl>
<dl compact><dt><b>Exceptions:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em><a class="el" href="classExiv2_1_1Error.html">Error</a></em> </td><td>If the image cannot be parsed. </td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a class="anchor" name="df8b6992c401ceaec304176289e95af7"></a><!-- doxytag: member="Exiv2::CiffHeader::remove" ref="df8b6992c401ceaec304176289e95af7" args="(uint16_t crwTagId, uint16_t crwDir)" --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">void Exiv2::CiffHeader::remove </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">uint16_t </td>
<td class="mdname" nowrap> <em>crwTagId</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>uint16_t </td>
<td class="mdname" nowrap> <em>crwDir</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Remove entry <em>crwTagId</em> in directory <em>crwDir</em> from the parse tree. If it's the last entry in the directory, the directory is removed as well, etc.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>crwTagId</em> </td><td><a class="el" href="namespaceExiv2_1_1Tag.html">Tag</a> id to be removed. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>crwDir</em> </td><td>Parent directory of the tag. </td></tr>
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<a class="anchor" name="0708d4c36aac75709054afd1cb8cad5a"></a><!-- doxytag: member="Exiv2::CiffHeader::write" ref="0708d4c36aac75709054afd1cb8cad5a" args="(Blob &blob) const " --><p>
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<td class="md" nowrap valign="top">void Exiv2::CiffHeader::write </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="namespaceExiv2.html#6e7b9a2ef47caec919b15f1ae6ff4872">Blob</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>blob</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
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<p>
Write the Crw image to the binary image <em>blob</em>, starting with the Ciff header. This method appends to the blob.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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<tr><td valign="top"></td><td valign="top"><em>blob</em> </td><td>Binary image to add to.</td></tr>
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<dl compact><dt><b>Exceptions:</b></dt><dd>
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<tr><td valign="top"></td><td valign="top"><em><a class="el" href="classExiv2_1_1Error.html">Error</a></em> </td><td>If the image cannot be written. </td></tr>
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<hr>The documentation for this class was generated from the following files:<ul>
<li><a class="el" href="crwimage_8hpp.html">crwimage.hpp</a><li>crwimage.cpp</ul>
<hr size="1"><address style="align: right;"><small>Generated on Fri Jun 2 23:54:51 2006 for Exiv2 by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.6 </small></address>
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