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<title>Exiv2: Exiv2::Internal::TiffSubIfd Class Reference</title>
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<div class="navpath"><a class="el" href="namespaceExiv2.html">Exiv2</a>::<a class="el" href="namespaceExiv2_1_1Internal.html">Internal</a>::<a class="el" href="classExiv2_1_1Internal_1_1TiffSubIfd.html">TiffSubIfd</a>
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<h1>Exiv2::Internal::TiffSubIfd Class Reference</h1><!-- doxytag: class="Exiv2::Internal::TiffSubIfd" --><!-- doxytag: inherits="Exiv2::Internal::TiffEntryBase" -->This class models a TIFF sub-directory (sub-IFD). A sub-IFD is an entry with one or more values that are pointers to IFD structures containing an IFD. The TIFF standard defines some important tags to be sub-IFDs, including the Exif and GPS tags.
<a href="#_details">More...</a>
<p>
<code>#include <tiffcomposite_int.hpp></code>
<p>
<div class="dynheader">
Inheritance diagram for Exiv2::Internal::TiffSubIfd:</div>
<div class="dynsection">
<p><center><img src="classExiv2_1_1Internal_1_1TiffSubIfd__inherit__graph.png" border="0" usemap="#Exiv2_1_1Internal_1_1TiffSubIfd__inherit__map" alt="Inheritance graph"></center>
<map name="Exiv2_1_1Internal_1_1TiffSubIfd__inherit__map">
<area shape="rect" id="node2" href="classExiv2_1_1Internal_1_1TiffEntryBase.html" title="This abstract base class provides the common functionality of an IFD directory entry..." alt="" coords="5,80,325,107"><area shape="rect" id="node4" href="classExiv2_1_1Internal_1_1TiffComponent.html" title="Interface class for components of a TIFF directory hierarchy (Composite pattern)..." alt="" coords="5,5,325,32"></map>
<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center></div>
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Collaboration diagram for Exiv2::Internal::TiffSubIfd:</div>
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<p><center><img src="classExiv2_1_1Internal_1_1TiffSubIfd__coll__graph.png" border="0" usemap="#Exiv2_1_1Internal_1_1TiffSubIfd__coll__map" alt="Collaboration graph"></center>
<map name="Exiv2_1_1Internal_1_1TiffSubIfd__coll__map">
<area shape="rect" id="node2" href="classExiv2_1_1Internal_1_1TiffEntryBase.html" title="This abstract base class provides the common functionality of an IFD directory entry..." alt="" coords="457,49,777,76"><area shape="rect" id="node4" href="classExiv2_1_1Internal_1_1TiffComponent.html" title="Interface class for components of a TIFF directory hierarchy (Composite pattern)..." alt="" coords="7,84,327,111"><area shape="rect" id="node10" href="classExiv2_1_1Internal_1_1TiffDirectory.html" title="This class models a TIFF directory (Ifd). It is a composite component of the TIFF..." alt="" coords="457,104,777,131"><area shape="rect" id="node6" href="classExiv2_1_1Value.html" title="Common interface for all types of values used with metadata." alt="" coords="96,5,237,32"><area shape="rect" id="node14" title="STL class." alt="" coords="527,160,708,187"></map>
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<p>
<a href="classExiv2_1_1Internal_1_1TiffSubIfd-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 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="7e2166b78b742dfa5302dcfb49d27801"></a><!-- doxytag: member="Exiv2::Internal::TiffSubIfd::TiffSubIfd" ref="7e2166b78b742dfa5302dcfb49d27801" args="(uint16_t tag, uint16_t group, uint16_t newGroup)" -->
</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffSubIfd.html#7e2166b78b742dfa5302dcfb49d27801">TiffSubIfd</a> (uint16_t tag, uint16_t group, uint16_t newGroup)</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="e826acfbfcd9a7ac5c29253cd4ae0db0"></a><!-- doxytag: member="Exiv2::Internal::TiffSubIfd::~TiffSubIfd" ref="e826acfbfcd9a7ac5c29253cd4ae0db0" args="()" -->
virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffSubIfd.html#e826acfbfcd9a7ac5c29253cd4ae0db0">~TiffSubIfd</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Virtual destructor. <br></td></tr>
<tr><td colspan="2"><br><h2>Protected Member Functions</h2></td></tr>
<tr><td colspan="2"><div class="groupHeader">Manipulators</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="d518b34657d195f5c33f6d39b377b31f"></a><!-- doxytag: member="Exiv2::Internal::TiffSubIfd::doAddPath" ref="d518b34657d195f5c33f6d39b377b31f" args="(uint16_t tag, TiffPath &tiffPath)" -->
virtual <a class="el" href="classExiv2_1_1Internal_1_1TiffComponent.html">TiffComponent</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffSubIfd.html#d518b34657d195f5c33f6d39b377b31f">doAddPath</a> (uint16_t tag, <a class="el" href="namespaceExiv2_1_1Internal.html#b19b0d2996c210036ff4c659eac717eb">TiffPath</a> &tiffPath)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Implements <a class="el" href="classExiv2_1_1Internal_1_1TiffComponent.html#2f118371ca882315b407ae5d04df6702" title="Add a TIFF entry tag to the component. Components on the path to the entry are added...">addPath()</a>. The default implementation does nothing. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="7ce7e891af0f7fb8b62b1af06fde2648"></a><!-- doxytag: member="Exiv2::Internal::TiffSubIfd::doAddChild" ref="7ce7e891af0f7fb8b62b1af06fde2648" args="(TiffComponent::AutoPtr tiffComponent)" -->
virtual <a class="el" href="classExiv2_1_1Internal_1_1TiffComponent.html">TiffComponent</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffSubIfd.html#7ce7e891af0f7fb8b62b1af06fde2648">doAddChild</a> (<a class="el" href="classExiv2_1_1Internal_1_1TiffComponent.html#e6f6d2a03171e797fccd52abde24e3ca">TiffComponent::AutoPtr</a> tiffComponent)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Implements <a class="el" href="classExiv2_1_1Internal_1_1TiffComponent.html#1825bde24910a87e05777b4bd3c0ea5d" title="Add a child to the component. Default is to do nothing.">addChild()</a>. The default implementation does nothing. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="44d995469e32b087944a642eef5caae8"></a><!-- doxytag: member="Exiv2::Internal::TiffSubIfd::doAccept" ref="44d995469e32b087944a642eef5caae8" args="(TiffVisitor &visitor)" -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffSubIfd.html#44d995469e32b087944a642eef5caae8">doAccept</a> (<a class="el" href="classExiv2_1_1Internal_1_1TiffVisitor.html">TiffVisitor</a> &visitor)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Implements <a class="el" href="classExiv2_1_1Internal_1_1TiffComponent.html#e76a57686b20b3f0db99dd43162e6aef" title="Interface to accept visitors (Visitor pattern). Visitors can perform operations on...">accept()</a>. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="3ba7f784899e829b13e7687bc8ad6801"></a><!-- doxytag: member="Exiv2::Internal::TiffSubIfd::doEncode" ref="3ba7f784899e829b13e7687bc8ad6801" args="(TiffEncoder &encoder, const Exifdatum *datum)" -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffSubIfd.html#3ba7f784899e829b13e7687bc8ad6801">doEncode</a> (<a class="el" href="classExiv2_1_1Internal_1_1TiffEncoder.html">TiffEncoder</a> &encoder, const <a class="el" href="classExiv2_1_1Exifdatum.html">Exifdatum</a> *datum)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Implements <a class="el" href="classExiv2_1_1Internal_1_1TiffEntryBase.html#120f4553c20edd9a3bedb5bfb2b70627" title="Encode a TIFF component from the metadatum provided and information from the encoder...">encode()</a>. <br></td></tr>
<tr><td colspan="2"><div class="groupHeader">Write support (Manipulators)</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e51f0a56d00dd9eb66f84b41f8a519fa"></a><!-- doxytag: member="Exiv2::Internal::TiffSubIfd::doWrite" ref="e51f0a56d00dd9eb66f84b41f8a519fa" args="(Blob &blob, ByteOrder byteOrder, int32_t offset, uint32_t valueIdx, uint32_t dataIdx, uint32_t &imageIdx)" -->
virtual uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffSubIfd.html#e51f0a56d00dd9eb66f84b41f8a519fa">doWrite</a> (<a class="el" href="namespaceExiv2.html#6e7b9a2ef47caec919b15f1ae6ff4872">Blob</a> &blob, <a class="el" href="namespaceExiv2.html#94c225faf6d6c611a3828fae1c28efa6">ByteOrder</a> byteOrder, int32_t offset, uint32_t valueIdx, uint32_t dataIdx, uint32_t &imageIdx)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Implements <a class="el" href="classExiv2_1_1Internal_1_1TiffComponent.html#55718c4016169c10a3f798aa5f578ef2" title="Write a TiffComponent to a binary image.">write()</a>. Write the sub-IFD pointers to the <em>blob</em>, return the number of bytes written. The <em>valueIdx</em> and <em>imageIdx</em> arguments are not used. <br></td></tr>
<tr><td colspan="2"><div class="groupHeader">Write support (Accessors)</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="9c981d2609af6bd6c1fe4bde77c07a0f"></a><!-- doxytag: member="Exiv2::Internal::TiffSubIfd::doWriteData" ref="9c981d2609af6bd6c1fe4bde77c07a0f" args="(Blob &blob, ByteOrder byteOrder, int32_t offset, uint32_t dataIdx, uint32_t &imageIdx) const " -->
virtual uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffSubIfd.html#9c981d2609af6bd6c1fe4bde77c07a0f">doWriteData</a> (<a class="el" href="namespaceExiv2.html#6e7b9a2ef47caec919b15f1ae6ff4872">Blob</a> &blob, <a class="el" href="namespaceExiv2.html#94c225faf6d6c611a3828fae1c28efa6">ByteOrder</a> byteOrder, int32_t offset, uint32_t dataIdx, uint32_t &imageIdx) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Implements <a class="el" href="classExiv2_1_1Internal_1_1TiffComponent.html#785a467e54a53a59858ef2675c209cb4" title="Write the IFD data of this component to a binary image. Return the number of bytes...">writeData()</a>. Write the sub-IFDs to the blob. Return the number of bytes written. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="dd983844df527471275b564bb3b65b97"></a><!-- doxytag: member="Exiv2::Internal::TiffSubIfd::doWriteImage" ref="dd983844df527471275b564bb3b65b97" args="(Blob &blob, ByteOrder byteOrder) const " -->
virtual uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffSubIfd.html#dd983844df527471275b564bb3b65b97">doWriteImage</a> (<a class="el" href="namespaceExiv2.html#6e7b9a2ef47caec919b15f1ae6ff4872">Blob</a> &blob, <a class="el" href="namespaceExiv2.html#94c225faf6d6c611a3828fae1c28efa6">ByteOrder</a> byteOrder) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Implements <a class="el" href="classExiv2_1_1Internal_1_1TiffComponent.html#e2628c0c912cb171367d75b557dbeb96" title="Write the image data of this component to a binary image. Return the number of bytes...">writeImage()</a>. Write the image data of each sub-IFD to the blob. Return the number of bytes written. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="01e0c4fd6c64c4724c4561b315894b38"></a><!-- doxytag: member="Exiv2::Internal::TiffSubIfd::doSize" ref="01e0c4fd6c64c4724c4561b315894b38" args="() const " -->
uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffSubIfd.html#01e0c4fd6c64c4724c4561b315894b38">doSize</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Implements <a class="el" href="classExiv2_1_1Internal_1_1TiffComponent.html#70cb160a3ee96b6f3d4121e85f3628ab" title="Return the size in bytes of the IFD value of this component when written to a binary...">size()</a>. Return the size of the sub-Ifd pointers. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e1dd47e5095806c7fbf370f1c8f28cf7"></a><!-- doxytag: member="Exiv2::Internal::TiffSubIfd::doSizeData" ref="e1dd47e5095806c7fbf370f1c8f28cf7" args="() const " -->
virtual uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffSubIfd.html#e1dd47e5095806c7fbf370f1c8f28cf7">doSizeData</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Implements <a class="el" href="classExiv2_1_1Internal_1_1TiffComponent.html#5c6eabeeb172dd41745f6713bcfcb34f" title="Return the size in bytes of the IFD data of this component when written to a binary...">sizeData()</a>. Return the sum of the sizes of all sub-IFDs. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a9a33128535d361ca4d2090012644064"></a><!-- doxytag: member="Exiv2::Internal::TiffSubIfd::doSizeImage" ref="a9a33128535d361ca4d2090012644064" args="() const " -->
virtual uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1Internal_1_1TiffSubIfd.html#a9a33128535d361ca4d2090012644064">doSizeImage</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Implements <a class="el" href="classExiv2_1_1Internal_1_1TiffComponent.html#192645bb7f6f48a8e4bbf0fc330555e4" title="Return the size in bytes of the image data of this component when written to a binary...">sizeImage()</a>. Return the sum of the image sizes of all sub-IFDs. <br></td></tr>
<tr><td colspan="2"><br><h2>Friends</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="31374ffe9078164397312eb0092b8177"></a><!-- doxytag: member="Exiv2::Internal::TiffSubIfd::TiffReader" ref="31374ffe9078164397312eb0092b8177" args="" -->
class </td><td class="memItemRight" valign="bottom"><b>TiffReader</b></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
This class models a TIFF sub-directory (sub-IFD). A sub-IFD is an entry with one or more values that are pointers to IFD structures containing an IFD. The TIFF standard defines some important tags to be sub-IFDs, including the Exif and GPS tags. <hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="tiffcomposite__int_8hpp.html">tiffcomposite_int.hpp</a></ul>
</div>
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