# CSJ2K.j2k.codestream.reader.HeaderDecoder.createChannelDefinitionMapper

## Content

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<h1 id="CSJ2K_j2k_codestream_reader_HeaderDecoder_createChannelDefinitionMapper_" data-uid="CSJ2K.j2k.codestream.reader.HeaderDecoder.createChannelDefinitionMapper*">createChannelDefinitionMapper Method
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="CSJ2K_j2k_codestream_reader_HeaderDecoder_createChannelDefinitionMapper_" data-uid="CSJ2K.j2k.codestream.reader.HeaderDecoder.createChannelDefinitionMapper*"></a>
<h4 id="CSJ2K_j2k_codestream_reader_HeaderDecoder_createChannelDefinitionMapper_CSJ2K_j2k_image_BlkImgDataSrc_CSJ2K_Color_ColorSpace_" data-uid="CSJ2K.j2k.codestream.reader.HeaderDecoder.createChannelDefinitionMapper(CSJ2K.j2k.image.BlkImgDataSrc,CSJ2K.Color.ColorSpace)">createChannelDefinitionMapper(BlkImgDataSrc, ColorSpace)</h4>
<div class="markdown level1 summary"><p>Creates and returns the ChannelDefinitonMapper which maps the
input channels to the channel definition for the appropriate
colorspace.</p>
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<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public virtual BlkImgDataSrc createChannelDefinitionMapper(BlkImgDataSrc src, ColorSpace csMap)</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Overridable Function createChannelDefinitionMapper(src As BlkImgDataSrc, csMap As ColorSpace) As BlkImgDataSrc</code></pre>
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<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="CSJ2K.j2k.image.BlkImgDataSrc.html">BlkImgDataSrc</a></td>
      <td><span class="parametername">src</span></td>
      <td><p>The bit stream reader agent where to get code-block
data from.</p>
</td>
    </tr>
    <tr>
      <td><a class="xref" href="CSJ2K.Color.ColorSpace.html">ColorSpace</a></td>
      <td><span class="parametername">csMap</span></td>
      <td><p>provides color space information from the image file</p>
</td>
    </tr>
  </tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="CSJ2K.j2k.image.BlkImgDataSrc.html">BlkImgDataSrc</a></td>
      <td><p>The channel definition mapping object</p>
</td>
    </tr>
  </tbody>
</table>
<h5 class="exceptions">Exceptions</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Condition</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="CSJ2K.Color.ColorSpaceException.html">ColorSpaceException</a></td>
      <td><p>if image contains a bad colorspace box</p>
</td>
    </tr>
  </tbody>
</table>
</div>