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<p>This function sets up the read channel. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">XVprocSsPtr</td><td>is the pointer to the VPSS instance. </td></tr>
    <tr><td class="paramname">RdBaseAddress</td><td>is the address in DDR where frame buffers are located </td></tr>
    <tr><td class="paramname">window</td><td>is pointer to sub-frame window </td></tr>
    <tr><td cl