classpvideoinputdevice.html

pwlib开发文档

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          <td class="md" nowrap><a class="el" href="classPPluginManager.html">PPluginManager</a> *&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>pluginMgr</em> = NULL</td>
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          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [static]</code></td>
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Return video devices that correspond to the specified name     </td>
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<a name="a6" doxytag="PVideoInputDevice::GetFrame"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PVideoInputDevice::GetFrame </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="classPBYTEArray.html">PBYTEArray</a> &amp;&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>frame</em>          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [pure virtual]</code></td>
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Grab a frame.     </td>
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<a name="a7" doxytag="PVideoInputDevice::GetFrameData"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PVideoInputDevice::GetFrameData </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">BYTE *&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>buffer</em>, </td>
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          <td class="md" nowrap>PINDEX *&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>bytesReturned</em> = NULL</td>
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          <td class="md">)&nbsp;</td>
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Grab a frame, after a delay as specified by the frame rate. <dl compact><dt><b>Parameters: </b></dt><dd>
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Buffer to receive frame OPtional bytes returned. </td></tr>
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Implemented in <a class="el" href="classPVideoInput1394DcDevice.html#a9">PVideoInput1394DcDevice</a>.    </td>
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<a name="a8" doxytag="PVideoInputDevice::GetFrameDataNoDelay"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PVideoInputDevice::GetFrameDataNoDelay </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">BYTE *&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>buffer</em>, </td>
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          <td></td>
          <td class="md" nowrap>PINDEX *&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>bytesReturned</em> = NULL</td>
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          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [pure virtual]</code></td>
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Grab a frame. Do not delay according to the current frame rate parameter. <dl compact><dt><b>Parameters: </b></dt><dd>
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Buffer to receive frame OPtional bytes returned. </td></tr>
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Implemented in <a class="el" href="classPVideoInput1394DcDevice.html#a10">PVideoInput1394DcDevice</a>.    </td>
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<a name="a5" doxytag="PVideoInputDevice::GetMaxFrameBytes"></a><p>
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          <td class="md" nowrap valign="top"> virtual PINDEX PVideoInputDevice::GetMaxFrameBytes </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [pure virtual]</code></td>
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Get the maximum frame size in bytes.
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Note a particular device may be able to provide variable length frames (eg motion JPEG) so will be the maximum size of all frames. 
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Implements <a class="el" href="classPVideoDevice.html#a25">PVideoDevice</a>.
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Implemented in <a class="el" href="classPVideoInput1394DcDevice.html#a8">PVideoInput1394DcDevice</a>.    </td>
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<a name="a4" doxytag="PVideoInputDevice::IsCapturing"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PVideoInputDevice::IsCapturing </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [pure virtual]</code></td>
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Determine if the video device I/O capture is in progress. 
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Implemented in <a class="el" href="classPVideoInput1394DcDevice.html#a7">PVideoInput1394DcDevice</a>.    </td>
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<a name="a2" doxytag="PVideoInputDevice::Open"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PVideoInputDevice::Open </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">const <a class="el" href="classPString.html">PString</a> &amp;&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>deviceName</em>, </td>
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          <td class="md" nowrap>BOOL&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>startImmediate</em> = TRUE</td>
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          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [pure virtual]</code></td>
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Open the device given the device name. <dl compact><dt><b>Parameters: </b></dt><dd>
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Device name to open Immediately start device </td></tr>
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<p>
Implements <a class="el" href="classPVideoDevice.html#a2">PVideoDevice</a>.
<p>
Implemented in <a class="el" href="classPVideoInput1394DcDevice.html#a2">PVideoInput1394DcDevice</a>.    </td>
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<a name="a9" doxytag="PVideoInputDevice::TestAllFormats"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PVideoInputDevice::TestAllFormats </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [pure virtual]</code></td>
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Try all known video formats &amp; see which ones are accepted by the video driver 
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Implemented in <a class="el" href="classPVideoInput1394DcDevice.html#a30">PVideoInput1394DcDevice</a>.    </td>
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<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="videoio_8h-source.html">videoio.h</a></ul>
<hr><address style="align: right;"><small>Generated on Wed Sep 29 22:44:20 2004 for PWLib by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border=0 
width=110 height=53></a>1.2.18 </small></address>
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