classpvideochannel.html

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Allow free access to this video channel.     </td>
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<a name="z473_3" doxytag="PVideoChannel::GetDefaultDevice"></a><p>
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          <td class="md" nowrap valign="top"> <a class="el" href="classPString.html">PString</a> PVideoChannel::GetDefaultDevice </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="classPVideoChannel.html#z471_0">Directions</a>&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>dir</em>          </td>
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Get the name for the default video devices/driver that is on this platform. Note that a named device may not necessarily do both playing and recording so the arrays returned with the dir# parameter in each value is not necessarily the same.
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<dl compact><dt><b>Returns: </b></dt><dd>
 A platform dependent string for the video player/recorder. </dl>    </td>
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<a name="z473_2" doxytag="PVideoChannel::GetDeviceNames"></a><p>
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          <td class="md" nowrap valign="top"> <a class="el" href="classPStringList.html">PStringList</a> PVideoChannel::GetDeviceNames </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="classPVideoChannel.html#z471_0">Directions</a>&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>dir</em>          </td>
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Get all of the names for video devices/drivers that are available on this platform. Note that a named device may not necessarily do both playing and recording so the arrays returned with the dir# parameter in each value is not necessarily the same.
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<dl compact><dt><b>Returns: </b></dt><dd>
 An array of platform dependent strings for each video player/recorder. </dl>    </td>
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<a name="a23" doxytag="PVideoChannel::GetErrorText"></a><p>
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          <td class="md" nowrap valign="top"> <a class="el" href="classPString.html">PString</a> PVideoChannel::GetErrorText </td>
          <td class="md" valign="top">(&nbsp;</td>
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<a name="a1" doxytag="PVideoChannel::GetGrabHeight"></a><p>
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          <td class="md" nowrap valign="top"> virtual PINDEX PVideoChannel::GetGrabHeight </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
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Return the height of the currently selected grabbing device.     </td>
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<a name="a0" doxytag="PVideoChannel::GetGrabWidth"></a><p>
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          <td class="md" nowrap valign="top"> virtual PINDEX PVideoChannel::GetGrabWidth </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
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Return the width of the currently selected grabbing device.     </td>
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<a name="a22" doxytag="PVideoChannel::GetName"></a><p>
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          <td class="md" nowrap valign="top"> virtual <a class="el" href="classPString.html">PString</a> PVideoChannel::GetName </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
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Get the platform and I/O channel type name of the channel. For example, it would return the filename in PFile# type channels.
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<dl compact><dt><b>Returns: </b></dt><dd>
the name of the channel. </dl>
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Reimplemented from <a class="el" href="classPChannel.html#z47_1">PChannel</a>.    </td>
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<a name="a6" doxytag="PVideoChannel::GetRenderHeight"></a><p>
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          <td class="md" nowrap valign="top"> PINDEX PVideoChannel::GetRenderHeight </td>
          <td class="md" valign="top">(&nbsp;</td>
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Return the previously specified height.     </td>
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<a name="a5" doxytag="PVideoChannel::GetRenderWidth"></a><p>
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          <td class="md" nowrap valign="top"> PINDEX PVideoChannel::GetRenderWidth </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
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Return the previously specified width.     </td>
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<a name="a12" doxytag="PVideoChannel::GetVideoPlayer"></a><p>
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          <td class="md" nowrap valign="top"> virtual <a class="el" href="classPVideoOutputDevice.html">PVideoOutputDevice</a>* PVideoChannel::GetVideoPlayer </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
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Return a pointer to the class for displaying video     </td>
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<a name="a11" doxytag="PVideoChannel::GetVideoReader"></a><p>
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          <td class="md" nowrap valign="top"> virtual <a class="el" href="classPVideoInputDevice.html">PVideoInputDevice</a>* PVideoChannel::GetVideoReader </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
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Return a pointer to the class for acquiring video     </td>
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<a name="a13" doxytag="PVideoChannel::IsGrabberOpen"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PVideoChannel::IsGrabberOpen </td>
          <td class="md" valign="top">(&nbsp;</td>
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See if the grabber is open     </td>
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<a name="z473_1" doxytag="PVideoChannel::IsOpen"></a><p>
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          <td class="md" nowrap valign="top"> BOOL PVideoChannel::IsOpen </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
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return True if one (or both) of the video device class pointers is non NULL. If either pointer is non NULL, then a device is ready to be written to, which indicates this channel is open. 
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Reimplemented from <a class="el" href="classPChannel.html#z47_0">PChannel</a>.    </td>
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<a name="a14" doxytag="PVideoChannel::IsRenderOpen"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PVideoChannel::IsRenderOpen </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
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See if the rendering device is open     </td>
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<a name="z473_0" doxytag="PVideoChannel::Open"></a><p>
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          <td class="md" nowrap valign="top"> BOOL PVideoChannel::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>device</em>, </td>
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          <td class="md" nowrap><a class="el" href="classPVideoChannel.html#z471_0">Directions</a>&nbsp;</td>
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