classpvideodevice.html

pwlib开发文档

<p>
Reimplemented in <a class="el" href="classPVideoInput1394DcDevice.html#a32">PVideoInput1394DcDevice</a>.    </td>
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<a name="a35" doxytag="PVideoDevice::SetContrast"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PVideoDevice::SetContrast </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">unsigned&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>newContrast</em>          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [virtual]</code></td>
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<p>
Set contrast of the image. 0xffff-High contrast. 
<p>
Reimplemented in <a class="el" href="classPVideoInput1394DcDevice.html#a18">PVideoInput1394DcDevice</a>.    </td>
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<a name="a17" doxytag="PVideoDevice::SetFrameRate"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PVideoDevice::SetFrameRate </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">unsigned&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>rate</em>          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [virtual]</code></td>
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<p>
Set the video frame rate to be used on the device.
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Default behaviour sets the value of the frameRate variable and then returns TRUE. <dl compact><dt><b>Parameters: </b></dt><dd>
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<tr><td valign=top><em>rate</em>&nbsp;</td><td>
Frames per second </td></tr>
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<p>
Reimplemented in <a class="el" href="classPVideoInput1394DcDevice.html#a26">PVideoInput1394DcDevice</a>.    </td>
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<a name="a21" doxytag="PVideoDevice::SetFrameSize"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PVideoDevice::SetFrameSize </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">unsigned&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>width</em>, </td>
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          <td></td>
          <td></td>
          <td class="md" nowrap>unsigned&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>height</em></td>
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          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [virtual]</code></td>
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<p>
Set the frame size to be used.
<p>
Note that devices may not be able to produce the requested size, and this function will fail. See <a class="el" href="classPVideoDevice.html#a20">SetFrameSizeConverter()</a>.
<p>
Default behaviour sets the frameWidth and frameHeight variables and returns TRUE. <dl compact><dt><b>Parameters: </b></dt><dd>
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<tr><td valign=top><em>height</em>&nbsp;</td><td>
New width of frame New height of frame </td></tr>
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<p>
Reimplemented in <a class="el" href="classPVideoInput1394DcDevice.html#a28">PVideoInput1394DcDevice</a>.    </td>
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<a name="a20" doxytag="PVideoDevice::SetFrameSizeConverter"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PVideoDevice::SetFrameSizeConverter </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">unsigned&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>width</em>, </td>
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          <td></td>
          <td></td>
          <td class="md" nowrap>unsigned&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>height</em>, </td>
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          <td></td>
          <td class="md" nowrap>BOOL&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>bScaleNotCrop</em></td>
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          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [virtual]</code></td>
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<p>
Set the frame size to be used, trying converters if available.
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If the device does not support the size, a set of alternate resolutions are attempted. A converter is setup if possible. <dl compact><dt><b>Parameters: </b></dt><dd>
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New width of frame </td></tr>
<tr><td valign=top><em>bScaleNotCrop</em>&nbsp;</td><td>
New height of frame Scale or crop/pad preference </td></tr>
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<p>
Reimplemented in <a class="el" href="classPVideoInput1394DcDevice.html#a31">PVideoInput1394DcDevice</a>.    </td>
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<a name="a37" doxytag="PVideoDevice::SetHue"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PVideoDevice::SetHue </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">unsigned&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>newHue</em>          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [virtual]</code></td>
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<p>
Set hue of the image. 0xffff-High hue. 
<p>
Reimplemented in <a class="el" href="classPVideoInput1394DcDevice.html#a20">PVideoInput1394DcDevice</a>.    </td>
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<a name="a42" doxytag="PVideoDevice::SetPreferredColourFormat"></a><p>
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          <td class="md" nowrap valign="top"> void PVideoDevice::SetPreferredColourFormat </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="mdname1" valign="top" nowrap>&nbsp; <em>colourFmt</em>          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [inline]</code></td>
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<p>
Set preferred native colour format from video capture device. Note empty == no preference.     </td>
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<a name="a41" doxytag="PVideoDevice::SetVFlipState"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PVideoDevice::SetVFlipState </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">BOOL&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>newVFlipState</em>          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [virtual]</code></td>
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<p>
Set the video conversion vertical flip state. Default action is to return FALSE. <dl compact><dt><b>Parameters: </b></dt><dd>
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<tr><td valign=top><em>newVFlipState</em>&nbsp;</td><td>
New vertical flip state </td></tr>
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<a name="a39" doxytag="PVideoDevice::SetVideoChannelFormat"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PVideoDevice::SetVideoChannelFormat </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">int&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>channelNumber</em>, </td>
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          <td></td>
          <td></td>
          <td class="md" nowrap><a class="el" href="classPVideoDevice.html#s15">VideoFormat</a>&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>videoFormat</em></td>
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          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [virtual]</code></td>
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<p>
Set VideoFormat and VideoChannel in one ioctl     </td>
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<a name="a9" doxytag="PVideoDevice::SetVideoFormat"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PVideoDevice::SetVideoFormat </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="classPVideoDevice.html#s15">VideoFormat</a>&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>videoFormat</em>          </td>
          <td class="md" valign="top">)&nbsp;</td>
          <td class="md" nowrap><code> [virtual]</code></td>
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