classpcolourconverter.html

pwlib开发文档

          <td class="mdname" nowrap>&nbsp; <em>width</em>, </td>
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          <td class="md" nowrap>unsigned &amp;&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"> const</td>
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<p>
Get the output frame size. <dl compact><dt><b>Parameters: </b></dt><dd>
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<tr><td valign=top><em>height</em>&nbsp;</td><td>
Width of destination frame Height of destination frame </td></tr>
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<a name="a9" doxytag="PColourConverter::GetMaxDstFrameBytes"></a><p>
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          <td class="md" nowrap valign="top"> PINDEX PColourConverter::GetMaxDstFrameBytes </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> [inline]</code></td>
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<p>
Get the maximum frame size in bytes for destination frames.
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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.     </td>
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<a name="a8" doxytag="PColourConverter::GetMaxSrcFrameBytes"></a><p>
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          <td class="md" nowrap valign="top"> PINDEX PColourConverter::GetMaxSrcFrameBytes </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> [inline]</code></td>
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<p>
Get the maximum frame size in bytes for source frames.
<p>
Note a particular device may be able to provide variable length frames (eg motion JPEG) so will be the maximum size of all frames.     </td>
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<a name="a6" doxytag="PColourConverter::GetSrcColourFormat"></a><p>
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          <td class="md" nowrap valign="top"> const <a class="el" href="classPString.html">PString</a>&amp; PColourConverter::GetSrcColourFormat </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> [inline]</code></td>
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<p>
Get the source colour format.     </td>
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<a name="a13" doxytag="PColourConverter::GetSrcFrameSize"></a><p>
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          <td class="md" nowrap valign="top"> BOOL PColourConverter::GetSrcFrameSize </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">unsigned &amp;&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>width</em>, </td>
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          <td></td>
          <td class="md" nowrap>unsigned &amp;&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"> const</td>
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<p>
Get the input frame size. <dl compact><dt><b>Parameters: </b></dt><dd>
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<tr><td valign=top><em>height</em>&nbsp;</td><td>
Width of source frame Height of source frame </td></tr>
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<a name="a1" doxytag="PColourConverter::GetVFlipState"></a><p>
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          <td class="md" nowrap valign="top"> BOOL PColourConverter::GetVFlipState </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> [inline]</code></td>
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Get the video conversion vertical flip state     </td>
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<a name="a5" doxytag="PColourConverter::SetDstFrameSize"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PColourConverter::SetDstFrameSize </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>bScale</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 destination frame size to be used.
<p>
Default behaviour sets the dstFrameWidth and dstFrameHeight variables, and the scale / crop preference. It then recalculates the frame buffer size in bytes then returns TRUE if the size was calculated correctly. <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 target frame </td></tr>
<tr><td valign=top><em>bScale</em>&nbsp;</td><td>
New height of target frame TRUE if scaling is preferred over crop </td></tr>
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<a name="a3" doxytag="PColourConverter::SetFrameSize"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PColourConverter::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></td>
          <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>
Default behaviour calls <a class="el" href="classPColourConverter.html#a4">SetSrcFrameSize()</a> and <a class="el" href="classPColourConverter.html#a5">SetDstFrameSize()</a>. <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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</dl>    </td>
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<a name="a4" doxytag="PColourConverter::SetSrcFrameSize"></a><p>
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          <td class="md" nowrap valign="top"> virtual BOOL PColourConverter::SetSrcFrameSize </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">)&nbsp;</td>
          <td class="md" colspan="2"><code> [virtual]</code></td>
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