videoio_8h-source.html

pwlib开发文档

00787     <span class="keyword">virtual</span> BOOL IsOpen();
00788 
00791     <span class="keyword">virtual</span> BOOL Close();
00792 
00795     <span class="keyword">virtual</span> <a class="code" href="classPStringList.html">PStringList</a> GetDeviceNames() <span class="keyword">const</span>;
00796 
00799     <span class="keyword">virtual</span> BOOL EndFrame();
00800 
00801   <span class="keyword">protected</span>:
00802     <span class="keywordtype">unsigned</span>   frameNumber;
00803 };
00804 
00805 <span class="preprocessor">#endif // SHOULD_BE_MOVED_TO_PLUGIN</span>
00806 <span class="preprocessor"></span>
<a name="l00809"></a><a class="code" href="classPVideoInputDevice.html">00809</a> <span class="keyword">class </span><a class="code" href="classPVideoInputDevice.html">PVideoInputDevice</a> : <span class="keyword">public</span> <a class="code" href="classPVideoDevice.html">PVideoDevice</a>
00810 {
00811   <a class="code" href="object_8h.html#a27">PCLASSINFO</a>(<a class="code" href="classPVideoInputDevice.html">PVideoInputDevice</a>, <a class="code" href="classPVideoDevice.html">PVideoDevice</a>);
00812 
00813   <span class="keyword">public</span>:
00816     <span class="comment">//PVideoInputDevice();</span>
00817 
<a name="l00820"></a><a class="code" href="classPVideoInputDevice.html#a0">00820</a>     <a class="code" href="classPVideoInputDevice.html#a0">~PVideoInputDevice</a>() { <a class="code" href="classPVideoInputDevice.html#a3">Close</a>(); }
00821 
00825     <span class="keyword">static</span> <a class="code" href="classPStringList.html">PStringList</a> <a class="code" href="classPVideoInputDevice.html#d0">GetDriverNames</a>(<a class="code" href="classPPluginManager.html">PPluginManager</a> * pluginMgr = NULL);
00826 
00830     <span class="keyword">static</span> <a class="code" href="classPStringList.html">PStringList</a> <a class="code" href="classPVideoInputDevice.html#d1">GetDriversDeviceNames</a>(
00831                                      <span class="keyword">const</span> <a class="code" href="classPString.html">PString</a> &amp;driverName,
00832                                      <a class="code" href="classPPluginManager.html">PPluginManager</a> * pluginMgr = NULL
00833                                      );
00834 
00838     <span class="keyword">static</span> <a class="code" href="classPVideoInputDevice.html">PVideoInputDevice</a> *<a class="code" href="classPVideoInputDevice.html#d2">CreateDevice</a>(
00839                                           <span class="keyword">const</span> <a class="code" href="classPString.html">PString</a> &amp;driverName,
00840                                           <a class="code" href="classPPluginManager.html">PPluginManager</a> * pluginMgr = NULL
00841                                           );
00842 
00843     <span class="comment">/* Return the matching video input device that corresponds to the devicename.</span>
00844 <span class="comment">       So, for "fake" return a device that will generate fake video.</span>
00845 <span class="comment">       For "Phillips 680 webcam" (eg) will return appropriate grabber.</span>
00846 <span class="comment">       Note that Phillips will return the appropriate grabber also.</span>
00847 <span class="comment">     */</span>
00848     <span class="keyword">static</span> <a class="code" href="classPVideoInputDevice.html">PVideoInputDevice</a> *<a class="code" href="classPVideoInputDevice.html#d3">CreateDeviceByName</a>(<span class="keyword">const</span> <a class="code" href="classPString.html">PString</a> &amp;<a class="code" href="classPVideoDevice.html#n0">deviceName</a>,
00849                                           <a class="code" href="classPPluginManager.html">PPluginManager</a> * pluginMgr = NULL
00850                                           );
00851 
00855     <span class="keyword">static</span> <a class="code" href="classPVideoInputDevice.html">PVideoInputDevice</a> *<a class="code" href="classPVideoInputDevice.html#d4">CreateOpenedDevice</a>(
00856                                           <span class="keyword">const</span> <a class="code" href="classPString.html">PString</a> &amp; driverName,
00857                                           <span class="keyword">const</span> <a class="code" href="classPString.html">PString</a> &amp; <a class="code" href="classPVideoDevice.html#n0">deviceName</a>,
00858                                           BOOL startImmediate = TRUE,
00859                                           <a class="code" href="classPPluginManager.html">PPluginManager</a> * pluginMgr = NULL
00860                                           );
00861 
00864     <span class="keyword">virtual</span> BOOL <a class="code" href="classPVideoInputDevice.html#a1">CanCaptureVideo</a>() <span class="keyword">const</span>;
00865  
00868     <span class="keyword">virtual</span> BOOL <a class="code" href="classPVideoInputDevice.html#a2">Open</a>(
00869       <span class="keyword">const</span> <a class="code" href="classPString.html">PString</a> &amp; <a class="code" href="classPVideoDevice.html#n0">deviceName</a>,   
00870       BOOL startImmediate = TRUE    
00871     ) = 0;
00872 
<a name="l00873"></a><a class="code" href="classPVideoInputDevice.html#a3">00873</a>     <span class="keyword">virtual</span> BOOL <a class="code" href="classPVideoInputDevice.html#a3">Close</a>(
00874     ) { <span class="keywordflow">return</span> TRUE; }
00875 
00878     <span class="keyword">virtual</span> BOOL <a class="code" href="classPVideoInputDevice.html#a4">IsCapturing</a>() = 0;
00879 
00885     <span class="keyword">virtual</span> PINDEX <a class="code" href="classPVideoInputDevice.html#a5">GetMaxFrameBytes</a>() = 0;
00886 
00889     <span class="keyword">virtual</span> BOOL <a class="code" href="classPVideoInputDevice.html#a6">GetFrame</a>(
00890       <a class="code" href="classPBYTEArray.html">PBYTEArray</a> &amp; frame
00891     ) = 0;
00892 
00895     <span class="keyword">virtual</span> BOOL <a class="code" href="classPVideoInputDevice.html#a7">GetFrameData</a>(
00896       BYTE * buffer,                 
00897       PINDEX * bytesReturned = NULL  
00898     ) = 0;
00899 
00902     <span class="keyword">virtual</span> BOOL <a class="code" href="classPVideoInputDevice.html#a8">GetFrameDataNoDelay</a>(
00903       BYTE * buffer,                 
00904       PINDEX * bytesReturned = NULL  
00905     ) = 0;
00906 
00909     <span class="keyword">virtual</span> BOOL <a class="code" href="classPVideoInputDevice.html#a9">TestAllFormats</a>() = 0;
00910 };
00911 
00913 <span class="comment">//</span>
00914 <span class="comment">// declare macros and structures needed for video input plugins</span>
00915 <span class="comment">//</span>
00916 
<a name="l00917"></a><a class="code" href="classPVideoInputDevicePluginServiceDescriptor.html">00917</a> <span class="keyword">class </span><a class="code" href="classPVideoInputDevicePluginServiceDescriptor.html">PVideoInputDevicePluginServiceDescriptor</a> : <span class="keyword">public</span> <a class="code" href="classPPluginServiceDescriptor.html">PPluginServiceDescriptor</a>
00918 {
00919   <span class="keyword">public</span>:
<a name="l00920"></a><a class="code" href="classPVideoInputDevicePluginServiceDescriptor.html#a0">00920</a>     <a class="code" href="classPVideoInputDevicePluginServiceDescriptor.html#a0">PVideoInputDevicePluginServiceDescriptor</a>(
00921                      <span class="keywordtype">unsigned</span> (*_GetVersion)(),
00922                <a class="code" href="classPVideoInputDevice.html">PVideoInputDevice</a> *(*_CreateInstance)(),
00923                  <a class="code" href="classPStringList.html">PStringList</a> (*_GetDeviceNames)()
00924      )
00925     : <a class="code" href="classPPluginServiceDescriptor.html">PPluginServiceDescriptor</a>(_GetVersion),
00926       <a class="code" href="classPVideoInputDevicePluginServiceDescriptor.html#m0">CreateInstance</a>(_CreateInstance),
00927       <a class="code" href="classPVideoInputDevicePluginServiceDescriptor.html#m1">GetDeviceNames</a>(_GetDeviceNames)
00928     { }
00929 
00930     <a class="code" href="classPVideoInputDevice.html">PVideoInputDevice</a> *(*CreateInstance)();
00931     <a class="code" href="classPStringList.html">PStringList</a> (*<a class="code" href="classPVideoInputDevicePluginServiceDescriptor.html#m1">GetDeviceNames</a>) ();
00932 };
00933 
00934 
<a name="l00935"></a><a class="code" href="videoio_8h.html#a0">00935</a> <span class="preprocessor">#define PCREATE_VIDINPUT_SERVICE_DESCRIPTOR(className, versionFn) \</span>
00936 <span class="preprocessor">PVideoInputDevice * className##_CreateInstance () \</span>
00937 <span class="preprocessor">{ \</span>
00938 <span class="preprocessor">  return new className; \</span>
00939 <span class="preprocessor">} \</span>
00940 <span class="preprocessor">\</span>
00941 <span class="preprocessor">PStringList className##_GetDeviceNames () \</span>
00942 <span class="preprocessor">{ \</span>
00943 <span class="preprocessor">  return className::GetInputDeviceNames(); \</span>
00944 <span class="preprocessor">} \</span>
00945 <span class="preprocessor">\</span>
00946 <span class="preprocessor">PVideoInputDevicePluginServiceDescriptor className##_descriptor(\</span>
00947 <span class="preprocessor">   versionFn, \</span>
00948 <span class="preprocessor">   className##_CreateInstance, \</span>
00949 <span class="preprocessor">   className##_GetDeviceNames \</span>
00950 <span class="preprocessor">); \</span>
00951 <span class="preprocessor"></span>
<a name="l00952"></a><a class="code" href="videoio_8h.html#a1">00952</a> <span class="preprocessor"></span><span class="preprocessor">#define PCREATE_VIDINPUT_PLUGIN(name, className) \</span>
00953 <span class="preprocessor">PCREATE_PLUGIN_VERSION_FN(name, PVideoInputDevice) \</span>
00954 <span class="preprocessor">PCREATE_VIDINPUT_SERVICE_DESCRIPTOR(className, PPLUGIN_VERSION_FN(name, PVideoInputDevice)) \</span>
00955 <span class="preprocessor">PCREATE_PLUGIN(name, PVideoInputDevice, &amp;className##_descriptor)</span>
00956 <span class="preprocessor"></span>
00958 <span class="comment">//</span>
00959 <span class="comment">// declare macros and structures needed for video output plugins</span>
00960 <span class="comment">//</span>
00961 
<a name="l00962"></a><a class="code" href="classPVideoOutputDevicePluginServiceDescriptor.html">00962</a> <span class="keyword">class </span><a class="code" href="classPVideoOutputDevicePluginServiceDescriptor.html">PVideoOutputDevicePluginServiceDescriptor</a> : <span class="keyword">public</span> <a class="code" href="classPPluginServiceDescriptor.html">PPluginServiceDescriptor</a>
00963 {
00964   <span class="keyword">public</span>:
<a name="l00965"></a><a class="code" href="classPVideoOutputDevicePluginServiceDescriptor.html#a0">00965</a>     <a class="code" href="classPVideoOutputDevicePluginServiceDescriptor.html#a0">PVideoOutputDevicePluginServiceDescriptor</a>(
00966                      <span class="keywordtype">unsigned</span> (*_GetVersion)(),
00967                <a class="code" href="classPVideoOutputDevice.html">PVideoOutputDevice</a> *(*_CreateInstance)(),
00968                  <a class="code" href="classPStringList.html">PStringList</a> (*_GetDeviceNames)()
00969      )
00970     : <a class="code" href="classPPluginServiceDescriptor.html">PPluginServiceDescriptor</a>(_GetVersion),
00971       <a class="code" href="classPVideoOutputDevicePluginServiceDescriptor.html#m0">CreateInstance</a>(_CreateInstance),
00972       <a class="code" href="classPVideoOutputDevicePluginServiceDescriptor.html#m1">GetDeviceNames</a>(_GetDeviceNames)
00973     { }
00974 
00975     <a class="code" href="classPVideoOutputDevice.html">PVideoOutputDevice</a> *(*CreateInstance)();
00976     <a class="code" href="classPStringList.html">PStringList</a> (*<a class="code" href="classPVideoOutputDevicePluginServiceDescriptor.html#m1">GetDeviceNames</a>) ();
00977 };
00978 
00979 
<a name="l00980"></a><a class="code" href="videoio_8h.html#a2">00980</a> <span class="preprocessor">#define PCREATE_VIDOUTPUT_SERVICE_DESCRIPTOR(className, versionFn) \</span>
00981 <span class="preprocessor">PVideoOutputDevice * className##_CreateInstance () \</span>
00982 <span class="preprocessor">{ \</span>
00983 <span class="preprocessor">  return new className; \</span>
00984 <span class="preprocessor">} \</span>
00985 <span class="preprocessor">\</span>
00986 <span class="preprocessor">PStringList className##_GetDeviceNames () \</span>
00987 <span class="preprocessor">{ \</span>
00988 <span class="preprocessor">  return className::GetOutputDeviceNames(); \</span>
00989 <span class="preprocessor">} \</span>
00990 <span class="preprocessor">\</span>
00991 <span class="preprocessor">PVideoOutputDevicePluginServiceDescriptor className##_descriptor(\</span>
00992 <span class="preprocessor">   versionFn, \</span>
00993 <span class="preprocessor">   className##_CreateInstance, \</span>
00994 <span class="preprocessor">   className##_GetDeviceNames \</span>
00995 <span class="preprocessor">); \</span>
00996 <span class="preprocessor"></span>
<a name="l00997"></a><a class="code" href="videoio_8h.html#a3">00997</a> <span class="preprocessor"></span><span class="preprocessor">#define PCREATE_VIDOUTPUT_PLUGIN(name, className) \</span>
00998 <span class="preprocessor">PCREATE_PLUGIN_VERSION_FN(name, PVideoOutputDevice) \</span>
00999 <span class="preprocessor">PCREATE_VIDOUTPUT_SERVICE_DESCRIPTOR(className, PPLUGIN_VERSION_FN(name, PVideoOutputDevice)) \</span>
01000 <span class="preprocessor">PCREATE_PLUGIN(name, PVideoOutputDevice, &amp;className##_descriptor)</span>
01001 <span class="preprocessor"></span>
01002 <span class="preprocessor">#endif   // _PVIDEOIO</span>
01003 <span class="preprocessor"></span>
01004 <span class="comment">// End Of File ///////////////////////////////////////////////////////////////</span>
</pre></div><hr><address style="align: right;"><small>Generated on Wed Sep 29 22:44:12 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>
</body>
</html>