小技巧：用CxImage将从摄像头获取的图像原始数据转成JPG，然后通过DDS发送出去

觉得没什么比代码更清楚了。直接“翠花，上代码”.

int VideoPublisher_T::publishVideo(long lw,long lh,ACE_UINT8 * dibData, long size)    
{     
ACE_UINT8* jpgImageData = 0;     
long jpgImageDataSize = 0;     
CxImage image;     
Video::FrameDataWriter_var dw = Video::FrameDataWriter::_narrow(this->dataWriter_.in());     
if (CORBA::is_nil(dw.in()))     
{     
ACE_ERROR_RETURN((LM_ERROR,"(%t|%T) narrow frame data writer\n"),-1);     
}     
// bytes alignment     
ACE_UINT32 bytesPerLine = 4 * ((lw * 24 + 31)/32);     
// Convert original RGB data to Image     
image.CreateFromArray((unsigned char *)dibData, lw, lh, 24, bytesPerLine, false);     
image.Encode(jpgImageData,jpgImageDataSize,CXIMAGE_FORMAT_JPG);     
image.SetJpegQuality(24); 
Video::Frame frame;    
frame.frameId = 0;     
frame.timestamp = ::getTimestamp();     
frame.deviceId = OPTIONS::instance()->getDeviceId();     
frame.type = Video::IT_JPG;     
frame.deviceInfo = CORBA::string_dup(this->statMsg_);     
frame.image.length(jpgImageDataSize);     
ACE_OS::memcpy(frame.image.get_buffer(),(const void*)jpgImageData,jpgImageDataSize);     
image.FreeMemory(jpgImageData); 
DDS::ReturnCode_t ret = dw->write(frame, DDS::HANDLE_NIL);    
if (ret != DDS::RETCODE_OK)     
{ 
ACE_ERROR_RETURN((LM_ERROR,"(%t|%T) data writer\n"),-1); 
} 
return 0;    
}