examples/Base/MessageQueueExample/Inverter/inc/CInverter.h

/*
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  list of conditions and the following disclaimer.
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  may be used to endorse or promote products derived from this software
  without specific prior written permission.

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Description:  
*/


#ifndef CINVERTER_H_
#define CINVERTER_H_
#include "e32base.h" //for using CPeriodic
#include "e32msgqueue.h" 

class CInverter 
{
public:
        static CInverter* NewL();
        virtual ~CInverter();
        void Start();
        
        //Recieve message from the messagequeue.
        TInt RecieveMsg();      
        
        //Send message to the InverterOutQ.
        void SendMsg();         
        
        void Stop();  
        
        //A callback function to be called whenever the timer expires after certain interval of time . 
        TInt static StaticWake(TAny*); 
        
        void ConstructL();
        
        //Invert the user words input by the user.
        void DoInvert();
        
        //Reverse the word of the sentence coming to the Inverter.
        void ReverseWord(TBuf<20> buf);
        
private:
        // A periodic timer to be used to wake the inverter to start recieving the messages . 
        CPeriodic *iTimer;
        
        //Message queues to be opened and used to send data to inverter. 
        RMsgQueue <TBuf<100> > iOutMsgQ;          
        
        //Message queues to be opened and used to recieve data from inverter. 
        RMsgQueue <TBuf<100> > iInMsgQ;
        
        //Buffer to store inverted message.
        TBuf<100> iMsgQData; 
        
        //Buffer to store the message to be sent to InverterOutQ.
        TBuf<100> idestMsg;
        
        //Temporary buffers to reverse the words of the sentence.
        TBuf<20> iwords;
        TBuf<20> itmpWord; 
};

#endif /*CINVERTER_H_*/

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