NdefCallback.h

00001 /*
00002     NdefCallback.h 
00003     Copyright (c) Donatien Garnier 2012
00004     donatien.garnier@appnearme.com
00005     http://www.appnearme.com/
00006 */
00007 
00008 
00009 #ifndef NDEFCALLBACK_H_
00010 #define NDEFCALLBACK_H_
00011 
00012 #include "TLVList.h"
00013 
00014 #include "munfc/core/fwk.h"
00015 #include "munfc/ndef/appnearme_ndef.h"
00016 
00017 class NdefCallback
00018 {
00019 protected:
00020   NdefCallback(); //Callable by MuNFC
00021 
00022   void init(void (*fn)(appnearme_ndef_callback, void*));
00023 
00024   void attach(void (*fn)(TLVList*, void*), void* arg);
00025 
00026   template <class T>
00027   void attach(T* inst, void (T::*member)(TLVList*))
00028   {
00029     m_fn = NULL;
00030     m_inst = inst;
00031     memcpy(m_pMember, (char*)&member, sizeof(member));
00032     m_caller = &NdefCallback::memberCaller<T>;
00033   }
00034 
00035 private:
00036   void callback(tlv_list* payload);
00037 
00038   //Data
00039   TLVList m_tlvList;
00040 
00041   //Function
00042   void(*m_fn)(TLVList*, void*);
00043   void* m_arg;
00044 
00045   //Member of object instance
00046   void* m_inst;
00047   char m_pMember[16];
00048   void (*m_caller)(NdefCallback*, TLVList*);
00049 
00050   template <class T>
00051   static inline void memberCaller(NdefCallback* p, TLVList* tlvList)
00052   {
00053     T* inst = (T*) (p->m_inst);
00054     void (T::*member)(TLVList*);
00055     memcpy(&member, p->m_pMember, sizeof(member));
00056     (inst->*member)(tlvList);
00057   }
00058 
00059   static void staticCallback(tlv_list* payload, void* param);
00060 
00061   friend class MuNFC;
00062 };
00063 
00064 
00065 #endif /* NDEFCALLBACK_H_ */