ngcdttIPC.hpp

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#ifndef ngcdttIPC_H
#define ngcdttIPC_H
 
 
#ifndef __cplusplus
#error This is a C++ include file and cannot be used from plain C
#endif
 
/* 
 * System Headers 
 */
#include <sys/ioctl.h>
#include <sys/shm.h>
#include <arpa/inet.h>
 
/* 
 * IPC
 */
#include <ngc/core/ngcbSHM.hpp>
 
/*
 * Local Headers 
 */
#include <ngc/core/ngcdttPUBLISH.hpp>

struct ngcdtt_shm_t {
  int id;

  void *mem;

  ngcdtt_shm_t() {id = -1; mem = NULL;}
};

class ngcdttIPC: public ngcdttPUBLISH 
{
public:
  ngcdttIPC();                             

  explicit ngcdttIPC(int n);                             

  virtual ~ngcdttIPC();                   

  int Configure(const char *name, int nx, int ny);

  void Shutdown();

  int IdxOut();

  int IdxIn();

  int Locked(int idx);

  int Lock(int idx);

  int TryLock(int idx);

  int Unlock(int idx);

  int Wait(int idx);

  int Publish(int idx);

  void Invalidate(int idx);
 
protected: 
 
private:
  void Init_();  
 
  /*
   * Camera display interface
   */
  
  int endian_; 

  int idxIn_; 

  int idxOut_; 

  int init_;
 
  /*
   * Shared memory interface
   */

  int numBuf_;

  ngcdtt_shm_t *shm_;

  ngcbSHM *evt_;

  int Sem_(int idx);

  void Shutdown_();
 
};
 
#endif