DspParserBase.h

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#ifndef tcDspParserBase_H
#define tcDspParserBase_H
 
// This allows the parser to be used on a Windows(tm) platform
#ifdef WIN32
#define WIN32_LEAN_AND_MEAN
#ifndef STRICT
#define STRICT 1
#endif
 
#include <windows.h>
 
#ifndef INIT_CRITICAL
#define INIT_CRITICAL(sema)  InitializeCriticalSection(&(sema))
#endif
#ifndef DEL_CRITICAL
#define DEL_CRITICAL(sema)   DeleteCriticalSection(&(sema))
#endif
#ifndef ENTER_CRITICAL
#define ENTER_CRITICAL(sema) EnterCriticalSection(&(sema))
#endif
#ifndef LEAVE_CRITICAL
#define LEAVE_CRITICAL(sema) LeaveCriticalSection(&(sema))
#endif
typedef CRITICAL_SECTION C_SECT;
 
// Otherwise, assume this is the MityDSP itself
#elif defined(MITYDSP)
 
#include <std.h>
#include <sem.h>
 
#ifndef INIT_CRITICAL
#define INIT_CRITICAL(sema)  ((sema) = SEM_create(1, NULL))
#endif
#ifndef DEL_CRITICAL
#define DEL_CRITICAL(sema)   (SEM_delete(sema))
#endif
#ifndef ENTER_CRITICAL
#define ENTER_CRITICAL(sema) (SEM_pend((sema), SYS_FOREVER))
#endif
#ifndef LEAVE_CRITICAL
#define LEAVE_CRITICAL(sema) (SEM_post(sema))
#endif
typedef SEM_Handle C_SECT;
 
#else 
 
#ifndef INIT_CRITICAL
#define INIT_CRITICAL(sema)
#endif
#ifndef DEL_CRITICAL
#define DEL_CRITICAL(sema)
#endif
#ifndef ENTER_CRITICAL
#define ENTER_CRITICAL(sema)
#endif
#ifndef LEAVE_CRITICAL
#define LEAVE_CRITICAL(sema)
#endif
typedef int C_SECT;
 
#include <stdlib.h>
#include <stdio.h>
 
#endif
 
// Common code belongs in the MityDSP namespace
namespace SocCamera
{
 
class tcDspParserBase
{
public:
 
    typedef enum
    {
        eeParseOK = 0,           
        eeParseChecksumErr = -1, 
        eeParseSyncErr = -2,     
        eeParseBustedMsg = -3,   
        eeParseTooBigErr = -4,   
        eeBaseLast = -5          
    } teDspParseStatus;      
 
    typedef bool (*tfParserCallback)(int, void *, int, unsigned int,
        void *);
 
    // constructors and destructors
    tcDspParserBase(char *apOutBuf = NULL, int anOutBufLen = 4096);
    virtual ~tcDspParserBase();
 
    // class-wide external methods
 
    // per-object external methods
    virtual bool ResetParser(char *apOutBuf = NULL, int anOutBufLen = 0);
    virtual int AddData(void *apData, int anLength);
    virtual void RegisterCallback(tfParserCallback afCallback,
        void *apUser = NULL);
 
    // class-wide externally visible attributes
 
    // per-object externally visible attributes
    unsigned int mnBytesRead;     
    unsigned int mnBytesWritten;  
    unsigned int mnGoodMsgs;      
    unsigned int mnBadMsgs;       
    unsigned int mnSyncErrs;      
    unsigned int mnChecksumErrs;  
 
protected:
 
    // class-wide internal methods
 
    // per-object internal methods
    int AssembleLine(void *apInput, int anLength, bool &arLineComplete);
    char AsciiHexDigitVal(char anHexdigit);
 
    // class-wide internal attributes
 
    // per-object internal attributes
    tfParserCallback mfCallback;       
    C_SECT mhMutex;          
    bool mbStorageCreated; 
    char *mpOutBuf;         
    int mnOutBufLen;      
    unsigned int mnChecksum;       
    char *maLineBuffer;     
    int mnLineBufLen;     
    int mnLinePos;        
    void *mpUserParameter;  
};
 
} // end of MityDSP namespace
 
#endif