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/***********************************************************************************
* * FTTypes FTTypes contains the specific type definitions for the *
* * FreeTrack protocol. *
* * It was loosely translated from FTTypes.pas *
* * which was created by the FreeTrack-team. *
* * *
* * Wim Vriend (Developing) *
* * Ron Hendriks (Testing and Research) *
* * *
* * Homepage <http://facetracknoir.sourceforge.net/home/default.htm> *
* * *
* * This program is distributed in the hope that it will be useful, but *
* * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY *
* * or FITNESS FOR A PARTICULAR PURPOSE. *
* * *
* * *
* * The FreeTrackClient sources were translated from the original Delphi sources *
* * created by the FreeTrack developers. *
*/
#define NP_AXIS_MAX 16383
#include <stdarg.h>
#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <windows.h>
#include "ftnoir_protocol_ft/fttypes.h"
#define FT_EXPORT(t) __declspec(dllexport) t __stdcall
FT_EXPORT(bool) FTCreateMapping(void);
#if 0
static FILE *debug_stream = fopen("c:\\FreeTrackClient.log", "a");
#define dbg_report(...) if (debug_stream) { fprintf(debug_stream, __VA_ARGS__); fflush(debug_stream); }
#else
#define dbg_report(...) ((void)0)
#endif
static HANDLE hFTMemMap = 0;
static FTHeap *pMemData = 0;
static HANDLE hFTMutex = 0;
static const char* dllVersion = "1.0.0.0";
static const char* dllProvider = "FreeTrack";
static bool FTCreateMapping(void)
{
if ( pMemData != NULL ) {
return true;
}
dbg_report("FTCreateMapping request (pMemData == NULL).\n");
hFTMemMap = CreateFileMappingA( INVALID_HANDLE_VALUE , 00 , PAGE_READWRITE , 0 ,
sizeof( FTHeap ),
(LPCSTR) FT_MM_DATA );
if (hFTMemMap == NULL)
{
pMemData = NULL;
return false;
}
pMemData = (FTHeap*) MapViewOfFile(hFTMemMap, FILE_MAP_WRITE, 0, 0, sizeof( FTHeap ) );
hFTMutex = CreateMutexA(NULL, false, FREETRACK_MUTEX);
return true;
}
FT_EXPORT(bool) FTGetData(FTData* data)
{
// dbg_report("NP_GetData called.");
if (FTCreateMapping() == false)
return false;
if (hFTMutex && WaitForSingleObject(hFTMutex, 16) == WAIT_OBJECT_0) {
if (pMemData) {
if (pMemData->data.DataID > (1 << 29)) {
pMemData->data.DataID = 0;
}
data->DataID = pMemData->data.DataID;
}
ReleaseMutex(hFTMutex);
}
return true;
}
// For some mysterious reason, the previously existing function FTReportID has been changed to FTReportName, but with an integer as argument.
// The Delphi-code from the FreeTrack repo suggest a char * as argument, so it cost me an afternoon to figure it out (and keep ArmA2 from crashing).
// Thanks guys!
//
FT_EXPORT(void) FTReportName( int name )
{
dbg_report("FTReportName request (ID = %d).\n", name);
}
FT_EXPORT(const char*) FTGetDllVersion(void)
{
dbg_report("FTGetDllVersion request.\n");
return dllVersion;
}
FT_EXPORT(const char*) FTProvider(void)
{
dbg_report("FTProvider request.\n");
return dllProvider;
}
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