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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. *
*/
#pragma GCC diagnostic ignored "-Wvariadic-macros"
#pragma GCC diagnostic ignored "-Wunused-parameter"
#define NP_AXIS_MAX 16383
#include <stdbool.h>
#include <string.h>
#include <windows.h>
#include "../ftnoir_protocol_ft/fttypes.h"
#define FT_EXPORT(t) __declspec(dllexport) t __stdcall
#if 0
# include <stdio.h>
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* ipc_heap = 0;
static HANDLE ipc_mutex = 0;
static const char* dllVersion = "1.0.0.0";
static const char* dllProvider = "FreeTrack";
static bool impl_create_mapping(void)
{
if (ipc_heap != NULL)
return true;
hFTMemMap = CreateFileMappingA(INVALID_HANDLE_VALUE,
NULL,
PAGE_READWRITE,
0,
sizeof(FTHeap),
(LPCSTR) FREETRACK_HEAP);
if (hFTMemMap == NULL)
return (ipc_heap = NULL), false;
ipc_heap = (FTHeap*) MapViewOfFile(hFTMemMap, FILE_MAP_WRITE, 0, 0, sizeof(FTHeap));
ipc_mutex = CreateMutexA(NULL, false, FREETRACK_MUTEX);
return true;
}
#pragma comment (linker, "/export:FTGetData")
FT_EXPORT(bool) FTGetData(FTData* data)
{
if (impl_create_mapping() == false)
return false;
if (ipc_mutex && WaitForSingleObject(ipc_mutex, 16) == WAIT_OBJECT_0) {
if (ipc_heap) {
if (ipc_heap->data.DataID > (1 << 29))
ipc_heap->data.DataID = 0;
data->DataID = ipc_heap->data.DataID;
}
ReleaseMutex(ipc_mutex);
}
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!
*/
#pragma comment (linker, "/export:FTReportName")
FT_EXPORT(void) FTReportName( int name )
{
dbg_report("FTReportName request (ID = %d).\n", name);
}
#pragma comment (linker, "/export:FTGetDllVersion")
FT_EXPORT(const char*) FTGetDllVersion(void)
{
dbg_report("FTGetDllVersion request.\n");
return dllVersion;
}
#pragma comment (linker, "/export:FTProvider")
FT_EXPORT(const char*) FTProvider(void)
{
dbg_report("FTProvider request.\n");
return dllProvider;
}
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