tdll.h.svn-base

来自「ffshow源码」· SVN-BASE 代码 · 共 79 行

#ifndef _TDLL_H_
#define _TDLL_H_

#include "Tconfig.h"

class Tdll
{
public:
 bool ok;
 Tdll(const char_t *dllName1,const Tconfig *config)
  {
   char_t name[MAX_PATH],ext[MAX_PATH];
   _splitpath(dllName1,NULL,NULL,name,ext);
   if (config)
    {
     char_t dllName2[MAX_PATH]; //installdir+filename+ext
     _makepath(dllName2,NULL,config->pth,name,ext); 
     hdll=LoadLibrary(dllName2);
    }
   else 
    hdll=NULL;  
   if (!hdll)
    {
     hdll=LoadLibrary(dllName1);
     if (!hdll)
      {
       if (config)
        {
         char_t dllName3[MAX_PATH]; //ffdshow.ax_path+filename+ext
         _makepath(dllName3,NULL,config->epth,name,ext);
         hdll=LoadLibrary(dllName3);
        } 
       if (!hdll)
        {
         char_t dllName0[MAX_PATH]; //only filename+ext - let Windows find it
         _makepath(dllName0,NULL,NULL,name,ext);
         hdll=LoadLibrary(dllName0);
        }
      }
    }
   ok=(hdll!=NULL);
  }
 ~Tdll()
  {
   if (hdll) FreeLibrary(hdll);
  }
 HMODULE hdll;
 template<class T> __forceinline void loadFunction(T &fnc,const char *name)
  {
   fnc=hdll?(T)GetProcAddress(hdll,name):NULL;
   ok&=(fnc!=NULL);
  }
 static bool check(const char_t *dllName1,const Tconfig *config)
  {
   char_t name[MAX_PATH],ext[MAX_PATH];
   _splitpath(dllName1,NULL,NULL,name,ext);
   if (config)
    {
     char_t dllName2[MAX_PATH]; //installdir+filename+ext
     _makepath(dllName2,NULL,config->pth,name,ext); 
     if (fileexists(dllName2)) return true;
    }
   if (fileexists(dllName1)) return true;
   if (config)
    {
     char_t dllName3[MAX_PATH]; //ffdshow.ax_path+filename+ext
     _makepath(dllName3,NULL,config->epth,name,ext);
     if (fileexists(dllName3)) return true;
    }
   char_t dllName0[MAX_PATH]; //only filename+ext - let Windows find it
   _makepath(dllName0,NULL,NULL,name,ext);
   char_t dir0[MAX_PATH],*dir0flnm;
   if (SearchPath(NULL,dllName0,NULL,MAX_PATH,dir0,&dir0flnm)) return true;
   return false;
  }
};

#endif