[Avifile]Libloader and native dll's

Josï¿½ Soriano Dï¿½az Mon, 20 Aug 2001 02:49:08 -0700

        Hello and thank in advance for your time and help.

         My question is not related to avifile. i's about one part of the program, 
the library that allows avifile to load the win32 codecs. I'm working in a 
telerobotics project in Linux ( in order to use real time ) but I need to 
use some native dlls ( cyberimpact.dll a driver of a joystick).
        First I tried to use wine but It didn't work, then in the wine-devel 
mailing list I read about your program and It could be used as a wrapper to 
allow wine load native dlls. So I downloaded your program compiled it, I 
linked the lilloader.a to my .c file ( the prueba.c I'm sending to you), the 
result can be read in out1.txt, and It seemed to qork perfectly.
        However when I tried to execute one function of the dll ( prueba3.c), I got 
a segmention fault. I tried to debug the library an at first sight 
everything was OK, the problem is the memory address returned it's out of 
scope.
        My questions are:

        Is possible to load any dll?

        Am I using well the library, in other words is this the rigth approach?

        Maybe is the problem the wsock.dll stuff that I obtained when loading the 
library, in that case does anyone know how to fix it?


        PLEASE send an answer as quickly as possible even a negative answer, I'm 
really stucked with that, and I need to present result to my boss soon.

Josï¿½ Soriano Dï¿½az
Escuela Superior de Ingenieros de Sevilla




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Descargue GRATUITAMENTE MSN Explorer en http://explorer.msn.es/intl.asp

LoadLibraryA
External func WSOCK32.dll:8
External func WSOCK32.dll:2
External func WSOCK32.dll:13
External func WSOCK32.dll:9
External func WSOCK32.dll:52
External func WSOCK32.dll:4
External func WSOCK32.dll:1
External func WSOCK32.dll:19
External func WSOCK32.dll:12
External func WSOCK32.dll:18
External func WSOCK32.dll:115
External func WSOCK32.dll:16
External func WSOCK32.dll:3
External func WSOCK32.dll:21
External func WSOCK32.dll:23
External func WSOCK32.dll:111
Entering DllMain(DLL_PROCESS_ATTACH) for ./cyberimpact.dll
./cyberimpact.dll: 10000000
ppFile name of module 0 requested
./cyberimpact.dll: 10000000
GetProcAddress
FreeLibrary(mi_dll)
Entering DllMain(DLL_PROCESS_DETACH) for ./cyberimpact.dll
No hubo problemas

LoadLibraryA
External func WSOCK32.dll:8
External func WSOCK32.dll:2
External func WSOCK32.dll:13
External func WSOCK32.dll:9
External func WSOCK32.dll:52
External func WSOCK32.dll:4
External func WSOCK32.dll:1
External func WSOCK32.dll:19
External func WSOCK32.dll:12
External func WSOCK32.dll:18
External func WSOCK32.dll:115
External func WSOCK32.dll:16
External func WSOCK32.dll:3
External func WSOCK32.dll:21
External func WSOCK32.dll:23
External func WSOCK32.dll:111
Entering DllMain(DLL_PROCESS_ATTACH) for ./cyberimpact.dll
./cyberimpact.dll: 10000000
ppFile name of module 0 requested
./cyberimpact.dll: 10000000
GetProcAddress
HAP_Open
Segemention fault

#include <stdio.h>
#include <dlfcn.h>
#include <wine/windef.h>
#include <wine/winbase.h>
#include <wine/winerror.h>
#include <wine/heap.h>
#include <wine/pe_image.h>
#include <wine/module.h>
#include <wine/debugtools.h>

int main(void)
{
    HMODULE *mi_dll;
    printf("LoadLibraryA\n");
    mi_dll=LoadLibraryA("./cyberimpact.dll");
    if(!mi_dll)
    {
	printf("La puta mi_dll\n");
	return -1;
    }
    printf("GetProcAddress\n");
    GetProcAddress(mi_dll,"HAP_Open");
    printf("FreeLibrary(mi_dll)\n");
    FreeLibrary(mi_dll);

    printf("No hubo problemas\n");
    return 0;
}

#include <stdio.h>
#include <dlfcn.h>
#include <wine/windef.h>
#include <wine/winbase.h>
#include <wine/winerror.h>
#include <wine/heap.h>
#include <wine/pe_image.h>
#include <wine/module.h>
#include <wine/debugtools.h>

/**************************************************************************/
/*************************************************************************/
/**************  Not interesting stuff. Struct definitions **************/
/**************************************************************************/
/*************************************************************************/

status_type *(*HAP_Open)(MPC_communication_struct_type **Haptic_ID_in, char *deviceName, char *deviceFilename);

int main(void)
{
    HMODULE *mi_dll;
    MPC_communication_struct_type *HAPDevice=NULL;

    printf("LoadLibraryA\n");

    mi_dll=LoadLibraryA("/home/jose/dw/libloader/cyberimpact.dll");

    if(!mi_dll)
    {
	printf("La puta mi_dll\n");
	return -1;
    }
    printf("GetProcAddress\n");
    HAP_Open = (status_type *(*))GetProcAddress(mi_dll,"HAP_Open");

    printf("HAP_Open\n");
    HAP_Open(&HAPDevice,"CyberImpactJoystick3" , "/home/jose/dw/libloader/HAPTIC.DEV");

    printf("FreeLibrary\n");
    if(FreeLibrary(mi_dll)==0)
	printf("Hubo problemas\n");

    printf("No hubo problemas\n");

    return 0;
}

[Avifile]Libloader and native dll's

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