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Fixed crashes in new joystick code

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This commit is contained in:
Sam Lantinga 2012-11-28 11:52:38 -08:00
parent 732f28216b
commit 556c764047
2 changed files with 50 additions and 30 deletions
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58
src/joystick/windows/SDL_dxjoystick.c
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@ -498,24 +498,6 @@ LRESULT CALLBACK SDL_PrivateJoystickDetectProc(HWND hwnd, UINT message, WPARAM w
}
/* helper func to create a hidden, message only window for the joystick detect thread
*/
HWND CreateHiddenJoystickDetectWindow() {
WNDCLASSEX wincl;
HWND hMessageWindow = 0;
SDL_memset( &wincl, 0x0, sizeof(wincl) );
wincl.hInstance = GetModuleHandle( NULL );
wincl.lpszClassName = L"Message";
wincl.lpfnWndProc = SDL_PrivateJoystickDetectProc; // This function is called by windows
wincl.cbSize = sizeof (WNDCLASSEX);
if (!RegisterClassEx (&wincl))
return 0;
hMessageWindow = (HWND)CreateWindowEx( 0, L"Message", NULL, 0, 0, 0, 0, 0, HWND_MESSAGE, NULL, NULL, NULL );
return hMessageWindow;
}
DEFINE_GUID(GUID_DEVINTERFACE_USB_DEVICE, 0xA5DCBF10L, 0x6530, 0x11D2, 0x90, 0x1F, 0x00, \
0xC0, 0x4F, 0xB9, 0x51, 0xED);
@ -529,12 +511,26 @@ SDL_JoystickThread(void *_data)
HDEVNOTIFY hNotify = 0;
DEV_BROADCAST_DEVICEINTERFACE dbh;
SDL_bool bOpenedXInputDevices[4];
WNDCLASSEX wincl;
SDL_memset( bOpenedXInputDevices, 0x0, sizeof(bOpenedXInputDevices) );
result = WIN_CoInitialize();
messageWindow = CreateHiddenJoystickDetectWindow();
SDL_memset( &wincl, 0x0, sizeof(wincl) );
wincl.hInstance = GetModuleHandle( NULL );
wincl.lpszClassName = L"Message";
wincl.lpfnWndProc = SDL_PrivateJoystickDetectProc; // This function is called by windows
wincl.cbSize = sizeof (WNDCLASSEX);
if (!RegisterClassEx (&wincl))
{
SDL_SetError("Failed to create register class for joystick autodetect.",
GetLastError());
return -1;
}
messageWindow = (HWND)CreateWindowEx( 0, L"Message", NULL, 0, 0, 0, 0, 0, HWND_MESSAGE, NULL, NULL, NULL );
if ( !messageWindow )
{
SDL_SetError("Failed to create message window for joystick autodetect.",
@ -611,6 +607,8 @@ SDL_JoystickThread(void *_data)
if ( messageWindow )
DestroyWindow( messageWindow );
UnregisterClass( wincl.lpszClassName, wincl.hInstance );
messageWindow = 0;
WIN_CoUninitialize();
return 1;
@ -720,22 +718,25 @@ static BOOL CALLBACK
EnumJoysticksCallback(const DIDEVICEINSTANCE * pdidInstance, VOID * pContext)
{
JoyStick_DeviceData *pNewJoystick;
JoyStick_DeviceData *pPrevJoystick = NULL;
SDL_bool bXInputDevice;
pNewJoystick = *(JoyStick_DeviceData **)pContext;
while ( pNewJoystick )
{
if ( !SDL_memcmp( &pNewJoystick->dxdevice.guidInstance, &pdidInstance->guidInstance, sizeof(pNewJoystick->dxdevice.guidInstance) ) )
{
if ( SYS_Joystick )
{
pNewJoystick->pNext = SYS_Joystick;
}
SYS_Joystick = pNewJoystick;
/* if we are replacing the front of the list then update it */
if ( pNewJoystick == *(JoyStick_DeviceData **)pContext )
{
*(JoyStick_DeviceData **)pContext = pNewJoystick->pNext;
}
else if ( pPrevJoystick )
{
pPrevJoystick->pNext = pNewJoystick->pNext;
}
pNewJoystick->pNext = SYS_Joystick;
SYS_Joystick = pNewJoystick;
s_pKnownJoystickGUIDs[ s_iNewGUID ] = pdidInstance->guidInstance;
s_iNewGUID++;
@ -745,6 +746,7 @@ static BOOL CALLBACK
return DIENUM_STOP;
}
pPrevJoystick = pNewJoystick;
pNewJoystick = pNewJoystick->pNext;
}
@ -756,17 +758,17 @@ static BOOL CALLBACK
if ( bXInputDevice )
{
SDL_memset(&(pNewJoystick->dxdevice), 0x0,
sizeof(DIDEVICEINSTANCE));
pNewJoystick->bXInputDevice = SDL_TRUE;
pNewJoystick->XInputUserId = INVALID_XINPUT_USERID;
}
else
{
pNewJoystick->bXInputDevice = SDL_FALSE;
SDL_memcpy(&(pNewJoystick->dxdevice), pdidInstance,
sizeof(DIDEVICEINSTANCE));
}
SDL_memcpy(&(pNewJoystick->dxdevice), pdidInstance,
sizeof(DIDEVICEINSTANCE));
pNewJoystick->joystickname = WIN_StringToUTF8(pdidInstance->tszProductName);
pNewJoystick->send_add_event = 1;
pNewJoystick->nInstanceID = ++s_nInstanceID;