/***************************************************************************
* DriverProc - The entry point for an installable driver.
*
* PARAMETERS
* dwDriverId: For most messages, <dwDriverId> is the DWORD
* value that the driver returns in response to a <DRV_OPEN> message.
* Each time that the driver is opened, through the <DrvOpen> API,
* the driver receives a <DRV_OPEN> message and can return an
* arbitrary, non-zero value. The installable driver interface
* saves this value and returns a unique driver handle to the
* application. Whenever the application sends a message to the
* driver using the driver handle, the interface routes the message
* to this entry point and passes the corresponding <dwDriverId>.
* This mechanism allows the driver to use the same or different
* identifiers for multiple opens but ensures that driver handles
* are unique at the application interface layer.
*
* The following messages are not related to a particular open
* instance of the driver. For these messages, the dwDriverId
* will always be zero.
*
* DRV_LOAD, DRV_FREE, DRV_ENABLE, DRV_DISABLE, DRV_OPEN
*
* hDriver: This is the handle returned to the application by the
* driver interface.
*
* uiMessage: The requested action to be performed. Message
* values below <DRV_RESERVED> are used for globally defined messages.
* Message values from <DRV_RESERVED> to <DRV_USER> are used for
* defined driver protocols. Messages above <DRV_USER> are used
* for driver specific messages.
*
* lParam1: Data for this message. Defined separately for
* each message
*
* lParam2: Data for this message. Defined separately for
* each message
*
* RETURNS
* Defined separately for each message.
*
***************************************************************************/
LRESULT PASCAL DriverProc(DWORD_PTR dwDriverID, HDRVR hDriver, UINT uiMessage, LPARAM lParam1, LPARAM lParam2) {
CodecInst* pi = (CodecInst*)dwDriverID;
switch (uiMessage) {
case DRV_LOAD:
return (LRESULT)1L;
case DRV_FREE:
return (LRESULT)1L;
case DRV_OPEN:
return (LRESULT)Open((ICOPEN*) lParam2);
case DRV_CLOSE:
if (pi) Close(pi);
return (LRESULT)1L;
/*********************************************************************
state messages
*********************************************************************/
// cwk
case DRV_QUERYCONFIGURE: // configuration from drivers applet
return (LRESULT)1L;
case DRV_CONFIGURE:
pi->Configure((HWND)lParam1);
return DRV_OK;
case ICM_CONFIGURE:
//
// return ICERR_OK if you will do a configure box, error otherwise
//
if (lParam1 == -1)
return ICERR_OK;
else
return pi->Configure((HWND)lParam1);
case ICM_ABOUT:
return ICERR_UNSUPPORTED;
case ICM_GETSTATE:
return pi->GetState((LPVOID)lParam1, (DWORD)lParam2);
case ICM_SETSTATE:
return pi->SetState((LPVOID)lParam1, (DWORD)lParam2);
case ICM_GETINFO:
return pi->GetInfo((ICINFO*)lParam1, (DWORD)lParam2);
case ICM_GETDEFAULTQUALITY:
if (lParam1) {
*((LPDWORD)lParam1) = 10000;
return ICERR_OK;
}
break;
/*********************************************************************
compression messages
*********************************************************************/
case ICM_COMPRESS_QUERY:
return pi->CompressQuery((LPBITMAPINFOHEADER)lParam1, (LPBITMAPINFOHEADER)lParam2);
case ICM_COMPRESS_BEGIN:
return pi->CompressBegin((LPBITMAPINFOHEADER)lParam1, (LPBITMAPINFOHEADER)lParam2);
case ICM_COMPRESS_GET_FORMAT:
return pi->CompressGetFormat((LPBITMAPINFOHEADER)lParam1, (LPBITMAPINFOHEADER)lParam2);
case ICM_COMPRESS_GET_SIZE:
return pi->CompressGetSize((LPBITMAPINFOHEADER)lParam1, (LPBITMAPINFOHEADER)lParam2);
case ICM_COMPRESS:
return pi->Compress((ICCOMPRESS*)lParam1, (DWORD)lParam2);
case ICM_COMPRESS_END:
return pi->CompressEnd();
/*********************************************************************
decompress messages
*********************************************************************/
case ICM_DECOMPRESS_QUERY:
return pi->DecompressQuery((LPBITMAPINFOHEADER)lParam1, (LPBITMAPINFOHEADER)lParam2);
case ICM_DECOMPRESS_BEGIN:
return pi->DecompressBegin((LPBITMAPINFOHEADER)lParam1, (LPBITMAPINFOHEADER)lParam2);
case ICM_DECOMPRESS_GET_FORMAT:
return pi->DecompressGetFormat((LPBITMAPINFOHEADER)lParam1, (LPBITMAPINFOHEADER)lParam2);
case ICM_DECOMPRESS_GET_PALETTE:
return pi->DecompressGetPalette((LPBITMAPINFOHEADER)lParam1, (LPBITMAPINFOHEADER)lParam2);
case ICM_DECOMPRESS:
return pi->Decompress((ICDECOMPRESS*)lParam1, (DWORD)lParam2);
case ICM_DECOMPRESS_END:
return pi->DecompressEnd();
/*********************************************************************
standard driver messages
*********************************************************************/
case DRV_DISABLE:
case DRV_ENABLE:
return (LRESULT)1L;
case DRV_INSTALL:
case DRV_REMOVE:
return (LRESULT)DRV_OK;
}
if (uiMessage < DRV_USER)
return DefDriverProc(dwDriverID, hDriver, uiMessage, lParam1, lParam2);
return ICERR_UNSUPPORTED;
}
extern "C" void WINAPI Configure(HWND hwnd, HINSTANCE hinst, LPTSTR lpCmdLine, int nCmdShow)
{
CodecInst codec;
codec.Configure(GetDesktopWindow());
}
