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Sweden-Number/dlls/mmsystem.dll16/driver.c

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/*
* WINE Drivers functions
*
* Copyright 1994 Martin Ayotte
* Copyright 1998 Marcus Meissner
* Copyright 1999,2000 Eric Pouech
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* TODO:
* - LoadModule count and clean up is not handled correctly (it's not a
* problem as long as FreeLibrary is not working correctly)
*/
#include <stdarg.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "wine/winbase16.h"
#include "wingdi.h"
#include "winuser.h"
#include "wownt32.h"
#include "mmddk.h"
#include "wine/mmsystem16.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(driver);
typedef struct tagWINE_DRIVER
{
/* as usual LPWINE_DRIVER == hDriver32 */
HDRVR16 hDriver16;
HMODULE16 hModule16;
DRIVERPROC16 lpDrvProc;
DWORD dwDriverID;
struct tagWINE_DRIVER* lpPrevItem;
struct tagWINE_DRIVER* lpNextItem;
} WINE_DRIVER, *LPWINE_DRIVER;
static LPWINE_DRIVER lpDrvItemList = NULL;
/**************************************************************************
* DRIVER_GetNumberOfModuleRefs [internal]
*
* Returns the number of open drivers which share the same module.
*/
static WORD DRIVER_GetNumberOfModuleRefs(LPWINE_DRIVER lpNewDrv)
{
LPWINE_DRIVER lpDrv;
WORD count = 0;
for (lpDrv = lpDrvItemList; lpDrv; lpDrv = lpDrv->lpNextItem) {
if (lpDrv->hModule16 == lpNewDrv->hModule16) {
count++;
}
}
return count;
}
/**************************************************************************
* DRIVER_FindFromHDrvr16 [internal]
*
* From a hDrvr being 16 bits, returns the WINE internal structure.
*/
static LPWINE_DRIVER DRIVER_FindFromHDrvr16(HDRVR16 hDrvr)
{
LPWINE_DRIVER lpDrv;
for (lpDrv = lpDrvItemList; lpDrv; lpDrv = lpDrv->lpNextItem) {
if (lpDrv->hDriver16 == hDrvr) {
break;
}
}
return lpDrv;
}
/**************************************************************************
* DRIVER_SendMessage [internal]
*/
static inline LRESULT DRIVER_SendMessage(LPWINE_DRIVER lpDrv, UINT16 msg,
LPARAM lParam1, LPARAM lParam2)
{
WORD args[8];
DWORD ret;
TRACE("Before CallDriverProc proc=%p driverID=%08x wMsg=%04x p1=%08lx p2=%08lx\n",
lpDrv->lpDrvProc, lpDrv->dwDriverID, msg, lParam1, lParam2);
args[7] = HIWORD(lpDrv->dwDriverID);
args[6] = LOWORD(lpDrv->dwDriverID);
args[5] = lpDrv->hDriver16;
args[4] = msg;
args[3] = HIWORD(lParam1);
args[2] = LOWORD(lParam1);
args[1] = HIWORD(lParam2);
args[0] = LOWORD(lParam2);
WOWCallback16Ex( (DWORD)lpDrv->lpDrvProc, WCB16_PASCAL, sizeof(args), args, &ret );
return ret;
}
/**************************************************************************
* DrvSendMessage (MMSYSTEM.1102)
*/
LRESULT WINAPI DrvSendMessage16(HDRVR16 hDriver, UINT16 msg, LPARAM lParam1, LPARAM lParam2)
{
LPWINE_DRIVER lpDrv;
LRESULT retval = 0;
TRACE("(%04x, %04X, %08lX, %08lX)\n", hDriver, msg, lParam1, lParam2);
if ((lpDrv = DRIVER_FindFromHDrvr16(hDriver)) != NULL) {
retval = DRIVER_SendMessage(lpDrv, msg, lParam1, lParam2);
} else {
WARN("Bad driver handle %u\n", hDriver);
}
TRACE("retval = %ld\n", retval);
return retval;
}
/**************************************************************************
* DRIVER_RemoveFromList [internal]
*
* Generates all the logic to handle driver closure / deletion
* Removes a driver struct to the list of open drivers.
*/
static BOOL DRIVER_RemoveFromList(LPWINE_DRIVER lpDrv)
{
lpDrv->dwDriverID = 0;
if (DRIVER_GetNumberOfModuleRefs(lpDrv) == 1) {
DRIVER_SendMessage(lpDrv, DRV_DISABLE, 0L, 0L);
DRIVER_SendMessage(lpDrv, DRV_FREE, 0L, 0L);
}
if (lpDrv->lpPrevItem)
lpDrv->lpPrevItem->lpNextItem = lpDrv->lpNextItem;
else
lpDrvItemList = lpDrv->lpNextItem;
if (lpDrv->lpNextItem)
lpDrv->lpNextItem->lpPrevItem = lpDrv->lpPrevItem;
return TRUE;
}
/**************************************************************************
* DRIVER_AddToList [internal]
*
* Adds a driver struct to the list of open drivers.
* Generates all the logic to handle driver creation / open.
*/
static BOOL DRIVER_AddToList(LPWINE_DRIVER lpNewDrv, LPARAM lParam1, LPARAM lParam2)
{
/* First driver to be loaded for this module, need to load correctly the module */
if (DRIVER_GetNumberOfModuleRefs(lpNewDrv) == 0) {
if (DRIVER_SendMessage(lpNewDrv, DRV_LOAD, 0L, 0L) != DRV_SUCCESS) {
TRACE("DRV_LOAD failed on driver %p\n", lpNewDrv);
return FALSE;
}
/* returned value is not checked */
DRIVER_SendMessage(lpNewDrv, DRV_ENABLE, 0L, 0L);
}
lpNewDrv->lpNextItem = NULL;
if (lpDrvItemList == NULL) {
lpDrvItemList = lpNewDrv;
lpNewDrv->lpPrevItem = NULL;
} else {
LPWINE_DRIVER lpDrv = lpDrvItemList; /* find end of list */
while (lpDrv->lpNextItem != NULL)
lpDrv = lpDrv->lpNextItem;
lpDrv->lpNextItem = lpNewDrv;
lpNewDrv->lpPrevItem = lpDrv;
}
/* Now just open a new instance of a driver on this module */
lpNewDrv->dwDriverID = DRIVER_SendMessage(lpNewDrv, DRV_OPEN, lParam1, lParam2);
if (lpNewDrv->dwDriverID == 0) {
TRACE("DRV_OPEN failed on driver %p\n", lpNewDrv);
DRIVER_RemoveFromList(lpNewDrv);
return FALSE;
}
return TRUE;
}
/**************************************************************************
* DRIVER_TryOpenDriver16 [internal]
*
* Tries to load a 16 bit driver whose DLL's (module) name is lpFileName.
*/
static LPWINE_DRIVER DRIVER_TryOpenDriver16(LPCSTR lpFileName, LPARAM lParam2)
{
static WORD DRIVER_hDrvr16Counter /* = 0 */;
LPWINE_DRIVER lpDrv = NULL;
HMODULE16 hModule;
DRIVERPROC16 lpProc;
LPSTR ptr;
TRACE("('%s', %08lX);\n", lpFileName, lParam2);
if (strlen(lpFileName) < 1) return lpDrv;
if ((ptr = strchr(lpFileName, ' ')) != NULL) {
*ptr++ = '\0';
while (*ptr == ' ') ptr++;
if (*ptr == '\0') ptr = NULL;
}
if ((hModule = LoadLibrary16(lpFileName)) < 32) goto exit;
if ((lpProc = (DRIVERPROC16)GetProcAddress16(hModule, "DRIVERPROC")) == NULL)
goto exit;
if ((lpDrv = HeapAlloc(GetProcessHeap(), 0, sizeof(WINE_DRIVER))) == NULL)
goto exit;
lpDrv->dwDriverID = 0;
while (DRIVER_FindFromHDrvr16(++DRIVER_hDrvr16Counter));
lpDrv->hDriver16 = DRIVER_hDrvr16Counter;
lpDrv->hModule16 = hModule;
lpDrv->lpDrvProc = lpProc;
if (!DRIVER_AddToList(lpDrv, (LPARAM)ptr, lParam2)) goto exit;
return lpDrv;
exit:
TRACE("Unable to load 16 bit module (%s): %04x\n", lpFileName, hModule);
if (hModule >= 32) FreeLibrary16(hModule);
HeapFree(GetProcessHeap(), 0, lpDrv);
return NULL;
}
/**************************************************************************
* DrvOpen (MMSYSTEM.1100)
*/
HDRVR16 WINAPI DrvOpen16(LPCSTR lpDriverName, LPCSTR lpSectionName, LPARAM lParam2)
{
LPWINE_DRIVER lpDrv = NULL;
char drvName[128];
TRACE("(%s, %s, %08lX);\n", debugstr_a(lpDriverName), debugstr_a(lpSectionName), lParam2);
if (!lpDriverName || !*lpDriverName) return 0;
if (lpSectionName == NULL) {
strcpy(drvName, lpDriverName);
if ((lpDrv = DRIVER_TryOpenDriver16(drvName, lParam2)))
goto the_end;
/* in case hDriver is NULL, search in Drivers section */
lpSectionName = "Drivers";
}
if (GetPrivateProfileStringA(lpSectionName, lpDriverName, "",
drvName, sizeof(drvName), "SYSTEM.INI") > 0) {
lpDrv = DRIVER_TryOpenDriver16(drvName, lParam2);
}
if (!lpDrv) {
TRACE("Failed to open driver %s from system.ini file, section %s\n", debugstr_a(lpDriverName), debugstr_a(lpSectionName));
return 0;
}
the_end:
TRACE("=> %04x / %p\n", lpDrv->hDriver16, lpDrv);
return lpDrv->hDriver16;
}
/**************************************************************************
* DrvClose16 (MMSYSTEM.1101)
*/
LRESULT WINAPI DrvClose16(HDRVR16 hDrvr, LPARAM lParam1, LPARAM lParam2)
{
LPWINE_DRIVER lpDrv;
TRACE("(%04x, %08lX, %08lX);\n", hDrvr, lParam1, lParam2);
if ((lpDrv = DRIVER_FindFromHDrvr16(hDrvr)) != NULL) {
DRIVER_SendMessage(lpDrv, DRV_CLOSE, lParam1, lParam2);
if (DRIVER_RemoveFromList(lpDrv)) {
HeapFree(GetProcessHeap(), 0, lpDrv);
return TRUE;
}
}
WARN("Failed to close driver\n");
return FALSE;
}
/**************************************************************************
* DrvGetModuleHandle (MMSYSTEM.1103)
*/
HMODULE16 WINAPI DrvGetModuleHandle16(HDRVR16 hDrvr)
{
LPWINE_DRIVER lpDrv;
HMODULE16 hModule = 0;
TRACE("(%04x);\n", hDrvr);
if ((lpDrv = DRIVER_FindFromHDrvr16(hDrvr)) != NULL) {
hModule = lpDrv->hModule16;
}
TRACE("=> %04x\n", hModule);
return hModule;
}
/**************************************************************************
* DrvDefDriverProc (MMSYSTEM.1104)
*/
LRESULT WINAPI DrvDefDriverProc16(DWORD dwDevID, HDRVR16 hDriv, UINT16 wMsg,
LPARAM lParam1, LPARAM lParam2)
{
TRACE("devID=0x%08x hDrv=0x%04x wMsg=%04x lP1=0x%08lx lP2=0x%08lx\n",
dwDevID, hDriv, wMsg, lParam1, lParam2);
switch(wMsg) {
case DRV_LOAD:
case DRV_FREE:
case DRV_ENABLE:
case DRV_DISABLE:
return (LRESULT)1L;
case DRV_OPEN:
case DRV_CLOSE:
case DRV_QUERYCONFIGURE:
return (LRESULT)0L;
case DRV_CONFIGURE:
MessageBoxA(0, "Driver isn't configurable !", "Wine Driver", MB_OK);
return (LRESULT)0L;
case DRV_INSTALL:
case DRV_REMOVE:
return DRV_SUCCESS;
default:
return (LRESULT)0L;
}
}
/**************************************************************************
* DriverProc (MMSYSTEM.6)
*/
LRESULT WINAPI DriverProc16(DWORD dwDevID, HDRVR16 hDrv, WORD wMsg,
DWORD dwParam1, DWORD dwParam2)
{
return DrvDefDriverProc16(dwDevID, hDrv, wMsg, dwParam1, dwParam2);
}
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