380 lines
11 KiB
C
380 lines
11 KiB
C
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/*
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drvproc.c
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contains MMSYSTEMs DriverProc
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Copyright (c) Microsoft Corporation 1990. All rights reserved
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*/
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#include <windows.h>
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#include <mmsysver.h>
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#include "mmsystem.h"
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#include "mmsysi.h"
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#include "drvr.h"
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#include "mmioi.h"
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extern IOProcMapEntry NEAR * gIOProcMapHead; // in MMIO.C
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/****************************************************************************
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internal prototypes
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****************************************************************************/
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static void FAR PASCAL SetPrivateProfileInt(LPSTR szSection, LPSTR szKey, int i, LPSTR szIniFile);
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static BYTE fFirstTime=TRUE; // First enable
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extern BOOL FAR PASCAL DrvLoad(void); // in init.c
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extern BOOL FAR PASCAL DrvFree(void);
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extern char far szStartupSound[]; // in mmwnd.c
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static SZCODE szExitSound[] = "SystemExit";
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#ifdef DEBUG_RETAIL
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extern char far szMMSystem[];
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extern char far szSystemIni[];
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extern char far szDebugOutput[];
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extern char far szMci[];
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// extern WORD fDebugOutput;
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extern int DebugmciSendCommand; // in MCI.C
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#ifdef DEBUG
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extern char far szDebug[];
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extern WORD fDebug;
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#endif
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#endif
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void NEAR PASCAL AppExit(HTASK hTask, BOOL fNormalExit);
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/*****************************************************************************
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*
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* @doc INTERNAL
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*
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* @api LRESULT | DriverProc | This is the standard DLL entry point. It is
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* called from user (3.1) or mmsound.drv (3.0) when MMSYSTEM.DLL is
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* loaded, enabled, or disabled.
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*
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****************************************************************************/
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LRESULT CALLBACK
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DriverProc(
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DWORD dwDriver,
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HDRVR hDriver,
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UINT wMessage,
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LPARAM lParam1,
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LPARAM lParam2
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)
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{
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switch (wMessage)
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{
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case DRV_LOAD:
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//
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// first load message, initialize mmsystem.
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// sent from USER when loading drivers from drivers= line
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//
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if (fFirstTime)
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return (LRESULT)(LONG)DrvLoad();
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//
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// a normal load message, a app is trying to open us
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// with OpenDriver()
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//
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break; // return success all other times (1L)
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case DRV_FREE:
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//
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// a free message, this is send just before the DLL is unloaded
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// by the driver interface.
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//
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// sent by user just before system exit, after sending
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// the DRV_DISABLE message.
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//
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DrvFree();
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break; // return success (1L)
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case DRV_OPEN: // FALL-THROUGH
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case DRV_CLOSE:
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break; // return success (1L)
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case DRV_ENABLE:
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DOUT("MMSYSTEM: Enable\r\n");
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fFirstTime = FALSE;
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break; // return success (1L)
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case DRV_DISABLE:
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DOUT("MMSYSTEM: Disable\r\n");
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break; // return success (1L)
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//
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// sent when a application is terminating
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//
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// lParam1:
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// DRVEA_ABNORMALEXIT
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// DRVEA_NORMALEXIT
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//
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case DRV_EXITAPPLICATION:
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AppExit(GetCurrentTask(), (BOOL)lParam1 == DRVEA_NORMALEXIT);
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break;
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case DRV_EXITSESSION:
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sndPlaySound(szExitSound, SND_SYNC | SND_NODEFAULT);
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break;
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#ifdef DEBUG_RETAIL
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case MM_GET_DEBUG:
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break;
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case MM_GET_DEBUGOUT:
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return (LRESULT)(LONG)fDebugOutput;
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case MM_SET_DEBUGOUT:
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fDebugOutput = (BYTE)(LONG)lParam1;
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SetPrivateProfileInt(szMMSystem,szDebugOutput,fDebugOutput,szSystemIni);
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break;
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case MM_GET_MCI_DEBUG:
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return (LRESULT)(LONG)DebugmciSendCommand;
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case MM_SET_MCI_DEBUG:
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DebugmciSendCommand = (WORD)(LONG)lParam1;
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SetPrivateProfileInt(szMMSystem,szMci,DebugmciSendCommand,szSystemIni);
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break;
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#ifdef DEBUG
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case MM_GET_MM_DEBUG:
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return (LRESULT)(LONG)fDebug;
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case MM_SET_MM_DEBUG:
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fDebug = (BYTE)(LONG)lParam1;
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SetPrivateProfileInt(szMMSystem,szDebug,fDebug,szSystemIni);
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break;
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#ifdef DEBUG
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case MM_DRV_RESTART:
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break;
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#endif
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case MM_HINFO_MCI:
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if ((HLOCAL)(LONG)lParam2 == (HLOCAL)NULL)
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return (LRESULT)(LONG)MCI_wNextDeviceID;
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if (MCI_VALID_DEVICE_ID((UINT)(LONG)lParam1))
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{
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*(LPMCI_DEVICE_NODE)lParam2 = *MCI_lpDeviceList[(UINT)(LONG)lParam1];
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break;
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}
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return (LRESULT)FALSE;
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case MM_HINFO_NEXT:
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if ((HLOCAL)(LONG)lParam1 == (HLOCAL)NULL)
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return (LRESULT)(LONG)(UINT)GetHandleFirst();
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else
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return (LRESULT)(LONG)(UINT)GetHandleNext((HLOCAL)(LONG)lParam1);
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case MM_HINFO_TASK:
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return (LRESULT)(LONG)(UINT)GetHandleOwner((HLOCAL)(LONG)lParam1);
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case MM_HINFO_TYPE:
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return GetHandleType((HLOCAL)(LONG)lParam1);
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#endif // ifdef DEBUG
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#endif // ifdef DEBUG_RETAIL
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default:
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return DefDriverProc(dwDriver, hDriver, wMessage, lParam1, lParam2);
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}
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return (LRESULT)1L;
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}
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/*****************************************************************************
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* @doc INTERNAL
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*
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* @func void | AppExit |
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* a application is exiting, free any MMSYS resources it may own
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*
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****************************************************************************/
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void NEAR PASCAL AppExit(HTASK hTask, BOOL fNormalExit)
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{
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HLOCAL h;
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HLOCAL hNext;
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WORD wDebugFlags;
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UINT wDeviceID;
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UINT cFree;
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UINT cHeap;
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UINT err;
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if (hdrvDestroy != (HLOCAL)-1)
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{
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DOUT("MMSYSTEM: Hey! AppExit has been re-entered!\r\n");
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}
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#ifdef DEBUG
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if (!fNormalExit)
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ROUT("MMSYSTEM: Abnormal app termination");
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#endif
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//
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// either log a error or a warning depending on wether it was
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// a normal exit or not.
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//
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if (fNormalExit)
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wDebugFlags = DBF_MMSYSTEM | DBF_ERROR;
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else
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wDebugFlags = DBF_MMSYSTEM | DBF_WARNING; // DBF_TRACE?
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//
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// now free MCI devices.
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//
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for (wDeviceID=1; wDeviceID<MCI_wNextDeviceID; wDeviceID++)
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{
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if (MCI_VALID_DEVICE_ID(wDeviceID) && MCI_lpDeviceList[wDeviceID]->hCreatorTask == hTask)
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{
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DebugErr2(wDebugFlags, "MCI device %ls (%d) not released.", MCI_lpDeviceList[wDeviceID]->lpstrInstallName, wDeviceID);
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//
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// clear these to force MCI to close the device
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//
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MCI_lpDeviceList[wDeviceID]->dwMCIFlags &= ~MCINODE_ISCLOSING;
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MCI_lpDeviceList[wDeviceID]->dwMCIFlags &= ~MCINODE_ISAUTOCLOSING;
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err = (UINT)mciSendCommand(wDeviceID, MCI_CLOSE, NULL, NULL);
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#ifdef DEBUG
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if (err != 0)
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DebugErr1(DBF_WARNING, "Unable to close MCI device (err = %04X).", err);
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#endif
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}
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}
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//
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// free all WAVE/MIDI/MMIO handles
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//
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start_over:
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for (h=GetHandleFirst(); h; h=hNext)
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{
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hNext = GetHandleNext(h);
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if (GetHandleOwner(h) == hTask)
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{
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//
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// hack for the wave/midi mapper, always free handle's backward.
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//
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if (hNext && GetHandleOwner(hNext) == hTask)
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continue;
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//
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// do this so even if the close fails we will not
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// find it again.
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//
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SetHandleOwner(h, NULL);
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//
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// set the hdrvDestroy global so DriverCallback will not
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// do anything for this device
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//
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hdrvDestroy = h;
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switch(GetHandleType(h))
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{
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case TYPE_WAVEOUT:
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DebugErr1(wDebugFlags, "WaveOut handle (%04X) was not released.", h);
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waveOutReset((HWAVEOUT)h);
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err = waveOutClose((HWAVEOUT)h);
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break;
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case TYPE_WAVEIN:
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DebugErr1(wDebugFlags, "WaveIn handle (%04X) was not released.", h);
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waveInStop((HWAVEIN)h);
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waveInReset((HWAVEIN)h);
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err = waveInClose((HWAVEIN)h);
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break;
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case TYPE_MIDIOUT:
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DebugErr1(wDebugFlags, "MidiOut handle (%04X) was not released.", h);
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midiOutReset((HMIDIOUT)h);
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err = midiOutClose((HMIDIOUT)h);
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break;
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case TYPE_MIDIIN:
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DebugErr1(wDebugFlags, "MidiIn handle (%04X) was not released.", h);
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midiInStop((HMIDIIN)h);
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midiInReset((HMIDIIN)h);
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err = midiInClose((HMIDIIN)h);
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break;
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case TYPE_MMIO:
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DebugErr1(wDebugFlags, "MMIO handle (%04X) was not released.", h);
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err = mmioClose((HMMIO)h, 0);
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break;
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case TYPE_IOPROC:
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DebugErr1(wDebugFlags, "MMIO handler '%4.4ls' not removed.", (LPSTR)&((IOProcMapEntry*)h)->fccIOProc);
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err = !mmioInstallIOProc(((IOProcMapEntry*)h)->fccIOProc, NULL, MMIO_REMOVEPROC);
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break;
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}
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#ifdef DEBUG
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if (err != 0)
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DebugErr1(DBF_WARNING, "Unable to close handle (err = %04X).", err);
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#endif
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//
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// unset hdrvDestroy so DriverCallback will work.
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// some hosebag drivers (like the TIMER driver)
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// may pass NULL as their driver handle.
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// so dont set it to NULL.
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//
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hdrvDestroy = (HLOCAL)-1;
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//
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// the reason we start over is because a single free may cause
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// multiple free's (ie MIDIMAPPER has another HMIDI open, ...)
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//
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goto start_over;
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}
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}
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//
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// what about timeSetEvent()!!!???
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//
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// any outstanding timer events till be killed by the timer driver
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// it self.
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//
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mciAppExit( hTask );
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// shrink our heap, down to minimal size.
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if ((cFree = LocalCountFree()) > 1024)
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{
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cHeap = LocalHeapSize() - (cFree - 512);
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LocalShrink(NULL, cHeap);
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DPRINTF(("MMSYSTEM: Shrinking the heap (%d)\r\n", cHeap));
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}
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}
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#ifdef DEBUG_RETAIL
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/*****************************************************************************
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* @doc INTERNAL
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*
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* @func void | SetPrivateProfileInt | windows should have this function
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*
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* @comm used by DriverProc to set debug state in SYSTEM.INI
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*
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****************************************************************************/
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static void FAR PASCAL SetPrivateProfileInt(LPSTR szSection, LPSTR szKey, int i, LPSTR szIniFile)
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{
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char ach[32] ;
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if (i != (int)GetPrivateProfileInt(szSection, szKey, ~i, szIniFile))
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{
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wsprintf(ach, "%d", i);
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WritePrivateProfileString(szSection, szKey, ach, szIniFile);
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}
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}
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#endif //ifdef DEBUG_RETAIL
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