[ros-kernel] mmTaskCreate patch - For you sound junkys

[Andrew Greenwood]

That patch will come in handy.

When I was working on sound, I did get stuck with the mm/mmio routines. I
ended up using threads (which is what the mm routines seemed to do
anyway...)


----- Original Message ----- 
From: "Filip Navara" <xnavara at volny.cz>
To: "ReactOS Kernel List" <ros-kernel at reactos.com>
Cc: <pouech-eric at wanadoo.fr>
Sent: Wednesday, July 14, 2004 5:27 PM
Subject: Re: [ros-kernel] mmTaskCreate patch - For you sound junkys


> Steven Edwards wrote:
>
> >If you are interested in getting sound working on ReactOS this patch
> >will let you load the Wine Winmm.dll under Windows NT 4. Our winmm.dll
> >needs to be resync'd with winehq so this patch will apply cleanly but
> >anyone wanting to work on sound could go ahead and hack it in. I would
> >recommend  trying to load Windows mmdrv.dll under ReactOS with our
> >wimmm.dll to see if you can get working sound.
> >
> >Thanks
> >Steven
> >
> >
> Here is more correct version of that patch. It's against the ReactOS
> CVS. I can produce one against Wine CVS on request.
>
> Regards,
> Filip
>
>


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> Index: include/mmddk.h
> ===================================================================
> --- include/mmddk.h (revision 1)
> +++ include/mmddk.h (working copy)
> @@ -449,6 +449,16 @@
>  BOOL WINAPI DriverCallback(DWORD dwCallBack, UINT uFlags, HDRVR hDev,
>          UINT wMsg, DWORD dwUser, DWORD dwParam1, DWORD dwParam2);
>
> +typedef void (*LPTASKCALLBACK)(DWORD dwInst);
> +
> +#define TASKERR_NOTASKSUPPORT 1
> +#define TASKERR_OUTOFMEMORY   2
> +MMRESULT WINAPI mmTaskCreate(LPTASKCALLBACK, HANDLE*, DWORD);
> +void     WINAPI mmTaskBlock(HANDLE);
> +BOOL     WINAPI mmTaskSignal(HANDLE);
> +void     WINAPI mmTaskYield(void);
> +HANDLE   WINAPI mmGetCurrentTask(void);
> +
>  #ifdef __WINESRC__
>  #define  WAVE_DIRECTSOUND               0x0080
>  #endif
> Index: winmm/winmm.spec
> ===================================================================
> --- winmm/winmm.spec (revision 1)
> +++ winmm/winmm.spec (working copy)
> @@ -135,6 +135,7 @@
>  @ stdcall mmioStringToFOURCCW(wstr long)
>  @ stdcall mmioWrite(long ptr long)
>  @ stdcall mmsystemGetVersion()
> +@ stdcall mmTaskCreate(ptr ptr long)
>  @ stdcall sndPlaySoundA(ptr long)
>  @ stdcall sndPlaySoundW(ptr long)
>  @ stdcall timeBeginPeriod(long)
> Index: winmm/winmm.c
> ===================================================================
> --- winmm/winmm.c (revision 1)
> +++ winmm/winmm.c (working copy)
> @@ -102,8 +102,9 @@
>   * inside WINMM_IData */
>          CloseHandle(WINMM_IData->psStopEvent);
>          CloseHandle(WINMM_IData->psLastEvent);
> +        WINMM_IData->cs.DebugInfo = NULL;
>          DeleteCriticalSection(&WINMM_IData->cs);
> - HeapFree(GetProcessHeap(), 0, WINMM_IData);
> +        HeapFree(GetProcessHeap(), 0, WINMM_IData);
>          WINMM_IData = NULL;
>      }
>  }
> @@ -3176,3 +3177,44 @@
>
>      return MMDRV_Message(wmld, uMessage, dwParam1, dwParam2, TRUE);
>  }
> +
> +struct mm_starter
> +{
> +    LPTASKCALLBACK      cb;
> +    DWORD               client;
> +    HANDLE              event;
> +};
> +
> +DWORD WINAPI mmTaskRun(void* pmt)
> +{
> +    struct mm_starter mms;
> +
> +    memcpy(&mms, pmt, sizeof(struct mm_starter));
> +    HeapFree(GetProcessHeap(), 0, pmt);
> +    mms.cb(mms.client);
> +    if (mms.event) SetEvent(mms.event);
> +    return 0;
> +}
> +
> +MMRESULT WINAPI mmTaskCreate(LPTASKCALLBACK cb, HANDLE* ph, DWORD client)
> +{
> +    HANDLE               h;
> +    struct mm_starter   *mms;
> +
> +    mms = HeapAlloc(GetProcessHeap(), 0, sizeof(struct mm_starter));
> +    if (mms == NULL) { return TASKERR_OUTOFMEMORY; }
> +
> +    mms->cb = cb;
> +    mms->client = client;
> +    if (ph) {
> +        mms->event = CreateEvent(NULL, FALSE, FALSE, NULL);
> +    } else {
> +        mms->event = NULL;
> +    }
> +
> +    h = CreateThread(0, 0, mmTaskRun, (LPVOID)&mms, 0, NULL);
> +    if (!h) return TASKERR_OUTOFMEMORY;
> +    if (ph) *ph = mms->event;
> +    CloseHandle(h);
> +    return 0;
> +}
>


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