[MMIXER] Cleanup mixer notifications opened by an application when it is closed.

CORE-10735 #comment Please retest.

svn path=/trunk/; revision=75183

reactos/drivers/wdm/audio/legacy/wdmaud/control.c

@@ -166,11 +166,8 @@ WdmAudIoctlClose(
         }
         else if (ClientInfo->hPins[Index].Handle == DeviceInfo->hDevice && ClientInfo->hPins[Index].Type == MIXER_DEVICE_TYPE)
         {
-            if (ClientInfo->hPins[Index].NotifyEvent)
+            DPRINT1("Closing mixer %p\n", DeviceInfo->hDevice);
-            {
+            return WdmAudControlCloseMixer(DeviceObject, Irp, DeviceInfo, ClientInfo, Index);
-                ObDereferenceObject(ClientInfo->hPins[Index].NotifyEvent);
-                ClientInfo->hPins[Index].NotifyEvent = NULL;
-            }
         }
     }
 

reactos/drivers/wdm/audio/legacy/wdmaud/mmixer.c

@@ -471,6 +471,32 @@ WdmAudControlOpenMixer(
     return SetIrpIoStatus(Irp, STATUS_SUCCESS, sizeof(WDMAUD_DEVICE_INFO));
 }
 
+NTSTATUS
+WdmAudControlCloseMixer(
+    IN  PDEVICE_OBJECT DeviceObject,
+    IN  PIRP Irp,
+    IN  PWDMAUD_DEVICE_INFO DeviceInfo,
+    IN  PWDMAUD_CLIENT ClientInfo,
+    IN  ULONG Index)
+{
+    /* Remove event associated to this client */
+    if (MMixerClose(&MixerContext, DeviceInfo->DeviceIndex, ClientInfo, EventCallback))
+    {
+        DPRINT1("Failed to close mixer\n");
+        return SetIrpIoStatus(Irp, STATUS_UNSUCCESSFUL, sizeof(WDMAUD_DEVICE_INFO));
+    }
+
+    /* Dereference event */
+    if (ClientInfo->hPins[Index].NotifyEvent)
+    {
+        ObDereferenceObject(ClientInfo->hPins[Index].NotifyEvent);
+        ClientInfo->hPins[Index].NotifyEvent = NULL;
+    }
+
+    /* FIXME: do we need to free ClientInfo->hPins ? */
+    return SetIrpIoStatus(Irp, STATUS_SUCCESS, sizeof(WDMAUD_DEVICE_INFO));
+}
+
 NTSTATUS
 NTAPI
 WdmAudGetControlDetails(

reactos/drivers/wdm/audio/legacy/wdmaud/wdmaud.h

@@ -128,6 +128,14 @@ WdmAudControlOpenMixer(
     IN  PWDMAUD_DEVICE_INFO DeviceInfo,
     IN  PWDMAUD_CLIENT ClientInfo);
 
+NTSTATUS
+WdmAudControlCloseMixer(
+    IN  PDEVICE_OBJECT DeviceObject,
+    IN  PIRP Irp,
+    IN  PWDMAUD_DEVICE_INFO DeviceInfo,
+    IN  PWDMAUD_CLIENT ClientInfo,
+    IN  ULONG Index);
+
 NTSTATUS
 WdmAudControlOpenWave(
     IN  PDEVICE_OBJECT DeviceObject,

reactos/sdk/lib/drivers/sound/mmixer/controls.c

@@ -1834,17 +1834,19 @@ MMixerAddEvent(
     IN PMIXER_EVENT MixerEventRoutine)
 {
     //KSE_NODE Property;
-    PEVENT_NOTIFICATION_ENTRY EventData;
+    //KSEVENTDATA EventData
     //ULONG BytesReturned;
     //MIXER_STATUS Status;
+    PEVENT_NOTIFICATION_ENTRY EventNotification;
 
-    EventData = (PEVENT_NOTIFICATION_ENTRY)MixerContext->AllocEventData(sizeof(EVENT_NOTIFICATION_ENTRY));
+    EventNotification = (PEVENT_NOTIFICATION_ENTRY)MixerContext->Alloc(sizeof(EVENT_NOTIFICATION_ENTRY));
-    if (!EventData)
+    if (!EventNotification)
     {
         /* not enough memory */
         return MM_STATUS_NO_MEMORY;
     }
 
+    /* FIXME: what is it supposed to happen with KSEVENTDATA ? */
 #if 0
     /* setup request */
     Property.Event.Set = KSEVENTSETID_AudioControlChange;
@@ -1864,10 +1866,39 @@ MMixerAddEvent(
 #endif
 
     /* initialize notification entry */
-    EventData->MixerEventContext = MixerEventContext;
+    EventNotification->MixerEventContext = MixerEventContext;
-    EventData->MixerEventRoutine = MixerEventRoutine;
+    EventNotification->MixerEventRoutine = MixerEventRoutine;
 
     /* store event */
-    InsertTailList(&MixerInfo->EventList, &EventData->Entry);
+    InsertTailList(&MixerInfo->EventList, &EventNotification->Entry);
+    return MM_STATUS_SUCCESS;
+}
+
+MIXER_STATUS
+MMixerRemoveEvent(
+    IN PMIXER_CONTEXT MixerContext,
+    IN OUT LPMIXER_INFO MixerInfo,
+    IN PVOID MixerEventContext,
+    IN PMIXER_EVENT MixerEventRoutine)
+{
+    PLIST_ENTRY EventList;
+    PEVENT_NOTIFICATION_ENTRY NotificationEntry; 
+
+    /* Lookup through mixers */
+    EventList = MixerInfo->EventList.Flink;
+    while(EventList != &MixerInfo->EventList)
+    {
+        NotificationEntry = CONTAINING_RECORD(EventList, EVENT_NOTIFICATION_ENTRY, Entry);
+        EventList = EventList->Flink;
+        /* TODO: find a better way to identify an event ? */
+        if(NotificationEntry->MixerEventRoutine == MixerEventRoutine &&
+                NotificationEntry->MixerEventContext == MixerEventContext)
+        {
+            DPRINT1("Freeing entry %p\n", NotificationEntry);
+            /* We found the event to remove */
+            RemoveEntryList(&NotificationEntry->Entry);
+            MixerContext->Free(NotificationEntry);
+        }
+    }
     return MM_STATUS_SUCCESS;
 }

reactos/sdk/lib/drivers/sound/mmixer/mixer.c

@@ -112,6 +112,39 @@ MMixerOpen(
     return MM_STATUS_SUCCESS;
 }
 
+MIXER_STATUS
+MMixerClose(
+    IN PMIXER_CONTEXT MixerContext,
+    IN ULONG MixerId,
+    IN PVOID MixerEventContext,
+    IN PMIXER_EVENT MixerEventRoutine)
+{
+    MIXER_STATUS Status;
+    LPMIXER_INFO MixerInfo;
+
+    /* verify mixer context */
+    Status = MMixerVerifyContext(MixerContext);
+
+    if (Status != MM_STATUS_SUCCESS)
+    {
+        /* invalid context passed */
+        DPRINT1("invalid context\n");
+        return Status;
+    }
+
+    /* get mixer info */
+    MixerInfo = MMixerGetMixerInfoByIndex(MixerContext, MixerId);
+    if (!MixerInfo)
+    {
+        /* invalid mixer id */
+        DPRINT1("invalid mixer id %lu\n", MixerId);
+        return MM_STATUS_INVALID_PARAMETER;
+    }
+
+    /* remove event from list */
+    return MMixerRemoveEvent(MixerContext, MixerInfo, MixerEventContext, MixerEventRoutine);
+}
+
 MIXER_STATUS
 MMixerGetLineInfo(
     IN PMIXER_CONTEXT MixerContext,

reactos/sdk/lib/drivers/sound/mmixer/mmixer.h

@@ -146,6 +146,13 @@ MMixerOpen(
     IN PMIXER_EVENT MixerEventRoutine,
     OUT PHANDLE MixerHandle);
 
+MIXER_STATUS
+MMixerClose(
+    IN PMIXER_CONTEXT MixerContext,
+    IN ULONG MixerId,
+    IN PVOID MixerEventContext,
+    IN PMIXER_EVENT MixerEventRoutine);
+
 MIXER_STATUS
 MMixerGetLineInfo(
     IN PMIXER_CONTEXT MixerContext,

reactos/sdk/lib/drivers/sound/mmixer/precomp.h

@@ -353,6 +353,13 @@ MMixerAddEvent(
     IN PVOID MixerEvent,
     IN PMIXER_EVENT MixerEventRoutine);
 
+MIXER_STATUS
+MMixerRemoveEvent(
+    IN PMIXER_CONTEXT MixerContext,
+    IN OUT LPMIXER_INFO MixerInfo,
+    IN PVOID MixerEventContext,
+    IN PMIXER_EVENT MixerEventRoutine);
+
 MIXER_STATUS
 MMixerGetDeviceName(
     IN PMIXER_CONTEXT MixerContext,