/* get device extension */
DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
+
+ if (DeviceExtension->FileObject == NULL)
+ {
+ /* find available sysaudio devices */
+ Status = WdmAudOpenSysAudioDevices(DeviceObject, DeviceExtension);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT1("WdmAudOpenSysAudioDevices failed with %x\n", Status);
+ return;
+ }
+ }
+
+
/* get device count */
DeviceCount = GetSysAudioDeviceCount(DeviceObject);
NTSTATUS
NTAPI
-WdmAudInstallDevice(
- IN PDRIVER_OBJECT DriverObject)
+WdmaudAddDevice(
+ IN PDRIVER_OBJECT DriverObject,
+ IN PDEVICE_OBJECT PhysicalDeviceObject)
{
- UNICODE_STRING DeviceName = RTL_CONSTANT_STRING(L"\\Device\\wdmaud");
- UNICODE_STRING SymlinkName = RTL_CONSTANT_STRING(L"\\DosDevices\\wdmaud");
PDEVICE_OBJECT DeviceObject;
NTSTATUS Status;
PWDMAUD_DEVICE_EXTENSION DeviceExtension;
- DPRINT("WdmAudInstallDevice called\n");
+ DPRINT("WdmaudAddDevice called\n");
Status = IoCreateDevice(DriverObject,
sizeof(WDMAUD_DEVICE_EXTENSION),
- &DeviceName,
+ NULL,
FILE_DEVICE_KS,
0,
FALSE,
}
/* register device interfaces */
- Status = WdmAudRegisterDeviceInterface(DeviceObject, DeviceExtension);
+ Status = WdmAudRegisterDeviceInterface(PhysicalDeviceObject, DeviceExtension);
if (!NT_SUCCESS(Status))
{
DPRINT1("WdmRegisterDeviceInterface failed with %x\n", Status);
/* initialize timer */
IoInitializeTimer(DeviceObject, WdmAudTimerRoutine, (PVOID)WdmAudTimerRoutine);
- /* find available sysaudio devices */
- Status = WdmAudOpenSysAudioDevices(DeviceObject, DeviceExtension);
- if (!NT_SUCCESS(Status))
- {
- DPRINT1("WdmAudOpenSysAudioDevices failed with %x\n", Status);
- IoDeleteSymbolicLink(&SymlinkName);
- IoDeleteDevice(DeviceObject);
- return Status;
- }
-
/* allocate ks device header */
Status = KsAllocateDeviceHeader(&DeviceExtension->DeviceHeader, 0, NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("KsAllocateDeviceHeader failed with %x\n", Status);
- IoDeleteSymbolicLink(&SymlinkName);
IoDeleteDevice(DeviceObject);
return Status;
}
+ /* attach to device stack */
+ DeviceExtension->NextDeviceObject = IoAttachDeviceToDeviceStack(DeviceObject, PhysicalDeviceObject);
+ KsSetDevicePnpAndBaseObject(DeviceExtension->DeviceHeader, DeviceExtension->NextDeviceObject, DeviceObject);
+
+
/* start the timer */
IoStartTimer(DeviceObject);
NTSTATUS Status;
PIO_STACK_LOCATION IoStack;
PWDMAUD_CLIENT pClient;
- //PWDMAUD_DEVICE_EXTENSION DeviceExtension;
+ PWDMAUD_DEVICE_EXTENSION DeviceExtension;
/* get device extension */
- //DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
+ DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
#if KS_IMPLEMENTED
Status = KsReferenceSoftwareBusObject((KSDEVICE_HEADER)DeviceObject->DeviceExtension);
}
#endif
+ if (DeviceExtension->FileObject == NULL)
+ {
+ /* initialize */
+ WdmAudInitWorkerRoutine(DeviceObject, NULL);
+ }
+
+
Status = WdmAudOpenSysaudio(DeviceObject, &pClient);
if (!NT_SUCCESS(Status))
{
/* found an still open audio pin */
ZwClose(pClient->hPins[Index].Handle);
}
+ WdmAudCloseAllMixers(DeviceObject, pClient, Index);
}
/* free pin array */
Driver->MajorFunction[IRP_MJ_WRITE] = WdmAudReadWrite;
Driver->MajorFunction[IRP_MJ_READ] = WdmAudReadWrite;
Driver->MajorFunction[IRP_MJ_POWER] = KsDefaultDispatchPower;
+ Driver->DriverExtension->AddDevice = WdmaudAddDevice;
- return WdmAudInstallDevice(Driver);
+ return STATUS_SUCCESS;
}