[janderwald] 39178: - Implement enumerating available virtual audio devices and opening them
Author: janderwald Date: Wed Jan 28 09:24:57 2009 New Revision: 39178
URL: http://svn.reactos.org/svn/reactos?rev=39178&view=rev Log: - Implement enumerating available virtual audio devices and opening them
Modified: trunk/reactos/drivers/wdm/audio/legacy/wdmaud/entry.c trunk/reactos/drivers/wdm/audio/legacy/wdmaud/wdmaud.h
Modified: trunk/reactos/drivers/wdm/audio/legacy/wdmaud/entry.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/wdm/audio/legacy/wd... ============================================================================== --- trunk/reactos/drivers/wdm/audio/legacy/wdmaud/entry.c [iso-8859-1] (original) +++ trunk/reactos/drivers/wdm/audio/legacy/wdmaud/entry.c [iso-8859-1] Wed Jan 28 09:24:57 2009 @@ -40,6 +40,8 @@ DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension; RtlZeroMemory(DeviceExtension, sizeof(WDMAUD_DEVICE_EXTENSION));
+ InitializeListHead(&DeviceExtension->SysAudioDeviceList); + Status = KsAllocateDeviceHeader(&DeviceExtension->DeviceHeader, 0, NULL); if (!NT_SUCCESS(Status)) { @@ -91,6 +93,37 @@ }
NTSTATUS +WdmAudOpenSysAudioDevice( + IN LPWSTR DeviceName, + OUT PHANDLE Handle) +{ + UNICODE_STRING SymbolicLink; + OBJECT_ATTRIBUTES ObjectAttributes; + IO_STATUS_BLOCK IoStatusBlock; + NTSTATUS Status; + + RtlInitUnicodeString(&SymbolicLink, DeviceName); + InitializeObjectAttributes(&ObjectAttributes, &SymbolicLink, OBJ_OPENIF | OBJ_KERNEL_HANDLE, NULL, NULL); + + Status = IoCreateFile(Handle, + SYNCHRONIZE | GENERIC_READ | GENERIC_WRITE, + &ObjectAttributes, + &IoStatusBlock, + NULL, + 0, + 0, + FILE_OPEN, + FILE_SYNCHRONOUS_IO_NONALERT, + NULL, + 0, + CreateFileTypeNone, + NULL, + IO_NO_PARAMETER_CHECKING | IO_FORCE_ACCESS_CHECK); + + return Status; +} + +NTSTATUS NTAPI DeviceInterfaceChangeCallback( IN PVOID NotificationStructure, @@ -102,6 +135,72 @@ return STATUS_SUCCESS; }
+NTSTATUS +WdmAudOpenSysAudioDeviceInterfaces( + IN PWDMAUD_DEVICE_EXTENSION DeviceExtension, + IN LPWSTR SymbolicLinkList) +{ + NTSTATUS Status; + HANDLE Handle; + SYSAUDIO_ENTRY * Entry; + UINT Length; + PFILE_OBJECT FileObject; + ULONG Result; + ULONG BytesReturned; + KSPROPERTY KsPropset = {{STATIC_KSPROPSETID_Sysaudio}, KSPROPERTY_SYSAUDIO_DEVICE_DEFAULT, KSPROPERTY_TYPE_SET}; + + while(*SymbolicLinkList) + { + Length = wcslen(SymbolicLinkList) + 1; + Status = WdmAudOpenSysAudioDevice(SymbolicLinkList, &Handle); + if (NT_SUCCESS(Status)) + { + Status = ObReferenceObjectByHandle(Handle, + FILE_READ_DATA | FILE_WRITE_DATA, + IoFileObjectType, + KernelMode, + (PVOID*)&FileObject, + NULL); + + if (!NT_SUCCESS(Status)) + { + DPRINT1("ObReferenceObjectByHandle failed with %x\n", Status); + ZwClose(Handle); + } + + Entry = (SYSAUDIO_ENTRY*)ExAllocatePool(NonPagedPool, sizeof(SYSAUDIO_ENTRY) + Length * sizeof(WCHAR)); + if (!Entry) + { + ZwClose(Handle); + ObDereferenceObject((PVOID)FileObject); + return STATUS_INSUFFICIENT_RESOURCES; + } + + Entry->Handle = Handle; + Entry->SymbolicLink.Length = Length * sizeof(WCHAR); + Entry->SymbolicLink.MaximumLength = Length * sizeof(WCHAR); + Entry->SymbolicLink.Buffer = (LPWSTR) (Entry + 1); + Entry->FileObject = FileObject; + wcscpy(Entry->SymbolicLink.Buffer, SymbolicLinkList); + + InsertTailList(&DeviceExtension->SysAudioDeviceList, &Entry->Entry); + + /* set device as default device */ + KsSynchronousIoControlDevice(FileObject, + KernelMode, + IOCTL_KS_PROPERTY, + (PVOID)&KsPropset, + sizeof(KSPROPERTY), + (PVOID)&Result, + sizeof(ULONG), + &BytesReturned); + + DeviceExtension->NumSysAudioDevices++; + } + SymbolicLinkList += Length; + } + return STATUS_SUCCESS; +}
NTSTATUS NTAPI @@ -110,6 +209,7 @@ IN PIRP Irp) { NTSTATUS Status; + LPWSTR SymbolicLinkList; PWDMAUD_DEVICE_EXTENSION DeviceExtension;
DPRINT1("WdmAudCreate\n"); @@ -125,6 +225,18 @@ return Status; } #endif + + Status = IoGetDeviceInterfaces(&KSCATEGORY_SYSAUDIO, + NULL, + 0, + &SymbolicLinkList); + + if (NT_SUCCESS(Status)) + { + WdmAudOpenSysAudioDeviceInterfaces(DeviceExtension, SymbolicLinkList); + ExFreePool(SymbolicLinkList); + } +
Status = IoRegisterPlugPlayNotification(EventCategoryDeviceInterfaceChange, PNPNOTIFY_DEVICE_INTERFACE_INCLUDE_EXISTING_INTERFACES,
Modified: trunk/reactos/drivers/wdm/audio/legacy/wdmaud/wdmaud.h URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/wdm/audio/legacy/wd... ============================================================================== --- trunk/reactos/drivers/wdm/audio/legacy/wdmaud/wdmaud.h [iso-8859-1] (original) +++ trunk/reactos/drivers/wdm/audio/legacy/wdmaud/wdmaud.h [iso-8859-1] Wed Jan 28 09:24:57 2009 @@ -9,8 +9,20 @@
typedef struct { + LIST_ENTRY Entry; + HANDLE Handle; + UNICODE_STRING SymbolicLink; + PFILE_OBJECT FileObject; +}SYSAUDIO_ENTRY; + + +typedef struct +{ KSDEVICE_HEADER DeviceHeader; PVOID SysAudioNotification; + + ULONG NumSysAudioDevices; + LIST_ENTRY SysAudioDeviceList;
}WDMAUD_DEVICE_EXTENSION, *PWDMAUD_DEVICE_EXTENSION;
-
janderwald＠svn.reactos.org