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- Rewrite mixer enumeration functions
- WDMAUD should reports a mixer device each time it sees a KSNODETYPE_ADC / KSNODETYPE_DAC svn path=/trunk/; revision=43129
This commit is contained in:
Johannes Anderwald
parent
5a4647d276
commit
fee01ee6d4
2 changed files with 180 additions and 103 deletions
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@ -8,152 +8,224 @@
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*/
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*/
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#include "wdmaud.h"
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#include "wdmaud.h"
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ULONG
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const GUID KSNODETYPE_DAC = {0x507AE360L, 0xC554, 0x11D0, {0x8A, 0x2B, 0x00, 0xA0, 0xC9, 0x25, 0x5A, 0xC1}};
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IsVirtualDeviceATopologyFilter(
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const GUID KSNODETYPE_ADC = {0x4D837FE0L, 0xC555, 0x11D0, {0x8A, 0x2B, 0x00, 0xA0, 0xC9, 0x25, 0x5A, 0xC1}};
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IN PDEVICE_OBJECT DeviceObject,
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ULONG VirtualDeviceId)
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{
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KSP_PIN Pin;
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ULONG Count, BytesReturned, Index, NumPins;
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NTSTATUS Status;
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KSPIN_COMMUNICATION Communication;
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PWDMAUD_DEVICE_EXTENSION DeviceExtension;
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ULONG MixerPinCount;
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Pin.Property.Set = KSPROPSETID_Sysaudio;
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ULONG
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Pin.Property.Id = KSPROPERTY_SYSAUDIO_DEVICE_COUNT;
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GetSysAudioDeviceCount(
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Pin.Property.Flags = KSPROPERTY_TYPE_GET;
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IN PDEVICE_OBJECT DeviceObject)
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{
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PWDMAUD_DEVICE_EXTENSION DeviceExtension;
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KSPROPERTY Pin;
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ULONG Count, BytesReturned;
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NTSTATUS Status;
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/* setup the query request */
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Pin.Set = KSPROPSETID_Sysaudio;
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Pin.Id = KSPROPERTY_SYSAUDIO_DEVICE_COUNT;
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Pin.Flags = KSPROPERTY_TYPE_GET;
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DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
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DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
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/* query sysaudio for the device count */
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Status = KsSynchronousIoControlDevice(DeviceExtension->FileObject, KernelMode, IOCTL_KS_PROPERTY, (PVOID)&Pin, sizeof(KSPROPERTY), (PVOID)&Count, sizeof(ULONG), &BytesReturned);
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Status = KsSynchronousIoControlDevice(DeviceExtension->FileObject, KernelMode, IOCTL_KS_PROPERTY, (PVOID)&Pin, sizeof(KSPROPERTY), (PVOID)&Count, sizeof(ULONG), &BytesReturned);
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if (!NT_SUCCESS(Status))
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if (!NT_SUCCESS(Status))
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return FALSE;
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return 0;
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if (VirtualDeviceId >= Count)
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return Count;
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return FALSE;
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}
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/* query number of pins */
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NTSTATUS
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Pin.Reserved = VirtualDeviceId; // see sysaudio
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OpenSysAudioDeviceByIndex(
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IN PDEVICE_OBJECT DeviceObject,
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IN ULONG DeviceIndex,
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IN PHANDLE DeviceHandle,
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IN PFILE_OBJECT * FileObject)
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{
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LPWSTR Device;
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HANDLE hDevice;
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ULONG BytesReturned;
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KSP_PIN Pin;
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NTSTATUS Status;
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PWDMAUD_DEVICE_EXTENSION DeviceExtension;
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/* first check if the device index is within bounds */
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if (DeviceIndex >= GetSysAudioDeviceCount(DeviceObject))
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return STATUS_INVALID_PARAMETER;
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/* setup the query request */
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Pin.Property.Set = KSPROPSETID_Sysaudio;
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Pin.Property.Id = KSPROPERTY_SYSAUDIO_DEVICE_INTERFACE_NAME;
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Pin.Property.Flags = KSPROPERTY_TYPE_GET;
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Pin.Property.Flags = KSPROPERTY_TYPE_GET;
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Pin.Property.Set = KSPROPSETID_Pin;
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Pin.PinId = DeviceIndex;
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Pin.Property.Id = KSPROPERTY_PIN_CTYPES;
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Pin.PinId = 0;
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DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
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/* query sysaudio for the device path */
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Status = KsSynchronousIoControlDevice(DeviceExtension->FileObject, KernelMode, IOCTL_KS_PROPERTY, (PVOID)&Pin, sizeof(KSPROPERTY) + sizeof(ULONG), NULL, 0, &BytesReturned);
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/* check if the request failed */
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if (Status != STATUS_BUFFER_TOO_SMALL || BytesReturned == 0)
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return STATUS_UNSUCCESSFUL;
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/* allocate buffer for the device */
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Device = ExAllocatePool(NonPagedPool, BytesReturned);
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if (!Device)
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return STATUS_INSUFFICIENT_RESOURCES;
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/* query sysaudio again for the device path */
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Status = KsSynchronousIoControlDevice(DeviceExtension->FileObject, KernelMode, IOCTL_KS_PROPERTY, (PVOID)&Pin, sizeof(KSPROPERTY) + sizeof(ULONG), (PVOID)Device, BytesReturned, &BytesReturned);
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Status = KsSynchronousIoControlDevice(DeviceExtension->FileObject, KernelMode, IOCTL_KS_PROPERTY, (PVOID)&Pin, sizeof(KSP_PIN), (PVOID)&NumPins, sizeof(ULONG), &BytesReturned);
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if (!NT_SUCCESS(Status))
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if (!NT_SUCCESS(Status))
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return FALSE;
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/* enumerate now all pins */
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MixerPinCount = 0;
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for(Index = 0; Index < NumPins; Index++)
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{
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{
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Pin.PinId = Index;
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/* failed */
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Pin.Property.Id = KSPROPERTY_PIN_COMMUNICATION;
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ExFreePool(Device);
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Communication = KSPIN_COMMUNICATION_NONE;
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return Status;
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}
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/* get pin communication type */
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/* now open the device */
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Status = KsSynchronousIoControlDevice(DeviceExtension->FileObject, KernelMode, IOCTL_KS_PROPERTY, (PVOID)&Pin, sizeof(KSP_PIN), (PVOID)&Communication, sizeof(KSPIN_COMMUNICATION), &BytesReturned);
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Status = WdmAudOpenSysAudioDevice(Device, &hDevice);
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if (NT_SUCCESS(Status))
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/* free device buffer */
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ExFreePool(Device);
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if (!NT_SUCCESS(Status))
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{
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return Status;
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}
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*DeviceHandle = hDevice;
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if (FileObject)
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{
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Status = ObReferenceObjectByHandle(hDevice, FILE_READ_DATA | FILE_WRITE_DATA, IoFileObjectType, KernelMode, (PVOID*)FileObject, NULL);
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if (!NT_SUCCESS(Status))
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{
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{
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if (Communication == KSPIN_COMMUNICATION_NONE)
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ZwClose(hDevice);
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MixerPinCount++;
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}
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}
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}
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}
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if (MixerPinCount == NumPins)
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return Status;
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}
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NTSTATUS
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GetFilterNodeTypes(
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PFILE_OBJECT FileObject,
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PKSMULTIPLE_ITEM * Item)
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{
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NTSTATUS Status;
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ULONG BytesReturned;
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PKSMULTIPLE_ITEM MultipleItem;
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KSPROPERTY Property;
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/* setup query request */
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Property.Id = KSPROPERTY_TOPOLOGY_NODES;
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Property.Flags = KSPROPERTY_TYPE_GET;
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Property.Set = KSPROPSETID_Topology;
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/* query for required size */
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Status = KsSynchronousIoControlDevice(FileObject, KernelMode, IOCTL_KS_PROPERTY, (PVOID)&Property, sizeof(KSPROPERTY), NULL, 0, &BytesReturned);
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/* check for success */
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if (Status != STATUS_MORE_ENTRIES)
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return Status;
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/* allocate buffer */
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MultipleItem = (PKSMULTIPLE_ITEM)ExAllocatePool(NonPagedPool, BytesReturned);
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if (!MultipleItem)
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return STATUS_INSUFFICIENT_RESOURCES;
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/* query for required size */
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Status = KsSynchronousIoControlDevice(FileObject, KernelMode, IOCTL_KS_PROPERTY, (PVOID)&Property, sizeof(KSPROPERTY), (PVOID)MultipleItem, BytesReturned, &BytesReturned);
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if (!NT_SUCCESS(Status))
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{
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{
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/* filter has no pins which can be instantiated -> topology filter */
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/* failed */
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return TRUE;
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ExFreePool(MultipleItem);
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return Status;
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}
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}
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return FALSE;
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*Item = MultipleItem;
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return Status;
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}
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}
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ULONG
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ULONG
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GetNumOfMixerPinsFromTopologyFilter(
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CountNodeType(
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IN PDEVICE_OBJECT DeviceObject,
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PKSMULTIPLE_ITEM MultipleItem,
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ULONG VirtualDeviceId)
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LPGUID NodeType)
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{
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{
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KSP_PIN Pin;
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ULONG Count;
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ULONG BytesReturned, Index, NumPins;
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ULONG Index;
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NTSTATUS Status;
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LPGUID Guid;
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PWDMAUD_DEVICE_EXTENSION DeviceExtension;
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PKSMULTIPLE_ITEM MultipleItem;
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PKSTOPOLOGY_CONNECTION Conn;
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Pin.PinId = 0;
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Count = 0;
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Pin.Reserved = VirtualDeviceId;
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Guid = (LPGUID)(MultipleItem+1);
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Pin.Property.Set = KSPROPSETID_Topology;
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Pin.Property.Id = KSPROPERTY_TOPOLOGY_CONNECTIONS;
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Pin.Property.Flags = KSPROPERTY_TYPE_GET;
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DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
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/* iterate through node type array */
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for(Index = 0; Index < MultipleItem->Count; Index++)
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BytesReturned = 0;
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Status = KsSynchronousIoControlDevice(DeviceExtension->FileObject, KernelMode, IOCTL_KS_PROPERTY, (PVOID)&Pin, sizeof(KSP_PIN), (PVOID)NULL, 0, &BytesReturned);
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if (Status != STATUS_BUFFER_TOO_SMALL)
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return 0;
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MultipleItem = ExAllocatePool(NonPagedPool, BytesReturned);
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if (!MultipleItem)
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return 0;
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RtlZeroMemory(MultipleItem, BytesReturned);
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Status = KsSynchronousIoControlDevice(DeviceExtension->FileObject, KernelMode, IOCTL_KS_PROPERTY, (PVOID)&Pin, sizeof(KSP_PIN), (PVOID)MultipleItem, BytesReturned, &BytesReturned);
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if (!NT_SUCCESS(Status))
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{
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{
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ExFreePool(MultipleItem);
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if (IsEqualGUIDAligned(NodeType, Guid))
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return 0;
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}
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Conn = (PKSTOPOLOGY_CONNECTION)(MultipleItem + 1);
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NumPins = 0;
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for (Index = 0; Index < MultipleItem->Count; Index++)
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{
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if (Conn[Index].ToNode == PCFILTER_NODE)
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{
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{
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NumPins++;
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/* found matching guid */
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Count++;
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}
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}
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Guid++;
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}
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}
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return Count;
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ExFreePool(MultipleItem);
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return NumPins;
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}
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}
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ULONG
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ULONG
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GetNumOfMixerDevices(
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GetNumOfMixerDevices(
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IN PDEVICE_OBJECT DeviceObject)
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IN PDEVICE_OBJECT DeviceObject)
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{
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{
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KSP_PIN Pin;
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ULONG DeviceCount, Index, Count;
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ULONG Count, BytesReturned, Index, NumPins;
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NTSTATUS Status;
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NTSTATUS Status;
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PWDMAUD_DEVICE_EXTENSION DeviceExtension;
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HANDLE hDevice;
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PFILE_OBJECT FileObject;
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PKSMULTIPLE_ITEM MultipleItem;
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Pin.Property.Set = KSPROPSETID_Sysaudio;
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/* get number of devices */
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Pin.Property.Id = KSPROPERTY_SYSAUDIO_DEVICE_COUNT;
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DeviceCount = GetSysAudioDeviceCount(DeviceObject);
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Pin.Property.Flags = KSPROPERTY_TYPE_GET;
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DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
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if (!DeviceCount)
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Count = 0;
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Status = KsSynchronousIoControlDevice(DeviceExtension->FileObject, KernelMode, IOCTL_KS_PROPERTY, (PVOID)&Pin, sizeof(KSPROPERTY), (PVOID)&Count, sizeof(ULONG), &BytesReturned);
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if (!NT_SUCCESS(Status) || !Count)
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return 0;
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return 0;
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NumPins = 0;
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Index = 0;
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for(Index = 0; Index < Count; Index++)
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Count = 0;
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do
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{
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{
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if (IsVirtualDeviceATopologyFilter(DeviceObject, Index))
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/* open the virtual audio device */
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{
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Status = OpenSysAudioDeviceByIndex(DeviceObject, Index, &hDevice, &FileObject);
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NumPins += GetNumOfMixerPinsFromTopologyFilter(DeviceObject, Index);
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}
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}
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return NumPins;
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if (NT_SUCCESS(Status))
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{
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/* retrieve all available node types */
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Status = GetFilterNodeTypes(FileObject, &MultipleItem);
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if (NT_SUCCESS(Status))
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{
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if (CountNodeType(MultipleItem, (LPGUID)&KSNODETYPE_DAC))
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{
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/* increment (output) mixer count */
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Count++;
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}
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if (CountNodeType(MultipleItem, (LPGUID)&KSNODETYPE_ADC))
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{
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/* increment (input) mixer count */
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Count++;
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}
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ExFreePool(MultipleItem);
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}
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ObDereferenceObject(FileObject);
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ZwClose(hDevice);
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}
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Index++;
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}while(Index < DeviceCount);
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return Count;
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}
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}
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NTSTATUS
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NTSTATUS
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@ -103,4 +103,9 @@ SetIrpIoStatus(
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IN NTSTATUS Status,
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IN NTSTATUS Status,
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IN ULONG Length);
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IN ULONG Length);
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NTSTATUS
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WdmAudOpenSysAudioDevice(
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IN LPWSTR DeviceName,
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OUT PHANDLE Handle);
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#endif
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#endif
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