*/
#include "usbaudio.h"
+#include <math.h>
+
+NTSTATUS
+GetMaxPacketSizeForInterface(
+ IN PUSB_CONFIGURATION_DESCRIPTOR ConfigurationDescriptor,
+ IN PUSB_INTERFACE_DESCRIPTOR InterfaceDescriptor,
+ KSPIN_DATAFLOW DataFlow)
+{
+ PUSB_COMMON_DESCRIPTOR CommonDescriptor;
+ PUSB_ENDPOINT_DESCRIPTOR EndpointDescriptor;
+
+ /* loop descriptors */
+ CommonDescriptor = (PUSB_COMMON_DESCRIPTOR)((ULONG_PTR)InterfaceDescriptor + InterfaceDescriptor->bLength);
+ ASSERT(InterfaceDescriptor->bNumEndpoints > 0);
+ while (CommonDescriptor)
+ {
+ if (CommonDescriptor->bDescriptorType == USB_ENDPOINT_DESCRIPTOR_TYPE)
+ {
+ EndpointDescriptor = (PUSB_ENDPOINT_DESCRIPTOR)CommonDescriptor;
+ return EndpointDescriptor->wMaxPacketSize;
+ }
+
+ if (CommonDescriptor->bDescriptorType == USB_INTERFACE_DESCRIPTOR_TYPE)
+ {
+ /* reached next interface descriptor */
+ break;
+ }
+
+ if ((ULONG_PTR)CommonDescriptor + CommonDescriptor->bLength >= ((ULONG_PTR)ConfigurationDescriptor + ConfigurationDescriptor->wTotalLength))
+ break;
+
+ CommonDescriptor = (PUSB_COMMON_DESCRIPTOR)((ULONG_PTR)CommonDescriptor + CommonDescriptor->bLength);
+ }
+
+ /* default to 100 */
+ return 100;
+}
+
+NTSTATUS
+UsbAudioAllocCaptureUrbIso(
+ IN USBD_PIPE_HANDLE PipeHandle,
+ IN ULONG MaxPacketSize,
+ IN PVOID Buffer,
+ IN ULONG BufferLength,
+ OUT PURB * OutUrb)
+{
+ PURB Urb;
+ ULONG PacketCount;
+ ULONG UrbSize;
+ ULONG Index;
+
+ /* calculate packet count */
+ PacketCount = BufferLength / MaxPacketSize;
+
+ /* calculate urb size*/
+ UrbSize = GET_ISO_URB_SIZE(PacketCount);
+
+ /* allocate urb */
+ Urb = AllocFunction(UrbSize);
+ if (!Urb)
+ {
+ /* no memory */
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* init urb */
+ Urb->UrbIsochronousTransfer.Hdr.Function = URB_FUNCTION_ISOCH_TRANSFER;
+ Urb->UrbIsochronousTransfer.Hdr.Length = UrbSize;
+ Urb->UrbIsochronousTransfer.PipeHandle = PipeHandle;
+ Urb->UrbIsochronousTransfer.TransferFlags = USBD_TRANSFER_DIRECTION_IN | USBD_START_ISO_TRANSFER_ASAP;
+ Urb->UrbIsochronousTransfer.TransferBufferLength = BufferLength;
+ Urb->UrbIsochronousTransfer.TransferBuffer = Buffer;
+ Urb->UrbIsochronousTransfer.NumberOfPackets = PacketCount;
+
+ for (Index = 0; Index < PacketCount; Index++)
+ {
+ Urb->UrbIsochronousTransfer.IsoPacket[Index].Offset = Index * MaxPacketSize;
+ }
+
+ *OutUrb = Urb;
+ return STATUS_SUCCESS;
+
+}
+
+
NTSTATUS
UsbAudioSetFormat(
NTSTATUS
USBAudioSelectAudioStreamingInterface(
+ IN PPIN_CONTEXT PinContext,
IN PDEVICE_EXTENSION DeviceExtension,
IN PUSB_CONFIGURATION_DESCRIPTOR ConfigurationDescriptor)
{
return STATUS_INVALID_PARAMETER;
}
- /* select the first interface with audio streaming and non zero num of endpoints */
+ /* FIXME selects the first interface with audio streaming and non zero num of endpoints */
while (InterfaceDescriptor != NULL)
{
if (InterfaceDescriptor->bInterfaceSubClass == 0x02 /* AUDIO_STREAMING */ && InterfaceDescriptor->bNumEndpoints > 0)
/* now prepare interface urb */
UsbBuildSelectInterfaceRequest(Urb, GET_SELECT_INTERFACE_REQUEST_SIZE(InterfaceDescriptor->bNumEndpoints), DeviceExtension->ConfigurationHandle, InterfaceDescriptor->bInterfaceNumber, InterfaceDescriptor->bAlternateSetting);
- /* copy interface information */
- RtlCopyMemory(&Urb->UrbSelectInterface.Interface, DeviceExtension->InterfaceInfo, DeviceExtension->InterfaceInfo->Length);
-
- /* set configuration handle */
- Urb->UrbSelectInterface.ConfigurationHandle = DeviceExtension->ConfigurationHandle;
-
/* now select the interface */
Status = SubmitUrbSync(DeviceExtension->LowerDevice, Urb);
/* did it succeeed */
if (NT_SUCCESS(Status))
{
- /* update configuration info */
- ASSERT(Urb->UrbSelectInterface.Interface.Length == DeviceExtension->InterfaceInfo->Length);
+ /* free old interface info */
+ if (DeviceExtension->InterfaceInfo)
+ {
+ /* free old info */
+ FreeFunction(DeviceExtension->InterfaceInfo);
+ }
+
+ /* alloc interface info */
+ DeviceExtension->InterfaceInfo = AllocFunction(Urb->UrbSelectInterface.Interface.Length);
+ if (DeviceExtension->InterfaceInfo == NULL)
+ {
+ /* no memory */
+ FreeFunction(Urb);
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* copy interface info */
RtlCopyMemory(DeviceExtension->InterfaceInfo, &Urb->UrbSelectInterface.Interface, Urb->UrbSelectInterface.Interface.Length);
+ PinContext->InterfaceDescriptor = InterfaceDescriptor;
}
/* free urb */
IN PKSPIN Pin)
{
NTSTATUS Status;
+ ULONG Index;
+ ULONG BufferSize;
+ ULONG MaximumPacketSize;
+ PIRP Irp;
+ PURB Urb;
+ PPIN_CONTEXT PinContext;
+ PIO_STACK_LOCATION IoStack;
+ PKSALLOCATOR_FRAMING_EX Framing;
/* set sample rate */
Status = UsbAudioSetFormat(Pin);
+ if (!NT_SUCCESS(Status))
+ {
+ /* failed */
+ return Status;
+ }
+
+ /* get pin context */
+ PinContext = Pin->Context;
+
+ /* lets get maximum packet size */
+ MaximumPacketSize = GetMaxPacketSizeForInterface(PinContext->DeviceExtension->ConfigurationDescriptor, PinContext->InterfaceDescriptor, Pin->DataFlow);
- /* TODO: init pin */
+ /* lets edit framing struct */
+ Framing = (PKSALLOCATOR_FRAMING_EX)Pin->Descriptor->AllocatorFraming;
+ Framing->FramingItem[0].PhysicalRange.MinFrameSize =
+ Framing->FramingItem[0].PhysicalRange.MaxFrameSize =
+ Framing->FramingItem[0].FramingRange.Range.MinFrameSize =
+ Framing->FramingItem[0].FramingRange.Range.MaxFrameSize =
+ MaximumPacketSize;
+
+ /* calculate buffer size 8 irps * 10 iso packets * max packet size */
+ BufferSize = 8 * 10 * MaximumPacketSize;
+
+ /* allocate pin capture buffer */
+ PinContext->BufferSize = BufferSize;
+ PinContext->Buffer = AllocFunction(BufferSize);
+ if (!PinContext->Buffer)
+ {
+ /* no memory */
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+ KsAddItemToObjectBag(Pin->Bag, PinContext->Buffer, ExFreePool);
+
+ /* init irps */
+ for (Index = 0; Index < 8; Index++)
+ {
+ /* allocate irp */
+ Irp = AllocFunction(IoSizeOfIrp(PinContext->DeviceExtension->LowerDevice->StackSize));
+ if (!Irp)
+ {
+ /* no memory */
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* initialize irp */
+ IoInitializeIrp(Irp, IoSizeOfIrp(PinContext->DeviceExtension->LowerDevice->StackSize), PinContext->DeviceExtension->LowerDevice->StackSize);
+
+ Irp->IoStatus.Status = STATUS_NOT_SUPPORTED;
+ Irp->IoStatus.Information = 0;
+ Irp->Flags = 0;
+ Irp->UserBuffer = NULL;
+
+ IoStack = IoGetNextIrpStackLocation(Irp);
+ IoStack->DeviceObject = PinContext->DeviceExtension->LowerDevice;
+ IoStack->Parameters.Others.Argument2 = NULL;
+ IoStack->MajorFunction = IRP_MJ_INTERNAL_DEVICE_CONTROL;
+ IoStack->Parameters.DeviceIoControl.IoControlCode = IOCTL_INTERNAL_USB_SUBMIT_URB;
+
+
+ DPRINT1("InitCapturePin Irp %p\n", Irp);
+ /* insert into irp list */
+ InsertTailList(&PinContext->IrpListHead, &Irp->Tail.Overlay.ListEntry);
+
+ /* add to object bag*/
+ KsAddItemToObjectBag(Pin->Bag, Irp, IoFreeIrp);
+
+ /* FIXME select correct pipe handle */
+ Status = UsbAudioAllocCaptureUrbIso(PinContext->DeviceExtension->InterfaceInfo->Pipes[0].PipeHandle,
+ MaximumPacketSize,
+ &PinContext->Buffer[MaximumPacketSize * 10 * Index],
+ MaximumPacketSize * 10,
+ &Urb);
+
+ if (NT_SUCCESS(Status))
+ {
+ /* get next stack location */
+ IoStack = IoGetNextIrpStackLocation(Irp);
+
+ /* store urb */
+ IoStack->Parameters.Others.Argument1 = Urb;
+ Irp->Tail.Overlay.DriverContext[0] = Urb;
+ }
+ else
+ {
+ /* failed */
+ return Status;
+ }
+ }
return Status;
}
/* init pin context */
PinContext->DeviceExtension = FilterContext->DeviceExtension;
PinContext->LowerDevice = FilterContext->LowerDevice;
+ InitializeListHead(&PinContext->IrpListHead);
+ InitializeListHead(&PinContext->DoneIrpListHead);
+ KeInitializeSpinLock(&PinContext->IrpListLock);
/* store pin context*/
Pin->Context = PinContext;
+ /* lets edit allocator framing struct */
+ Status = _KsEdit(Pin->Bag, &Pin->Descriptor, sizeof(KSPIN_DESCRIPTOR_EX), sizeof(KSPIN_DESCRIPTOR_EX), USBAUDIO_TAG);
+ if (NT_SUCCESS(Status))
+ {
+ Status = _KsEdit(Pin->Bag, &Pin->Descriptor->AllocatorFraming, sizeof(KSALLOCATOR_FRAMING_EX), sizeof(KSALLOCATOR_FRAMING_EX), USBAUDIO_TAG);
+ ASSERT(Status == STATUS_SUCCESS);
+ }
+
+
/* select streaming interface */
- Status = USBAudioSelectAudioStreamingInterface(PinContext->DeviceExtension, PinContext->DeviceExtension->ConfigurationDescriptor);
+ Status = USBAudioSelectAudioStreamingInterface(PinContext, PinContext->DeviceExtension, PinContext->DeviceExtension->ConfigurationDescriptor);
if (!NT_SUCCESS(Status))
{
/* failed */
return STATUS_NOT_IMPLEMENTED;
}
+NTSTATUS
+NTAPI
+UsbAudioCaptureComplete(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN PIRP Irp,
+ IN PVOID Context)
+{
+ PKSPIN Pin;
+ PPIN_CONTEXT PinContext;
+ KIRQL OldLevel;
+ PURB Urb;
+ PIO_STACK_LOCATION IoStack;
+
+
+ /* get pin context */
+ Pin = Context;
+ PinContext = Pin->Context;
+
+ /* get stack location */
+ IoStack = IoGetNextIrpStackLocation(Irp);
+
+ /* get urb */
+ Urb = Irp->Tail.Overlay.DriverContext[0];
+
+ //DPRINT("UsbAudioCaptureComplete Irp %p Urb %p\n", Irp, Urb);
+
+ /* acquire lock */
+ KeAcquireSpinLock(&PinContext->IrpListLock, &OldLevel);
+
+ /* insert entry into done list */
+ InsertTailList(&PinContext->DoneIrpListHead, &Irp->Tail.Overlay.ListEntry);
+
+ /* release lock */
+ KeReleaseSpinLock(&PinContext->IrpListLock, OldLevel);
+
+ /* done */
+ return STATUS_MORE_PROCESSING_REQUIRED;
+}
+
+NTSTATUS
+PinCaptureProcess(
+ IN PKSPIN Pin)
+{
+ PKSSTREAM_POINTER LeadingStreamPointer;
+ KIRQL OldLevel;
+ PPIN_CONTEXT PinContext;
+ PLIST_ENTRY CurEntry;
+ PIRP Irp;
+ PIO_STACK_LOCATION IoStack;
+ PURB Urb;
+ PUCHAR TransferBuffer, OutBuffer;
+ ULONG Index, Offset, MaximumPacketSize, Length;
+ NTSTATUS Status;
+ //PUSHORT SoundBuffer;
+
+ LeadingStreamPointer = KsPinGetLeadingEdgeStreamPointer(Pin, KSSTREAM_POINTER_STATE_LOCKED);
+ if (LeadingStreamPointer == NULL)
+ return STATUS_SUCCESS;
+
+ /* get pin context */
+ PinContext = Pin->Context;
+
+ /* acquire spin lock */
+ KeAcquireSpinLock(&PinContext->IrpListLock, &OldLevel);
+
+ while (!IsListEmpty(&PinContext->DoneIrpListHead))
+ {
+ /* remove entry from list */
+ CurEntry = RemoveHeadList(&PinContext->DoneIrpListHead);
+
+ /* release lock */
+ KeReleaseSpinLock(&PinContext->IrpListLock, OldLevel);
+
+ /* get irp offset */
+ Irp = (PIRP)CONTAINING_RECORD(CurEntry, IRP, Tail.Overlay.ListEntry);
+
+ /* get urb from irp */
+ IoStack = IoGetNextIrpStackLocation(Irp);
+ Urb = (PURB)Irp->Tail.Overlay.DriverContext[0];
+ ASSERT(Urb);
+
+ Offset = 0;
+ for (Index = 0; Index < Urb->UrbIsochronousTransfer.NumberOfPackets; Index++)
+ {
+ /* add offset */
+ Offset += Urb->UrbIsochronousTransfer.IsoPacket[Index].Offset;
+
+ /* get transfer buffer */
+ TransferBuffer = Urb->UrbIsochronousTransfer.TransferBuffer;
+
+ /* get target buffer */
+ OutBuffer = (PUCHAR)LeadingStreamPointer->StreamHeader->Data;
+
+ /* calculate length */
+ Length = min(LeadingStreamPointer->OffsetOut.Count - LeadingStreamPointer->StreamHeader->DataUsed, Urb->UrbIsochronousTransfer.IsoPacket[Index].Length);
+
+ //DPRINT1("DataUsed %lu Count %lu Remaining %lu Copying %lu Data %p\n", LeadingStreamPointer->StreamHeader->DataUsed, LeadingStreamPointer->OffsetOut.Count, LeadingStreamPointer->OffsetOut.Remaining, Length, LeadingStreamPointer->OffsetOut.Data);
+
+ /* copy buffer */
+ RtlCopyMemory((PUCHAR)&OutBuffer[LeadingStreamPointer->StreamHeader->DataUsed], &TransferBuffer[Offset], Length);
+
+ LeadingStreamPointer->StreamHeader->DataUsed += Length;
+
+ if (Length == LeadingStreamPointer->OffsetOut.Remaining) {
+ KsStreamPointerAdvanceOffsetsAndUnlock(LeadingStreamPointer, 0, Length, TRUE);
+
+ LeadingStreamPointer = KsPinGetLeadingEdgeStreamPointer(Pin, KSSTREAM_POINTER_STATE_LOCKED);
+ if (LeadingStreamPointer == NULL)
+ {
+ /* FIXME handle half processed packets */
+ //ASSERT(FALSE);
+ //DPRINT1("Warning: ignoring %lu packets\n", Urb->UrbIsochronousTransfer.NumberOfPackets - Index);
+
+ /* acquire spin lock */
+ KeAcquireSpinLock(&PinContext->IrpListLock, &OldLevel);
+
+ InsertTailList(&PinContext->IrpListHead, &Irp->Tail.Overlay.ListEntry);
+
+ KeReleaseSpinLock(&PinContext->IrpListLock, OldLevel);
+ return STATUS_SUCCESS;
+ }
+ }
+ else
+ {
+ Status = KsStreamPointerAdvanceOffsets(LeadingStreamPointer, 0, Length, FALSE);
+ }
+ }
+
+
+ /* acquire spin lock */
+ KeAcquireSpinLock(&PinContext->IrpListLock, &OldLevel);
+
+ InsertTailList(&PinContext->IrpListHead, &Irp->Tail.Overlay.ListEntry);
+
+ if (LeadingStreamPointer == NULL)
+ break;
+ }
+
+ while (!IsListEmpty(&PinContext->IrpListHead))
+ {
+ /* remove entry from list */
+ CurEntry = RemoveHeadList(&PinContext->IrpListHead);
+
+ /* release lock */
+ KeReleaseSpinLock(&PinContext->IrpListLock, OldLevel);
+
+ /* get irp offset */
+ Irp = (PIRP)CONTAINING_RECORD(CurEntry, IRP, Tail.Overlay.ListEntry);
+
+ /* backup urb and transferbuffer */
+ Urb = Irp->Tail.Overlay.DriverContext[0];
+ TransferBuffer = Urb->UrbIsochronousTransfer.TransferBuffer;
+
+ /* initialize irp */
+ IoInitializeIrp(Irp, IoSizeOfIrp(PinContext->DeviceExtension->LowerDevice->StackSize), PinContext->DeviceExtension->LowerDevice->StackSize);
+
+ Irp->IoStatus.Status = STATUS_NOT_SUPPORTED;
+ Irp->IoStatus.Information = 0;
+ Irp->Flags = 0;
+ Irp->UserBuffer = NULL;
+ Irp->Tail.Overlay.DriverContext[0] = Urb;
+
+ /* init stack location */
+ IoStack = IoGetNextIrpStackLocation(Irp);
+ IoStack->DeviceObject = PinContext->DeviceExtension->LowerDevice;
+ IoStack->Parameters.Others.Argument1 = Urb;
+ IoStack->Parameters.Others.Argument2 = NULL;
+ IoStack->MajorFunction = IRP_MJ_INTERNAL_DEVICE_CONTROL;
+ IoStack->Parameters.DeviceIoControl.IoControlCode = IOCTL_INTERNAL_USB_SUBMIT_URB;
+
+ IoSetCompletionRoutine(Irp, UsbAudioCaptureComplete, Pin, TRUE, TRUE, TRUE);
+
+ RtlZeroMemory(Urb, GET_ISO_URB_SIZE(10));
+
+ /* init urb */
+ Urb->UrbIsochronousTransfer.Hdr.Function = URB_FUNCTION_ISOCH_TRANSFER;
+ Urb->UrbIsochronousTransfer.Hdr.Length = GET_ISO_URB_SIZE(10);
+ Urb->UrbIsochronousTransfer.PipeHandle = PinContext->DeviceExtension->InterfaceInfo->Pipes[0].PipeHandle;
+ Urb->UrbIsochronousTransfer.TransferFlags = USBD_TRANSFER_DIRECTION_IN | USBD_START_ISO_TRANSFER_ASAP;
+ Urb->UrbIsochronousTransfer.TransferBufferLength = PinContext->DeviceExtension->InterfaceInfo->Pipes[0].MaximumPacketSize * 10;
+ Urb->UrbIsochronousTransfer.TransferBuffer = TransferBuffer;
+ Urb->UrbIsochronousTransfer.NumberOfPackets = 10;
+
+ for (Index = 0; Index < 10; Index++)
+ {
+ Urb->UrbIsochronousTransfer.IsoPacket[Index].Offset = Index * 100;
+ }
+
+ IoCallDriver(PinContext->DeviceExtension->LowerDevice, Irp);
+
+ /* acquire spin lock */
+ KeAcquireSpinLock(&PinContext->IrpListLock, &OldLevel);
+
+ }
+
+ /* release lock */
+ KeReleaseSpinLock(&PinContext->IrpListLock, OldLevel);
+
+ if (LeadingStreamPointer != NULL)
+ KsStreamPointerUnlock(LeadingStreamPointer, FALSE);
+
+ return STATUS_SUCCESS;
+}
+
NTSTATUS
NTAPI
USBAudioPinProcess(
_In_ PKSPIN Pin)
{
- return STATUS_SUCCESS;
+ NTSTATUS Status;
+
+ if (Pin->DataFlow == KSPIN_DATAFLOW_OUT)
+ {
+ Status = PinCaptureProcess(Pin);
+ }
+ else
+ {
+ UNIMPLEMENTED;
+ Status = STATUS_NOT_IMPLEMENTED;
+ }
+
+ return Status;
}
return UsbAudioSetFormat(Pin);
}
+NTSTATUS
+StartCaptureIsocTransfer(
+ IN PKSPIN Pin)
+{
+ PPIN_CONTEXT PinContext;
+ PLIST_ENTRY CurEntry;
+ PIRP Irp;
+ PURB Urb;
+ PIO_STACK_LOCATION IoStack;
+ NTSTATUS Status;
+ KIRQL OldLevel;
+
+ /* get pin context */
+ PinContext = Pin->Context;
+
+ /* acquire spin lock */
+ KeAcquireSpinLock(&PinContext->IrpListLock, &OldLevel);
+
+ while(!IsListEmpty(&PinContext->IrpListHead))
+ {
+ /* remove entry from list */
+ CurEntry = RemoveHeadList(&PinContext->IrpListHead);
+
+ /* get irp offset */
+ Irp = (PIRP)CONTAINING_RECORD(CurEntry, IRP, Tail.Overlay.ListEntry);
+
+
+ /* get next stack location */
+ IoStack = IoGetNextIrpStackLocation(Irp);
+
+ /* init stack location */
+ IoStack->MajorFunction = IRP_MJ_INTERNAL_DEVICE_CONTROL;
+ IoStack->Parameters.DeviceIoControl.IoControlCode = IOCTL_INTERNAL_USB_SUBMIT_URB;
+
+ /* backup urb */
+ Urb = Irp->Tail.Overlay.DriverContext[0] = IoStack->Parameters.Others.Argument1;
+
+ IoSetCompletionRoutine(Irp, UsbAudioCaptureComplete, Pin, TRUE, TRUE, TRUE);
+
+ /* release lock */
+ KeReleaseSpinLock(&PinContext->IrpListLock, OldLevel);
+
+ DPRINT("StartCaptureIsocTransfer Irp %p Urb %p TransferBuffer %p\n", Irp, Urb, Urb->UrbIsochronousTransfer.TransferBuffer);
+ Status = IoCallDriver(PinContext->DeviceExtension->LowerDevice, Irp);
+
+ /* acquire spin lock */
+ KeAcquireSpinLock(&PinContext->IrpListLock, &OldLevel);
+
+ }
+
+ /* release lock */
+ KeReleaseSpinLock(&PinContext->IrpListLock, OldLevel);
+
+ return STATUS_SUCCESS;
+}
+
+NTSTATUS
+CapturePinStateChange(
+ _In_ PKSPIN Pin,
+ _In_ KSSTATE ToState,
+ _In_ KSSTATE FromState)
+{
+ NTSTATUS Status;
+
+ if (FromState != ToState)
+ {
+ if (ToState)
+ {
+ if (ToState == KSSTATE_PAUSE)
+ {
+ if (FromState == KSSTATE_RUN)
+ {
+ /* wait until pin processing is finished*/
+ }
+ }
+ else
+ {
+ if (ToState == KSSTATE_RUN)
+ {
+ Status = StartCaptureIsocTransfer(Pin);
+ }
+ }
+ }
+ }
+ return Status;
+}
+
+
NTSTATUS
NTAPI
USBAudioPinSetDeviceState(
_In_ KSSTATE ToState,
_In_ KSSTATE FromState)
{
- UNIMPLEMENTED
- return STATUS_SUCCESS;
+ NTSTATUS Status;
+
+ if (Pin->DataFlow == KSPIN_DATAFLOW_OUT)
+ {
+ /* handle capture state changes */
+ Status = CapturePinStateChange(Pin, ToState, FromState);
+ }
+ else
+ {
+ UNIMPLEMENTED
+ Status = STATUS_NOT_IMPLEMENTED;
+ }
+
+ return Status;
}
projects / reactos.git / blobdiff