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- Implement KsPinDataIntersection

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svn path=/trunk/; revision=39635
This commit is contained in:
Johannes Anderwald 2009-02-17 03:43:25 +00:00
parent 73ed4fa6a9
commit 65920de80b
1 changed files with 53 additions and 3 deletions
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56
reactos/drivers/ksfilter/ks/connectivity.c
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@ -241,16 +241,66 @@ KsPinPropertyHandler(
return Irp->IoStatus.Status;
}
KSDDKAPI NTSTATUS NTAPI
KSDDKAPI
NTSTATUS
NTAPI
KsPinDataIntersection(
IN PIRP Irp,
IN PKSPIN Pin,
IN PKSP_PIN Pin,
OUT PVOID Data,
IN ULONG DescriptorsCount,
IN const KSPIN_DESCRIPTOR* Descriptor,
IN PFNKSINTERSECTHANDLER IntersectHandler)
{
return STATUS_SUCCESS;
KSMULTIPLE_ITEM * Item;
KSDATARANGE * DataRange;
PIO_STACK_LOCATION IoStack;
ULONG Size;
ULONG Index;
NTSTATUS Status;
IoStack = IoGetCurrentIrpStackLocation(Irp);
Size = sizeof(KSP_PIN) + sizeof(KSMULTIPLE_ITEM) + sizeof(KSDATARANGE);
if (IoStack->Parameters.DeviceIoControl.InputBufferLength < Size)
{
Irp->IoStatus.Information = 0;
Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
return STATUS_BUFFER_TOO_SMALL;
}
if (Pin->PinId >= DescriptorsCount)
{
Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
Irp->IoStatus.Information = 0;
return STATUS_INVALID_PARAMETER;
}
Item = (KSMULTIPLE_ITEM*)IoStack->Parameters.DeviceIoControl.Type3InputBuffer;
DataRange = (KSDATARANGE*)(Item + 1);
for(Index = 0; Index < Item->Count; Index++, DataRange++)
{
Status = IntersectHandler(Irp, Pin, DataRange, Data);
if (NT_SUCCESS(Status))
{
if (IoStack->Parameters.DeviceIoControl.OutputBufferLength < sizeof(KSDATARANGE))
{
Irp->IoStatus.Information = sizeof(KSDATARANGE);
Irp->IoStatus.Status = STATUS_BUFFER_TOO_SMALL;
return STATUS_BUFFER_TOO_SMALL;
}
RtlMoveMemory(Irp->UserBuffer, DataRange, sizeof(KSDATARANGE));
Irp->IoStatus.Information = sizeof(KSDATARANGE);
Irp->IoStatus.Status = STATUS_SUCCESS;
return STATUS_SUCCESS;
}
}
Irp->IoStatus.Information = 0;
Irp->IoStatus.Status = STATUS_NO_MATCH;
return STATUS_NO_MATCH;
}
/* Does this belong here? */