KSDDKAPI
NTSTATUS
NTAPI
KspPinPropertyHandler(
IN PIRP Irp,
IN PKSPROPERTY Property,
IN OUT PVOID Data,
IN ULONG DescriptorsCount,
IN const KSPIN_DESCRIPTOR* Descriptors,
IN ULONG DescriptorSize)
{
KSP_PIN * Pin;
KSMULTIPLE_ITEM * Item;
PIO_STACK_LOCATION IoStack;
ULONG Size, Index;
PVOID Buffer;
PKSDATARANGE_AUDIO *WaveFormatOut;
PKSDATAFORMAT_WAVEFORMATEX WaveFormatIn;
PKEY_VALUE_PARTIAL_INFORMATION KeyInfo;
const KSPIN_DESCRIPTOR *Descriptor;
NTSTATUS Status = STATUS_NOT_SUPPORTED;
ULONG Count;
const PKSDATARANGE* DataRanges;
LPGUID Guid;
IoStack = IoGetCurrentIrpStackLocation(Irp);
Buffer = Data;
//DPRINT("KsPinPropertyHandler Irp %p Property %p Data %p DescriptorsCount %u Descriptor %p OutputLength %u Id %u\n", Irp, Property, Data, DescriptorsCount, Descriptor, IoStack->Parameters.DeviceIoControl.OutputBufferLength, Property->Id);
/* convert to PKSP_PIN */
Pin = (KSP_PIN*)Property;
if (Property->Id != KSPROPERTY_PIN_CTYPES)
{
if (Pin->PinId >= DescriptorsCount)
{
/* invalid parameter */
return STATUS_INVALID_PARAMETER;
}
}
else
{
(*(PULONG)Buffer) = DescriptorsCount;
Irp->IoStatus.Information = sizeof(ULONG);
return STATUS_SUCCESS;
}
if (DescriptorSize == sizeof(KSPIN_DESCRIPTOR))
{
/* it is simple pin descriptor */
Descriptor = &Descriptors[Pin->PinId];
}
else
{
/* get offset to pin descriptor */
Descriptor = &(((PKSPIN_DESCRIPTOR_EX)((ULONG_PTR)Descriptors + Pin->PinId * DescriptorSize))->PinDescriptor);
}
switch(Property->Id)
{
case KSPROPERTY_PIN_DATAFLOW:
Size = sizeof(KSPIN_DATAFLOW);
if (IoStack->Parameters.DeviceIoControl.OutputBufferLength < Size)
{
Irp->IoStatus.Information = Size;
Status = STATUS_BUFFER_TOO_SMALL;
break;
}
*((KSPIN_DATAFLOW*)Buffer) = Descriptor->DataFlow;
Irp->IoStatus.Information = sizeof(KSPIN_DATAFLOW);
Status = STATUS_SUCCESS;
break;
case KSPROPERTY_PIN_DATARANGES:
case KSPROPERTY_PIN_CONSTRAINEDDATARANGES:
Size = sizeof(KSMULTIPLE_ITEM);
DPRINT("Id %lu PinId %lu DataRangesCount %lu ConstrainedDataRangesCount %lu\n", Property->Id, Pin->PinId, Descriptor->DataRangesCount, Descriptor->ConstrainedDataRangesCount);
if (Property->Id == KSPROPERTY_PIN_DATARANGES || Descriptor->ConstrainedDataRangesCount == 0)
{
DataRanges = Descriptor->DataRanges;
Count = Descriptor->DataRangesCount;
}
else
{
DataRanges = Descriptor->ConstrainedDataRanges;
Count = Descriptor->ConstrainedDataRangesCount;
}
for (Index = 0; Index < Count; Index++)
{
Size += ((DataRanges[Index]->FormatSize + 0x7) & ~0x7);
}
if (IoStack->Parameters.DeviceIoControl.OutputBufferLength == 0)
{
/* buffer too small */
Irp->IoStatus.Information = Size;
Status = STATUS_BUFFER_OVERFLOW;
break;
}
Item = (KSMULTIPLE_ITEM*)Buffer;
if (IoStack->Parameters.DeviceIoControl.OutputBufferLength == sizeof(ULONG))
{
/* store the result size */
Item->Size = Size;
Irp->IoStatus.Information = sizeof(ULONG);
Status = STATUS_SUCCESS;
break;
}
/* store descriptor size */
Item->Size = Size;
Item->Count = Count;
if (IoStack->Parameters.DeviceIoControl.OutputBufferLength == sizeof(KSMULTIPLE_ITEM))
{
Irp->IoStatus.Information = sizeof(KSMULTIPLE_ITEM);
Status = STATUS_SUCCESS;
break;
}
/* now copy all dataranges */
Data = (PUCHAR)(Item +1);
/* alignment assert */
ASSERT(((ULONG_PTR)Data & 0x7) == 0);
for (Index = 0; Index < Count; Index++)
{
UNICODE_STRING GuidString;
/* convert the guid to string */
RtlStringFromGUID(&DataRanges[Index]->MajorFormat, &GuidString);
DPRINT("Index %lu MajorFormat %S\n", Index, GuidString.Buffer);
RtlStringFromGUID(&DataRanges[Index]->SubFormat, &GuidString);
DPRINT("Index %lu SubFormat %S\n", Index, GuidString.Buffer);
RtlStringFromGUID(&DataRanges[Index]->Specifier, &GuidString);
DPRINT("Index %lu Specifier %S\n", Index, GuidString.Buffer);
RtlStringFromGUID(&DataRanges[Index]->Specifier, &GuidString);
DPRINT("Index %lu FormatSize %lu Flags %lu SampleSize %lu Reserved %lu KSDATAFORMAT %lu\n", Index,
DataRanges[Index]->FormatSize, DataRanges[Index]->Flags, DataRanges[Index]->SampleSize, DataRanges[Index]->Reserved, sizeof(KSDATAFORMAT));
RtlMoveMemory(Data, DataRanges[Index], DataRanges[Index]->FormatSize);
Data = ((PUCHAR)Data + DataRanges[Index]->FormatSize);
/* alignment assert */
ASSERT(((ULONG_PTR)Data & 0x7) == 0);
Data = (PVOID)(((ULONG_PTR)Data + 0x7) & ~0x7);
}
Status = STATUS_SUCCESS;
Irp->IoStatus.Information = Size;
break;
case KSPROPERTY_PIN_INTERFACES:
if (Descriptor->Interfaces)
{
/* use mediums provided by driver */
return KsHandleSizedListQuery(Irp, Descriptor->InterfacesCount, sizeof(KSPIN_MEDIUM), Descriptor->Interfaces);
}
else
{
/* use standard medium */
return KsHandleSizedListQuery(Irp, 1, sizeof(KSPIN_INTERFACE), &StandardPinInterface);
}
break;
case KSPROPERTY_PIN_MEDIUMS:
if (Descriptor->MediumsCount)
{
/* use mediums provided by driver */
return KsHandleSizedListQuery(Irp, Descriptor->MediumsCount, sizeof(KSPIN_MEDIUM), Descriptor->Mediums);
}
else
{
/* use standard medium */
return KsHandleSizedListQuery(Irp, 1, sizeof(KSPIN_MEDIUM), &StandardPinMedium);
}
break;
case KSPROPERTY_PIN_COMMUNICATION:
Size = sizeof(KSPIN_COMMUNICATION);
if (IoStack->Parameters.DeviceIoControl.OutputBufferLength < Size)
{
Irp->IoStatus.Information = Size;
Status = STATUS_BUFFER_TOO_SMALL;
break;
}
*((KSPIN_COMMUNICATION*)Buffer) = Descriptor->Communication;
Status = STATUS_SUCCESS;
Irp->IoStatus.Information = Size;
break;
case KSPROPERTY_PIN_CATEGORY:
if (!Descriptor->Category)
{
/* no pin category */
return STATUS_NOT_FOUND;
}
/* check size */
Size = sizeof(GUID);
if (IoStack->Parameters.DeviceIoControl.OutputBufferLength < Size)
{
/* buffer too small */
Irp->IoStatus.Information = Size;
Status = STATUS_BUFFER_TOO_SMALL;
break;
}
/* copy category guid */
RtlMoveMemory(Buffer, Descriptor->Category, sizeof(GUID));
/* save result */
Status = STATUS_SUCCESS;
Irp->IoStatus.Information = Size;
break;
case KSPROPERTY_PIN_NAME:
if (Descriptor->Name)
{
/* use pin name */
Guid = (LPGUID)Descriptor->Name;
}
else
{
/* use pin category as fallback */
Guid = (LPGUID)Descriptor->Category;
}
if (!Guid)
{
/* no friendly name available */
return STATUS_NOT_FOUND;
}
/* read friendly name category name */
Status = KspReadMediaCategory(Guid, &KeyInfo);
if (!NT_SUCCESS(Status))
{
/* failed to read category */
Irp->IoStatus.Information = 0;
break;
}
/* store required length */
Irp->IoStatus.Information = KeyInfo->DataLength + sizeof(WCHAR);
/* check if buffer is too small */
if (KeyInfo->DataLength + sizeof(WCHAR) > IoStack->Parameters.DeviceIoControl.OutputBufferLength)
{
/* buffer too small */
Status = STATUS_BUFFER_OVERFLOW;
FreeItem(KeyInfo);
break;
}
/* copy result */
RtlMoveMemory(Irp->AssociatedIrp.SystemBuffer, &KeyInfo->Data, KeyInfo->DataLength);
/* null terminate name */
((LPWSTR)Irp->AssociatedIrp.SystemBuffer)[KeyInfo->DataLength / sizeof(WCHAR)] = L'\0';
/* free key info */
FreeItem(KeyInfo);
break;
case KSPROPERTY_PIN_PROPOSEDATAFORMAT:
Size = sizeof(KSDATAFORMAT);
if (IoStack->Parameters.DeviceIoControl.OutputBufferLength < Size)
{
Irp->IoStatus.Information = Size;
Status = STATUS_BUFFER_TOO_SMALL;
break;
}
if (IoStack->Parameters.DeviceIoControl.OutputBufferLength != sizeof(KSDATAFORMAT_WAVEFORMATEX))
{
UNIMPLEMENTED;
Status = STATUS_NOT_IMPLEMENTED;
Irp->IoStatus.Information = 0;
break;
}
WaveFormatIn = (PKSDATAFORMAT_WAVEFORMATEX)Buffer;
if (!Descriptor->DataRanges || !Descriptor->DataRangesCount)
{
Status = STATUS_UNSUCCESSFUL;
Irp->IoStatus.Information = 0;
break;
}
WaveFormatOut = (PKSDATARANGE_AUDIO*)Descriptor->DataRanges;
for(Index = 0; Index < Descriptor->DataRangesCount; Index++)
{
if (WaveFormatOut[Index]->DataRange.FormatSize != sizeof(KSDATARANGE_AUDIO))
{
UNIMPLEMENTED;
continue;
}
if (WaveFormatOut[Index]->MinimumSampleFrequency > WaveFormatIn->WaveFormatEx.nSamplesPerSec ||
WaveFormatOut[Index]->MaximumSampleFrequency < WaveFormatIn->WaveFormatEx.nSamplesPerSec ||
WaveFormatOut[Index]->MinimumBitsPerSample > WaveFormatIn->WaveFormatEx.wBitsPerSample ||
WaveFormatOut[Index]->MaximumBitsPerSample < WaveFormatIn->WaveFormatEx.wBitsPerSample ||
WaveFormatOut[Index]->MaximumChannels < WaveFormatIn->WaveFormatEx.nChannels)
{
Irp->IoStatus.Status = STATUS_NO_MATCH;
Irp->IoStatus.Information = 0;
return STATUS_NO_MATCH;
}
else
{
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = 0;
return STATUS_SUCCESS;
}
}
Status = STATUS_NO_MATCH;
Irp->IoStatus.Information = 0;
break;
default:
DPRINT1("Unhandled property request %x\n", Property->Id);
Status = STATUS_NOT_IMPLEMENTED;
Irp->IoStatus.Information = 0;
}
return Status;
}
/*
@implemented
*/
KSDDKAPI
NTSTATUS
NTAPI
KsTopologyPropertyHandler(
IN PIRP Irp,
IN PKSPROPERTY Property,
IN OUT PVOID Data,
IN const KSTOPOLOGY* Topology)
{
KSP_NODE * Node;
PIO_STACK_LOCATION IoStack;
NTSTATUS Status;
PKEY_VALUE_PARTIAL_INFORMATION KeyInfo;
LPGUID Guid;
IoStack = IoGetCurrentIrpStackLocation(Irp);
DPRINT("KsTopologyPropertyHandler Irp %p Property %p Data %p Topology %p OutputLength %lu PropertyId %lu\n", Irp, Property, Data, Topology, IoStack->Parameters.DeviceIoControl.OutputBufferLength, Property->Id);
if (Property->Flags != KSPROPERTY_TYPE_GET)
{
Irp->IoStatus.Status = STATUS_NOT_IMPLEMENTED;
Irp->IoStatus.Information = 0;
return STATUS_NOT_IMPLEMENTED;
}
switch(Property->Id)
{
case KSPROPERTY_TOPOLOGY_CATEGORIES:
return KsHandleSizedListQuery(Irp, Topology->CategoriesCount, sizeof(GUID), Topology->Categories);
case KSPROPERTY_TOPOLOGY_NODES:
return KsHandleSizedListQuery(Irp, Topology->TopologyNodesCount, sizeof(GUID), Topology->TopologyNodes);
case KSPROPERTY_TOPOLOGY_CONNECTIONS:
return KsHandleSizedListQuery(Irp, Topology->TopologyConnectionsCount, sizeof(KSTOPOLOGY_CONNECTION), Topology->TopologyConnections);
case KSPROPERTY_TOPOLOGY_NAME:
Node = (KSP_NODE*)Property;
/* check for invalid node id */
if (Node->NodeId >= Topology->TopologyNodesCount)
{
/* invalid node id */
Irp->IoStatus.Information = 0;
Status = STATUS_INVALID_PARAMETER;
break;
}
/* check if there is a name supplied */
if (!IsEqualGUIDAligned(&Topology->TopologyNodesNames[Node->NodeId], &GUID_NULL))
{
/* node name has been supplied */
Guid = (LPGUID)&Topology->TopologyNodesNames[Node->NodeId];
}
else
{
/* fallback to topology node type */
Guid = (LPGUID)&Topology->TopologyNodes[Node->NodeId];
}
/* read topology node name */
Status = KspReadMediaCategory(Guid, &KeyInfo);
if (!NT_SUCCESS(Status))
{
Irp->IoStatus.Information = 0;
break;
}
/* store result size */
Irp->IoStatus.Information = KeyInfo->DataLength + sizeof(WCHAR);
/* check for buffer overflow */
if (KeyInfo->DataLength + sizeof(WCHAR) > IoStack->Parameters.DeviceIoControl.OutputBufferLength)
{
/* buffer too small */
Status = STATUS_BUFFER_OVERFLOW;
FreeItem(KeyInfo);
break;
}
/* copy result buffer */
RtlMoveMemory(Irp->UserBuffer, &KeyInfo->Data, KeyInfo->DataLength);
/* zero terminate it */
((LPWSTR)Irp->UserBuffer)[KeyInfo->DataLength / sizeof(WCHAR)] = L'\0';
/* free key info */
FreeItem(KeyInfo);
break;
default:
Irp->IoStatus.Information = 0;
Status = STATUS_NOT_FOUND;
}
return Status;
}