mirror of
https://github.com/reactos/reactos.git
synced 2024-07-01 10:20:03 +00:00
2139 lines
62 KiB
C
2139 lines
62 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS Kernel Streaming
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* FILE: drivers/ksfilter/ks/filter.c
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* PURPOSE: KS IKsFilter interface functions
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* PROGRAMMER: Johannes Anderwald
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*/
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#include "precomp.h"
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#define NDEBUG
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#include <debug.h>
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typedef struct
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{
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KSBASIC_HEADER Header;
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KSFILTER Filter;
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IKsControlVtbl *lpVtblKsControl;
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IKsFilterFactory * FilterFactory;
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IKsProcessingObjectVtbl * lpVtblKsProcessingObject;
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LONG ref;
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PKSIOBJECT_HEADER ObjectHeader;
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KSTOPOLOGY Topology;
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PKSFILTERFACTORY Factory;
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PFILE_OBJECT FileObject;
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KMUTEX ControlMutex;
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KMUTEX ProcessingMutex;
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PKSWORKER Worker;
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WORK_QUEUE_ITEM WorkItem;
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KSGATE Gate;
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PFNKSFILTERPOWER Sleep;
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PFNKSFILTERPOWER Wake;
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ULONG *PinInstanceCount;
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PKSPIN * FirstPin;
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PKSPROCESSPIN_INDEXENTRY ProcessPinIndex;
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}IKsFilterImpl;
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const GUID IID_IKsControl = {0x28F54685L, 0x06FD, 0x11D2, {0xB2, 0x7A, 0x00, 0xA0, 0xC9, 0x22, 0x31, 0x96}};
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const GUID IID_IKsFilter = {0x3ef6ee44L, 0x0D41, 0x11d2, {0xbe, 0xDA, 0x00, 0xc0, 0x4f, 0x8e, 0xF4, 0x57}};
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const GUID KSPROPSETID_Topology = {0x720D4AC0L, 0x7533, 0x11D0, {0xA5, 0xD6, 0x28, 0xDB, 0x04, 0xC1, 0x00, 0x00}};
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const GUID KSPROPSETID_Pin = {0x8C134960L, 0x51AD, 0x11CF, {0x87, 0x8A, 0x94, 0xF8, 0x01, 0xC1, 0x00, 0x00}};
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const GUID KSPROPSETID_General = {0x1464EDA5L, 0x6A8F, 0x11D1, {0x9A, 0xA7, 0x00, 0xA0, 0xC9, 0x22, 0x31, 0x96}};
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VOID
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IKsFilter_RemoveFilterFromFilterFactory(
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IKsFilterImpl * This,
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PKSFILTERFACTORY FilterFactory);
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NTSTATUS NTAPI FilterTopologyPropertyHandler(IN PIRP Irp, IN PKSIDENTIFIER Request, IN OUT PVOID Data);
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NTSTATUS NTAPI FilterPinPropertyHandler(IN PIRP Irp, IN PKSIDENTIFIER Request, IN OUT PVOID Data);
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NTSTATUS NTAPI FilterGeneralComponentIdHandler(IN PIRP Irp, IN PKSIDENTIFIER Request, IN OUT PVOID Data);
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DEFINE_KSPROPERTY_TOPOLOGYSET(IKsFilterTopologySet, FilterTopologyPropertyHandler);
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DEFINE_KSPROPERTY_PINPROPOSEDATAFORMAT(IKsFilterPinSet, FilterPinPropertyHandler, FilterPinPropertyHandler, FilterPinPropertyHandler);
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DEFINE_KSPROPERTY_GENEREAL_COMPONENTID(IKsFilterGeneralSet, FilterGeneralComponentIdHandler);
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KSPROPERTY_SET FilterPropertySet[] =
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{
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{
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&KSPROPSETID_Topology,
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sizeof(IKsFilterTopologySet) / sizeof(KSPROPERTY_ITEM),
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(const KSPROPERTY_ITEM*)&IKsFilterTopologySet,
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0,
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NULL
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},
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{
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&KSPROPSETID_Pin,
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sizeof(IKsFilterPinSet) / sizeof(KSPROPERTY_ITEM),
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(const KSPROPERTY_ITEM*)&IKsFilterPinSet,
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0,
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NULL
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},
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{
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&KSPROPSETID_General,
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sizeof(IKsFilterGeneralSet) / sizeof(KSPROPERTY_ITEM),
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(const KSPROPERTY_ITEM*)&IKsFilterGeneralSet,
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0,
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NULL
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}
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};
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NTSTATUS
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NTAPI
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IKsProcessingObject_fnQueryInterface(
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IKsProcessingObject * iface,
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IN REFIID refiid,
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OUT PVOID* Output)
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{
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, lpVtblKsProcessingObject);
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if (IsEqualGUIDAligned(refiid, &IID_IUnknown))
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{
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*Output = &This->Header.OuterUnknown;
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_InterlockedIncrement(&This->ref);
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return STATUS_SUCCESS;
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}
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return STATUS_UNSUCCESSFUL;
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}
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ULONG
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NTAPI
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IKsProcessingObject_fnAddRef(
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IKsProcessingObject * iface)
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{
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, lpVtblKsProcessingObject);
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return InterlockedIncrement(&This->ref);
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}
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ULONG
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NTAPI
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IKsProcessingObject_fnRelease(
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IKsProcessingObject * iface)
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{
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, lpVtblKsProcessingObject);
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InterlockedDecrement(&This->ref);
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/* Return new reference count */
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return This->ref;
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}
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VOID
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NTAPI
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IKsProcessingObject_fnProcessingObjectWork(
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IKsProcessingObject * iface)
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{
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NTSTATUS Status;
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LARGE_INTEGER TimeOut;
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, lpVtblKsProcessingObject);
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DPRINT1("processing object\n");
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/* first check if running at passive level */
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if (KeGetCurrentIrql() == PASSIVE_LEVEL)
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{
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/* acquire processing mutex */
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KeWaitForSingleObject(&This->ControlMutex, Executive, KernelMode, FALSE, NULL);
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}
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else
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{
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/* dispatch level processing */
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if (KeReadStateMutex(&This->ControlMutex) == 0)
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{
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/* some thread was faster */
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DPRINT1("processing object too slow\n");
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return;
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}
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/* acquire processing mutex */
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TimeOut.QuadPart = 0LL;
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Status = KeWaitForSingleObject(&This->ControlMutex, Executive, KernelMode, FALSE, &TimeOut);
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if (Status == STATUS_TIMEOUT)
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{
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/* some thread was faster */
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DPRINT1("processing object too slow\n");
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return;
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}
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}
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do
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{
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/* check if the and-gate has been enabled again */
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if (&This->Gate.Count != 0)
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{
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/* gate is open */
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DPRINT1("processing object gate open\n");
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break;
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}
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DPRINT1("IKsProcessingObject_fnProcessingObjectWork not implemented\n");
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ASSERT(0);
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}while(TRUE);
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/* release process mutex */
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KeReleaseMutex(&This->ProcessingMutex, FALSE);
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}
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PKSGATE
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NTAPI
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IKsProcessingObject_fnGetAndGate(
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IKsProcessingObject * iface)
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{
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, lpVtblKsProcessingObject);
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/* return and gate */
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return &This->Gate;
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}
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VOID
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NTAPI
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IKsProcessingObject_fnProcess(
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IKsProcessingObject * iface,
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IN BOOLEAN Asynchronous)
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{
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, lpVtblKsProcessingObject);
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/* should the action be asynchronous */
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if (Asynchronous)
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{
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/* queue work item */
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KsQueueWorkItem(This->Worker, &This->WorkItem);
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DPRINT1("queueing\n");
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/* done */
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return;
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}
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/* does the filter require explicit deferred processing */
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if ((This->Filter.Descriptor->Flags & (KSFILTER_FLAG_DISPATCH_LEVEL_PROCESSING | KSFILTER_FLAG_CRITICAL_PROCESSING | KSFILTER_FLAG_HYPERCRITICAL_PROCESSING)) &&
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KeGetCurrentIrql() > PASSIVE_LEVEL)
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{
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/* queue work item */
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KsQueueWorkItem(This->Worker, &This->WorkItem);
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DPRINT1("queueing\n");
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/* done */
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return;
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}
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DPRINT1("invoke\n");
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/* call worker routine directly */
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iface->lpVtbl->ProcessingObjectWork(iface);
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}
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VOID
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NTAPI
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IKsProcessingObject_fnReset(
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IKsProcessingObject * iface)
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{
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, lpVtblKsProcessingObject);
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/* acquire processing mutex */
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KeWaitForSingleObject(&This->ProcessingMutex, Executive, KernelMode, FALSE, NULL);
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/* check if the filter supports dispatch routines */
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if (This->Filter.Descriptor->Dispatch)
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{
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/* has the filter a reset routine */
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if (This->Filter.Descriptor->Dispatch->Reset)
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{
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/* reset filter */
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This->Filter.Descriptor->Dispatch->Reset(&This->Filter);
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}
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}
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/* release process mutex */
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KeReleaseMutex(&This->ProcessingMutex, FALSE);
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}
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VOID
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NTAPI
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IKsProcessingObject_fnTriggerNotification(
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IKsProcessingObject * iface)
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{
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}
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static IKsProcessingObjectVtbl vt_IKsProcessingObject =
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{
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IKsProcessingObject_fnQueryInterface,
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IKsProcessingObject_fnAddRef,
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IKsProcessingObject_fnRelease,
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IKsProcessingObject_fnProcessingObjectWork,
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IKsProcessingObject_fnGetAndGate,
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IKsProcessingObject_fnProcess,
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IKsProcessingObject_fnReset,
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IKsProcessingObject_fnTriggerNotification
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};
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//---------------------------------------------------------------------------------------------------------
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NTSTATUS
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NTAPI
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IKsControl_fnQueryInterface(
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IKsControl * iface,
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IN REFIID refiid,
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OUT PVOID* Output)
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{
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, lpVtblKsControl);
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if (IsEqualGUIDAligned(refiid, &IID_IUnknown))
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{
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*Output = &This->Header.OuterUnknown;
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_InterlockedIncrement(&This->ref);
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return STATUS_SUCCESS;
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}
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return STATUS_UNSUCCESSFUL;
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}
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ULONG
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NTAPI
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IKsControl_fnAddRef(
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IKsControl * iface)
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{
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, lpVtblKsControl);
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return InterlockedIncrement(&This->ref);
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}
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ULONG
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NTAPI
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IKsControl_fnRelease(
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IKsControl * iface)
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{
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, lpVtblKsControl);
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InterlockedDecrement(&This->ref);
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/* Return new reference count */
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return This->ref;
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}
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NTSTATUS
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NTAPI
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IKsControl_fnKsProperty(
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IKsControl * iface,
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IN PKSPROPERTY Property,
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IN ULONG PropertyLength,
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IN OUT PVOID PropertyData,
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IN ULONG DataLength,
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OUT ULONG* BytesReturned)
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{
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, lpVtblKsControl);
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return KsSynchronousIoControlDevice(This->FileObject, KernelMode, IOCTL_KS_PROPERTY, Property, PropertyLength, PropertyData, DataLength, BytesReturned);
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}
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NTSTATUS
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NTAPI
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IKsControl_fnKsMethod(
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IKsControl * iface,
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IN PKSMETHOD Method,
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IN ULONG MethodLength,
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IN OUT PVOID MethodData,
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IN ULONG DataLength,
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OUT ULONG* BytesReturned)
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{
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, lpVtblKsControl);
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return KsSynchronousIoControlDevice(This->FileObject, KernelMode, IOCTL_KS_METHOD, Method, MethodLength, MethodData, DataLength, BytesReturned);
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}
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NTSTATUS
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NTAPI
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IKsControl_fnKsEvent(
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IKsControl * iface,
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IN PKSEVENT Event OPTIONAL,
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IN ULONG EventLength,
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IN OUT PVOID EventData,
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IN ULONG DataLength,
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OUT ULONG* BytesReturned)
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{
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, lpVtblKsControl);
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if (Event)
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{
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return KsSynchronousIoControlDevice(This->FileObject, KernelMode, IOCTL_KS_ENABLE_EVENT, Event, EventLength, EventData, DataLength, BytesReturned);
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}
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else
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{
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return KsSynchronousIoControlDevice(This->FileObject, KernelMode, IOCTL_KS_DISABLE_EVENT, EventData, DataLength, NULL, 0, BytesReturned);
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}
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}
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static IKsControlVtbl vt_IKsControl =
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{
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IKsControl_fnQueryInterface,
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IKsControl_fnAddRef,
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IKsControl_fnRelease,
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IKsControl_fnKsProperty,
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IKsControl_fnKsMethod,
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IKsControl_fnKsEvent
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};
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NTSTATUS
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NTAPI
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IKsFilter_fnQueryInterface(
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IKsFilter * iface,
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IN REFIID refiid,
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OUT PVOID* Output)
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{
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NTSTATUS Status;
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, Header.OuterUnknown);
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if (IsEqualGUIDAligned(refiid, &IID_IUnknown) ||
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IsEqualGUIDAligned(refiid, &IID_IKsFilter))
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{
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*Output = &This->Header.OuterUnknown;
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_InterlockedIncrement(&This->ref);
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return STATUS_SUCCESS;
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}
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else if (IsEqualGUIDAligned(refiid, &IID_IKsControl))
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{
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*Output = &This->lpVtblKsControl;
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_InterlockedIncrement(&This->ref);
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return STATUS_SUCCESS;
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}
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if (This->Header.ClientAggregate)
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{
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/* using client aggregate */
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Status = This->Header.ClientAggregate->lpVtbl->QueryInterface(This->Header.ClientAggregate, refiid, Output);
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if (NT_SUCCESS(Status))
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{
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/* client aggregate supports interface */
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return Status;
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}
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}
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DPRINT("IKsFilter_fnQueryInterface no interface\n");
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return STATUS_NOT_SUPPORTED;
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}
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ULONG
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NTAPI
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IKsFilter_fnAddRef(
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IKsFilter * iface)
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{
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, Header.OuterUnknown);
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return InterlockedIncrement(&This->ref);
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}
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ULONG
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NTAPI
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IKsFilter_fnRelease(
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IKsFilter * iface)
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{
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, Header.OuterUnknown);
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InterlockedDecrement(&This->ref);
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if (This->ref == 0)
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{
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FreeItem(This);
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return 0;
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}
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/* Return new reference count */
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return This->ref;
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}
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PKSFILTER
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NTAPI
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IKsFilter_fnGetStruct(
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IKsFilter * iface)
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{
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, Header.OuterUnknown);
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return &This->Filter;
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}
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BOOL
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NTAPI
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IKsFilter_fnDoAllNecessaryPinsExist(
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IKsFilter * iface)
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{
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UNIMPLEMENTED;
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return FALSE;
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}
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NTSTATUS
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NTAPI
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IKsFilter_fnCreateNode(
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IKsFilter * iface,
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IN PIRP Irp,
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IN IKsPin * Pin,
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IN PLIST_ENTRY ListEntry)
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{
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UNIMPLEMENTED;
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return STATUS_NOT_IMPLEMENTED;
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}
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NTSTATUS
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NTAPI
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IKsFilter_fnBindProcessPinsToPipeSection(
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IKsFilter * iface,
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IN struct KSPROCESSPIPESECTION *Section,
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IN PVOID Create,
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IN PKSPIN KsPin,
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OUT IKsPin **Pin,
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OUT PKSGATE *OutGate)
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{
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UNIMPLEMENTED;
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return STATUS_NOT_IMPLEMENTED;
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}
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NTSTATUS
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NTAPI
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IKsFilter_fnUnbindProcessPinsFromPipeSection(
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IKsFilter * iface,
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IN struct KSPROCESSPIPESECTION *Section)
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{
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UNIMPLEMENTED;
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return STATUS_NOT_IMPLEMENTED;
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}
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NTSTATUS
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NTAPI
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IKsFilter_fnAddProcessPin(
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IKsFilter * iface,
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IN PKSPROCESSPIN ProcessPin)
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{
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NTSTATUS Status;
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IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, Header.OuterUnknown);
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/* first acquire processing mutex */
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KeWaitForSingleObject(&This->ProcessingMutex, Executive, KernelMode, FALSE, NULL);
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/* sanity check */
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ASSERT(This->Filter.Descriptor->PinDescriptorsCount > ProcessPin->Pin->Id);
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/* allocate new process pin array */
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Status = _KsEdit(This->Filter.Bag, (PVOID*)&This->ProcessPinIndex[ProcessPin->Pin->Id].Pins,
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(This->Filter.Descriptor->PinDescriptorsCount + 1) * sizeof(PVOID),
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This->Filter.Descriptor->PinDescriptorsCount * sizeof(PVOID),
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0);
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if (NT_SUCCESS(Status))
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{
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/* store process pin */
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This->ProcessPinIndex[ProcessPin->Pin->Id].Pins[This->ProcessPinIndex[ProcessPin->Pin->Id].Count] = ProcessPin;
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This->ProcessPinIndex[ProcessPin->Pin->Id].Count++;
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}
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/* release process mutex */
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KeReleaseMutex(&This->ProcessingMutex, FALSE);
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return Status;
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
IKsFilter_fnRemoveProcessPin(
|
|
IKsFilter * iface,
|
|
IN PKSPROCESSPIN ProcessPin)
|
|
{
|
|
ULONG Index;
|
|
ULONG Count;
|
|
PKSPROCESSPIN * Pins;
|
|
|
|
IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, Header.OuterUnknown);
|
|
|
|
/* first acquire processing mutex */
|
|
KeWaitForSingleObject(&This->ProcessingMutex, Executive, KernelMode, FALSE, NULL);
|
|
|
|
/* sanity check */
|
|
ASSERT(ProcessPin->Pin);
|
|
ASSERT(ProcessPin->Pin->Id);
|
|
|
|
Count = This->ProcessPinIndex[ProcessPin->Pin->Id].Count;
|
|
Pins = This->ProcessPinIndex[ProcessPin->Pin->Id].Pins;
|
|
|
|
/* search for current process pin */
|
|
for(Index = 0; Index < Count; Index++)
|
|
{
|
|
if (Pins[Index] == ProcessPin)
|
|
{
|
|
RtlMoveMemory(&Pins[Index], &Pins[Index + 1], (Count - (Index + 1)) * sizeof(PVOID));
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
/* decrement pin count */
|
|
This->ProcessPinIndex[ProcessPin->Pin->Id].Count--;
|
|
|
|
if (!This->ProcessPinIndex[ProcessPin->Pin->Id].Count)
|
|
{
|
|
/* clear entry object bag will delete it */
|
|
This->ProcessPinIndex[ProcessPin->Pin->Id].Pins = NULL;
|
|
}
|
|
|
|
/* release process mutex */
|
|
KeReleaseMutex(&This->ProcessingMutex, FALSE);
|
|
|
|
/* done */
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
BOOL
|
|
NTAPI
|
|
IKsFilter_fnReprepareProcessPipeSection(
|
|
IKsFilter * iface,
|
|
IN struct KSPROCESSPIPESECTION *PipeSection,
|
|
IN PULONG Data)
|
|
{
|
|
UNIMPLEMENTED;
|
|
return FALSE;
|
|
}
|
|
|
|
VOID
|
|
NTAPI
|
|
IKsFilter_fnDeliverResetState(
|
|
IKsFilter * iface,
|
|
IN struct KSPROCESSPIPESECTION *PipeSection,
|
|
IN KSRESET ResetState)
|
|
{
|
|
UNIMPLEMENTED;
|
|
}
|
|
|
|
BOOL
|
|
NTAPI
|
|
IKsFilter_fnIsFrameHolding(
|
|
IKsFilter * iface)
|
|
{
|
|
UNIMPLEMENTED;
|
|
return FALSE;
|
|
}
|
|
|
|
VOID
|
|
NTAPI
|
|
IKsFilter_fnRegisterForCopyCallbacks(
|
|
IKsFilter * iface,
|
|
IKsQueue *Queue,
|
|
BOOL Register)
|
|
{
|
|
UNIMPLEMENTED;
|
|
}
|
|
|
|
PKSPROCESSPIN_INDEXENTRY
|
|
NTAPI
|
|
IKsFilter_fnGetProcessDispatch(
|
|
IKsFilter * iface)
|
|
{
|
|
IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(iface, IKsFilterImpl, Header.OuterUnknown);
|
|
|
|
return This->ProcessPinIndex;
|
|
}
|
|
|
|
static IKsFilterVtbl vt_IKsFilter =
|
|
{
|
|
IKsFilter_fnQueryInterface,
|
|
IKsFilter_fnAddRef,
|
|
IKsFilter_fnRelease,
|
|
IKsFilter_fnGetStruct,
|
|
IKsFilter_fnDoAllNecessaryPinsExist,
|
|
IKsFilter_fnCreateNode,
|
|
IKsFilter_fnBindProcessPinsToPipeSection,
|
|
IKsFilter_fnUnbindProcessPinsFromPipeSection,
|
|
IKsFilter_fnAddProcessPin,
|
|
IKsFilter_fnRemoveProcessPin,
|
|
IKsFilter_fnReprepareProcessPipeSection,
|
|
IKsFilter_fnDeliverResetState,
|
|
IKsFilter_fnIsFrameHolding,
|
|
IKsFilter_fnRegisterForCopyCallbacks,
|
|
IKsFilter_fnGetProcessDispatch
|
|
};
|
|
|
|
NTSTATUS
|
|
IKsFilter_GetFilterFromIrp(
|
|
IN PIRP Irp,
|
|
OUT IKsFilter **Filter)
|
|
{
|
|
PIO_STACK_LOCATION IoStack;
|
|
PKSIOBJECT_HEADER ObjectHeader;
|
|
NTSTATUS Status;
|
|
|
|
/* get current irp stack */
|
|
IoStack = IoGetCurrentIrpStackLocation(Irp);
|
|
|
|
/* sanity check */
|
|
ASSERT(IoStack->FileObject != NULL);
|
|
|
|
ObjectHeader = (PKSIOBJECT_HEADER)IoStack->FileObject->FsContext2;
|
|
|
|
/* sanity is important */
|
|
ASSERT(ObjectHeader != NULL);
|
|
ASSERT(ObjectHeader->Type == KsObjectTypeFilter);
|
|
ASSERT(ObjectHeader->Unknown != NULL);
|
|
|
|
/* get our private interface */
|
|
Status = ObjectHeader->Unknown->lpVtbl->QueryInterface(ObjectHeader->Unknown, &IID_IKsFilter, (PVOID*)Filter);
|
|
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
/* something is wrong here */
|
|
DPRINT1("KS: Misbehaving filter %p\n", ObjectHeader->Unknown);
|
|
Irp->IoStatus.Status = Status;
|
|
|
|
/* complete and forget irp */
|
|
CompleteRequest(Irp, IO_NO_INCREMENT);
|
|
return Status;
|
|
}
|
|
return Status;
|
|
}
|
|
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
IKsFilter_DispatchClose(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp)
|
|
{
|
|
IKsFilter * Filter;
|
|
IKsFilterImpl * This;
|
|
NTSTATUS Status;
|
|
|
|
/* obtain filter from object header */
|
|
Status = IKsFilter_GetFilterFromIrp(Irp, &Filter);
|
|
if (!NT_SUCCESS(Status))
|
|
return Status;
|
|
|
|
/* get our real implementation */
|
|
This = (IKsFilterImpl*)CONTAINING_RECORD(Filter, IKsFilterImpl, Header.OuterUnknown);
|
|
|
|
/* does the driver support notifications */
|
|
if (This->Filter.Descriptor && This->Filter.Descriptor->Dispatch && This->Filter.Descriptor->Dispatch->Close)
|
|
{
|
|
/* call driver's filter close function */
|
|
Status = This->Filter.Descriptor->Dispatch->Close(&This->Filter, Irp);
|
|
}
|
|
|
|
if (NT_SUCCESS(Status) && Status != STATUS_PENDING)
|
|
{
|
|
/* save the result */
|
|
Irp->IoStatus.Status = Status;
|
|
/* complete irp */
|
|
CompleteRequest(Irp, IO_NO_INCREMENT);
|
|
|
|
/* remove our instance from the filter factory */
|
|
IKsFilter_RemoveFilterFromFilterFactory(This, This->Factory);
|
|
|
|
/* free object header */
|
|
KsFreeObjectHeader(This->ObjectHeader);
|
|
}
|
|
else
|
|
{
|
|
/* complete and forget */
|
|
Irp->IoStatus.Status = Status;
|
|
/* complete irp */
|
|
CompleteRequest(Irp, IO_NO_INCREMENT);
|
|
}
|
|
|
|
/* done */
|
|
return Status;
|
|
}
|
|
|
|
NTSTATUS
|
|
KspHandlePropertyInstances(
|
|
IN PIO_STATUS_BLOCK IoStatus,
|
|
IN PKSIDENTIFIER Request,
|
|
IN OUT PVOID Data,
|
|
IN IKsFilterImpl * This,
|
|
IN BOOL Global)
|
|
{
|
|
KSPIN_CINSTANCES * Instances;
|
|
KSP_PIN * Pin = (KSP_PIN*)Request;
|
|
|
|
if (!This->Filter.Descriptor || !This->Filter.Descriptor->PinDescriptorsCount)
|
|
{
|
|
/* no filter / pin descriptor */
|
|
IoStatus->Status = STATUS_NOT_IMPLEMENTED;
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
/* ignore custom structs for now */
|
|
ASSERT(This->Filter.Descriptor->PinDescriptorSize == sizeof(KSPIN_DESCRIPTOR_EX));
|
|
ASSERT(This->Filter.Descriptor->PinDescriptorsCount > Pin->PinId);
|
|
|
|
Instances = (KSPIN_CINSTANCES*)Data;
|
|
/* max instance count */
|
|
Instances->PossibleCount = This->Filter.Descriptor->PinDescriptors[Pin->PinId].InstancesPossible;
|
|
/* current instance count */
|
|
Instances->CurrentCount = This->PinInstanceCount[Pin->PinId];
|
|
|
|
IoStatus->Information = sizeof(KSPIN_CINSTANCES);
|
|
IoStatus->Status = STATUS_SUCCESS;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
NTSTATUS
|
|
KspHandleNecessaryPropertyInstances(
|
|
IN PIO_STATUS_BLOCK IoStatus,
|
|
IN PKSIDENTIFIER Request,
|
|
IN OUT PVOID Data,
|
|
IN IKsFilterImpl * This)
|
|
{
|
|
PULONG Result;
|
|
KSP_PIN * Pin = (KSP_PIN*)Request;
|
|
|
|
if (!This->Filter.Descriptor || !This->Filter.Descriptor->PinDescriptorsCount)
|
|
{
|
|
/* no filter / pin descriptor */
|
|
IoStatus->Status = STATUS_NOT_IMPLEMENTED;
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
/* ignore custom structs for now */
|
|
ASSERT(This->Filter.Descriptor->PinDescriptorSize == sizeof(KSPIN_DESCRIPTOR_EX));
|
|
ASSERT(This->Filter.Descriptor->PinDescriptorsCount > Pin->PinId);
|
|
|
|
Result = (PULONG)Data;
|
|
*Result = This->Filter.Descriptor->PinDescriptors[Pin->PinId].InstancesNecessary;
|
|
|
|
IoStatus->Information = sizeof(ULONG);
|
|
IoStatus->Status = STATUS_SUCCESS;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
NTSTATUS
|
|
KspHandleDataIntersection(
|
|
IN PIRP Irp,
|
|
IN PIO_STATUS_BLOCK IoStatus,
|
|
IN PKSIDENTIFIER Request,
|
|
IN OUT PVOID Data,
|
|
IN ULONG DataLength,
|
|
IN IKsFilterImpl * This)
|
|
{
|
|
PKSMULTIPLE_ITEM MultipleItem;
|
|
PKSDATARANGE DataRange;
|
|
NTSTATUS Status = STATUS_NO_MATCH;
|
|
ULONG Index, Length;
|
|
PIO_STACK_LOCATION IoStack;
|
|
KSP_PIN * Pin = (KSP_PIN*)Request;
|
|
|
|
/* get stack location */
|
|
IoStack = IoGetCurrentIrpStackLocation(Irp);
|
|
|
|
/* sanity check */
|
|
ASSERT(DataLength == IoStack->Parameters.DeviceIoControl.OutputBufferLength);
|
|
|
|
/* Access parameters */
|
|
MultipleItem = (PKSMULTIPLE_ITEM)(Pin + 1);
|
|
DataRange = (PKSDATARANGE)(MultipleItem + 1);
|
|
|
|
/* FIXME make sure its 64 bit aligned */
|
|
ASSERT(((ULONG_PTR)DataRange & 0x7) == 0);
|
|
|
|
if (!This->Filter.Descriptor || !This->Filter.Descriptor->PinDescriptorsCount)
|
|
{
|
|
/* no filter / pin descriptor */
|
|
IoStatus->Status = STATUS_NOT_IMPLEMENTED;
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
/* ignore custom structs for now */
|
|
ASSERT(This->Filter.Descriptor->PinDescriptorSize == sizeof(KSPIN_DESCRIPTOR_EX));
|
|
ASSERT(This->Filter.Descriptor->PinDescriptorsCount > Pin->PinId);
|
|
|
|
if (This->Filter.Descriptor->PinDescriptors[Pin->PinId].IntersectHandler == NULL ||
|
|
This->Filter.Descriptor->PinDescriptors[Pin->PinId].PinDescriptor.DataRanges == NULL ||
|
|
This->Filter.Descriptor->PinDescriptors[Pin->PinId].PinDescriptor.DataRangesCount == 0)
|
|
{
|
|
/* no driver supported intersect handler / no provided data ranges */
|
|
IoStatus->Status = STATUS_NOT_IMPLEMENTED;
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
for(Index = 0; Index < MultipleItem->Count; Index++)
|
|
{
|
|
UNICODE_STRING MajorFormat, SubFormat, Specifier;
|
|
/* convert the guid to string */
|
|
RtlStringFromGUID(&DataRange->MajorFormat, &MajorFormat);
|
|
RtlStringFromGUID(&DataRange->SubFormat, &SubFormat);
|
|
RtlStringFromGUID(&DataRange->Specifier, &Specifier);
|
|
|
|
DPRINT("KspHandleDataIntersection Index %lu PinId %lu MajorFormat %S SubFormat %S Specifier %S FormatSize %lu SampleSize %lu Align %lu Flags %lx Reserved %lx DataLength %lu\n", Index, Pin->PinId, MajorFormat.Buffer, SubFormat.Buffer, Specifier.Buffer,
|
|
DataRange->FormatSize, DataRange->SampleSize, DataRange->Alignment, DataRange->Flags, DataRange->Reserved, DataLength);
|
|
|
|
/* FIXME implement KsPinDataIntersectionEx */
|
|
/* Call miniport's proprietary handler */
|
|
Status = This->Filter.Descriptor->PinDescriptors[Pin->PinId].IntersectHandler(&This->Filter,
|
|
Irp,
|
|
Pin,
|
|
DataRange,
|
|
This->Filter.Descriptor->PinDescriptors[Pin->PinId].PinDescriptor.DataRanges[0], /* HACK */
|
|
DataLength,
|
|
Data,
|
|
&Length);
|
|
DPRINT("KspHandleDataIntersection Status %lx\n", Status);
|
|
|
|
if (Status == STATUS_SUCCESS || Status == STATUS_BUFFER_OVERFLOW || Status == STATUS_BUFFER_TOO_SMALL)
|
|
{
|
|
ASSERT(Length);
|
|
IoStatus->Information = Length;
|
|
break;
|
|
}
|
|
|
|
DataRange = (PKSDATARANGE)((PUCHAR)DataRange + DataRange->FormatSize);
|
|
/* FIXME make sure its 64 bit aligned */
|
|
ASSERT(((ULONG_PTR)DataRange & 0x7) == 0);
|
|
}
|
|
IoStatus->Status = Status;
|
|
return Status;
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
FilterTopologyPropertyHandler(
|
|
IN PIRP Irp,
|
|
IN PKSIDENTIFIER Request,
|
|
IN OUT PVOID Data)
|
|
{
|
|
IKsFilterImpl * This;
|
|
|
|
/* get filter implementation */
|
|
This = (IKsFilterImpl*)KSPROPERTY_ITEM_IRP_STORAGE(Irp);
|
|
|
|
/* sanity check */
|
|
ASSERT(This);
|
|
|
|
return KsTopologyPropertyHandler(Irp, Request, Data, &This->Topology);
|
|
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
FilterGeneralComponentIdHandler(
|
|
IN PIRP Irp,
|
|
IN PKSIDENTIFIER Request,
|
|
IN OUT PVOID Data)
|
|
{
|
|
PIO_STACK_LOCATION IoStack;
|
|
IKsFilterImpl * This;
|
|
|
|
/* get filter implementation */
|
|
This = (IKsFilterImpl*)KSPROPERTY_ITEM_IRP_STORAGE(Irp);
|
|
|
|
/* sanity check */
|
|
ASSERT(This);
|
|
|
|
/* get current stack location */
|
|
IoStack = IoGetCurrentIrpStackLocation(Irp);
|
|
ASSERT(IoStack->Parameters.DeviceIoControl.OutputBufferLength >= sizeof(KSCOMPONENTID));
|
|
|
|
if (This->Filter.Descriptor->ComponentId != NULL)
|
|
{
|
|
RtlMoveMemory(Data, This->Filter.Descriptor->ComponentId, sizeof(KSCOMPONENTID));
|
|
Irp->IoStatus.Information = sizeof(KSCOMPONENTID);
|
|
return STATUS_SUCCESS;
|
|
}
|
|
else
|
|
{
|
|
/* not valid */
|
|
return STATUS_NOT_FOUND;
|
|
}
|
|
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
FilterPinPropertyHandler(
|
|
IN PIRP Irp,
|
|
IN PKSIDENTIFIER Request,
|
|
IN OUT PVOID Data)
|
|
{
|
|
PIO_STACK_LOCATION IoStack;
|
|
IKsFilterImpl * This;
|
|
NTSTATUS Status = STATUS_UNSUCCESSFUL;
|
|
|
|
/* get filter implementation */
|
|
This = (IKsFilterImpl*)KSPROPERTY_ITEM_IRP_STORAGE(Irp);
|
|
|
|
/* sanity check */
|
|
ASSERT(This);
|
|
|
|
/* get current stack location */
|
|
IoStack = IoGetCurrentIrpStackLocation(Irp);
|
|
|
|
switch(Request->Id)
|
|
{
|
|
case KSPROPERTY_PIN_CTYPES:
|
|
case KSPROPERTY_PIN_DATAFLOW:
|
|
case KSPROPERTY_PIN_DATARANGES:
|
|
case KSPROPERTY_PIN_INTERFACES:
|
|
case KSPROPERTY_PIN_MEDIUMS:
|
|
case KSPROPERTY_PIN_COMMUNICATION:
|
|
case KSPROPERTY_PIN_CATEGORY:
|
|
case KSPROPERTY_PIN_NAME:
|
|
case KSPROPERTY_PIN_CONSTRAINEDDATARANGES:
|
|
Status = KspPinPropertyHandler(Irp, Request, Data, This->Filter.Descriptor->PinDescriptorsCount, (const KSPIN_DESCRIPTOR*)This->Filter.Descriptor->PinDescriptors, This->Filter.Descriptor->PinDescriptorSize);
|
|
break;
|
|
case KSPROPERTY_PIN_GLOBALCINSTANCES:
|
|
Status = KspHandlePropertyInstances(&Irp->IoStatus, Request, Data, This, TRUE);
|
|
break;
|
|
case KSPROPERTY_PIN_CINSTANCES:
|
|
Status = KspHandlePropertyInstances(&Irp->IoStatus, Request, Data, This, FALSE);
|
|
break;
|
|
case KSPROPERTY_PIN_NECESSARYINSTANCES:
|
|
Status = KspHandleNecessaryPropertyInstances(&Irp->IoStatus, Request, Data, This);
|
|
break;
|
|
|
|
case KSPROPERTY_PIN_DATAINTERSECTION:
|
|
Status = KspHandleDataIntersection(Irp, &Irp->IoStatus, Request, Data, IoStack->Parameters.DeviceIoControl.OutputBufferLength, This);
|
|
break;
|
|
default:
|
|
UNIMPLEMENTED;
|
|
Status = STATUS_NOT_FOUND;
|
|
}
|
|
DPRINT("KspPinPropertyHandler Pins %lu Request->Id %lu Status %lx\n", This->Filter.Descriptor->PinDescriptorsCount, Request->Id, Status);
|
|
|
|
|
|
return Status;
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
IKsFilter_DispatchDeviceIoControl(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp)
|
|
{
|
|
PIO_STACK_LOCATION IoStack;
|
|
IKsFilter * Filter;
|
|
IKsFilterImpl * This;
|
|
NTSTATUS Status;
|
|
PKSFILTER FilterInstance;
|
|
UNICODE_STRING GuidString;
|
|
PKSPROPERTY Property;
|
|
ULONG SetCount = 0;
|
|
PKSP_NODE NodeProperty;
|
|
PKSNODE_DESCRIPTOR NodeDescriptor;
|
|
|
|
/* obtain filter from object header */
|
|
Status = IKsFilter_GetFilterFromIrp(Irp, &Filter);
|
|
if (!NT_SUCCESS(Status))
|
|
return Status;
|
|
|
|
/* get our real implementation */
|
|
This = (IKsFilterImpl*)CONTAINING_RECORD(Filter, IKsFilterImpl, Header.OuterUnknown);
|
|
|
|
/* current irp stack */
|
|
IoStack = IoGetCurrentIrpStackLocation(Irp);
|
|
|
|
/* get property from input buffer */
|
|
Property = (PKSPROPERTY)IoStack->Parameters.DeviceIoControl.Type3InputBuffer;
|
|
|
|
/* get filter instance */
|
|
FilterInstance = Filter->lpVtbl->GetStruct(Filter);
|
|
|
|
/* sanity check */
|
|
ASSERT(IoStack->Parameters.DeviceIoControl.InputBufferLength >= sizeof(KSIDENTIFIER));
|
|
ASSERT(FilterInstance);
|
|
ASSERT(FilterInstance->Descriptor);
|
|
ASSERT(FilterInstance->Descriptor->AutomationTable);
|
|
|
|
/* acquire control mutex */
|
|
KeWaitForSingleObject(This->Header.ControlMutex, Executive, KernelMode, FALSE, NULL);
|
|
|
|
if (IoStack->Parameters.DeviceIoControl.IoControlCode == IOCTL_KS_METHOD)
|
|
{
|
|
const KSMETHOD_SET *MethodSet = NULL;
|
|
ULONG MethodItemSize = 0;
|
|
|
|
/* check if the driver supports method sets */
|
|
if (FilterInstance->Descriptor->AutomationTable->MethodSetsCount)
|
|
{
|
|
SetCount = FilterInstance->Descriptor->AutomationTable->MethodSetsCount;
|
|
MethodSet = FilterInstance->Descriptor->AutomationTable->MethodSets;
|
|
MethodItemSize = FilterInstance->Descriptor->AutomationTable->MethodItemSize;
|
|
}
|
|
|
|
/* call method set handler */
|
|
Status = KspMethodHandlerWithAllocator(Irp, SetCount, MethodSet, NULL, MethodItemSize);
|
|
}
|
|
else if (IoStack->Parameters.DeviceIoControl.IoControlCode == IOCTL_KS_PROPERTY)
|
|
{
|
|
const KSPROPERTY_SET *PropertySet = NULL;
|
|
ULONG PropertyItemSize = 0;
|
|
|
|
/* check if the driver supports method sets */
|
|
if (Property->Flags & KSPROPERTY_TYPE_TOPOLOGY)
|
|
{
|
|
ASSERT(IoStack->Parameters.DeviceIoControl.InputBufferLength >= sizeof(KSP_NODE));
|
|
NodeProperty = (PKSP_NODE)Property;
|
|
NodeDescriptor = (PKSNODE_DESCRIPTOR)((ULONG_PTR)FilterInstance->Descriptor->NodeDescriptors + FilterInstance->Descriptor->NodeDescriptorSize * NodeProperty->NodeId);
|
|
if (NodeDescriptor->AutomationTable != NULL)
|
|
{
|
|
SetCount = NodeDescriptor->AutomationTable->PropertySetsCount;
|
|
PropertySet = NodeDescriptor->AutomationTable->PropertySets;
|
|
PropertyItemSize = 0;
|
|
}
|
|
}
|
|
else if (FilterInstance->Descriptor->AutomationTable->PropertySetsCount)
|
|
{
|
|
SetCount = FilterInstance->Descriptor->AutomationTable->PropertySetsCount;
|
|
PropertySet = FilterInstance->Descriptor->AutomationTable->PropertySets;
|
|
PropertyItemSize = FilterInstance->Descriptor->AutomationTable->PropertyItemSize;
|
|
// FIXME: handle variable sized property items
|
|
ASSERT(PropertyItemSize == sizeof(KSPROPERTY_ITEM));
|
|
PropertyItemSize = 0;
|
|
}
|
|
|
|
/* needed for our property handlers */
|
|
KSPROPERTY_ITEM_IRP_STORAGE(Irp) = (KSPROPERTY_ITEM*)This;
|
|
|
|
/* call property handler */
|
|
Status = KspPropertyHandler(Irp, SetCount, PropertySet, NULL, PropertyItemSize);
|
|
}
|
|
else
|
|
{
|
|
/* sanity check */
|
|
ASSERT(IoStack->Parameters.DeviceIoControl.IoControlCode == IOCTL_KS_ENABLE_EVENT ||
|
|
IoStack->Parameters.DeviceIoControl.IoControlCode == IOCTL_KS_DISABLE_EVENT);
|
|
|
|
if (IoStack->Parameters.DeviceIoControl.IoControlCode == IOCTL_KS_ENABLE_EVENT)
|
|
{
|
|
/* call enable event handlers */
|
|
Status = KspEnableEvent(Irp,
|
|
FilterInstance->Descriptor->AutomationTable->EventSetsCount,
|
|
(PKSEVENT_SET)FilterInstance->Descriptor->AutomationTable->EventSets,
|
|
&This->Header.EventList,
|
|
KSEVENTS_SPINLOCK,
|
|
(PVOID)&This->Header.EventListLock,
|
|
NULL,
|
|
FilterInstance->Descriptor->AutomationTable->EventItemSize);
|
|
}
|
|
else
|
|
{
|
|
/* disable event handler */
|
|
Status = KsDisableEvent(Irp, &This->Header.EventList, KSEVENTS_SPINLOCK, &This->Header.EventListLock);
|
|
}
|
|
}
|
|
|
|
RtlStringFromGUID(&Property->Set, &GuidString);
|
|
DPRINT("IKsFilter_DispatchDeviceIoControl property PinCount %x\n", FilterInstance->Descriptor->PinDescriptorsCount);
|
|
DPRINT("IKsFilter_DispatchDeviceIoControl property Set |%S| Id %u Flags %x Status %lx ResultLength %lu\n", GuidString.Buffer, Property->Id, Property->Flags, Status, Irp->IoStatus.Information);
|
|
RtlFreeUnicodeString(&GuidString);
|
|
|
|
/* release filter */
|
|
Filter->lpVtbl->Release(Filter);
|
|
|
|
/* release control mutex */
|
|
KeReleaseMutex(This->Header.ControlMutex, FALSE);
|
|
|
|
if (Status != STATUS_PENDING)
|
|
{
|
|
Irp->IoStatus.Status = Status;
|
|
CompleteRequest(Irp, IO_NO_INCREMENT);
|
|
}
|
|
|
|
/* done */
|
|
return Status;
|
|
}
|
|
|
|
static KSDISPATCH_TABLE DispatchTable =
|
|
{
|
|
IKsFilter_DispatchDeviceIoControl,
|
|
KsDispatchInvalidDeviceRequest,
|
|
KsDispatchInvalidDeviceRequest,
|
|
KsDispatchInvalidDeviceRequest,
|
|
IKsFilter_DispatchClose,
|
|
KsDispatchQuerySecurity,
|
|
KsDispatchSetSecurity,
|
|
KsDispatchFastIoDeviceControlFailure,
|
|
KsDispatchFastReadFailure,
|
|
KsDispatchFastReadFailure,
|
|
};
|
|
|
|
|
|
NTSTATUS
|
|
IKsFilter_CreateDescriptors(
|
|
IKsFilterImpl * This,
|
|
KSFILTER_DESCRIPTOR* FilterDescriptor)
|
|
{
|
|
ULONG Index = 0;
|
|
NTSTATUS Status;
|
|
PKSNODE_DESCRIPTOR NodeDescriptor;
|
|
|
|
/* initialize pin descriptors */
|
|
This->FirstPin = NULL;
|
|
This->PinInstanceCount = NULL;
|
|
This->ProcessPinIndex = NULL;
|
|
|
|
/* initialize topology descriptor */
|
|
This->Topology.CategoriesCount = FilterDescriptor->CategoriesCount;
|
|
This->Topology.Categories = FilterDescriptor->Categories;
|
|
This->Topology.TopologyNodesCount = FilterDescriptor->NodeDescriptorsCount;
|
|
This->Topology.TopologyConnectionsCount = FilterDescriptor->ConnectionsCount;
|
|
This->Topology.TopologyConnections = FilterDescriptor->Connections;
|
|
|
|
/* are there any templates */
|
|
if (FilterDescriptor->PinDescriptorsCount)
|
|
{
|
|
/* sanity check */
|
|
ASSERT(FilterDescriptor->PinDescriptors);
|
|
|
|
/* FIXME handle variable sized pin descriptors */
|
|
ASSERT(FilterDescriptor->PinDescriptorSize == sizeof(KSPIN_DESCRIPTOR_EX));
|
|
|
|
/* store pin descriptors ex */
|
|
Status = _KsEdit(This->Filter.Bag, (PVOID*)&This->Filter.Descriptor->PinDescriptors, FilterDescriptor->PinDescriptorSize * FilterDescriptor->PinDescriptorsCount,
|
|
FilterDescriptor->PinDescriptorSize * FilterDescriptor->PinDescriptorsCount, 0);
|
|
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT("IKsFilter_CreateDescriptors _KsEdit failed %lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
/* store pin instance count */
|
|
Status = _KsEdit(This->Filter.Bag, (PVOID*)&This->PinInstanceCount, sizeof(ULONG) * FilterDescriptor->PinDescriptorsCount,
|
|
sizeof(ULONG) * FilterDescriptor->PinDescriptorsCount, 0);
|
|
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT("IKsFilter_CreateDescriptors _KsEdit failed %lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
/* store instantiated pin arrays */
|
|
Status = _KsEdit(This->Filter.Bag, (PVOID*)&This->FirstPin, sizeof(PVOID) * FilterDescriptor->PinDescriptorsCount,
|
|
sizeof(PVOID) * FilterDescriptor->PinDescriptorsCount, 0);
|
|
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT("IKsFilter_CreateDescriptors _KsEdit failed %lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
/* add new pin factory */
|
|
RtlMoveMemory((PVOID)This->Filter.Descriptor->PinDescriptors, FilterDescriptor->PinDescriptors, FilterDescriptor->PinDescriptorSize * FilterDescriptor->PinDescriptorsCount);
|
|
|
|
/* allocate process pin index */
|
|
Status = _KsEdit(This->Filter.Bag, (PVOID*)&This->ProcessPinIndex, sizeof(KSPROCESSPIN_INDEXENTRY) * FilterDescriptor->PinDescriptorsCount,
|
|
sizeof(KSPROCESSPIN_INDEXENTRY) * FilterDescriptor->PinDescriptorsCount, 0);
|
|
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT("IKsFilter_CreateDescriptors _KsEdit failed %lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
if (FilterDescriptor->ConnectionsCount)
|
|
{
|
|
/* modify connections array */
|
|
Status = _KsEdit(This->Filter.Bag,
|
|
(PVOID*)&This->Filter.Descriptor->Connections,
|
|
FilterDescriptor->ConnectionsCount * sizeof(KSTOPOLOGY_CONNECTION),
|
|
FilterDescriptor->ConnectionsCount * sizeof(KSTOPOLOGY_CONNECTION),
|
|
0);
|
|
|
|
This->Topology.TopologyConnections = This->Filter.Descriptor->Connections;
|
|
This->Topology.TopologyConnectionsCount = ((PKSFILTER_DESCRIPTOR)This->Filter.Descriptor)->ConnectionsCount = FilterDescriptor->ConnectionsCount;
|
|
}
|
|
|
|
if (FilterDescriptor->NodeDescriptorsCount)
|
|
{
|
|
/* sanity check */
|
|
ASSERT(FilterDescriptor->NodeDescriptors);
|
|
|
|
/* sanity check */
|
|
ASSERT(FilterDescriptor->NodeDescriptorSize >= sizeof(KSNODE_DESCRIPTOR));
|
|
|
|
This->Topology.TopologyNodes = AllocateItem(NonPagedPool, sizeof(GUID) * FilterDescriptor->NodeDescriptorsCount);
|
|
/* allocate topology node types array */
|
|
if (!This->Topology.TopologyNodes)
|
|
{
|
|
DPRINT("IKsFilter_CreateDescriptors OutOfMemory TopologyNodesCount %lu\n", FilterDescriptor->NodeDescriptorsCount);
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
This->Topology.TopologyNodesNames = AllocateItem(NonPagedPool, sizeof(GUID) * FilterDescriptor->NodeDescriptorsCount);
|
|
/* allocate topology names array */
|
|
if (!This->Topology.TopologyNodesNames)
|
|
{
|
|
FreeItem((PVOID)This->Topology.TopologyNodes);
|
|
DPRINT("IKsFilter_CreateDescriptors OutOfMemory TopologyNodesCount %lu\n", FilterDescriptor->NodeDescriptorsCount);
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
DPRINT("NodeDescriptorCount %lu\n", FilterDescriptor->NodeDescriptorsCount);
|
|
NodeDescriptor = (PKSNODE_DESCRIPTOR)FilterDescriptor->NodeDescriptors;
|
|
for(Index = 0; Index < FilterDescriptor->NodeDescriptorsCount; Index++)
|
|
{
|
|
DPRINT("Index %lu Type %p Name %p\n", Index, NodeDescriptor->Type, NodeDescriptor->Name);
|
|
|
|
/* copy topology type */
|
|
if (NodeDescriptor->Type)
|
|
RtlMoveMemory((PVOID)&This->Topology.TopologyNodes[Index], NodeDescriptor->Type, sizeof(GUID));
|
|
|
|
/* copy topology name */
|
|
if (NodeDescriptor->Name)
|
|
RtlMoveMemory((PVOID)&This->Topology.TopologyNodesNames[Index], NodeDescriptor->Name, sizeof(GUID));
|
|
|
|
// next node descriptor
|
|
NodeDescriptor = (PKSNODE_DESCRIPTOR)((ULONG_PTR)NodeDescriptor + FilterDescriptor->NodeDescriptorSize);
|
|
}
|
|
}
|
|
/* done! */
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
NTSTATUS
|
|
IKsFilter_CopyFilterDescriptor(
|
|
IKsFilterImpl * This,
|
|
const KSFILTER_DESCRIPTOR* FilterDescriptor)
|
|
{
|
|
NTSTATUS Status;
|
|
KSAUTOMATION_TABLE AutomationTable;
|
|
|
|
This->Filter.Descriptor = AllocateItem(NonPagedPool, sizeof(KSFILTER_DESCRIPTOR));
|
|
if (!This->Filter.Descriptor)
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
|
|
Status = KsAddItemToObjectBag(This->Filter.Bag, (PVOID)This->Filter.Descriptor, NULL);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
FreeItem((PVOID)This->Filter.Descriptor);
|
|
This->Filter.Descriptor = NULL;
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
/* copy filter descriptor fields */
|
|
RtlMoveMemory((PVOID)This->Filter.Descriptor, FilterDescriptor, sizeof(KSFILTER_DESCRIPTOR));
|
|
|
|
/* zero automation table */
|
|
RtlZeroMemory(&AutomationTable, sizeof(KSAUTOMATION_TABLE));
|
|
|
|
/* setup filter property sets */
|
|
AutomationTable.PropertyItemSize = sizeof(KSPROPERTY_ITEM);
|
|
AutomationTable.PropertySetsCount = 3;
|
|
AutomationTable.PropertySets = FilterPropertySet;
|
|
|
|
/* merge filter automation table */
|
|
Status = KsMergeAutomationTables((PKSAUTOMATION_TABLE*)&This->Filter.Descriptor->AutomationTable, (PKSAUTOMATION_TABLE)FilterDescriptor->AutomationTable, &AutomationTable, This->Filter.Bag);
|
|
|
|
return Status;
|
|
}
|
|
|
|
|
|
VOID
|
|
IKsFilter_AddPin(
|
|
PKSFILTER Filter,
|
|
PKSPIN Pin)
|
|
{
|
|
PKSPIN NextPin, CurPin;
|
|
PKSBASIC_HEADER BasicHeader;
|
|
IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(Filter, IKsFilterImpl, Filter);
|
|
|
|
/* sanity check */
|
|
ASSERT(Pin->Id < This->Filter.Descriptor->PinDescriptorsCount);
|
|
|
|
if (This->FirstPin[Pin->Id] == NULL)
|
|
{
|
|
/* welcome first pin */
|
|
This->FirstPin[Pin->Id] = Pin;
|
|
This->PinInstanceCount[Pin->Id]++;
|
|
return;
|
|
}
|
|
|
|
/* get first pin */
|
|
CurPin = This->FirstPin[Pin->Id];
|
|
|
|
do
|
|
{
|
|
/* get next instantiated pin */
|
|
NextPin = KsPinGetNextSiblingPin(CurPin);
|
|
if (!NextPin)
|
|
break;
|
|
|
|
NextPin = CurPin;
|
|
|
|
}while(NextPin != NULL);
|
|
|
|
/* get basic header */
|
|
BasicHeader = (PKSBASIC_HEADER)((ULONG_PTR)CurPin - sizeof(KSBASIC_HEADER));
|
|
|
|
/* store pin */
|
|
BasicHeader->Next.Pin = Pin;
|
|
}
|
|
|
|
VOID
|
|
IKsFilter_RemovePin(
|
|
PKSFILTER Filter,
|
|
PKSPIN Pin)
|
|
{
|
|
PKSPIN NextPin, CurPin, LastPin;
|
|
PKSBASIC_HEADER BasicHeader;
|
|
IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(Filter, IKsFilterImpl, Filter);
|
|
|
|
/* sanity check */
|
|
ASSERT(Pin->Id < This->Filter.Descriptor->PinDescriptorsCount);
|
|
|
|
/* get first pin */
|
|
CurPin = This->FirstPin[Pin->Id];
|
|
|
|
LastPin = NULL;
|
|
do
|
|
{
|
|
/* get next instantiated pin */
|
|
NextPin = KsPinGetNextSiblingPin(CurPin);
|
|
|
|
if (CurPin == Pin)
|
|
{
|
|
if (LastPin)
|
|
{
|
|
/* get basic header of last pin */
|
|
BasicHeader = (PKSBASIC_HEADER)((ULONG_PTR)LastPin - sizeof(KSBASIC_HEADER));
|
|
|
|
BasicHeader->Next.Pin = NextPin;
|
|
}
|
|
else
|
|
{
|
|
/* erase last pin */
|
|
This->FirstPin[Pin->Id] = NextPin;
|
|
}
|
|
/* decrement pin instance count */
|
|
This->PinInstanceCount[Pin->Id]--;
|
|
return;
|
|
}
|
|
|
|
if (!NextPin)
|
|
break;
|
|
|
|
LastPin = CurPin;
|
|
NextPin = CurPin;
|
|
|
|
}while(NextPin != NULL);
|
|
|
|
/* pin not found */
|
|
ASSERT(0);
|
|
}
|
|
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
IKsFilter_DispatchCreatePin(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp)
|
|
{
|
|
IKsFilterImpl * This;
|
|
PKSOBJECT_CREATE_ITEM CreateItem;
|
|
PKSPIN_CONNECT Connect;
|
|
NTSTATUS Status;
|
|
|
|
DPRINT("IKsFilter_DispatchCreatePin\n");
|
|
|
|
/* get the create item */
|
|
CreateItem = KSCREATE_ITEM_IRP_STORAGE(Irp);
|
|
|
|
/* get the filter object */
|
|
This = (IKsFilterImpl*)CreateItem->Context;
|
|
|
|
/* sanity check */
|
|
ASSERT(This->Header.Type == KsObjectTypeFilter);
|
|
|
|
/* acquire control mutex */
|
|
KeWaitForSingleObject(This->Header.ControlMutex, Executive, KernelMode, FALSE, NULL);
|
|
|
|
/* now validate the connect request */
|
|
Status = KspValidateConnectRequest(Irp, This->Filter.Descriptor->PinDescriptorsCount, (PVOID)This->Filter.Descriptor->PinDescriptors, This->Filter.Descriptor->PinDescriptorSize, &Connect);
|
|
|
|
DPRINT("IKsFilter_DispatchCreatePin KsValidateConnectRequest %lx\n", Status);
|
|
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
/* sanity check */
|
|
ASSERT(Connect->PinId < This->Filter.Descriptor->PinDescriptorsCount);
|
|
|
|
DPRINT("IKsFilter_DispatchCreatePin KsValidateConnectRequest PinId %lu CurrentInstanceCount %lu MaxPossible %lu\n", Connect->PinId,
|
|
This->PinInstanceCount[Connect->PinId],
|
|
This->Filter.Descriptor->PinDescriptors[Connect->PinId].InstancesPossible);
|
|
|
|
if (This->PinInstanceCount[Connect->PinId] < This->Filter.Descriptor->PinDescriptors[Connect->PinId].InstancesPossible)
|
|
{
|
|
/* create the pin */
|
|
Status = KspCreatePin(DeviceObject, Irp, This->Header.KsDevice, This->FilterFactory, (IKsFilter*)&This->Header.OuterUnknown, Connect, (KSPIN_DESCRIPTOR_EX*)&This->Filter.Descriptor->PinDescriptors[Connect->PinId]);
|
|
|
|
DPRINT("IKsFilter_DispatchCreatePin KspCreatePin %lx\n", Status);
|
|
}
|
|
else
|
|
{
|
|
/* maximum instance count reached, bye-bye */
|
|
Status = STATUS_UNSUCCESSFUL;
|
|
DPRINT("IKsFilter_DispatchCreatePin MaxInstance %lu CurInstance %lu %lx\n", This->Filter.Descriptor->PinDescriptors[Connect->PinId].InstancesPossible, This->PinInstanceCount[Connect->PinId]);
|
|
}
|
|
}
|
|
|
|
/* release control mutex */
|
|
KeReleaseMutex(This->Header.ControlMutex, FALSE);
|
|
|
|
if (Status != STATUS_PENDING)
|
|
{
|
|
/* complete request */
|
|
Irp->IoStatus.Status = Status;
|
|
CompleteRequest(Irp, IO_NO_INCREMENT);
|
|
}
|
|
|
|
/* done */
|
|
DPRINT("IKsFilter_DispatchCreatePin Result %lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
IKsFilter_DispatchCreateNode(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp)
|
|
{
|
|
UNIMPLEMENTED;
|
|
Irp->IoStatus.Status = STATUS_UNSUCCESSFUL;
|
|
CompleteRequest(Irp, IO_NO_INCREMENT);
|
|
return STATUS_UNSUCCESSFUL;
|
|
}
|
|
|
|
|
|
VOID
|
|
IKsFilter_AttachFilterToFilterFactory(
|
|
IKsFilterImpl * This,
|
|
PKSFILTERFACTORY FilterFactory)
|
|
{
|
|
PKSBASIC_HEADER BasicHeader;
|
|
PKSFILTER Filter;
|
|
|
|
|
|
/* get filter factory basic header */
|
|
BasicHeader = (PKSBASIC_HEADER)((ULONG_PTR)FilterFactory - sizeof(KSBASIC_HEADER));
|
|
|
|
/* sanity check */
|
|
ASSERT(BasicHeader->Type == KsObjectTypeFilterFactory);
|
|
|
|
if (BasicHeader->FirstChild.FilterFactory == NULL)
|
|
{
|
|
/* welcome first instantiated filter */
|
|
BasicHeader->FirstChild.Filter = &This->Filter;
|
|
return;
|
|
}
|
|
|
|
/* set to first entry */
|
|
Filter = BasicHeader->FirstChild.Filter;
|
|
|
|
do
|
|
{
|
|
/* get basic header */
|
|
BasicHeader = (PKSBASIC_HEADER)((ULONG_PTR)Filter - sizeof(KSBASIC_HEADER));
|
|
/* sanity check */
|
|
ASSERT(BasicHeader->Type == KsObjectTypeFilter);
|
|
|
|
if (BasicHeader->Next.Filter)
|
|
{
|
|
/* iterate to next filter factory */
|
|
Filter = BasicHeader->Next.Filter;
|
|
}
|
|
else
|
|
{
|
|
/* found last entry */
|
|
break;
|
|
}
|
|
}while(TRUE);
|
|
|
|
/* attach filter factory */
|
|
BasicHeader->Next.Filter = &This->Filter;
|
|
}
|
|
|
|
VOID
|
|
IKsFilter_RemoveFilterFromFilterFactory(
|
|
IKsFilterImpl * This,
|
|
PKSFILTERFACTORY FilterFactory)
|
|
{
|
|
PKSBASIC_HEADER BasicHeader;
|
|
PKSFILTER Filter, LastFilter;
|
|
|
|
/* get filter factory basic header */
|
|
BasicHeader = (PKSBASIC_HEADER)((ULONG_PTR)FilterFactory - sizeof(KSBASIC_HEADER));
|
|
|
|
/* sanity check */
|
|
ASSERT(BasicHeader->Type == KsObjectTypeFilterFactory);
|
|
ASSERT(BasicHeader->FirstChild.Filter != NULL);
|
|
|
|
|
|
/* set to first entry */
|
|
Filter = BasicHeader->FirstChild.Filter;
|
|
LastFilter = NULL;
|
|
|
|
do
|
|
{
|
|
if (Filter == &This->Filter)
|
|
{
|
|
if (LastFilter)
|
|
{
|
|
/* get basic header */
|
|
BasicHeader = (PKSBASIC_HEADER)((ULONG_PTR)LastFilter - sizeof(KSBASIC_HEADER));
|
|
/* remove filter instance */
|
|
BasicHeader->Next.Filter = This->Header.Next.Filter;
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
/* remove filter instance */
|
|
BasicHeader->FirstChild.Filter = This->Header.Next.Filter;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* get basic header */
|
|
BasicHeader = (PKSBASIC_HEADER)((ULONG_PTR)Filter - sizeof(KSBASIC_HEADER));
|
|
/* sanity check */
|
|
ASSERT(BasicHeader->Type == KsObjectTypeFilter);
|
|
|
|
LastFilter = Filter;
|
|
if (BasicHeader->Next.Filter)
|
|
{
|
|
/* iterate to next filter factory */
|
|
Filter = BasicHeader->Next.Filter;
|
|
}
|
|
else
|
|
{
|
|
/* filter is not in list */
|
|
ASSERT(0);
|
|
break;
|
|
}
|
|
}while(TRUE);
|
|
}
|
|
|
|
VOID
|
|
NTAPI
|
|
IKsFilter_FilterCentricWorker(
|
|
IN PVOID Ctx)
|
|
{
|
|
IKsProcessingObject * Object = (IKsProcessingObject*)Ctx;
|
|
|
|
/* sanity check */
|
|
ASSERT(Object);
|
|
|
|
/* perform work */
|
|
Object->lpVtbl->ProcessingObjectWork(Object);
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
KspCreateFilter(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp,
|
|
IN IKsFilterFactory *iface)
|
|
{
|
|
IKsFilterImpl * This;
|
|
IKsDevice *KsDevice;
|
|
PKSFILTERFACTORY Factory;
|
|
PIO_STACK_LOCATION IoStack;
|
|
PDEVICE_EXTENSION DeviceExtension;
|
|
NTSTATUS Status;
|
|
PKSOBJECT_CREATE_ITEM CreateItem;
|
|
|
|
/* get device extension */
|
|
DeviceExtension = (PDEVICE_EXTENSION)DeviceObject->DeviceExtension;
|
|
|
|
/* get the filter factory */
|
|
Factory = iface->lpVtbl->GetStruct(iface);
|
|
|
|
if (!Factory || !Factory->FilterDescriptor)
|
|
{
|
|
/* Sorry it just will not work */
|
|
return STATUS_UNSUCCESSFUL;
|
|
}
|
|
|
|
if (Factory->FilterDescriptor->Flags & KSFILTER_FLAG_DENY_USERMODE_ACCESS)
|
|
{
|
|
if (Irp->RequestorMode == UserMode)
|
|
{
|
|
/* filter not accessible from user mode */
|
|
DPRINT1("Access denied\n");
|
|
return STATUS_UNSUCCESSFUL;
|
|
}
|
|
}
|
|
|
|
/* allocate filter instance */
|
|
This = AllocateItem(NonPagedPool, sizeof(IKsFilterImpl));
|
|
if (!This)
|
|
{
|
|
DPRINT1("KspCreateFilter OutOfMemory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
/* initialize object bag */
|
|
This->Filter.Bag = AllocateItem(NonPagedPool, sizeof(KSIOBJECT_BAG));
|
|
if (!This->Filter.Bag)
|
|
{
|
|
/* no memory */
|
|
FreeItem(This);
|
|
DPRINT1("KspCreateFilter OutOfMemory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
KsDevice = (IKsDevice*)&DeviceExtension->DeviceHeader->BasicHeader.OuterUnknown;
|
|
KsDevice->lpVtbl->InitializeObjectBag(KsDevice, (PKSIOBJECT_BAG)This->Filter.Bag, NULL);
|
|
|
|
/* copy filter descriptor */
|
|
Status = IKsFilter_CopyFilterDescriptor(This, Factory->FilterDescriptor);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
/* not enough memory */
|
|
FreeItem(This->Filter.Bag);
|
|
FreeItem(This);
|
|
DPRINT("KspCreateFilter IKsFilter_CopyFilterDescriptor failed %lx\n", Status);
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
/* get current irp stack */
|
|
IoStack = IoGetCurrentIrpStackLocation(Irp);
|
|
|
|
/* allocate create items */
|
|
CreateItem = AllocateItem(NonPagedPool, sizeof(KSOBJECT_CREATE_ITEM) * 2);
|
|
if (!CreateItem)
|
|
{
|
|
/* no memory */
|
|
FreeItem(This->Filter.Bag);
|
|
FreeItem(This);
|
|
DPRINT1("KspCreateFilter OutOfMemory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
/* initialize pin create item */
|
|
CreateItem[0].Create = IKsFilter_DispatchCreatePin;
|
|
CreateItem[0].Context = (PVOID)This;
|
|
CreateItem[0].Flags = KSCREATE_ITEM_FREEONSTOP;
|
|
RtlInitUnicodeString(&CreateItem[0].ObjectClass, KSSTRING_Pin);
|
|
/* initialize node create item */
|
|
CreateItem[1].Create = IKsFilter_DispatchCreateNode;
|
|
CreateItem[1].Context = (PVOID)This;
|
|
CreateItem[1].Flags = KSCREATE_ITEM_FREEONSTOP;
|
|
RtlInitUnicodeString(&CreateItem[1].ObjectClass, KSSTRING_TopologyNode);
|
|
|
|
|
|
/* initialize filter instance */
|
|
This->ref = 1;
|
|
This->Header.OuterUnknown = (PUNKNOWN)&vt_IKsFilter;
|
|
This->lpVtblKsControl = &vt_IKsControl;
|
|
This->lpVtblKsProcessingObject = &vt_IKsProcessingObject;
|
|
|
|
This->Factory = Factory;
|
|
This->FilterFactory = iface;
|
|
This->FileObject = IoStack->FileObject;
|
|
KeInitializeMutex(&This->ProcessingMutex, 0);
|
|
|
|
/* initialize basic header */
|
|
This->Header.KsDevice = &DeviceExtension->DeviceHeader->KsDevice;
|
|
This->Header.Parent.KsFilterFactory = iface->lpVtbl->GetStruct(iface);
|
|
This->Header.Type = KsObjectTypeFilter;
|
|
This->Header.ControlMutex = &This->ControlMutex;
|
|
KeInitializeMutex(This->Header.ControlMutex, 0);
|
|
InitializeListHead(&This->Header.EventList);
|
|
KeInitializeSpinLock(&This->Header.EventListLock);
|
|
|
|
/* initialize and gate */
|
|
KsGateInitializeAnd(&This->Gate, NULL);
|
|
|
|
/* FIXME initialize and gate based on pin flags */
|
|
|
|
/* initialize work item */
|
|
ExInitializeWorkItem(&This->WorkItem, IKsFilter_FilterCentricWorker, (PVOID)This->lpVtblKsProcessingObject);
|
|
|
|
/* allocate counted work item */
|
|
Status = KsRegisterCountedWorker(HyperCriticalWorkQueue, &This->WorkItem, &This->Worker);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
/* what can go wrong, goes wrong */
|
|
DPRINT1("KsRegisterCountedWorker failed with %lx\n", Status);
|
|
FreeItem(This);
|
|
FreeItem(CreateItem);
|
|
return Status;
|
|
}
|
|
|
|
/* allocate the stream descriptors */
|
|
Status = IKsFilter_CreateDescriptors(This, (PKSFILTER_DESCRIPTOR)Factory->FilterDescriptor);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
/* what can go wrong, goes wrong */
|
|
DPRINT1("IKsFilter_CreateDescriptors failed with %lx\n", Status);
|
|
KsUnregisterWorker(This->Worker);
|
|
FreeItem(This);
|
|
FreeItem(CreateItem);
|
|
return Status;
|
|
}
|
|
|
|
|
|
|
|
/* does the filter have a filter dispatch */
|
|
if (Factory->FilterDescriptor->Dispatch)
|
|
{
|
|
/* does it have a create routine */
|
|
if (Factory->FilterDescriptor->Dispatch->Create)
|
|
{
|
|
/* now let driver initialize the filter instance */
|
|
|
|
ASSERT(This->Header.KsDevice);
|
|
ASSERT(This->Header.KsDevice->Started);
|
|
Status = Factory->FilterDescriptor->Dispatch->Create(&This->Filter, Irp);
|
|
|
|
if (!NT_SUCCESS(Status) && Status != STATUS_PENDING)
|
|
{
|
|
/* driver failed to initialize */
|
|
DPRINT1("Driver: Status %x\n", Status);
|
|
|
|
/* free filter instance */
|
|
KsUnregisterWorker(This->Worker);
|
|
FreeItem(This);
|
|
FreeItem(CreateItem);
|
|
return Status;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* now allocate the object header */
|
|
Status = KsAllocateObjectHeader((PVOID*)&This->ObjectHeader, 2, CreateItem, Irp, &DispatchTable);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
/* failed to allocate object header */
|
|
DPRINT1("Failed to allocate object header %x\n", Status);
|
|
|
|
return Status;
|
|
}
|
|
|
|
/* initialize object header extra fields */
|
|
This->ObjectHeader->Type = KsObjectTypeFilter;
|
|
This->ObjectHeader->Unknown = (PUNKNOWN)&This->Header.OuterUnknown;
|
|
This->ObjectHeader->ObjectType = (PVOID)&This->Filter;
|
|
|
|
/* attach filter to filter factory */
|
|
IKsFilter_AttachFilterToFilterFactory(This, This->Header.Parent.KsFilterFactory);
|
|
|
|
/* completed initialization */
|
|
DPRINT1("KspCreateFilter done %lx KsDevice %p\n", Status, This->Header.KsDevice);
|
|
return Status;
|
|
}
|
|
|
|
/*
|
|
@implemented
|
|
*/
|
|
KSDDKAPI
|
|
VOID
|
|
NTAPI
|
|
KsFilterAcquireProcessingMutex(
|
|
IN PKSFILTER Filter)
|
|
{
|
|
IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(Filter, IKsFilterImpl, Filter);
|
|
|
|
KeWaitForSingleObject(&This->ProcessingMutex, Executive, KernelMode, FALSE, NULL);
|
|
}
|
|
|
|
/*
|
|
@implemented
|
|
*/
|
|
KSDDKAPI
|
|
VOID
|
|
NTAPI
|
|
KsFilterReleaseProcessingMutex(
|
|
IN PKSFILTER Filter)
|
|
{
|
|
IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(Filter, IKsFilterImpl, Filter);
|
|
|
|
KeReleaseMutex(&This->ProcessingMutex, FALSE);
|
|
}
|
|
|
|
|
|
/*
|
|
@implemented
|
|
*/
|
|
KSDDKAPI
|
|
NTSTATUS
|
|
NTAPI
|
|
KsFilterAddTopologyConnections (
|
|
IN PKSFILTER Filter,
|
|
IN ULONG NewConnectionsCount,
|
|
IN const KSTOPOLOGY_CONNECTION *const NewTopologyConnections)
|
|
{
|
|
ULONG Count;
|
|
NTSTATUS Status;
|
|
IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(Filter, IKsFilterImpl, Filter);
|
|
|
|
DPRINT("KsFilterAddTopologyConnections\n");
|
|
|
|
ASSERT(This->Filter.Descriptor);
|
|
Count = This->Filter.Descriptor->ConnectionsCount + NewConnectionsCount;
|
|
|
|
|
|
/* modify connections array */
|
|
Status = _KsEdit(This->Filter.Bag,
|
|
(PVOID*)&This->Filter.Descriptor->Connections,
|
|
Count * sizeof(KSTOPOLOGY_CONNECTION),
|
|
This->Filter.Descriptor->ConnectionsCount * sizeof(KSTOPOLOGY_CONNECTION),
|
|
0);
|
|
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
/* failed */
|
|
DPRINT("KsFilterAddTopologyConnections KsEdit failed with %lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
/* FIXME verify connections */
|
|
|
|
/* copy new connections */
|
|
RtlMoveMemory((PVOID)&This->Filter.Descriptor->Connections[This->Filter.Descriptor->ConnectionsCount],
|
|
NewTopologyConnections,
|
|
NewConnectionsCount * sizeof(KSTOPOLOGY_CONNECTION));
|
|
|
|
/* update topology */
|
|
This->Topology.TopologyConnectionsCount += NewConnectionsCount;
|
|
((PKSFILTER_DESCRIPTOR)This->Filter.Descriptor)->ConnectionsCount += NewConnectionsCount;
|
|
This->Topology.TopologyConnections = This->Filter.Descriptor->Connections;
|
|
|
|
return Status;
|
|
}
|
|
|
|
/*
|
|
@implemented
|
|
*/
|
|
KSDDKAPI
|
|
VOID
|
|
NTAPI
|
|
KsFilterAttemptProcessing(
|
|
IN PKSFILTER Filter,
|
|
IN BOOLEAN Asynchronous)
|
|
{
|
|
PKSGATE Gate;
|
|
IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(Filter, IKsFilterImpl, Filter);
|
|
|
|
/* get gate */
|
|
Gate = This->lpVtblKsProcessingObject->GetAndGate((IKsProcessingObject*)This->lpVtblKsProcessingObject);
|
|
|
|
if (!KsGateCaptureThreshold(Gate))
|
|
{
|
|
/* filter control gate is closed */
|
|
return;
|
|
}
|
|
DPRINT1("processing\n");
|
|
/* try initiate processing */
|
|
This->lpVtblKsProcessingObject->Process((IKsProcessingObject*)This->lpVtblKsProcessingObject, Asynchronous);
|
|
}
|
|
|
|
/*
|
|
@unimplemented
|
|
*/
|
|
KSDDKAPI
|
|
NTSTATUS
|
|
NTAPI
|
|
KsFilterCreateNode (
|
|
IN PKSFILTER Filter,
|
|
IN const KSNODE_DESCRIPTOR *const NodeDescriptor,
|
|
OUT PULONG NodeID)
|
|
{
|
|
UNIMPLEMENTED;
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
/*
|
|
@implemented
|
|
*/
|
|
KSDDKAPI
|
|
NTSTATUS
|
|
NTAPI
|
|
KsFilterCreatePinFactory (
|
|
IN PKSFILTER Filter,
|
|
IN const KSPIN_DESCRIPTOR_EX *const InPinDescriptor,
|
|
OUT PULONG PinID)
|
|
{
|
|
ULONG Count;
|
|
NTSTATUS Status;
|
|
IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(Filter, IKsFilterImpl, Filter);
|
|
|
|
DPRINT("KsFilterCreatePinFactory\n");
|
|
|
|
/* calculate new count */
|
|
Count = This->Filter.Descriptor->PinDescriptorsCount + 1;
|
|
|
|
/* sanity check */
|
|
ASSERT(This->Filter.Descriptor->PinDescriptorSize == sizeof(KSPIN_DESCRIPTOR_EX));
|
|
|
|
/* modify pin descriptors ex array */
|
|
Status = _KsEdit(This->Filter.Bag, (PVOID*)&This->Filter.Descriptor->PinDescriptors, Count * This->Filter.Descriptor->PinDescriptorSize, This->Filter.Descriptor->PinDescriptorsCount * This->Filter.Descriptor->PinDescriptorSize, 0);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
/* failed */
|
|
DPRINT("KsFilterCreatePinFactory _KsEdit failed with %lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
/* modify pin instance count array */
|
|
Status = _KsEdit(This->Filter.Bag,(PVOID*)&This->PinInstanceCount, sizeof(ULONG) * Count, sizeof(ULONG) * This->Filter.Descriptor->PinDescriptorsCount, 0);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
/* failed */
|
|
DPRINT("KsFilterCreatePinFactory _KsEdit failed with %lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
/* modify first pin array */
|
|
Status = _KsEdit(This->Filter.Bag,(PVOID*)&This->FirstPin, sizeof(PVOID) * Count, sizeof(PVOID) * This->Filter.Descriptor->PinDescriptorsCount, 0);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
/* failed */
|
|
DPRINT("KsFilterCreatePinFactory _KsEdit failed with %lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
/* add new pin factory */
|
|
RtlMoveMemory((PVOID)&This->Filter.Descriptor->PinDescriptors[This->Filter.Descriptor->PinDescriptorsCount], InPinDescriptor, sizeof(KSPIN_DESCRIPTOR_EX));
|
|
|
|
/* allocate process pin index */
|
|
Status = _KsEdit(This->Filter.Bag, (PVOID*)&This->ProcessPinIndex, sizeof(KSPROCESSPIN_INDEXENTRY) * Count,
|
|
sizeof(KSPROCESSPIN_INDEXENTRY) * This->Filter.Descriptor->PinDescriptorsCount, 0);
|
|
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT("KsFilterCreatePinFactory _KsEdit failed %lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
/* store new pin id */
|
|
*PinID = This->Filter.Descriptor->PinDescriptorsCount;
|
|
|
|
/* increment pin descriptor count */
|
|
((PKSFILTER_DESCRIPTOR)This->Filter.Descriptor)->PinDescriptorsCount++;
|
|
|
|
|
|
DPRINT("KsFilterCreatePinFactory done\n");
|
|
return STATUS_SUCCESS;
|
|
|
|
}
|
|
|
|
/*
|
|
@unimplemented
|
|
*/
|
|
KSDDKAPI
|
|
PKSGATE
|
|
NTAPI
|
|
KsFilterGetAndGate(
|
|
IN PKSFILTER Filter)
|
|
{
|
|
IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(Filter, IKsFilterImpl, Filter);
|
|
|
|
/* return and-gate */
|
|
return &This->Gate;
|
|
}
|
|
|
|
/*
|
|
@implemented
|
|
*/
|
|
KSDDKAPI
|
|
ULONG
|
|
NTAPI
|
|
KsFilterGetChildPinCount(
|
|
IN PKSFILTER Filter,
|
|
IN ULONG PinId)
|
|
{
|
|
IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(Filter, IKsFilterImpl, Filter);
|
|
|
|
if (PinId >= This->Filter.Descriptor->PinDescriptorsCount)
|
|
{
|
|
/* index is out of bounds */
|
|
return 0;
|
|
}
|
|
/* return pin instance count */
|
|
return This->PinInstanceCount[PinId];
|
|
}
|
|
|
|
/*
|
|
@implemented
|
|
*/
|
|
KSDDKAPI
|
|
PKSPIN
|
|
NTAPI
|
|
KsFilterGetFirstChildPin(
|
|
IN PKSFILTER Filter,
|
|
IN ULONG PinId)
|
|
{
|
|
IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(Filter, IKsFilterImpl, Filter);
|
|
|
|
if (PinId >= This->Filter.Descriptor->PinDescriptorsCount)
|
|
{
|
|
/* index is out of bounds */
|
|
return NULL;
|
|
}
|
|
|
|
/* return first pin index */
|
|
return This->FirstPin[PinId];
|
|
}
|
|
|
|
/*
|
|
@implemented
|
|
*/
|
|
KSDDKAPI
|
|
VOID
|
|
NTAPI
|
|
KsFilterRegisterPowerCallbacks(
|
|
IN PKSFILTER Filter,
|
|
IN PFNKSFILTERPOWER Sleep OPTIONAL,
|
|
IN PFNKSFILTERPOWER Wake OPTIONAL)
|
|
{
|
|
IKsFilterImpl * This = (IKsFilterImpl*)CONTAINING_RECORD(Filter, IKsFilterImpl, Filter);
|
|
|
|
This->Sleep = Sleep;
|
|
This->Wake = Wake;
|
|
}
|
|
|
|
/*
|
|
@implemented
|
|
*/
|
|
KSDDKAPI
|
|
PKSFILTER
|
|
NTAPI
|
|
KsGetFilterFromIrp(
|
|
IN PIRP Irp)
|
|
{
|
|
PIO_STACK_LOCATION IoStack;
|
|
PKSIOBJECT_HEADER ObjectHeader;
|
|
|
|
DPRINT("KsGetFilterFromIrp\n");
|
|
|
|
/* get current irp stack location */
|
|
IoStack = IoGetCurrentIrpStackLocation(Irp);
|
|
|
|
/* sanity check */
|
|
ASSERT(IoStack->FileObject);
|
|
|
|
/* get object header */
|
|
ObjectHeader = (PKSIOBJECT_HEADER)IoStack->FileObject->FsContext2;
|
|
|
|
if (ObjectHeader->Type == KsObjectTypeFilter)
|
|
{
|
|
/* irp is targeted at the filter */
|
|
return (PKSFILTER)ObjectHeader->ObjectType;
|
|
}
|
|
else if (ObjectHeader->Type == KsObjectTypePin)
|
|
{
|
|
/* irp is for a pin */
|
|
return KsPinGetParentFilter((PKSPIN)ObjectHeader->ObjectType);
|
|
}
|
|
else
|
|
{
|
|
/* irp is unappropiate to retrieve a filter */
|
|
return NULL;
|
|
}
|
|
}
|