ksuser.c File Reference

#include "ksuser.h"
#include <debug.h>

Include dependency graph for ksuser.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
NTSTATUS NTAPI	KsiCreateObjectType (HANDLE hHandle, LPWSTR ObjectType, PVOID Buffer, ULONG BufferSize, ACCESS_MASK DesiredAccess, PHANDLE phHandle)
KSDDKAPI DWORD NTAPI	KsCreateAllocator (HANDLE ConnectionHandle, PKSALLOCATOR_FRAMING AllocatorFraming, PHANDLE AllocatorHandle)
KSDDKAPI DWORD NTAPI	KsCreateClock (HANDLE ConnectionHandle, PKSCLOCK_CREATE ClockCreate, PHANDLE ClockHandle)
KSDDKAPI DWORD NTAPI	KsCreatePin (HANDLE FilterHandle, PKSPIN_CONNECT Connect, ACCESS_MASK DesiredAccess, PHANDLE ConnectionHandle)
KSDDKAPI DWORD NTAPI	KsCreateTopologyNode (HANDLE ParentHandle, PKSNODE_CREATE NodeCreate, IN ACCESS_MASK DesiredAccess, OUT PHANDLE NodeHandle)
BOOL APIENTRY	DllMain (HANDLE hModule, DWORD ulreason, LPVOID lpReserved)

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 10 of file ksuser.c.

Function Documentation

DllMain()

BOOL APIENTRY DllMain	(	HANDLE	hModule,
		DWORD	ulreason,
		LPVOID	lpReserved
	)

Definition at line 256 of file ksuser.c.

{
    switch (ulreason)
    {
        case DLL_PROCESS_ATTACH:
        case DLL_THREAD_ATTACH:
        case DLL_THREAD_DETACH:
        case DLL_PROCESS_DETACH:
            break;
    }
 
    return TRUE;
}

KsCreateAllocator()

KSDDKAPI DWORD NTAPI KsCreateAllocator	(	HANDLE	ConnectionHandle,
		PKSALLOCATOR_FRAMING	AllocatorFraming,
		PHANDLE	AllocatorHandle
	)

Definition at line 107 of file ksuser.c.

{
    return KsiCreateObjectType( ConnectionHandle,
                                KSSTRING_Allocator,
                                (PVOID) AllocatorFraming,
                                sizeof(KSALLOCATOR_FRAMING),
                                GENERIC_READ,
                                AllocatorHandle);
}

Referenced by CKsAllocator::KsCreateAllocatorAndGetHandle().

KsCreateClock()

KSDDKAPI DWORD NTAPI KsCreateClock	(	HANDLE	ConnectionHandle,
		PKSCLOCK_CREATE	ClockCreate,
		PHANDLE	ClockHandle
	)

Definition at line 145 of file ksuser.c.

{
    return KsiCreateObjectType( ConnectionHandle,
                                KSSTRING_Clock,
                                (PVOID) ClockCreate,
                                sizeof(KSCLOCK_CREATE),
                                GENERIC_READ,
                                ClockHandle);
}

Referenced by CKsProxy::CreateClockInstance().

KsCreatePin()

KSDDKAPI DWORD NTAPI KsCreatePin	(	HANDLE	FilterHandle,
		PKSPIN_CONNECT	Connect,
		ACCESS_MASK	DesiredAccess,
		PHANDLE	ConnectionHandle
	)

Definition at line 192 of file ksuser.c.

{
    ULONG BufferSize = sizeof(KSPIN_CONNECT);
    PKSDATAFORMAT DataFormat = (PKSDATAFORMAT)(Connect + 1);
 
    BufferSize += DataFormat->FormatSize;
 
    return KsiCreateObjectType(FilterHandle,
                               KSSTRING_Pin,
                               Connect,
                               BufferSize,
                               DesiredAccess,
                               ConnectionHandle);
 
}

Referenced by CreateMixerPinAndSetFormat(), CreatePinCallback(), CInputPin::CreatePinHandle(), COutputPin::CreatePinHandle(), InstantiatePins(), MMixerOpenMidiPin(), MMixerOpenWavePin(), OpenPin(), and TestKs().

KsCreateTopologyNode()

KSDDKAPI DWORD NTAPI KsCreateTopologyNode	(	HANDLE	ParentHandle,
		PKSNODE_CREATE	NodeCreate,
		IN ACCESS_MASK	DesiredAccess,
		OUT PHANDLE	NodeHandle
	)

Definition at line 240 of file ksuser.c.

{
    return KsiCreateObjectType( ParentHandle,
                                KSSTRING_TopologyNode,
                                (PVOID) NodeCreate,
                                sizeof(KSNODE_CREATE),
                                DesiredAccess,
                                NodeHandle);
}

Referenced by CKsNode_Constructor().

KsiCreateObjectType()

NTSTATUS NTAPI KsiCreateObjectType	(	HANDLE	hHandle,
		LPWSTR	ObjectType,
		PVOID	Buffer,
		ULONG	BufferSize,
		ACCESS_MASK	DesiredAccess,
		PHANDLE	phHandle
	)

Definition at line 15 of file ksuser.c.

{
    NTSTATUS Status;
    SIZE_T Length;
    SIZE_T TotalSize;
    LPWSTR pStr;
    UNICODE_STRING ObjectName;
    OBJECT_ATTRIBUTES ObjectAttributes;
    IO_STATUS_BLOCK IoStatusBlock;
 
    /* get length of object type */
    Length = wcslen(ObjectType);
 
    /* get length for request */
    TotalSize = (Length * sizeof(WCHAR)) + BufferSize;
 
    /* append space for '\\'*/
    TotalSize += sizeof(WCHAR);
 
    /* allocate buffer */
    pStr = HeapAlloc(GetProcessHeap(), 0, TotalSize);
    if (!pStr)
    {
        /* out of memory */
        return ERROR_NOT_ENOUGH_MEMORY;
    }
 
    /* copy object type */
    wcscpy(pStr, ObjectType);
 
    /* append slash */
    pStr[Length] = L'\\';
 
    /* append parameters */
    memcpy(&pStr[Length+1], Buffer, BufferSize);
 
    /* initialize object name */
    ObjectName.Buffer = pStr;
    ObjectName.Length = ObjectName.MaximumLength = TotalSize;
 
    /* initialize object attributes */
    InitializeObjectAttributes(&ObjectAttributes, &ObjectName, OBJ_CASE_INSENSITIVE, hHandle, NULL);
 
    /* create the object */
    Status = NtCreateFile(phHandle, DesiredAccess, &ObjectAttributes, &IoStatusBlock, NULL, FILE_ATTRIBUTE_NORMAL, 0, 1, 0, NULL, 0);
 
    /* free buffer */
    HeapFree(GetProcessHeap(), 0, pStr);
 
    /* check for success */
    if (!NT_SUCCESS(Status))
    {
        /* failed zero handle */
        *phHandle = INVALID_HANDLE_VALUE;
 
        /* convert error code */
        Status = RtlNtStatusToDosError(Status);
    }
 
    /* done */
    return Status;
}

Referenced by KsCreateAllocator(), KsCreateClock(), KsCreatePin(), and KsCreateTopologyNode().