clockforward.cpp File Reference

#include "precomp.h"

Include dependency graph for clockforward.cpp:

Go to the source code of this file.

Classes
class	CKsClockForwarder

Functions
DWORD WINAPI	CKsClockForwarder_ThreadStartup (LPVOID lpParameter)
HRESULT WINAPI	CKsClockForwarder_Constructor (IUnknown *pUnkOuter, REFIID riid, LPVOID *ppv)

Variables
const GUID	IID_IKsClockForwarder = {0x877e4352, 0x6fea, 0x11d0, {0xb8, 0x63, 0x00, 0xaa, 0x00, 0xa2, 0x16, 0xa1}}

Function Documentation

CKsClockForwarder_Constructor()

HRESULT WINAPI CKsClockForwarder_Constructor	(	IUnknown *	pUnkOuter,
		REFIID	riid,
		LPVOID *	ppv
	)

Definition at line 334 of file clockforward.cpp.

{
    HRESULT hr;
    HANDLE handle;
 
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CKsClockForwarder_Constructor\n");
#endif
 
    // open default clock
    hr = KsOpenDefaultDevice(KSCATEGORY_CLOCK, GENERIC_READ | GENERIC_WRITE, &handle);
 
    if (hr != NOERROR)
    {
#ifdef KSPROXY_TRACE
         OutputDebugString("CKsClockForwarder_Constructor failed to open device\n");
#endif
         return hr;
    }
 
    CKsClockForwarder * clock = new CKsClockForwarder(handle);
 
    if (!clock)
    {
        // free clock handle
        CloseHandle(handle);
        return E_OUTOFMEMORY;
    }
 
    if (FAILED(clock->QueryInterface(riid, ppv)))
    {
        /* not supported */
        delete clock;
        return E_NOINTERFACE;
    }
 
    return NOERROR;
}

CKsClockForwarder_ThreadStartup()

DWORD WINAPI CKsClockForwarder_ThreadStartup

(

LPVOID

lpParameter

)

Definition at line 299 of file clockforward.cpp.

{
    REFERENCE_TIME Time;
    ULONG BytesReturned;
 
    CKsClockForwarder * Fwd = (CKsClockForwarder*)lpParameter;
 
    Fwd->m_ThreadStarted = TRUE;
 
    do
    {
        if (Fwd->m_PendingStop)
            break;
 
        if (Fwd->m_State != KSSTATE_RUN)
            WaitForSingleObject(Fwd->m_hEvent, INFINITE);
 
        KSPROPERTY Property;
        Property.Set = KSPROPSETID_Clock;
        Property.Id = KSPROPERTY_CLOCK_TIME;
        Property.Flags = KSPROPERTY_TYPE_SET;
 
        Fwd->m_Clock->GetTime(&Time);
        Time -= Fwd->m_Time;
 
        KsSynchronousDeviceControl(Fwd->m_Handle, IOCTL_KS_PROPERTY, (PVOID)&Property, sizeof(KSPROPERTY), &Time, sizeof(REFERENCE_TIME), &BytesReturned);
    }
    while(TRUE);
 
    Fwd->m_ThreadStarted = FALSE;
    return NOERROR;
}

Variable Documentation

IID_IKsClockForwarder

const GUID IID_IKsClockForwarder = {0x877e4352, 0x6fea, 0x11d0, {0xb8, 0x63, 0x00, 0xaa, 0x00, 0xa2, 0x16, 0xa1}}

Definition at line 11 of file clockforward.cpp.

Referenced by CKsClockForwarder::QueryInterface().