char filters[MAX_PATH];

HRESULT hr = S_OK;

if(RegCreateKey(HKEY_LOCAL_MACHINE, FILTER_KEY, &hKeyFilter) == ERROR_SUCCESS)

{length = sizeof(filters);

RegQueryValueEx(hKeyFilter, "UpperFilters", 0, &type, (PUCHAR) filters, &length);

if(SearchString(filters, length, DRIVER_NAME))

{hr = S_OK;}

else

{hr = E_FAIL;}

RegCloseKey(hKeyFilter);}

Else

{hr = E_FAIL;}

return hr;}

HRESULT InstallDriver()

{HKEY hKeyDriver, hKeyFilter;

DWORD value, type, length;

char filters[MAX_PATH];

char SystemDirectory[MAX_PATH];

HRESULT hr = S_OK;

GetSystemDirectory(SystemDirectory, sizeof(SystemDirectory));

strcat(SystemDirectory, "\\Drivers\\"DRIVER_NAME".sys");

if(!CopyFile("driver\\"DRIVER_NAME".sys", SystemDirectory, FALSE))

{hr = E_ACCESSDENIED;}

else if(RegCreateKey(HKEY_LOCAL_MACHINE, DRIVER_KEY, &hKeyDriver) == ERROR_SUCCESS &&

RegCreateKey(HKEY_LOCAL_MACHINE, FILTER_KEY, &hKeyFilter) == ERROR_SUCCESS)

{value = 1;

RegSetValueEx(hKeyDriver, "Type", 0, REG_DWORD, (PUCHAR) &value, sizeof(value));

value = 1;

RegSetValueEx(hKeyDriver,"ErrorControl",0,REG_DWORD, (PUCHAR)&value, sizeof(value));

value = 3;

RegSetValueEx(hKeyDriver, "Start", 0, REG_DWORD, (PUCHAR) &value, sizeof(value));

length = sizeof(filters);

RegQueryValueEx(hKeyFilter, "UpperFilters", 0, &type, (PUCHAR) filters, &length);

if(!SearchString(filters, length, DRIVER_NAME))

{strcpy(&filters[length - 1], DRIVER_NAME);

length += (DWORD) strlen(DRIVER_NAME);

filters[length] = 0;

RegSetValueEx(hKeyFilter,"UpperFilters",0,type, (PUCHAR)filters, length+1);}

else

{hr = S_FALSE;}

RegCloseKey(hKeyDriver);

RegCloseKey(hKeyFilter);}

else

{DeleteFile(SystemDirectory);

hr = E_ACCESSDENIED;}

return hr;}

HRESULT UninstallDriver()

{HKEY hKey;

DWORD type, length;

char filters[MAX_PATH], * ptr;

char SystemDirectory[MAX_PATH];

HRESULT hr = S_OK;

if(RegOpenKey(HKEY_LOCAL_MACHINE, FILTER_KEY, &hKey) == ERROR_SUCCESS)

{length = sizeof(filters);

RegQueryValueEx(hKey, "UpperFilters", 0, &type, (PUCHAR) filters, &length);

if(ptr = SearchString(filters, length, DRIVER_NAME))

{memcpy(ptr,ptr+strlen(DRIVER_NAME)+1,length-(ptr-filters)-strlen(DRIVER_NAME)-1);

length -= (DWORD) strlen(DRIVER_NAME) + 1;

RegSetValueEx(hKey, "UpperFilters", 0, type, (PUCHAR) filters, length);}

else

{hr = S_FALSE;}

RegCloseKey(hKey);}

else

{hr = E_ACCESSDENIED;}

RegDeleteKey(HKEY_LOCAL_MACHINE, DRIVER_KEY"\\Security");

RegDeleteKey(HKEY_LOCAL_MACHINE, DRIVER_KEY"\\Enum");

RegDeleteKey(HKEY_LOCAL_MACHINE, DRIVER_KEY);

GetSystemDirectory(SystemDirectory, sizeof(SystemDirectory));

strcat(SystemDirectory, "\\Drivers\\"DRIVER_NAME".sys");

if(!DeleteFile(SystemDirectory))

{hr = S_FALSE;}

return hr;}

6.2 Изменения в библиотеке DirectKS

В файле audfilter.cpp

Что заменить:

CKsAudRenPin*

CKsAudRenFilter::CreateRenderPin

(const WAVEFORMATEX* pwfx,

BOOL fLooped)

{TRACE_ENTER();

HRESULT hr = S_OK;

CKsAudRenPin* pPin = FindViablePin(pwfx);

if (!pPin)

{DebugPrintf(TRACE_NORMAL, TEXT("Could not find a Render pin that supports the given wave format"));

hr = E_FAIL;}

else

{hr = pPin->SetFormat(pwfx);

if (FAILED(hr))

{DebugPrintf(TRACE_ERROR, TEXT("Failed to set Render Pin format - the pin lied about its supported formats"));}}

if (SUCCEEDED(hr))

{hr = pPin->Instantiate(fLooped);

if (SUCCEEDED(hr))

{DebugPrintf(TRACE_LOW, TEXT("Successfully instantiated Render Pin. Handle = 0x%08x"), pPin->GetHandle());}

else

{DebugPrintf(TRACE_ERROR, TEXT("Failed to instantiate Render Pin"));}}

if (FAILED(hr))

{// Initialize pPin to NULL again

pPin = NULL;

// Try to intstantiate all the pins, one at a time

CKsPin *pKsPin;

LISTPOS listPosPin = m_listRenderSinkPins.GetHeadPosition();

while( !pPin && m_listRenderSinkPins.GetNext( listPosPin, &pKsPin ))

{CKsAudRenPin *pKsAudRenPin = (CKsAudRenPin *)pKsPin;

hr = pKsAudRenPin->SetFormat( pwfx );

if (SUCCEEDED(hr))

{hr = pKsAudRenPin->Instantiate(fLooped);}

if (SUCCEEDED(hr))

{// Save the pin in pPin

pPin = pKsAudRenPin;

break;}}}

if (FAILED(hr))

{// Don't delete the pin - it's still in m_listRenderPins

//delete pPin;

pPin = NULL;}

else

{// Remove the pin from the filter's list of pins

LISTPOS listPosPinNode = m_listPins.Find( pPin );

assert(listPosPinNode);

m_listPins.RemoveAt( listPosPinNode );

listPosPinNode = m_listRenderSinkPins.Find( pPin );

assert(listPosPinNode);

m_listRenderSinkPins.RemoveAt( listPosPinNode );}

TRACE_LEAVE_HRESULT(hr);

return pPin;}

Заменить на:

CKsAudRenPin*

CKsAudRenFilter::CreateRenderPin

(BOOL fLooped)

{TRACE_ENTER();

HRESULT hr = S_OK;

CKsAudRenPin * pPin = FindViablePin();

if(!pPin)

{DebugPrintf(TRACE_NORMAL, TEXT("Could not find a Render pin that supports the given wave format"));

hr = E_FAIL;}

if(SUCCEEDED(hr))

{hr = pPin->Instantiate(fLooped);

if (SUCCEEDED(hr))

{DebugPrintf(TRACE_LOW, TEXT("Successfully instantiated Render Pin. Handle = 0x%08x"), pPin->GetHandle());}

else

{DebugPrintf(TRACE_ERROR, TEXT("Failed to instantiate Render Pin"));}}

/*if(FAILED(hr))

{// Initialize pPin to NULL again

pPin = NULL;

// Try to intstantiate all the pins, one at a time

CKsPin * pKsPin;

LISTPOS listPosPin = m_listRenderSinkPins.GetHeadPosition();

while(!pPin && m_listRenderSinkPins.GetNext(listPosPin, &pKsPin))

{CKsAudRenPin * pKsAudRenPin = (CKsAudRenPin *)pKsPin;

hr = pKsAudRenPin->Instantiate(fLooped);

if(SUCCEEDED(hr))

{// Save the pin in pPin

pPin = pKsAudRenPin;

break;}}}*/

if(FAILED(hr))

{// Don't delete the pin - it's still in m_listRenderPins

//delete pPin;

pPin = NULL;}

else

{// Remove the pin from the filter's list of pins

LISTPOS listPosPinNode = m_listPins.Find(pPin);

assert(listPosPinNode);

m_listPins.RemoveAt(listPosPinNode);

listPosPinNode = m_listRenderSinkPins.Find(pPin);

assert(listPosPinNode);

m_listRenderSinkPins.RemoveAt(listPosPinNode);}

TRACE_LEAVE_HRESULT(hr);

return pPin;}

Что заменить:

CKsAudRenPin*

CKsAudRenFilter::FindViablePin

(const WAVEFORMATEX* pwfx)

{TRACE_ENTER();

assert( pwfx );

CKsPin* pNode;

LISTPOS listPos = m_listRenderSinkPins.GetHeadPosition();

while(m_listRenderSinkPins.GetNext( listPos, &pNode ))

{CKsAudRenPin* pPin = (CKsAudRenPin*)pNode;

// To only look at non-digital output pins, check that pPin->IsVolumeSupported() is TRUE,

// as digital output pins don't have volume controls associated with them.

if( pPin->IsFormatSupported( pwfx ) )

{// This should be a valid pin

TRACE_LEAVE();

return pPin;}}

TRACE_LEAVE();

return NULL;}

Заменить на:

CKsAudRenPin*

CKsAudRenFilter::FindViablePin

(){TRACE_ENTER();

CKsPin * pNode;

LISTPOS listPos = m_listRenderSinkPins.GetHeadPosition();

while(m_listRenderSinkPins.GetNext( listPos, &pNode ))

{CKsAudRenPin * pPin = (CKsAudRenPin*)pNode;

// To only look at non-digital output pins, check that pPin->IsVolumeSupported() is TRUE,

// as digital output pins don't have volume controls associated with them.

if(pPin->IsFormatSupported())

{/ This should be a valid pin

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