758 lines
21 KiB
C++
758 lines
21 KiB
C++
/*++
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Copyright (c) 1998-1999 Microsoft Corporation
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Module Name:
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mspterm.cpp
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Abstract:
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Implementations for the CBaseTerminal, CSingleFilterTerminal, and various
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work item / worker thread classes.
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--*/
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#include "precomp.h"
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#pragma hdrstop
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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CBaseTerminal::CBaseTerminal()
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: m_TerminalDirection(TD_CAPTURE)
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, m_TerminalType(TT_STATIC)
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, m_TerminalState(TS_NOTINUSE)
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, m_TerminalClassID(CLSID_NULL)
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, m_pFTM(NULL)
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{
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LOG((MSP_TRACE, "CBaseTerminal::CBaseTerminal() called"));
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HRESULT hr = CoCreateFreeThreadedMarshaler(
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GetControllingUnknown(), &m_pFTM);
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if ( FAILED(hr) )
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{
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LOG((MSP_TRACE, "CBaseTerminal::CBaseTerminal() - create ftm failed"));
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}
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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CBaseTerminal::~CBaseTerminal()
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{
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if (NULL != m_pFTM)
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{
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m_pFTM->Release();
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}
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LOG((MSP_TRACE, "CBaseTerminal::~CBaseTerminal() finished"));
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//
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// Dynamic terminals that support only one direction must override this to check
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// if the direction is valid (although the terminal manager is supposed to
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// ensure that the wrong direction is never passed). Dynamic terminal might want
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// to override this for other reasons too (create filters now, etc.).
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//
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// Static terminals normally just call this in their CreateTerminal().
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//
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HRESULT CBaseTerminal::Initialize(
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IN IID iidTerminalClass,
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IN DWORD dwMediaType,
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IN TERMINAL_DIRECTION Direction,
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IN MSP_HANDLE htAddress
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)
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{
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CLock lock(m_CritSec);
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LOG((MSP_TRACE, "CBaseTerminal::Initialize - enter"));
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//
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// Check if the media type is supported by this terminal.
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//
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if ( ! MediaTypeSupported( (long) dwMediaType) )
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{
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LOG((MSP_ERROR, "CBaseTerminal::Initialize - "
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"media type not supported - returning E_INVALIDARG"));
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return E_INVALIDARG;
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}
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//
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// Save this configurarion.
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//
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m_dwMediaType = dwMediaType;
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m_TerminalDirection = Direction;
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m_TerminalClassID = iidTerminalClass;
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m_htAddress = htAddress;
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LOG((MSP_TRACE, "CBaseTerminal::Initialize - exit S_OK"));
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return S_OK;
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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STDMETHODIMP CBaseTerminal::get_AddressHandle (
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OUT MSP_HANDLE * phtAddress
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)
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{
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CLock lock(m_CritSec);
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LOG((MSP_TRACE, "CBaseTerminal::get_AddressHandle - enter"));
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if ( MSPB_IsBadWritePtr( phtAddress, sizeof(MSP_HANDLE) ) )
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{
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LOG((MSP_ERROR, "CBaseTerminal::get_AddressHandle - returning E_POINTER"));
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return E_POINTER;
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}
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*phtAddress = m_htAddress;
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LOG((MSP_TRACE, "CBaseTerminal::get_AddressHandle - exit S_OK"));
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return S_OK;
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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STDMETHODIMP CBaseTerminal::get_Name(BSTR * pbsName)
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{
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CLock lock(m_CritSec);
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LOG((MSP_TRACE, "CBaseTerminal::get_Name - enter"));
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if ( MSPB_IsBadWritePtr( pbsName, sizeof(BSTR) ) )
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{
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LOG((MSP_ERROR, "CBaseTerminal::get_Name - "
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"bad BSTR passed in - returning E_POINTER"));
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return E_POINTER;
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}
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*pbsName = SysAllocString(m_szName);
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if ( *pbsName == NULL )
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{
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LOG((MSP_ERROR, "CBaseTerminal::get_Name - "
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"can't sysallocstring - returning E_OUTOFMEMORY"));
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return E_OUTOFMEMORY;
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}
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LOG((MSP_TRACE, "CBaseTerminal::get_Name - exit S_OK"));
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return S_OK;
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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STDMETHODIMP CBaseTerminal::get_State(TERMINAL_STATE * pVal)
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{
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CLock lock(m_CritSec);
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LOG((MSP_TRACE, "CBaseTerminal::get_State - enter"));
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if ( MSPB_IsBadWritePtr( pVal, sizeof(TERMINAL_STATE) ) )
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{
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LOG((MSP_ERROR, "CBaseTerminal::get_State - returning E_POINTER"));
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return E_POINTER;
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}
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*pVal = m_TerminalState;
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LOG((MSP_TRACE, "CBaseTerminal::get_State - exit S_OK"));
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return S_OK;
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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STDMETHODIMP CBaseTerminal::get_TerminalType(TERMINAL_TYPE * pVal)
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{
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CLock lock(m_CritSec);
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LOG((MSP_TRACE, "CBaseTerminal::get_TerminalType - enter"));
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if ( MSPB_IsBadWritePtr( pVal, sizeof(TERMINAL_TYPE) ) )
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{
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LOG((MSP_ERROR, "CBaseTerminal::get_TerminalType - returning E_POINTER"));
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return E_POINTER;
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}
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*pVal = m_TerminalType;
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LOG((MSP_TRACE, "CBaseTerminal::get_TerminalType - exit S_OK"));
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return S_OK;
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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STDMETHODIMP CBaseTerminal::get_TerminalClass(BSTR * pbsClassID)
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{
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CLock lock(m_CritSec);
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LOG((MSP_TRACE, "CBaseTerminal::get_TerminalClass - enter"));
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if ( MSPB_IsBadWritePtr( pbsClassID, sizeof(BSTR) ) )
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{
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LOG((MSP_ERROR, "CBaseTerminal::get_TerminalClass - returning E_POINTER"));
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return E_POINTER;
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}
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//
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// Convert the CLSID to an OLE string.
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//
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LPOLESTR lposClass = NULL;
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HRESULT hr = StringFromCLSID(m_TerminalClassID, &lposClass);
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if (FAILED(hr))
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{
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LOG((MSP_ERROR, "CBaseTerminal::get_TerminalClass (StringFromCLSID) - returning %8x", hr));
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return hr;
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}
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//
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// Put the string in a BSTR.
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//
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*pbsClassID = ::SysAllocString(lposClass);
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//
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// Free the OLE string.
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//
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::CoTaskMemFree(lposClass);
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if (*pbsClassID == NULL)
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{
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LOG((MSP_ERROR, "CBaseTerminal::get_TerminalClass - returning E_OUTOFMEMORY"));
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return E_OUTOFMEMORY;
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}
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LOG((MSP_TRACE, "CBaseTerminal::get_TerminalClass - exit S_OK"));
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return S_OK;
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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STDMETHODIMP CBaseTerminal::get_Direction(
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OUT TERMINAL_DIRECTION *pDirection
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)
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{
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CLock lock(m_CritSec);
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LOG((MSP_TRACE, "CBaseTerminal::get_Direction - enter"));
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if ( MSPB_IsBadWritePtr( pDirection, sizeof(TERMINAL_DIRECTION) ) )
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{
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LOG((MSP_ERROR, "CBaseTerminal::get_Direction - returning E_POINTER"));
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return E_POINTER;
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}
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*pDirection = m_TerminalDirection;
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LOG((MSP_TRACE, "CBaseTerminal::get_Direction - exit S_OK"));
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return S_OK;
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// enters each of the internal filters into the filter graph
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// connects the internal filters together (if applicable)
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// and returns all the filters to be used as connection points
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STDMETHODIMP CBaseTerminal::ConnectTerminal(
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IN IGraphBuilder * pGraph,
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IN DWORD dwTerminalDirection,
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IN OUT DWORD * pdwNumPins,
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OUT IPin ** ppPins
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)
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{
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LOG((MSP_TRACE, "CBaseTerminal::ConnectTerminal - enter"));
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//
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// Check parameters.
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//
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if ( IsBadReadPtr(pGraph, sizeof(IGraphBuilder) ) )
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{
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LOG((MSP_ERROR, "CBaseTerminal::ConnectTerminal - "
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"bad graph pointer; exit E_POINTER"));
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return E_POINTER;
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}
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if ( MSPB_IsBadWritePtr(pdwNumPins, sizeof(DWORD) ) )
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{
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LOG((MSP_ERROR, "CBaseTerminal::ConnectTerminal - "
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"bad numpins pointer; exit E_POINTER"));
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return E_POINTER;
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}
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//
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// Find out how many pins we expose. For most terminals this is
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// straightforward but we pass in the graph pointer in case they
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// need to do something funky to figure this out.
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//
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DWORD dwActualNumPins;
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HRESULT hr;
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hr = GetNumExposedPins(pGraph, &dwActualNumPins);
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if ( FAILED(hr) )
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{
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LOG((MSP_ERROR, "CBaseTerminal::ConnectTerminal - "
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"GetNumExposedPins failed - exit 0x%08x", hr));
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return hr;
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}
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//
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// If ppPins is NULL, just return the number of pins and don't try to
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// connect the terminal.
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//
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if ( ppPins == NULL )
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{
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LOG((MSP_TRACE, "CBaseTerminal::ConnectTerminal - "
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"returned number of exposed pins - exit S_OK"));
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*pdwNumPins = dwActualNumPins;
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return S_OK;
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}
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//
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// Otherwise, we have a pin return buffer. Check that the purported buffer
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// size is big enough and that the buffer is actually writable to the size
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// we need.
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//
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if ( *pdwNumPins < dwActualNumPins )
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{
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LOG((MSP_ERROR, "CBaseTerminal::ConnectTerminal - "
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"not enough space to place pins; exit TAPI_E_NOTENOUGHMEMORY"));
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*pdwNumPins = dwActualNumPins;
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return TAPI_E_NOTENOUGHMEMORY;
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}
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if ( MSPB_IsBadWritePtr(ppPins, dwActualNumPins * sizeof(IPin *) ) )
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{
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LOG((MSP_ERROR, "CBaseTerminal::ConnectTerminal - "
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"bad pins array pointer; exit E_POINTER"));
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return E_POINTER;
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}
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//
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// Check if we're already connected, and if so, change our state to
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// connected. Note that this makes sense for both core static terminals
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// and dynamic terminals. Also note that we need to protect this with
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// a critical section, but after this we can let go of the lock because
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// anyone who subsequently enters the critical section will bail at this
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// point.
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//
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{
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CLock lock(m_CritSec);
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//
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// check if already connected
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//
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if (TS_INUSE == m_TerminalState)
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{
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LOG((MSP_ERROR, "CBaseTerminal::ConnectTerminal - "
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"terminal already in use; exit TAPI_E_TERMINALINUSE"));
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return TAPI_E_TERMINALINUSE;
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}
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//
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// Save important state.
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//
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m_pGraph = pGraph;
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m_TerminalState = TS_INUSE;
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}
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// add filters to the filter graph
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hr = AddFiltersToGraph();
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if ( FAILED(hr) )
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{
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LOG((MSP_ERROR, "CBaseTerminal::ConnectTerminal - "
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"can't add filters to graph"));
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goto disconnect_terminal;
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}
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// Give the terminal a chance to do any preconnection
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hr = ConnectFilters();
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if ( FAILED(hr) )
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{
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LOG((MSP_ERROR, "CBaseTerminal::ConnectTerminal - "
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"can't do internal filter connection"));
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goto disconnect_terminal;
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}
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//
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// Get the pins that this filter exposes. No need to pass in
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// the filter graph because we already saved the graph pointer.
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//
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*pdwNumPins = dwActualNumPins;
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hr = GetExposedPins(ppPins);
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if ( FAILED(hr) )
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{
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LOG((MSP_ERROR, "CBaseTerminal::ConnectTerminal - "
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"can't get exposed pins"));
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goto disconnect_terminal;
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}
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LOG((MSP_TRACE, "CBaseTerminal::ConnectTerminal success"));
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return S_OK;
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disconnect_terminal:
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//
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// best effort attempt to disconnect - ignore error code
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//
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DisconnectTerminal(pGraph, 0);
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//
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// Release our reference to the graph and set ourselves to notinuse state.
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// DisconnectTerminal does this on success, but we need to make sure this
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// cleanup happens even if DisconnectTerminal failed.
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//
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m_pGraph = NULL; // this releases the CComPtr
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m_TerminalState = TS_NOTINUSE;
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LOG((MSP_TRACE, "CBaseTerminal::ConnectTerminal - exit 0x%08x", hr));
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return hr;
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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STDMETHODIMP
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CBaseTerminal::CompleteConnectTerminal(void)
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{
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LOG((MSP_TRACE, "CBaseTerminal::CompleteConnectTerminal - enter"));
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LOG((MSP_TRACE, "CBaseTerminal::CompleteConnectTerminal - exit S_OK"));
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return S_OK;
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// disconnects the internal filters from each other (if applicable)
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// and removes them from the filter graph (thus breaking connections to
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// the stream).
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// Filter graph parameter is used for validation, to make sure the terminal
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// is disconnected from the same graph that it was originally connected to.
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STDMETHODIMP
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CBaseTerminal::DisconnectTerminal(
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IN IGraphBuilder * pGraph,
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IN DWORD dwReserved
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)
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{
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CLock lock(m_CritSec);
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LOG((MSP_TRACE, "CBaseTerminal::DisconnectTerminal called"));
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//
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// If not in use, then there is nothing to be done.
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//
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if ( TS_INUSE != m_TerminalState )
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{
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_ASSERTE(m_pGraph == NULL);
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LOG((MSP_TRACE, "CBaseTerminal::DisconnectTerminal success; not in use"));
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return S_OK;
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}
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//
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// Check that we are being disconnected from the correct graph.
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//
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if ( m_pGraph != pGraph )
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{
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LOG((MSP_TRACE, "CBaseTerminal::DisconnectTerminal - "
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"wrong graph; returning E_INVALIDARG"));
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return E_INVALIDARG;
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}
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//
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// Extra sanity check.
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//
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if ( m_pGraph == NULL )
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{
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LOG((MSP_TRACE, "CBaseTerminal::DisconnectTerminal - "
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"no graph; returning E_UNEXPECTED"));
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return E_UNEXPECTED;
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}
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HRESULT hr;
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//
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// Remove filters from the graph
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//
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hr = RemoveFiltersFromGraph();
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if ( FAILED(hr) )
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{
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LOG((MSP_ERROR, "CBaseTerminal::DisconnectTerminal - "
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"remove filters from graph failed; returning 0x%08x", hr));
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return hr;
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}
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//
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// Release our reference to the graph and set ourselves to notinuse state.
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//
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m_pGraph = NULL; // this releases the CComPtr
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m_TerminalState = TS_NOTINUSE;
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LOG((MSP_TRACE, "CBaseTerminal::DisconnectTerminal success"));
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return S_OK;
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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STDMETHODIMP CBaseTerminal::get_MediaType(long * plMediaType)
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{
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CLock lock(m_CritSec);
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LOG((MSP_TRACE, "CBaseTerminal::get_MediaType - enter"));
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if ( MSPB_IsBadWritePtr(plMediaType, sizeof(long) ) )
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{
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LOG((MSP_ERROR, "CBaseTerminal::get_MediaType - returning E_POINTER"));
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return E_POINTER;
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}
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*plMediaType = (long) m_dwMediaType;
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LOG((MSP_TRACE, "CBaseTerminal::get_MediaType - exit S_OK"));
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return S_OK;
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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BOOL CBaseTerminal::MediaTypeSupported(long lMediaType)
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{
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return IsValidSingleMediaType( (DWORD) lMediaType,
|
|
GetSupportedMediaTypes() );
|
|
}
|
|
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// //
|
|
// CSingleFilterTerminal //
|
|
// //
|
|
// This is a base class for a terminal with a single filter and pin. The //
|
|
// terminal could be any direction or media type, and it could be static //
|
|
// or dynamic. //
|
|
// //
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
HRESULT CSingleFilterTerminal::GetNumExposedPins(
|
|
IN IGraphBuilder * pGraph,
|
|
OUT DWORD * pdwNumPins)
|
|
{
|
|
LOG((MSP_TRACE, "CSingleFilterTerminal::GetNumExposedPins - enter"));
|
|
|
|
//
|
|
// We ignote pGraph because we don't need to do anything special to find
|
|
// out how many pins we have.
|
|
//
|
|
|
|
*pdwNumPins = 1;
|
|
|
|
LOG((MSP_TRACE, "CSingleFilterTerminal::GetNumExposedPins - exit S_OK"));
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
|
|
HRESULT CSingleFilterTerminal::GetExposedPins(
|
|
OUT IPin ** ppPins
|
|
)
|
|
{
|
|
LOG((MSP_TRACE, "CSingleFilterTerminal::GetExposedPins - enter"));
|
|
|
|
_ASSERTE( ! MSPB_IsBadWritePtr(ppPins, 1 * sizeof(IPin *) ) );
|
|
|
|
//
|
|
// Return our single pin.
|
|
//
|
|
|
|
*ppPins = m_pIPin;
|
|
(*ppPins)->AddRef();
|
|
|
|
LOG((MSP_TRACE, "CSingleFilterTerminal::GetExposedPins - exit S_OK"));
|
|
return S_OK;
|
|
}
|
|
|
|
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
|
|
// stops the rightmost render filter in the terminal
|
|
// (needed for dynamic filter graphs)
|
|
STDMETHODIMP CSingleFilterTerminal::RunRenderFilter(void)
|
|
{
|
|
// check that we're really a render filter
|
|
|
|
// tell our single filter to run
|
|
|
|
return E_NOTIMPL;
|
|
}
|
|
|
|
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
|
|
// stops the rightmost render filter in the terminal
|
|
// (needed for dynamic filter graphs)
|
|
STDMETHODIMP CSingleFilterTerminal::StopRenderFilter(void)
|
|
{
|
|
// check that we're really a render filter
|
|
|
|
// tell our single filter to stop
|
|
|
|
return E_NOTIMPL;
|
|
}
|
|
|
|
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
|
|
HRESULT
|
|
CSingleFilterTerminal::RemoveFiltersFromGraph(void)
|
|
{
|
|
LOG((MSP_TRACE, "CSingleFilterTerminal::RemoveFiltersFromGraph - enter"));
|
|
|
|
if (m_pGraph == NULL)
|
|
{
|
|
LOG((MSP_ERROR, "CSingleFilterTerminal::RemoveFiltersFromGraph - "
|
|
"no graph; returning E_UNEXPECTED"));
|
|
return E_UNEXPECTED;
|
|
}
|
|
|
|
if (m_pIFilter == NULL)
|
|
{
|
|
LOG((MSP_ERROR, "CSingleFilterTerminal::RemoveFiltersFromGraph - "
|
|
"no filter; returning E_UNEXPECTED"));
|
|
return E_UNEXPECTED;
|
|
}
|
|
|
|
//
|
|
// Remove the filter from the graph. This also disconnects any connections
|
|
// the filter may have.
|
|
//
|
|
|
|
HRESULT hr = m_pGraph->RemoveFilter(m_pIFilter);
|
|
|
|
LOG((MSP_TRACE, "CSingleFilterTerminal::RemoveFiltersFromGraph - exit 0x%08x", hr));
|
|
return hr;
|
|
}
|
|
|
|
HRESULT
|
|
CSingleFilterStaticTerminal::CompareMoniker(
|
|
IMoniker *pMoniker
|
|
)
|
|
{
|
|
IMoniker *pReducedMoniker;
|
|
IMoniker *pReducedNewMoniker;
|
|
IBindCtx *pbc;
|
|
HRESULT hr;
|
|
|
|
hr = CreateBindCtx( 0, &pbc );
|
|
|
|
if (FAILED(hr))
|
|
{
|
|
LOG((MSP_ERROR, "CSingleFilterStaticTerminal::CompareMoniker - "
|
|
"unable to create bind context"));
|
|
return hr;
|
|
}
|
|
|
|
hr = m_pMoniker->Reduce(pbc ,MKRREDUCE_ALL, NULL, &pReducedMoniker);
|
|
|
|
if (FAILED(hr) || !pReducedMoniker)
|
|
{
|
|
LOG((MSP_ERROR, "CSingleFilterStaticTerminal::CompareMoniker - "
|
|
"unable to reduce moniker"));
|
|
pbc->Release(); // release the bind context
|
|
return hr;
|
|
}
|
|
|
|
hr = pMoniker->Reduce(pbc ,MKRREDUCE_ALL, NULL, &pReducedNewMoniker);
|
|
|
|
if (FAILED(hr) || !pReducedNewMoniker)
|
|
{
|
|
LOG((MSP_ERROR, "CSingleFilterStaticTerminal::CompareMoniker - "
|
|
"unable to reduce moniker"));
|
|
pbc->Release(); // release the bind context
|
|
pReducedMoniker->Release(); // release the reduced moniker
|
|
return hr;
|
|
}
|
|
|
|
pbc->Release(); // release the bind context
|
|
|
|
if (pReducedMoniker->IsEqual(pReducedNewMoniker) == S_OK)
|
|
{
|
|
LOG((MSP_TRACE, "CSingleFilterStaticTerminal::CompareMoniker - "
|
|
"exit - return S_OK"));
|
|
|
|
pReducedMoniker->Release(); // release the reduced monikers
|
|
pReducedNewMoniker->Release();
|
|
return S_OK;
|
|
}
|
|
|
|
pReducedMoniker->Release(); // release the reduced monikers
|
|
pReducedNewMoniker->Release();
|
|
|
|
LOG((MSP_TRACE, "CSingleFilterStaticTerminal::CompareMoniker - "
|
|
"exit - return S_FALSE"));
|
|
return S_FALSE;
|
|
}
|
|
|
|
// eof
|