00001 //=========================================================================== 00002 //Copyright (C) 2003, 2004 Zentaro Kavanagh 00003 // 00004 //Redistribution and use in source and binary forms, with or without 00005 //modification, are permitted provided that the following conditions 00006 //are met: 00007 // 00008 //- Redistributions of source code must retain the above copyright 00009 // notice, this list of conditions and the following disclaimer. 00010 // 00011 //- Redistributions in binary form must reproduce the above copyright 00012 // notice, this list of conditions and the following disclaimer in the 00013 // documentation and/or other materials provided with the distribution. 00014 // 00015 //- Neither the name of Zentaro Kavanagh nor the names of contributors 00016 // may be used to endorse or promote products derived from this software 00017 // without specific prior written permission. 00018 // 00019 //THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00020 //``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00021 //LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 00022 //PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE ORGANISATION OR 00023 //CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00024 //EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00025 //PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00026 //PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00027 //LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00028 //NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00029 //SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00030 //=========================================================================== 00031 00032 // 00033 // AbstracttransformFilter.cpp : Abstract Filter Class for transform filters. 00034 // 00035 00036 00037 #include "stdafx.h" 00038 #include "AbstractTransformFilter.h" 00039 00040 //Constructors 00041 AbstractTransformFilter::AbstractTransformFilter(TCHAR* inFilterName, REFCLSID inFilterGUID) 00042 : CBaseFilter(inFilterName, NULL, m_pLock, inFilterGUID) 00043 00044 , mInputPin(NULL) 00045 , mOutputPin(NULL) 00046 00047 { 00048 //Create the filter lock. 00049 m_pLock = new CCritSec; //Deleted in destructor... check what is happening in the base class. 00050 } 00051 00052 AbstractTransformFilter::~AbstractTransformFilter(void) 00053 { 00054 DestroyPins(); 00055 delete m_pLock; //Deleting filter lock 00056 } 00057 00058 void AbstractTransformFilter::DestroyPins() 00059 { 00060 delete mOutputPin; 00061 delete mInputPin; 00062 } 00063 00064 //If you want to handle an interface, do it here. 00065 STDMETHODIMP AbstractTransformFilter::NonDelegatingQueryInterface(REFIID riid, void **ppv) 00066 { 00067 00068 //May just get rid of this !! 00069 return CBaseFilter::NonDelegatingQueryInterface(riid, ppv); 00070 } 00071 00072 CBasePin* AbstractTransformFilter::GetPin(int inPinNo) 00073 { 00074 //Pin Constants 00075 const int INPUT_PIN = 0; 00076 const int OUTPUT_PIN = 1; 00077 00078 //Return the pin. 00079 switch (inPinNo) { 00080 case INPUT_PIN: 00081 return mInputPin; 00082 case OUTPUT_PIN: 00083 return mOutputPin; 00084 default: 00085 return NULL; 00086 }; 00087 } 00088 00089 int AbstractTransformFilter::GetPinCount(void) 00090 { 00091 const long NUM_PINS = 2; 00092 return NUM_PINS; 00093 } 00094