AbstractTransformInputPin.h

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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 #pragma once
00033 
00034 //Local Includes
00035 #include "directshowabstractsdllstuff.h"
00036 #include "BasicSeekPassThrough.h"
00037 
00038 //STL Includes
00039 #include <vector>
00040 //Debug only !
00041 #include <fstream>
00042 //
00043 using namespace std;
00044 
00045 //Forward Declarations
00046 class AbstractTransformOutputPin;
00047 class AbstractTransformFilter;
00048 
00049 class AbstractTransformInputPin 
00050         //Base Classes
00051         :       public CBaseInputPin
00052                         //http://msdn.microsoft.com/library/default.asp?url=/library/en-us/directshow/htm/cbaseinputpinclass.asp
00053         ,       public BasicSeekPassThrough
00054 {
00055 public:
00056         //Friend Classes
00057         friend class AbstractTransformOutputPin;
00058 
00059         //COM Setup
00060         DECLARE_IUNKNOWN
00061         STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void **ppv);
00062                 
00063         //Constructors  
00064         AbstractTransformInputPin(AbstractTransformFilter* inParentFilter, CCritSec* inFilterLock, AbstractTransformOutputPin* inOutputPin, CHAR* inObjectName, LPCWSTR inPinDisplayName, vector<CMediaType*> inAcceptableMediaTypes);
00065         virtual ~AbstractTransformInputPin(void);
00066 
00067         //Pin Conenction Methods
00068         virtual HRESULT BreakConnect();
00069         virtual HRESULT CompleteConnect(IPin *inReceivePin);
00070 
00071         //Media Type control methods
00072         virtual HRESULT CheckMediaType(const CMediaType *inMediaType);
00073         virtual HRESULT GetMediaType(int inPosition, CMediaType *outMediaType);
00074         virtual HRESULT SetMediaType(const CMediaType* inMediaType) = 0;
00075 
00076         //TODO::: Should be virtual ??
00077         virtual STDMETHODIMP Receive(IMediaSample *pSample);
00078 
00079         //Stream Messaging methods
00080         virtual STDMETHODIMP EndOfStream(void);
00081         virtual STDMETHODIMP BeginFlush();
00082         virtual STDMETHODIMP EndFlush();
00083         virtual STDMETHODIMP NewSegment(REFERENCE_TIME inStartTime, REFERENCE_TIME inStopTime, double inRate);
00084 
00085 protected:
00086         //Constants and Enumerations
00087         static const short SIZE_16_BITS = 2;
00088         static const signed short SINT_MAX = 32767;
00089         static const signed short SINT_MIN = -32768;
00090 
00091         //Pure Virtuals for codec specific methods
00092         virtual HRESULT TransformData(unsigned char* inBuf, long inNumBytes) = 0;
00093         virtual bool ConstructCodec() = 0;
00094         virtual void DestroyCodec() = 0;
00095 
00096         virtual bool SetSampleParams(IMediaSample* outMediaSample, unsigned long inDataSize, REFERENCE_TIME* inStartTime, REFERENCE_TIME* inEndTime);
00097 
00098         HRESULT mHR;
00099 
00100         //TODO::: Couldn't this be gotten from the parent filter if we make them friends ??
00101         AbstractTransformOutputPin* mOutputPin;
00102         AbstractTransformFilter* mParentFilter;
00103         vector<CMediaType*> mAcceptableMediaTypes;
00104 
00105         //fstream debugLog;
00106         CCritSec* mStreamLock;
00107 };

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