AbstractAudioDecodeFilter.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 
00033 #pragma once
00034 
00035 //Local Includes
00036 #include "abstractaudiodllstuff.h"
00037 #include "BasicSeekable.h"
00038 
00039 //Forward Declarations
00040 class AbstractAudioDecodeInputPin;
00041 class AbstractAudioDecodeOutputPin;
00042 
00043 
00044 class ABS_AUDIO_DEC_API AbstractAudioDecodeFilter
00045         //Parent Classes
00046         :       public CBaseFilter      
00047                         //http://msdn.microsoft.com/library/default.asp?url=/library/en-us/directshow/htm/cbasefilterclass.asp
00048 {
00049 public:
00050         //Friend Classes
00051         friend class AbstractAudioDecodeInputPin;
00052         friend class AbstractAudioDecodeOutputPin;
00053 
00054         //COM Setup
00055         DECLARE_IUNKNOWN
00056         STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void **ppv);
00057         
00058         //Constants and Enumerations
00059         static const long NUM_PINS = 2;
00060         enum eAudioFormat {
00061                 NONE = 0,
00062                 VORBIS = 1,
00063                 SPEEX = 2,
00064                 FLAC = 3,
00065                 OTHER = 1000
00066         };
00067 
00068         //Constructors
00069         AbstractAudioDecodeFilter(TCHAR* inFilterName, REFCLSID inFilterGUID, unsigned short inAudioFormat );
00070         virtual ~AbstractAudioDecodeFilter(void);
00071         
00072         //Pin Methods
00073         CBasePin* GetPin(int n);
00074         int GetPinCount(void);
00075 
00076         virtual bool ConstructPins() = 0;
00077         virtual void DestroyPins();
00078 
00079 
00080         //Media Control Methods
00081         virtual STDMETHODIMP Stop();
00082         
00083         
00084 
00085         unsigned short mAudioFormat;                    //TODO::: Make this private at some point
00086 
00087         //static CUnknown* WINAPI CreateInstance(LPUNKNOWN pUnk, HRESULT *pHr);
00088 protected:
00089         //Member Data
00090         AbstractAudioDecodeInputPin* mInputPin;
00091         AbstractAudioDecodeOutputPin* mOutputPin;
00092 };
00093 
00094 

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