BasicSeekPassThrough.h

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00001 //===========================================================================
00002 //Copyright (C) 2003, 2004 Zentaro Kavanagh
00003 //
00004 //Copyright (C) 2003, 2004 Commonwealth Scientific and Industrial Research
00005 //Organisation (CSIRO) Australia
00006 //
00007 //Redistribution and use in source and binary forms, with or without
00008 //modification, are permitted provided that the following conditions
00009 //are met:
00010 //
00011 //- Redistributions of source code must retain the above copyright
00012 //notice, this list of conditions and the following disclaimer.
00013 //
00014 //- Redistributions in binary form must reproduce the above copyright
00015 //notice, this list of conditions and the following disclaimer in the
00016 //documentation and/or other materials provided with the distribution.
00017 //
00018 //- Neither the name of CSIRO Australia nor the names of its
00019 //contributors may be used to endorse or promote products derived from
00020 //this software without specific prior written permission.
00021 //
00022 //THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
00023 //``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00024 //LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
00025 //PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE ORGANISATION OR
00026 //CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00027 //EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00028 //PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00029 //PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00030 //LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00031 //NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00032 //SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00033 //===========================================================================
00034 #pragma once
00035 
00036 //STL Includes
00037 #include <fstream>
00038 using namespace std;
00039 
00040 class BasicSeekPassThrough
00041         //Base classes.
00042         :       public IMediaSeeking
00043 {
00044 public:
00045         //Constructors
00046         BasicSeekPassThrough(void);
00047         BasicSeekPassThrough(IMediaSeeking* inDelegate);
00048         virtual ~BasicSeekPassThrough(void);
00049 
00050         //Delegate Control Methods.
00051         bool SetDelegate(IMediaSeeking* inDelegate);
00052         bool ReleaseDelegate();
00053         
00054         //IMediaSeeking Interface
00055         virtual STDMETHODIMP GetCapabilities(DWORD *pCapabilities);
00056         virtual STDMETHODIMP CheckCapabilities(DWORD *pCapabilities);
00057         virtual STDMETHODIMP IsFormatSupported(const GUID *pFormat);
00058         virtual STDMETHODIMP QueryPreferredFormat(GUID *pFormat);
00059         virtual STDMETHODIMP SetTimeFormat(const GUID *pFormat);
00060         virtual STDMETHODIMP GetTimeFormat( GUID *pFormat);
00061         virtual STDMETHODIMP GetDuration(LONGLONG *pDuration);
00062         virtual STDMETHODIMP GetStopPosition(LONGLONG *pStop);
00063         virtual STDMETHODIMP GetCurrentPosition(LONGLONG *pCurrent);
00064         virtual STDMETHODIMP ConvertTimeFormat(LONGLONG *pTarget, const GUID *pTargetFormat, LONGLONG Source, const GUID *pSourceFormat);
00065         virtual STDMETHODIMP SetPositions(LONGLONG *pCurrent,DWORD dwCurrentFlags,LONGLONG *pStop,DWORD dwStopFlags);
00066         virtual STDMETHODIMP GetPositions(LONGLONG *pCurrent, LONGLONG *pStop);
00067         virtual STDMETHODIMP GetAvailable(LONGLONG *pEarliest, LONGLONG *pLatest);
00068         virtual STDMETHODIMP SetRate(double dRate);
00069         virtual STDMETHODIMP GetRate(double *dRate);
00070         virtual STDMETHODIMP GetPreroll(LONGLONG *pllPreroll);
00071         virtual STDMETHODIMP IsUsingTimeFormat(const GUID *pFormat);
00072 
00073 protected:
00074         //Member data
00075         IMediaSeeking* mSeekDelegate;
00076         HRESULT mHR;
00077         DWORD mSeekingCap;
00078 
00079         //Debug only.
00080         //fstream seekDebug;
00081 };

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