123 lines
3.9 KiB
C
123 lines
3.9 KiB
C
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// Copyright (c) 1998-1999 Microsoft Corporation
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// TSigTrk.h : Declaration of the CTimeSigTrack
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#ifndef __TSIGTRK_H_
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#define __TSIGTRK_H_
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#include "dmusici.h"
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#include "dmusicf.h"
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#include "alist.h"
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class CRiffParser;
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class CTimeSigItem : public AListItem
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{
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public:
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CTimeSigItem();
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CTimeSigItem* GetNext(){ return (CTimeSigItem*)AListItem::GetNext(); };
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DMUS_IO_TIMESIGNATURE_ITEM m_TimeSig;
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};
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class CTimeSigList : public AList
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{
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public:
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CTimeSigItem* GetHead() {return (CTimeSigItem*)AList::GetHead();};
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CTimeSigItem* RemoveHead() {return (CTimeSigItem*)AList::RemoveHead();};
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CTimeSigItem* GetItem(LONG lIndex) { return (CTimeSigItem*) AList::GetItem(lIndex);};
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};
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class CTimeSigStateData
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{
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public:
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CTimeSigStateData()
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{
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m_mtPrevEnd = 0;
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m_bBeat = 4;
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m_bBeatsPerMeasure = 4;
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m_mtTimeSig = 0;
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m_fActive = TRUE;
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/* don't need these since they are always initialized
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m_pPerformance = NULL;
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m_pSegState = NULL;
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m_dwVirtualTrackID = 0;
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*/
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}
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CTimeSigItem * m_pCurrentTSig;
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IDirectMusicPerformance* m_pPerformance;
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IDirectMusicSegmentState* m_pSegState;
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DWORD m_dwVirtualTrackID;
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DWORD m_dwValidate; // used to validate state data
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MUSIC_TIME m_mtPrevEnd;
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MUSIC_TIME m_mtTimeSig; // previous time sig time
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BOOL m_fActive;
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BYTE m_bBeat; // previous beat
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BYTE m_bBeatsPerMeasure; // previous beats per measure
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};
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/////////////////////////////////////////////////////////////////////////////
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// CTimeSigTrack
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class CTimeSigTrack :
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public IPersistStream,
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public IDirectMusicTrack
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{
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public:
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CTimeSigTrack();
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CTimeSigTrack(CTimeSigTrack *pTrack, MUSIC_TIME mtStart, MUSIC_TIME mtEnd);
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~CTimeSigTrack();
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// member variables
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protected:
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CTimeSigList m_TSigEventList;
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long m_cRef;
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DWORD m_dwValidate; // used to validate state data.
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CRITICAL_SECTION m_CrSec;
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BOOL m_fCSInitialized;
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BOOL m_fNotificationMeasureBeat;
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BOOL m_fActive; // Track is active for generating time signatures
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BOOL m_fStateSetBySetParam; // If TRUE, active flag was set by GUID. Don't override.
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public:
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// IUnknown
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STDMETHODIMP QueryInterface(const IID &iid, void **ppv);
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STDMETHODIMP_(ULONG) AddRef();
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STDMETHODIMP_(ULONG) Release();
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// IDirectMusicTrack methods
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STDMETHODIMP IsParamSupported(REFGUID rguid);
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STDMETHODIMP Init(IDirectMusicSegment *pSegment);
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STDMETHODIMP InitPlay(IDirectMusicSegmentState *pSegmentState,
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IDirectMusicPerformance *pPerformance,
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void **ppStateData,
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DWORD dwTrackID,
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DWORD dwFlags);
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STDMETHODIMP EndPlay(void *pStateData);
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STDMETHODIMP Play(void *pStateData,MUSIC_TIME mtStart,
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MUSIC_TIME mtEnd,MUSIC_TIME mtOffset,
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DWORD dwFlags,IDirectMusicPerformance* pPerf,
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IDirectMusicSegmentState* pSegSt,DWORD dwVirtualID);
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STDMETHODIMP GetParam(REFGUID rguid,MUSIC_TIME mtTime,MUSIC_TIME* pmtNext,void *pData);
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STDMETHODIMP SetParam(REFGUID rguid,MUSIC_TIME mtTime,void *pData);
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STDMETHODIMP AddNotificationType(REFGUID rguidNotification);
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STDMETHODIMP RemoveNotificationType(REFGUID rguidNotification);
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STDMETHODIMP Clone(MUSIC_TIME mtStart,MUSIC_TIME mtEnd,IDirectMusicTrack** ppTrack);
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// IPersist functions
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STDMETHODIMP GetClassID( CLSID* pClsId );
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// IPersistStream functions
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STDMETHODIMP IsDirty();
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STDMETHODIMP Load( IStream* pIStream );
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STDMETHODIMP Save( IStream* pIStream, BOOL fClearDirty );
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STDMETHODIMP GetSizeMax( ULARGE_INTEGER FAR* pcbSize );
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protected:
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HRESULT STDMETHODCALLTYPE Seek( void *pStateData,MUSIC_TIME mtTime,BOOL fGetPrevious);
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void Construct(void);
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void Clear();
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HRESULT LoadTimeSigList( CRiffParser *pParser, long lChunkSize );
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protected:
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MUSIC_TIME NotificationMeasureBeat( MUSIC_TIME mtStart, MUSIC_TIME mtEnd,
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CTimeSigStateData* pSD, MUSIC_TIME mtOffset );
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};
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#endif //__TSIGTRK_H_
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