windows-server-2003/multimedia/directx/dmusic/dmtool/param.h

#ifndef __TOOLPARAM_H__
#define __TOOLPARAM_H__



#include "medparam.h"
#include "alist.h"

typedef struct _ParamInfo
{
    DWORD dwIndex;                      // Which parameter.
    MP_PARAMINFO    MParamInfo;         // Standard MediaParams structure.
    WCHAR *         pwchText;           // Array of text names for enumerated types.
} ParamInfo;

class CCurveItem : public AListItem
{
public:
    CCurveItem* GetNext() { return (CCurveItem*)AListItem::GetNext();}
    MP_ENVELOPE_SEGMENT m_Envelope;     // Envelope segment.
};

class CCurveList : public AList
{
public:
//    void Clear();
    void AddHead(CCurveItem* pCurveItem) { AList::AddHead((AListItem*)pCurveItem);}
//    void Insert(CCurveItem* pCurveItem);
    CCurveItem* GetHead(){return (CCurveItem*)AList::GetHead();}
//    CCurveItem* GetItem(LONG lIndex){return (CCurveItem*)AList::GetItem(lIndex);}
    CCurveItem* RemoveHead(){ return (CCurveItem*)AList::RemoveHead();}
//    void Remove(CCurveItem* pCurveItem){AList::Remove((AListItem*)pCurveItem);}
//    void AddTail(CCurveItem* pCurveItem){AList::AddTail((AListItem*)pCurveItem);}
//    CCurveItem* GetTail(){ return (CCurveItem*)AList::GetTail();}
};

#define MAX_REF_TIME    0x7FFFFFFFFFFFFFFF
#define MP_CAPS_ALL     MP_CAPS_CURVE_JUMP | MP_CAPS_CURVE_LINEAR | MP_CAPS_CURVE_SQUARE | MP_CAPS_CURVE_INVSQUARE | MP_CAPS_CURVE_SINE

class CParamsManager :	public IMediaParams, public IMediaParamInfo
{
public:
    CParamsManager();
    ~CParamsManager();

	// IUnknown
	STDMETHOD(QueryInterface)(REFIID, LPVOID FAR *) PURE;
	STDMETHOD_(ULONG, AddRef)() PURE;
	STDMETHOD_(ULONG, Release)() PURE;

	// IMediaParams
	STDMETHODIMP GetParam(DWORD dwParamIndex, MP_DATA *pValue);
	STDMETHODIMP SetParam( DWORD dwParamIndex,MP_DATA value);
	STDMETHODIMP AddEnvelope(DWORD dwParamIndex,DWORD cPoints,MP_ENVELOPE_SEGMENT *ppEnvelope);
	STDMETHODIMP FlushEnvelope( DWORD dwParamIndex,REFERENCE_TIME refTimeStart,REFERENCE_TIME refTimeEnd);
	STDMETHODIMP SetTimeFormat( GUID guidTimeFormat,MP_TIMEDATA mpTimeData);

    // IMediaParamInfo
    STDMETHODIMP GetParamCount(DWORD *pdwParams);
    STDMETHODIMP GetParamInfo(DWORD dwParamIndex,MP_PARAMINFO *pInfo);
    STDMETHODIMP GetParamText(DWORD dwParamIndex,WCHAR **ppwchText);
    STDMETHODIMP GetNumTimeFormats(DWORD *pdwNumTimeFormats);
    STDMETHODIMP GetSupportedTimeFormat(DWORD dwFormatIndex,GUID *pguidTimeFormat);        
    STDMETHODIMP GetCurrentTimeFormat( GUID *pguidTimeFormat,MP_TIMEDATA *pTimeData);

protected:
    HRESULT InitParams( DWORD cParams, ParamInfo *pParamInfos);
	HRESULT GetParamFloat (DWORD dwParamIndex,REFERENCE_TIME rt,float *pval);
    HRESULT GetParamInt (DWORD dwParamIndex,REFERENCE_TIME rt,long *pval);
    HRESULT CopyParamsFromSource(CParamsManager * pSource);

	// data

	CRITICAL_SECTION m_ParamsCriticalSection;
    BOOL            m_fDirty;       // Has data changed since last file load or save?
	BOOL			m_fMusicTime;	// True if time format is music time, else false for clock time.
	DWORD           m_cParams;		// Nuimber of parameters.
	ParamInfo       *m_pParamInfos; // Array of ParamInfo structures, one for each parameter.
	CCurveList      *m_pCurveLists; // Array of Curve lists, one for each parameter.
};

#endif // __TOOLPARAM_H__