Source code of Windows XP (NT5)
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//
//
//
#ifndef _Garglep_
#define _Garglep_
#include "dsdmobse.h"
#include "dmocom.h"
#include "dsdmo.h"
#include "PropertyHelp.h"
#include "param.h"
class CDirectSoundGargleDMO :
public CDirectSoundDMO,
public CParamsManager,
public ISpecifyPropertyPages,
public IDirectSoundFXGargle,
public CParamsManager::UpdateCallback,
public CComBase
{
public:
CDirectSoundGargleDMO( IUnknown *pUnk, HRESULT *phr);
~CDirectSoundGargleDMO();
DECLARE_IUNKNOWN;
STDMETHODIMP NDQueryInterface(REFIID riid, void **ppv);
static CComBase* WINAPI CreateInstance(IUnknown *pUnk, HRESULT *phr);
// InitOnCreation is called by the class factory to give the object a chance to initialize
// immediately after it is created. This is used to prepare the object's parameter information.
HRESULT InitOnCreation();
// The Init function is an override from the CPCMDMO base class and it provides initialization
// for the effect's actual audio processing. Note that InputType must have been set before this
// occurs in order for this to work.
HRESULT Init();
STDMETHOD(Clone) (THIS_ IMediaObjectInPlace **);
// IPersist methods
virtual HRESULT STDMETHODCALLTYPE GetClassID( CLSID *pClassID );
// ISpecifyPropertyPages
STDMETHOD(GetPages)(CAUUID * pPages) { return PropertyHelp::GetPages(CLSID_DirectSoundPropGargle, pPages); }
// IPersistStream
STDMETHOD(IsDirty)(void) { return m_fDirty ? S_OK : S_FALSE; }
STDMETHOD(Load)(IStream *pStm) { return PropertyHelp::Load(this, DSFXGargle(), pStm); }
STDMETHOD(Save)(IStream *pStm, BOOL fClearDirty) { return PropertyHelp::Save(this, DSFXGargle(), pStm, fClearDirty); }
STDMETHOD(GetSizeMax)(ULARGE_INTEGER *pcbSize) { if (!pcbSize) return E_POINTER; pcbSize->QuadPart = sizeof(DSFXGargle); return S_OK; }
// IDirectSoundFXGargle
STDMETHOD(SetAllParameters) (THIS_ LPCDSFXGargle);
STDMETHOD(GetAllParameters) (THIS_ LPDSFXGargle);
// SetParam handling
STDMETHODIMP SetParam(DWORD dwParamIndex,MP_DATA value) { return SetParamInternal(dwParamIndex, value, false); }
HRESULT SetParamUpdate(DWORD dwParamIndex, MP_DATA value) { return SetParamInternal(dwParamIndex, value, true); }
HRESULT SetParamInternal(DWORD dwParamIndex, MP_DATA value, bool fSkipPasssingToParamManager);
// All of these methods are called by the base class
HRESULT FBRProcess(DWORD cQuanta, BYTE *pIn, BYTE *pOut);
HRESULT Discontinuity();
HRESULT ProcessInPlace(ULONG ulQuanta, LPBYTE pcbData, REFERENCE_TIME rtStart, DWORD dwFlags);
bool m_fDirty;
private:
// gargle params
ULONG m_ulShape;
ULONG m_ulGargleFreqHz;
// gargle state
ULONG m_ulPeriod;
ULONG m_ulPhase;
BOOL m_bInitialized;
};
EXT_STD_CREATE(Gargle);
#endif