mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
96 lines
3.0 KiB
96 lines
3.0 KiB
/*
|
|
* DirectSound DirectMediaObject base classes
|
|
*
|
|
* Copyright (c) 1999 - 2000 Microsoft Corporation. All Rights Reserved.
|
|
*/
|
|
#ifndef _DsDmoBase_
|
|
#define _DsDmoBase_
|
|
|
|
#define DMO_NOATL
|
|
|
|
#include <objbase.h>
|
|
#include <dmobase.h>
|
|
#include <medparam.h>
|
|
#include <mmsystem.h>
|
|
#include <dsoundp.h>
|
|
|
|
#ifndef RELEASE
|
|
#define RELEASE(x) { if (x) (x)->Release(); x = NULL; }
|
|
#endif
|
|
|
|
// Macro to handle QueryInterface in the derived class for interfaces
|
|
// implemented by this base class.
|
|
//
|
|
#define IMP_DSDMO_QI(iid, ppv) \
|
|
{ \
|
|
*ppv = NULL; \
|
|
if (iid == IID_IPersistStream) *ppv = (void**)static_cast<IPersistStream*>(this); \
|
|
else if (iid == IID_IMediaObjectInPlace) *ppv = (void**)static_cast<IMediaObjectInPlace*>(this); \
|
|
else if (iid == IID_IDirectSoundDMOProxy) *ppv = (void**)static_cast<IDirectSoundDMOProxy*>(this); \
|
|
if (*ppv) \
|
|
{ \
|
|
AddRef(); \
|
|
return S_OK; \
|
|
} \
|
|
}
|
|
|
|
class CDirectSoundDMO :
|
|
public CPCMDMO,
|
|
public IPersistStream,
|
|
public IMediaObjectInPlace,
|
|
public IDirectSoundDMOProxy
|
|
{
|
|
public:
|
|
CDirectSoundDMO();
|
|
virtual ~CDirectSoundDMO();
|
|
|
|
/* IPersist */
|
|
STDMETHODIMP GetClassID (THIS_ CLSID *pClassID);
|
|
|
|
/* IPersistStream */
|
|
STDMETHODIMP IsDirty (THIS);
|
|
STDMETHODIMP Load (THIS_ IStream *pStm);
|
|
STDMETHODIMP Save (THIS_ IStream *pStm, BOOL fClearDirty);
|
|
STDMETHODIMP GetSizeMax (THIS_ ULARGE_INTEGER *pcbSize);
|
|
|
|
/* IMediaObjectInPlace */
|
|
STDMETHODIMP Process (THIS_ ULONG ulSize, BYTE *pData, REFERENCE_TIME rtStart, DWORD dwFlags);
|
|
STDMETHODIMP GetLatency (THIS_ REFERENCE_TIME *prt);
|
|
|
|
/* IDirectSoundDMOProxy */
|
|
STDMETHODIMP AcquireResources (THIS_ IKsPropertySet *pKsPropertySet);
|
|
STDMETHODIMP ReleaseResources (THIS);
|
|
STDMETHODIMP InitializeNode (THIS_ HANDLE hPin, ULONG ulNodeId);
|
|
|
|
protected:
|
|
// Information about each parameter. This is only needed by the
|
|
// author time object.
|
|
//
|
|
|
|
// Process in place
|
|
//
|
|
virtual HRESULT ProcessInPlace(ULONG ulQuanta, LPBYTE pcbData, REFERENCE_TIME rtStart, DWORD dwFlags) = 0;
|
|
|
|
// Send a parameter to the hardware. Called by the base class on SetParam if
|
|
// hardware is connected. This is virtual so a DMO can use the base class but
|
|
// override the way it talks to hardware.
|
|
//
|
|
virtual HRESULT ProxySetParam(DWORD dwParamIndex, MP_DATA value);
|
|
|
|
// Derived class can use this to determine if hardware is turned on.
|
|
//
|
|
inline bool IsInHardware()
|
|
{ return m_fInHardware; }
|
|
|
|
protected:
|
|
HANDLE m_hPin;
|
|
ULONG m_ulNodeId;
|
|
|
|
private:
|
|
MP_DATA *m_mpvCache;
|
|
IKsPropertySet *m_pKsPropertySet;
|
|
bool m_fInHardware;
|
|
|
|
};
|
|
|
|
#endif
|