Source code of Windows XP (NT5)
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/*
- INSCODEC.H
-
* Microsoft NetMeeting
* Network Audio Controller (NAC) DLL
* Internal header file for installable codecs
*
* Revision History:
*
* When Who What
* -------- ------------------ ---------------------------------------
* 1.29.97 Yoram Yaacovi Created
*
*/
#include <pshpack8.h> /* Assume 8 byte packing throughout */
/*
* Macros
*/
#define COMPARE_GUIDS(a,b) RtlEqualMemory((a), (b), sizeof(GUID))
#define ACQMUTEX(hMutex) \
while (WaitForSingleObject(hMutex, 10000) == WAIT_TIMEOUT) \
{ \
ERRORMSG(("Thread 0x%x waits on mutex\n", GetCurrentThreadId())); \
} \
#define RELMUTEX(hMutex) ReleaseMutex(hMutex)
#define IMPL(class, member, pointer) \
(&((class *)0)->member == pointer, ((class *) (((LONG_PTR) pointer) - offsetof (class, member))))
/*
* Data Structures
*/
/****************************************************************************
* @doc INTERNAL DATASTRUC AUDIO
*
* @class CInstallAudioCodecs | Installable Audio codecs
*
* @base public | IInstallAudioCodecs
*
***************************************************************************/
class CInstallAudioCodecs : public IInstallAudioCodecs
{
public:
// IUnknown methods
STDMETHODIMP QueryInterface (REFIID riid, void **ppv);
STDMETHODIMP_(ULONG) AddRef (void);
STDMETHODIMP_(ULONG) Release (void);
// IInstallAudioCodecs methods
STDMETHODIMP AddACMFormat (LPWAVEFORMATEX lpwfx, PBASIC_AUDCAP_INFO pAudCapInfo);
STDMETHODIMP RemoveACMFormat (LPWAVEFORMATEX lpwfx);
STDMETHODIMP ReorderFormats (PAUDCAP_INFO_LIST pAudCapInfoList);
STDMETHODIMP EnumFormats(PAUDCAP_INFO_LIST *ppAudCapInfoList);
STDMETHODIMP FreeBuffer(LPVOID lpBuffer);
private:
// Private functions
// Debug display functions
// Variables
};
/****************************************************************************
* @doc INTERNAL DATASTRUC VIDEO
*
* @class CInstallVideoCodecs | Installable Video codecs
*
* @base public | IInstallVideoCodecs
*
***************************************************************************/
class CInstallVideoCodecs : public IInstallVideoCodecs
{
public:
// IUnknown methods
STDMETHODIMP QueryInterface (REFIID riid, void **ppv);
STDMETHODIMP_(ULONG) AddRef (void);
STDMETHODIMP_(ULONG) Release (void);
// IInstallVideoCodecs methods
STDMETHODIMP AddVCMFormat (PVIDCAP_INFO pVidCapInfo);
STDMETHODIMP RemoveVCMFormat (PVIDCAP_INFO pVidCapInfo);
STDMETHODIMP ReorderFormats (PVIDCAP_INFO_LIST pVidCapInfoList);
STDMETHODIMP EnumFormats(PVIDCAP_INFO_LIST *ppVidCapInfoList);
STDMETHODIMP FreeBuffer(LPVOID lpBuffer);
private:
// Private functions
STDMETHODIMP AddRemoveVCMFormat(PVIDCAP_INFO pVidCapInfo,
BOOL bAdd);
// Debug display functions
// Variables
};
/****************************************************************************
* @doc INTERNAL DATASTRUC
*
* @class CInstallCodecs | Installable codecs
*
* @base public | IUnknown
*
***************************************************************************/
class CInstallCodecs : public IInstallCodecs
{
friend class CInstallAudioCodecs;
friend class CInstallVideoCodecs;
public:
// IUnknown methods
STDMETHODIMP QueryInterface (REFIID riid, void **ppv);
STDMETHODIMP_(ULONG) AddRef (void);
STDMETHODIMP_(ULONG) Release (void);
CInstallCodecs (void);
~CInstallCodecs (void);
HRESULT Initialize(REFIID riid);
private:
// Functions
STDMETHODIMP FreeBuffer(LPVOID lpBuffer);
STDMETHODIMP TranslateHr(HRESULT hr);
// Audio and video interfaces
CInstallAudioCodecs ifAudio;
CInstallVideoCodecs ifVideo;
// Variables
// @cmember Reference Count
int m_cRef;
// Two public members to allow access from the nested classes
// @cmember Pointer to an audio capability interface
LPAPPCAPPIF m_pAudAppCaps;
// @cmember Pointer to an video capability interface
LPAPPVIDCAPPIF m_pVidAppCaps;
};
/*
* Globals
*/
EXTERN_C HANDLE g_hMutex;
EXTERN_C class CInstallCodecs *g_pIC;
/*
* Function prototypes
*/
#include <poppack.h> /* End byte packing */