CWinMediaBuffer Class Reference

#include <WinMediaBuffer.h>

List of all members.

Public Member Functions
	CWinMediaBuffer (DWORD len=0)
virtual	~CWinMediaBuffer (void)
void	init (DWORD len)
void	free (void)
void	clear (void)
Buffer *	getBuffer (void)
	STDMETHODIMP_ (ULONG) AddRef()
	STDMETHODIMP_ (ULONG) Release()
STDMETHODIMP	QueryInterface (REFIID riid, void **ppv)
STDMETHODIMP	SetLength (DWORD length)
STDMETHODIMP	GetMaxLength (DWORD *pMaxLength)
STDMETHODIMP	GetBufferAndLength (BYTE **ppData, DWORD *pLength)
Protected Attributes
Buffer *	m_pBuffer

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Detailed Description

Definition at line 28 of file WinMediaBuffer.h.

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Constructor & Destructor Documentation

CWinMediaBuffer

(

DWORD

len = 0

)

Definition at line 15 of file WinMediaBuffer.cpp.

References CWinMediaBuffer::init(), and CWinMediaBuffer::m_pBuffer.

{
    m_pBuffer = NULL;
    init(len);
}

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virtual ~CWinMediaBuffer

(

void

)

[inline, virtual]

Definition at line 32 of file WinMediaBuffer.h.

References CWinMediaBuffer::free().

{ free();}

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Member Function Documentation

void clear

(

void

)

[inline]

Definition at line 36 of file WinMediaBuffer.h.

References CWinMediaBuffer::m_pBuffer.

Referenced by CWinAudioStream::CaptureThread().

{ m_pBuffer->vldsz = 0;}

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void free

(

void

)

Definition at line 33 of file WinMediaBuffer.cpp.

References CWinMediaBuffer::m_pBuffer.

Referenced by CWinMediaBuffer::init(), and CWinMediaBuffer::~CWinMediaBuffer().

{
    if (m_pBuffer!=NULL) {
        del_Buffer(&m_pBuffer);
    }
    m_pBuffer = NULL;
}

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Buffer* getBuffer

(

void

)

[inline]

Definition at line 38 of file WinMediaBuffer.h.

References CWinMediaBuffer::m_pBuffer.

{ return m_pBuffer;}

STDMETHODIMP GetBufferAndLength	(	BYTE **	ppData,
		DWORD *	pLength
	)			[inline]

Definition at line 69 of file WinMediaBuffer.h.

References CWinMediaBuffer::m_pBuffer.

Referenced by CWinAudioStream::CaptureThread(), CWinAudioStream::QueueCapturedData(), and CWinAudioStream::ReadOneBuffer().

    {
        if (ppData!=NULL)  *ppData  = (BYTE*)m_pBuffer->buf;
        if (pLength!=NULL) *pLength = (DWORD)m_pBuffer->vldsz;
        return NOERROR;
    }

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STDMETHODIMP GetMaxLength

(

DWORD *

pMaxLength

)

[inline]

Definition at line 67 of file WinMediaBuffer.h.

References CWinMediaBuffer::m_pBuffer.

Referenced by CWinAudioStream::QueueCapturedData().

{ *pMaxLength = (DWORD)m_pBuffer->bufsz; return NOERROR;}

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void init

(

DWORD

len

)

Definition at line 23 of file WinMediaBuffer.cpp.

References CWinMediaBuffer::free(), and CWinMediaBuffer::m_pBuffer.

Referenced by CWinMediaBuffer::CWinMediaBuffer().

{
    free();

    m_pBuffer = new_Buffer(0);
    if (len>0) *m_pBuffer = make_Buffer(len);
}

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STDMETHODIMP QueryInterface	(	REFIID	riid,
		void **	ppv
	)			[inline]

Definition at line 47 of file WinMediaBuffer.h.

    {
        if (riid==IID_IUnknown) {
            AddRef();
            *ppv = (IUnknown*)this;
            return NOERROR;
        }
        else if (riid==IID_IMediaBuffer) {
            AddRef();
            *ppv = (IMediaBuffer*)this;
            return NOERROR;
        }
        else return E_NOINTERFACE;
    }

STDMETHODIMP SetLength

(

DWORD

length

)

[inline]

Definition at line 66 of file WinMediaBuffer.h.

References CWinMediaBuffer::m_pBuffer.

Referenced by CWinAudioStream::Back2BufferStack(), CWinAudioStream::GetWriteBuffer(), and CWinAudioStream::QueueCapturedData().

{ m_pBuffer->vldsz = (int)length; return NOERROR;}

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STDMETHODIMP_

(

ULONG

)

[inline]

Definition at line 45 of file WinMediaBuffer.h.

{ return 1;}

STDMETHODIMP_

(

ULONG

)

[inline]

Definition at line 44 of file WinMediaBuffer.h.

{ return 2;}

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Member Data Documentation

Buffer* m_pBuffer [protected]

Definition at line 78 of file WinMediaBuffer.h.

Referenced by CWinMediaBuffer::clear(), CWinMediaBuffer::CWinMediaBuffer(), CWinMediaBuffer::free(), CWinMediaBuffer::getBuffer(), CWinMediaBuffer::GetBufferAndLength(), CWinMediaBuffer::GetMaxLength(), CWinMediaBuffer::init(), and CWinMediaBuffer::SetLength().

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The documentation for this class was generated from the following files:

• WinBaseLib/WinMediaBuffer.h
• WinBaseLib/WinMediaBuffer.cpp