CWinAudioTool Class Reference

#include <WinAudioTool.h>

Collaboration diagram for CWinAudioTool:

[legend]

List of all members.

Public Member Functions
	CWinAudioTool (void)
virtual	~CWinAudioTool (void)
BOOL	init (void)
void	free (void)
IStream *	getIStream (void)
BOOL	setMediaType (void)
BOOL	startCapture (void)
void	stopCapture (void)
Buffer	getAudioData (void)
void	getAudioData (Buffer *pbuf)
BOOL	openOutput (void)
void	closeOutput (void)
WAVEFORMATEX	getAudioFormat (void)
Private Member Functions
CWinAudioTool &	operator= (CWinAudioTool &rhs)
Private Attributes
CWinAudioStream *	m_audioStream
IMediaObject *	m_audioMedia
IPropertyStore *	m_audioProperty
IStream *	m_pStream

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Detailed Description

Definition at line 40 of file WinAudioTool.h.

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Constructor & Destructor Documentation

CWinAudioTool

(

void

)

Definition at line 17 of file WinAudioTool.cpp.

References CWinAudioTool::init(), CWinAudioTool::m_audioMedia, CWinAudioTool::m_audioProperty, CWinAudioTool::m_audioStream, and CWinAudioTool::m_pStream.

{
    m_audioStream   = NULL;
    m_audioMedia    = NULL;
    m_audioProperty = NULL;
    m_pStream       = NULL;

    //
    init();
}

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~CWinAudioTool

(

void

)

[virtual]

Definition at line 30 of file WinAudioTool.cpp.

References CWinAudioTool::free().

{
    DEBUG_INFO("DESTRUCTOR: CWinAudioTool: START\n");

    free();

    DEBUG_INFO("DESTRUCTOR: CWinAudioTool: END\n");
}

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Member Function Documentation

void closeOutput

(

void

)

[inline]

Definition at line 62 of file WinAudioTool.h.

References CWinAudioStream::closeOutput(), and CWinAudioTool::m_audioStream.

{ if (m_audioStream!=NULL) m_audioStream->closeOutput();}

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void free

(

void

)

Definition at line 61 of file WinAudioTool.cpp.

References jbxwl::deleteNull(), CWinAudioTool::m_audioMedia, CWinAudioTool::m_audioProperty, CWinAudioTool::m_audioStream, CWinAudioTool::m_pStream, and jbxwl::releaseNull().

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

{
    releaseNull(m_pStream);
    deleteNull (m_audioStream);

    releaseNull(m_audioProperty);
    releaseNull(m_audioMedia);
}

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void getAudioData

(

Buffer *

pbuf

)

Definition at line 101 of file WinAudioTool.cpp.

References CWinAudioTool::m_pStream.

{
    if (m_pStream==NULL || pbuf==NULL) return;

    ULONG len = 0;

    m_pStream->Read((void*)pbuf->buf, (ULONG)pbuf->bufsz, &len);
    pbuf->vldsz = (int)len;

    return;
}

Buffer getAudioData

(

void

)

[inline]

Definition at line 57 of file WinAudioTool.h.

References CWinAudioStream::input(), and CWinAudioTool::m_audioStream.

{ if (m_audioStream!=NULL) return m_audioStream->input(); else return init_Buffer();} // not free

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WAVEFORMATEX getAudioFormat

(

void

)

Definition at line 115 of file WinAudioTool.cpp.

References jbxwl::WinAudioToolBitsPerSample, jbxwl::WinAudioToolChannels, jbxwl::WinAudioToolFormat, and jbxwl::WinAudioToolSamplesPerSec.

Referenced by CWinAudioTool::setMediaType().

{
    WORD   blockAlign = ((WinAudioToolBitsPerSample+7)/8)*WinAudioToolChannels;
    DWORD  avgBytesPerSec = blockAlign*WinAudioToolSamplesPerSec;

    WAVEFORMATEX format = {
        WinAudioToolFormat, WinAudioToolChannels, WinAudioToolSamplesPerSec, 
        avgBytesPerSec, blockAlign, WinAudioToolBitsPerSample, 0
    };
    return format;
}

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IStream* getIStream

(

void

)

[inline]

Definition at line 49 of file WinAudioTool.h.

References CWinAudioTool::m_pStream.

{ return m_pStream;}

BOOL init

(

void

)

Definition at line 41 of file WinAudioTool.cpp.

References CWinAudioTool::free(), CWinAudioTool::m_audioMedia, CWinAudioTool::m_audioStream, CWinAudioTool::m_pStream, CWinAudioStream::QueryInterface(), and CWinAudioTool::setMediaType().

Referenced by CWinAudioTool::CWinAudioTool().

{
    free();

//  if (SUCCEEDED(hr)) hr = m_audioSource->QueryInterface(IID_IMediaObject,   (void**)&m_audioMedia);
//  if (SUCCEEDED(hr)) hr = m_audioSource->QueryInterface(IID_IPropertyStore, (void**)&m_audioProperty);
    //
    //BOOL ret = setProperty(mode);
    BOOL ret = setMediaType();
    if (ret) {
        m_audioStream = new CWinAudioStream(m_audioMedia);
        m_audioStream->QueryInterface(IID_IStream, (void**)&m_pStream);
        return TRUE;
    }

    return FALSE;
}

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BOOL openOutput

(

void

)

[inline]

Definition at line 61 of file WinAudioTool.h.

References CWinAudioTool::m_audioStream, and CWinAudioStream::openOutput().

{ if (m_audioStream!=NULL) return m_audioStream->openOutput(); else return FALSE;}

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CWinAudioTool& operator=

(

CWinAudioTool &

rhs

)

[inline, private]

Definition at line 78 of file WinAudioTool.h.

{ return rhs;}

BOOL setMediaType

(

void

)

Definition at line 72 of file WinAudioTool.cpp.

References CWinAudioTool::getAudioFormat(), CWinAudioTool::m_audioMedia, CWinAudioTool::m_audioStream, CWinAudioTool::m_pStream, and CWinAudioStream::QueryInterface().

Referenced by CWinAudioTool::init().

{
    if (m_audioMedia==NULL) return FALSE;

    DMO_MEDIA_TYPE mt = {0};
    MoInitMediaType(&mt, sizeof(WAVEFORMATEX));
    mt.majortype = MEDIATYPE_Audio;
    mt.subtype   = MEDIASUBTYPE_PCM;
    mt.lSampleSize = 0;
    mt.bFixedSizeSamples    = TRUE;
    mt.bTemporalCompression = FALSE;
    mt.formattype = FORMAT_WaveFormatEx;    
    memcpy(mt.pbFormat, &getAudioFormat(), sizeof(WAVEFORMATEX));
    
    HRESULT hr = m_audioMedia->SetOutputType(0, &mt, 0);
    MoFreeMediaType(&mt);

    if (FAILED(hr)) return FALSE;
    return TRUE;

    //
    if (SUCCEEDED(hr)) { 
        m_audioStream = new CWinAudioStream(m_audioMedia);
        m_audioStream->QueryInterface(IID_IStream, (void**)&m_pStream);
    }
}

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BOOL startCapture

(

void

)

[inline]

Definition at line 54 of file WinAudioTool.h.

References CWinAudioTool::m_audioStream, and CWinAudioStream::startCapture().

{ if (m_audioStream!=NULL) return m_audioStream->startCapture(); else return FALSE;}

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void stopCapture

(

void

)

[inline]

Definition at line 55 of file WinAudioTool.h.

References CWinAudioTool::m_audioStream, and CWinAudioStream::stopCapture().

{ if (m_audioStream!=NULL) m_audioStream->stopCapture(); }

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Member Data Documentation

IMediaObject* m_audioMedia [private]

Definition at line 72 of file WinAudioTool.h.

Referenced by CWinAudioTool::CWinAudioTool(), CWinAudioTool::free(), CWinAudioTool::init(), and CWinAudioTool::setMediaType().

IPropertyStore* m_audioProperty [private]

Definition at line 73 of file WinAudioTool.h.

Referenced by CWinAudioTool::CWinAudioTool(), and CWinAudioTool::free().

CWinAudioStream* m_audioStream [private]

Definition at line 70 of file WinAudioTool.h.

Referenced by CWinAudioTool::closeOutput(), CWinAudioTool::CWinAudioTool(), CWinAudioTool::free(), CWinAudioTool::getAudioData(), CWinAudioTool::init(), CWinAudioTool::openOutput(), CWinAudioTool::setMediaType(), CWinAudioTool::startCapture(), and CWinAudioTool::stopCapture().

IStream* m_pStream [private]

Definition at line 74 of file WinAudioTool.h.

Referenced by CWinAudioTool::CWinAudioTool(), CWinAudioTool::free(), CWinAudioTool::getAudioData(), CWinAudioTool::getIStream(), CWinAudioTool::init(), and CWinAudioTool::setMediaType().

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

• WinBaseLib/WinAudioTool.h
• WinBaseLib/WinAudioTool.cpp