samplegrabber_p.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef SAMPLEGRABBER_H
#define SAMPLEGRABBER_H
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
 
#include <QtCore/qmutex.h>
#include <QtCore/qlist.h>
#include <QtMultimedia/qaudioformat.h>
#include <mfapi.h>
#include <mfidl.h>
 
QT_BEGIN_NAMESPACE
 
class SampleGrabberCallback : public IMFSampleGrabberSinkCallback
{
public:
    // IUnknown methods
    STDMETHODIMP QueryInterface(REFIID iid, void** ppv) override;
    STDMETHODIMP_(ULONG) AddRef() override;
    STDMETHODIMP_(ULONG) Release() override;
 
    // IMFClockStateSink methods
    STDMETHODIMP OnClockStart(MFTIME hnsSystemTime, LONGLONG llClockStartOffset) override;
    STDMETHODIMP OnClockStop(MFTIME hnsSystemTime) override;
    STDMETHODIMP OnClockPause(MFTIME hnsSystemTime) override;
    STDMETHODIMP OnClockRestart(MFTIME hnsSystemTime) override;
    STDMETHODIMP OnClockSetRate(MFTIME hnsSystemTime, float flRate) override;
 
    // IMFSampleGrabberSinkCallback methods
    STDMETHODIMP OnSetPresentationClock(IMFPresentationClock* pClock) override;
    STDMETHODIMP OnShutdown() override;
 
protected:
    SampleGrabberCallback() : m_cRef(1) {}
 
public:
    virtual ~SampleGrabberCallback() {}
 
private:
    long m_cRef;
};
 
class AudioSampleGrabberCallback: public SampleGrabberCallback {
public:
    void setFormat(const QAudioFormat& format);
 
    STDMETHODIMP OnProcessSample(REFGUID guidMajorMediaType, DWORD dwSampleFlags,
        LONGLONG llSampleTime, LONGLONG llSampleDuration, const BYTE * pSampleBuffer,
        DWORD dwSampleSize) override;
 
private:
//    QList<MFAudioProbeControl*> m_audioProbes;
    QMutex m_audioProbeMutex;
    QAudioFormat m_format;
};
 
QT_END_NAMESPACE
 
#endif // SAMPLEGRABBER_H