qt-everywhere-src-5.14.1/qtmultimedia/src/plugins/directshow/common/directshowpinenum.h

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#ifndef DIRECTSHOWPINENUM_H
#define DIRECTSHOWPINENUM_H

#include <dshow.h>

#include <QtCore/qlist.h>
#include "directshowpin.h"

QT_BEGIN_NAMESPACE

class DirectShowBaseFilter;

class DirectShowPinEnum : public IEnumPins
{
    COM_REF_MIXIN
public:
    DirectShowPinEnum(DirectShowBaseFilter *filter);
    DirectShowPinEnum(const QList<IPin *> &pins);
    virtual ~DirectShowPinEnum();

    STDMETHODIMP QueryInterface(REFIID riid, void **ppv) override;

    // IEnumPins
    STDMETHODIMP Next(ULONG cPins, IPin **ppPins, ULONG *pcFetched) override;
    STDMETHODIMP Skip(ULONG cPins) override;
    STDMETHODIMP Reset() override;
    STDMETHODIMP Clone(IEnumPins **ppEnum) override;

private:
    Q_DISABLE_COPY(DirectShowPinEnum)

    DirectShowBaseFilter *m_filter = nullptr;
    QList<IPin *> m_pins;
    int m_index = 0;
};

QT_END_NAMESPACE

#endif