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#ifndef DIRECTSHOWPIN_H
#define DIRECTSHOWPIN_H

#include "directshowobject.h"

#include "directshowmediatype.h"
#include <qstring.h>
#include <qmutex.h>

QT_USE_NAMESPACE

class DirectShowBaseFilter;

class DirectShowPin : public DirectShowObject
                    , public IPin
{
    DIRECTSHOW_OBJECT

public:
    virtual ~DirectShowPin();

    QString name() const { return m_name; }
    bool isConnected() const { return m_peerPin != NULL; }

    virtual bool isMediaTypeSupported(const DirectShowMediaType *type) = 0;
    virtual QList<DirectShowMediaType> supportedMediaTypes();
    virtual bool setMediaType(const DirectShowMediaType *type);

    virtual HRESULT completeConnection(IPin *pin);
    virtual HRESULT connectionEnded();

    virtual HRESULT setActive(bool active);

    // DirectShowObject
    HRESULT getInterface(REFIID riid, void **ppvObject);

    // IPin
    STDMETHODIMP Connect(IPin *pReceivePin, const AM_MEDIA_TYPE *pmt);
    STDMETHODIMP ReceiveConnection(IPin *pConnector, const AM_MEDIA_TYPE *pmt);
    STDMETHODIMP Disconnect();
    STDMETHODIMP ConnectedTo(IPin **ppPin);

    STDMETHODIMP ConnectionMediaType(AM_MEDIA_TYPE *pmt);

    STDMETHODIMP QueryPinInfo(PIN_INFO *pInfo);
    STDMETHODIMP QueryId(LPWSTR *Id);

    STDMETHODIMP QueryAccept(const AM_MEDIA_TYPE *pmt);

    STDMETHODIMP EnumMediaTypes(IEnumMediaTypes **ppEnum);

    STDMETHODIMP QueryInternalConnections(IPin **apPin, ULONG *nPin);

    STDMETHODIMP EndOfStream();

    STDMETHODIMP BeginFlush();
    STDMETHODIMP EndFlush();

    STDMETHODIMP NewSegment(REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate);

    STDMETHODIMP QueryDirection(PIN_DIRECTION *pPinDir);

protected:
    DirectShowPin(DirectShowBaseFilter *filter, const QString &name, PIN_DIRECTION direction);

    QMutex m_mutex;

    DirectShowBaseFilter *m_filter;
    QString m_name;
    PIN_DIRECTION m_direction;

    IPin *m_peerPin;
    DirectShowMediaType m_mediaType;

private:
    Q_DISABLE_COPY(DirectShowPin)
    HRESULT tryMediaTypes(IPin *pin, const DirectShowMediaType *type, IEnumMediaTypes *enumMediaTypes);
    HRESULT tryConnect(IPin *pin, const DirectShowMediaType *type);
};


class DirectShowOutputPin : public DirectShowPin
{
    DIRECTSHOW_OBJECT

public:
    virtual ~DirectShowOutputPin();

    // DirectShowPin
    virtual HRESULT completeConnection(IPin *pin);
    virtual HRESULT connectionEnded();
    virtual HRESULT setActive(bool active);

    // IPin
    STDMETHODIMP EndOfStream();

protected:
    DirectShowOutputPin(DirectShowBaseFilter *filter, const QString &name);

    IMemAllocator *m_allocator;
    IMemInputPin *m_inputPin;

private:
    Q_DISABLE_COPY(DirectShowOutputPin)
};


class DirectShowInputPin : public DirectShowPin
                         , public IMemInputPin
{
    DIRECTSHOW_OBJECT

public:
    virtual ~DirectShowInputPin();

    const AM_SAMPLE2_PROPERTIES *currentSampleProperties() const { return &m_sampleProperties; }

    // DirectShowObject
    HRESULT getInterface(REFIID riid, void **ppvObject);

    // DirectShowPin
    HRESULT connectionEnded();
    HRESULT setActive(bool active);

    // IPin
    STDMETHODIMP EndOfStream();
    STDMETHODIMP BeginFlush();
    STDMETHODIMP EndFlush();

    // IMemInputPin
    STDMETHODIMP GetAllocator(IMemAllocator **ppAllocator);
    STDMETHODIMP NotifyAllocator(IMemAllocator *pAllocator, BOOL bReadOnly);
    STDMETHODIMP GetAllocatorRequirements(ALLOCATOR_PROPERTIES *pProps);

    STDMETHODIMP Receive(IMediaSample *pSample);
    STDMETHODIMP ReceiveMultiple(IMediaSample **pSamples, long nSamples, long *nSamplesProcessed);
    STDMETHODIMP ReceiveCanBlock();

protected:
    DirectShowInputPin(DirectShowBaseFilter *filter, const QString &name);

    IMemAllocator *m_allocator;
    bool m_flushing;
    bool m_inErrorState;
    AM_SAMPLE2_PROPERTIES m_sampleProperties;

private:
    Q_DISABLE_COPY(DirectShowInputPin)
};

#endif // DIRECTSHOWPIN_H