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****************************************************************************/

#ifndef DIRECTSHOWIOSOURCE_H
#define DIRECTSHOWIOSOURCE_H

#include "directshowglobal.h"
#include "directshowioreader.h"
#include "directshowmediatype.h"

#include <QtCore/qfile.h>

QT_BEGIN_NAMESPACE

class DirectShowIOSource
    : public IBaseFilter
    , public IAMFilterMiscFlags
    , public IPin
{
    Q_DISABLE_COPY(DirectShowIOSource)
public:
    DirectShowIOSource(DirectShowEventLoop *loop);
    virtual ~DirectShowIOSource();

    void setDevice(QIODevice *device);
    void setAllocator(IMemAllocator *allocator);

    // IUnknown
    HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void **ppvObject) override;
    ULONG STDMETHODCALLTYPE AddRef() override;
    ULONG STDMETHODCALLTYPE Release() override;

    // IPersist
    HRESULT STDMETHODCALLTYPE GetClassID(CLSID *pClassID) override;

    // IMediaFilter
    HRESULT STDMETHODCALLTYPE Run(REFERENCE_TIME tStart) override;
    HRESULT STDMETHODCALLTYPE Pause() override;
    HRESULT STDMETHODCALLTYPE Stop() override;

    HRESULT STDMETHODCALLTYPE GetState(DWORD dwMilliSecsTimeout, FILTER_STATE *pState) override;

    HRESULT STDMETHODCALLTYPE SetSyncSource(IReferenceClock *pClock) override;
    HRESULT STDMETHODCALLTYPE GetSyncSource(IReferenceClock **ppClock) override;

    // IBaseFilter
    HRESULT STDMETHODCALLTYPE EnumPins(IEnumPins **ppEnum) override;
    HRESULT STDMETHODCALLTYPE FindPin(LPCWSTR Id, IPin **ppPin) override;

    HRESULT STDMETHODCALLTYPE JoinFilterGraph(IFilterGraph *pGraph, LPCWSTR pName) override;

    HRESULT STDMETHODCALLTYPE QueryFilterInfo(FILTER_INFO *pInfo) override;
    HRESULT STDMETHODCALLTYPE QueryVendorInfo(LPWSTR *pVendorInfo) override;

    // IAMFilterMiscFlags
    ULONG STDMETHODCALLTYPE GetMiscFlags() override;

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

    HRESULT STDMETHODCALLTYPE ConnectionMediaType(AM_MEDIA_TYPE *pmt) override;

    HRESULT STDMETHODCALLTYPE QueryPinInfo(PIN_INFO *pInfo) override;
    HRESULT STDMETHODCALLTYPE QueryId(LPWSTR *Id) override;

    HRESULT STDMETHODCALLTYPE QueryAccept(const AM_MEDIA_TYPE *pmt) override;

    HRESULT STDMETHODCALLTYPE EnumMediaTypes(IEnumMediaTypes **ppEnum) override;

    HRESULT STDMETHODCALLTYPE QueryInternalConnections(IPin **apPin, ULONG *nPin) override;

    HRESULT STDMETHODCALLTYPE EndOfStream() override;

    HRESULT STDMETHODCALLTYPE BeginFlush() override;
    HRESULT STDMETHODCALLTYPE EndFlush() override;

    HRESULT STDMETHODCALLTYPE NewSegment(REFERENCE_TIME tStart, REFERENCE_TIME tStop,
                                         double dRate) override;

    HRESULT STDMETHODCALLTYPE QueryDirection(PIN_DIRECTION *pPinDir) override;

private:
    volatile LONG m_ref = 1;
    FILTER_STATE m_state = State_Stopped;
    DirectShowIOReader *m_reader = nullptr;
    DirectShowEventLoop *m_loop;
    IFilterGraph *m_graph = nullptr;
    IReferenceClock *m_clock = nullptr;
    IMemAllocator *m_allocator = nullptr;
    IPin *m_peerPin = nullptr;
    DirectShowMediaType m_connectionMediaType;
    QList<DirectShowMediaType> m_supportedMediaTypes;
    QString m_filterName;
    const QString m_pinId = QLatin1String("Data");
    bool m_queriedForAsyncReader = false;
    QMutex m_mutex;
};

QT_END_NAMESPACE

#endif