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| |
| #ifndef VIDEOSURFACEFILTER_H |
| #define VIDEOSURFACEFILTER_H |
| |
| #include "directshowbasefilter.h" |
| |
| #include <QtCore/qcoreevent.h> |
| #include <QtCore/qmutex.h> |
| #include <qreadwritelock.h> |
| #include <qsemaphore.h> |
| #include <qwaitcondition.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QAbstractVideoSurface; |
| |
| class DirectShowEventLoop; |
| class VideoSurfaceInputPin; |
| |
| class VideoSurfaceFilter : public QObject |
| , public DirectShowBaseFilter |
| , public IAMFilterMiscFlags |
| { |
| Q_OBJECT |
| COM_REF_MIXIN |
| public: |
| VideoSurfaceFilter(QAbstractVideoSurface *surface, DirectShowEventLoop *loop, QObject *parent = nullptr); |
| ~VideoSurfaceFilter(); |
| |
| STDMETHODIMP QueryInterface(REFIID riid, void **ppv) override; |
| |
| // DirectShowBaseFilter |
| QList<DirectShowPin *> pins() override; |
| |
| // IPersist |
| STDMETHODIMP GetClassID(CLSID *pClassID) override; |
| |
| // IMediaFilter |
| STDMETHODIMP Run(REFERENCE_TIME tStart) override; |
| STDMETHODIMP Pause() override; |
| STDMETHODIMP Stop() override; |
| |
| // IAMFilterMiscFlags |
| STDMETHODIMP_(ULONG) GetMiscFlags() override; |
| |
| // DirectShowPin (delegate) |
| bool isMediaTypeSupported(const AM_MEDIA_TYPE *type); |
| bool setMediaType(const AM_MEDIA_TYPE *type); |
| HRESULT completeConnection(IPin *pin); |
| HRESULT connectionEnded(); |
| |
| // IPin (delegate) |
| HRESULT EndOfStream(); |
| HRESULT BeginFlush(); |
| HRESULT EndFlush(); |
| |
| // IMemInputPin (delegate) |
| HRESULT Receive(IMediaSample *pMediaSample); |
| |
| private Q_SLOTS: |
| void supportedFormatsChanged(); |
| void checkEOS(); |
| |
| private: |
| enum Events { |
| StartSurface = QEvent::User, |
| StopSurface = QEvent::User + 1, |
| RestartSurface = QEvent::User + 2, |
| FlushSurface = QEvent::User + 3, |
| RenderSample = QEvent::User + 4 |
| }; |
| |
| bool event(QEvent *) override; |
| |
| bool startSurface(); |
| void stopSurface(); |
| bool restartSurface(); |
| void flushSurface(); |
| |
| bool scheduleSample(IMediaSample *sample); |
| void unscheduleSample(); |
| void renderPendingSample(); |
| void clearPendingSample(); |
| |
| void notifyEOS(); |
| void resetEOS(); |
| void resetEOSTimer(); |
| void onEOSTimerTimeout(); |
| |
| friend void QT_WIN_CALLBACK EOSTimerCallback(UINT, UINT, DWORD_PTR dwUser, DWORD_PTR, DWORD_PTR); |
| |
| QMutex m_mutex; |
| |
| DirectShowEventLoop *m_loop; |
| VideoSurfaceInputPin *m_pin = nullptr; |
| |
| QWaitCondition m_waitSurface; |
| QAbstractVideoSurface *m_surface; |
| QVideoSurfaceFormat m_surfaceFormat; |
| int m_bytesPerLine = 0; |
| bool m_surfaceStarted = false; |
| |
| QList<GUID> m_supportedTypes; |
| QReadWriteLock m_typesLock; |
| |
| QRecursiveMutex m_renderMutex; |
| bool m_running = false; |
| IMediaSample *m_pendingSample = nullptr; |
| REFERENCE_TIME m_pendingSampleEndTime = 0; |
| HANDLE m_renderEvent; |
| HANDLE m_flushEvent; |
| DWORD_PTR m_adviseCookie = 0; |
| |
| bool m_EOS = false; |
| bool m_EOSDelivered = false; |
| UINT m_EOSTimer = 0; |
| |
| friend class VideoSurfaceInputPin; |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif |