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| |
| #ifndef DSCAMERASESSION_H |
| #define DSCAMERASESSION_H |
| |
| #include <QtCore/qobject.h> |
| #include <QTime> |
| #include <QUrl> |
| #include <QMutex> |
| #include <QTimer> |
| #include <qcamera.h> |
| #include <QtMultimedia/qvideoframe.h> |
| #include <QtMultimedia/qabstractvideosurface.h> |
| #include <QtMultimedia/qvideosurfaceformat.h> |
| #include <QtMultimedia/qcameraimageprocessingcontrol.h> |
| #include <QtMultimedia/qcameraimagecapture.h> |
| #include <QtMultimedia/qmediaencodersettings.h> |
| #include <private/qmediastoragelocation_p.h> |
| |
| #include <tchar.h> |
| #include <dshow.h> |
| #include <objbase.h> |
| #include <initguid.h> |
| #include "directshowmediatype.h" |
| #ifdef Q_CC_MSVC |
| # pragma comment(lib, "strmiids.lib") |
| # pragma comment(lib, "ole32.lib") |
| #endif // Q_CC_MSVC |
| #include <windows.h> |
| |
| #ifdef Q_CC_MSVC |
| # pragma include_alias("dxtrans.h","qedit.h") |
| #endif // Q_CC_MSVC |
| #define __IDxtCompositor_INTERFACE_DEFINED__ |
| #define __IDxtAlphaSetter_INTERFACE_DEFINED__ |
| #define __IDxtJpeg_INTERFACE_DEFINED__ |
| #define __IDxtKey_INTERFACE_DEFINED__ |
| |
| struct ICaptureGraphBuilder2; |
| |
| QT_BEGIN_NAMESPACE |
| |
| class DirectShowSampleGrabber; |
| class DirectShowVideoProbeControl; |
| |
| class DSCameraSession : public QObject |
| { |
| Q_OBJECT |
| public: |
| DSCameraSession(QObject *parent = nullptr); |
| ~DSCameraSession() override; |
| |
| QCamera::Status status() const { return m_status; } |
| |
| void setDevice(const QString &device); |
| |
| bool load(); |
| bool unload(); |
| bool startPreview(); |
| bool stopPreview(); |
| |
| bool isReadyForCapture(); |
| int captureImage(const QString &fileName); |
| |
| void setSurface(QAbstractVideoSurface* surface); |
| |
| QCameraViewfinderSettings viewfinderSettings() const; |
| void setViewfinderSettings(const QCameraViewfinderSettings &settings); |
| |
| QList<QCameraViewfinderSettings> supportedViewfinderSettings() const |
| { return m_supportedViewfinderSettings; } |
| |
| bool isImageProcessingParameterSupported( |
| QCameraImageProcessingControl::ProcessingParameter) const; |
| |
| bool isImageProcessingParameterValueSupported( |
| QCameraImageProcessingControl::ProcessingParameter, |
| const QVariant &) const; |
| |
| QVariant imageProcessingParameter( |
| QCameraImageProcessingControl::ProcessingParameter) const; |
| |
| void setImageProcessingParameter( |
| QCameraImageProcessingControl::ProcessingParameter, |
| const QVariant &); |
| |
| bool getCameraControlInterface(IAMCameraControl **cameraControl) const; |
| |
| bool isCaptureDestinationSupported(QCameraImageCapture::CaptureDestinations destination) const; |
| QCameraImageCapture::CaptureDestinations captureDestination() const; |
| void setCaptureDestination(QCameraImageCapture::CaptureDestinations destinations); |
| |
| void addVideoProbe(DirectShowVideoProbeControl *probe); |
| void removeVideoProbe(DirectShowVideoProbeControl *probe); |
| |
| QList<QSize> supportedResolutions(bool *continuous) const; |
| QImageEncoderSettings imageEncoderSettings() const { return m_imageEncoderSettings; } |
| void setImageEncoderSettings(const QImageEncoderSettings &settings) |
| { m_imageEncoderSettings = settings; } |
| |
| Q_SIGNALS: |
| void statusChanged(QCamera::Status); |
| void imageExposed(int id); |
| void imageCaptured(int id, const QImage &preview); |
| void imageSaved(int id, const QString &fileName); |
| void imageAvailable(int id, const QVideoFrame &buffer); |
| void readyForCaptureChanged(bool); |
| void captureError(int id, int error, const QString &errorString); |
| void captureDestinationChanged(QCameraImageCapture::CaptureDestinations); |
| void cameraError(int error, const QString &errorString); |
| |
| private Q_SLOTS: |
| void presentFrame(); |
| void updateReadyForCapture(); |
| |
| private: |
| struct ImageProcessingParameterInfo |
| { |
| LONG minimumValue = 0; |
| LONG maximumValue = 0; |
| LONG defaultValue = 0; |
| LONG currentValue = 0; |
| LONG capsFlags = 0; |
| bool hasBeenExplicitlySet = false; |
| VideoProcAmpProperty videoProcAmpProperty = VideoProcAmp_Brightness; |
| }; |
| |
| void setStatus(QCamera::Status status); |
| |
| void onFrameAvailable(double time, const QByteArray &data); |
| void processCapturedImage(int id, QCameraImageCapture::CaptureDestinations captureDestinations, const QImage &image, const QString &path); |
| |
| bool createFilterGraph(); |
| bool connectGraph(); |
| void disconnectGraph(); |
| void updateSourceCapabilities(); |
| bool configurePreviewFormat(); |
| void updateImageProcessingParametersInfos(); |
| void setError(int error, const QString &errorString, HRESULT hr); |
| |
| // These static functions are used for scaling of adjustable parameters, |
| // which have the ranges from -1.0 to +1.0 in the QCameraImageProcessing API. |
| static qreal scaledImageProcessingParameterValue( |
| const ImageProcessingParameterInfo &sourceValueInfo); |
| static qint32 sourceImageProcessingParameterValue( |
| qreal scaledValue, const ImageProcessingParameterInfo &sourceValueInfo); |
| |
| QMutex m_presentMutex; |
| QMutex m_captureMutex; |
| |
| ICaptureGraphBuilder2* m_graphBuilder = nullptr; |
| IGraphBuilder* m_filterGraph = nullptr; |
| |
| // Source (camera) |
| QString m_sourceDeviceName = QLatin1String("default"); |
| IBaseFilter* m_sourceFilter = nullptr; |
| bool m_needsHorizontalMirroring = false; |
| QList<DirectShowMediaType> m_supportedFormats; |
| QList<QCameraViewfinderSettings> m_supportedViewfinderSettings; |
| DirectShowMediaType m_sourceFormat; |
| QMap<QCameraImageProcessingControl::ProcessingParameter, ImageProcessingParameterInfo> m_imageProcessingParametersInfos; |
| |
| // Preview |
| DirectShowSampleGrabber *m_previewSampleGrabber = nullptr; |
| IBaseFilter *m_nullRendererFilter = nullptr; |
| QVideoFrame m_currentFrame; |
| bool m_previewStarted = false; |
| QAbstractVideoSurface* m_surface = nullptr; |
| QVideoSurfaceFormat m_previewSurfaceFormat; |
| QVideoFrame::PixelFormat m_previewPixelFormat = QVideoFrame::Format_RGB32; |
| QSize m_previewSize; |
| int m_stride = -1; |
| QCameraViewfinderSettings m_viewfinderSettings; |
| QCameraViewfinderSettings m_actualViewfinderSettings; |
| |
| // Image capture |
| QString m_imageCaptureFileName; |
| QMediaStorageLocation m_fileNameGenerator; |
| bool m_readyForCapture = false; |
| int m_imageIdCounter = 0; |
| int m_currentImageId = -1; |
| QVideoFrame m_capturedFrame; |
| QCameraImageCapture::CaptureDestinations m_captureDestinations = QCameraImageCapture::CaptureToFile; |
| |
| // Video probe |
| QMutex m_probeMutex; |
| DirectShowVideoProbeControl *m_videoProbeControl = nullptr; |
| |
| QImageEncoderSettings m_imageEncoderSettings; |
| |
| // Internal state |
| QCamera::Status m_status = QCamera::UnloadedStatus; |
| QTimer m_deviceLostEventTimer; |
| |
| QMap<QCameraImageProcessingControl::ProcessingParameter, QVariant> m_pendingImageProcessingParametrs; |
| |
| friend class SampleGrabberCallbackPrivate; |
| }; |
| |
| QT_END_NAMESPACE |
| |
| |
| #endif |