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    41 

    42 #ifndef DSCAMERASESSION_H

    43 #define DSCAMERASESSION_H

    44 

    45 #include <QtCore/qobject.h>

    46 #include <QTime>

    47 #include <QUrl>

    48 #include <QMutex>

    49 

    50 #include <experimental/qcamera.h>

    51 #include <QtMultimedia/qvideoframe.h>

    52 #include <QtMultimedia/qabstractvideosurface.h>

    53 #include <QtMultimedia/qvideosurfaceformat.h>

    54 

    55 #include <tchar.h>

    56 #include <dshow.h>

    57 #include <objbase.h>

    58 #include <initguid.h>

    59 #pragma comment(lib, "strmiids.lib")

    60 #pragma comment(lib, "ole32.lib")

    61 #include <windows.h>

    62 

    63 #pragma include_alias("dxtrans.h","qedit.h")

    64 #define __IDxtCompositor_INTERFACE_DEFINED__

    65 #define __IDxtAlphaSetter_INTERFACE_DEFINED__

    66 #define __IDxtJpeg_INTERFACE_DEFINED__

    67 #define __IDxtKey_INTERFACE_DEFINED__

    68 #include <qedit.h>

    69 

    70 #define SAFE_RELEASE(x) { if(x) x->Release(); x = NULL; }

    71 

    72 class DSVideoRenderer;

    73 class SampleGrabberCallbackPrivate;

    74 

    75 QTM_USE_NAMESPACE

    76 

    77 struct video_buffer {

    78     unsigned char* buffer;

    79     int            length;

    80     qint64         time;

    81 };

    82 

    83 typedef QMap<unsigned int, QList<QSize>> FormatResolutionMap;

    84 

    85 class DSCameraSession : public QObject

    86 {

    87     Q_OBJECT

    88 public:

    89     DSCameraSession(QObject *parent = 0);

    90     ~DSCameraSession();

    91 

    92     bool deviceReady();

    93 

    94     // camera controls

    95 

    96     int framerate() const;

    97     void setFrameRate(int rate);

    98     int brightness() const;

    99     void setBrightness(int b);

   100     int contrast() const;

   101     void setContrast(int c);

   102     int saturation() const;

   103     void setSaturation(int s);

   104     int hue() const;

   105     void setHue(int h);

   106     int sharpness() const;

   107     void setSharpness(int s);

   108     int zoom() const;

   109     void setZoom(int z);

   110     bool backlightCompensation() const;

   111     void setBacklightCompensation(bool);

   112     int whitelevel() const;

   113     void setWhitelevel(int w);

   114     int rotation() const;

   115     void setRotation(int r);

   116     bool flash() const;

   117     void setFlash(bool f);

   118     bool autofocus() const;

   119     void setAutofocus(bool f);

   120 

   121     QSize frameSize() const;

   122     void setFrameSize(const QSize& s);

   123     void setDevice(const QString &device);

   124     QList<QVideoFrame::PixelFormat> supportedPixelFormats();

   125     QVideoFrame::PixelFormat pixelFormat() const;

   126     void setPixelFormat(QVideoFrame::PixelFormat fmt);

   127     QList<QSize> supportedResolutions(QVideoFrame::PixelFormat format);

   128 

   129     // media control

   130 

   131     bool setOutputLocation(const QUrl &sink);

   132     QUrl outputLocation() const;

   133     qint64 position() const;

   134     int state() const;

   135     void record();

   136     void pause();

   137     void stop();

   138 

   139     void setSurface(QAbstractVideoSurface* surface);

   140 

   141     void captureImage(const QString &fileName);

   142 

   143     AM_MEDIA_TYPE StillMediaType;

   144     QList<video_buffer*> frames;

   145     SampleGrabberCallbackPrivate* StillCapCB;

   146 

   147     QMutex mutex;

   148 

   149 Q_SIGNALS:

   150     void stateChanged(QCamera::State);

   151     void imageCaptured(const QString &fileName, const QImage &img);

   152 

   153 private Q_SLOTS:

   154     void captureFrame();

   155 

   156 private:

   157     QVideoSurfaceFormat actualFormat;

   158     QList<QVideoFrame::PixelFormat> types;

   159 

   160     QTime timeStamp;

   161     bool graph;

   162     bool active;

   163     bool opened;

   164     bool available;

   165     QCamera::State m_state;

   166     QByteArray m_device;

   167     QUrl m_sink;

   168     DSVideoRenderer*   m_output;

   169     QAbstractVideoSurface* m_surface;

   170     QVideoFrame::PixelFormat pixelF;

   171     QSize m_windowSize;

   172     FormatResolutionMap resolutions;

   173 

   174     ICaptureGraphBuilder2* pBuild;

   175     IGraphBuilder* pGraph;

   176     IMediaControl* pControl;

   177     IBaseFilter* pCap;

   178     IBaseFilter* pSG_Filter;

   179     IBaseFilter* pNullRenderer;

   180     ISampleGrabber* pSG;

   181     IAMStreamConfig* pConfig;

   182     IAMVideoControl* pVideoControl;

   183     IAMVideoProcAmp* pProcAmp;

   184     IAMCameraControl* pCameraControl;

   185 

   186     QString m_snapshot;

   187 

   188 protected:

   189     HRESULT GetPin(IBaseFilter *pFilter,PIN_DIRECTION PinDir,IPin **ppPin);

   190     bool createFilterGraph();

   191     void updateProperties();

   192     bool setProperties();

   193     bool openStream();

   194     void closeStream();

   195     bool startStream();

   196     void stopStream();

   197     void suspendStream();

   198     void resumeStream();

   199 };

   200 

   201 #endif