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    41 

    42 #ifndef V4LCAMERASESSION_H

    43 #define V4LCAMERASESSION_H

    44 

    45 #include <QtCore/qobject.h>

    46 #include <QSocketNotifier>

    47 #include <QTime>

    48 #include <QUrl>

    49 #include <QFile>

    50 

    51 #include <qmediarecorder.h>

    52 #include <experimental/qcamera.h>

    53 #include <QtMultimedia/qvideoframe.h>

    54 #include <QtMultimedia/qabstractvideosurface.h>

    55 

    56 #include "cameraformatconverter.h"

    57 QTM_USE_NAMESPACE

    58 

    59 class V4LVideoRenderer;

    60 

    61 struct video_buffer {

    62     void* start;

    63     size_t length;

    64 };

    65 

    66 class V4LCameraSession : public QObject

    67 {

    68     Q_OBJECT

    69 public:

    70     V4LCameraSession(QObject *parent = 0);

    71     ~V4LCameraSession();

    72 

    73     bool deviceReady();

    74 

    75     // camera controls

    76 

    77     int framerate() const;

    78     void setFrameRate(int rate);

    79     int brightness() const;

    80     void setBrightness(int b);

    81     int contrast() const;

    82     void setContrast(int c);

    83     int saturation() const;

    84     void setSaturation(int s);

    85     int hue() const;

    86     void setHue(int h);

    87     int sharpness() const;

    88     void setSharpness(int s);

    89     int zoom() const;

    90     void setZoom(int z);

    91     bool backlightCompensation() const;

    92     void setBacklightCompensation(bool);

    93     int whitelevel() const;

    94     void setWhitelevel(int w);

    95     int rotation() const;

    96     void setRotation(int r);

    97     bool flash() const;

    98     void setFlash(bool f);

    99     bool autofocus() const;

   100     void setAutofocus(bool f);

   101 

   102     QSize frameSize() const;

   103     void setFrameSize(const QSize& s);

   104     void setDevice(const QString &device);

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

   106     QVideoFrame::PixelFormat pixelFormat() const;

   107     void setPixelFormat(QVideoFrame::PixelFormat fmt);

   108     QList<QSize> supportedResolutions();

   109 

   110     // media control

   111 

   112     bool setOutputLocation(const QUrl &sink);

   113     QUrl outputLocation() const;

   114     qint64 position() const;

   115     QMediaRecorder::State state() const;

   116     void record();

   117     void pause();

   118     void stop();

   119 

   120     void setSurface(QAbstractVideoSurface* surface);

   121 

   122     void captureImage(const QString &fileName);

   123 

   124     void previewMode(bool value);

   125     void captureToFile(bool value);

   126 

   127 Q_SIGNALS:

   128     void cameraStateChanged(QCamera::State);

   129     void recordStateChanged(QMediaRecorder::State);

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

   131 

   132 private Q_SLOTS:

   133     void captureFrame();

   134 

   135 private:

   136     bool isFormatSupported(QVideoFrame::PixelFormat fmt);

   137 

   138     QSocketNotifier *notifier;

   139     QList<video_buffer> buffers;

   140 

   141     int sfd;

   142     QTime timeStamp;

   143     bool available;

   144     bool preview;

   145     bool toFile;

   146     bool active;

   147     QMediaRecorder::State m_state;

   148     QByteArray m_device;

   149     QUrl m_sink;

   150     QFile m_file;

   151     V4LVideoRenderer*   m_output;

   152     QAbstractVideoSurface* m_surface;

   153     QVideoFrame::PixelFormat pixelF;

   154     QVideoFrame::PixelFormat savedPixelF;

   155     QSize m_windowSize;

   156     QList<QSize> resolutions;

   157     QList<unsigned int> formats;

   158 

   159     CameraFormatConverter* converter;

   160 

   161     QString m_snapshot;

   162 };

   163 

   164 #endif