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39
40#ifndef QGSTREAMERVIDEOOVERLAY_P_H
41#define QGSTREAMERVIDEOOVERLAY_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <private/qgstreamerbushelper_p.h>
55#include <private/qgstreamerbufferprobe_p.h>
56#include <QtGui/qwindowdefs.h>
57#include <QtCore/qsize.h>
58
59QT_BEGIN_NAMESPACE
60
61class QGstreamerSinkProperties;
62class QGstreamerVideoOverlay
63 : public QObject
64 , public QGstreamerSyncMessageFilter
65 , public QGstreamerBusMessageFilter
66 , private QGstreamerBufferProbe
67{
68 Q_OBJECT
69 Q_INTERFACES(QGstreamerSyncMessageFilter QGstreamerBusMessageFilter)
70public:
71 explicit QGstreamerVideoOverlay(QObject *parent = 0, const QByteArray &elementName = QByteArray());
72 virtual ~QGstreamerVideoOverlay();
73
74 GstElement *videoSink() const;
75 void setVideoSink(GstElement *);
76 QSize nativeVideoSize() const;
77
78 void setWindowHandle(WId id);
79 void expose();
80 void setRenderRectangle(const QRect &rect);
81
82 bool isActive() const;
83
84 Qt::AspectRatioMode aspectRatioMode() const;
85 void setAspectRatioMode(Qt::AspectRatioMode mode);
86
87 int brightness() const;
88 void setBrightness(int brightness);
89
90 int contrast() const;
91 void setContrast(int contrast);
92
93 int hue() const;
94 void setHue(int hue);
95
96 int saturation() const;
97 void setSaturation(int saturation);
98
99 bool processSyncMessage(const QGstreamerMessage &message) override;
100 bool processBusMessage(const QGstreamerMessage &message) override;
101
102Q_SIGNALS:
103 void nativeVideoSizeChanged();
104 void activeChanged();
105 void brightnessChanged(int brightness);
106 void contrastChanged(int contrast);
107 void hueChanged(int hue);
108 void saturationChanged(int saturation);
109
110private:
111 void setWindowHandle_helper(WId id);
112 void updateIsActive();
113 void probeCaps(GstCaps *caps) override;
114 static void showPrerollFrameChanged(GObject *, GParamSpec *, QGstreamerVideoOverlay *);
115
116 GstElement *m_videoSink = nullptr;
117 QSize m_nativeVideoSize;
118 bool m_isActive = false;
119
120 QGstreamerSinkProperties *m_sinkProperties = nullptr;
121 WId m_windowId = 0;
122};
123
124QT_END_NAMESPACE
125
126#endif // QGSTREAMERVIDEOOVERLAY_P_H
127
128

source code of qtmultimedia/src/gsttools/qgstreamervideooverlay_p.h