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39
40#ifndef QGSTVIDEORENDERERPLUGIN_P_H
41#define QGSTVIDEORENDERERPLUGIN_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/qgsttools_global_p.h>
55#include <qabstractvideobuffer.h>
56#include <qvideosurfaceformat.h>
57#include <QtCore/qobject.h>
58#include <QtCore/qplugin.h>
59
60#include <gst/gst.h>
61
62QT_BEGIN_NAMESPACE
63
64class QAbstractVideoSurface;
65
66const QLatin1String QGstVideoRendererPluginKey("gstvideorenderer");
67
68class Q_GSTTOOLS_EXPORT QGstVideoRenderer
69{
70public:
71 virtual ~QGstVideoRenderer() {}
72
73 virtual GstCaps *getCaps(QAbstractVideoSurface *surface) = 0;
74 virtual bool start(QAbstractVideoSurface *surface, GstCaps *caps) = 0;
75 virtual void stop(QAbstractVideoSurface *surface) = 0; // surface may be null if unexpectedly deleted.
76 virtual bool proposeAllocation(GstQuery *query) = 0; // may be called from a thread.
77
78 virtual bool present(QAbstractVideoSurface *surface, GstBuffer *buffer) = 0;
79 virtual void flush(QAbstractVideoSurface *surface) = 0; // surface may be null if unexpectedly deleted.
80};
81
82/*
83 Abstract interface for video buffers allocation.
84*/
85class Q_GSTTOOLS_EXPORT QGstVideoRendererInterface
86{
87public:
88 virtual ~QGstVideoRendererInterface() {}
89
90 virtual QGstVideoRenderer *createRenderer() = 0;
91};
92
93#define QGstVideoRendererInterface_iid "org.qt-project.qt.gstvideorenderer/5.4"
94Q_DECLARE_INTERFACE(QGstVideoRendererInterface, QGstVideoRendererInterface_iid)
95
96class Q_GSTTOOLS_EXPORT QGstVideoRendererPlugin : public QObject, public QGstVideoRendererInterface
97{
98 Q_OBJECT
99 Q_INTERFACES(QGstVideoRendererInterface)
100public:
101 explicit QGstVideoRendererPlugin(QObject *parent = 0);
102 virtual ~QGstVideoRendererPlugin() {}
103
104 QGstVideoRenderer *createRenderer() override = 0;
105
106};
107
108QT_END_NAMESPACE
109
110#endif
111

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