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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef VIDEOSURFACEGSTSINK_H
#define VIDEOSURFACEGSTSINK_H
#include <gst/video/gstvideosink.h>
#include <QtCore/qlist.h>
#include <QtCore/qmutex.h>
#include <QtCore/qpointer.h>
#include <QtCore/qwaitcondition.h>
#include <QtMultimedia/qvideosurfaceformat.h>
#include <QtMultimedia/qvideoframe.h>
#include <QtMultimedia/qabstractvideobuffer.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
class QAbstractVideoSurface;
#ifdef Q_WS_X11
class QGstXvImageBuffer;
class QGstXvImageBufferPool;
#endif
class QVideoSurfaceGstDelegate : public QObject
{
Q_OBJECT
public:
QVideoSurfaceGstDelegate(QAbstractVideoSurface *surface);
QList<QVideoFrame::PixelFormat> supportedPixelFormats(
QAbstractVideoBuffer::HandleType handleType = QAbstractVideoBuffer::NoHandle) const;
QVideoSurfaceFormat surfaceFormat() const;
bool start(const QVideoSurfaceFormat &format, int bytesPerLine);
void stop();
bool isActive();
GstFlowReturn render(GstBuffer *buffer);
private slots:
void queuedStart();
void queuedStop();
void queuedRender();
void supportedFormatsChanged();
private:
QPointer<QAbstractVideoSurface> m_surface;
QList<QVideoFrame::PixelFormat> m_supportedPixelFormats;
QMutex m_mutex;
QWaitCondition m_setupCondition;
QWaitCondition m_renderCondition;
QVideoSurfaceFormat m_format;
QVideoFrame m_frame;
GstFlowReturn m_renderReturn;
int m_bytesPerLine;
bool m_started;
};
class QVideoSurfaceGstSink
{
public:
GstVideoSink parent;
static QVideoSurfaceGstSink *createSink(QAbstractVideoSurface *surface);
static QVideoSurfaceFormat formatForCaps(GstCaps *caps, int *bytesPerLine = 0);
private:
static GType get_type();
static void class_init(gpointer g_class, gpointer class_data);
static void base_init(gpointer g_class);
static void instance_init(GTypeInstance *instance, gpointer g_class);
static void finalize(GObject *object);
static GstStateChangeReturn change_state(GstElement *element, GstStateChange transition);
static GstCaps *get_caps(GstBaseSink *sink);
static gboolean set_caps(GstBaseSink *sink, GstCaps *caps);
static GstFlowReturn buffer_alloc(
GstBaseSink *sink, guint64 offset, guint size, GstCaps *caps, GstBuffer **buffer);
static gboolean start(GstBaseSink *sink);
static gboolean stop(GstBaseSink *sink);
static gboolean unlock(GstBaseSink *sink);
static gboolean event(GstBaseSink *sink, GstEvent *event);
static GstFlowReturn preroll(GstBaseSink *sink, GstBuffer *buffer);
static GstFlowReturn render(GstBaseSink *sink, GstBuffer *buffer);
private:
QVideoSurfaceGstDelegate *delegate;
#ifdef Q_WS_X11
QGstXvImageBufferPool *pool;
#endif
GstCaps *lastRequestedCaps;
GstCaps *lastBufferCaps;
QVideoSurfaceFormat *lastSurfaceFormat;
};
class QVideoSurfaceGstSinkClass
{
public:
GstVideoSinkClass parent_class;
};
QT_END_NAMESPACE
QT_END_HEADER
#endif
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