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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef VIDEOSURFACEGSTSINK_P_H
#define VIDEOSURFACEGSTSINK_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <gst/video/gstvideosink.h>
#include <QtCore/qlist.h>
#include <QtCore/qmutex.h>
#include <QtCore/qqueue.h>
#include <QtCore/qpointer.h>
#include <QtCore/qwaitcondition.h>
#include <qvideosurfaceformat.h>
#include <qvideoframe.h>
#include <qabstractvideobuffer.h>
#include "qgstbufferpoolinterface_p.h"
QT_BEGIN_NAMESPACE
class QAbstractVideoSurface;
#ifdef HAVE_XVIDEO
class QGstXvImageBuffer;
class QGstXvImageBufferPool;
#endif
class QVideoSurfaceGstDelegate : public QObject
{
Q_OBJECT
public:
QVideoSurfaceGstDelegate(QAbstractVideoSurface *surface);
~QVideoSurfaceGstDelegate();
QList<QVideoFrame::PixelFormat> supportedPixelFormats(
QAbstractVideoBuffer::HandleType handleType = QAbstractVideoBuffer::NoHandle) const;
QVideoSurfaceFormat surfaceFormat() const;
bool start(const QVideoSurfaceFormat &format, int bytesPerLine);
void stop();
bool isActive();
QGstBufferPoolInterface *pool() { return m_pool; }
QMutex *poolMutex() { return &m_poolMutex; }
void clearPoolBuffers();
GstFlowReturn render(GstBuffer *buffer);
GstBuffer *lastPrerolledBuffer() const { return m_lastPrerolledBuffer; }
void setLastPrerolledBuffer(GstBuffer *lastPrerolledBuffer); // set prerolledBuffer to 0 to discard prerolled buffer
private slots:
void queuedStart();
void queuedStop();
void queuedRender();
void updateSupportedFormats();
private:
QPointer<QAbstractVideoSurface> m_surface;
QList<QVideoFrame::PixelFormat> m_supportedPixelFormats;
//pixel formats of buffers pool native type
QList<QVideoFrame::PixelFormat> m_supportedPoolPixelFormats;
QGstBufferPoolInterface *m_pool;
QList<QGstBufferPoolInterface *> m_pools;
QMutex m_poolMutex;
QMutex m_mutex;
QWaitCondition m_setupCondition;
QWaitCondition m_renderCondition;
QVideoSurfaceFormat m_format;
QVideoFrame m_frame;
GstFlowReturn m_renderReturn;
// this pointer is not 0 when there is a prerolled buffer waiting to be displayed
GstBuffer *m_lastPrerolledBuffer;
int m_bytesPerLine;
bool m_started;
bool m_startCanceled;
};
class QVideoSurfaceGstSink
{
public:
GstVideoSink parent;
static QVideoSurfaceGstSink *createSink(QAbstractVideoSurface *surface);
static QVideoSurfaceFormat formatForCaps(GstCaps *caps,
int *bytesPerLine = 0,
QAbstractVideoBuffer::HandleType handleType = QAbstractVideoBuffer::NoHandle);
static void setFrameTimeStamps(QVideoFrame *frame, GstBuffer *buffer);
static void handleShowPrerollChange(GObject *o, GParamSpec *p, gpointer d);
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;
GstCaps *lastRequestedCaps;
GstCaps *lastBufferCaps;
QVideoSurfaceFormat *lastSurfaceFormat;
};
class QVideoSurfaceGstSinkClass
{
public:
GstVideoSinkClass parent_class;
};
QT_END_NAMESPACE
#endif
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