Commit bbb655bf authored by Val Doroshchuk's avatar Val Doroshchuk

tmp example

parent 794c0455
/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "streamer.h"
#include <QQuickItemGrabResult>
Streamer::Streamer(QObject *parent)
: QGstreamerPipeline(parent)
{
connect(this, &QGstreamerPipeline::pipelineChanged,
this, &Streamer::onPipelineChanged);
}
QObject *Streamer::item() const
{
return m_item;
}
void Streamer::setItem(QObject *src)
{
if (src == m_item)
return;
m_item = qobject_cast<QQuickItem*>(src);
emit itemChanged();
}
void Streamer::onPipelineChanged()
{
GstElement *pl = pipeline();
if (!pl)
return;
auto appsrc = gst_bin_get_by_name(GST_BIN(pl), "source");
if (!appsrc)
return;
m_appsrc.reset(new AppSrc(this, appsrc));
}
QVideoFrame AppSrc::readFrame() const
{
if (!m_frame.isValid() && m_streamer->item()) {
auto result = qobject_cast<QQuickItem*>(m_streamer->item())->grabToImage();
connect(result.data(), &QQuickItemGrabResult::ready, result.data(), [this, result](){
m_frame = result->image();
});
}
auto frame = m_frame;
m_frame = QVideoFrame();
return frame;
}
/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef STREAMER_H
#define STREAMER_H
#include <QGstreamerPipeline>
#include <QGstreamerAppSrc>
#include <QScopedPointer>
#include <QPointer>
#include <QQuickWindow>
#include <QQuickItem>
class Streamer;
class AppSrc : public QGstreamerAppSrc
{
Q_OBJECT
public:
AppSrc(Streamer *streamer, GstElement *appsrc, QObject *parent = nullptr)
: QGstreamerAppSrc(appsrc, parent)
, m_streamer(streamer)
{
}
protected:
QVideoFrame readFrame() const override;
private:
Streamer *m_streamer = nullptr;
mutable QVideoFrame m_frame;
};
class Streamer : public QGstreamerPipeline
{
Q_OBJECT
Q_PROPERTY(QObject* item READ item WRITE setItem NOTIFY itemChanged)
public:
Streamer(QObject *parent = nullptr);
QObject *item() const;
void setItem(QObject *item);
Q_SIGNALS:
void windowChanged();
void itemChanged();
private Q_SLOTS:
void onPipelineChanged();
private:
QScopedPointer<AppSrc> m_appsrc;
QQuickItem *m_item;
};
#endif
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment