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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QGSTREAMERIMAGECAPTURECONTROL_H
#define QGSTREAMERIMAGECAPTURECONTROL_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 <QtMultimedia/private/qplatformimagecapture_p.h>
#include <QtMultimedia/private/qmultimediautils_p.h>
#include <QtCore/qmutex.h>
#include <QtCore/qqueue.h>
#include <QtConcurrent/QtConcurrentRun>
#include <common/qgst_p.h>
#include <common/qgstreamerbufferprobe_p.h>
#include <mediacapture/qgstreamermediacapture_p.h>
#include <gst/video/video.h>
QT_BEGIN_NAMESPACE
class QGstreamerImageCapture : public QPlatformImageCapture, private QGstreamerBufferProbe
{
Q_OBJECT
public:
static QMaybe<QPlatformImageCapture *> create(QImageCapture *parent);
virtual ~QGstreamerImageCapture();
bool isReadyForCapture() const override;
int capture(const QString &fileName) override;
int captureToBuffer() override;
QImageEncoderSettings imageSettings() const override;
void setImageSettings(const QImageEncoderSettings &settings) override;
bool probeBuffer(GstBuffer *buffer) override;
void setCaptureSession(QPlatformMediaCaptureSession *session);
QGstElement gstElement() const { return bin; }
void setMetaData(const QMediaMetaData &m) override;
public Q_SLOTS:
void cameraActiveChanged(bool active);
void onCameraChanged();
private:
QGstreamerImageCapture(QImageCapture *parent);
void setResolution(const QSize &resolution);
int doCapture(const QString &fileName);
static gboolean saveImageFilter(GstElement *element, GstBuffer *buffer, GstPad *pad,
QGstreamerImageCapture *capture);
void saveBufferToImage(GstBuffer *buffer);
mutable QRecursiveMutex
m_mutex; // guard all elements accessed from probeBuffer/saveBufferToImage
QGstreamerMediaCapture *m_session = nullptr;
int m_lastId = 0;
QImageEncoderSettings m_settings;
struct PendingImage {
int id;
QString filename;
QMediaMetaData metaData;
};
QQueue<PendingImage> pendingImages;
QGstBin bin;
QGstElement queue;
QGstElement filter;
QGstElement videoConvert;
QGstElement encoder;
QGstElement muxer;
QGstElement sink;
QGstPad videoSrcPad;
bool passImage = false;
bool cameraActive = false;
QGObjectHandlerScopedConnection m_handoffConnection;
QMap<int, QFuture<void>> m_pendingFutures;
int futureIDAllocator = 0;
template <typename Functor>
void invokeDeferred(Functor &&fn)
{
QMetaObject::invokeMethod(this, std::forward<decltype(fn)>(fn), Qt::QueuedConnection);
};
};
QT_END_NAMESPACE
#endif // QGSTREAMERCAPTURECORNTROL_H
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