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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** 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 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.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QGSTUTILS_P_H
#define QGSTUTILS_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 <private/qtmultimediaglobal_p.h>
#include <QtCore/qlist.h>
#include <QtCore/qmap.h>
#include <QtCore/qset.h>
#include <gst/gst.h>
#include <gst/video/video.h>
#include <qaudioformat.h>
#include <qcamera.h>
#include <qabstractvideobuffer.h>
#include <qvideoframe.h>
#include <QDebug>
QT_BEGIN_NAMESPACE
class QSize;
class QVariant;
class QByteArray;
class QImage;
class QVideoSurfaceFormat;
namespace QGstUtils {
struct Q_MULTIMEDIA_EXPORT CameraInfo
{
QString name;
QString description;
int orientation;
QCameraInfo::Position position;
QByteArray driver;
};
Q_MULTIMEDIA_EXPORT QMap<QByteArray, QVariant> gstTagListToMap(const GstTagList *list);
Q_MULTIMEDIA_EXPORT QSize capsResolution(const GstCaps *caps);
Q_MULTIMEDIA_EXPORT QSize capsCorrectedResolution(const GstCaps *caps);
Q_MULTIMEDIA_EXPORT QAudioFormat audioFormatForCaps(const GstCaps *caps);
Q_MULTIMEDIA_EXPORT QAudioFormat audioFormatForSample(GstSample *sample);
Q_MULTIMEDIA_EXPORT GstCaps *capsForAudioFormat(const QAudioFormat &format);
Q_MULTIMEDIA_EXPORT void initializeGst();
Q_MULTIMEDIA_EXPORT QMultimedia::SupportEstimate hasSupport(const QString &mimeType,
const QStringList &codecs,
const QSet<QString> &supportedMimeTypeSet);
Q_MULTIMEDIA_EXPORT QSet<QString> supportedMimeTypes(bool (*isValidFactory)(GstElementFactory *factory));
Q_MULTIMEDIA_EXPORT QImage bufferToImage(GstBuffer *buffer, const GstVideoInfo &info);
Q_MULTIMEDIA_EXPORT QVideoSurfaceFormat formatForCaps(
GstCaps *caps,
GstVideoInfo *info = 0,
QAbstractVideoBuffer::HandleType handleType = QAbstractVideoBuffer::NoHandle);
Q_MULTIMEDIA_EXPORT GstCaps *capsForFormats(const QList<QVideoFrame::PixelFormat> &formats);
void setFrameTimeStamps(QVideoFrame *frame, GstBuffer *buffer);
Q_MULTIMEDIA_EXPORT void setMetaData(GstElement *element, const QMap<QByteArray, QVariant> &data);
Q_MULTIMEDIA_EXPORT void setMetaData(GstBin *bin, const QMap<QByteArray, QVariant> &data);
Q_MULTIMEDIA_EXPORT GstCaps *videoFilterCaps();
Q_MULTIMEDIA_EXPORT QString fileExtensionForMimeType(const QString &mimeType);
Q_MULTIMEDIA_EXPORT QVariant fromGStreamerOrientation(const QVariant &value);
Q_MULTIMEDIA_EXPORT QVariant toGStreamerOrientation(const QVariant &value);
Q_MULTIMEDIA_EXPORT bool useOpenGL();
}
template <typename T> struct QGRange
{
T min;
T max;
};
class QGValue
{
public:
QGValue(const GValue *v) : value(v) {}
const GValue *value;
bool isNull() const { return !value; }
std::optional<bool> toBool() const
{
if (!G_VALUE_HOLDS_BOOLEAN(value))
return std::nullopt;
return g_value_get_boolean(value);
}
std::optional<int> toInt() const
{
if (!G_VALUE_HOLDS_INT(value))
return std::nullopt;
return g_value_get_int(value);
}
const char *toString() const
{
return g_value_get_string(value);
}
std::optional<float> getFraction() const
{
if (!GST_VALUE_HOLDS_FRACTION(value))
return std::nullopt;
return (float)gst_value_get_fraction_numerator(value)/(float)gst_value_get_fraction_denominator(value);
}
std::optional<QGRange<float>> getFractionRange() const
{
if (!GST_VALUE_HOLDS_FRACTION_RANGE(value))
return std::nullopt;
QGValue min = gst_value_get_fraction_range_min(value);
QGValue max = gst_value_get_fraction_range_max(value);
return QGRange<float>{ *min.getFraction(), *max.getFraction() };
}
std::optional<QGRange<int>> toIntRange() const
{
if (!GST_VALUE_HOLDS_INT_RANGE(value))
return std::nullopt;
return QGRange<int>{ gst_value_get_int_range_min(value), gst_value_get_int_range_max(value) };
}
Q_MULTIMEDIA_EXPORT QList<QAudioFormat::SampleFormat> getSampleFormats() const;
};
class QGstStructure {
public:
GstStructure *structure;
QGstStructure(GstStructure *s) : structure(s) {}
void free() { gst_structure_free(structure); structure = nullptr; }
bool isNull() const { return !structure; }
QByteArray name() const { return gst_structure_get_name(structure); }
QGValue operator[](const char *name) const { return gst_structure_get_value(structure, name); }
Q_MULTIMEDIA_EXPORT QSize resolution() const;
Q_MULTIMEDIA_EXPORT QVideoFrame::PixelFormat pixelFormat() const;
Q_MULTIMEDIA_EXPORT QSize pixelAspectRatio() const;
Q_MULTIMEDIA_EXPORT QGRange<float> frameRateRange() const;
};
class QGstCaps {
public:
QGstCaps(const GstCaps *c) : caps(c) {}
const GstCaps *caps;
void unref() {
gst_caps_unref(const_cast<GstCaps *>(caps));
caps = nullptr;
}
bool isNull() const { return !caps; }
int size() const { return gst_caps_get_size(caps); }
QGstStructure at(int index) { return gst_caps_get_structure(caps, index); }
};
Q_MULTIMEDIA_EXPORT void qt_gst_object_ref_sink(gpointer object);
Q_MULTIMEDIA_EXPORT GstCaps *qt_gst_pad_get_current_caps(GstPad *pad);
Q_MULTIMEDIA_EXPORT GstCaps *qt_gst_pad_get_caps(GstPad *pad);
Q_MULTIMEDIA_EXPORT GstStructure *qt_gst_structure_new_empty(const char *name);
Q_MULTIMEDIA_EXPORT gboolean qt_gst_element_query_position(GstElement *element, GstFormat format, gint64 *cur);
Q_MULTIMEDIA_EXPORT gboolean qt_gst_element_query_duration(GstElement *element, GstFormat format, gint64 *cur);
Q_MULTIMEDIA_EXPORT GstCaps *qt_gst_caps_normalize(GstCaps *caps);
Q_MULTIMEDIA_EXPORT const gchar *qt_gst_element_get_factory_name(GstElement *element);
Q_MULTIMEDIA_EXPORT gboolean qt_gst_caps_can_intersect(const GstCaps * caps1, const GstCaps * caps2);
Q_MULTIMEDIA_EXPORT GList *qt_gst_video_sinks();
Q_MULTIMEDIA_EXPORT void qt_gst_util_double_to_fraction(gdouble src, gint *dest_n, gint *dest_d);
QPair<int,int> qt_gstRateAsRational(qreal frameRate);
Q_MULTIMEDIA_EXPORT QDebug operator <<(QDebug debug, GstCaps *caps);
QT_END_NAMESPACE
#endif
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