qgst_play_p.h

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// Copyright (C) 2024 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 QGST_PLAY_P_H
#define QGST_PLAY_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 <QtCore/qglobal.h>
#include <QtCore/qlocale.h>
 
#include <QtMultimedia/private/qmultimediautils_p.h>
 
#include "common/qgst_handle_types_p.h"
 
#include <gst/play/gstplay.h>
 
QT_BEGIN_NAMESPACE
 
namespace QGstPlaySupport {
 
using QUniqueGstPlayMediaInfoHandle =
        QGstImpl::QGObjectHandleHelper<GstPlayMediaInfo>::SharedHandle;
using QUniqueGstPlayAudioInfoHandle =
        QGstImpl::QGObjectHandleHelper<GstPlayAudioInfo>::SharedHandle;
using QUniqueGstPlayVideoInfoHandle =
        QGstImpl::QGObjectHandleHelper<GstPlayVideoInfo>::SharedHandle;
using QUniqueGstPlaySubtitleInfoHandle =
        QGstImpl::QGObjectHandleHelper<GstPlaySubtitleInfo>::SharedHandle;
 
struct VideoInfo
{
    int bitrate{};
    int maxBitrate{};
    QSize size;
    Fraction framerate{};
    Fraction pixelAspectRatio{};
};
 
VideoInfo parseGstPlayVideoInfo(const GstPlayVideoInfo *);
 
struct AudioInfo
{
    int channels{};
    int sampleRate{};
    int bitrate{};
    int maxBitrate{};
    QLocale::Language language{};
};
 
AudioInfo parseGstPlayAudioInfo(const GstPlayAudioInfo *);
 
struct SubtitleInfo
{
    QLocale::Language language{};
};
 
SubtitleInfo parseGstPlaySubtitleInfo(const GstPlaySubtitleInfo *);
 
template <typename T>
constexpr bool isStreamType = std::is_same_v<std::decay_t<T>, GstPlayVideoInfo>
        || std::is_same_v<std::decay_t<T>, GstPlayAudioInfo>
        || std::is_same_v<std::decay_t<T>, GstPlaySubtitleInfo>;
 
int getStreamIndex(const GstPlayStreamInfo *);
 
template <typename T, typename Enabler = std::enable_if_t<isStreamType<T>>>
int getStreamIndex(const T *info)
{
    return getStreamIndex(GST_PLAY_STREAM_INFO(info));
}
 
} // namespace QGstPlaySupport
 
QT_END_NAMESPACE
 
#endif