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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 QGSTREAMERMEDIAPLAYER_P_H
#define QGSTREAMERMEDIAPLAYER_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/qstack.h>
#include <private/qplatformmediaplayer_p.h>
#include <private/qtmultimediaglobal_p.h>
#include <private/qmultimediautils_p.h>
#include <qurl.h>
#include <common/qgst_p.h>
#include <common/qgstpipeline_p.h>
#include <QtCore/qtimer.h>
#include <array>
QT_BEGIN_NAMESPACE
class QNetworkAccessManager;
class QGstreamerMessage;
class QGstAppSource;
class QGstreamerAudioOutput;
class QGstreamerVideoOutput;
class QGstreamerMediaPlayer : public QObject,
public QPlatformMediaPlayer,
public QGstreamerBusMessageFilter,
public QGstreamerSyncMessageFilter
{
public:
static QMaybe<QPlatformMediaPlayer *> create(QMediaPlayer *parent = nullptr);
~QGstreamerMediaPlayer();
qint64 position() const override;
qint64 duration() const override;
float bufferProgress() const override;
QMediaTimeRange availablePlaybackRanges() const override;
qreal playbackRate() const override;
void setPlaybackRate(qreal rate) override;
QUrl media() const override;
const QIODevice *mediaStream() const override;
void setMedia(const QUrl &, QIODevice *) override;
bool streamPlaybackSupported() const override { return true; }
void setAudioOutput(QPlatformAudioOutput *output) override;
QMediaMetaData metaData() const override;
void setVideoSink(QVideoSink *sink) override;
int trackCount(TrackType) override;
QMediaMetaData trackMetaData(TrackType /*type*/, int /*streamNumber*/) override;
int activeTrack(TrackType) override;
void setActiveTrack(TrackType, int /*streamNumber*/) override;
void setPosition(qint64 pos) override;
void play() override;
void pause() override;
void stop() override;
void *nativePipeline() override;
bool processBusMessage(const QGstreamerMessage& message) override;
bool processSyncMessage(const QGstreamerMessage& message) override;
void updatePosition() { positionChanged(position()); }
private:
QGstreamerMediaPlayer(QGstreamerVideoOutput *videoOutput, QGstElement videoInputSelector,
QGstElement audioInputSelector, QGstElement subTitleInputSelector,
QMediaPlayer *parent);
struct TrackSelector
{
TrackSelector(TrackType, QGstElement selector);
QGstPad createInputPad();
void removeInputPad(QGstPad pad);
void removeAllInputPads();
QGstPad inputPad(int index);
int activeInputIndex() const { return isConnected ? tracks.indexOf(activeInputPad()) : -1; }
QGstPad activeInputPad() const
{
return isConnected ? QGstPad{ selector.getObject("active-pad") } : QGstPad{};
}
void setActiveInputPad(QGstPad input) { selector.set("active-pad", input); }
int trackCount() const { return tracks.count(); }
QGstElement selector;
TrackType type;
QList<QGstPad> tracks;
bool isConnected = false;
};
friend class QGstreamerStreamsControl;
void decoderPadAdded(const QGstElement &src, const QGstPad &pad);
void decoderPadRemoved(const QGstElement &src, const QGstPad &pad);
void disconnectDecoderHandlers();
static void uridecodebinElementAddedCallback(GstElement *uridecodebin, GstElement *child,
QGstreamerMediaPlayer *that);
static void sourceSetupCallback(GstElement *uridecodebin, GstElement *source,
QGstreamerMediaPlayer *that);
static void unknownTypeCallback(GstElement *decodebin, GstPad *pad, GstCaps *caps,
QGstreamerMediaPlayer *self);
static void decodebinElementAddedCallback(GstBin *decodebin, GstBin *sub_bin,
GstElement *element, QGstreamerMediaPlayer *self);
static void decodebinElementRemovedCallback(GstBin *decodebin, GstBin *sub_bin,
GstElement *element, QGstreamerMediaPlayer *self);
void parseStreamsAndMetadata();
void connectOutput(TrackSelector &ts);
void removeOutput(TrackSelector &ts);
void removeDynamicPipelineElements();
void removeAllOutputs();
void stopOrEOS(bool eos);
bool canTrackProgress() const { return decodeBinQueues > 0; }
void detectPipelineIsSeekable();
std::array<TrackSelector, NTrackTypes> trackSelectors;
TrackSelector &trackSelector(TrackType type);
QMediaMetaData m_metaData;
int m_bufferProgress = 0;
QUrl m_url;
QIODevice *m_stream = nullptr;
enum class ResourceErrorState : uint8_t {
NoError,
ErrorOccurred,
ErrorReported,
};
bool prerolling = false;
bool m_requiresSeekOnPlay = false;
bool m_initialBufferProgressSent = false;
ResourceErrorState m_resourceErrorState = ResourceErrorState::NoError;
qint64 m_duration = 0;
QTimer positionUpdateTimer;
QGstAppSource *m_appSrc = nullptr;
QGstStructure topology;
// Gst elements
QGstPipeline playerPipeline;
QGstElement src;
QGstElement decoder;
QGstreamerAudioOutput *gstAudioOutput = nullptr;
QGstreamerVideoOutput *gstVideoOutput = nullptr;
// QGstElement streamSynchronizer;
QHash<QByteArray, QGstPad> decoderOutputMap;
// decoder connections
QGObjectHandlerScopedConnection padAdded;
QGObjectHandlerScopedConnection padRemoved;
QGObjectHandlerScopedConnection sourceSetup;
QGObjectHandlerScopedConnection uridecodebinElementAdded;
QGObjectHandlerScopedConnection unknownType;
QGObjectHandlerScopedConnection elementAdded;
QGObjectHandlerScopedConnection elementRemoved;
int decodeBinQueues = 0;
};
QT_END_NAMESPACE
#endif
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