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++ // Copyright (C) 2021 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 QFFMPEGSTREAMDECODER_P_H
++ #define QFFMPEGSTREAMDECODER_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 <QtFFmpegMediaPluginImpl/private/qffmpeg_p.h>
++ #include <QtFFmpegMediaPluginImpl/private/qffmpegplaybackengineobject_p.h>
++ #include <QtFFmpegMediaPluginImpl/private/qffmpegframe_p.h>
++ #include <QtFFmpegMediaPluginImpl/private/qffmpegpacket_p.h>
++ #include <QtFFmpegMediaPluginImpl/private/qffmpegplaybackutils_p.h>
++ #include <QtMultimedia/private/qplatformmediaplayer_p.h>
++
++ #include <QtCore/qqueue.h>
++
++ QT_BEGIN_NAMESPACE
++
++ namespace QFFmpeg {
++
++ class StreamDecoder : public PlaybackEngineObject
++ {
++ Q_OBJECT
++ public:
++ using TrackType = QPlatformMediaPlayer::TrackType;
++
++ StreamDecoder(const PlaybackEngineObjectID &id, const CodecContext &codecContext,
++ TrackPosition absSeekPos);
++
++ ~StreamDecoder() override;
++
++ void seek(quint64 sessionID, TrackPosition pos, const LoopOffset &offset);
++
++ TrackType trackType() const;
++
++ // Maximum number of frames that we are allowed to keep in render queue
++ static qint32 maxQueueSize(TrackType type);
++
++ public Q_SLOTS:
++
++ void decode(Packet);
++
++ void onFinalPacketReceived(PlaybackEngineObjectID sourceID);
++
++ void onFrameProcessed(const Frame &frame);
++
++ Q_SIGNALS:
++ void requestHandleFrame(Frame frame);
++
++ void packetProcessed(Packet);
++
++ protected:
++ bool canDoNextStep() const override;
++
++ void doNextStep() override;
++
++ private:
++ void decodeMedia(const Packet &packet);
++
++ void decodeSubtitle(const Packet &packet);
++
++ void onFrameFound(const Frame &frame);
++
++ int sendAVPacket(const Packet &packet);
++
++ void receiveAVFrames(bool flushPacket = false);
++
++ private:
++ CodecContext m_codecContext;
++
++ const TrackType m_trackType;
++
++ struct SessionContext
++ {
++ TrackPosition absSeekPos = TrackPosition(0);
++ qint32 pendingFramesCount = 0;
++ LoopOffset offset = {};
++ QQueue<Packet> packets = {};
++ };
++
++ SessionContext m_sessionCtx;
++ };
++
++ QString subtitleTextFromAVSubtitle(const AVSubtitle &subtitle);
++
++ } // namespace QFFmpeg
++
++ QT_END_NAMESPACE
++
++ #endif // QFFMPEGSTREAMDECODER_P_H