| 1 | // Copyright (C) 2021 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | #ifndef QFFMPEGSTREAMDECODER_P_H |
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| 4 | #define QFFMPEGSTREAMDECODER_P_H |
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| 5 | |
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| 6 | // |
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| 7 | // W A R N I N G |
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| 8 | // ------------- |
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| 9 | // |
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| 10 | // This file is not part of the Qt API. It exists purely as an |
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| 11 | // implementation detail. This header file may change from version to |
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| 12 | // version without notice, or even be removed. |
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| 13 | // |
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| 14 | // We mean it. |
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| 15 | // |
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| 16 | #include <QtFFmpegMediaPluginImpl/private/qffmpegplaybackengineobject_p.h> |
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| 17 | #include <QtFFmpegMediaPluginImpl/private/qffmpegframe_p.h> |
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| 18 | #include <QtFFmpegMediaPluginImpl/private/qffmpegpacket_p.h> |
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| 19 | #include <QtFFmpegMediaPluginImpl/private/qffmpegplaybackutils_p.h> |
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| 20 | #include <QtMultimedia/private/qplatformmediaplayer_p.h> |
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| 21 | |
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| 22 | #include <QtCore/qqueue.h> |
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| 23 | |
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| 24 | #include <optional> |
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| 25 | |
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| 26 | QT_BEGIN_NAMESPACE |
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| 27 | |
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| 28 | namespace QFFmpeg { |
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| 29 | |
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| 30 | class StreamDecoder : public PlaybackEngineObject |
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| 31 | { |
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| 32 | Q_OBJECT |
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| 33 | public: |
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| 34 | StreamDecoder(const CodecContext &codecContext, TrackPosition absSeekPos); |
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| 35 | |
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| 36 | ~StreamDecoder() override; |
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| 37 | |
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| 38 | QPlatformMediaPlayer::TrackType trackType() const; |
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| 39 | |
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| 40 | // Maximum number of frames that we are allowed to keep in render queue |
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| 41 | static qint32 maxQueueSize(QPlatformMediaPlayer::TrackType type); |
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| 42 | |
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| 43 | public slots: |
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| 44 | |
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| 45 | void decode(Packet); |
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| 46 | |
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| 47 | void onFinalPacketReceived(); |
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| 48 | |
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| 49 | void onFrameProcessed(Frame frame); |
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| 50 | |
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| 51 | signals: |
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| 52 | void requestHandleFrame(Frame frame); |
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| 53 | |
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| 54 | void packetProcessed(Packet); |
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| 55 | |
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| 56 | protected: |
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| 57 | bool canDoNextStep() const override; |
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| 58 | |
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| 59 | void doNextStep() override; |
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| 60 | |
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| 61 | private: |
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| 62 | void decodeMedia(Packet); |
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| 63 | |
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| 64 | void decodeSubtitle(Packet); |
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| 65 | |
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| 66 | void onFrameFound(Frame frame); |
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| 67 | |
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| 68 | int sendAVPacket(Packet); |
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| 69 | |
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| 70 | void receiveAVFrames(bool flushPacket = false); |
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| 71 | |
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| 72 | private: |
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| 73 | CodecContext m_codecContext; |
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| 74 | TrackPosition m_absSeekPos = TrackPosition(0); |
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| 75 | const QPlatformMediaPlayer::TrackType m_trackType; |
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| 76 | |
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| 77 | qint32 m_pendingFramesCount = 0; |
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| 78 | |
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| 79 | LoopOffset m_offset; |
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| 80 | |
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| 81 | QQueue<Packet> m_packets; |
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| 82 | }; |
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| 83 | |
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| 84 | } // namespace QFFmpeg |
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| 85 | |
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| 86 | QT_END_NAMESPACE |
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| 87 | |
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| 88 | #endif // QFFMPEGSTREAMDECODER_P_H |
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| 89 | |
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