| 1 | // Copyright (C) 2021 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | #ifndef QFFMPEGSTREAMDECODER_P_H |
| 4 | #define QFFMPEGSTREAMDECODER_P_H |
| 5 | |
| 6 | // |
| 7 | // W A R N I N G |
| 8 | // ------------- |
| 9 | // |
| 10 | // This file is not part of the Qt API. It exists purely as an |
| 11 | // implementation detail. This header file may change from version to |
| 12 | // version without notice, or even be removed. |
| 13 | // |
| 14 | // We mean it. |
| 15 | // |
| 16 | #include "playbackengine/qffmpegplaybackengineobject_p.h" |
| 17 | #include "playbackengine/qffmpegframe_p.h" |
| 18 | #include "playbackengine/qffmpegpacket_p.h" |
| 19 | #include "playbackengine/qffmpegpositionwithoffset_p.h" |
| 20 | #include "private/qplatformmediaplayer_p.h" |
| 21 | |
| 22 | #include <optional> |
| 23 | |
| 24 | QT_BEGIN_NAMESPACE |
| 25 | |
| 26 | namespace QFFmpeg { |
| 27 | |
| 28 | class StreamDecoder : public PlaybackEngineObject |
| 29 | { |
| 30 | Q_OBJECT |
| 31 | public: |
| 32 | StreamDecoder(const Codec &codec, qint64 absSeekPos); |
| 33 | |
| 34 | ~StreamDecoder(); |
| 35 | |
| 36 | QPlatformMediaPlayer::TrackType trackType() const; |
| 37 | |
| 38 | // Maximum number of frames that we are allowed to keep in render queue |
| 39 | static qint32 maxQueueSize(QPlatformMediaPlayer::TrackType type); |
| 40 | |
| 41 | public slots: |
| 42 | void setInitialPosition(TimePoint tp, qint64 trackPos); |
| 43 | |
| 44 | void decode(Packet); |
| 45 | |
| 46 | void onFinalPacketReceived(); |
| 47 | |
| 48 | void onFrameProcessed(Frame frame); |
| 49 | |
| 50 | signals: |
| 51 | void requestHandleFrame(Frame frame); |
| 52 | |
| 53 | void packetProcessed(Packet); |
| 54 | |
| 55 | protected: |
| 56 | bool canDoNextStep() const override; |
| 57 | |
| 58 | void doNextStep() override; |
| 59 | |
| 60 | private: |
| 61 | void decodeMedia(Packet); |
| 62 | |
| 63 | void decodeSubtitle(Packet); |
| 64 | |
| 65 | void onFrameFound(Frame frame); |
| 66 | |
| 67 | int sendAVPacket(Packet); |
| 68 | |
| 69 | void receiveAVFrames(bool flushPacket = false); |
| 70 | |
| 71 | private: |
| 72 | Codec m_codec; |
| 73 | qint64 m_absSeekPos = 0; |
| 74 | const QPlatformMediaPlayer::TrackType m_trackType; |
| 75 | |
| 76 | qint32 m_pendingFramesCount = 0; |
| 77 | |
| 78 | LoopOffset m_offset; |
| 79 | |
| 80 | QQueue<Packet> m_packets; |
| 81 | }; |
| 82 | |
| 83 | } // namespace QFFmpeg |
| 84 | |
| 85 | QT_END_NAMESPACE |
| 86 | |
| 87 | #endif // QFFMPEGSTREAMDECODER_P_H |
| 88 |