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 QFFMPEGDEMUXER_P_H |
4 | #define QFFMPEGDEMUXER_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 | |
17 | #include <QtFFmpegMediaPluginImpl/private/qffmpegplaybackengineobject_p.h> |
18 | #include <QtFFmpegMediaPluginImpl/private/qffmpegpacket_p.h> |
19 | #include <QtFFmpegMediaPluginImpl/private/qffmpegplaybackutils_p.h> |
20 | #include <QtFFmpegMediaPluginImpl/private/qffmpegtime_p.h> |
21 | #include <QtMultimedia/private/qplatformmediaplayer_p.h> |
22 | |
23 | #include <unordered_map> |
24 | |
25 | QT_BEGIN_NAMESPACE |
26 | |
27 | namespace QFFmpeg { |
28 | |
29 | class Demuxer : public PlaybackEngineObject |
30 | { |
31 | Q_OBJECT |
32 | public: |
33 | Demuxer(AVFormatContext *context, TrackPosition initialPosUs, bool seekPending, |
34 | const LoopOffset &loopOffset, const StreamIndexes &streamIndexes, int loops); |
35 | |
36 | using RequestingSignal = void (Demuxer::*)(Packet); |
37 | static RequestingSignal signalByTrackType(QPlatformMediaPlayer::TrackType trackType); |
38 | |
39 | void setLoops(int loopsCount); |
40 | |
41 | public slots: |
42 | void onPacketProcessed(Packet); |
43 | |
44 | signals: |
45 | void requestProcessAudioPacket(Packet); |
46 | void requestProcessVideoPacket(Packet); |
47 | void requestProcessSubtitlePacket(Packet); |
48 | void firstPacketFound(Id id, TrackPosition absSeekPos); |
49 | void packetsBuffered(); |
50 | |
51 | protected: |
52 | std::chrono::milliseconds timerInterval() const override; |
53 | |
54 | private: |
55 | bool canDoNextStep() const override; |
56 | |
57 | void doNextStep() override; |
58 | |
59 | void ensureSeeked(); |
60 | |
61 | private: |
62 | struct StreamData |
63 | { |
64 | QPlatformMediaPlayer::TrackType trackType = QPlatformMediaPlayer::TrackType::NTrackTypes; |
65 | TrackDuration bufferedDuration = TrackDuration(0); |
66 | qint64 bufferedSize = 0; |
67 | |
68 | TrackPosition maxSentPacketsPos = TrackPosition(0); |
69 | TrackPosition maxProcessedPacketPos = TrackPosition(0); |
70 | |
71 | bool isDataLimitReached = false; |
72 | }; |
73 | |
74 | void updateStreamDataLimitFlag(StreamData &streamData); |
75 | |
76 | private: |
77 | AVFormatContext *m_context = nullptr; |
78 | bool m_seeked = false; |
79 | bool m_firstPacketFound = false; |
80 | std::unordered_map<int, StreamData> m_streams; |
81 | TrackPosition m_posInLoopUs = TrackPosition(0); // Position in current loop in [0, duration()] |
82 | LoopOffset m_loopOffset; |
83 | TrackPosition m_maxPacketsEndPos = TrackPosition(0); |
84 | QAtomicInt m_loops = QMediaPlayer::Once; |
85 | bool m_buffered = false; |
86 | qsizetype m_demuxerRetryCount = 0; |
87 | static constexpr qsizetype s_maxDemuxerRetries = 10; // Arbitrarily chosen |
88 | static constexpr std::chrono::milliseconds s_demuxerRetryInterval = std::chrono::milliseconds(10); |
89 | }; |
90 | |
91 | } // namespace QFFmpeg |
92 | |
93 | QT_END_NAMESPACE // QFFMPEGDEMUXER_P_H |
94 | |
95 | #endif |
96 | |