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
4#ifndef QFFMPEGMEDIADATAHOLDER_P_H
5#define QFFMPEGMEDIADATAHOLDER_P_H
6
7//
8// W A R N I N G
9// -------------
10//
11// This file is not part of the Qt API. It exists purely as an
12// implementation detail. This header file may change from version to
13// version without notice, or even be removed.
14//
15// We mean it.
16//
17
18#include "qmediametadata.h"
19#include "private/qplatformmediaplayer_p.h"
20#include "qffmpeg_p.h"
21#include "qvideoframe.h"
22#include <private/qmultimediautils_p.h>
23
24#include <array>
25#include <optional>
26
27QT_BEGIN_NAMESPACE
28
29namespace QFFmpeg {
30
31struct ICancelToken
32{
33 virtual ~ICancelToken() = default;
34 virtual bool isCancelled() const = 0;
35};
36
37using AVFormatContextUPtr = std::unique_ptr<AVFormatContext, AVDeleter<decltype(&avformat_close_input), &avformat_close_input>>;
38
39class MediaDataHolder
40{
41public:
42 struct StreamInfo
43 {
44 int avStreamIndex = -1;
45 bool isDefault = false;
46 QMediaMetaData metaData;
47 };
48
49 struct ContextError
50 {
51 int code = 0;
52 QString description;
53 };
54
55 using StreamsMap = std::array<QList<StreamInfo>, QPlatformMediaPlayer::NTrackTypes>;
56 using StreamIndexes = std::array<int, QPlatformMediaPlayer::NTrackTypes>;
57
58 MediaDataHolder() = default;
59 MediaDataHolder(AVFormatContextUPtr context, const std::shared_ptr<ICancelToken> &cancelToken);
60
61 static QPlatformMediaPlayer::TrackType trackTypeFromMediaType(int mediaType);
62
63 int activeTrack(QPlatformMediaPlayer::TrackType type) const;
64
65 const QList<StreamInfo> &streamInfo(QPlatformMediaPlayer::TrackType trackType) const;
66
67 qint64 duration() const { return m_duration; }
68
69 const QMediaMetaData &metaData() const { return m_metaData; }
70
71 bool isSeekable() const { return m_isSeekable; }
72
73 VideoTransformation transformation() const;
74
75 AVFormatContext *avContext();
76
77 int currentStreamIndex(QPlatformMediaPlayer::TrackType trackType) const;
78
79 using Maybe = QMaybe<QSharedPointer<MediaDataHolder>, ContextError>;
80 static Maybe create(const QUrl &url, QIODevice *stream,
81 const std::shared_ptr<ICancelToken> &cancelToken);
82
83 bool setActiveTrack(QPlatformMediaPlayer::TrackType type, int streamNumber);
84
85private:
86 void updateMetaData();
87
88 std::shared_ptr<ICancelToken> m_cancelToken; // NOTE: Cancel token may be accessed by
89 // AVFormatContext during destruction and
90 // must outlive the context object
91 AVFormatContextUPtr m_context;
92
93 bool m_isSeekable = false;
94
95 StreamIndexes m_currentAVStreamIndex = { -1, -1, -1 };
96 StreamsMap m_streamMap;
97 StreamIndexes m_requestedStreams = { -1, -1, -1 };
98 qint64 m_duration = 0;
99 QMediaMetaData m_metaData;
100 std::optional<QImage> m_cachedThumbnail;
101};
102
103} // namespace QFFmpeg
104
105QT_END_NAMESPACE
106
107#endif // QFFMPEGMEDIADATAHOLDER_P_H
108

source code of qtmultimedia/src/plugins/multimedia/ffmpeg/playbackengine/qffmpegmediadataholder_p.h