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 QFFMPEGCODECCONTEXT_P_H
5#define QFFMPEGCODECCONTEXT_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 <QtFFmpegMediaPluginImpl/private/qffmpeg_p.h>
19#include <QtFFmpegMediaPluginImpl/private/qffmpeghwaccel_p.h>
20#include <QtFFmpegMediaPluginImpl/private/qffmpegtime_p.h>
21
22#include <QtMultimedia/private/qmaybe_p.h>
23#include <QtCore/qshareddata.h>
24
25QT_BEGIN_NAMESPACE
26
27namespace QFFmpeg {
28
29class CodecContext
30{
31 struct Data : QSharedData
32 {
33 Data(AVCodecContextUPtr context, AVStream *avStream, AVFormatContext *formatContext,
34 std::unique_ptr<QFFmpeg::HWAccel> hwAccel);
35 AVCodecContextUPtr context;
36 AVStream *stream = nullptr;
37 AVFormatContext *formatContext = nullptr;
38 AVRational pixelAspectRatio = { .num: 0, .den: 1 };
39 std::unique_ptr<QFFmpeg::HWAccel> hwAccel;
40 };
41
42public:
43 static QMaybe<CodecContext> create(AVStream *stream, AVFormatContext *formatContext);
44
45 AVRational pixelAspectRatio(AVFrame *frame) const;
46
47 AVCodecContext *context() const { return d->context.get(); }
48 AVStream *stream() const { return d->stream; }
49 uint streamIndex() const { return d->stream->index; }
50 HWAccel *hwAccel() const { return d->hwAccel.get(); }
51 TrackDuration toTrackDuration(AVStreamDuration duration) const
52 {
53 return QFFmpeg::toTrackDuration(streamDuration: duration, avStream: d->stream);
54 }
55
56 TrackPosition toTrackPosition(AVStreamPosition streamPosition) const
57 {
58 return QFFmpeg::toTrackPosition(streamPosition, avStream: d->stream, formatContext: d->formatContext);
59 }
60
61private:
62 enum VideoCodecCreationPolicy {
63 Hw,
64 Sw,
65 };
66
67 static QMaybe<CodecContext> create(AVStream *stream, AVFormatContext *formatContext,
68 VideoCodecCreationPolicy videoCodecPolicy);
69 CodecContext(Data *data) : d(data) { }
70 QExplicitlySharedDataPointer<Data> d;
71};
72
73} // namespace QFFmpeg
74
75QT_END_NAMESPACE
76
77#endif // QFFMPEGCODECCONTEXT_P_H
78

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