| 1 | // Copyright (C) 2024 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 | |
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| 4 | #ifndef QFFMPEGRECORDINGENGINEUTILS_P_H |
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| 5 | #define QFFMPEGRECORDINGENGINEUTILS_P_H |
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| 6 | |
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| 7 | // |
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| 8 | // W A R N I N G |
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| 9 | // ------------- |
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| 10 | // |
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| 11 | // This file is not part of the Qt API. It exists purely as an |
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| 12 | // implementation detail. This header file may change from version to |
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| 13 | // version without notice, or even be removed. |
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| 14 | // |
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| 15 | // We mean it. |
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| 16 | // |
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| 17 | |
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| 18 | #include "qobject.h" |
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| 19 | #include <queue> |
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| 20 | |
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| 21 | QT_BEGIN_NAMESPACE |
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| 22 | |
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| 23 | class QMediaInputEncoderInterface; |
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| 24 | class QPlatformVideoSource; |
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| 25 | |
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| 26 | namespace QFFmpeg { |
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| 27 | |
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| 28 | constexpr qint64 VideoFrameTimeBase = 1000000; // us in sec |
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| 29 | |
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| 30 | class EncoderThread; |
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| 31 | |
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| 32 | template <typename T> |
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| 33 | T dequeueIfPossible(std::queue<T> &queue) |
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| 34 | { |
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| 35 | if (queue.empty()) |
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| 36 | return T{}; |
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| 37 | |
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| 38 | auto result = std::move(queue.front()); |
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| 39 | queue.pop(); |
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| 40 | return result; |
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| 41 | } |
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| 42 | |
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| 43 | void setEncoderInterface(QObject *source, QMediaInputEncoderInterface *); |
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| 44 | |
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| 45 | void setEncoderUpdateConnection(QObject *source, EncoderThread *encoder); |
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| 46 | |
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| 47 | template <typename Encoder, typename Source> |
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| 48 | void connectEncoderToSource(Encoder *encoder, Source *source) |
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| 49 | { |
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| 50 | Q_ASSERT(!encoder->source()); |
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| 51 | encoder->setSource(source); |
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| 52 | |
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| 53 | if constexpr (std::is_same_v<Source, QPlatformVideoSource>) { |
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| 54 | QObject::connect(source, &Source::newVideoFrame, encoder, &Encoder::addFrame, |
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| 55 | Qt::DirectConnection); |
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| 56 | |
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| 57 | QObject::connect(source, &Source::activeChanged, encoder, [=]() { |
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| 58 | if (!source->isActive()) |
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| 59 | encoder->setEndOfSourceStream(); |
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| 60 | }); |
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| 61 | } else { |
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| 62 | QObject::connect(source, &Source::newAudioBuffer, encoder, &Encoder::addBuffer, |
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| 63 | Qt::DirectConnection); |
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| 64 | } |
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| 65 | |
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| 66 | // TODO: |
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| 67 | // QObject::connect(source, &Source::disconnectedFromSession, encoder, [=]() { |
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| 68 | // encoder->setSourceEndOfStream(); |
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| 69 | // }); |
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| 70 | |
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| 71 | setEncoderUpdateConnection(source, encoder); |
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| 72 | setEncoderInterface(source, encoder); |
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| 73 | } |
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| 74 | |
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| 75 | void disconnectEncoderFromSource(EncoderThread *encoder); |
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| 76 | |
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| 77 | } // namespace QFFmpeg |
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| 78 | |
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| 79 | QT_END_NAMESPACE |
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| 80 | |
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| 81 | #endif // QFFMPEGRECORDINGENGINEUTILS_P_H |
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| 82 | |
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