| 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 | #ifndef QFFMPEGENCODERTHREAD_P_H |
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| 4 | #define QFFMPEGENCODERTHREAD_P_H |
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| 5 | |
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| 6 | // |
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| 7 | // W A R N I N G |
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| 8 | // ------------- |
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| 9 | // |
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| 10 | // This file is not part of the Qt API. It exists purely as an |
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| 11 | // implementation detail. This header file may change from version to |
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| 12 | // version without notice, or even be removed. |
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| 13 | // |
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| 14 | // We mean it. |
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| 15 | // |
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| 16 | |
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| 17 | #include <QtFFmpegMediaPluginImpl/private/qffmpegthread_p.h> |
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| 18 | #include "qpointer.h" |
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| 19 | #include "qsemaphore.h" |
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| 20 | |
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| 21 | #include <QtMultimedia/private/qmediainputencoderinterface_p.h> |
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| 22 | |
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| 23 | QT_BEGIN_NAMESPACE |
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| 24 | |
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| 25 | namespace QFFmpeg { |
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| 26 | |
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| 27 | class RecordingEngine; |
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| 28 | |
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| 29 | class EncoderThread : public ConsumerThread, public QMediaInputEncoderInterface |
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| 30 | { |
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| 31 | Q_OBJECT |
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| 32 | public: |
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| 33 | EncoderThread(RecordingEngine &recordingEngine); |
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| 34 | |
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| 35 | void setPaused(bool paused); |
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| 36 | |
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| 37 | void setAutoStop(bool autoStop); |
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| 38 | |
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| 39 | void setSource(QObject *source) { m_source = source; } |
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| 40 | |
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| 41 | QObject *source() const { return m_source; } |
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| 42 | |
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| 43 | bool canPushFrame() const override { return m_canPushFrame.load(m: std::memory_order_relaxed); } |
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| 44 | |
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| 45 | void setEndOfSourceStream(); |
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| 46 | |
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| 47 | bool isEndOfSourceStream() const { return m_endOfSourceStream; } |
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| 48 | |
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| 49 | void startEncoding(bool noError); |
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| 50 | |
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| 51 | bool isInitialized() const { return m_initialized; } |
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| 52 | |
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| 53 | protected: |
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| 54 | bool init() override; |
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| 55 | |
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| 56 | void updateCanPushFrame(); |
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| 57 | |
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| 58 | virtual bool checkIfCanPushFrame() const = 0; |
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| 59 | |
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| 60 | void resetEndOfSourceStream() { m_endOfSourceStream = false; } |
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| 61 | |
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| 62 | auto lockLoopData() |
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| 63 | { |
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| 64 | return QScopeGuard([this, locker = ConsumerThread::lockLoopData()]() mutable { |
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| 65 | const bool autoStopActivated = m_endOfSourceStream && m_autoStop; |
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| 66 | const bool canPush = !autoStopActivated && !m_paused && checkIfCanPushFrame(); |
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| 67 | locker.unlock(); |
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| 68 | if (m_canPushFrame.exchange(i: canPush, m: std::memory_order_relaxed) != canPush) |
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| 69 | emit canPushFrameChanged(); |
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| 70 | }); |
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| 71 | } |
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| 72 | |
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| 73 | Q_SIGNALS: |
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| 74 | void canPushFrameChanged(); |
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| 75 | void endOfSourceStream(); |
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| 76 | void initialized(); |
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| 77 | |
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| 78 | protected: |
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| 79 | bool m_paused = false; |
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| 80 | bool m_endOfSourceStream = false; |
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| 81 | bool m_autoStop = false; |
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| 82 | bool m_initialized = false; |
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| 83 | bool m_encodingStarted = false; |
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| 84 | std::atomic_bool m_canPushFrame = false; |
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| 85 | RecordingEngine &m_recordingEngine; |
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| 86 | QPointer<QObject> m_source; |
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| 87 | QSemaphore m_encodingStartSemaphore; |
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| 88 | }; |
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| 89 | |
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| 90 | } // namespace QFFmpeg |
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| 91 | |
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| 92 | QT_END_NAMESPACE |
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| 93 | |
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| 94 | #endif |
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| 95 | |
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