| 1 | // Copyright (C) 2024 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 QFFMPEGENCODERTHREAD_P_H |
| 4 | #define QFFMPEGENCODERTHREAD_P_H |
| 5 | |
| 6 | #include "qffmpegthread_p.h" |
| 7 | #include "qpointer.h" |
| 8 | #include "qsemaphore.h" |
| 9 | |
| 10 | #include "private/qmediainputencoderinterface_p.h" |
| 11 | |
| 12 | QT_BEGIN_NAMESPACE |
| 13 | |
| 14 | namespace QFFmpeg { |
| 15 | |
| 16 | class RecordingEngine; |
| 17 | |
| 18 | class EncoderThread : public ConsumerThread, public QMediaInputEncoderInterface |
| 19 | { |
| 20 | Q_OBJECT |
| 21 | public: |
| 22 | EncoderThread(RecordingEngine &recordingEngine); |
| 23 | |
| 24 | void setPaused(bool paused); |
| 25 | |
| 26 | void setAutoStop(bool autoStop); |
| 27 | |
| 28 | void setSource(QObject *source) { m_source = source; } |
| 29 | |
| 30 | QObject *source() const { return m_source; } |
| 31 | |
| 32 | bool canPushFrame() const override { return m_canPushFrame.load(m: std::memory_order_relaxed); } |
| 33 | |
| 34 | void setEndOfSourceStream(); |
| 35 | |
| 36 | bool isEndOfSourceStream() const { return m_endOfSourceStream; } |
| 37 | |
| 38 | void startEncoding(bool noError); |
| 39 | |
| 40 | bool isInitialized() const { return m_initialized; } |
| 41 | |
| 42 | protected: |
| 43 | bool init() override; |
| 44 | |
| 45 | void updateCanPushFrame(); |
| 46 | |
| 47 | virtual bool checkIfCanPushFrame() const = 0; |
| 48 | |
| 49 | void resetEndOfSourceStream() { m_endOfSourceStream = false; } |
| 50 | |
| 51 | auto lockLoopData() |
| 52 | { |
| 53 | return QScopeGuard([this, locker = ConsumerThread::lockLoopData()]() mutable { |
| 54 | const bool autoStopActivated = m_endOfSourceStream && m_autoStop; |
| 55 | const bool canPush = !autoStopActivated && !m_paused && checkIfCanPushFrame(); |
| 56 | locker.unlock(); |
| 57 | if (m_canPushFrame.exchange(i: canPush, m: std::memory_order_relaxed) != canPush) |
| 58 | emit canPushFrameChanged(); |
| 59 | }); |
| 60 | } |
| 61 | |
| 62 | Q_SIGNALS: |
| 63 | void canPushFrameChanged(); |
| 64 | void endOfSourceStream(); |
| 65 | void initialized(); |
| 66 | |
| 67 | protected: |
| 68 | bool m_paused = false; |
| 69 | bool m_endOfSourceStream = false; |
| 70 | bool m_autoStop = false; |
| 71 | bool m_initialized = false; |
| 72 | bool m_encodingStarted = false; |
| 73 | std::atomic_bool m_canPushFrame = false; |
| 74 | RecordingEngine &m_recordingEngine; |
| 75 | QPointer<QObject> m_source; |
| 76 | QSemaphore m_encodingStartSemaphore; |
| 77 | }; |
| 78 | |
| 79 | } // namespace QFFmpeg |
| 80 | |
| 81 | QT_END_NAMESPACE |
| 82 | |
| 83 | #endif |
| 84 |