| 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 QFFMPEGAUDIOENCODER_P_H |
| 4 | #define QFFMPEGAUDIOENCODER_P_H |
| 5 | |
| 6 | // |
| 7 | // W A R N I N G |
| 8 | // ------------- |
| 9 | // |
| 10 | // This file is not part of the Qt API. It exists purely as an |
| 11 | // implementation detail. This header file may change from version to |
| 12 | // version without notice, or even be removed. |
| 13 | // |
| 14 | // We mean it. |
| 15 | // |
| 16 | |
| 17 | #include <QtFFmpegMediaPluginImpl/private/qffmpeg_p.h> |
| 18 | #include <QtFFmpegMediaPluginImpl/private/qffmpegencoderthread_p.h> |
| 19 | #include <QtMultimedia/private/qplatformmediarecorder_p.h> |
| 20 | #include <qaudiobuffer.h> |
| 21 | #include <queue> |
| 22 | #include <chrono> |
| 23 | |
| 24 | QT_BEGIN_NAMESPACE |
| 25 | |
| 26 | class QMediaEncoderSettings; |
| 27 | |
| 28 | namespace QFFmpeg { |
| 29 | |
| 30 | class AudioEncoder : public EncoderThread |
| 31 | { |
| 32 | public: |
| 33 | AudioEncoder(RecordingEngine &recordingEngine, const QAudioFormat &sourceFormat, |
| 34 | const QMediaEncoderSettings &settings); |
| 35 | |
| 36 | void addBuffer(const QAudioBuffer &buffer); |
| 37 | |
| 38 | protected: |
| 39 | bool checkIfCanPushFrame() const override; |
| 40 | |
| 41 | private: |
| 42 | QAudioBuffer takeBuffer(); |
| 43 | void retrievePackets(); |
| 44 | bool updateResampler(const QAudioFormat &sourceFormat); |
| 45 | |
| 46 | bool init() override; |
| 47 | void cleanup() override; |
| 48 | bool hasData() const override; |
| 49 | void processOne() override; |
| 50 | |
| 51 | void handleAudioData(const uchar *data, int &samplesOffset, int samplesCount); |
| 52 | |
| 53 | void ensurePendingFrame(int availableSamplesCount); |
| 54 | |
| 55 | void writeDataToPendingFrame(const uchar *data, int &samplesOffset, int samplesCount); |
| 56 | |
| 57 | void sendPendingFrameToAVCodec(); |
| 58 | |
| 59 | private: |
| 60 | std::queue<QAudioBuffer> m_audioBufferQueue; |
| 61 | |
| 62 | // Arbitrarily chosen to limit audio queue duration |
| 63 | const std::chrono::microseconds m_maxQueueDuration = std::chrono::seconds(5); |
| 64 | |
| 65 | std::chrono::microseconds m_queueDuration{ 0 }; |
| 66 | |
| 67 | AVStream *m_stream = nullptr; |
| 68 | AVCodecContextUPtr m_codecContext; |
| 69 | QAudioFormat m_sourceFormat; |
| 70 | |
| 71 | SwrContextUPtr m_resampler; |
| 72 | qint64 m_samplesWritten = 0; |
| 73 | QMediaEncoderSettings m_settings; |
| 74 | |
| 75 | AVFrameUPtr m_avFrame; |
| 76 | int m_avFrameSamplesOffset = 0; |
| 77 | std::vector<uint8_t *> m_avFramePlanesData; |
| 78 | }; |
| 79 | |
| 80 | |
| 81 | } // namespace QFFmpeg |
| 82 | |
| 83 | QT_END_NAMESPACE |
| 84 | |
| 85 | #endif |
| 86 |