| 1 | // Copyright (C) 2022 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 QFFMPEGRESAMPLER_P_H |
|---|
| 4 | #define QFFMPEGRESAMPLER_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 "qaudiobuffer.h" |
|---|
| 18 | #include <QtFFmpegMediaPluginImpl/private/qffmpeg_p.h> |
|---|
| 19 | #include <QtMultimedia/private/qplatformaudioresampler_p.h> |
|---|
| 20 | |
|---|
| 21 | QT_BEGIN_NAMESPACE |
|---|
| 22 | |
|---|
| 23 | namespace QFFmpeg |
|---|
| 24 | { |
|---|
| 25 | class CodecContext; |
|---|
| 26 | } // namespace QFFmpeg |
|---|
| 27 | |
|---|
| 28 | class QFFmpegResampler : public QPlatformAudioResampler |
|---|
| 29 | { |
|---|
| 30 | QFFmpegResampler(const QAudioFormat &inputFormat, const QAudioFormat &outputFormat, |
|---|
| 31 | qint64 startTime); |
|---|
| 32 | QFFmpegResampler(const QFFmpeg::CodecContext *codecContext, const QAudioFormat &outputFormat, |
|---|
| 33 | qint64 startTime); |
|---|
| 34 | |
|---|
| 35 | template <typename... Args> |
|---|
| 36 | static std::unique_ptr<QFFmpegResampler> createImpl(Args...); |
|---|
| 37 | |
|---|
| 38 | public: |
|---|
| 39 | static std::unique_ptr<QFFmpegResampler> createFromInputFormat(const QAudioFormat &input, |
|---|
| 40 | const QAudioFormat &output, |
|---|
| 41 | qint64 startTime = 0); |
|---|
| 42 | static std::unique_ptr<QFFmpegResampler> createFromCodecContext(const QFFmpeg::CodecContext *, |
|---|
| 43 | const QAudioFormat &output, |
|---|
| 44 | qint64 startTime = 0); |
|---|
| 45 | |
|---|
| 46 | ~QFFmpegResampler() override; |
|---|
| 47 | |
|---|
| 48 | bool isInitialized() const; |
|---|
| 49 | |
|---|
| 50 | QAudioBuffer resample(const char *data, size_t size) override; |
|---|
| 51 | |
|---|
| 52 | QAudioBuffer resample(const AVFrame *frame); |
|---|
| 53 | |
|---|
| 54 | qint64 samplesProcessed() const { return m_samplesProcessed; } |
|---|
| 55 | void setSampleCompensation(qint32 delta, quint32 distance); |
|---|
| 56 | qint32 activeSampleCompensationDelta() const; |
|---|
| 57 | |
|---|
| 58 | private: |
|---|
| 59 | int adjustMaxOutSamples(int inputSamplesCount); |
|---|
| 60 | |
|---|
| 61 | QAudioBuffer resample(const uint8_t **inputData, int inputSamplesCount); |
|---|
| 62 | |
|---|
| 63 | private: |
|---|
| 64 | QAudioFormat m_inputFormat; |
|---|
| 65 | QAudioFormat m_outputFormat; |
|---|
| 66 | qint64 m_startTime = 0; |
|---|
| 67 | QFFmpeg::SwrContextUPtr m_resampler; |
|---|
| 68 | qint64 m_samplesProcessed = 0; |
|---|
| 69 | qint64 m_endCompensationSample = std::numeric_limits<qint64>::min(); |
|---|
| 70 | qint32 m_sampleCompensationDelta = 0; |
|---|
| 71 | }; |
|---|
| 72 | |
|---|
| 73 | QT_END_NAMESPACE |
|---|
| 74 | |
|---|
| 75 | #endif |
|---|
| 76 | |
|---|
