| 1 | // Copyright (C) 2021 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 QFFMPEGHWACCEL_P_H |
| 4 | #define QFFMPEGHWACCEL_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/qffmpegtextureconverter_p.h> |
| 19 | #include "qvideoframeformat.h" |
| 20 | #include <QtMultimedia/private/qhwvideobuffer_p.h> |
| 21 | #include <QtMultimedia/private/qrhivaluemapper_p.h> |
| 22 | |
| 23 | #include <qshareddata.h> |
| 24 | #include <memory> |
| 25 | #include <functional> |
| 26 | #include <mutex> |
| 27 | |
| 28 | QT_BEGIN_NAMESPACE |
| 29 | |
| 30 | class QRhi; |
| 31 | class QRhiTexture; |
| 32 | class QFFmpegVideoBuffer; |
| 33 | |
| 34 | namespace QFFmpeg { |
| 35 | |
| 36 | // used for the get_format callback for the decoder |
| 37 | AVPixelFormat getFormat(AVCodecContext *s, const AVPixelFormat *fmt); |
| 38 | |
| 39 | class HWAccel; |
| 40 | |
| 41 | class HWAccel; |
| 42 | using HWAccelUPtr = std::unique_ptr<HWAccel>; |
| 43 | |
| 44 | /** |
| 45 | * @brief The HwFrameContextData class contains custom belongings |
| 46 | * of hw frames context. |
| 47 | */ |
| 48 | struct HwFrameContextData |
| 49 | { |
| 50 | QRhiValueMapper<TextureConverter> textureConverterMapper; |
| 51 | |
| 52 | /** |
| 53 | * @brief gets or creates an instance of the class, associated with |
| 54 | * the frames context of the specified frame. Note, AVFrame |
| 55 | * holds shared ownership of the frames context, so consider this |
| 56 | * when designing HwFrameContextData's lifetime. |
| 57 | */ |
| 58 | static HwFrameContextData &ensure(AVFrame &hwFrame); |
| 59 | }; |
| 60 | |
| 61 | class HWAccel |
| 62 | { |
| 63 | AVBufferUPtr m_hwDeviceContext; |
| 64 | AVBufferUPtr m_hwFramesContext; |
| 65 | |
| 66 | mutable std::once_flag m_constraintsOnceFlag; |
| 67 | mutable AVHWFramesConstraintsUPtr m_constraints; |
| 68 | |
| 69 | public: |
| 70 | ~HWAccel(); |
| 71 | |
| 72 | static HWAccelUPtr create(AVHWDeviceType deviceType); |
| 73 | |
| 74 | static std::pair<std::optional<Codec>, HWAccelUPtr> findDecoderWithHwAccel(AVCodecID id); |
| 75 | |
| 76 | AVHWDeviceType deviceType() const; |
| 77 | |
| 78 | AVBufferRef *hwDeviceContextAsBuffer() const { return m_hwDeviceContext.get(); } |
| 79 | AVHWDeviceContext *hwDeviceContext() const; |
| 80 | AVPixelFormat hwFormat() const; |
| 81 | const AVHWFramesConstraints *constraints() const; |
| 82 | |
| 83 | bool matchesSizeContraints(QSize size) const; |
| 84 | |
| 85 | void createFramesContext(AVPixelFormat swFormat, const QSize &size); |
| 86 | AVBufferRef *hwFramesContextAsBuffer() const { return m_hwFramesContext.get(); } |
| 87 | AVHWFramesContext *hwFramesContext() const; |
| 88 | |
| 89 | static AVPixelFormat format(AVFrame *frame); |
| 90 | static const std::vector<AVHWDeviceType> &encodingDeviceTypes(); |
| 91 | |
| 92 | static const std::vector<AVHWDeviceType> &decodingDeviceTypes(); |
| 93 | |
| 94 | private: |
| 95 | HWAccel(AVBufferUPtr hwDeviceContext) : m_hwDeviceContext(std::move(hwDeviceContext)) { } |
| 96 | }; |
| 97 | |
| 98 | AVFrameUPtr copyFromHwPool(AVFrameUPtr frame); |
| 99 | |
| 100 | } // namespace QFFmpeg |
| 101 | |
| 102 | QT_END_NAMESPACE |
| 103 | |
| 104 | #endif |
| 105 |