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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QVIDEOWINDOW_P_H
#define QVIDEOWINDOW_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QWindow>
#include <QOffscreenSurface>
#include <qtextlayout.h>
#include <rhi/qrhi.h>
#include <qvideoframe.h>
#include <private/qplatformvideosink_p.h>
#include <private/qvideotexturehelper_p.h>
#include <qbackingstore.h>
QT_BEGIN_NAMESPACE
class QVideoWindow;
class QVideoWindowPrivate {
public:
QVideoWindowPrivate(QVideoWindow *q);
~QVideoWindowPrivate();
bool canRender() const { return m_useRhi; }
QRhi *rhi() const { return m_rhi.get(); }
void init();
void render();
void initRhi();
void resizeSwapChain();
void releaseSwapChain();
void updateTextures(QRhiResourceUpdateBatch *rub);
void updateSubtitle(QRhiResourceUpdateBatch *rub, const QSize &frameSize);
void setupGraphicsPipeline(QRhiGraphicsPipeline *pipeline, QRhiShaderResourceBindings *bindings, const QVideoFrameFormat &fmt);
QVideoWindow *q = nullptr;
Qt::AspectRatioMode aspectRatioMode = Qt::KeepAspectRatio;
QBackingStore *backingStore = nullptr;
#if QT_CONFIG(opengl)
std::unique_ptr<QOffscreenSurface> m_fallbackSurface;
#endif
std::unique_ptr<QRhi> m_rhi;
std::unique_ptr<QRhiSwapChain> m_swapChain;
std::unique_ptr<QRhiRenderPassDescriptor> m_renderPass;
std::unique_ptr<QRhiBuffer> m_vertexBuf;
bool m_vertexBufReady = false;
std::unique_ptr<QRhiBuffer> m_uniformBuf;
std::unique_ptr<QVideoFrameTextures> m_frameTextures;
std::unique_ptr<QRhiSampler> m_textureSampler;
std::unique_ptr<QRhiShaderResourceBindings> m_shaderResourceBindings;
std::unique_ptr<QRhiGraphicsPipeline> m_graphicsPipeline;
std::unique_ptr<QRhiTexture> m_subtitleTexture;
std::unique_ptr<QRhiShaderResourceBindings> m_subtitleResourceBindings;
std::unique_ptr<QRhiGraphicsPipeline> m_subtitlePipeline;
std::unique_ptr<QRhiBuffer> m_subtitleUniformBuf;
std::unique_ptr<QVideoSink> m_sink;
QRhi::Implementation m_graphicsApi = QRhi::Null;
QVideoFrame m_currentFrame;
QVideoTextureHelper::SubtitleLayout m_subtitleLayout;
enum { NVideoFrameSlots = 4 };
QVideoFrame m_videoFrameSlots[NVideoFrameSlots];
bool initialized = false;
bool isExposed = false;
bool m_useRhi = true;
bool m_hasSwapChain = false;
bool m_texturesDirty = true;
bool m_subtitleDirty = false;
bool m_hasSubtitle = false;
QVideoFrameFormat format;
};
class Q_MULTIMEDIA_EXPORT QVideoWindow : public QWindow
{
Q_OBJECT
public:
explicit QVideoWindow(QScreen *screen = nullptr);
explicit QVideoWindow(QWindow *parent);
~QVideoWindow();
Q_INVOKABLE QVideoSink *videoSink() const;
Qt::AspectRatioMode aspectRatioMode() const;
public Q_SLOTS:
void setAspectRatioMode(Qt::AspectRatioMode mode);
Q_SIGNALS:
void aspectRatioModeChanged(Qt::AspectRatioMode mode);
protected:
bool event(QEvent *e) override;
void resizeEvent(QResizeEvent *) override;
private Q_SLOTS:
void setVideoFrame(const QVideoFrame &frame);
private:
friend class QVideoWindowPrivate;
std::unique_ptr<QVideoWindowPrivate> d;
};
QT_END_NAMESPACE
#endif
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