qt-everywhere-src-5.15.1/qtwebengine/src/core/compositor/yuv_video_node.h

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#ifndef YUV_VIDEO_NODE_H
#define YUV_VIDEO_NODE_H

#include <QtQuick/qsgmaterial.h>
#include <QtQuick/qsgnode.h>

#include "ui/gfx/color_space.h"

QT_FORWARD_DECLARE_CLASS(QSGTexture)

namespace QtWebEngineCore {

// These classes duplicate, QtQuick style, the logic of GLRenderer::DrawYUVVideoQuad.
// Their behavior should stay as close as possible to GLRenderer.

class YUVVideoMaterial : public QSGMaterial
{
public:
    YUVVideoMaterial(QSGTexture *yTexture, QSGTexture *uTexture, QSGTexture *vTexture,
                     const QRectF &yaTexCoordRect, const QRectF &uvTexCoordRect, const QSizeF &yaTexSize, const QSizeF &uvTexSize,
                     const gfx::ColorSpace &colorspace, float rMul, float rOff);

    QSGMaterialType *type() const override
    {
        static QSGMaterialType theType;
        return &theType;
    }

    QSGMaterialShader *createShader() const override;
    int compare(const QSGMaterial *other) const override;

    QSGTexture *m_yTexture;
    QSGTexture *m_uTexture;
    QSGTexture *m_vTexture;
    QRectF m_yaTexCoordRect;
    QRectF m_uvTexCoordRect;
    QSizeF m_yaTexSize;
    QSizeF m_uvTexSize;
    gfx::ColorSpace m_colorSpace;
    float m_resourceMultiplier;
    float m_resourceOffset;
};

class YUVAVideoMaterial : public YUVVideoMaterial
{
public:
    YUVAVideoMaterial(QSGTexture *yTexture, QSGTexture *uTexture, QSGTexture *vTexture, QSGTexture *aTexture,
                      const QRectF &yaTexCoordRect, const QRectF &uvTexCoordRect, const QSizeF &yaTexSize, const QSizeF &uvTexSize,
                      const gfx::ColorSpace &colorspace, float rMul, float rOff);

    QSGMaterialType *type() const override
    {
        static QSGMaterialType theType;
        return &theType;
    }

    QSGMaterialShader *createShader() const override;
    int compare(const QSGMaterial *other) const override;

    QSGTexture *m_aTexture;
};

class YUVVideoNode : public QSGGeometryNode
{
public:
    YUVVideoNode(QSGTexture *yTexture, QSGTexture *uTexture, QSGTexture *vTexture, QSGTexture *aTexture,
                 const QRectF &yaTexCoordRect, const QRectF &uvTexCoordRect, const QSizeF &yaTexSize, const QSizeF &uvTexSize,
                 const gfx::ColorSpace &colorspace, float rMul, float rOff);
    void setRect(const QRectF &rect);

private:
    QSGGeometry m_geometry;
    YUVVideoMaterial *m_material;
};

} // namespace

#endif // YUV_VIDEO_NODE_H