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/****************************************************************************
**
** Copyright (C) 2022 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
******************************************************************************/
#ifndef QVIDEOTEXTUREHELPER_H
#define QVIDEOTEXTUREHELPER_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 <qvideoframeformat.h>
#include <private/qrhi_p.h>
#include <QtGui/qtextlayout.h>
QT_BEGIN_NAMESPACE
class QVideoFrame;
class QTextLayout;
namespace QVideoTextureHelper
{
struct TextureDescription
{
static constexpr int maxPlanes = 3;
struct SizeScale {
int x;
int y;
};
using BytesRequired = int(*)(int stride, int height);
inline int strideForWidth(int width) const { return (width*strideFactor + 15) & ~15; }
inline int bytesForSize(QSize s) const { return bytesRequired(strideForWidth(s.width()), s.height()); }
int widthForPlane(int width, int plane) const
{
if (plane > nplanes) return 0;
return (width + sizeScale[plane].x - 1)/sizeScale[plane].x;
}
int heightForPlane(int height, int plane) const
{
if (plane > nplanes) return 0;
return (height + sizeScale[plane].y - 1)/sizeScale[plane].y;
}
int nplanes;
int strideFactor;
BytesRequired bytesRequired;
QRhiTexture::Format textureFormat[maxPlanes];
SizeScale sizeScale[maxPlanes];
};
Q_MULTIMEDIA_EXPORT const TextureDescription *textureDescription(QVideoFrameFormat::PixelFormat format);
Q_MULTIMEDIA_EXPORT QString vertexShaderFileName(QVideoFrameFormat::PixelFormat format);
Q_MULTIMEDIA_EXPORT QString fragmentShaderFileName(QVideoFrameFormat::PixelFormat format);
Q_MULTIMEDIA_EXPORT void updateUniformData(QByteArray *dst, const QVideoFrameFormat &format, const QVideoFrame &frame, const QMatrix4x4 &transform, float opacity);
Q_MULTIMEDIA_EXPORT int updateRhiTextures(QVideoFrame frame, QRhi *rhi,
QRhiResourceUpdateBatch *resourceUpdates, QRhiTexture **textures);
struct Q_MULTIMEDIA_EXPORT SubtitleLayout
{
QSize videoSize;
QRectF bounds;
QTextLayout layout;
bool update(const QSize &frameSize, QString text);
void draw(QPainter *painter, const QPointF &translate) const;
QImage toImage() const;
};
}
QT_END_NAMESPACE
#endif
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