qlibcamera_format_support_p.h

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// Copyright (C) 2026 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 QLIBCAMERA_FORMAT_SUPPORT_P_H
#define QLIBCAMERA_FORMAT_SUPPORT_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 <QtMultimedia/qvideoframeformat.h>
#include <QtCore/qsize.h>
 
#include <optional>
#include <utility>
#include <vector>
 
namespace libcamera {
class ColorSpace;
class ControlInfoMap;
class PixelFormat;
class Size;
class StreamFormats;
} // namespace libcamera
 
QT_BEGIN_NAMESPACE
 
namespace QLibCamera {
 
namespace QLibCameraFormatSupport {
 
std::optional<QVideoFrameFormat::PixelFormat>
pixelFormatFromLibcamera(const libcamera::PixelFormat &);
 
std::pair<QVideoFrameFormat::ColorSpace, QVideoFrameFormat::ColorRange>
colorSpaceFromLibcamera(const std::optional<libcamera::ColorSpace> &);
 
// Extracts a [minFrameRate, maxFrameRate] pair from controls::FrameDurationLimits. Not every pipeline
// handler advertises this pre-acquire(), so this returns a generic 1-30 fps fallback range rather than failing
std::pair<float, float> frameRateRangeFromControls(const libcamera::ControlInfoMap &);
 
std::vector<QSize> sizesForPixelFormat(const libcamera::StreamFormats &,
                                       const libcamera::PixelFormat &);
 
QSize toQSize(const libcamera::Size &);
libcamera::Size toSize(const QSize &);
 
} // namespace QLibCameraFormatSupport
 
} // namespace QLibCamera
 
QT_END_NAMESPACE
 
#endif // QLIBCAMERA_FORMAT_SUPPORT_P_H