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// Copyright (C) 2022 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 QQNXCAMERAHANDLE_P_H
#define QQNXCAMERAHANDLE_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 <camera/camera_api.h>
#include <utility>
class QQnxCameraHandle
{
public:
QQnxCameraHandle() = default;
explicit QQnxCameraHandle(camera_handle_t h)
: m_handle (h) {}
explicit QQnxCameraHandle(QQnxCameraHandle &&other)
: m_handle(other.m_handle)
, m_lastError(other.m_lastError)
{
other = QQnxCameraHandle();
}
QQnxCameraHandle(const QQnxCameraHandle&) = delete;
QQnxCameraHandle& operator=(QQnxCameraHandle&& other)
{
m_handle = other.m_handle;
m_lastError = other.m_lastError;
other = QQnxCameraHandle();
return *this;
}
~QQnxCameraHandle()
{
close();
}
bool open(camera_unit_t unit, uint32_t mode)
{
if (isOpen()) {
m_lastError = CAMERA_EALREADY;
return false;
}
return cacheError(camera_open, unit, mode, &m_handle);
}
bool close()
{
if (!isOpen())
return true;
const bool success = cacheError(camera_close, m_handle);
m_handle = CAMERA_HANDLE_INVALID;
return success;
}
camera_handle_t get() const
{
return m_handle;
}
bool isOpen() const
{
return m_handle != CAMERA_HANDLE_INVALID;
}
camera_error_t lastError() const
{
return m_lastError;
}
private:
template <typename Func, typename ...Args>
bool cacheError(Func f, Args &&...args)
{
m_lastError = f(std::forward<Args>(args)...);
return m_lastError == CAMERA_EOK;
}
camera_handle_t m_handle = CAMERA_HANDLE_INVALID;
camera_error_t m_lastError = CAMERA_EOK;
};
#endif
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