sdrangel/sdrbase/util/fits.h

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///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
// written by Christian Daniel //
// Copyright (C) 2015-2019 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
// Copyright (C) 2021 Jon Beniston, M7RCE <jon@beniston.com> //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#ifndef INCLUDE_UTIL_FITS_H
#define INCLUDE_UTIL_FITS_H
#include <QString>
#include <QByteArray>
#include "export.h"
// Flexible Image Transport System
// Specification: https://fits.gsfc.nasa.gov/standard40/fits_standard40aa-le.pdf
// This just implements the minimum functionality used by the files
// used by the StarTracker plugin
class SDRBASE_API FITS {
bool m_valid;
int m_width; // In pixels
int m_height; // In pixels
int m_bitsPerPixel; // BITPIX=-32 means single precision floating point
int m_bytesPerPixel;
int m_bzero;
double m_bscale;
QString m_buint; // "K TB" "MILLIK TB" "K"
float m_uintScale;
double m_cdelta1; // How many degrees RA per horizontal pixel
double m_cdelta2; // How many degrees Declination per vertical pixel
int m_dataStart;
QByteArray m_data;
public:
FITS(QString resourceName);
float value(int x, int y) const;
float scaledValue(int x, int y) const;
float scaledWrappedValue(int x, int y) const;
double degreesPerPixelH() const { return m_cdelta1; }
double degreesPerPixelV() const { return m_cdelta2; }
int width() const { return m_width; }
int height() const { return m_height; }
bool valid() const { return m_valid; }
protected:
int mod(int a, int b) const;
};
#endif // INCLUDE_UTIL_FITS_H