mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-18 14:21:49 -05:00
97 lines
3.4 KiB
C
97 lines
3.4 KiB
C
|
///////////////////////////////////////////////////////////////////////////////////
|
||
|
|
// Copyright (C) 2021 Jon Beniston, M7RCE //
|
||
|
|
// //
|
||
|
|
// 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_PNG_H
|
||
|
|
#define INCLUDE_PNG_H
|
||
|
|
|
||
|
|
#include <QByteArray>
|
||
|
|
#include <QImage>
|
||
|
|
|
||
|
|
#include "export.h"
|
||
|
|
|
||
|
|
#include "util/crc.h"
|
||
|
|
|
||
|
|
// PNG (Portable Network Graphics) utility code
|
||
|
|
// Contains just enough functionality to support assembling APNG files (Animated PNGs)
|
||
|
|
// from multiple PNGs (which can be created using Qt)
|
||
|
|
class SDRBASE_API PNG {
|
||
|
|
public:
|
||
|
|
|
||
|
|
PNG();
|
||
|
|
PNG(QByteArray data);
|
||
|
|
void appendSignature();
|
||
|
|
void appendEnd();
|
||
|
|
void appendChunk(const char *type, QByteArray chunk);
|
||
|
|
void append(QByteArray data);
|
||
|
|
void appendInt(QByteArray& ba, quint32 value);
|
||
|
|
void appendShort(QByteArray& ba, quint16 value);
|
||
|
|
void appendInt(quint32 value);
|
||
|
|
qint32 getInt(int index);
|
||
|
|
qint32 crc(const char *type, const QByteArray data);
|
||
|
|
qint32 typeStringToInt(const char *header);
|
||
|
|
QString intToTypeString(quint32 type);
|
||
|
|
void appendacTL(int frames, quint32 loops=0);
|
||
|
|
void appendfcTL(quint32 seqNo, quint32 width, quint32 height, int fps, quint32 xOffset=0, quint32 yOffset=0);
|
||
|
|
void appendfdAT(quint32 seqNo, const QByteArray& data);
|
||
|
|
QByteArray data();
|
||
|
|
bool checkSignature();
|
||
|
|
int findChunk(const char *type, int startIndex=0);
|
||
|
|
QByteArray getChunk(const char *type);
|
||
|
|
QByteArray getChunks(const char *type);
|
||
|
|
QList<QByteArray> getChunkData(const char *type);
|
||
|
|
quint32 getWidth() const;
|
||
|
|
quint32 getHeight() const;
|
||
|
|
|
||
|
|
private:
|
||
|
|
|
||
|
|
QByteArray m_signature = QByteArrayLiteral("\x89\x50\x4e\x47\x0d\x0a\x1a\x0a");
|
||
|
|
QByteArray m_bytes;
|
||
|
|
crc32 m_crc;
|
||
|
|
quint32 m_width;
|
||
|
|
quint32 m_height;
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
// Animated PNG
|
||
|
|
class SDRBASE_API APNG {
|
||
|
|
|
||
|
|
public:
|
||
|
|
|
||
|
|
APNG(int frames) :
|
||
|
|
m_frames(frames),
|
||
|
|
m_frame(0),
|
||
|
|
m_seqNo(0),
|
||
|
|
m_ended(false)
|
||
|
|
{
|
||
|
|
m_png.appendSignature();
|
||
|
|
}
|
||
|
|
|
||
|
|
bool addImage(const QImage& image, int fps=5);
|
||
|
|
bool save(const QString& fileName);
|
||
|
|
|
||
|
|
private:
|
||
|
|
|
||
|
|
PNG m_png;
|
||
|
|
int m_frames; //!< Total number of frames in animation
|
||
|
|
int m_frame; //!< Current frame number
|
||
|
|
int m_seqNo; //!< Chunk sequence number
|
||
|
|
bool m_ended; //!< IEND chunk has added
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif // INCLUDE_PNG_H
|