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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
* Copyright (C) 2011 D. R. Commander. All Rights Reserved.
* Copyright 2009-2014 Pierre Ossman for Cendio AB
*
* This 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; either version 2 of the License, or
* (at your option) any later version.
*
* This software 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
//
// PixelFormat - structure to represent a pixel format. Also has useful
// methods for reading & writing to streams, etc. Conversion to and from
// other formats are also handled by this class. We have three different
// representations that we refer to:
//
// a) Pixels - Unsigned native integers in the format specified by this
// PixelFormat object.
// b) Buffer - Same thing as pixels, but in the appropriate byte stream
// format. This involves endian conversion and padding.
// c) RGB - A byte stream of 8 bit red, green and blue elements, in that
// order.
//
#ifndef __RFB_PIXELFORMAT_H__
#define __RFB_PIXELFORMAT_H__
#include <rfb/Pixel.h>
#include <rfb/ColourMap.h>
namespace rdr { class InStream; class OutStream; }
namespace rfb {
class PixelFormat {
public:
PixelFormat(int b, int d, bool e, bool t,
int rm=0, int gm=0, int bm=0, int rs=0, int gs=0, int bs=0);
PixelFormat();
bool equal(const PixelFormat& other) const;
void read(rdr::InStream* is);
void write(rdr::OutStream* os) const;
bool is888(void) const;
bool isBigEndian(void) const;
bool isLittleEndian(void) const;
inline Pixel pixelFromBuffer(const rdr::U8* buffer) const;
inline void bufferFromPixel(rdr::U8* buffer, Pixel pixel) const;
inline Pixel pixelFromRGB(rdr::U16 red, rdr::U16 green, rdr::U16 blue, ColourMap* cm=0) const;
inline Pixel pixelFromRGB(rdr::U8 red, rdr::U8 green, rdr::U8 blue, ColourMap* cm=0) const;
void bufferFromRGB(rdr::U8 *dst, const rdr::U8* src, int pixels, ColourMap* cm=0) const;
void bufferFromRGB(rdr::U8 *dst, const rdr::U8* src, int w, int stride,
int h, ColourMap* cm=0) const;
void rgbFromPixel(Pixel pix, ColourMap* cm, Colour* rgb) const;
inline void rgbFromPixel(Pixel pix, ColourMap* cm, rdr::U16 *r, rdr::U16 *g, rdr::U16 *b) const;
inline void rgbFromPixel(Pixel pix, ColourMap* cm, rdr::U8 *r, rdr::U8 *g, rdr::U8 *b) const;
void rgbFromBuffer(rdr::U8* dst, const rdr::U8* src, int pixels, ColourMap* cm=0) const;
void rgbFromBuffer(rdr::U8* dst, const rdr::U8* src, int w, int stride,
int h, ColourMap* cm=0) const;
void print(char* str, int len) const;
bool parse(const char* str);
protected:
void updateState(void);
bool isSane(void);
public:
int bpp;
int depth;
bool trueColour;
// FIXME: These should be protected, but we need to fix TransImageGetter first.
public:
bool bigEndian;
int redMax;
int greenMax;
int blueMax;
int redShift;
int greenShift;
int blueShift;
protected:
/* Pre-computed values to keep algorithms simple */
int redBits, greenBits, blueBits;
int maxBits, minBits;
bool endianMismatch;
};
}
#include <rfb/PixelFormat.inl>
#endif
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