gzdoom-gles/src/textures/bitmap.h

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/*
** bitmap.h
**
**---------------------------------------------------------------------------
** Copyright 2008 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
**
*/
#ifndef __BITMAP_H__
#define __BITMAP_H__
#include "doomtype.h"
class FBitmap
{
BYTE *data;
int Width;
int Height;
int Pitch;
bool FreeBuffer;
public:
FBitmap()
{
data = NULL;
Width = Height = 0;
Pitch = 0;
FreeBuffer = false;
}
FBitmap(BYTE *buffer, int pitch, int width, int height)
{
data = buffer;
Pitch = pitch;
Width = width;
Height = height;
FreeBuffer = false;
}
~FBitmap()
{
Destroy();
}
void Destroy()
{
if (data != NULL && FreeBuffer) delete [] data;
data = NULL;
FreeBuffer = false;
}
bool Create (int w, int h)
{
Pitch = w*4;
Width = w;
Height = h;
data = new BYTE[4*w*h];
FreeBuffer = true;
return data != NULL;
}
virtual void CopyPixelDataRGB(int originx, int originy, const BYTE *patch, int srcwidth,
int srcheight, int step_x, int step_y, int rotate, int ct);
virtual void CopyPixelData(int originx, int originy, const BYTE * patch, int srcwidth, int srcheight,
int step_x, int step_y, int rotate, PalEntry * palette);
};
bool ClipCopyPixelRect(int texwidth, int texheight, int &originx, int &originy,
const BYTE *&patch, int &srcwidth, int &srcheight,
int &step_x, int &step_y, int rotate);
//===========================================================================
//
// True color conversion classes for the different pixel formats
// used by the supported texture formats
//
//===========================================================================
struct cRGB
{
static unsigned char R(const unsigned char * p) { return p[0]; }
static unsigned char G(const unsigned char * p) { return p[1]; }
static unsigned char B(const unsigned char * p) { return p[2]; }
static unsigned char A(const unsigned char * p) { return 255; }
static int Gray(const unsigned char * p) { return (p[0]*77 + p[1]*143 + p[2]*36)>>8; }
};
struct cRGBA
{
static unsigned char R(const unsigned char * p) { return p[0]; }
static unsigned char G(const unsigned char * p) { return p[1]; }
static unsigned char B(const unsigned char * p) { return p[2]; }
static unsigned char A(const unsigned char * p) { return p[3]; }
static int Gray(const unsigned char * p) { return (p[0]*77 + p[1]*143 + p[2]*36)>>8; }
};
struct cIA
{
static unsigned char R(const unsigned char * p) { return p[0]; }
static unsigned char G(const unsigned char * p) { return p[0]; }
static unsigned char B(const unsigned char * p) { return p[0]; }
static unsigned char A(const unsigned char * p) { return p[1]; }
static int Gray(const unsigned char * p) { return p[0]; }
};
struct cCMYK
{
static unsigned char R(const unsigned char * p) { return p[3] - (((256-p[0])*p[3]) >> 8); }
static unsigned char G(const unsigned char * p) { return p[3] - (((256-p[1])*p[3]) >> 8); }
static unsigned char B(const unsigned char * p) { return p[3] - (((256-p[2])*p[3]) >> 8); }
static unsigned char A(const unsigned char * p) { return 255; }
static int Gray(const unsigned char * p) { return (R(p)*77 + G(p)*143 + B(p)*36)>>8; }
};
struct cBGR
{
static unsigned char R(const unsigned char * p) { return p[2]; }
static unsigned char G(const unsigned char * p) { return p[1]; }
static unsigned char B(const unsigned char * p) { return p[0]; }
static unsigned char A(const unsigned char * p) { return 255; }
static int Gray(const unsigned char * p) { return (p[2]*77 + p[1]*143 + p[0]*36)>>8; }
};
struct cBGRA
{
static unsigned char R(const unsigned char * p) { return p[2]; }
static unsigned char G(const unsigned char * p) { return p[1]; }
static unsigned char B(const unsigned char * p) { return p[0]; }
static unsigned char A(const unsigned char * p) { return p[3]; }
static int Gray(const unsigned char * p) { return (p[2]*77 + p[1]*143 + p[0]*36)>>8; }
};
struct cI16
{
static unsigned char R(const unsigned char * p) { return p[1]; }
static unsigned char G(const unsigned char * p) { return p[1]; }
static unsigned char B(const unsigned char * p) { return p[1]; }
static unsigned char A(const unsigned char * p) { return 255; }
static int Gray(const unsigned char * p) { return p[1]; }
};
struct cRGB555
{
static unsigned char R(const unsigned char * p) { return (((*(WORD*)p)&0x1f)<<3); }
static unsigned char G(const unsigned char * p) { return (((*(WORD*)p)&0x3e0)>>2); }
static unsigned char B(const unsigned char * p) { return (((*(WORD*)p)&0x7c00)>>7); }
static unsigned char A(const unsigned char * p) { return p[1]; }
static int Gray(const unsigned char * p) { return (R(p)*77 + G(p)*143 + B(p)*36)>>8; }
};
struct cPalEntry
{
static unsigned char R(const unsigned char * p) { return ((PalEntry*)p)->r; }
static unsigned char G(const unsigned char * p) { return ((PalEntry*)p)->g; }
static unsigned char B(const unsigned char * p) { return ((PalEntry*)p)->b; }
static unsigned char A(const unsigned char * p) { return ((PalEntry*)p)->a; }
static int Gray(const unsigned char * p) { return (R(p)*77 + G(p)*143 + B(p)*36)>>8; }
};
enum ColorType
{
CF_RGB,
CF_RGBA,
CF_IA,
CF_CMYK,
CF_BGR,
CF_BGRA,
CF_I16,
CF_RGB555,
CF_PalEntry
};
#endif