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/*BMPLoader - loads Microsoft .bmp format
Copyright (C) 2006 Chris Backhouse
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; either version 2 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 for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
cjbackhouse@hotmail.com www.backhouse.tk
I would appreciate it if anyone using this in something cool would tell me
so I can see where it ends up.
Takes a filename, returns an array of RGB pixel data
Loads:
24bit bitmaps
256 colour bitmaps
16 colour bitmaps
2 colour bitmaps (Thanks to Charles Rabier)
This code is designed for use in openGL programs, so bitmaps not correctly padded will not
load properly, I believe this only applies to:
256cols if width is not a multiple of 4
16cols if width is not a multiple of 8
2cols if width is not a multiple of 32
Sample code:
BMPClass bmp;
BMPLoad(fname,bmp);
glTexImage2D(GL_TEXTURE_2D,0,3,bmp.width,bmp.height,0,GL_RGB,GL_UNSIGNED_BYTE,bmp.bytes);
*/
#ifndef BMPLOADER_H
#define BMPLOADER_H
#include <string>
typedef unsigned char BYTE;
class BMPClass
{
public:
BMPClass();
~BMPClass();
BYTE& pixel(int x,int y,int c);
void allocateMem();
int width,height;
BYTE* bytes; //OpenGL formatted pixels
};
#define BMPError char
#define BMPNOTABITMAP 'b' //Possible error flags
#define BMPNOOPEN 'o'
#define BMPFILEERROR 'f'
#define BMPBADINT 'i'
#define BMPNOERROR '\0'
#define BMPUNKNOWNFORMAT 'u'
//Loads the bmp in fname, and puts the data in bmp
BMPError BMPLoad(std::string fname,BMPClass& bmp);
//Translates my error codes into English
std::string TranslateBMPError(BMPError err);
//Load and select in OpenGL
BMPError BMPLoadGL(std::string fname);
#endif
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