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/*
render/image.h
This file is part of the Osirion project and is distributed under
the terms of the GNU General Public License version 2
*/
#ifndef __INCLUDED_RENDER_IMAGE_H__
#define __INCLUDED_RENDER_IMAGE_H__
#include <string>
namespace render {
/// RGB (24bpp) or RGBA (32bpp) image data
class Image {
public:
Image(unsigned int width, unsigned int height, unsigned int channels);
~Image();
/// pointer to the raw image data
inline unsigned char *data() { return image_data; }
/// index into the raw image data
inline unsigned char *operator[](size_t index) { return &image_data[index]; }
/// width of the image in pixels
inline unsigned int width() const { return image_width; }
/// height of the image in pixels
inline unsigned int height() const { return image_height; }
/// size of the image data in bytes
inline size_t size() const { return ((size_t) image_width * (size_t) image_height * (size_t) image_channels); }
/// number of channels 3 (RGB) or 4 (RGBA)
inline unsigned int channels() const { return image_channels; }
/// bits per pixel
inline unsigned int bpp() const { return (image_channels * 8); }
/// set image data to zero
void clear();
/// swap the red and blue channel values of the image
void swap_channels();
/// flip upside-down
void flip();
/// pad width and height up to 8 bytes
void pad();
private:
unsigned char *image_data;
unsigned int image_width;
unsigned int image_height;
unsigned int image_channels;
};
}
#endif // __INCLUDED_RENDER_IMAGE_H__
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