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/* bitmap.h: definition for a bitmap type. No packing is done by
default; each pixel is represented by an entire byte. Among other
things, this means the type can be used for both grayscale and binary
images. */
#ifndef BITMAP_H
#define BITMAP_H
#include "autotrace.h"
#include <stdio.h>
/* at_ prefix removed version */
typedef at_bitmap_type bitmap_type;
#define BITMAP_PLANES(b) AT_BITMAP_PLANES(b)
#define BITMAP_BITS(b) AT_BITMAP_BITS(b)
#define BITMAP_WIDTH(b) AT_BITMAP_WIDTH(b)
#define BITMAP_HEIGHT(b) AT_BITMAP_HEIGHT(b)
/* This is the pixel at [ROW,COL]. */
#define BITMAP_PIXEL(b, row, col) \
((b).bitmap + ((row) * (b).width + (col)) * (b).np)
#define BITMAP_VALID_PIXEL(b, row, col) \
((row) < (b).height && (col) < (b).width)
/* Allocate storage for the bits, set them all to white, and return an
initialized structure. */
extern bitmap_type new_bitmap (unsigned short width, unsigned short height);
/* Free that storage. */
extern void free_bitmap (bitmap_type *);
at_bitmap_type * at_bitmap_new(unsigned short width,
unsigned short height,
unsigned int planes);
at_bitmap_type * at_bitmap_copy(at_bitmap_type * src);
/* We have to export functions that supports internal datum
access. Such functions might be useful for
at_bitmap_new user. */
unsigned short at_bitmap_get_width (at_bitmap_type * bitmap);
unsigned short at_bitmap_get_height (at_bitmap_type * bitmap);
unsigned short at_bitmap_get_planes (at_bitmap_type * bitmap);
void at_bitmap_free (at_bitmap_type * bitmap);
at_bitmap_type
at_bitmap_init(unsigned char * area,
unsigned short width,
unsigned short height,
unsigned int planes);
#endif /* not BITMAP_H */
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