wbmp.h File Reference

#include "gwlib/gwlib.h"

Go to the source code of this file.

Data Structures
struct	extparam
struct	wbmp

Macros
#define	NEGATIVE   1 /* source has white=0, black=1 */
#define	REVERSE   2 /* source has righmost as most significant */

Typedefs
typedef struct extparam	ExtParam
typedef struct wbmp	WBMP

Functions
WBMP *	wbmp_create_empty (void)
void	wbmp_delete (WBMP *pic)
WBMP *	wbmp_create (int type, int width, int height, Octet *data, int flags)
int	wbmp_create_stream (WBMP *pic, Octet **stream)

Macro Definition Documentation

NEGATIVE

#define NEGATIVE   1 /* source has white=0, black=1 */

Definition at line 111 of file wbmp.h.

REVERSE

#define REVERSE   2 /* source has righmost as most significant */

Definition at line 112 of file wbmp.h.

Typedef Documentation

ExtParam

typedef struct extparam ExtParam

WBMP

typedef struct wbmp WBMP

Function Documentation

wbmp_create()

WBMP* wbmp_create	(	int	type,
		int	width,
		int	height,
		Octet *	data,
		int	flags
	)

Definition at line 94 of file wbmp.c.

References error(), NEGATIVE, REVERSE, reverse_octet(), type, and wbmp_create_empty().

{
    WBMP *new;
    int i, siz;
    Octet val;
    
    new = wbmp_create_empty();

    new->type_field = type;
    if (type == 0) {
    new->fix_header_field = 0x00;
    } else {
    error(0, "WBMP type %d not supported", type);
    return NULL;
    }
    new->width = width;
    new->height = height;
    siz = (width+7)/8 * height;
    
    new->main_image = gw_malloc(siz);
    for(i=0; i < siz; i++) {
    if (flags & REVERSE) val = reverse_octet(data[i]);
    else val = data[i];
    if (flags & NEGATIVE) val = ~val;
    new->main_image[i] = val;
    }    
    return new;
}

wbmp_create_empty()

WBMP* wbmp_create_empty

(

void

)

Definition at line 69 of file wbmp.c.

Referenced by wbmp_create().

{
    WBMP *new;

    new = gw_malloc(sizeof(WBMP));
    memset(new, 0, sizeof(WBMP));
    return new;
}

wbmp_create_stream()

int wbmp_create_stream	(	WBMP *	pic,
		Octet **	stream
	)

Definition at line 127 of file wbmp.c.

References debug(), error(), wbmp::height, wbmp::main_image, wbmp::type_field, wbmp::width, and write_variable_value().

{
    Octet   tmp_w[30], tmp_h[30];
    int     wl, hl, pic_size;
    
    wl = write_variable_value(pic->width, tmp_w);
    hl = write_variable_value(pic->height, tmp_h);

    pic_size = ((pic->width+7)/8) * pic->height;

    if (pic->type_field != 0) {
    error(0, "Unknown WBMP type %d, cannot convert", pic->type_field);
    return -1;
    }
    *stream = gw_malloc(2+wl+hl+pic_size);
    sprintf(*stream, "%c%c", 0x00, 0x00); 
    memcpy(*stream+2, tmp_w, wl);
    memcpy(*stream+2+wl, tmp_h, hl);
    memcpy(*stream+2+wl+hl, pic->main_image, pic_size);

    debug("util", 0, "picture %d x %d, stream length %d",
      pic->width, pic->height, 2+wl+hl+pic_size);
    
    return (2+wl+hl+pic_size);
}

wbmp_delete()

void wbmp_delete

(

WBMP *

pic

)

Definition at line 80 of file wbmp.c.

References wbmp::animated_image, wbmp::animimg_count, wbmp::ext_header_field, and wbmp::main_image.

{
    gw_free(pic->ext_header_field);
    gw_free(pic->main_image);
    if (pic->animated_image) {
    int i;
    for(i=0; i < pic->animimg_count; i++)
        gw_free(pic->animated_image[i]);
    gw_free(pic->animated_image);
    }
    gw_free(pic);
}