/* gdImageWBMPCtx
* --------------
* Write the image as a wbmp file
* Parameters are:
* image: gd image structure;
* fg: the index of the foreground color. any other value will be
* considered as background and will not be written
* out: the stream where to write
*/
BGD_DECLARE(void) gdImageWBMPCtx(gdImagePtr image, int fg, gdIOCtx *out)
{
int x, y, pos;
Wbmp *wbmp;
/* create the WBMP */
if((wbmp = createwbmp(gdImageSX(image), gdImageSY(image), WBMP_WHITE)) == NULL) {
fprintf(stderr, "Could not create WBMP\n");
return;
}
/* fill up the WBMP structure */
pos = 0;
for(y = 0; y < gdImageSY(image); y++) {
for(x = 0; x < gdImageSX(image); x++) {
if(gdImageGetPixel(image, x, y) == fg) {
wbmp->bitmap[pos] = WBMP_BLACK;
}
pos++;
}
}
/* write the WBMP to a gd file descriptor */
if(writewbmp(wbmp, &gd_putout, out)) {
fprintf(stderr, "Could not save WBMP\n");
}
/* des submitted this bugfix: gdFree the memory. */
freewbmp(wbmp);
}
/* gdImageCreateFromWBMPCtx
** ------------------------
** Create a gdImage from a WBMP file input from an gdIOCtx
*/
BGD_DECLARE(gdImagePtr) gdImageCreateFromWBMPCtx (gdIOCtx * infile)
{
/* FILE *wbmp_file; */
Wbmp *wbmp;
gdImagePtr im = NULL;
int black, white;
int col, row, pos;
if (readwbmp (&gd_getin, infile, &wbmp))
return (NULL);
if (!(im = gdImageCreate (wbmp->width, wbmp->height)))
{
freewbmp (wbmp);
return (NULL);
}
/* create the background color */
white = gdImageColorAllocate (im, 255, 255, 255);
/* create foreground color */
black = gdImageColorAllocate (im, 0, 0, 0);
/* fill in image (in a wbmp 1 = white/ 0 = black) */
pos = 0;
for (row = 0; row < wbmp->height; row++)
{
for (col = 0; col < wbmp->width; col++)
{
if (wbmp->bitmap[pos++] == WBMP_WHITE)
{
gdImageSetPixel (im, col, row, white);
}
else
{
gdImageSetPixel (im, col, row, black);
}
}
}
freewbmp (wbmp);
return (im);
}
/* Main function
* -------------
*/
int main(int argc, char *argv[])
{
FILE *wbmp_file;
Wbmp *wbmp;
wbmp_file = fopen(argv[1], "rb");
if(wbmp_file) {
readwbmp(&getin, wbmp_file, &wbmp);
#ifdef __VIEW
#ifdef __DEBUG
printf("\nVIEWING IMAGE\n");
#endif
printwbmp(wbmp);
#endif
#ifdef __WRITE
#ifdef __DEBUG
printf("\nDUMPING WBMP to STDOUT\n");
#endif
writewbmp(wbmp, &putout, stdout);
#endif
freewbmp(wbmp);
fclose(wbmp_file);
}
}