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#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <magick/api.h>
#include "loader.h"
#include "viewer.h"
extern char *binary;
static int first = 1;
static ExceptionInfo exception;
struct magick_state {
ImageInfo *image_info;
Image *image;
};
static void*
magick_init(FILE *fp, char *filename, int *width, int *height)
{
struct magick_state *h;
/* libmagick wants a filename */
fclose(fp);
if (first) {
/* init library first time */
MagickIncarnate(binary);
GetExceptionInfo(&exception);
first = 0;
}
h = malloc(sizeof(*h));
memset(h,0,sizeof(*h));
h->image_info=CloneImageInfo(NULL);
strcpy(h->image_info->filename,filename);
h->image = ReadImage(h->image_info,&exception);
if (NULL == h->image) {
MagickError(exception.severity,exception.reason,exception.description);
goto oops;
}
*width = h->image->rows;
*height = h->image->columns;
return h;
oops:
if (h->image)
DestroyImage(h->image);
if (h->image_info)
DestroyImageInfo(h->image_info);
free(h);
return NULL;
}
static void
magick_read(unsigned char *dst, int line, void *data)
{
struct magick_state *h = data;
DispatchImage (h->image,0,line,h->image->columns, 1,
"RGB", 0, data);
}
static void
magick_done(void *data)
{
struct magick_state *h = data;
DestroyImageInfo(h->image_info);
DestroyImage(h->image);
free(h);
}
static struct ida_loader magick_loader = {
name: "libmagick",
init: magick_init,
read: magick_read,
done: magick_done,
};
static void __init init_rd(void)
{
load_register(&magick_loader);
}
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