+/* 2ooM: The Master of Orion II Reverse Engineering Project
+ * Library for working with LBX image files.
+ * Copyright (C) 2006-2008 Nick Bowler
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
int currentframe;
int currentx, currenty;
unsigned char **framedata;
+ unsigned char **mask;
uint32_t offsets[];
};
size_t rc;
assert(img->framedata);
+ assert(img->mask);
if (fread(&type, sizeof type, 1, img->f) != 1) goto readerr;
type = letohs(type); img->foff += sizeof type;
return -1;
}
+ memset(&img->mask[img->currenty][img->currentx], 1, count);
+
pos = &img->framedata[img->currenty][img->currentx];
rc = fread(pos, 1, count, img->f);
img->currentx += rc;
return -1;
}
+static unsigned char **allocframebuffer(size_t width, size_t height)
+{
+ unsigned char **new, *tmp;
+ size_t i;
+
+ tmp = calloc(height, width);
+ if (!tmp) {
+ lbx_errno = -errno;
+ return NULL;
+ }
+
+ new = malloc(height * sizeof *new);
+ if (!new) {
+ lbx_errno = -errno;
+ free(tmp);
+ return NULL;
+ }
+
+ for (i = 0; i < height; i++) {
+ new[i] = tmp + i * width;
+ }
+
+ return new;
+}
+
unsigned char **lbximg_getframe(struct lbx_image *img, int frame)
{
if (frame >= img->frames || frame < 0) {
}
if (!img->framedata) {
- unsigned char *tmp;
- int i;
-
- tmp = malloc(img->width * img->height);
- if (!tmp) {
- lbx_errno = -errno;
+ img->framedata = allocframebuffer(img->width, img->height);
+ if (!img->framedata)
return NULL;
- }
+ }
- img->framedata = malloc(img->height * sizeof *img->framedata);
- if (!img->framedata) {
- lbx_errno = -errno;
- free(tmp);
+ if (!img->mask) {
+ img->mask = allocframebuffer(img->width, img->height);
+ if (!img->mask)
return NULL;
- }
-
- for (i = 0; i < img->height; i++) {
- img->framedata[i] = tmp + i * img->width;
- }
}
/* Start over if we are backtracking. */
if (img->flags & FLAG_OVERWRITE) {
/* Clear the slate. */
memset(img->framedata[0], 0, img->width * img->height);
+ memset(img->mask[0], 0, img->width * img->height);
} else {
/* We must have previous frame decoded to continue. */
if (frame > img->currentframe + 1) {
}
}
+unsigned char **lbximg_getmask(struct lbx_image *img)
+{
+ return img->mask;
+}
+
void lbximg_close(struct lbx_image *img)
{
if (!img) return;
free(img->framedata);
}
+ if (img->mask) {
+ free(img->mask[0]);
+ free(img->mask);
+ }
+
if (img->f) {
fclose(img->f);
}