liblbx: Expose image lead-in in public struct.

[liblbx.git] / src / image.c

diff --git a/src/image.c b/src/image.c
index 764f2bedfd1720ea3ac4496232547968112b9370..e0ee129c1dcd3dc3b047ed792be8036dabc086a3 100644 (file)
--- a/src/image.c
+++ b/src/image.c
@@ -1,7 +1,7 @@
 /*
  * 2ooM: The Master of Orion II Reverse Engineering Project
  * Library for working with LBX image files.
- * Copyright © 2006-2011, 2013 Nick Bowler
+ * Copyright © 2006-2011, 2013-2014 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
@@ -43,7 +43,7 @@ struct lbx_image_priv {
        struct lbx_image pub;
 
        unsigned short wtf, flags;
-       unsigned char  wtf2, leadin;
+       unsigned char  wtf2;
        unsigned short palstart, palcount;
 
        const struct lbx_file_ops *fops;
@@ -77,13 +77,19 @@ static struct lbx_image_priv *lbx_img_init(unsigned char hdr[static HDR_LEN])
                .wtf        = unpack_16_le(hdr+4),
                .pub.frames = hdr[6],
                .wtf2       = hdr[7],
-               .leadin     = hdr[8],
+               .pub.leadin = hdr[8],
                .pub.chunk  = hdr[9],
                .flags      = unpack_16_le(hdr+10),
 
                .currentframe = -1,
        };
 
+       if (img->flags & FLAG_OVERWRITE)
+               img->pub.chunk = 1;
+
+       if (img->flags & FLAG_LOOPING)
+               img->pub.leadin = 0;
+
        return img;
 }
 
@@ -115,7 +121,7 @@ struct lbx_image *lbx_img_open(void *f, const struct lbx_file_ops *fops,
         */
        _lbx_assert(img->wtf  == 0); /* version? */
        _lbx_assert(img->wtf2 == 0); /* very likely is simply reserved. */
-       _lbx_assert(img->pub.frames > img->leadin);
+       _lbx_assert(img->pub.frames > img->pub.leadin);
        _lbx_assert(!(img->flags & ~FLAG_ALL));
 
        /* Read all offsets.  Should be merged with identical code in lbx.c */
@@ -490,8 +496,8 @@ void lbx_img_getinfo(struct lbx_image *pub, struct lbx_imginfo *info)
        if (img->flags & FLAG_LOOPING) {
                info->loopstart = 0;
                info->looping   = 1;
-       } else if (img->leadin != pub->frames - 1) {
-               info->loopstart = img->leadin;
+       } else if (img->pub.leadin != pub->frames - 1) {
+               info->loopstart = img->pub.leadin;
                info->looping   = 1;
        }
 }