small adjustments

[swftools.git] / src / swfrender.c

diff --git a/src/swfrender.c b/src/swfrender.c
index bace6aa..8ac81d5 100644 (file)
--- a/src/swfrender.c
+++ b/src/swfrender.c
@@ -135,6 +135,7 @@ int main(int argn, char*argv[])
            fprintf(stderr,"%s is not a valid SWF file or contains errors.\n",argv[1]);
            close(fi);
        }
+       assert(swf.movieSize.xmax > swf.movieSize.xmin && swf.movieSize.ymax > swf.movieSize.ymin);
        RENDERBUF buf;
        swf_Render_Init(&buf, 0,0, (swf.movieSize.xmax - swf.movieSize.xmin) / 20,
                                   (swf.movieSize.ymax - swf.movieSize.ymin) / 20, 2, 1);