From 06bfa9309d848b41ef1394ebc4311a879f8f4093 Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Fri, 15 May 2015 13:41:19 +0200
Subject: vf_vapoursynth: reject unaligned video sizes

Leads to some nice memory corruption otherwise.
---
 video/filter/vf_vapoursynth.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'video')

diff --git a/video/filter/vf_vapoursynth.c b/video/filter/vf_vapoursynth.c
index 01cacbf742..ff9421df6f 100644
--- a/video/filter/vf_vapoursynth.c
+++ b/video/filter/vf_vapoursynth.c
@@ -673,6 +673,13 @@ static int config(struct vf_instance *vf, int width, int height,
         return 0;
     }
 
+    struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(fmt);
+    if (width % desc.align_x || height % desc.align_y) {
+        MP_FATAL(vf, "VapourSynth does not allow unaligned/cropped video sizes.\n");
+        destroy_vs(vf);
+        return 0;
+    }
+
     vf_rescale_dsize(&d_width, &d_height, width, height, vi->width, vi->height);
 
     return vf_next_config(vf, vi->width, vi->height, d_width, d_height, flags, fmt);
-- 
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