d3d11_fmt: detect bogus pitch

Fixes #19162 Signed-off-by: Jean-Baptiste Kempf <[email protected]>
elliotzlin · Nov 28, 2017 · 676e46d · 676e46d
1 parent 870264f
commit 676e46d
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/modules/video_chroma/d3d11_fmt.c b/modules/video_chroma/d3d11_fmt.c
@@ -412,6 +412,14 @@ int AllocateTextures( vlc_object_t *obj, d3d11_device_t *d3d_dev,
                      p_chroma_desc->pixel_size * texDesc.Width );
             goto error;
         }
+        if ( mappedResource.RowPitch >=
+             2* (fmt->i_width * p_chroma_desc->p[0].w.num / p_chroma_desc->p[0].w.den * p_chroma_desc->pixel_size) )
+        {
+            msg_Err(obj, "Bogus %4.4s pitch detected. %d vs %d", (const char*)&fmt->i_chroma,
+                    mappedResource.RowPitch,
+                    (fmt->i_width * p_chroma_desc->p[0].w.num / p_chroma_desc->p[0].w.den * p_chroma_desc->pixel_size));
+            goto error;
+        }
     }
 
     if (slicedTexture)