windowscodecs: Simplify the buffer size check in copy_pixels() helper.

Signed-off-by: Dmitry Timoshkov <dmitry@baikal.ru> Signed-off-by: Vincent Povirk <vincent@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

windowscodecs: Simplify the buffer size check in copy_pixels() helper.
3887c04f · Dmitry Timoshkov · Alexandre Julliard · db8f5998 · 3887c04f
Commit 3887c04f authored Jan 09, 2019 by Dmitry Timoshkov Committed by Alexandre Julliard Jan 10, 2019
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main.c dlls/windowscodecs/main.c +1 -1

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--- a/dlls/windowscodecs/main.c
+++ b/dlls/windowscodecs/main.c
@@ -82,7 +82,7 @@ HRESULT copy_pixels(UINT bpp, const BYTE *srcbuffer,
    if (dststride < bytesperrow)
        return E_INVALIDARG;

-    if ((dststride * (rc->Height-1)) + ((rc->Width * bpp) + 7)/8 > dstbuffersize)
+    if ((dststride * (rc->Height-1)) + bytesperrow > dstbuffersize)
        return E_INVALIDARG;

    /* if the whole bitmap is copied and the buffer format matches then it's a matter of a single memcpy */