From ba913316adafdafedd13f403d064bf6b536fd051 Mon Sep 17 00:00:00 2001
From: Ziqing Hui <zhui@codeweavers.com>
Date: Mon, 24 Aug 2020 12:09:27 +0800
Subject: [PATCH] windowscodecs: Add a lock for DdsFrameDecode.

Signed-off-by: Ziqing Hui <zhui@codeweavers.com>
Signed-off-by: Esme Povirk <esme@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
---
 dlls/windowscodecs/ddsformat.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dlls/windowscodecs/ddsformat.c b/dlls/windowscodecs/ddsformat.c
index 12b6c42f64a..c179a389359 100644
--- a/dlls/windowscodecs/ddsformat.c
+++ b/dlls/windowscodecs/ddsformat.c
@@ -150,6 +150,7 @@ typedef struct DdsFrameDecode {
     IWICDdsFrameDecode IWICDdsFrameDecode_iface;
     LONG ref;
     BYTE *data;
+    CRITICAL_SECTION lock;
     dds_frame_info info;
 } DdsFrameDecode;
 
@@ -777,6 +778,8 @@ static HRESULT DdsFrameDecode_CreateInstance(DdsFrameDecode **frame_decode)
     result->IWICBitmapFrameDecode_iface.lpVtbl = &DdsFrameDecode_Vtbl;
     result->IWICDdsFrameDecode_iface.lpVtbl = &DdsFrameDecode_Dds_Vtbl;
     result->ref = 1;
+    InitializeCriticalSection(&result->lock);
+    result->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": DdsFrameDecode.lock");
 
     *frame_decode = result;
     return S_OK;