Rémi Bernon : winegstreamer: Return E_UNEXPECTED from WMReader_Open when already opened.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: d6af590a8078bb555996ab96dc8845d3d0a3259f
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=d6af590a8078bb555996ab96dc8845d3d0a3259f

Author: Rémi Bernon <rbernon at codeweavers.com>
Date:   Fri Jun 10 17:27:02 2022 +0200

winegstreamer: Return E_UNEXPECTED from WMReader_Open when already opened.

Signed-off-by: Rémi Bernon <rbernon at codeweavers.com>

---

 dlls/winegstreamer/wm_asyncreader.c | 7 +++++++
 dlls/wmvcore/tests/wmvcore.c        | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/dlls/winegstreamer/wm_asyncreader.c b/dlls/winegstreamer/wm_asyncreader.c
index df7c701f6f0..e70498b9858 100644
--- a/dlls/winegstreamer/wm_asyncreader.c
+++ b/dlls/winegstreamer/wm_asyncreader.c
@@ -222,6 +222,13 @@ static HRESULT WINAPI WMReader_Open(IWMReader *iface, const WCHAR *url,
 
     EnterCriticalSection(&reader->reader.cs);
 
+    if (reader->reader.wg_parser)
+    {
+        LeaveCriticalSection(&reader->reader.cs);
+        WARN("Stream is already open; returning E_UNEXPECTED.\n");
+        return E_UNEXPECTED;
+    }
+
     if (SUCCEEDED(hr = wm_reader_open_file(&reader->reader, url)))
         open_stream(reader, callback, context);
 
diff --git a/dlls/wmvcore/tests/wmvcore.c b/dlls/wmvcore/tests/wmvcore.c
index 315173b9860..59d1f5abcc6 100644
--- a/dlls/wmvcore/tests/wmvcore.c
+++ b/dlls/wmvcore/tests/wmvcore.c
@@ -2541,6 +2541,9 @@ static void test_async_reader_file(void)
     ret = WaitForSingleObject(callback.got_opened, 1000);
     ok(!ret, "Wait timed out.\n");
 
+    hr = IWMReader_Open(reader, filename, &callback.IWMReaderCallback_iface, (void **)0xdeadbee0);
+    ok(hr == E_UNEXPECTED, "Got hr %#lx.\n", hr);
+
     count = 0xdeadbeef;
     hr = IWMReader_GetOutputCount(reader, &count);
     ok(hr == S_OK, "Got hr %#lx.\n", hr);