Rémi Bernon : winegstreamer: Return NS_E_INVALID_REQUEST on WMReader Start before Open.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: d54b194550171726ebe7a926bcaf1688b91055de
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=d54b194550171726ebe7a926b...

Author: Rémi Bernon <rbernon(a)codeweavers.com>
Date:   Fri Jun 10 17:12:00 2022 +0200

winegstreamer: Return NS_E_INVALID_REQUEST on WMReader Start before Open.

Signed-off-by: Rémi Bernon <rbernon(a)codeweavers.com>

---

 dlls/winegstreamer/wm_asyncreader.c | 7 +++++++
 dlls/wmvcore/tests/wmvcore.c        | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/dlls/winegstreamer/wm_asyncreader.c b/dlls/winegstreamer/wm_asyncreader.c
index 947b3307a3a..df7c701f6f0 100644
--- a/dlls/winegstreamer/wm_asyncreader.c
+++ b/dlls/winegstreamer/wm_asyncreader.c
@@ -318,6 +318,13 @@ static HRESULT WINAPI WMReader_Start(IWMReader *iface,
 
     EnterCriticalSection(&reader->reader.cs);
 
+    if (!reader->reader.wg_parser)
+    {
+        LeaveCriticalSection(&reader->reader.cs);
+        WARN("No stream is open; returning NS_E_INVALID_REQUEST.\n");
+        return NS_E_INVALID_REQUEST;
+    }
+
     stop_streaming(reader);
 
     IWMReaderCallback_OnStatus(reader->callback, WMT_STARTED, S_OK, WMT_TYPE_DWORD, (BYTE *)&zero, context);
diff --git a/dlls/wmvcore/tests/wmvcore.c b/dlls/wmvcore/tests/wmvcore.c
index 50a7a023488..315173b9860 100644
--- a/dlls/wmvcore/tests/wmvcore.c
+++ b/dlls/wmvcore/tests/wmvcore.c
@@ -2171,6 +2171,8 @@ static void test_async_reader_streaming(void)
 
     hr = IWMReader_Stop(reader);
     ok(hr == E_UNEXPECTED, "Got hr %#lx.\n", hr);
+    hr = IWMReader_Start(reader, 0, 0, 1.0, NULL);
+    ok(hr == NS_E_INVALID_REQUEST, "Got hr %#lx.\n", hr);
 
     hr = IWMReaderAdvanced2_OpenStream(advanced, &stream.IStream_iface, &callback.IWMReaderCallback_iface, (void **)0xdeadbeef);
     ok(hr == S_OK, "Got hr %#lx.\n", hr);