winegstreamer: Acquire all of the flushing locks in GST_Seeking_SetPositions().

The current code unintentionally repeatedly acquires the lock for the stream currently being seeked. Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=50906Signed-off-by: Zebediah Figura <zfigura@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

winegstreamer: Acquire all of the flushing locks in GST_Seeking_SetPositions().
fa3fa0e3 · Zebediah Figura · Alexandre Julliard · 8138159f · fa3fa0e3
Commit fa3fa0e3 authored Dec 13, 2021 by Zebediah Figura Committed by Alexandre Julliard Dec 14, 2021
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Showing with 12 additions and 6 deletions

quartz_parser.c dlls/winegstreamer/quartz_parser.c +12 -6

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--- a/dlls/winegstreamer/quartz_parser.c
+++ b/dlls/winegstreamer/quartz_parser.c
@@ -1327,8 +1327,10 @@ static HRESULT WINAPI GST_Seeking_SetPositions(IMediaSeeking *iface,
     * ensures the seek is serialized between flushes. */
    for (i = 0; i < filter->source_count; ++i)
    {
-        if (filter->sources[i]->pin.pin.peer)
-            EnterCriticalSection(&pin->flushing_cs);
+        struct parser_source *flush_pin = filter->sources[i];
+
+        if (flush_pin->pin.pin.peer)
+            EnterCriticalSection(&flush_pin->flushing_cs);
    }

    SourceSeekingImpl_SetPositions(iface, current, current_flags, stop, stop_flags);
@@ -1342,8 +1344,10 @@ static HRESULT WINAPI GST_Seeking_SetPositions(IMediaSeeking *iface,

        for (i = 0; i < filter->source_count; ++i)
        {
-            if (filter->sources[i]->pin.pin.peer)
-                IPin_EndFlush(filter->sources[i]->pin.pin.peer);
+            struct parser_source *flush_pin = filter->sources[i];
+
+            if (flush_pin->pin.pin.peer)
+                IPin_EndFlush(flush_pin->pin.pin.peer);
        }

        if (filter->reader)
@@ -1353,8 +1357,10 @@ static HRESULT WINAPI GST_Seeking_SetPositions(IMediaSeeking *iface,
    /* Release the flushing locks. */
    for (i = filter->source_count - 1; i >= 0; --i)
    {
-        if (filter->sources[i]->pin.pin.peer)
-            LeaveCriticalSection(&pin->flushing_cs);
+        struct parser_source *flush_pin = filter->sources[i];
+
+        if (flush_pin->pin.pin.peer)
+            LeaveCriticalSection(&flush_pin->flushing_cs);
    }

    return S_OK;