[PATCH 1/3] winegstreamer: Make find_element accept NULL caps.

[Ziqing Hui]

From: Ziqing Hui

---
 dlls/winegstreamer/unixlib.c | 22 ++++++++++++++--------
 1 file changed, 14 insertions(+), 8 deletions(-)

diff --git a/dlls/winegstreamer/unixlib.c b/dlls/winegstreamer/unixlib.c
index 6ed38260536..4fcf7d0d469 100644
--- a/dlls/winegstreamer/unixlib.c
+++ b/dlls/winegstreamer/unixlib.c
@@ -87,15 +87,21 @@ GstElement *find_element(GstElementFactoryListType type, GstCaps *src_caps, GstC
     if (!(transforms = gst_element_factory_list_get_elements(type, GST_RANK_MARGINAL)))
         goto done;

-    tmp = gst_element_factory_list_filter(transforms, src_caps, GST_PAD_SINK, FALSE);
-    gst_plugin_feature_list_free(transforms);
-    if (!(transforms = tmp))
-        goto done;
+    if (src_caps)
+    {
+        tmp = gst_element_factory_list_filter(transforms, src_caps, GST_PAD_SINK, FALSE);
+        gst_plugin_feature_list_free(transforms);
+        if (!(transforms = tmp))
+            goto done;
+    }

-    tmp = gst_element_factory_list_filter(transforms, sink_caps, GST_PAD_SRC, FALSE);
-    gst_plugin_feature_list_free(transforms);
-    if (!(transforms = tmp))
-        goto done;
+    if (sink_caps)
+    {
+        tmp = gst_element_factory_list_filter(transforms, sink_caps, GST_PAD_SRC, FALSE);
+        gst_plugin_feature_list_free(transforms);
+        if (!(transforms = tmp))
+            goto done;
+    }

transforms = g_list_sort(transforms, gst_plugin_feature_rank_compare_func);
     for (tmp = transforms; tmp != NULL && element == NULL; tmp = tmp->next)