[PATCH v2 2/8] winegstreamer: Send stream-start and caps events on creation.

[Rémi Bernon]

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=51931
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=52391
Signed-off-by: Rémi Bernon <rbernon at codeweavers.com>
---
 dlls/winegstreamer/wg_transform.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/dlls/winegstreamer/wg_transform.c b/dlls/winegstreamer/wg_transform.c
index 7160fd087b6..a4a4d886865 100644
--- a/dlls/winegstreamer/wg_transform.c
+++ b/dlls/winegstreamer/wg_transform.c
@@ -47,6 +47,7 @@ struct wg_transform
     GstElement *container;
     GstPad *my_src, *my_sink;
     GstPad *their_sink, *their_src;
+    GstSegment segment;
 };
 
 static GstFlowReturn transform_sink_chain_cb(GstPad *pad, GstObject *parent, GstBuffer *buffer)
@@ -156,6 +157,7 @@ NTSTATUS wg_transform_create(void *args)
     GstPadTemplate *template = NULL;
     struct wg_transform *transform;
     const gchar *media_type;
+    GstEvent *event;
 
     if (!init_gstreamer())
         return STATUS_UNSUCCESSFUL;
@@ -259,6 +261,23 @@ NTSTATUS wg_transform_create(void *args)
     if (!gst_element_get_state(transform->container, NULL, NULL, -1))
         goto out_unlink_sink_pad;
 
+    if (!(event = gst_event_new_stream_start("stream"))
+            || !gst_pad_push_event(transform->my_src, event))
+        goto out_unlink_sink_pad;
+    if (!(event = gst_event_new_caps(src_caps))
+            || !gst_pad_push_event(transform->my_src, event))
+        goto out_unlink_sink_pad;
+
+    /* We need to use GST_FORMAT_TIME here because it's the only format
+     * some elements such avdec_wmav2 correctly support.
+     */
+    gst_segment_init(&transform->segment, GST_FORMAT_TIME);
+    transform->segment.start = 0;
+    transform->segment.stop = -1;
+    if (!(event = gst_event_new_segment(&transform->segment))
+            || !gst_pad_push_event(transform->my_src, event))
+        goto out_unlink_sink_pad;
+
     gst_caps_unref(sink_caps);
     gst_caps_unref(src_caps);
 
@@ -283,6 +302,7 @@ out_free_src_pad:
 out_free_src_caps:
     gst_caps_unref(src_caps);
 out_free_container:
+    gst_element_set_state(transform->container, GST_STATE_NULL);
     gst_object_unref(transform->container);
 out_free_transform:
     free(transform);
-- 
2.34.1