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gst: libcamerasrc: Send stream start event

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Prior to sending caps, we need to send a stream-start event. This requires
generating a stream and a group id. The stream id is random for live sources and
the group id is shared across all pads.

Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Nicolas Dufresne
2020-01-21 19:13:05 -05:00
committed by Laurent Pinchart
parent 6d69661c24
commit e5f4398c19
1 changed files with 11 additions and 0 deletions
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11
src/gstreamer/gstlibcamerasrc.cpp
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@@ -131,8 +131,19 @@ static void
gst_libcamera_src_task_enter(GstTask *task, GThread *thread, gpointer user_data)
{
GstLibcameraSrc *self = GST_LIBCAMERA_SRC(user_data);
GLibRecLocker lock(&self->stream_lock);
GstLibcameraSrcState *state = self->state;
GST_DEBUG_OBJECT(self, "Streaming thread has started");
guint group_id = gst_util_group_id_next();
for (GstPad *srcpad : state->srcpads_) {
/* Create stream-id and push stream-start. */
g_autofree gchar *stream_id = gst_pad_create_stream_id(srcpad, GST_ELEMENT(self), nullptr);
GstEvent *event = gst_event_new_stream_start(stream_id);
gst_event_set_group_id(event, group_id);
gst_pad_push_event(srcpad, event);
}
}
static void