gstreamer/ext/wayland/gstwaylandsink.h
Randy Li (ayaka) 0d746d1022 waylandsink: prevent frame callback being released twice
For those using context from the application which
would be the embedded video case, if the frame callback
is entering at the same time as window is finalizing,
a wayland proxy object would be destroyed twice, leading
the refcout less than zero in the second time, it can
throw an abort() in wayland.

For those top window case, which as a directly connection
to the compositor, they can stop the message queue then
the frame callback won't happen at the same time as the
window is finalizing. It doesn't think it would bother
them about this.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1883>
2021-06-15 16:25:17 -04:00

85 lines
2.4 KiB
C

/*
* GStreamer Wayland video sink
* Copyright (C) 2011 Intel Corporation
* Copyright (C) 2011 Sreerenj Balachandran <sreerenj.balachandran@intel.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA.
*/
#ifndef __GST_WAYLAND_VIDEO_SINK_H__
#define __GST_WAYLAND_VIDEO_SINK_H__
#include <gst/gst.h>
#include <gst/video/video.h>
#include <wayland-client.h>
#include "wldisplay.h"
#include "wlwindow.h"
G_BEGIN_DECLS
#define GST_TYPE_WAYLAND_SINK \
(gst_wayland_sink_get_type())
#define GST_WAYLAND_SINK(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WAYLAND_SINK,GstWaylandSink))
#define GST_WAYLAND_SINK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_WAYLAND_SINK,GstWaylandSinkClass))
#define GST_IS_WAYLAND_SINK(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WAYLAND_SINK))
#define GST_IS_WAYLAND_SINK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WAYLAND_SINK))
#define GST_WAYLAND_SINK_GET_CLASS(inst) \
(G_TYPE_INSTANCE_GET_CLASS ((inst), GST_TYPE_WAYLAND_SINK, GstWaylandSinkClass))
typedef struct _GstWaylandSink GstWaylandSink;
typedef struct _GstWaylandSinkClass GstWaylandSinkClass;
struct _GstWaylandSink
{
GstVideoSink parent;
GMutex display_lock;
GstWlDisplay *display;
GstWlWindow *window;
GstBufferPool *pool;
gboolean use_dmabuf;
gboolean video_info_changed;
GstVideoInfo video_info;
gboolean fullscreen;
gchar *display_name;
gboolean redraw_pending;
GMutex render_lock;
GstBuffer *last_buffer;
struct wl_callback *callback;
};
struct _GstWaylandSinkClass
{
GstVideoSinkClass parent;
};
GType gst_wayland_sink_get_type (void) G_GNUC_CONST;
GST_ELEMENT_REGISTER_DECLARE (waylandsink);
G_END_DECLS
#endif /* __GST_WAYLAND_VIDEO_SINK_H__ */