/* GStreamer Wayland video sink
 *
 * Copyright (C) 2014 Collabora Ltd.
 *
 * 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_WL_DISPLAY_H__
#define __GST_WL_DISPLAY_H__

#include <gst/gst.h>
#include <gst/video/video.h>
#include <wayland-client.h>
#include "viewporter-client-protocol.h"
#include "linux-dmabuf-unstable-v1-client-protocol.h"
#include "alpha-compositing-unstable-v1-client-protocol.h"

G_BEGIN_DECLS

#define GST_TYPE_WL_DISPLAY                  (gst_wl_display_get_type ())
#define GST_WL_DISPLAY(obj)                  (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_WL_DISPLAY, GstWlDisplay))
#define GST_IS_WL_DISPLAY(obj)               (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_WL_DISPLAY))
#define GST_WL_DISPLAY_CLASS(klass)          (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_WL_DISPLAY, GstWlDisplayClass))
#define GST_IS_WL_DISPLAY_CLASS(klass)       (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_WL_DISPLAY))
#define GST_WL_DISPLAY_GET_CLASS(obj)        (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_WL_DISPLAY, GstWlDisplayClass))

typedef struct _GstWlDisplay GstWlDisplay;
typedef struct _GstWlDisplayClass GstWlDisplayClass;

struct _GstWlDisplay
{
  GObject parent_instance;

  /* public objects */
  struct wl_display *display;
  struct wl_event_queue *queue;

  /* globals */
  struct wl_registry *registry;
  struct wl_compositor *compositor;
  struct wl_subcompositor *subcompositor;
  struct wl_shell *shell;
  struct wl_shm *shm;
  struct wp_viewporter *viewporter;
  struct zwp_linux_dmabuf_v1 *dmabuf;
  struct zwp_alpha_compositing_v1 *alpha_compositing;
  GArray *shm_formats;
  GArray *dmabuf_formats;

  /* private */
  gboolean own_display;
  GThread *thread;
  GstPoll *wl_fd_poll;

  GMutex buffers_mutex;
  GHashTable *buffers;
  gboolean shutting_down;
};

struct _GstWlDisplayClass
{
  GObjectClass parent_class;
};

GType gst_wl_display_get_type (void);

GstWlDisplay *gst_wl_display_new (const gchar * name, GError ** error);
GstWlDisplay *gst_wl_display_new_existing (struct wl_display * display,
    gboolean take_ownership, GError ** error);

/* see wlbuffer.c for explanation */
void gst_wl_display_register_buffer (GstWlDisplay * self, gpointer buf);
void gst_wl_display_unregister_buffer (GstWlDisplay * self, gpointer buf);

gboolean gst_wl_display_check_format_for_shm (GstWlDisplay * display,
    GstVideoFormat format);
gboolean gst_wl_display_check_format_for_dmabuf (GstWlDisplay * display,
    GstVideoFormat format);

G_END_DECLS

#endif /* __GST_WL_DISPLAY_H__ */