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/*
* GStreamer Wayland Library
* 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 St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/wayland/wayland.h>
#include <gst/video/videooverlay.h>
gboolean
gst_is_wayland_display_handle_need_context_message (GstMessage * msg)
{
const gchar *type = NULL;
g_return_val_if_fail (GST_IS_MESSAGE (msg), FALSE);
if (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_NEED_CONTEXT &&
gst_message_parse_context_type (msg, &type)) {
return !g_strcmp0 (type, GST_WAYLAND_DISPLAY_HANDLE_CONTEXT_TYPE);
}
return FALSE;
}
GstContext *
gst_wayland_display_handle_context_new (struct wl_display * display)
{
GstContext *context =
gst_context_new (GST_WAYLAND_DISPLAY_HANDLE_CONTEXT_TYPE, TRUE);
gst_structure_set (gst_context_writable_structure (context),
"display", G_TYPE_POINTER, display, NULL);
return context;
}
struct wl_display *
gst_wayland_display_handle_context_get_handle (GstContext * context)
{
const GstStructure *s;
struct wl_display *display;
g_return_val_if_fail (GST_IS_CONTEXT (context), NULL);
s = gst_context_get_structure (context);
if (gst_structure_get (s, "display", G_TYPE_POINTER, &display, NULL))
return display;
if (gst_structure_get (s, "handle", G_TYPE_POINTER, &display, NULL))
return display;
return NULL;
}
G_DEFINE_INTERFACE (GstWaylandVideo, gst_wayland_video, GST_TYPE_VIDEO_OVERLAY);
static void
gst_wayland_video_default_init (GstWaylandVideoInterface * klass)
{
(void) klass;
}
/**
* gst_wayland_video_begin_geometry_change:
*
* Notifies the video sink that we are about to change its
* geometry (probably using set_render_rectangle()). This is useful
* in order to allow the sink to synchronize resizing/moving of the
* video area with the parent surface and avoid glitches, in cases
* where the video area is being painted asynchronously from another
* thread, like in waylandsink.
*
* Please note that any calls to this method MUST be matched by
* calls to end_geometry_change() and AFTER the parent surface has
* committed its geometry changes.
*/
void
gst_wayland_video_begin_geometry_change (GstWaylandVideo * video)
{
GstWaylandVideoInterface *iface;
g_return_if_fail (video != NULL);
g_return_if_fail (GST_IS_WAYLAND_VIDEO (video));
iface = GST_WAYLAND_VIDEO_GET_INTERFACE (video);
if (iface->begin_geometry_change) {
iface->begin_geometry_change (video);
}
}
/**
* gst_wayland_video_end_geometry_change:
*
* Notifies the video sink that we just finished changing the
* geometry of both itself and its parent surface. This should
* have been earlier preceded by a call to begin_geometry_change()
* which notified the sink before any of these changes had happened.
*
* It is important to call this method only AFTER the parent surface
* has committed its geometry changes, otherwise no synchronization
* is actually achieved.
*/
void
gst_wayland_video_end_geometry_change (GstWaylandVideo * video)
{
GstWaylandVideoInterface *iface;
g_return_if_fail (video != NULL);
g_return_if_fail (GST_IS_WAYLAND_VIDEO (video));
iface = GST_WAYLAND_VIDEO_GET_INTERFACE (video);
if (iface->end_geometry_change) {
iface->end_geometry_change (video);
}
}
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