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129 lines
3.8 KiB
C
129 lines
3.8 KiB
C
/*
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* GStreamer Wayland Library
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* Copyright (C) 2014 Collabora Ltd.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/wayland/wayland.h>
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#include <gst/video/videooverlay.h>
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gboolean
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gst_is_wayland_display_handle_need_context_message (GstMessage * msg)
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{
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const gchar *type = NULL;
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g_return_val_if_fail (GST_IS_MESSAGE (msg), FALSE);
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if (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_NEED_CONTEXT &&
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gst_message_parse_context_type (msg, &type)) {
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return !g_strcmp0 (type, GST_WAYLAND_DISPLAY_HANDLE_CONTEXT_TYPE);
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}
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return FALSE;
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}
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GstContext *
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gst_wayland_display_handle_context_new (struct wl_display * display)
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{
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GstContext *context =
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gst_context_new (GST_WAYLAND_DISPLAY_HANDLE_CONTEXT_TYPE, TRUE);
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gst_structure_set (gst_context_writable_structure (context),
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"handle", G_TYPE_POINTER, display, NULL);
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return context;
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}
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struct wl_display *
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gst_wayland_display_handle_context_get_handle (GstContext * context)
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{
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const GstStructure *s;
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struct wl_display *display;
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g_return_val_if_fail (GST_IS_CONTEXT (context), NULL);
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s = gst_context_get_structure (context);
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gst_structure_get (s, "handle", G_TYPE_POINTER, &display, NULL);
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return display;
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}
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G_DEFINE_INTERFACE (GstWaylandVideo, gst_wayland_video, GST_TYPE_VIDEO_OVERLAY);
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static void
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gst_wayland_video_default_init (GstWaylandVideoInterface * klass)
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{
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(void) klass;
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}
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/**
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* gst_wayland_video_begin_geometry_change:
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*
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* Notifies the video sink that we are about to change its
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* geometry (probably using set_render_rectangle()). This is useful
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* in order to allow the sink to synchronize resizing/moving of the
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* video area with the parent surface and avoid glitches, in cases
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* where the video area is being painted asynchronously from another
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* thread, like in waylandsink.
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*
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* Please note that any calls to this method MUST be matched by
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* calls to end_geometry_change() and AFTER the parent surface has
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* commited its geometry changes.
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*/
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void
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gst_wayland_video_begin_geometry_change (GstWaylandVideo * video)
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{
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GstWaylandVideoInterface *iface;
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g_return_if_fail (video != NULL);
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g_return_if_fail (GST_IS_WAYLAND_VIDEO (video));
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iface = GST_WAYLAND_VIDEO_GET_INTERFACE (video);
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if (iface->begin_geometry_change) {
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iface->begin_geometry_change (video);
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}
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}
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/**
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* gst_wayland_video_end_geometry_change:
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*
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* Notifies the video sink that we just finished changing the
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* geometry of both itself and its parent surface. This should
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* have been earlier preceeded by a call to begin_geometry_change()
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* which notified the sink before any of these changes had happened.
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*
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* It is important to call this method only AFTER the parent surface
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* has commited its geometry changes, otherwise no synchronization
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* is actually achieved.
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*/
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void
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gst_wayland_video_end_geometry_change (GstWaylandVideo * video)
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{
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GstWaylandVideoInterface *iface;
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g_return_if_fail (video != NULL);
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g_return_if_fail (GST_IS_WAYLAND_VIDEO (video));
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iface = GST_WAYLAND_VIDEO_GET_INTERFACE (video);
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if (iface->end_geometry_change) {
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iface->end_geometry_change (video);
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}
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}
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