gstreamer/subprojects/gst-plugins-bad/gst-libs/gst/vulkan/wayland/gstvkdisplay_wayland.c

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/*
* GStreamer
* Copyright (C) 2016 Matthew Waters <matthew@centricular.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 St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/vulkan/wayland/gstvkdisplay_wayland.h>
#include "wayland_event_source.h"
GST_DEBUG_CATEGORY_STATIC (gst_vulkan_display_wayland_debug);
#define GST_CAT_DEFAULT gst_vulkan_display_wayland_debug
G_DEFINE_TYPE_WITH_CODE (GstVulkanDisplayWayland, gst_vulkan_display_wayland,
GST_TYPE_VULKAN_DISPLAY, GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT,
"vulkandisplaywayland", 0, "Vulkan Wayland Display");
);
static void gst_vulkan_display_wayland_finalize (GObject * object);
static gpointer gst_vulkan_display_wayland_get_handle (GstVulkanDisplay *
display);
static void
registry_handle_global (void *data, struct wl_registry *registry,
uint32_t name, const char *interface, uint32_t version)
{
GstVulkanDisplayWayland *display = data;
GST_TRACE_OBJECT (display, "registry_handle_global with registry %p, "
"interface %s, version %u", registry, interface, version);
if (g_strcmp0 (interface, "wl_compositor") == 0) {
display->compositor =
wl_registry_bind (registry, name, &wl_compositor_interface, 1);
} else if (g_strcmp0 (interface, "wl_subcompositor") == 0) {
display->subcompositor =
wl_registry_bind (registry, name, &wl_subcompositor_interface, 1);
} else if (g_strcmp0 (interface, "wl_shell") == 0) {
display->shell = wl_registry_bind (registry, name, &wl_shell_interface, 1);
}
}
static const struct wl_registry_listener registry_listener = {
registry_handle_global
};
static void
_connect_listeners (GstVulkanDisplayWayland * display)
{
display->registry = wl_display_get_registry (display->display);
wl_registry_add_listener (display->registry, &registry_listener, display);
wl_display_roundtrip (display->display);
}
static void
gst_vulkan_display_wayland_class_init (GstVulkanDisplayWaylandClass * klass)
{
GST_VULKAN_DISPLAY_CLASS (klass)->get_handle =
GST_DEBUG_FUNCPTR (gst_vulkan_display_wayland_get_handle);
G_OBJECT_CLASS (klass)->finalize = gst_vulkan_display_wayland_finalize;
}
static void
gst_vulkan_display_wayland_init (GstVulkanDisplayWayland * display_wayland)
{
GstVulkanDisplay *display = (GstVulkanDisplay *) display_wayland;
display->type = GST_VULKAN_DISPLAY_TYPE_WAYLAND;
display_wayland->foreign_display = FALSE;
}
static void
gst_vulkan_display_wayland_finalize (GObject * object)
{
GstVulkanDisplayWayland *display_wayland =
GST_VULKAN_DISPLAY_WAYLAND (object);
if (!display_wayland->foreign_display && display_wayland->display) {
wl_display_flush (display_wayland->display);
wl_display_disconnect (display_wayland->display);
}
G_OBJECT_CLASS (gst_vulkan_display_wayland_parent_class)->finalize (object);
}
/**
* gst_vulkan_display_wayland_new:
* @name: (allow-none): a display name
*
* Create a new #GstVulkanDisplayWayland from the wayland display name. See `wl_display_connect`()
* for details on what is a valid name.
*
* Returns: (transfer full): a new #GstVulkanDisplayWayland or %NULL
*
* Since: 1.18
*/
GstVulkanDisplayWayland *
gst_vulkan_display_wayland_new (const gchar * name)
{
GstVulkanDisplayWayland *ret;
ret = g_object_new (GST_TYPE_VULKAN_DISPLAY_WAYLAND, NULL);
gst_object_ref_sink (ret);
ret->display = wl_display_connect (name);
if (!ret->display) {
GST_ERROR ("Failed to open Wayland display connection with name, \'%s\'",
name);
return NULL;
}
/* connecting the listeners after attaching the event source will race with
* the source and the source may eat an event that we're waiting for and
* deadlock */
_connect_listeners (ret);
GST_VULKAN_DISPLAY (ret)->event_source =
wayland_event_source_new (ret->display, NULL);
g_source_attach (GST_VULKAN_DISPLAY (ret)->event_source,
GST_VULKAN_DISPLAY (ret)->main_context);
return ret;
}
/**
* gst_vulkan_display_wayland_new_with_display:
* @display: an existing, wayland display
*
* Creates a new display connection from a wl_display Display.
*
* Returns: (transfer full): a new #GstVulkanDisplayWayland
*
* Since: 1.18
*/
GstVulkanDisplayWayland *
gst_vulkan_display_wayland_new_with_display (struct wl_display * display)
{
GstVulkanDisplayWayland *ret;
g_return_val_if_fail (display != NULL, NULL);
ret = g_object_new (GST_TYPE_VULKAN_DISPLAY_WAYLAND, NULL);
gst_object_ref_sink (ret);
ret->display = display;
ret->foreign_display = TRUE;
_connect_listeners (ret);
return ret;
}
static gpointer
gst_vulkan_display_wayland_get_handle (GstVulkanDisplay * display)
{
return GST_VULKAN_DISPLAY_WAYLAND (display)->display;
}
static gboolean
_roundtrip_async (gpointer data)
{
GstVulkanDisplayWayland *display = data;
wl_display_roundtrip (display->display);
return G_SOURCE_REMOVE;
}
void
gst_vulkan_display_wayland_roundtrip_async (GstVulkanDisplayWayland * display)
{
g_return_if_fail (GST_IS_VULKAN_DISPLAY_WAYLAND (display));
g_main_context_invoke (GST_VULKAN_DISPLAY (display)->main_context,
(GSourceFunc) _roundtrip_async, display);
}