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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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568 lines
16 KiB
C
568 lines
16 KiB
C
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/* GStreamer Wayland Library
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*
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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 Free
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* Software Foundation, Inc., 51 Franklin Street, 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 "gstwldisplay.h"
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#include "fullscreen-shell-unstable-v1-client-protocol.h"
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#include "linux-dmabuf-unstable-v1-client-protocol.h"
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#include "viewporter-client-protocol.h"
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#include "xdg-shell-client-protocol.h"
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#include <errno.h>
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#define GST_CAT_DEFAULT gst_wl_display_debug
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
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typedef struct _GstWlDisplayPrivate
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{
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/* public objects */
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struct wl_display *display;
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struct wl_display *display_wrapper;
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struct wl_event_queue *queue;
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/* globals */
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struct wl_registry *registry;
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struct wl_compositor *compositor;
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struct wl_subcompositor *subcompositor;
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struct xdg_wm_base *xdg_wm_base;
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struct zwp_fullscreen_shell_v1 *fullscreen_shell;
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struct wl_shm *shm;
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struct wp_viewporter *viewporter;
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struct zwp_linux_dmabuf_v1 *dmabuf;
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GArray *shm_formats;
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GArray *dmabuf_formats;
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/* private */
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gboolean own_display;
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GThread *thread;
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GstPoll *wl_fd_poll;
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GMutex buffers_mutex;
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GHashTable *buffers;
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gboolean shutting_down;
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} GstWlDisplayPrivate;
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G_DEFINE_TYPE_WITH_CODE (GstWlDisplay, gst_wl_display, G_TYPE_OBJECT,
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G_ADD_PRIVATE (GstWlDisplay)
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GST_DEBUG_CATEGORY_INIT (gst_wl_display_debug,
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"wldisplay", 0, "wldisplay library");
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);
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static void gst_wl_display_finalize (GObject * gobject);
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static void
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gst_wl_display_class_init (GstWlDisplayClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->finalize = gst_wl_display_finalize;
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}
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static void
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gst_wl_display_init (GstWlDisplay * self)
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{
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GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
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priv->shm_formats = g_array_new (FALSE, FALSE, sizeof (uint32_t));
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priv->dmabuf_formats = g_array_new (FALSE, FALSE, sizeof (uint32_t));
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priv->wl_fd_poll = gst_poll_new (TRUE);
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priv->buffers = g_hash_table_new (g_direct_hash, g_direct_equal);
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g_mutex_init (&priv->buffers_mutex);
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gst_wl_linux_dmabuf_init_once ();
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gst_wl_shm_allocator_init_once ();
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gst_wl_videoformat_init_once ();
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}
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static void
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gst_wl_ref_wl_buffer (gpointer key, gpointer value, gpointer user_data)
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{
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g_object_ref (value);
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}
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static void
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gst_wl_display_finalize (GObject * gobject)
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{
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GstWlDisplay *self = GST_WL_DISPLAY (gobject);
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GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
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gst_poll_set_flushing (priv->wl_fd_poll, TRUE);
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if (priv->thread)
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g_thread_join (priv->thread);
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/* to avoid buffers being unregistered from another thread
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* at the same time, take their ownership */
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g_mutex_lock (&priv->buffers_mutex);
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priv->shutting_down = TRUE;
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g_hash_table_foreach (priv->buffers, gst_wl_ref_wl_buffer, NULL);
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g_mutex_unlock (&priv->buffers_mutex);
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g_hash_table_foreach (priv->buffers,
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(GHFunc) gst_wl_buffer_force_release_and_unref, NULL);
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g_hash_table_remove_all (priv->buffers);
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g_array_unref (priv->shm_formats);
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g_array_unref (priv->dmabuf_formats);
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gst_poll_free (priv->wl_fd_poll);
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g_hash_table_unref (priv->buffers);
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g_mutex_clear (&priv->buffers_mutex);
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if (priv->viewporter)
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wp_viewporter_destroy (priv->viewporter);
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if (priv->shm)
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wl_shm_destroy (priv->shm);
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if (priv->dmabuf)
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zwp_linux_dmabuf_v1_destroy (priv->dmabuf);
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if (priv->xdg_wm_base)
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xdg_wm_base_destroy (priv->xdg_wm_base);
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if (priv->fullscreen_shell)
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zwp_fullscreen_shell_v1_release (priv->fullscreen_shell);
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if (priv->compositor)
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wl_compositor_destroy (priv->compositor);
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if (priv->subcompositor)
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wl_subcompositor_destroy (priv->subcompositor);
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if (priv->registry)
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wl_registry_destroy (priv->registry);
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if (priv->display_wrapper)
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wl_proxy_wrapper_destroy (priv->display_wrapper);
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if (priv->queue)
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wl_event_queue_destroy (priv->queue);
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if (priv->own_display) {
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wl_display_flush (priv->display);
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wl_display_disconnect (priv->display);
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}
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G_OBJECT_CLASS (gst_wl_display_parent_class)->finalize (gobject);
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}
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static void
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shm_format (void *data, struct wl_shm *wl_shm, uint32_t format)
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{
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GstWlDisplay *self = data;
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GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
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g_array_append_val (priv->shm_formats, format);
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}
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static const struct wl_shm_listener shm_listener = {
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shm_format
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};
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static void
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dmabuf_format (void *data, struct zwp_linux_dmabuf_v1 *zwp_linux_dmabuf,
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uint32_t format)
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{
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GstWlDisplay *self = data;
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GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
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if (gst_wl_dmabuf_format_to_video_format (format) != GST_VIDEO_FORMAT_UNKNOWN)
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g_array_append_val (priv->dmabuf_formats, format);
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}
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static const struct zwp_linux_dmabuf_v1_listener dmabuf_listener = {
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dmabuf_format,
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};
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gboolean
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gst_wl_display_check_format_for_shm (GstWlDisplay * self, GstVideoFormat format)
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{
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GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
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enum wl_shm_format shm_fmt;
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GArray *formats;
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guint i;
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shm_fmt = gst_video_format_to_wl_shm_format (format);
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if (shm_fmt == (enum wl_shm_format) -1)
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return FALSE;
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formats = priv->shm_formats;
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for (i = 0; i < formats->len; i++) {
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if (g_array_index (formats, uint32_t, i) == shm_fmt)
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return TRUE;
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}
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return FALSE;
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}
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gboolean
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gst_wl_display_check_format_for_dmabuf (GstWlDisplay * self,
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GstVideoFormat format)
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{
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GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
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GArray *formats;
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guint i, dmabuf_fmt;
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if (!priv->dmabuf)
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return FALSE;
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dmabuf_fmt = gst_video_format_to_wl_dmabuf_format (format);
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if (dmabuf_fmt == (guint) - 1)
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return FALSE;
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formats = priv->dmabuf_formats;
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for (i = 0; i < formats->len; i++) {
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if (g_array_index (formats, uint32_t, i) == dmabuf_fmt)
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return TRUE;
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}
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return FALSE;
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}
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static void
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handle_xdg_wm_base_ping (void *user_data, struct xdg_wm_base *xdg_wm_base,
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uint32_t serial)
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{
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xdg_wm_base_pong (xdg_wm_base, serial);
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}
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static const struct xdg_wm_base_listener xdg_wm_base_listener = {
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handle_xdg_wm_base_ping
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};
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static void
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registry_handle_global (void *data, struct wl_registry *registry,
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uint32_t id, const char *interface, uint32_t version)
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{
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GstWlDisplay *self = data;
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GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
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if (g_strcmp0 (interface, "wl_compositor") == 0) {
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priv->compositor = wl_registry_bind (registry, id, &wl_compositor_interface,
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MIN (version, 4));
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} else if (g_strcmp0 (interface, "wl_subcompositor") == 0) {
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priv->subcompositor =
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wl_registry_bind (registry, id, &wl_subcompositor_interface, 1);
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} else if (g_strcmp0 (interface, "xdg_wm_base") == 0) {
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priv->xdg_wm_base =
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wl_registry_bind (registry, id, &xdg_wm_base_interface, 1);
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xdg_wm_base_add_listener (priv->xdg_wm_base, &xdg_wm_base_listener, self);
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} else if (g_strcmp0 (interface, "zwp_fullscreen_shell_v1") == 0) {
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priv->fullscreen_shell = wl_registry_bind (registry, id,
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&zwp_fullscreen_shell_v1_interface, 1);
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} else if (g_strcmp0 (interface, "wl_shm") == 0) {
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priv->shm = wl_registry_bind (registry, id, &wl_shm_interface, 1);
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wl_shm_add_listener (priv->shm, &shm_listener, self);
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} else if (g_strcmp0 (interface, "wp_viewporter") == 0) {
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priv->viewporter =
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wl_registry_bind (registry, id, &wp_viewporter_interface, 1);
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} else if (g_strcmp0 (interface, "zwp_linux_dmabuf_v1") == 0) {
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priv->dmabuf =
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wl_registry_bind (registry, id, &zwp_linux_dmabuf_v1_interface, 1);
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zwp_linux_dmabuf_v1_add_listener (priv->dmabuf, &dmabuf_listener, self);
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}
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}
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static void
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registry_handle_global_remove (void *data, struct wl_registry *registry,
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uint32_t name)
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{
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/* temporarily do nothing */
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}
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static const struct wl_registry_listener registry_listener = {
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registry_handle_global,
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registry_handle_global_remove
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};
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static gpointer
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gst_wl_display_thread_run (gpointer data)
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{
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GstWlDisplay *self = data;
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GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
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GstPollFD pollfd = GST_POLL_FD_INIT;
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pollfd.fd = wl_display_get_fd (priv->display);
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gst_poll_add_fd (priv->wl_fd_poll, &pollfd);
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gst_poll_fd_ctl_read (priv->wl_fd_poll, &pollfd, TRUE);
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/* main loop */
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while (1) {
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while (wl_display_prepare_read_queue (priv->display, priv->queue) != 0)
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wl_display_dispatch_queue_pending (priv->display, priv->queue);
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wl_display_flush (priv->display);
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if (gst_poll_wait (priv->wl_fd_poll, GST_CLOCK_TIME_NONE) < 0) {
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gboolean normal = (errno == EBUSY);
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wl_display_cancel_read (priv->display);
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if (normal)
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break;
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else
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goto error;
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}
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if (wl_display_read_events (priv->display) == -1)
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goto error;
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wl_display_dispatch_queue_pending (priv->display, priv->queue);
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}
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return NULL;
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error:
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GST_ERROR ("Error communicating with the wayland server");
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return NULL;
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}
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GstWlDisplay *
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gst_wl_display_new (const gchar * name, GError ** error)
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{
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struct wl_display *display;
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display = wl_display_connect (name);
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if (!display) {
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*error = g_error_new (g_quark_from_static_string ("GstWlDisplay"), 0,
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"Failed to connect to the wayland display '%s'",
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name ? name : "(default)");
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return NULL;
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} else {
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return gst_wl_display_new_existing (display, TRUE, error);
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}
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}
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GstWlDisplay *
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gst_wl_display_new_existing (struct wl_display * display,
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gboolean take_ownership, GError ** error)
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{
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GstWlDisplay *self;
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GstWlDisplayPrivate *priv;
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GError *err = NULL;
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gint i;
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g_return_val_if_fail (display != NULL, NULL);
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self = g_object_new (GST_TYPE_WL_DISPLAY, NULL);
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priv = gst_wl_display_get_instance_private (self);
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priv->display = display;
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priv->display_wrapper = wl_proxy_create_wrapper (display);
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priv->own_display = take_ownership;
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priv->queue = wl_display_create_queue (priv->display);
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wl_proxy_set_queue ((struct wl_proxy *) priv->display_wrapper, priv->queue);
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priv->registry = wl_display_get_registry (priv->display_wrapper);
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wl_registry_add_listener (priv->registry, ®istry_listener, self);
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/* we need exactly 2 roundtrips to discover global objects and their state */
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for (i = 0; i < 2; i++) {
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if (wl_display_roundtrip_queue (priv->display, priv->queue) < 0) {
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*error = g_error_new (g_quark_from_static_string ("GstWlDisplay"), 0,
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"Error communicating with the wayland display");
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g_object_unref (self);
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return NULL;
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}
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}
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/* verify we got all the required interfaces */
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#define VERIFY_INTERFACE_EXISTS(var, interface) \
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if (!priv->var) { \
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g_set_error (error, g_quark_from_static_string ("GstWlDisplay"), 0, \
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"Could not bind to " interface ". Either it is not implemented in " \
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"the compositor, or the implemented version doesn't match"); \
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g_object_unref (self); \
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return NULL; \
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}
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VERIFY_INTERFACE_EXISTS (compositor, "wl_compositor");
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VERIFY_INTERFACE_EXISTS (subcompositor, "wl_subcompositor");
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VERIFY_INTERFACE_EXISTS (shm, "wl_shm");
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#undef VERIFY_INTERFACE_EXISTS
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/* We make the viewporter optional even though it may cause bad display.
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* This is so one can test wayland display on older compositor or on
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* compositor that don't implement this extension. */
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if (!priv->viewporter) {
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||
|
g_warning ("Wayland compositor is missing the ability to scale, video "
|
||
|
"display may not work properly.");
|
||
|
}
|
||
|
|
||
|
if (!priv->dmabuf) {
|
||
|
g_warning ("Could not bind to zwp_linux_dmabuf_v1");
|
||
|
}
|
||
|
|
||
|
if (!priv->xdg_wm_base && !priv->fullscreen_shell) {
|
||
|
/* If wl_surface and wl_display are passed via GstContext
|
||
|
* xdg_shell and zwp_fullscreen_shell are not used.
|
||
|
* In this case is correct to continue.
|
||
|
*/
|
||
|
g_warning ("Could not bind to either xdg_wm_base or zwp_fullscreen_shell, "
|
||
|
"video display may not work properly.");
|
||
|
}
|
||
|
|
||
|
priv->thread = g_thread_try_new ("GstWlDisplay", gst_wl_display_thread_run,
|
||
|
self, &err);
|
||
|
if (err) {
|
||
|
g_propagate_prefixed_error (error, err,
|
||
|
"Failed to start thread for the display's events");
|
||
|
g_object_unref (self);
|
||
|
return NULL;
|
||
|
}
|
||
|
|
||
|
return self;
|
||
|
}
|
||
|
|
||
|
void
|
||
|
gst_wl_display_register_buffer (GstWlDisplay * self, gpointer gstmem,
|
||
|
gpointer wlbuffer)
|
||
|
{
|
||
|
GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
|
||
|
|
||
|
g_assert (!priv->shutting_down);
|
||
|
|
||
|
GST_TRACE_OBJECT (self, "registering GstWlBuffer %p to GstMem %p",
|
||
|
wlbuffer, gstmem);
|
||
|
|
||
|
g_mutex_lock (&priv->buffers_mutex);
|
||
|
g_hash_table_replace (priv->buffers, gstmem, wlbuffer);
|
||
|
g_mutex_unlock (&priv->buffers_mutex);
|
||
|
}
|
||
|
|
||
|
gpointer
|
||
|
gst_wl_display_lookup_buffer (GstWlDisplay * self, gpointer gstmem)
|
||
|
{
|
||
|
GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
|
||
|
gpointer wlbuffer;
|
||
|
|
||
|
g_mutex_lock (&priv->buffers_mutex);
|
||
|
wlbuffer = g_hash_table_lookup (priv->buffers, gstmem);
|
||
|
g_mutex_unlock (&priv->buffers_mutex);
|
||
|
return wlbuffer;
|
||
|
}
|
||
|
|
||
|
void
|
||
|
gst_wl_display_unregister_buffer (GstWlDisplay * self, gpointer gstmem)
|
||
|
{
|
||
|
GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
|
||
|
|
||
|
GST_TRACE_OBJECT (self, "unregistering GstWlBuffer owned by %p", gstmem);
|
||
|
|
||
|
g_mutex_lock (&priv->buffers_mutex);
|
||
|
if (G_LIKELY (!priv->shutting_down))
|
||
|
g_hash_table_remove (priv->buffers, gstmem);
|
||
|
g_mutex_unlock (&priv->buffers_mutex);
|
||
|
}
|
||
|
|
||
|
struct wl_display *
|
||
|
gst_wl_display_get_display (GstWlDisplay * self)
|
||
|
{
|
||
|
GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
|
||
|
|
||
|
return priv->display;
|
||
|
}
|
||
|
|
||
|
struct wl_event_queue *
|
||
|
gst_wl_display_get_event_queue (GstWlDisplay * self)
|
||
|
{
|
||
|
GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
|
||
|
|
||
|
return priv->queue;
|
||
|
}
|
||
|
|
||
|
struct wl_compositor *
|
||
|
gst_wl_display_get_compositor (GstWlDisplay * self)
|
||
|
{
|
||
|
GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
|
||
|
|
||
|
return priv->compositor;
|
||
|
}
|
||
|
|
||
|
struct wl_subcompositor *
|
||
|
gst_wl_display_get_subcompositor (GstWlDisplay * self)
|
||
|
{
|
||
|
GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
|
||
|
|
||
|
return priv->subcompositor;
|
||
|
}
|
||
|
|
||
|
struct xdg_wm_base *
|
||
|
gst_wl_display_get_xdg_wm_base (GstWlDisplay * self)
|
||
|
{
|
||
|
GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
|
||
|
|
||
|
return priv->xdg_wm_base;
|
||
|
}
|
||
|
|
||
|
struct zwp_fullscreen_shell_v1 *
|
||
|
gst_wl_display_get_fullscreen_shell_v1 (GstWlDisplay * self)
|
||
|
{
|
||
|
GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
|
||
|
|
||
|
return priv->fullscreen_shell;
|
||
|
}
|
||
|
|
||
|
struct wp_viewporter *
|
||
|
gst_wl_display_get_viewporter (GstWlDisplay * self)
|
||
|
{
|
||
|
GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
|
||
|
|
||
|
return priv->viewporter;
|
||
|
}
|
||
|
|
||
|
struct wl_shm *
|
||
|
gst_wl_display_get_shm (GstWlDisplay * self)
|
||
|
{
|
||
|
GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
|
||
|
|
||
|
return priv->shm;
|
||
|
}
|
||
|
|
||
|
GArray *
|
||
|
gst_wl_display_get_shm_formats (GstWlDisplay * self)
|
||
|
{
|
||
|
GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
|
||
|
|
||
|
return priv->shm_formats;
|
||
|
}
|
||
|
|
||
|
struct zwp_linux_dmabuf_v1 *
|
||
|
gst_wl_display_get_dmabuf_v1 (GstWlDisplay * self)
|
||
|
{
|
||
|
GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
|
||
|
|
||
|
return priv->dmabuf;
|
||
|
}
|
||
|
|
||
|
GArray *
|
||
|
gst_wl_display_get_dmabuf_formats (GstWlDisplay * self)
|
||
|
{
|
||
|
GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
|
||
|
|
||
|
return priv->dmabuf_formats;
|
||
|
}
|
||
|
|
||
|
gboolean
|
||
|
gst_wl_display_has_own_display (GstWlDisplay * self)
|
||
|
{
|
||
|
GstWlDisplayPrivate *priv = gst_wl_display_get_instance_private (self);
|
||
|
|
||
|
return priv->own_display;
|
||
|
}
|