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8c3e33d494
In preparation for the new element `GstGtkWaylandSink`, move reusable parts out of `GstWaylandSink` into the already exisiting but very barebone library. Notable changes include: - the `GstWaylandVideo` interface was dropped - support for `wl-shell` was dropped - lots of renaming in order to match established naming patterns - lots of code modernisations, reducing boilerplate - members were made private wherever possible Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2479>
280 lines
8 KiB
C
280 lines
8 KiB
C
/*
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* Copyright (C) 2014-2015 Collabora Ltd.
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* @author George Kiagiadakis <george.kiagiadakis@collabora.com>
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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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#include <gst/gst.h>
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#include <gtk/gtk.h>
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#include <gdk/gdk.h>
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#ifdef GDK_WINDOWING_WAYLAND
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#include <gdk/gdkwayland.h>
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#else
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#error "Wayland is not supported in GTK+"
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#endif
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#include <gst/video/videooverlay.h>
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#include <gst/wayland/wayland.h>
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static gboolean live = FALSE;
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static GOptionEntry entries[] = {
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{"live", 'l', 0, G_OPTION_ARG_NONE, &live, "Use a live source", NULL},
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{NULL}
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};
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typedef struct
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{
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GtkWidget *app_widget;
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GtkWidget *video_widget;
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GstElement *pipeline;
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GstVideoOverlay *overlay;
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gchar **argv;
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gint current_uri; /* index for argv */
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} DemoApp;
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static void
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on_about_to_finish (GstElement * playbin, DemoApp * d)
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{
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if (d->argv[++d->current_uri] == NULL)
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d->current_uri = 1;
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g_print ("Now playing %s\n", d->argv[d->current_uri]);
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g_object_set (playbin, "uri", d->argv[d->current_uri], NULL);
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}
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static void
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error_cb (GstBus * bus, GstMessage * msg, gpointer user_data)
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{
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DemoApp *d = user_data;
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gchar *debug = NULL;
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GError *err = NULL;
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gst_message_parse_error (msg, &err, &debug);
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g_print ("Error: %s\n", err->message);
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g_error_free (err);
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if (debug) {
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g_print ("Debug details: %s\n", debug);
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g_free (debug);
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}
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gst_element_set_state (d->pipeline, GST_STATE_NULL);
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}
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static GstBusSyncReply
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bus_sync_handler (GstBus * bus, GstMessage * message, gpointer user_data)
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{
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DemoApp *d = user_data;
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if (gst_is_wl_display_handle_need_context_message (message)) {
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GstContext *context;
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GdkDisplay *display;
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struct wl_display *display_handle;
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display = gtk_widget_get_display (d->video_widget);
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display_handle = gdk_wayland_display_get_wl_display (display);
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context = gst_wl_display_handle_context_new (display_handle);
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gst_element_set_context (GST_ELEMENT (GST_MESSAGE_SRC (message)), context);
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gst_context_unref (context);
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goto drop;
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} else if (gst_is_video_overlay_prepare_window_handle_message (message)) {
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GtkAllocation allocation;
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GdkWindow *window;
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struct wl_surface *window_handle;
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/* GST_MESSAGE_SRC (message) will be the overlay object that we have to
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* use. This may be waylandsink, but it may also be playbin. In the latter
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* case, we must make sure to use playbin instead of waylandsink, because
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* playbin resets the window handle and render_rectangle after restarting
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* playback and the actual window size is lost */
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d->overlay = GST_VIDEO_OVERLAY (GST_MESSAGE_SRC (message));
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gtk_widget_get_allocation (d->video_widget, &allocation);
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window = gtk_widget_get_window (d->video_widget);
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window_handle = gdk_wayland_window_get_wl_surface (window);
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g_print ("setting window handle and size (%d x %d)\n",
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allocation.width, allocation.height);
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gst_video_overlay_set_window_handle (d->overlay, (guintptr) window_handle);
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gst_video_overlay_set_render_rectangle (d->overlay, allocation.x,
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allocation.y, allocation.width, allocation.height);
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goto drop;
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}
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return GST_BUS_PASS;
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drop:
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gst_message_unref (message);
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return GST_BUS_DROP;
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}
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/* We use the "draw" callback to change the size of the sink
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* because the "configure-event" is only sent to top-level widgets. */
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static gboolean
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video_widget_draw_cb (GtkWidget * widget, cairo_t * cr, gpointer user_data)
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{
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DemoApp *d = user_data;
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GtkAllocation allocation;
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gtk_widget_get_allocation (widget, &allocation);
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g_print ("draw_cb x %d, y %d, w %d, h %d\n",
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allocation.x, allocation.y, allocation.width, allocation.height);
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if (d->overlay) {
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gst_video_overlay_set_render_rectangle (d->overlay, allocation.x,
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allocation.y, allocation.width, allocation.height);
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}
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/* There is no need to call gst_video_overlay_expose().
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* The wayland compositor can always re-draw the window
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* based on its last contents if necessary */
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return FALSE;
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}
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static void
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playing_clicked_cb (GtkButton * button, DemoApp * d)
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{
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gst_element_set_state (d->pipeline, GST_STATE_PLAYING);
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}
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static void
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paused_clicked_cb (GtkButton * button, DemoApp * d)
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{
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gst_element_set_state (d->pipeline, GST_STATE_PAUSED);
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}
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static void
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ready_clicked_cb (GtkButton * button, DemoApp * d)
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{
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gst_element_set_state (d->pipeline, GST_STATE_READY);
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}
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static void
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null_clicked_cb (GtkButton * button, DemoApp * d)
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{
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gst_element_set_state (d->pipeline, GST_STATE_NULL);
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}
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static void
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build_window (DemoApp * d)
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{
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GtkBuilder *builder;
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GtkWidget *button;
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GError *error = NULL;
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builder = gtk_builder_new ();
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if (!gtk_builder_add_from_file (builder, "window.ui", &error)) {
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g_error ("Failed to load window.ui: %s", error->message);
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g_error_free (error);
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goto exit;
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}
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d->app_widget = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
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g_object_ref (d->app_widget);
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g_signal_connect (d->app_widget, "destroy", G_CALLBACK (gtk_main_quit), NULL);
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d->video_widget = GTK_WIDGET (gtk_builder_get_object (builder, "videoarea"));
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g_signal_connect (d->video_widget, "draw",
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G_CALLBACK (video_widget_draw_cb), d);
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button = GTK_WIDGET (gtk_builder_get_object (builder, "button_playing"));
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g_signal_connect (button, "clicked", G_CALLBACK (playing_clicked_cb), d);
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button = GTK_WIDGET (gtk_builder_get_object (builder, "button_paused"));
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g_signal_connect (button, "clicked", G_CALLBACK (paused_clicked_cb), d);
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button = GTK_WIDGET (gtk_builder_get_object (builder, "button_ready"));
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g_signal_connect (button, "clicked", G_CALLBACK (ready_clicked_cb), d);
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button = GTK_WIDGET (gtk_builder_get_object (builder, "button_null"));
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g_signal_connect (button, "clicked", G_CALLBACK (null_clicked_cb), d);
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gtk_widget_show_all (d->app_widget);
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exit:
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g_object_unref (builder);
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}
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int
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main (int argc, char **argv)
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{
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DemoApp *d;
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GOptionContext *context;
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GstBus *bus;
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GError *error = NULL;
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gtk_init (&argc, &argv);
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gst_init (&argc, &argv);
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context = g_option_context_new ("- waylandsink gtk demo");
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g_option_context_add_main_entries (context, entries, NULL);
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if (!g_option_context_parse (context, &argc, &argv, &error)) {
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g_printerr ("option parsing failed: %s\n", error->message);
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return 1;
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}
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d = g_slice_new0 (DemoApp);
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build_window (d);
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if (argc > 1) {
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d->argv = argv;
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d->current_uri = 1;
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d->pipeline = gst_parse_launch ("playbin video-sink=waylandsink", NULL);
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g_object_set (d->pipeline, "uri", argv[d->current_uri], NULL);
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/* enable looping */
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g_signal_connect (d->pipeline, "about-to-finish",
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G_CALLBACK (on_about_to_finish), d);
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} else {
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if (live) {
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d->pipeline = gst_parse_launch ("videotestsrc pattern=18 "
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"background-color=0xFF0062FF is-live=true ! waylandsink", NULL);
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} else {
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d->pipeline = gst_parse_launch ("videotestsrc pattern=18 "
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"background-color=0xFF0062FF ! waylandsink", NULL);
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}
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}
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bus = gst_pipeline_get_bus (GST_PIPELINE (d->pipeline));
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gst_bus_add_signal_watch (bus);
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g_signal_connect (bus, "message::error", G_CALLBACK (error_cb), d);
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gst_bus_set_sync_handler (bus, bus_sync_handler, d, NULL);
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gst_object_unref (bus);
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gst_element_set_state (d->pipeline, GST_STATE_PLAYING);
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gtk_main ();
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gst_element_set_state (d->pipeline, GST_STATE_NULL);
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gst_object_unref (d->pipeline);
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g_object_unref (d->app_widget);
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g_slice_free (DemoApp, d);
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return 0;
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}
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