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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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examples/wayland: Add wayland multi-thread client example
This is for testing race condition with multi-thread wayland client environment. The race condition will be resolved with wayland proxy wrapper API when handling event queue.
This commit is contained in:
Wonchul Lee
Nicolas Dufresne
parent
8766a45ee4
commit
c082634d16
3 changed files with 242 additions and 7 deletions
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@ -1,5 +1,7 @@
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noinst_PROGRAMS = gtkwaylandsink
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GST_WAYLANDSINK_UI_FILES = window.ui
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if HAVE_GTK3_WAYLAND
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GST_WAYLANDSINK_GTK_EXAMPLE = gtkwaylandsink
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gtkwaylandsink_SOURCES = main.c
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gtkwaylandsink_CFLAGS=-I$(top_srcdir)/gst-libs -I$(top_builddir)/gst-libs \
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@ -7,5 +9,17 @@ gtkwaylandsink_CFLAGS=-I$(top_srcdir)/gst-libs -I$(top_builddir)/gst-libs \
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gtkwaylandsink_LDADD=$(GTK3_LIBS) $(GST_PLUGINS_BASE_LIBS) $(GST_LIBS) \
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-lgstvideo-$(GST_API_VERSION) \
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$(top_builddir)/gst-libs/gst/wayland/libgstwayland-$(GST_API_VERSION).la
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else
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GST_WAYLANDSINK_GTK_EXAMPLE =
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endif
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EXTRA_DIST = window.ui
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wayland_threads_SOURCES = wayland-threads.c
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wayland_threads_CFLAGS=-I$(top_srcdir)/gst-libs -I$(top_builddir)/gst-libs \
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$(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS) $(WAYLAND_CFLAGS)
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wayland_threads_LDADD=$(GST_PLUGINS_BASE_LIBS) $(GST_LIBS) $(WAYLAND_LIBS)\
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-lgstvideo-$(GST_API_VERSION) \
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$(top_builddir)/gst-libs/gst/wayland/libgstwayland-$(GST_API_VERSION).la
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noinst_PROGRAMS = $(GST_WAYLANDSINK_GTK_EXAMPLE) wayland_threads
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EXTRA_DIST = $(GST_WAYLANDSINK_UI_FILES)
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@ -1,13 +1,22 @@
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gtk_dep = dependency('gtk+-3.0', required : get_option('examples'))
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gtk_wayland_dep = dependency('gtk+-wayland-3.0', required : get_option('examples'))
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if use_wayland and gtk_dep.found() and gtk_wayland_dep.found()
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executable('waylandsink',
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'main.c',
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extra_files: ['window.ui'],
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if use_wayland
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if gtk_dep.found() and gtk_wayland_dep.found()
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executable('waylandsink',
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'main.c',
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extra_files: ['window.ui'],
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install: false,
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include_directories : [configinc],
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dependencies : [gtk_dep, gtk_wayland_dep, gst_dep, gstwayland_dep],
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c_args : ['-DHAVE_CONFIG_H=1', '-DGST_USE_UNSTABLE_API=1'],
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)
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endif
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executable('wayland_threads',
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'wayland-threads.c',
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install: false,
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include_directories : [configinc],
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dependencies : [gtk_dep, gtk_wayland_dep, gst_dep, gstwayland_dep],
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dependencies : [gst_dep, gstwayland_dep, wl_client_dep],
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c_args : ['-DHAVE_CONFIG_H=1', '-DGST_USE_UNSTABLE_API=1'],
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)
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endif
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212
tests/examples/waylandsink/wayland-threads.c
Normal file
212
tests/examples/waylandsink/wayland-threads.c
Normal file
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@ -0,0 +1,212 @@
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/*
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* Copyright (C) 2018 LG Electronics
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* @author Wonchul Lee <w.lee@lge.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 <gst/video/videooverlay.h>
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#include <gst/wayland/wayland.h>
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static gint retry = 100;
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typedef struct
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{
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struct wl_display *display;
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struct wl_display *display_wrapper;
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struct wl_registry *registry;
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struct wl_compositor *compositor;
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struct wl_event_queue *queue;
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GThread *thread;
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GstElement *pipeline1;
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GstElement *pipeline2;
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GstVideoOverlay *overlay;
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GMainLoop *loop;
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} App;
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static gboolean
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message_cb (GstBus * bus, GstMessage * message, gpointer user_data)
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{
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App *app = user_data;
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switch (GST_MESSAGE_TYPE (message)) {
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case GST_MESSAGE_ERROR:{
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GError *err = NULL;
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gchar *debug = NULL;
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gst_message_parse_error (message, &err, &debug);
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gst_printerrln ("Error message received: %s", err->message);
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gst_printerrln ("Debug info: %s", debug);
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g_error_free (err);
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g_free (debug);
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}
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case GST_MESSAGE_EOS:
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if (retry <= 0)
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g_main_loop_quit (app->loop);
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gst_element_set_state (GST_ELEMENT (GST_MESSAGE_SRC (message)),
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GST_STATE_NULL);
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gst_element_set_state (GST_ELEMENT (GST_MESSAGE_SRC (message)),
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GST_STATE_PLAYING);
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retry--;
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break;
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default:
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break;
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}
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return TRUE;
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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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App *app = user_data;
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if (gst_is_wayland_display_handle_need_context_message (message)) {
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GstContext *context;
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context = gst_wayland_display_handle_context_new (app->display);
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gst_element_set_context (GST_ELEMENT (GST_MESSAGE_SRC (message)), context);
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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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static void
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registry_handle (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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App *app = data;
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if (g_strcmp0 (interface, "wl_compositor") == 0) {
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app->compositor =
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wl_registry_bind (app->registry, id, &wl_compositor_interface,
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MIN (version, 3));
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}
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}
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static const struct wl_registry_listener registry_listener = {
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registry_handle
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};
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static gpointer
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wl_main_thread_run (gpointer data)
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{
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App *app = data;
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while (wl_display_dispatch_queue (app->display, app->queue) != -1)
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return NULL;
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return NULL;
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}
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static GstElement *
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build_pipeline (App * app, gint num_buffers)
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{
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GstElement *pipeline;
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GstBus *bus;
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gchar *str;
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str =
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g_strdup_printf ("videotestsrc num-buffers=%d ! waylandsink",
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num_buffers);
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pipeline = gst_parse_launch (str, NULL);
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g_free (str);
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bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
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gst_bus_add_signal_watch (bus);
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g_signal_connect (bus, "message", G_CALLBACK (message_cb), app);
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gst_bus_set_sync_handler (bus, bus_sync_handler, app, NULL);
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gst_object_unref (bus);
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return pipeline;
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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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App *app;
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GError *error = NULL;
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gst_init (&argc, &argv);
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app = g_slice_new0 (App);
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app->loop = g_main_loop_new (NULL, FALSE);
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app->display = wl_display_connect (NULL);
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if (!app->display)
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goto done;
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app->display_wrapper = wl_proxy_create_wrapper (app->display);
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app->queue = wl_display_create_queue (app->display);
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wl_proxy_set_queue ((struct wl_proxy *) app->display_wrapper, app->queue);
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app->registry = wl_display_get_registry (app->display_wrapper);
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wl_registry_add_listener (app->registry, ®istry_listener, app);
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wl_display_roundtrip_queue (app->display, app->queue);
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wl_display_roundtrip_queue (app->display, app->queue);
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if (!app->compositor) {
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g_set_error (&error, g_quark_from_static_string ("waylandMultiThreads"), 0,
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"Could not bind to wl_compositor interface");
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goto done;
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}
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app->thread =
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g_thread_try_new ("WlMainThread", wl_main_thread_run, app, &error);
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if (error) {
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gst_printerrln ("error: %s", error->message);
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g_error_free (error);
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goto done;
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}
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app->pipeline1 = build_pipeline (app, 30);
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app->pipeline2 = build_pipeline (app, 40);
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gst_element_set_state (app->pipeline1, GST_STATE_PLAYING);
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gst_element_set_state (app->pipeline2, GST_STATE_PLAYING);
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g_main_loop_run (app->loop);
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gst_element_set_state (app->pipeline1, GST_STATE_NULL);
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gst_element_set_state (app->pipeline2, GST_STATE_NULL);
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gst_object_unref (app->pipeline1);
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gst_object_unref (app->pipeline2);
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done:
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if (app->thread)
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g_thread_join (app->thread);
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if (app->compositor)
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wl_compositor_destroy (app->compositor);
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if (app->registry)
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wl_registry_destroy (app->registry);
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if (app->queue)
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wl_event_queue_destroy (app->queue);
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if (app->display_wrapper)
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wl_proxy_wrapper_destroy (app->display_wrapper);
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if (app->display) {
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wl_display_flush (app->display);
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wl_display_disconnect (app->display);
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}
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g_slice_free (App, app);
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return 0;
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}
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