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Add remote desktop and screen cast functionality

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This commit adds basic screen casting and remote desktoping
functionalty. This works by exposing two D-Bus API services:
org.gnome.Mutter.ScreenCast and org.gnome.Mutter.RemoteDesktop.

The remote desktop API is used to create remote desktop sessions. For
each session, a D-Bus object is created, and an application can manage
the session by sending messages to the session object. A remote desktop
session the user to emit input events using the D-Bus methods on the
session object. To get framebuffer content, the application should
create an associated screen cast session.

The screen cast API is used to create screen cast sessions. One can so
far either create stand-alone screen cast sessions, or a screen cast
session associated with a remote desktop session. A remote desktop
associated screen cast session is managed by the remote desktop session.

So far only remote desktop managed screen cast sessions are implemented.

Each screen cast session may have one or more streams. A screen cast
stream is a stream of buffers of some part of the compositor content.
So far API exists for creating streams of monitors and windows, but
only monitor streams are implemented.

When a screen cast session is started, the one PipeWire stream is
created for each screen cast stream created for the session. When this
has happened, a PipeWireStreamAdded signal is emitted on the stream
object, passing a unique identifier. The application may use this
identifier to find the associated stream being advertised by the
PipeWire daemon.

The remote desktop and screen cast functionality must be explicitly be
enabled at ./configure time by passing --enable-remote-desktop to
./configure. Doing this will build both screen cast and remote desktop
support.

To actually enable the screen casting and remote desktop, the user must
enable the experimental feature. See
org.gnome.mutter.experimental-features.

https://bugzilla.gnome.org/show_bug.cgi?id=784199
This commit is contained in:
Jonas Ådahl 2017-06-21 14:23:44 +08:00
parent 38235bc145
commit 97f2c7c161
28 changed files with 3462 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
.gitignore vendored
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@ -71,6 +71,8 @@ src/stamp-meta-enum-types.h
src/meta-dbus-display-config.[ch] src/meta-dbus-display-config.[ch]
src/meta-dbus-idle-monitor.[ch] src/meta-dbus-idle-monitor.[ch]
src/meta-dbus-login1.[ch] src/meta-dbus-login1.[ch]
src/meta-dbus-remote-desktop.[ch]
src/meta-dbus-screen-cast.[ch]
src/gtk-primary-selection-protocol.c src/gtk-primary-selection-protocol.c
src/gtk-primary-selection-server-protocol.h src/gtk-primary-selection-server-protocol.h
src/gtk-shell-protocol.c src/gtk-shell-protocol.c

12
configure.ac
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@ -238,6 +238,17 @@ else
fi fi
fi fi
AC_ARG_ENABLE(remote-desktop,
AS_HELP_STRING([--enable-remote-desktop], [enable support for remote desktop and screen cast]),
enable_remote_desktop=yes,
enable_remote_desktop=no
)
AS_IF([test "$enable_remote_desktop" = "yes"], [
MUTTER_PC_MODULES="$MUTTER_PC_MODULES libpipewire-0.1 >= 0.1.4"
AC_DEFINE([HAVE_REMOTE_DESKTOP],[1], [Defined if EGLDevice support is enabled])
])
AM_CONDITIONAL([HAVE_REMOTE_DESKTOP],[test "$enable_remote_desktop" = "yes"])
INTROSPECTION_VERSION=0.9.5 INTROSPECTION_VERSION=0.9.5
GOBJECT_INTROSPECTION_CHECK([$INTROSPECTION_VERSION]) GOBJECT_INTROSPECTION_CHECK([$INTROSPECTION_VERSION])
@ -513,6 +524,7 @@ mutter-$VERSION
Wayland: ${have_wayland} Wayland: ${have_wayland}
Native (KMS) backend: ${have_native_backend} Native (KMS) backend: ${have_native_backend}
EGLDevice: ${enable_egl_device} EGLDevice: ${enable_egl_device}
Remote desktop: ${enable_remote_desktop}
" "

4
data/org.gnome.mutter.gschema.xml.in
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@ -120,6 +120,10 @@
framebuffers instead of window content, framebuffers instead of window content,
to manage HiDPI monitors. Does not to manage HiDPI monitors. Does not
require a restart. require a restart.
• “remote-desktop” — enables remote desktop support. To support
remote desktop with screen sharing,
"screen-cast" must also be enabled.
• “screen-cast” — enables screen cast support.
</description> </description>
</key> </key>

52
src/Makefile.am
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@ -53,6 +53,13 @@ mutter_built_sources = \
meta-enum-types.c \ meta-enum-types.c \
$(NULL) $(NULL)
if HAVE_REMOTE_DESKTOP
mutter_built_sources += \
$(dbus_remote_desktop_built_sources) \
$(dbus_screen_cast_built_sources) \
$(NULL)
endif
if HAVE_WAYLAND if HAVE_WAYLAND
mutter_built_sources += \ mutter_built_sources += \
pointer-gestures-unstable-v1-protocol.c \ pointer-gestures-unstable-v1-protocol.c \
@ -313,6 +320,29 @@ libmutter_@LIBMUTTER_API_VERSION@_la_SOURCES = \
x11/mutter-Xatomtype.h \ x11/mutter-Xatomtype.h \
$(NULL) $(NULL)
if HAVE_REMOTE_DESKTOP
libmutter_@LIBMUTTER_API_VERSION@_la_SOURCES += \
backends/meta-dbus-session-watcher.c \
backends/meta-dbus-session-watcher.h \
backends/meta-remote-desktop.c \
backends/meta-remote-desktop.h \
backends/meta-remote-desktop-session.c \
backends/meta-remote-desktop-session.h \
backends/meta-screen-cast.c \
backends/meta-screen-cast.h \
backends/meta-screen-cast-monitor-stream.c \
backends/meta-screen-cast-monitor-stream.h \
backends/meta-screen-cast-monitor-stream-src.c \
backends/meta-screen-cast-monitor-stream-src.h \
backends/meta-screen-cast-session.c \
backends/meta-screen-cast-session.h \
backends/meta-screen-cast-stream.c \
backends/meta-screen-cast-stream.h \
backends/meta-screen-cast-stream-src.c \
backends/meta-screen-cast-stream-src.h \
$(NULL)
endif
if HAVE_WAYLAND if HAVE_WAYLAND
libmutter_@LIBMUTTER_API_VERSION@_la_SOURCES += \ libmutter_@LIBMUTTER_API_VERSION@_la_SOURCES += \
compositor/meta-surface-actor-wayland.c \ compositor/meta-surface-actor-wayland.c \
@ -581,6 +611,8 @@ EXTRA_DIST += \
org.freedesktop.login1.xml \ org.freedesktop.login1.xml \
org.gnome.Mutter.DisplayConfig.xml \ org.gnome.Mutter.DisplayConfig.xml \
org.gnome.Mutter.IdleMonitor.xml \ org.gnome.Mutter.IdleMonitor.xml \
org.gnome.Mutter.RemoteDesktop.xml \
org.gnome.Mutter.ScreenCast.xml \
backends/native/gen-default-modes.py \ backends/native/gen-default-modes.py \
$(NULL) $(NULL)
@ -629,6 +661,26 @@ $(dbus_idle_built_sources) : Makefile.am org.gnome.Mutter.IdleMonitor.xml
--c-generate-autocleanup all \ --c-generate-autocleanup all \
$(srcdir)/org.gnome.Mutter.IdleMonitor.xml $(srcdir)/org.gnome.Mutter.IdleMonitor.xml
if HAVE_REMOTE_DESKTOP
dbus_remote_desktop_built_sources = meta-dbus-remote-desktop.c meta-dbus-remote-desktop.h
$(dbus_remote_desktop_built_sources) : Makefile.am org.gnome.Mutter.RemoteDesktop.xml
$(AM_V_GEN)gdbus-codegen \
--interface-prefix org.gnome.Mutter \
--c-namespace MetaDBus \
--generate-c-code meta-dbus-remote-desktop \
$(srcdir)/org.gnome.Mutter.RemoteDesktop.xml
dbus_screen_cast_built_sources = meta-dbus-screen-cast.c meta-dbus-screen-cast.h
$(dbus_screen_cast_built_sources) : Makefile.am org.gnome.Mutter.ScreenCast.xml
$(AM_V_GEN)gdbus-codegen \
--interface-prefix org.gnome.Mutter \
--c-namespace MetaDBus \
--generate-c-code meta-dbus-screen-cast \
$(srcdir)/org.gnome.Mutter.ScreenCast.xml
endif
dbus_login1_built_sources = meta-dbus-login1.c meta-dbus-login1.h dbus_login1_built_sources = meta-dbus-login1.c meta-dbus-login1.h
$(dbus_login1_built_sources) : Makefile.am org.freedesktop.login1.xml $(dbus_login1_built_sources) : Makefile.am org.freedesktop.login1.xml

7
src/backends/meta-backend-private.h
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@ -38,6 +38,9 @@
#include "meta-input-settings-private.h" #include "meta-input-settings-private.h"
#include "backends/meta-egl.h" #include "backends/meta-egl.h"
#include "backends/meta-pointer-constraint.h" #include "backends/meta-pointer-constraint.h"
#ifdef HAVE_REMOTE_DESKTOP
#include "backends/meta-remote-desktop.h"
#endif
#include "backends/meta-renderer.h" #include "backends/meta-renderer.h"
#include "backends/meta-settings-private.h" #include "backends/meta-settings-private.h"
#include "core/util-private.h" #include "core/util-private.h"
@ -120,6 +123,10 @@ MetaRenderer * meta_backend_get_renderer (MetaBackend *backend);
MetaEgl * meta_backend_get_egl (MetaBackend *backend); MetaEgl * meta_backend_get_egl (MetaBackend *backend);
MetaSettings * meta_backend_get_settings (MetaBackend *backend); MetaSettings * meta_backend_get_settings (MetaBackend *backend);
#ifdef HAVE_REMOTE_DESKTOP
MetaRemoteDesktop * meta_backend_get_remote_desktop (MetaBackend *backend);
#endif
gboolean meta_backend_grab_device (MetaBackend *backend, gboolean meta_backend_grab_device (MetaBackend *backend,
int device_id, int device_id,
uint32_t timestamp); uint32_t timestamp);

84
src/backends/meta-backend.c
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@ -29,13 +29,19 @@
#include <clutter/clutter-mutter.h> #include <clutter/clutter-mutter.h>
#include <meta/meta-backend.h> #include <meta/meta-backend.h>
#include <meta/main.h> #include <meta/main.h>
#include <meta/util.h>
#include "meta-backend-private.h" #include "meta-backend-private.h"
#include "meta-input-settings-private.h" #include "meta-input-settings-private.h"
#include "backends/x11/meta-backend-x11.h" #include "backends/x11/meta-backend-x11.h"
#include "meta-cursor-tracker-private.h" #include "meta-cursor-tracker-private.h"
#include "meta-stage.h" #include "meta-stage.h"
#ifdef HAVE_REMOTE_DESKTOP
#include "backends/meta-dbus-session-watcher.h"
#include "backends/meta-screen-cast.h"
#include "backends/meta-remote-desktop.h"
#endif
#ifdef HAVE_NATIVE_BACKEND #ifdef HAVE_NATIVE_BACKEND
#include "backends/native/meta-backend-native.h" #include "backends/native/meta-backend-native.h"
#endif #endif
@ -85,6 +91,11 @@ struct _MetaBackendPrivate
MetaRenderer *renderer; MetaRenderer *renderer;
MetaEgl *egl; MetaEgl *egl;
MetaSettings *settings; MetaSettings *settings;
#ifdef HAVE_REMOTE_DESKTOP
MetaDbusSessionWatcher *dbus_session_watcher;
MetaScreenCast *screen_cast;
MetaRemoteDesktop *remote_desktop;
#endif
ClutterBackend *clutter_backend; ClutterBackend *clutter_backend;
ClutterActor *stage; ClutterActor *stage;
@ -117,6 +128,11 @@ meta_backend_finalize (GObject *object)
g_clear_object (&priv->monitor_manager); g_clear_object (&priv->monitor_manager);
g_clear_object (&priv->orientation_manager); g_clear_object (&priv->orientation_manager);
g_clear_object (&priv->input_settings); g_clear_object (&priv->input_settings);
#ifdef HAVE_REMOTE_DESKTOP
g_clear_object (&priv->remote_desktop);
g_clear_object (&priv->screen_cast);
g_clear_object (&priv->dbus_session_watcher);
#endif
if (priv->device_update_idle_id) if (priv->device_update_idle_id)
g_source_remove (priv->device_update_idle_id); g_source_remove (priv->device_update_idle_id);
@ -387,6 +403,28 @@ meta_backend_create_input_settings (MetaBackend *backend)
return META_BACKEND_GET_CLASS (backend)->create_input_settings (backend); return META_BACKEND_GET_CLASS (backend)->create_input_settings (backend);
} }
#ifdef HAVE_REMOTE_DESKTOP
static gboolean
is_screen_cast_enabled (MetaBackend *backend)
{
MetaSettings *settings = meta_backend_get_settings (backend);
return meta_settings_is_experimental_feature_enabled (
settings,
META_EXPERIMENTAL_FEATURE_SCREEN_CAST);
}
static gboolean
is_remote_desktop_enabled (MetaBackend *backend)
{
MetaSettings *settings = meta_backend_get_settings (backend);
return meta_settings_is_experimental_feature_enabled (
settings,
META_EXPERIMENTAL_FEATURE_REMOTE_DESKTOP);
}
#endif /* HAVE_REMOTE_DESKTOP */
static void static void
meta_backend_real_post_init (MetaBackend *backend) meta_backend_real_post_init (MetaBackend *backend)
{ {
@ -419,6 +457,14 @@ meta_backend_real_post_init (MetaBackend *backend)
priv->input_settings = meta_backend_create_input_settings (backend); priv->input_settings = meta_backend_create_input_settings (backend);
center_pointer (backend); center_pointer (backend);
#ifdef HAVE_REMOTE_DESKTOP
priv->dbus_session_watcher = g_object_new (META_TYPE_DBUS_SESSION_WATCHER, NULL);
if (is_screen_cast_enabled (backend))
priv->screen_cast = meta_screen_cast_new (priv->dbus_session_watcher);
if (is_remote_desktop_enabled (backend))
priv->remote_desktop = meta_remote_desktop_new (priv->dbus_session_watcher);
#endif /* HAVE_REMOTE_DESKTOP */
} }
static MetaCursorRenderer * static MetaCursorRenderer *
@ -503,6 +549,26 @@ meta_backend_class_init (MetaBackendClass *klass)
stage_views_disabled = g_strcmp0 (mutter_stage_views, "0") == 0; stage_views_disabled = g_strcmp0 (mutter_stage_views, "0") == 0;
} }
static void
experimental_features_changed (MetaSettings *settings,
MetaExperimentalFeature old_experimental_features,
MetaBackend *backend)
{
#ifdef HAVE_REMOTE_DESKTOP
MetaBackendPrivate *priv = meta_backend_get_instance_private (backend);
if (is_screen_cast_enabled (backend) && !priv->screen_cast)
priv->screen_cast = meta_screen_cast_new (priv->dbus_session_watcher);
else if (!is_screen_cast_enabled (backend))
g_clear_object (&priv->screen_cast);
if (is_remote_desktop_enabled (backend) && !priv->remote_desktop)
priv->remote_desktop = meta_remote_desktop_new (priv->dbus_session_watcher);
else if (!is_remote_desktop_enabled (backend))
g_clear_object (&priv->remote_desktop);
#endif /* HAVE_REMOTE_DESKTOP */
}
static gboolean static gboolean
meta_backend_initable_init (GInitable *initable, meta_backend_initable_init (GInitable *initable,
GCancellable *cancellable, GCancellable *cancellable,
@ -512,6 +578,9 @@ meta_backend_initable_init (GInitable *initable,
MetaBackendPrivate *priv = meta_backend_get_instance_private (backend); MetaBackendPrivate *priv = meta_backend_get_instance_private (backend);
priv->settings = meta_settings_new (backend); priv->settings = meta_settings_new (backend);
g_signal_connect (priv->settings, "experimental-features-changed",
G_CALLBACK (experimental_features_changed),
backend);
priv->egl = g_object_new (META_TYPE_EGL, NULL); priv->egl = g_object_new (META_TYPE_EGL, NULL);
@ -641,6 +710,19 @@ meta_backend_get_settings (MetaBackend *backend)
return priv->settings; return priv->settings;
} }
#ifdef HAVE_REMOTE_DESKTOP
/**
* meta_backend_get_remote_desktop: (skip)
*/
MetaRemoteDesktop *
meta_backend_get_remote_desktop (MetaBackend *backend)
{
MetaBackendPrivate *priv = meta_backend_get_instance_private (backend);
return priv->remote_desktop;
}
#endif /* HAVE_REMOTE_DESKTOP */
/** /**
* meta_backend_grab_device: (skip) * meta_backend_grab_device: (skip)
*/ */

235
src/backends/meta-dbus-session-watcher.c Normal file
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@ -0,0 +1,235 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2015-2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include "config.h"
#include "backends/meta-dbus-session-watcher.h"
#include <gio/gio.h>
enum
{
SESSION_SIGNAL_SESSION_CLOSED,
N_SESSION_SIGNALS
};
static guint session_signals[N_SESSION_SIGNALS];
G_DEFINE_INTERFACE (MetaDbusSession, meta_dbus_session, G_TYPE_OBJECT)
struct _MetaDbusSessionWatcher
{
GObject parent;
GHashTable *clients;
};
G_DEFINE_TYPE (MetaDbusSessionWatcher,
meta_dbus_session_watcher,
G_TYPE_OBJECT)
typedef struct _MetaDbusSessionClient
{
MetaDbusSessionWatcher *session_watcher;
MetaDbusSession *session;
char *dbus_name;
guint name_watcher_id;
GList *sessions;
} MetaDbusSessionClient;
static void
meta_dbus_session_client_vanished (MetaDbusSession *session)
{
META_DBUS_SESSION_GET_IFACE (session)->client_vanished (session);
}
static void
meta_dbus_session_client_destroy (MetaDbusSessionClient *client)
{
while (TRUE)
{
GList *l;
MetaDbusSession *session;
l = client->sessions;
if (!l)
break;
session = l->data;
/*
* This will invoke on_session_closed which removes the session from the
* list.
*/
meta_dbus_session_client_vanished (session);
}
if (client->name_watcher_id)
g_bus_unwatch_name (client->name_watcher_id);
g_free (client->dbus_name);
g_free (client);
}
static void
meta_dbus_session_watcher_destroy_client (MetaDbusSessionWatcher *session_watcher,
MetaDbusSessionClient *client)
{
g_hash_table_remove (session_watcher->clients, client->dbus_name);
}
static void
name_vanished_callback (GDBusConnection *connection,
const char *name,
gpointer user_data)
{
MetaDbusSessionClient *client = user_data;
g_warning ("D-Bus client with active sessions vanished");
client->name_watcher_id = 0;
meta_dbus_session_watcher_destroy_client (client->session_watcher, client);
}
static MetaDbusSessionClient *
meta_dbus_session_client_new (MetaDbusSessionWatcher *session_watcher,
MetaDbusSession *session,
const char *dbus_name)
{
GDBusInterfaceSkeleton *interface_skeleton =
G_DBUS_INTERFACE_SKELETON (session);
GDBusConnection *connection =
g_dbus_interface_skeleton_get_connection (interface_skeleton);
MetaDbusSessionClient *client;
client = g_new0 (MetaDbusSessionClient, 1);
client->session_watcher = session_watcher;
client->session = session;
client->dbus_name = g_strdup (dbus_name);
client->name_watcher_id =
g_bus_watch_name_on_connection (connection,
dbus_name,
G_BUS_NAME_WATCHER_FLAGS_NONE,
NULL,
name_vanished_callback,
client,
NULL);
return client;
}
static void
on_session_closed (MetaDbusSession *session,
MetaDbusSessionClient *client)
{
client->sessions = g_list_remove (client->sessions, session);
if (!client->sessions)
meta_dbus_session_watcher_destroy_client (client->session_watcher, client);
}
static void
meta_dbus_session_client_add_session (MetaDbusSessionClient *client,
MetaDbusSession *session)
{
client->sessions = g_list_append (client->sessions, session);
g_signal_connect (session, "session-closed",
G_CALLBACK (on_session_closed),
client);
}
static MetaDbusSessionClient *
meta_dbus_session_watcher_get_client (MetaDbusSessionWatcher *session_watcher,
const char *dbus_name)
{
return g_hash_table_lookup (session_watcher->clients, dbus_name);
}
void
meta_dbus_session_watcher_watch_session (MetaDbusSessionWatcher *session_watcher,
const char *client_dbus_name,
MetaDbusSession *session)
{
MetaDbusSessionClient *client;
client = meta_dbus_session_watcher_get_client (session_watcher,
client_dbus_name);
if (!client)
{
client = meta_dbus_session_client_new (session_watcher,
session,
client_dbus_name);
g_hash_table_insert (session_watcher->clients,
g_strdup (client_dbus_name),
client);
}
meta_dbus_session_client_add_session (client, session);
}
void
meta_dbus_session_notify_closed (MetaDbusSession *session)
{
g_signal_emit (session, session_signals[SESSION_SIGNAL_SESSION_CLOSED], 0);
}
static void
meta_dbus_session_default_init (MetaDbusSessionInterface *iface)
{
session_signals[SESSION_SIGNAL_SESSION_CLOSED] =
g_signal_new ("session-closed",
G_TYPE_FROM_INTERFACE (iface),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 0);
}
static void
meta_dbus_session_watcher_finalize (GObject *object)
{
MetaDbusSessionWatcher *session_watcher = META_DBUS_SESSION_WATCHER (object);
g_hash_table_destroy (session_watcher->clients);
}
static void
meta_dbus_session_watcher_init (MetaDbusSessionWatcher *session_watcher)
{
session_watcher->clients =
g_hash_table_new_full (g_str_hash,
g_str_equal,
g_free,
(GDestroyNotify) meta_dbus_session_client_destroy);
}
static void
meta_dbus_session_watcher_class_init (MetaDbusSessionWatcherClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = meta_dbus_session_watcher_finalize;
}

52
src/backends/meta-dbus-session-watcher.h Normal file
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@ -0,0 +1,52 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#ifndef META_DBUS_SESSION_WATCHER_H
#define META_DBUS_SESSION_WATCHER_H
#include <glib-object.h>
#define META_TYPE_DBUS_SESSION (meta_dbus_session_get_type ())
G_DECLARE_INTERFACE (MetaDbusSession, meta_dbus_session,
META, DBUS_SESSION,
GObject)
struct _MetaDbusSessionInterface
{
GTypeInterface parent_iface;
void (* client_vanished) (MetaDbusSession *session);
};
#define META_TYPE_DBUS_SESSION_WATCHER (meta_dbus_session_watcher_get_type ())
G_DECLARE_FINAL_TYPE (MetaDbusSessionWatcher,
meta_dbus_session_watcher,
META, DBUS_SESSION_WATCHER,
GObject)
void meta_dbus_session_watcher_watch_session (MetaDbusSessionWatcher *session_watcher,
const char *client_dbus_name,
MetaDbusSession *session);
void meta_dbus_session_notify_closed (MetaDbusSession *session);
#endif /* META_DBUS_SESSION_WATCHER_H */

444
src/backends/meta-remote-desktop-session.c Normal file
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@ -0,0 +1,444 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2015-2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include "config.h"
#include "backends/meta-remote-desktop-session.h"
#include <linux/input.h>
#include <xkbcommon/xkbcommon.h>
#include "backends/meta-dbus-session-watcher.h"
#include "backends/meta-screen-cast-session.h"
#include "backends/native/meta-backend-native.h"
#include "backends/x11/meta-backend-x11.h"
#include "cogl/cogl.h"
#include "meta/meta-backend.h"
#include "meta/errors.h"
#include "meta-dbus-remote-desktop.h"
#define META_REMOTE_DESKTOP_SESSION_DBUS_PATH "/org/gnome/Mutter/RemoteDesktop/Session"
struct _MetaRemoteDesktopSession
{
MetaDBusRemoteDesktopSessionSkeleton parent;
char *session_id;
char *object_path;
MetaScreenCastSession *screen_cast_session;
gulong screen_cast_session_closed_handler_id;
ClutterVirtualInputDevice *virtual_pointer;
ClutterVirtualInputDevice *virtual_keyboard;
};
static void
meta_remote_desktop_session_init_iface (MetaDBusRemoteDesktopSessionIface *iface);
static void
meta_dbus_session_init_iface (MetaDbusSessionInterface *iface);
G_DEFINE_TYPE_WITH_CODE (MetaRemoteDesktopSession,
meta_remote_desktop_session,
META_DBUS_TYPE_REMOTE_DESKTOP_SESSION_SKELETON,
G_IMPLEMENT_INTERFACE (META_DBUS_TYPE_REMOTE_DESKTOP_SESSION,
meta_remote_desktop_session_init_iface)
G_IMPLEMENT_INTERFACE (META_TYPE_DBUS_SESSION,
meta_dbus_session_init_iface))
static gboolean
meta_remote_desktop_session_is_running (MetaRemoteDesktopSession *session)
{
return !!session->virtual_pointer;
}
static gboolean
meta_remote_desktop_session_start (MetaRemoteDesktopSession *session,
GError **error)
{
ClutterDeviceManager *device_manager =
clutter_device_manager_get_default ();
g_assert (!session->virtual_pointer && !session->virtual_keyboard);
if (session->screen_cast_session)
{
if (!meta_screen_cast_session_start (session->screen_cast_session, error))
return FALSE;
}
session->virtual_pointer =
clutter_device_manager_create_virtual_device (device_manager,
CLUTTER_POINTER_DEVICE);
session->virtual_keyboard =
clutter_device_manager_create_virtual_device (device_manager,
CLUTTER_KEYBOARD_DEVICE);
return TRUE;
}
void
meta_remote_desktop_session_close (MetaRemoteDesktopSession *session)
{
MetaDBusRemoteDesktopSession *skeleton =
META_DBUS_REMOTE_DESKTOP_SESSION (session);
if (session->screen_cast_session)
{
g_signal_handler_disconnect (session->screen_cast_session,
session->screen_cast_session_closed_handler_id);
meta_screen_cast_session_close (session->screen_cast_session);
session->screen_cast_session = NULL;
}
g_clear_object (&session->virtual_pointer);
g_clear_object (&session->virtual_keyboard);
meta_dbus_session_notify_closed (META_DBUS_SESSION (session));
meta_dbus_remote_desktop_session_emit_closed (skeleton);
g_dbus_interface_skeleton_unexport (G_DBUS_INTERFACE_SKELETON (session));
g_object_unref (session);
}
char *
meta_remote_desktop_session_get_object_path (MetaRemoteDesktopSession *session)
{
return session->object_path;
}
char *
meta_remote_desktop_session_get_session_id (MetaRemoteDesktopSession *session)
{
return session->session_id;
}
static void
on_screen_cast_session_closed (MetaScreenCastSession *screen_cast_session,
MetaRemoteDesktopSession *session)
{
session->screen_cast_session = NULL;
meta_remote_desktop_session_close (session);
}
gboolean
meta_remote_desktop_session_register_screen_cast (MetaRemoteDesktopSession *session,
MetaScreenCastSession *screen_cast_session,
GError **error)
{
if (session->screen_cast_session)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Remote desktop session already have an associated "
"screen cast session");
return FALSE;
}
session->screen_cast_session = screen_cast_session;
session->screen_cast_session_closed_handler_id =
g_signal_connect (screen_cast_session, "session-closed",
G_CALLBACK (on_screen_cast_session_closed),
session);
return TRUE;
}
MetaRemoteDesktopSession *
meta_remote_desktop_session_new (MetaRemoteDesktop *remote_desktop,
GError **error)
{
GDBusInterfaceSkeleton *interface_skeleton;
MetaRemoteDesktopSession *session;
GDBusConnection *connection;
session = g_object_new (META_TYPE_REMOTE_DESKTOP_SESSION, NULL);
interface_skeleton = G_DBUS_INTERFACE_SKELETON (session);
connection = meta_remote_desktop_get_connection (remote_desktop);
if (!g_dbus_interface_skeleton_export (interface_skeleton,
connection,
session->object_path,
error))
{
g_object_unref (session);
return NULL;
}
return session;
}
static gboolean
handle_start (MetaDBusRemoteDesktopSession *skeleton,
GDBusMethodInvocation *invocation)
{
MetaRemoteDesktopSession *session = META_REMOTE_DESKTOP_SESSION (skeleton);
GError *error = NULL;
if (!meta_remote_desktop_session_start (session, &error))
{
g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR,
G_DBUS_ERROR_FAILED,
"Failed to start remote desktop: %s",
error->message);
g_error_free (error);
meta_remote_desktop_session_close (session);
return TRUE;
}
meta_dbus_remote_desktop_session_complete_start (skeleton, invocation);
return TRUE;
}
static gboolean
handle_stop (MetaDBusRemoteDesktopSession *skeleton,
GDBusMethodInvocation *invocation)
{
MetaRemoteDesktopSession *session = META_REMOTE_DESKTOP_SESSION (skeleton);
meta_remote_desktop_session_close (session);
meta_dbus_remote_desktop_session_complete_stop (skeleton, invocation);
return TRUE;
}
static gboolean
handle_notify_keyboard_keysym (MetaDBusRemoteDesktopSession *skeleton,
GDBusMethodInvocation *invocation,
unsigned int keysym,
gboolean pressed)
{
MetaRemoteDesktopSession *session = META_REMOTE_DESKTOP_SESSION (skeleton);
ClutterKeyState state;
if (pressed)
state = CLUTTER_KEY_STATE_PRESSED;
else
state = CLUTTER_KEY_STATE_RELEASED;
clutter_virtual_input_device_notify_keyval (session->virtual_keyboard,
CLUTTER_CURRENT_TIME,
keysym,
state);
meta_dbus_remote_desktop_session_complete_notify_keyboard_keysym (skeleton,
invocation);
return TRUE;
}
/* Translation taken from the clutter evdev backend. */
static int
translate_to_clutter_button (int button)
{
switch (button)
{
case BTN_LEFT:
return CLUTTER_BUTTON_PRIMARY;
case BTN_RIGHT:
return CLUTTER_BUTTON_SECONDARY;
case BTN_MIDDLE:
return CLUTTER_BUTTON_MIDDLE;
default:
/*
* For compatibility reasons, all additional buttons go after the old
* 4-7 scroll ones.
*/
return button - (BTN_LEFT - 1) + 4;
}
}
static gboolean
handle_notify_pointer_button (MetaDBusRemoteDesktopSession *skeleton,
GDBusMethodInvocation *invocation,
int button_code,
gboolean pressed)
{
MetaRemoteDesktopSession *session = META_REMOTE_DESKTOP_SESSION (skeleton);
uint32_t button;
ClutterButtonState state;
button = translate_to_clutter_button (button_code);
if (pressed)
state = CLUTTER_BUTTON_STATE_PRESSED;
else
state = CLUTTER_BUTTON_STATE_RELEASED;
clutter_virtual_input_device_notify_button (session->virtual_pointer,
CLUTTER_CURRENT_TIME,
button,
state);
meta_dbus_remote_desktop_session_complete_notify_pointer_button (skeleton,
invocation);
return TRUE;
}
static ClutterScrollDirection
discrete_steps_to_scroll_direction (unsigned int axis,
int steps)
{
if (axis == 0 && steps < 0)
return CLUTTER_SCROLL_UP;
if (axis == 0 && steps > 0)
return CLUTTER_SCROLL_DOWN;
if (axis == 1 && steps < 0)
return CLUTTER_SCROLL_LEFT;
if (axis == 1 && steps > 0)
return CLUTTER_SCROLL_RIGHT;
g_assert_not_reached ();
}
static gboolean
handle_notify_pointer_axis_discrete (MetaDBusRemoteDesktopSession *skeleton,
GDBusMethodInvocation *invocation,
unsigned int axis,
int steps)
{
MetaRemoteDesktopSession *session = META_REMOTE_DESKTOP_SESSION (skeleton);
ClutterScrollDirection direction;
if (axis <= 1)
{
g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR,
G_DBUS_ERROR_FAILED,
"Invalid axis value");
return TRUE;
}
if (steps == 0)
{
g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR,
G_DBUS_ERROR_FAILED,
"Invalid axis steps value");
return TRUE;
}
if (steps != -1 || steps != 1)
g_warning ("Multiple steps at at once not yet implemented, treating as one.");
/*
* We don't have the actual scroll source, but only know they should be
* considered as discrete steps. The device that produces such scroll events
* is the scroll wheel, so pretend that is the scroll source.
*/
direction = discrete_steps_to_scroll_direction (axis, steps);
clutter_virtual_input_device_notify_discrete_scroll (session->virtual_pointer,
CLUTTER_CURRENT_TIME,
direction,
CLUTTER_SCROLL_SOURCE_WHEEL);
meta_dbus_remote_desktop_session_complete_notify_pointer_axis_discrete (skeleton,
invocation);
return TRUE;
}
static gboolean
handle_notify_pointer_motion_absolute (MetaDBusRemoteDesktopSession *skeleton,
GDBusMethodInvocation *invocation,
const char *stream_path,
double x,
double y)
{
MetaRemoteDesktopSession *session = META_REMOTE_DESKTOP_SESSION (skeleton);
clutter_virtual_input_device_notify_absolute_motion (session->virtual_pointer,
CLUTTER_CURRENT_TIME,
x, y);
meta_dbus_remote_desktop_session_complete_notify_pointer_motion_absolute (skeleton,
invocation);
return TRUE;
}
static void
meta_remote_desktop_session_init_iface (MetaDBusRemoteDesktopSessionIface *iface)
{
iface->handle_start = handle_start;
iface->handle_stop = handle_stop;
iface->handle_notify_keyboard_keysym = handle_notify_keyboard_keysym;
iface->handle_notify_pointer_button = handle_notify_pointer_button;
iface->handle_notify_pointer_axis_discrete = handle_notify_pointer_axis_discrete;
iface->handle_notify_pointer_motion_absolute = handle_notify_pointer_motion_absolute;
}
static void
meta_remote_desktop_session_client_vanished (MetaDbusSession *dbus_session)
{
meta_remote_desktop_session_close (META_REMOTE_DESKTOP_SESSION (dbus_session));
}
static void
meta_dbus_session_init_iface (MetaDbusSessionInterface *iface)
{
iface->client_vanished = meta_remote_desktop_session_client_vanished;
}
static void
meta_remote_desktop_session_finalize (GObject *object)
{
MetaRemoteDesktopSession *session = META_REMOTE_DESKTOP_SESSION (object);
g_assert (!meta_remote_desktop_session_is_running (session));
g_free (session->session_id);
g_free (session->object_path);
G_OBJECT_CLASS (meta_remote_desktop_session_parent_class)->finalize (object);
}
static void
meta_remote_desktop_session_init (MetaRemoteDesktopSession *session)
{
MetaDBusRemoteDesktopSession *skeleton =
META_DBUS_REMOTE_DESKTOP_SESSION (session);
GRand *rand;
static unsigned int global_session_number = 0;
rand = g_rand_new ();
session->session_id = meta_generate_random_id (rand, 32);
g_rand_free (rand);
meta_dbus_remote_desktop_session_set_session_id (skeleton, session->session_id);
session->object_path =
g_strdup_printf (META_REMOTE_DESKTOP_SESSION_DBUS_PATH "/u%u",
++global_session_number);
}
static void
meta_remote_desktop_session_class_init (MetaRemoteDesktopSessionClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = meta_remote_desktop_session_finalize;
}

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2015-2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#ifndef META_REMOTE_DESKTOP_SESSION_H
#define META_REMOTE_DESKTOP_SESSION_H
#include <glib-object.h>
#include "backends/meta-remote-desktop.h"
#include "backends/meta-screen-cast-session.h"
#define META_TYPE_REMOTE_DESKTOP_SESSION (meta_remote_desktop_session_get_type ())
G_DECLARE_FINAL_TYPE (MetaRemoteDesktopSession, meta_remote_desktop_session,
META, REMOTE_DESKTOP_SESSION,
MetaDBusRemoteDesktopSessionSkeleton)
char * meta_remote_desktop_session_get_object_path (MetaRemoteDesktopSession *session);
char * meta_remote_desktop_session_get_session_id (MetaRemoteDesktopSession *session);
gboolean meta_remote_desktop_session_register_screen_cast (MetaRemoteDesktopSession *session,
MetaScreenCastSession *screen_cast_session,
GError **error);
void meta_remote_desktop_session_close (MetaRemoteDesktopSession *session);
MetaRemoteDesktopSession * meta_remote_desktop_session_new (MetaRemoteDesktop *remote_desktop,
GError **error);
#endif /* META_REMOTE_DESKTOP_SESSION_H */

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2015-2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#define _GNU_SOURCE
#include "config.h"
#include "backends/meta-remote-desktop.h"
#include <errno.h>
#include <glib.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include "meta-dbus-remote-desktop.h"
#include "backends/meta-backend-private.h"
#include "backends/meta-cursor-renderer.h"
#include "backends/meta-remote-desktop-session.h"
#include "backends/native/meta-cursor-renderer-native.h"
#include "meta/errors.h"
#include "meta/meta-backend.h"
#define META_REMOTE_DESKTOP_DBUS_SERVICE "org.gnome.Mutter.RemoteDesktop"
#define META_REMOTE_DESKTOP_DBUS_PATH "/org/gnome/Mutter/RemoteDesktop"
struct _MetaRemoteDesktop
{
MetaDBusRemoteDesktopSkeleton parent;
int dbus_name_id;
GHashTable *sessions;
MetaDbusSessionWatcher *session_watcher;
};
static void
meta_remote_desktop_init_iface (MetaDBusRemoteDesktopIface *iface);
G_DEFINE_TYPE_WITH_CODE (MetaRemoteDesktop,
meta_remote_desktop,
META_DBUS_TYPE_REMOTE_DESKTOP_SKELETON,
G_IMPLEMENT_INTERFACE (META_DBUS_TYPE_REMOTE_DESKTOP,
meta_remote_desktop_init_iface));
GDBusConnection *
meta_remote_desktop_get_connection (MetaRemoteDesktop *remote_desktop)
{
GDBusInterfaceSkeleton *interface_skeleton =
G_DBUS_INTERFACE_SKELETON (remote_desktop);
return g_dbus_interface_skeleton_get_connection (interface_skeleton);
}
MetaRemoteDesktopSession *
meta_remote_desktop_get_session (MetaRemoteDesktop *remote_desktop,
const char *session_id)
{
return g_hash_table_lookup (remote_desktop->sessions, session_id);
}
static void
on_session_closed (MetaRemoteDesktopSession *session,
MetaRemoteDesktop *remote_desktop)
{
char *session_id;
session_id = meta_remote_desktop_session_get_session_id (session);
g_hash_table_remove (remote_desktop->sessions, session_id);
}
static gboolean
handle_create_session (MetaDBusRemoteDesktop *skeleton,
GDBusMethodInvocation *invocation)
{
MetaRemoteDesktop *remote_desktop = META_REMOTE_DESKTOP (skeleton);
MetaRemoteDesktopSession *session;
GError *error = NULL;
char *session_id;
char *session_path;
const char *client_dbus_name;
session = meta_remote_desktop_session_new (remote_desktop,
&error);
if (!session)
{
g_warning ("Failed to create remote desktop session: %s",
error->message);
g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR,
G_DBUS_ERROR_FAILED,
"Failed to create session: %s",
error->message);
g_error_free (error);
return TRUE;
}
session_id = meta_remote_desktop_session_get_session_id (session);
g_hash_table_insert (remote_desktop->sessions,
session_id,
session);
client_dbus_name = g_dbus_method_invocation_get_sender (invocation);
meta_dbus_session_watcher_watch_session (remote_desktop->session_watcher,
client_dbus_name,
META_DBUS_SESSION (session));
session_path = meta_remote_desktop_session_get_object_path (session);
meta_dbus_remote_desktop_complete_create_session (skeleton,
invocation,
session_path);
g_signal_connect (session, "session-closed",
G_CALLBACK (on_session_closed),
remote_desktop);
return TRUE;
}
static void
meta_remote_desktop_init_iface (MetaDBusRemoteDesktopIface *iface)
{
iface->handle_create_session = handle_create_session;
}
static void
on_bus_acquired (GDBusConnection *connection,
const char *name,
gpointer user_data)
{
MetaRemoteDesktop *remote_desktop = user_data;
GDBusInterfaceSkeleton *interface_skeleton =
G_DBUS_INTERFACE_SKELETON (remote_desktop);
GError *error = NULL;
if (!g_dbus_interface_skeleton_export (interface_skeleton,
connection,
META_REMOTE_DESKTOP_DBUS_PATH,
&error))
g_warning ("Failed to export remote desktop object: %s\n", error->message);
}
static void
on_name_acquired (GDBusConnection *connection,
const char *name,
gpointer user_data)
{
g_info ("Acquired name %s\n", name);
}
static void
on_name_lost (GDBusConnection *connection,
const char *name,
gpointer user_data)
{
g_warning ("Lost or failed to acquire name %s\n", name);
}
static void
meta_remote_desktop_constructed (GObject *object)
{
MetaRemoteDesktop *remote_desktop = META_REMOTE_DESKTOP (object);
remote_desktop->dbus_name_id =
g_bus_own_name (G_BUS_TYPE_SESSION,
META_REMOTE_DESKTOP_DBUS_SERVICE,
G_BUS_NAME_OWNER_FLAGS_NONE,
on_bus_acquired,
on_name_acquired,
on_name_lost,
remote_desktop,
NULL);
}
static void
meta_remote_desktop_finalize (GObject *object)
{
MetaRemoteDesktop *remote_desktop = META_REMOTE_DESKTOP (object);
GList *sessions;
if (remote_desktop->dbus_name_id != 0)
g_bus_unown_name (remote_desktop->dbus_name_id);
sessions = g_list_copy (g_hash_table_get_values (remote_desktop->sessions));
g_list_free_full (sessions,
(GDestroyNotify) meta_remote_desktop_session_close);
g_hash_table_destroy (remote_desktop->sessions);
G_OBJECT_CLASS (meta_remote_desktop_parent_class)->finalize (object);
}
MetaRemoteDesktop *
meta_remote_desktop_new (MetaDbusSessionWatcher *session_watcher)
{
MetaRemoteDesktop *remote_desktop;
remote_desktop = g_object_new (META_TYPE_REMOTE_DESKTOP, NULL);
remote_desktop->session_watcher = session_watcher;
return remote_desktop;
}
static void
meta_remote_desktop_init (MetaRemoteDesktop *remote_desktop)
{
remote_desktop->sessions = g_hash_table_new (g_str_hash, g_str_equal);
}
static void
meta_remote_desktop_class_init (MetaRemoteDesktopClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->constructed = meta_remote_desktop_constructed;
object_class->finalize = meta_remote_desktop_finalize;
}

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2015-2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#ifndef META_REMOTE_DESKTOP_H
#define META_REMOTE_DESKTOP_H
#include <glib-object.h>
#include "backends/meta-dbus-session-watcher.h"
#include "meta-dbus-remote-desktop.h"
typedef struct _MetaRemoteDesktopSession MetaRemoteDesktopSession;
#define META_TYPE_REMOTE_DESKTOP (meta_remote_desktop_get_type ())
G_DECLARE_FINAL_TYPE (MetaRemoteDesktop, meta_remote_desktop,
META, REMOTE_DESKTOP,
MetaDBusRemoteDesktopSkeleton)
MetaRemoteDesktopSession * meta_remote_desktop_get_session (MetaRemoteDesktop *remote_desktop,
const char *session_id);
GDBusConnection * meta_remote_desktop_get_connection (MetaRemoteDesktop *remote_desktop);
MetaRemoteDesktop * meta_remote_desktop_new (MetaDbusSessionWatcher *session_watcher);
#endif /* META_REMOTE_DESKTOP_H */

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include "config.h"
#include "backends/meta-screen-cast-monitor-stream-src.h"
#include "backends/meta-backend-private.h"
#include "backends/meta-screen-cast-monitor-stream.h"
#include "backends/meta-logical-monitor.h"
#include "backends/meta-monitor.h"
#include "clutter/clutter.h"
#include "clutter/clutter-mutter.h"
struct _MetaScreenCastMonitorStreamSrc
{
MetaScreenCastStreamSrc parent;
gulong stage_painted_handler_id;
};
G_DEFINE_TYPE (MetaScreenCastMonitorStreamSrc,
meta_screen_cast_monitor_stream_src,
META_TYPE_SCREEN_CAST_STREAM_SRC)
static ClutterStage *
get_stage (MetaScreenCastMonitorStreamSrc *monitor_src)
{
MetaScreenCastStreamSrc *src;
MetaScreenCastStream *stream;
MetaScreenCastMonitorStream *monitor_stream;
src = META_SCREEN_CAST_STREAM_SRC (monitor_src);
stream = meta_screen_cast_stream_src_get_stream (src);
monitor_stream = META_SCREEN_CAST_MONITOR_STREAM (stream);
return meta_screen_cast_monitor_stream_get_stage (monitor_stream);
}
static MetaMonitor *
get_monitor (MetaScreenCastMonitorStreamSrc *monitor_src)
{
MetaScreenCastStreamSrc *src;
MetaScreenCastStream *stream;
MetaScreenCastMonitorStream *monitor_stream;
src = META_SCREEN_CAST_STREAM_SRC (monitor_src);
stream = meta_screen_cast_stream_src_get_stream (src);
monitor_stream = META_SCREEN_CAST_MONITOR_STREAM (stream);
return meta_screen_cast_monitor_stream_get_monitor (monitor_stream);
}
static void
meta_screen_cast_monitor_stream_src_get_specs (MetaScreenCastStreamSrc *src,
int *width,
int *height,
float *frame_rate)
{
MetaScreenCastMonitorStreamSrc *monitor_src =
META_SCREEN_CAST_MONITOR_STREAM_SRC (src);
MetaMonitor *monitor;
MetaLogicalMonitor *logical_monitor;
float scale;
MetaMonitorMode *mode;
monitor = get_monitor (monitor_src);
logical_monitor = meta_monitor_get_logical_monitor (monitor);
mode = meta_monitor_get_current_mode (monitor);
scale = logical_monitor->scale;
*width = (int) roundf (logical_monitor->rect.width * scale);
*height = (int) roundf (logical_monitor->rect.height * scale);
*frame_rate = meta_monitor_mode_get_refresh_rate (mode);
}
static void
meta_screen_cast_monitor_stream_src_record_frame (MetaScreenCastStreamSrc *src,
uint8_t *data)
{
MetaScreenCastMonitorStreamSrc *monitor_src =
META_SCREEN_CAST_MONITOR_STREAM_SRC (src);
ClutterStage *stage;
MetaMonitor *monitor;
MetaLogicalMonitor *logical_monitor;
stage = get_stage (monitor_src);
monitor = get_monitor (monitor_src);
logical_monitor = meta_monitor_get_logical_monitor (monitor);
clutter_stage_capture_into (stage, FALSE, &logical_monitor->rect, data);
}
static void
stage_painted (ClutterActor *actor,
MetaScreenCastMonitorStreamSrc *monitor_src)
{
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (monitor_src);
meta_screen_cast_stream_src_maybe_record_frame (src);
}
MetaScreenCastMonitorStreamSrc *
meta_screen_cast_monitor_stream_src_new (MetaScreenCastMonitorStream *monitor_stream,
const char *stream_id,
GError **error)
{
return g_initable_new (META_TYPE_SCREEN_CAST_MONITOR_STREAM_SRC,
NULL,
error,
"stream-id", stream_id,
"stream", monitor_stream,
NULL);
}
static void
meta_screen_cast_monitor_stream_src_constructed (GObject *object)
{
MetaScreenCastMonitorStreamSrc *monitor_src =
META_SCREEN_CAST_MONITOR_STREAM_SRC (object);
ClutterStage *stage;
stage = get_stage (monitor_src);
monitor_src->stage_painted_handler_id =
g_signal_connect_after (stage, "paint",
G_CALLBACK (stage_painted),
monitor_src);
clutter_actor_queue_redraw (CLUTTER_ACTOR (stage));
}
static void
meta_screen_cast_monitor_stream_src_finalize (GObject *object)
{
MetaScreenCastMonitorStreamSrc *monitor_src =
META_SCREEN_CAST_MONITOR_STREAM_SRC (object);
GObjectClass *parent_class =
G_OBJECT_CLASS (meta_screen_cast_monitor_stream_src_parent_class);
ClutterStage *stage;
stage = get_stage (monitor_src);
g_signal_handler_disconnect (stage, monitor_src->stage_painted_handler_id);
parent_class->finalize (object);
}
static void
meta_screen_cast_monitor_stream_src_init (MetaScreenCastMonitorStreamSrc *monitor_src)
{
}
static void
meta_screen_cast_monitor_stream_src_class_init (MetaScreenCastMonitorStreamSrcClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
MetaScreenCastStreamSrcClass *src_class =
META_SCREEN_CAST_STREAM_SRC_CLASS (klass);
object_class->constructed = meta_screen_cast_monitor_stream_src_constructed;
object_class->finalize = meta_screen_cast_monitor_stream_src_finalize;
src_class->get_specs = meta_screen_cast_monitor_stream_src_get_specs;
src_class->record_frame = meta_screen_cast_monitor_stream_src_record_frame;
}

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#ifndef META_SCREEN_CAST_MONITOR_STREAM_SRC_H
#define META_SCREEN_CAST_MONITOR_STREAM_SRC_H
#include "backends/meta-monitor-manager-private.h"
#include "backends/meta-screen-cast-stream-src.h"
typedef struct _MetaScreenCastMonitorStream MetaScreenCastMonitorStream;
#define META_TYPE_SCREEN_CAST_MONITOR_STREAM_SRC (meta_screen_cast_monitor_stream_src_get_type ())
G_DECLARE_FINAL_TYPE (MetaScreenCastMonitorStreamSrc,
meta_screen_cast_monitor_stream_src,
META, SCREEN_CAST_MONITOR_STREAM_SRC,
MetaScreenCastStreamSrc)
MetaScreenCastMonitorStreamSrc * meta_screen_cast_monitor_stream_src_new (MetaScreenCastMonitorStream *monitor_stream,
const char *stream_id,
GError **error);
#endif /* META_SCREEN_CAST_MONITOR_STREAM_SRC_H */

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include "config.h"
#include "backends/meta-screen-cast-monitor-stream.h"
#include "backends/meta-logical-monitor.h"
#include "backends/meta-screen-cast-monitor-stream-src.h"
struct _MetaScreenCastMonitorStream
{
MetaScreenCastStream parent;
ClutterStage *stage;
MetaMonitor *monitor;
MetaLogicalMonitor *logical_monitor;
};
G_DEFINE_TYPE (MetaScreenCastMonitorStream,
meta_screen_cast_monitor_stream,
META_TYPE_SCREEN_CAST_STREAM)
static gboolean
update_monitor (MetaScreenCastMonitorStream *monitor_stream,
MetaMonitor *new_monitor)
{
MetaLogicalMonitor *new_logical_monitor;
new_logical_monitor = meta_monitor_get_logical_monitor (new_monitor);
if (!new_logical_monitor)
return FALSE;
if (!meta_rectangle_equal (&new_logical_monitor->rect,
&monitor_stream->logical_monitor->rect))
return FALSE;
g_set_object (&monitor_stream->monitor, new_monitor);
g_set_object (&monitor_stream->logical_monitor, new_logical_monitor);
return TRUE;
}
static void
on_monitors_changed (MetaMonitorManager *monitor_manager,
MetaScreenCastMonitorStream *monitor_stream)
{
MetaMonitor *new_monitor = NULL;
GList *monitors;
GList *l;
monitors = meta_monitor_manager_get_monitors (monitor_manager);
for (l = monitors; l; l = l->next)
{
MetaMonitor *other_monitor = l->data;
if (meta_monitor_is_same_as (monitor_stream->monitor, other_monitor))
{
new_monitor = other_monitor;
break;
}
}
if (!new_monitor || !update_monitor (monitor_stream, new_monitor))
meta_screen_cast_stream_close (META_SCREEN_CAST_STREAM (monitor_stream));
}
ClutterStage *
meta_screen_cast_monitor_stream_get_stage (MetaScreenCastMonitorStream *monitor_stream)
{
return monitor_stream->stage;
}
MetaMonitor *
meta_screen_cast_monitor_stream_get_monitor (MetaScreenCastMonitorStream *monitor_stream)
{
return monitor_stream->monitor;
}
MetaScreenCastMonitorStream *
meta_screen_cast_monitor_stream_new (GDBusConnection *connection,
MetaMonitorManager *monitor_manager,
MetaMonitor *monitor,
ClutterStage *stage,
GError **error)
{
MetaScreenCastMonitorStream *monitor_stream;
MetaLogicalMonitor *logical_monitor;
logical_monitor = meta_monitor_get_logical_monitor (monitor);
if (!logical_monitor)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Monitor not active");
return NULL;
}
monitor_stream = g_initable_new (META_TYPE_SCREEN_CAST_MONITOR_STREAM,
NULL,
error,
"connection", connection,
NULL);
if (!monitor_stream)
return NULL;
g_set_object (&monitor_stream->monitor, monitor);
g_set_object (&monitor_stream->logical_monitor, logical_monitor);
monitor_stream->stage = stage;
g_signal_connect_object (monitor_manager, "monitors-changed",
G_CALLBACK (on_monitors_changed),
monitor_stream, 0);
return monitor_stream;
}
static MetaScreenCastStreamSrc *
meta_screen_cast_monitor_stream_create_src (MetaScreenCastStream *stream,
const char *stream_id,
GError **error)
{
MetaScreenCastMonitorStream *monitor_stream =
META_SCREEN_CAST_MONITOR_STREAM (stream);
MetaScreenCastMonitorStreamSrc *monitor_stream_src;
monitor_stream_src = meta_screen_cast_monitor_stream_src_new (monitor_stream,
stream_id,
error);
if (!monitor_stream_src)
return NULL;
return META_SCREEN_CAST_STREAM_SRC (monitor_stream_src);
}
static void
meta_screen_cast_monitor_stream_finalize (GObject *object)
{
MetaScreenCastMonitorStream *monitor_stream =
META_SCREEN_CAST_MONITOR_STREAM (object);
g_clear_object (&monitor_stream->monitor);
g_clear_object (&monitor_stream->logical_monitor);
G_OBJECT_CLASS (meta_screen_cast_monitor_stream_parent_class)->finalize (object);
}
static void
meta_screen_cast_monitor_stream_init (MetaScreenCastMonitorStream *monitor_stream)
{
}
static void
meta_screen_cast_monitor_stream_class_init (MetaScreenCastMonitorStreamClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
MetaScreenCastStreamClass *stream_class =
META_SCREEN_CAST_STREAM_CLASS (klass);
object_class->finalize = meta_screen_cast_monitor_stream_finalize;
stream_class->create_src = meta_screen_cast_monitor_stream_create_src;
}

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#ifndef META_SCREEN_CAST_MONITOR_STREAM_H
#define META_SCREEN_CAST_MONITOR_STREAM_H
#include <glib-object.h>
#include "backends/meta-monitor-manager-private.h"
#include "backends/meta-screen-cast-stream.h"
#define META_TYPE_SCREEN_CAST_MONITOR_STREAM (meta_screen_cast_monitor_stream_get_type ())
G_DECLARE_FINAL_TYPE (MetaScreenCastMonitorStream,
meta_screen_cast_monitor_stream,
META, SCREEN_CAST_MONITOR_STREAM,
MetaScreenCastStream)
MetaScreenCastMonitorStream * meta_screen_cast_monitor_stream_new (GDBusConnection *connection,
MetaMonitorManager *monitor_manager,
MetaMonitor *monitor,
ClutterStage *stage,
GError **error);
ClutterStage * meta_screen_cast_monitor_stream_get_stage (MetaScreenCastMonitorStream *monitor_stream);
MetaMonitor * meta_screen_cast_monitor_stream_get_monitor (MetaScreenCastMonitorStream *monitor_stream);
#endif /* META_SCREEN_CAST_MONITOR_STREAM_H */

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2015-2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include "config.h"
#include "backends/meta-screen-cast-session.h"
#include "backends/meta-backend-private.h"
#include "backends/meta-dbus-session-watcher.h"
#include "backends/meta-screen-cast-monitor-stream.h"
#include "backends/meta-screen-cast-stream.h"
#define META_SCREEN_CAST_SESSION_DBUS_PATH "/org/gnome/Mutter/ScreenCast/Session"
struct _MetaScreenCastSession
{
MetaDBusScreenCastSessionSkeleton parent;
MetaScreenCastSessionType session_type;
char *object_path;
GList *streams;
};
static void
meta_screen_cast_session_init_iface (MetaDBusScreenCastSessionIface *iface);
static void
meta_dbus_session_init_iface (MetaDbusSessionInterface *iface);
G_DEFINE_TYPE_WITH_CODE (MetaScreenCastSession,
meta_screen_cast_session,
META_DBUS_TYPE_SCREEN_CAST_SESSION_SKELETON,
G_IMPLEMENT_INTERFACE (META_DBUS_TYPE_SCREEN_CAST_SESSION,
meta_screen_cast_session_init_iface)
G_IMPLEMENT_INTERFACE (META_TYPE_DBUS_SESSION,
meta_dbus_session_init_iface))
gboolean
meta_screen_cast_session_start (MetaScreenCastSession *session,
GError **error)
{
GList *l;
for (l = session->streams; l; l = l->next)
{
MetaScreenCastStream *stream = l->data;
if (!meta_screen_cast_stream_start (stream, error))
return FALSE;
}
return TRUE;
}
void
meta_screen_cast_session_close (MetaScreenCastSession *session)
{
MetaDBusScreenCastSession *skeleton = META_DBUS_SCREEN_CAST_SESSION (session);
g_list_free_full (session->streams, g_object_unref);
meta_dbus_session_notify_closed (META_DBUS_SESSION (session));
switch (session->session_type)
{
case META_SCREEN_CAST_SESSION_TYPE_NORMAL:
meta_dbus_screen_cast_session_emit_closed (skeleton);
break;
case META_SCREEN_CAST_SESSION_TYPE_REMOTE_DESKTOP:
break;
}
g_dbus_interface_skeleton_unexport (G_DBUS_INTERFACE_SKELETON (session));
g_object_unref (session);
}
char *
meta_screen_cast_session_get_object_path (MetaScreenCastSession *session)
{
return session->object_path;
}
static gboolean
handle_start (MetaDBusScreenCastSession *skeleton,
GDBusMethodInvocation *invocation)
{
g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR,
G_DBUS_ERROR_FAILED,
"Stand alone screen casting not yet implemented");
return TRUE;
}
static gboolean
handle_stop (MetaDBusScreenCastSession *skeleton,
GDBusMethodInvocation *invocation)
{
g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR,
G_DBUS_ERROR_FAILED,
"Stand alone screen casting not yet implemented");
return TRUE;
}
static void
on_stream_closed (MetaScreenCastStream *stream,
MetaScreenCastSession *session)
{
meta_screen_cast_session_close (session);
}
static gboolean
handle_record_monitor (MetaDBusScreenCastSession *skeleton,
GDBusMethodInvocation *invocation,
const char *connector,
GVariant *properties_variant)
{
MetaScreenCastSession *session = META_SCREEN_CAST_SESSION (skeleton);
GDBusInterfaceSkeleton *interface_skeleton;
GDBusConnection *connection;
MetaBackend *backend = meta_get_backend ();
MetaMonitorManager *monitor_manager =
meta_backend_get_monitor_manager (backend);
MetaMonitor *monitor;
ClutterStage *stage;
GError *error = NULL;
MetaScreenCastMonitorStream *monitor_stream;
MetaScreenCastStream *stream;
char *stream_path;
interface_skeleton = G_DBUS_INTERFACE_SKELETON (skeleton);
connection = g_dbus_interface_skeleton_get_connection (interface_skeleton);
if (g_str_equal (connector, ""))
monitor = meta_monitor_manager_get_primary_monitor (monitor_manager);
else
monitor = meta_monitor_manager_get_monitor_from_connector (monitor_manager,
connector);
if (!monitor)
{
g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR,
G_DBUS_ERROR_FAILED,
"Unknown monitor");
return TRUE;
}
stage = CLUTTER_STAGE (meta_backend_get_stage (backend));
monitor_stream = meta_screen_cast_monitor_stream_new (connection,
monitor_manager,
monitor,
stage,
&error);
if (!monitor_stream)
{
g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR,
G_DBUS_ERROR_FAILED,
"Failed to record monitor: %s",
error->message);
g_error_free (error);
return TRUE;
}
stream = META_SCREEN_CAST_STREAM (monitor_stream);
stream_path = meta_screen_cast_stream_get_object_path (stream);
session->streams = g_list_append (session->streams, stream);
g_signal_connect (stream, "closed", G_CALLBACK (on_stream_closed), session);
meta_dbus_screen_cast_session_complete_record_monitor (skeleton,
invocation,
stream_path);
return TRUE;
}
static gboolean
handle_record_window (MetaDBusScreenCastSession *skeleton,
GDBusMethodInvocation *invocation,
GVariant *properties_variant)
{
g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR,
G_DBUS_ERROR_FAILED,
"Recording a window not yet supported");
return TRUE;
}
static void
meta_screen_cast_session_init_iface (MetaDBusScreenCastSessionIface *iface)
{
iface->handle_start = handle_start;
iface->handle_stop = handle_stop;
iface->handle_record_monitor = handle_record_monitor;
iface->handle_record_window = handle_record_window;
}
static void
meta_screen_cast_session_client_vanished (MetaDbusSession *dbus_session)
{
meta_screen_cast_session_close (META_SCREEN_CAST_SESSION (dbus_session));
}
static void
meta_dbus_session_init_iface (MetaDbusSessionInterface *iface)
{
iface->client_vanished = meta_screen_cast_session_client_vanished;
}
MetaScreenCastSession *
meta_screen_cast_session_new (MetaScreenCast *screen_cast,
MetaScreenCastSessionType session_type,
GError **error)
{
GDBusInterfaceSkeleton *interface_skeleton;
MetaScreenCastSession *session;
GDBusConnection *connection;
static unsigned int global_session_number = 0;
session = g_object_new (META_TYPE_SCREEN_CAST_SESSION, NULL);
session->session_type = session_type;
session->object_path =
g_strdup_printf (META_SCREEN_CAST_SESSION_DBUS_PATH "/u%u",
++global_session_number);
interface_skeleton = G_DBUS_INTERFACE_SKELETON (session);
connection = meta_screen_cast_get_connection (screen_cast);
if (!g_dbus_interface_skeleton_export (interface_skeleton,
connection,
session->object_path,
error))
return NULL;
return session;
}
static void
meta_screen_cast_session_finalize (GObject *object)
{
MetaScreenCastSession *session = META_SCREEN_CAST_SESSION (object);
g_free (session->object_path);
G_OBJECT_CLASS (meta_screen_cast_session_parent_class)->finalize (object);
}
static void
meta_screen_cast_session_init (MetaScreenCastSession *session)
{
}
static void
meta_screen_cast_session_class_init (MetaScreenCastSessionClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = meta_screen_cast_session_finalize;
}

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2015-2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#ifndef META_SCREEN_CAST_SESSION_H
#define META_SCREEN_CAST_SESSION_H
#include "backends/meta-screen-cast.h"
typedef enum _MetaScreenCastSessionType
{
META_SCREEN_CAST_SESSION_TYPE_NORMAL,
META_SCREEN_CAST_SESSION_TYPE_REMOTE_DESKTOP,
} MetaScreenCastSessionType;
#define META_TYPE_SCREEN_CAST_SESSION (meta_screen_cast_session_get_type ())
G_DECLARE_FINAL_TYPE (MetaScreenCastSession, meta_screen_cast_session,
META, SCREEN_CAST_SESSION,
MetaDBusScreenCastSessionSkeleton)
char * meta_screen_cast_session_get_object_path (MetaScreenCastSession *session);
MetaScreenCastSession * meta_screen_cast_session_new (MetaScreenCast *screen_cast,
MetaScreenCastSessionType session_type,
GError **error);
gboolean meta_screen_cast_session_start (MetaScreenCastSession *session,
GError **error);
void meta_screen_cast_session_close (MetaScreenCastSession *session);
#endif /* META_SCREEN_CAST_SESSION_H */

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2015-2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include "config.h"
#include "backends/meta-screen-cast-stream-src.h"
#include <errno.h>
#include <pipewire/pipewire.h>
#include <spa/format-builder.h>
#include <spa/format-utils.h>
#include <spa/props.h>
#include <spa/type-map.h>
#include <spa/video/format-utils.h>
#include <stdint.h>
#include <sys/mman.h>
#include "backends/meta-screen-cast-stream.h"
#include "clutter/clutter-mutter.h"
#include "core/meta-fraction.h"
#include "meta/boxes.h"
#define PRIVATE_OWNER_FROM_FIELD(TypeName, field_ptr, field_name) \
(TypeName *)((guint8 *)(field_ptr) - G_PRIVATE_OFFSET (TypeName, field_name))
enum
{
PROP_0,
PROP_STREAM,
PROP_STREAM_ID,
};
typedef struct _MetaSpaType
{
uint32_t format;
uint32_t props;
struct spa_type_meta meta;
struct spa_type_data data;
struct spa_type_media_type media_type;
struct spa_type_media_subtype media_subtype;
struct spa_type_format_video format_video;
struct spa_type_video_format video_format;
} MetaSpaType;
typedef struct _MetaPipeWireSource
{
GSource base;
struct pw_loop *pipewire_loop;
} MetaPipeWireSource;
typedef struct _MetaScreenCastStreamSrcPrivate
{
MetaScreenCastStream *stream;
char *stream_id;
struct pw_core *pipewire_core;
struct pw_remote *pipewire_remote;
struct pw_type *pipewire_type;
MetaPipeWireSource *pipewire_source;
struct spa_hook pipewire_remote_listener;
struct pw_stream *pipewire_stream;
struct spa_hook pipewire_stream_listener;
MetaSpaType spa_type;
uint8_t params_buffer[1024];
struct spa_video_info_raw video_format;
uint64_t last_frame_timestamp_us;
} MetaScreenCastStreamSrcPrivate;
static void
meta_screen_cast_stream_src_init_initable_iface (GInitableIface *iface);
G_DEFINE_TYPE_WITH_CODE (MetaScreenCastStreamSrc,
meta_screen_cast_stream_src,
G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE,
meta_screen_cast_stream_src_init_initable_iface)
G_ADD_PRIVATE (MetaScreenCastStreamSrc))
#define PROP(f, key, type, ...) \
SPA_POD_PROP (f, key, 0, type, 1, __VA_ARGS__)
#define PROP_U_MM(f, key, type, ...) \
SPA_POD_PROP (f, key, (SPA_POD_PROP_FLAG_UNSET | \
SPA_POD_PROP_RANGE_MIN_MAX), \
type, 3, __VA_ARGS__)
static void
meta_screen_cast_stream_src_get_specs (MetaScreenCastStreamSrc *src,
int *width,
int *height,
float *frame_rate)
{
MetaScreenCastStreamSrcClass *klass =
META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src);
klass->get_specs (src, width, height, frame_rate);
}
static void
meta_screen_cast_stream_src_record_frame (MetaScreenCastStreamSrc *src,
uint8_t *data)
{
MetaScreenCastStreamSrcClass *klass =
META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src);
klass->record_frame (src, data);
}
void
meta_screen_cast_stream_src_maybe_record_frame (MetaScreenCastStreamSrc *src)
{
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
uint32_t buffer_id;
struct spa_buffer *buffer;
uint8_t *map = NULL;
uint8_t *data;
uint64_t now_us;
now_us = g_get_monotonic_time ();
if (priv->last_frame_timestamp_us != 0 &&
(now_us - priv->last_frame_timestamp_us <
((1000000 * priv->video_format.max_framerate.denom) /
priv->video_format.max_framerate.num)))
return;
if (!priv->pipewire_stream)
return;
buffer_id = pw_stream_get_empty_buffer (priv->pipewire_stream);
if (buffer_id == SPA_ID_INVALID)
return;
buffer = pw_stream_peek_buffer (priv->pipewire_stream, buffer_id);
if (buffer->datas[0].type == priv->spa_type.data.MemFd)
{
map = mmap (NULL, buffer->datas[0].maxsize + buffer->datas[0].mapoffset,
PROT_READ | PROT_WRITE, MAP_SHARED,
buffer->datas[0].fd, 0);
if (map == MAP_FAILED)
{
g_warning ("Failed to mmap pipewire stream buffer: %s\n",
strerror (errno));
return;
}
data = SPA_MEMBER (map, buffer->datas[0].mapoffset, uint8_t);
}
else if (buffer->datas[0].type == priv->spa_type.data.MemPtr)
{
data = buffer->datas[0].data;
}
else
{
return;
}
meta_screen_cast_stream_src_record_frame (src, data);
priv->last_frame_timestamp_us = now_us;
if (map)
munmap (map, buffer->datas[0].maxsize + buffer->datas[0].mapoffset);
pw_stream_send_buffer (priv->pipewire_stream, buffer_id);
}
static void
on_stream_state_changed (void *data,
enum pw_stream_state old,
enum pw_stream_state state,
const char *error_message)
{
}
static void
on_stream_format_changed (void *data,
struct spa_format *format)
{
MetaScreenCastStreamSrc *src = data;
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
struct pw_type *pipewire_type = priv->pipewire_type;
struct spa_type_param_alloc_buffers *param_alloc_buffers;
struct spa_pod_builder pod_builder = { NULL };
struct spa_pod_frame object_frame;
struct spa_pod_frame prop_frame;
struct spa_param *params[1];
const int bpp = 4;
if (!format)
{
pw_stream_finish_format (priv->pipewire_stream, SPA_RESULT_OK, NULL, 0);
return;
}
spa_format_video_raw_parse (format,
&priv->video_format,
&priv->spa_type.format_video);
spa_pod_builder_init (&pod_builder,
priv->params_buffer,
sizeof (priv->params_buffer));
param_alloc_buffers = &pipewire_type->param_alloc_buffers;
spa_pod_builder_object (&pod_builder, &object_frame, 0,
param_alloc_buffers->Buffers,
PROP (&prop_frame, param_alloc_buffers->size,
SPA_POD_TYPE_INT,
(priv->video_format.size.width *
priv->video_format.size.height *
bpp)),
PROP (&prop_frame, param_alloc_buffers->stride,
SPA_POD_TYPE_INT,
priv->video_format.size.width * bpp),
PROP_U_MM (&prop_frame, param_alloc_buffers->buffers,
SPA_POD_TYPE_INT,
16, 2, 16),
PROP (&prop_frame, param_alloc_buffers->align,
SPA_POD_TYPE_INT,
16));
params[0] = SPA_POD_BUILDER_DEREF (&pod_builder, object_frame.ref,
struct spa_param);
pw_stream_finish_format (priv->pipewire_stream, SPA_RESULT_OK,
params, G_N_ELEMENTS (params));
}
static const struct pw_stream_events stream_events = {
PW_VERSION_STREAM_EVENTS,
.state_changed = on_stream_state_changed,
.format_changed = on_stream_format_changed,
};
static struct pw_stream *
create_pipewire_stream (MetaScreenCastStreamSrc *src,
GError **error)
{
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
struct pw_stream *pipewire_stream;
const struct spa_format *format;
uint8_t buffer[1024];
struct spa_pod_builder pod_builder =
SPA_POD_BUILDER_INIT (buffer, sizeof (buffer));
struct spa_pod_frame format_frame;
struct spa_pod_frame prop_frame;
MetaSpaType *spa_type = &priv->spa_type;
int width, height;
float frame_rate;
MetaFraction frame_rate_fraction;
pipewire_stream = pw_stream_new (priv->pipewire_remote,
"meta-screen-cast-src",
NULL);
meta_screen_cast_stream_src_get_specs (src, &width, &height, &frame_rate);
frame_rate_fraction = meta_fraction_from_double (frame_rate);
spa_pod_builder_format (&pod_builder, &format_frame,
spa_type->format,
spa_type->media_type.video,
spa_type->media_subtype.raw,
PROP (&prop_frame,
spa_type->format_video.format,
SPA_POD_TYPE_ID, spa_type->video_format.BGRx),
PROP (&prop_frame,
spa_type->format_video.size,
SPA_POD_TYPE_RECTANGLE,
width, height),
PROP (&prop_frame,
spa_type->format_video.framerate,
SPA_POD_TYPE_FRACTION,
0, 1),
PROP_U_MM (&prop_frame,
spa_type->format_video.max_framerate,
SPA_POD_TYPE_FRACTION,
frame_rate_fraction.num,
frame_rate_fraction.denom,
1, 1,
frame_rate_fraction.num,
frame_rate_fraction.denom));
format = SPA_POD_BUILDER_DEREF (&pod_builder, format_frame.ref, struct spa_format);
pw_stream_add_listener (pipewire_stream,
&priv->pipewire_stream_listener,
&stream_events,
src);
if (!pw_stream_connect (pipewire_stream,
PW_DIRECTION_OUTPUT,
PW_STREAM_MODE_BUFFER,
NULL,
PW_STREAM_FLAG_NONE,
1, &format))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Could not connect");
return NULL;
}
return pipewire_stream;
}
static void
on_state_changed (void *data,
enum pw_remote_state old,
enum pw_remote_state state,
const char *error_message)
{
MetaScreenCastStreamSrc *src = data;
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
struct pw_stream *pipewire_stream;
GError *error = NULL;
switch (state)
{
case PW_REMOTE_STATE_ERROR:
g_warning ("pipewire remote error: %s\n", error_message);
break;
case PW_REMOTE_STATE_CONNECTED:
pipewire_stream = create_pipewire_stream (src, &error);
if (!pipewire_stream)
{
g_warning ("Could not create pipewire stream: %s", error->message);
g_error_free (error);
}
else
{
priv->pipewire_stream = pipewire_stream;
}
break;
case PW_REMOTE_STATE_UNCONNECTED:
case PW_REMOTE_STATE_CONNECTING:
break;
}
}
static gboolean
pipewire_loop_source_prepare (GSource *base,
int *timeout)
{
*timeout = -1;
return FALSE;
}
static gboolean
pipewire_loop_source_dispatch (GSource *source,
GSourceFunc callback,
gpointer user_data)
{
MetaPipeWireSource *pipewire_source = (MetaPipeWireSource *) source;
int result;
result = pw_loop_iterate (pipewire_source->pipewire_loop, 0);
if (result == SPA_RESULT_ERRNO)
g_warning ("pipewire_loop_iterate failed: %s", strerror (errno));
else if (result != SPA_RESULT_OK)
g_warning ("pipewire_loop_iterate failed: %d", result);
return TRUE;
}
static void
pipewire_loop_source_finalize (GSource *source)
{
MetaPipeWireSource *pipewire_source = (MetaPipeWireSource *) source;
pw_loop_leave (pipewire_source->pipewire_loop);
pw_loop_destroy (pipewire_source->pipewire_loop);
}
static GSourceFuncs pipewire_source_funcs =
{
pipewire_loop_source_prepare,
NULL,
pipewire_loop_source_dispatch,
pipewire_loop_source_finalize
};
static void
init_spa_type (MetaSpaType *type,
struct spa_type_map *map)
{
type->format = spa_type_map_get_id (map, SPA_TYPE__Format);
type->props = spa_type_map_get_id (map, SPA_TYPE__Props);
spa_type_meta_map (map, &type->meta);
spa_type_data_map (map, &type->data);
spa_type_media_type_map (map, &type->media_type);
spa_type_media_subtype_map (map, &type->media_subtype);
spa_type_format_video_map (map, &type->format_video);
spa_type_video_format_map (map, &type->video_format);
}
static MetaPipeWireSource *
create_pipewire_source (void)
{
MetaPipeWireSource *pipewire_source;
pipewire_source =
(MetaPipeWireSource *) g_source_new (&pipewire_source_funcs,
sizeof (MetaPipeWireSource));
pipewire_source->pipewire_loop = pw_loop_new (NULL);
g_source_add_unix_fd (&pipewire_source->base,
pw_loop_get_fd (pipewire_source->pipewire_loop),
G_IO_IN | G_IO_ERR);
pw_loop_enter (pipewire_source->pipewire_loop);
g_source_attach (&pipewire_source->base, NULL);
return pipewire_source;
}
static const struct pw_remote_events remote_events = {
PW_VERSION_REMOTE_EVENTS,
.state_changed = on_state_changed,
};
static gboolean
meta_screen_cast_stream_src_initable_init (GInitable *initable,
GCancellable *cancellable,
GError **error)
{
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (initable);
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
priv->pipewire_source = create_pipewire_source ();
priv->pipewire_core = pw_core_new (priv->pipewire_source->pipewire_loop,
NULL);
if (!priv->pipewire_core)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Failed to create pipewire core");
return FALSE;
}
priv->pipewire_remote = pw_remote_new (priv->pipewire_core, NULL);
if (!priv->pipewire_remote)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Couldn't creat pipewire remote");
return FALSE;
}
pw_remote_add_listener (priv->pipewire_remote,
&priv->pipewire_remote_listener,
&remote_events,
src);
priv->pipewire_type = pw_core_get_type (priv->pipewire_core);
init_spa_type (&priv->spa_type, priv->pipewire_type->map);
if (pw_remote_connect (priv->pipewire_remote) != 0)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Couldn't connect pipewire remote");
return FALSE;
}
return TRUE;
}
static void
meta_screen_cast_stream_src_init_initable_iface (GInitableIface *iface)
{
iface->init = meta_screen_cast_stream_src_initable_init;
}
MetaScreenCastStream *
meta_screen_cast_stream_src_get_stream (MetaScreenCastStreamSrc *src)
{
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
return priv->stream;
}
static void
meta_screen_cast_stream_src_finalize (GObject *object)
{
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (object);
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
g_clear_pointer (&priv->pipewire_stream, (GDestroyNotify) pw_stream_destroy);
pw_remote_destroy (priv->pipewire_remote);
pw_core_destroy (priv->pipewire_core);
g_source_destroy (&priv->pipewire_source->base);
g_clear_pointer (&priv->stream_id, g_free);
G_OBJECT_CLASS (meta_screen_cast_stream_src_parent_class)->finalize (object);
}
static void
meta_screen_cast_stream_src_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (object);
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
switch (prop_id)
{
case PROP_STREAM:
priv->stream = g_value_get_object (value);
break;;
case PROP_STREAM_ID:
priv->stream_id = g_strdup (g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
meta_screen_cast_stream_src_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (object);
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
switch (prop_id)
{
case PROP_STREAM:
g_value_set_object (value, priv->stream);
break;
case PROP_STREAM_ID:
g_value_set_string (value, priv->stream_id);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
meta_screen_cast_stream_src_init (MetaScreenCastStreamSrc *src)
{
}
static void
meta_screen_cast_stream_src_class_init (MetaScreenCastStreamSrcClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = meta_screen_cast_stream_src_finalize;
object_class->set_property = meta_screen_cast_stream_src_set_property;
object_class->get_property = meta_screen_cast_stream_src_get_property;
g_object_class_install_property (object_class,
PROP_STREAM,
g_param_spec_object ("stream",
"stream",
"MetaScreenCastStream",
META_TYPE_SCREEN_CAST_STREAM,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class,
PROP_STREAM_ID,
g_param_spec_string ("stream-id",
"stream-id",
"Unique stream ID",
NULL,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
}

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2015-2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#ifndef META_SCREEN_CAST_STREAM_SRC_H
#define META_SCREEN_CAST_STREAM_SRC_H
#include <glib-object.h>
#include "clutter/clutter.h"
#include "mutter/meta/boxes.h"
typedef struct _MetaScreenCastStream MetaScreenCastStream;
#define META_TYPE_SCREEN_CAST_STREAM_SRC (meta_screen_cast_stream_src_get_type ())
G_DECLARE_DERIVABLE_TYPE (MetaScreenCastStreamSrc,
meta_screen_cast_stream_src,
META, SCREEN_CAST_STREAM_SRC,
GObject)
struct _MetaScreenCastStreamSrcClass
{
GObjectClass parent_class;
void (* get_specs) (MetaScreenCastStreamSrc *src,
int *width,
int *height,
float *frame_rate);
void (* record_frame) (MetaScreenCastStreamSrc *src,
uint8_t *data);
};
void meta_screen_cast_stream_src_maybe_record_frame (MetaScreenCastStreamSrc *src);
MetaScreenCastStream * meta_screen_cast_stream_src_get_stream (MetaScreenCastStreamSrc *src);
#endif /* META_SCREEN_CAST_STREAM_SRC_H */

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include "config.h"
#include "backends/meta-screen-cast-stream.h"
#define META_SCREEN_CAST_STREAM_DBUS_PATH "/org/gnome/Mutter/ScreenCast/Stream"
enum
{
PROP_0,
PROP_CONNECTION,
};
enum
{
CLOSED,
N_SIGNALS
};
static guint signals[N_SIGNALS];
typedef struct _MetaScreenCastStreamPrivate
{
GDBusConnection *connection;
char *object_path;
MetaScreenCastStreamSrc *src;
} MetaScreenCastStreamPrivate;
static void
meta_screen_cast_stream_init_initable_iface (GInitableIface *iface);
G_DEFINE_TYPE_WITH_CODE (MetaScreenCastStream,
meta_screen_cast_stream,
META_DBUS_TYPE_SCREEN_CAST_STREAM_SKELETON,
G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE,
meta_screen_cast_stream_init_initable_iface)
G_ADD_PRIVATE (MetaScreenCastStream))
static MetaScreenCastStreamSrc *
meta_screen_cast_stream_create_src (MetaScreenCastStream *stream,
const char *stream_id,
GError **error)
{
return META_SCREEN_CAST_STREAM_GET_CLASS (stream)->create_src (stream,
stream_id,
error);
}
gboolean
meta_screen_cast_stream_start (MetaScreenCastStream *stream,
GError **error)
{
MetaDBusScreenCastStream *skeleton = META_DBUS_SCREEN_CAST_STREAM (stream);
MetaScreenCastStreamPrivate *priv =
meta_screen_cast_stream_get_instance_private (stream);
g_autofree char *stream_id = NULL;
MetaScreenCastStreamSrc *src;
static unsigned int global_stream_id = 0;
stream_id = g_strdup_printf ("%u", ++global_stream_id);
src = meta_screen_cast_stream_create_src (stream, stream_id, error);
if (!src)
return FALSE;
priv->src = src;
meta_dbus_screen_cast_stream_emit_pipewire_stream_added (skeleton, stream_id);
return TRUE;
}
void
meta_screen_cast_stream_close (MetaScreenCastStream *stream)
{
MetaScreenCastStreamPrivate *priv =
meta_screen_cast_stream_get_instance_private (stream);
g_clear_object (&priv->src);
g_signal_emit (stream, signals[CLOSED], 0);
}
char *
meta_screen_cast_stream_get_object_path (MetaScreenCastStream *stream)
{
MetaScreenCastStreamPrivate *priv =
meta_screen_cast_stream_get_instance_private (stream);
return priv->object_path;
}
static void
meta_screen_cast_stream_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MetaScreenCastStream *stream = META_SCREEN_CAST_STREAM (object);
MetaScreenCastStreamPrivate *priv =
meta_screen_cast_stream_get_instance_private (stream);
switch (prop_id)
{
case PROP_CONNECTION:
priv->connection = g_value_get_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
meta_screen_cast_stream_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MetaScreenCastStream *stream = META_SCREEN_CAST_STREAM (object);
MetaScreenCastStreamPrivate *priv =
meta_screen_cast_stream_get_instance_private (stream);
switch (prop_id)
{
case PROP_CONNECTION:
g_value_set_object (value, priv->connection);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
meta_screen_cast_stream_finalize (GObject *object)
{
MetaScreenCastStream *stream = META_SCREEN_CAST_STREAM (object);
MetaScreenCastStreamPrivate *priv =
meta_screen_cast_stream_get_instance_private (stream);
if (priv->src)
meta_screen_cast_stream_close (stream);
g_clear_pointer (&priv->object_path, g_free);
G_OBJECT_CLASS (meta_screen_cast_stream_parent_class)->finalize (object);
}
static gboolean
meta_screen_cast_stream_initable_init (GInitable *initable,
GCancellable *cancellable,
GError **error)
{
MetaScreenCastStream *stream = META_SCREEN_CAST_STREAM (initable);
MetaScreenCastStreamPrivate *priv =
meta_screen_cast_stream_get_instance_private (stream);
static unsigned int global_stream_number = 0;
priv->object_path =
g_strdup_printf (META_SCREEN_CAST_STREAM_DBUS_PATH "/u%u",
++global_stream_number);
if (!g_dbus_interface_skeleton_export (G_DBUS_INTERFACE_SKELETON (stream),
priv->connection,
priv->object_path,
error))
return FALSE;
return TRUE;
}
static void
meta_screen_cast_stream_init_initable_iface (GInitableIface *iface)
{
iface->init = meta_screen_cast_stream_initable_init;
}
static void
meta_screen_cast_stream_init (MetaScreenCastStream *stream)
{
}
static void
meta_screen_cast_stream_class_init (MetaScreenCastStreamClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = meta_screen_cast_stream_finalize;
object_class->set_property = meta_screen_cast_stream_set_property;
object_class->get_property = meta_screen_cast_stream_get_property;
g_object_class_install_property (object_class,
PROP_CONNECTION,
g_param_spec_object ("connection",
"connection",
"GDBus connection",
G_TYPE_DBUS_CONNECTION,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
signals[CLOSED] = g_signal_new ("closed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 0);
}

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#ifndef META_SCREEN_CAST_STREAM_H
#define META_SCREEN_CAST_STREAM_H
#include <glib-object.h>
#include "backends/meta-screen-cast-stream-src.h"
#include "meta-dbus-screen-cast.h"
#define META_TYPE_SCREEN_CAST_STREAM (meta_screen_cast_stream_get_type ())
G_DECLARE_DERIVABLE_TYPE (MetaScreenCastStream, meta_screen_cast_stream,
META, SCREEN_CAST_STREAM,
MetaDBusScreenCastStreamSkeleton)
struct _MetaScreenCastStreamClass
{
MetaDBusScreenCastStreamSkeletonClass parent_class;
MetaScreenCastStreamSrc * (* create_src) (MetaScreenCastStream *stream,
const char *stream_id,
GError **error);
};
gboolean meta_screen_cast_stream_start (MetaScreenCastStream *stream,
GError **error);
void meta_screen_cast_stream_close (MetaScreenCastStream *stream);
char * meta_screen_cast_stream_get_object_path (MetaScreenCastStream *stream);
#endif /* META_SCREEN_CAST_STREAM_H */

271
src/backends/meta-screen-cast.c Normal file
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@ -0,0 +1,271 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2015-2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include "config.h"
#include "backends/meta-screen-cast.h"
#include <pipewire/pipewire.h>
#include "backends/meta-backend-private.h"
#include "backends/meta-screen-cast-session.h"
#include "backends/meta-remote-desktop-session.h"
#define META_SCREEN_CAST_DBUS_SERVICE "org.gnome.Mutter.ScreenCast"
#define META_SCREEN_CAST_DBUS_PATH "/org/gnome/Mutter/ScreenCast"
struct _MetaScreenCast
{
MetaDBusScreenCastSkeleton parent;
int dbus_name_id;
GList *sessions;
MetaDbusSessionWatcher *session_watcher;
};
static void
meta_screen_cast_init_iface (MetaDBusScreenCastIface *iface);
G_DEFINE_TYPE_WITH_CODE (MetaScreenCast, meta_screen_cast,
META_DBUS_TYPE_SCREEN_CAST_SKELETON,
G_IMPLEMENT_INTERFACE (META_DBUS_TYPE_SCREEN_CAST,
meta_screen_cast_init_iface))
GDBusConnection *
meta_screen_cast_get_connection (MetaScreenCast *screen_cast)
{
GDBusInterfaceSkeleton *interface_skeleton =
G_DBUS_INTERFACE_SKELETON (screen_cast);
return g_dbus_interface_skeleton_get_connection (interface_skeleton);
}
static gboolean
register_remote_desktop_screen_cast_session (MetaScreenCastSession *session,
const char *remote_desktop_session_id,
GError **error)
{
MetaBackend *backend = meta_get_backend ();
MetaRemoteDesktop *remote_desktop = meta_backend_get_remote_desktop (backend);
MetaRemoteDesktopSession *remote_desktop_session;
remote_desktop_session =
meta_remote_desktop_get_session (remote_desktop, remote_desktop_session_id);
if (!remote_desktop_session)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"No remote desktop session found");
return FALSE;
}
if (!meta_remote_desktop_session_register_screen_cast (remote_desktop_session,
session,
error))
return FALSE;
return TRUE;
}
static void
on_session_closed (MetaScreenCastSession *session,
MetaScreenCast *screen_cast)
{
screen_cast->sessions = g_list_remove (screen_cast->sessions, session);
}
static gboolean
handle_create_session (MetaDBusScreenCast *skeleton,
GDBusMethodInvocation *invocation,
GVariant *properties)
{
MetaScreenCast *screen_cast = META_SCREEN_CAST (skeleton);
MetaScreenCastSession *session;
GError *error = NULL;
const char *session_path;
const char *client_dbus_name;
char *remote_desktop_session_id = NULL;
MetaScreenCastSessionType session_type;
g_variant_lookup (properties, "remote-desktop-session-id", "s",
&remote_desktop_session_id);
if (remote_desktop_session_id)
session_type = META_SCREEN_CAST_SESSION_TYPE_REMOTE_DESKTOP;
else
session_type = META_SCREEN_CAST_SESSION_TYPE_NORMAL;
session = meta_screen_cast_session_new (screen_cast, session_type, &error);
if (!session)
{
g_warning ("Failed to create screen cast session: %s",
error->message);
g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR,
G_DBUS_ERROR_FAILED,
"Failed to create session: %s",
error->message);
g_error_free (error);
return TRUE;
}
if (remote_desktop_session_id)
{
if (!register_remote_desktop_screen_cast_session (session,
remote_desktop_session_id,
&error))
{
g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR,
G_DBUS_ERROR_FAILED,
"%s", error->message);
g_error_free (error);
g_object_unref (session);
return TRUE;
}
}
client_dbus_name = g_dbus_method_invocation_get_sender (invocation);
meta_dbus_session_watcher_watch_session (screen_cast->session_watcher,
client_dbus_name,
META_DBUS_SESSION (session));
session_path = meta_screen_cast_session_get_object_path (session);
meta_dbus_screen_cast_complete_create_session (skeleton,
invocation,
session_path);
screen_cast->sessions = g_list_append (screen_cast->sessions, session);
g_signal_connect (session, "session-closed",
G_CALLBACK (on_session_closed),
screen_cast);
return TRUE;
}
static void
meta_screen_cast_init_iface (MetaDBusScreenCastIface *iface)
{
iface->handle_create_session = handle_create_session;
}
static void
on_bus_acquired (GDBusConnection *connection,
const char *name,
gpointer user_data)
{
MetaScreenCast *screen_cast = user_data;
GDBusInterfaceSkeleton *interface_skeleton =
G_DBUS_INTERFACE_SKELETON (screen_cast);
GError *error = NULL;
if (!g_dbus_interface_skeleton_export (interface_skeleton,
connection,
META_SCREEN_CAST_DBUS_PATH,
&error))
g_warning ("Failed to export remote desktop object: %s\n", error->message);
}
static void
on_name_acquired (GDBusConnection *connection,
const char *name,
gpointer user_data)
{
g_info ("Acquired name %s\n", name);
}
static void
on_name_lost (GDBusConnection *connection,
const char *name,
gpointer user_data)
{
g_warning ("Lost or failed to acquire name %s\n", name);
}
static void
meta_screen_cast_constructed (GObject *object)
{
MetaScreenCast *screen_cast = META_SCREEN_CAST (object);
screen_cast->dbus_name_id =
g_bus_own_name (G_BUS_TYPE_SESSION,
META_SCREEN_CAST_DBUS_SERVICE,
G_BUS_NAME_OWNER_FLAGS_NONE,
on_bus_acquired,
on_name_acquired,
on_name_lost,
screen_cast,
NULL);
}
static void
meta_screen_cast_finalize (GObject *object)
{
MetaScreenCast *screen_cast = META_SCREEN_CAST (object);
if (screen_cast->dbus_name_id)
g_bus_unown_name (screen_cast->dbus_name_id);
while (screen_cast->sessions)
{
MetaScreenCastSession *session = screen_cast->sessions->data;
meta_screen_cast_session_close (session);
}
G_OBJECT_CLASS (meta_screen_cast_parent_class)->finalize (object);
}
MetaScreenCast *
meta_screen_cast_new (MetaDbusSessionWatcher *session_watcher)
{
MetaScreenCast *screen_cast;
screen_cast = g_object_new (META_TYPE_SCREEN_CAST, NULL);
screen_cast->session_watcher = session_watcher;
return screen_cast;
}
static void
meta_screen_cast_init (MetaScreenCast *screen_cast)
{
static gboolean is_pipewire_initialized = FALSE;
if (!is_pipewire_initialized)
{
pw_init (NULL, NULL);
is_pipewire_initialized = TRUE;
}
}
static void
meta_screen_cast_class_init (MetaScreenCastClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->constructed = meta_screen_cast_constructed;
object_class->finalize = meta_screen_cast_finalize;
}

40
src/backends/meta-screen-cast.h Normal file
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@ -0,0 +1,40 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2015-2017 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#ifndef META_SCREEN_CAST_H
#define META_SCREEN_CAST_H
#include <glib-object.h>
#include "backends/meta-dbus-session-watcher.h"
#include "meta-dbus-screen-cast.h"
#define META_TYPE_SCREEN_CAST (meta_screen_cast_get_type ())
G_DECLARE_FINAL_TYPE (MetaScreenCast, meta_screen_cast,
META, SCREEN_CAST,
MetaDBusScreenCastSkeleton)
GDBusConnection * meta_screen_cast_get_connection (MetaScreenCast *screen_cast);
MetaScreenCast * meta_screen_cast_new (MetaDbusSessionWatcher *session_watcher);
#endif /* META_SCREEN_CAST_H */

2
src/backends/meta-settings-private.h
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@ -31,6 +31,8 @@ typedef enum _MetaExperimentalFeature
{ {
META_EXPERIMENTAL_FEATURE_NONE = 0, META_EXPERIMENTAL_FEATURE_NONE = 0,
META_EXPERIMENTAL_FEATURE_SCALE_MONITOR_FRAMEBUFFER = (1 << 0), META_EXPERIMENTAL_FEATURE_SCALE_MONITOR_FRAMEBUFFER = (1 << 0),
META_EXPERIMENTAL_FEATURE_SCREEN_CAST = (1 << 1),
META_EXPERIMENTAL_FEATURE_REMOTE_DESKTOP = (1 << 2),
} MetaExperimentalFeature; } MetaExperimentalFeature;
#define META_TYPE_SETTINGS (meta_settings_get_type ()) #define META_TYPE_SETTINGS (meta_settings_get_type ())

4
src/backends/meta-settings.c
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@ -262,6 +262,10 @@ experimental_features_handler (GVariant *features_variant,
/* So far no experimental features defined. */ /* So far no experimental features defined. */
if (g_str_equal (feature, "scale-monitor-framebuffer")) if (g_str_equal (feature, "scale-monitor-framebuffer"))
features |= META_EXPERIMENTAL_FEATURE_SCALE_MONITOR_FRAMEBUFFER; features |= META_EXPERIMENTAL_FEATURE_SCALE_MONITOR_FRAMEBUFFER;
else if (g_str_equal (feature, "screen-cast"))
features |= META_EXPERIMENTAL_FEATURE_SCREEN_CAST;
else if (g_str_equal (feature, "remote-desktop"))
features |= META_EXPERIMENTAL_FEATURE_REMOTE_DESKTOP;
else else
g_info ("Unknown experimental feature '%s'\n", feature); g_info ("Unknown experimental feature '%s'\n", feature);
} }

103
src/org.gnome.Mutter.RemoteDesktop.xml Normal file
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@ -0,0 +1,103 @@
<!DOCTYPE node PUBLIC
'-//freedesktop//DTD D-BUS Object Introspection 1.0//EN'
'http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd'>
<node>
<!--
org.gnome.Mutter.RemoteDesktop:
@short_description: Remote desktop interface
-->
<interface name="org.gnome.Mutter.RemoteDesktop">
<!--
CreateSession:
@session_path: Path to the new session object
-->
<method name="CreateSession">
<arg name="session_path" type="o" direction="out" />
</method>
</interface>
<!--
org.gnome.Mutter.RemoteDesktop.Session:
@short_description: Remote desktop session
-->
<interface name="org.gnome.Mutter.RemoteDesktop.Session">
<!--
SessionId:
An identification string used for identifying a remote desktop session.
It can be used to associate screen cast sessions with a remote desktop session.
-->
<property name="SessionId" type="s" access="read" />
<!--
Start:
Start the remote desktop session
-->
<method name="Start" />
<!--
Stop:
Stop the remote desktop session
-->
<method name="Stop" />
<!--
Closed:
The session has closed.
A session doesn't have to have been started before it may be closed.
After it being closed, it can no longer be used.
-->
<signal name="Closed" />
<!--
NotifyKeyboardKeysym:
A key identified by a keysym was pressed or released
-->
<method name="NotifyKeyboardKeysym">
<arg name="keysym" type="u" direction="in" />
<arg name="state" type="b" direction="in" />
</method>
<!--
NotifyPointerButton:
A pointer button was pressed or released
-->
<method name="NotifyPointerButton">
<arg name="button" type="i" direction="in" />
<arg name="state" type="b" direction="in" />
</method>
<!--
NotifyPointerAxisDiscrete:
A discrete pointer axis event notification
-->
<method name="NotifyPointerAxisDiscrete">
<arg name="axis" type="u" direction="in" />
<arg name="steps" type="i" direction="in" />
</method>
<!--
NotifyPointerMotionAbsolute:
A absolute pointer motion event notification
-->
<method name="NotifyPointerMotionAbsolute">
<arg name="stream" type="s" direction="in" />
<arg name="x" type="d" direction="in" />
<arg name="y" type="d" direction="in" />
</method>
</interface>
</node>

107
src/org.gnome.Mutter.ScreenCast.xml Normal file
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@ -0,0 +1,107 @@
<!DOCTYPE node PUBLIC
'-//freedesktop//DTD D-BUS Object Introspection 1.0//EN'
'http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd'>
<node>
<!--
org.gnome.Mutter.ScreenCast:
@short_description: Screen cast interface
-->
<interface name="org.gnome.Mutter.ScreenCast">
<!--
CreateSession:
@properties: Properties
@session_path: Path to the new session object
* "remote-desktop-session-id" (s): The ID of a remote desktop session.
Remote desktop driven screen casts
are started and stopped by the remote
desktop session.
-->
<method name="CreateSession">
<arg name="properties" type="a{sv}" direction="in" />
<arg name="session_path" type="o" direction="out" />
</method>
</interface>
<!--
org.gnome.Mutter.ScreenCast.Session:
@short_description: Screen cast session
-->
<interface name="org.gnome.Mutter.ScreenCast.Session">
<!--
Start:
Start the screen cast session
-->
<method name="Start" />
<!--
Stop:
Stop the screen cast session
-->
<method name="Stop" />
<!--
Closed:
The session has closed.
-->
<signal name="Closed" />
<!--
RecordMonitor:
@connector: Connector of the monitor to record
@properties: Properties
@stream_path: Path to the new stream object
Record a single monitor.
Available @properties include: (none)
-->
<method name="RecordMonitor">
<arg name="connector" type="s" direction="in" />
<arg name="properties" type="a{sv}" direction="in" />
<arg name="stream_path" type="o" direction="out" />
</method>
<!--
RecordWindow:
@properties: Properties used determining what window to select
@stream_path: Path to the new stream object
Record a single window.
Available @properties include: (none)
-->
<method name="RecordWindow">
<arg name="properties" type="a{sv}" direction="in" />
<arg name="stream_path" type="o" direction="out" />
</method>
</interface>
<!--
org.gnome.Mutter.ScreenCast.Stream:
@short_description: Screen cast stream
-->
<interface name="org.gnome.Mutter.ScreenCast.Stream">
<!--
PipeWireStreamAdded:
@short_description: Pipewire stream added
A signal emitted when PipeWire stream for the screen cast stream has
been created. The @node_id corresponds to the PipeWire stream node.
-->
<signal name="PipeWireStreamAdded">
<annotation name="org.gtk.GDBus.C.Name" value="pipewire-stream-added"/>
<arg name="stream_id" type="s" direction="out" />
</signal>
</interface>
</node>