x11: drop xscrnsaver use

It's an ancient X11 protocol extension that apparently nobody uses
anymore (desktop environments in particular have replaced it with
equally bad protocols that require tons of dependencies). Users keep
complaining about it being a required dependency.

The impact is likely minimal to none.

Fixes #4706 and other annoying people.

3 files changed, 1 insertions, 18 deletions

diff --git a/README.md b/README.md
index ce38279235..5fa0c4cd67 100644
--- a/README.md
+++ b/README.md
@@ -96,7 +96,7 @@ Example:
 Essential dependencies (incomplete list):
 
 - gcc or clang
-- X development headers (xlib, xrandr, xext, xscrnsaver, xinerama, libvdpau,
+- X development headers (xlib, xrandr, xext, xinerama, libvdpau,
   libGL, GLX, EGL, xv, ...)
 - Audio output development headers (libasound/ALSA, pulseaudio)
 - FFmpeg libraries (libavutil libavcodec libavformat libswscale libavfilter
diff --git a/video/out/x11_common.c b/video/out/x11_common.c
index 30ad89746f..41c9d8b00a 100644
--- a/video/out/x11_common.c
+++ b/video/out/x11_common.c
@@ -33,7 +33,6 @@
 #include <X11/XKBlib.h>
 #include <X11/XF86keysym.h>
 
-#include <X11/extensions/scrnsaver.h>
 #include <X11/extensions/dpms.h>
 #include <X11/extensions/Xinerama.h>
 #include <X11/extensions/Xrandr.h>
@@ -1908,22 +1907,9 @@ static void xscreensaver_heartbeat(struct vo_x11_state *x11)
     {
         x11->screensaver_time_last = time;
         sem_post(&x11->screensaver_sem);
-        XResetScreenSaver(x11->display);
     }
 }
 
-static int xss_suspend(Display *mDisplay, Bool suspend)
-{
-    int event, error, major, minor;
-    if (XScreenSaverQueryExtension(mDisplay, &event, &error) != True ||
-        XScreenSaverQueryVersion(mDisplay, &major, &minor) != True)
-        return 0;
-    if (major < 1 || (major == 1 && minor < 1))
-        return 0;
-    XScreenSaverSuspend(mDisplay, suspend);
-    return 1;
-}
-
 static void set_screensaver(struct vo_x11_state *x11, bool enabled)
 {
     Display *mDisplay = x11->display;
@@ -1931,8 +1917,6 @@ static void set_screensaver(struct vo_x11_state *x11, bool enabled)
         return;
     MP_VERBOSE(x11, "%s screensaver.\n", enabled ? "Enabling" : "Disabling");
     x11->screensaver_enabled = enabled;
-    if (xss_suspend(mDisplay, !enabled))
-        return;
     int nothing;
     if (DPMSQueryExtension(mDisplay, &nothing, &nothing)) {
         BOOL onoff = 0;
diff --git a/wscript b/wscript
index ad57df9d67..feb20851a3 100644
--- a/wscript
+++ b/wscript
@@ -578,7 +578,6 @@ video_output_features = [
         'name': '--x11',
         'desc': 'X11',
         'func': check_pkg_config('x11',         '>= 1.0.0',
-                                 'xscrnsaver',  '>= 1.0.0',
                                  'xext',        '>= 1.0.0',
                                  'xinerama',    '>= 1.0.0',
                                  'xrandr',      '>= 1.2.0'),