Remove the legacy X11 screen grabber

The XCB screen grabber is a drop-in replacement and not under GPL.

Changelog

@@ -61,6 +61,7 @@ version <next>:
 - Duck TrueMotion 2.0 Real Time decoder
 - Intel QSV video scaling and deinterlacing filter
 - OpenH264 decoder wrapper
+- Removed the legacy X11 screen grabber, use XCB instead
 
 
 version 11:

LICENSE

@@ -13,7 +13,6 @@ configure to activate them. In this case, Libav's license changes to GPL v2+.
 
 Specifically, the GPL parts of Libav are
 
-- the X11 grabber in libavdevice/x11grab.c
 - the texi2pod.pl tool
 - the following filters in libavfilter:
     - vf_blackframe.c

configure

@@ -227,7 +227,6 @@ External library support:
   --enable-libxcb-xfixes     X11 mouse rendering [auto]
   --enable-libxvid           MPEG-4 ASP video encoding
   --enable-openssl           crypto
-  --enable-x11grab           X11 grabbing through xlib (legacy, use xcb instead)
   --enable-zlib              compression [autodetect]
 
   The following libraries provide various hardware acceleration features:
@@ -1242,7 +1241,6 @@ EXTERNAL_LIBRARY_GPL_LIST="
     libx265
     libxavs
     libxvid
-    x11grab
 "
 
 EXTERNAL_LIBRARY_NONFREE_LIST="
@@ -2369,7 +2367,6 @@ sndio_outdev_deps="sndio_h"
 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
 vfwcap_indev_extralibs="-lavicap32"
-x11grab_indev_deps="x11grab"
 x11grab_xcb_indev_deps="libxcb"
 
 # protocols
@@ -4752,10 +4749,10 @@ fi
 
 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
 
-if enabled libxcb || enabled x11grab && ! disabled libxcb; then
+if enabled libxcb; then
     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
         enabled libxcb && die "ERROR: libxcb not found";
-    } && disable x11grab && enable libxcb
+    } && enable libxcb
 
     disabled libxcb_shm ||
         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
@@ -4771,12 +4768,6 @@ if enabled libxcb || enabled x11grab && ! disabled libxcb; then
     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
 fi
 
-if enabled x11grab; then
-    enabled xlib || die "ERROR: Xlib not found"
-    require Xext X11/extensions/XShm.h XShmCreateImage -lXext
-    require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
-fi
-
 enabled vaapi &&
     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
     disable vaapi

libavdevice/Makefile

@@ -23,7 +23,6 @@ OBJS-$(CONFIG_SNDIO_INDEV)               += sndio_dec.o sndio.o
 OBJS-$(CONFIG_SNDIO_OUTDEV)              += sndio_enc.o sndio.o
 OBJS-$(CONFIG_V4L2_INDEV)                += v4l2.o
 OBJS-$(CONFIG_VFWCAP_INDEV)              += vfwcap.o
-OBJS-$(CONFIG_X11GRAB_INDEV)             += x11grab.o
 OBJS-$(CONFIG_X11GRAB_XCB_INDEV)         += xcbgrab.o
 
 # external libraries

libavdevice/alldevices.c

@@ -58,7 +58,6 @@ void avdevice_register_all(void)
     REGISTER_INOUTDEV(SNDIO,            sndio);
     REGISTER_INDEV   (V4L2,             v4l2);
     REGISTER_INDEV   (VFWCAP,           vfwcap);
-    REGISTER_INDEV   (X11GRAB,          x11grab);
     REGISTER_INDEV   (X11GRAB_XCB,      x11grab_xcb);
 
     /* external libraries */

libavdevice/avdevice.h

@@ -36,7 +36,7 @@
  * (de)muxers in libavdevice are of the AVFMT_NOFILE type (they use their own
  * I/O functions). The filename passed to avformat_open_input() often does not
  * refer to an actually existing file, but has some special device-specific
- * meaning - e.g. for x11grab it is the display name.
+ * meaning - e.g. for x11grab_xcb it is the display name.
  *
  * To use libavdevice, simply call avdevice_register_all() to register all
  * compiled muxers and demuxers. They all use standard libavformat API.