x11grab: Rename internal component to "xcbgrab"

configure

@@ -2367,7 +2367,7 @@ 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_xcb_indev_deps="libxcb"
+xcbgrab_indev_deps="libxcb"
 
 # protocols
 ffrtmpcrypt_protocol_deps="!librtmp_protocol"

libavdevice/Makefile

@@ -23,7 +23,7 @@ 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-$(CONFIG_X11GRAB_XCB_INDEV)         += xcbgrab.o
+OBJS-$(CONFIG_XCBGRAB_INDEV)             += xcbgrab.o
 
 # external libraries
 OBJS-$(CONFIG_LIBCDIO_INDEV)             += libcdio.o

libavdevice/alldevices.c

@@ -58,7 +58,7 @@ void avdevice_register_all(void)
     REGISTER_INOUTDEV(SNDIO,            sndio);
     REGISTER_INDEV   (V4L2,             v4l2);
     REGISTER_INDEV   (VFWCAP,           vfwcap);
-    REGISTER_INDEV   (X11GRAB_XCB,      x11grab_xcb);
+    REGISTER_INDEV   (XCBGRAB,          xcbgrab);
 
     /* external libraries */
     REGISTER_INDEV   (LIBCDIO,          libcdio);

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_xcb it is the display name.
+ * meaning - e.g. for xcbgrab 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.

libavdevice/xcbgrab.c

@@ -684,7 +684,7 @@ static av_cold int xcbgrab_read_header(AVFormatContext *s)
     return 0;
 }
 
-AVInputFormat ff_x11grab_xcb_demuxer = {
+AVInputFormat ff_xcbgrab_demuxer = {
     .name           = "x11grab",
     .long_name      = NULL_IF_CONFIG_SMALL("X11 screen capture, using XCB"),
     .priv_data_size = sizeof(XCBGrabContext),