This patch fixes a -Wunused-variable reported in e.g
http://fate.ffmpeg.org/log.cgi?time=20150918194649&log=compile&slot=x86_64-debian-asan-144800

.
av_unused is used as opposed to a header guard for readability.

Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Found-By: Cheristheus

Signed-off-by: Nicolas George <george@nsup.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Introduced in e8c4db0d.

And notify why the capture is impossible.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Also reshuffle headers into canonical order where appropriate.

Bug-Id: CID 1274038

Prevent an use after free in the error message.

Bug-Id: CID 1274040
CC: libav-stable@libav.org

CC: libav-stable@libav.org

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Incidentally `-y` also collides with avconv global options.

Update x11grab to match and document the option.

CC: libav-stable@libav.org

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

The feature is implemented using a transparent window and drawing
inside it a rectangle filling the whole window to highlight it.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

The segment field in the struct has to be conditionally build
as well.

Bug-Id: CID 1254668

Bug-Id: CID 1254664
CC: libav-stable@libav.org

Fixes CID1254668

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes trac ticket #4164

This is to address an error when using show_region, which would cause part of the captured area to become static.
It looks like the rectangle specifying the capture area was relative to the capture window.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

works with (--enable-libxcb-shape)  and without (--disable-libxcb-shape) now.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes CID1254664

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Found-by: carl
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Old versions of libxcb do not provide xcb_shape_rectangles().
The issue can be fixed differently but this small change fixes
some fate platforms and a user reported compilation problem.

Reported and tested by trac user kevmitch.
Fixes ticket #4067.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Matches the x11grab screen capture by features.