Based on original code by Christophe Gisquet in 2010, updated to work
with current ffmpeg APIs.

Supports grabbing a single window or an area of the screen, including
support for multiple monitors (Windows does funky stuff with negative
coordinates here).

I've moved most of the configuration to AVOptions; the input file name
is now only the string "desktop", or "title=<windowname>" to select a
single window. The AVOptions are the same as x11grab where possible.

Code has been added to support a "show_region" mode, like x11grab, which
will draw a rectangle on the screen around the area being captured.

Instead of duplicating code for paletted image handling, I make use of
the GDI API's ability to output DIB (BMP) images, which can be run
through ffmpeg's existing BMP decoder.
Signed-off-by: Calvin Walton <calvin.walton@kepstin.ca>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Necessary for HLS version 3 and above.  Fixes ticket #3505.
Signed-off-by: Senthilnathan M <senthil.codr@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* cehoyos/master:
  Write aspect ratio when muxing gif.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

Fixes make checkheaders
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

* qatar/master:
  vf_settb: rename to settb

Conflicts:
	libavfilter/Makefile
	libavfilter/f_settb.c
	libavfilter/settb.c
	libavfilter/vf_settb.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '9d599e3f':
  avi: Improve non-interleaved detection

Conflicts:
	libavformat/avidec.c

See: 8df774be and others
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '0ca0924c':
  swscale: add endianness conversion for AV_PIX_FMT_BGRA64|RGBA64

Conflicts:
	libswscale/swscale_unscaled.c
	libswscale/utils.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

An audio version of settb (asettb) will be added to this file.
Signed-off-by: Diego Biurrun <diego@biurrun.de>

Additional fixes by Nigel Touati-Evans <nigel.touatievans@gmail.com>.

Check the index for streams with a time drift of 2s or a buffer drift
of 64MB.

Bug-Id: 666
CC: libav-stable@libav.org
Sample-Id: yet-another-broken-interleaved-avi.avi
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Signed-off-by: Diego Biurrun <diego@biurrun.de>

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

* qatar/master:
  vc1dec: fix a possible unitialized variable warning

Conflicts:
	libavcodec/vc1dec.c

No change as the variables where not uninitialized in ffmpeg
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'f1c4a54f':
  lavf: add supported extension to avi and mov demuxers
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'cba4e606':
  More correct printf format specifiers

Conflicts:
	libavcodec/h264_ps.c
	libavcodec/h264_refs.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '80035db8':
  lavu: add missing formats to av_pix_fmt_swap_endianness

Conflicts:
	libavutil/pixdesc.c

No change as our av_pix_fmt_swap_endianness() does not need formats to be listed individually
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* cus/stable:
  mpeg12enc: always set closed gop flag on the first gop
  mpeg12enc: always write closed gops for intra only outputs
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This avoids compiler warnings about argument and specifier type mismatch.

* qatar/master:
  VP3: K&R formatting cosmetics

Conflicts:
	libavcodec/vp3.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '66d04c06':
  fate: Explicitly use gray16le in fate-sgi-gray16

Conflicts:
	tests/fate/image.mak
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Improves compatibility with XDCAM HD formats. It has been set for a long time
in ffmbc.
Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Marton Balint <cus@passwd.hu>

Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Nedeljko Babic <nbabic@mips.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Nedeljko Babic <nbabic@mips.com>

the CONFIG_ prefix is used by configure, using it for other things
is potentially confusing to the reader
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Nedeljko Babic <nbabic@mips.com>

Signed-off-by: Nedeljko Babic <nbabic@mips.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Signed-off-by: Nedeljko Babic <nbabic@mips.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes Ticket3478
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This fixes the test on big endian.
Signed-off-by: Martin Storsjö <martin@martin.st>

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