Based on a libmpcodecs/vf_rectangle.c feature.

The filter has been ported to a native libavfilter filter.

The filter is a port of libmpcodecs/vf_field.c, since there is no common
code I relicensed it as LGPL, while keeping the original author
copyright.

Signed-off-by: Paul B Mahol <onemda@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>

That interface is deprecated, and apparently useless.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Same functionality is provided by libswscale.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

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

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

Fixes Ticket1658
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

This fixes output with filtergraphs such as 'split[a][b];
[a]pad=iw*2[src]; [b]smartblur=1:1:1[filt]; [src][filt]overlay=w'

This is simpler and also should allow the code to function when the
channel number changes.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Some awk versions do not treat the result of unary + on a (numeric)
string as numeric, giving wrong results when used in a boolean context
Using unary - instead is logically equivalent works as expected.
Signed-off-by: Mans Rullgard <mans@mansr.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>

The old key expired
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Based on fill_plane9or10() by luca barbato
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  pixfmt: support more yuva formats
  swscale: support gray to 9bit and 10bit formats
  configure: rewrite print_config() function using awk
  FATE: fix (AD)PCM test dependencies broken in e519990c
  Use ptrdiff_t instead of int for intra pred "stride" function parameter.
  x86: use PRED4x4/8x8/8x8L/16x16 macros to declare intrapred prototypes.

Conflicts:
	libavcodec/h264pred.c
	libavcodec/h264pred_template.c
	libavutil/pixfmt.h
	libswscale/swscale_unscaled.c
	tests/ref/lavfi/pixdesc
	tests/ref/lavfi/pixfmts_copy
	tests/ref/lavfi/pixfmts_null
	tests/ref/lavfi/pixfmts_scale
	tests/ref/lavfi/pixfmts_vflip
Merged-by: Michael Niedermayer <michaelni@gmx.at>

The filter is useless, swscale should be used instead.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

* commit '08b028c1':
  Remove INIT_AVX from x86inc.asm.
  Remove usage of INIT_AVX in h264_intrapred_10bit.asm.
  dv: fix indentation

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

* commit '14f031d7':
  dv: use AVStream.index instead of abusing AVStream.id
  lavfi: add ashowinfo filter
  avcodec: Add a RFC 3389 comfort noise codec
  lpc: Add a function for calculating reflection coefficients from samples
  lpc: Add a function for calculating reflection coefficients from autocorrelation coefficients
  lavr: document upper bound on number of output samples.
  lavr: add general API usage doxy
  indeo3: remove duplicate capabilities line.
  fate: ac3: Add dependencies

Conflicts:
	Changelog
	doc/filters.texi
	libavcodec/Makefile
	libavcodec/allcodecs.c
	libavcodec/avcodec.h
	libavcodec/codec_desc.c
	libavcodec/version.h
	libavfilter/Makefile
	libavfilter/af_ashowinfo.c
	libavfilter/allfilters.c
	libavfilter/version.h
	libavutil/avutil.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '381dc1a5':
  fate: ac3: Place E-AC-3 tests and AC-3 tests in different groups
  fate: Add shorthands for acodec PCM and ADPCM tests
  avconv: Drop unused function argument from do_video_stats()
  cmdutils: Conditionally compile libswscale-related bits
  aacenc: Drop some unused function arguments
  rtsp: Avoid a cast when calling strtol
  nut: support textual data
  nutenc: verbosely report unsupported negative pts

Conflicts:
	cmdutils.c
	ffmpeg.c
	libavformat/nut.c
	libavformat/nutenc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Fixes CID205019
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

With the input of Kostya and Ronald.

This is much faster with slow shells and noticeably faster even
with bash on a fast Linux system.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>