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

* qatar/master:
  doc: Try to find nonstandard Perl path from the environment

Conflicts:
	doc/texi2pod.pl
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '3cd612d4':
  gitignore: Ignore multilibrary example programs
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This reverts commit a87b17f3.
This reduces the amount of non LGPL code, making a relicensing to LGPL
easier

Conflicts:

	libavfilter/vf_yadif.c
	libavfilter/x86/yadif.c
	libavfilter/x86/yadif_template.c
	libavfilter/yadif.h
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This reverts commit 49e617f9.
This reduces the amount of non LGPL code, making a relicensing to LGPL
easier

Conflicts:

	libavfilter/vf_yadif.c
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This reverts commit 568c70e7.
This reduces the amount of non LGPL code, making a relicensing to LGPL
easier
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

Fixes ticket #3181.

Fixes ticket #3184

It was previously int and would return error if decode_coeffs_b()
returns an error; however, that can never happen, so refactor all
that code to make all dependent functions return void also (all the
way up to decode_coeffs_sb()).

The old one didn't use segmentation. One uses segmentation in all frame
types (--aq-mode=1), and the other uses all segmentation features, but
only in inter frames (mbgraph).

This disables backward probability updates, which makes the codec more
friendly for frame-level multi-threading.

For a random 1080p sample, decoding time went from 9.7sec (1 threads)
to 6.0sec (2 threads) and 5.2sec (4 threads) in 2-pass decoding mode.
I don't have any samples that use the parallelmode feature, but the
gains should be higher.

We need more information from last/cur_frame than from reference
buffers, so we can use a simplified structure for reference buffers,
and then store mvs and segmentation map information in last/cur.

They aren't really block-related variables in the sense that they are
not block-coded, rather they are state trackers.

Based on something similar in libav. Author is likely Anton Khirnov
<anton@khirnov.net> but I'm not sure.

Without this nothing will remove it even if it isnt generated in newer
versions anymore.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Also the libavutil/ffversion.h will be installed.

Rationale:
* Applications might want to know FFmpeg's version besides the individual
  libraries'.
* Avoids file name clash between FFmpeg's ./version.h and lib*/version.h when
  a library source file includes both and is compiled on an out-of-tree build.

Fixes #1769.
Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  dcadec: Add some logging before returning on error

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

* commit 'f058f384':
  configure: Do not use pthread_create to check for pthread
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* cigaes/master:
  lavc/srtenc: use bprint for text buffers.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Improve feedback.

Also move FFM section up in the file, and rename it.

Fix trac ticket #3120.

They are only needed by removelogo.
This fixes a link failure in shared builds when compiling with
removelogo disabled but Lavf/SwS enabled
Signed-off-by: James Almer <jamrial@gmail.com>
Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Based on a patch by Michael Niedermayer.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>