Fixes ticket #3246.

* cigaes/master:
  lavd/xv: report if no adaptor present.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* lukaszmluki/master:
  lavf/libssh: improve authentication
  lavf/libssh: fix file mode
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* cus/stable:
  ffplay: do not wait for the picture allocation to finish on exit
  ffplay: remove two unneeded av_free_packet calls
  ffplay: remove some unneded av_frame_unref calls
  ffplay: remove unneeded avcodec_get_frame_defaults
  ffplay: use precalculated frame size and bytes per sec values
  ffplay: precalculate audio output frame size and byte per sec
Merged-by: Michael Niedermayer <michaelni@gmx.at>

- Add authentication using keys
- Provide better message on fail
Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com>

Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com>

Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7f7812ca062f_2812_SC_32_part.MVE
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes: /ld/michael/ffmpeg_uninit/ffmpeg_uninit/done/msan_uninit-mem_7fb3e0fa86e9_1980_INTRO_B.VB
Fixes use of uninitialized memory
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

When SDL could not allocate a YUV overlay or open a window, the video thread
got locked up because it waited for the allocation to finish forever.
Reported-by: Carl Eugen Hoyos <cehoyos@ag.or.at>
Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Marton Balint <cus@passwd.hu>

av_buffersrc_add_frame implicitly unreferences the added frame.
Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Timothy Gu <timothygu99@gmail.com>

Signed-off-by: Timothy Gu <timothygu99@gmail.com>

This part of the script doesn't check if git command is available and produce error if not.
It is 2 years since address changed and it is more reasonable to remove it than fix it.
Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes: msan_uninit-mem_7f6c73c97cf9_3571_als_04_2ch48k16b.mp4
Fixes use of uninitialized memory
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Reviewed-by: Thilo Borgmann <thilo.borgmann@mail.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  h264: namespace the decode function
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Some compilers dont support that
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* 'master' of https://github.com/upsuper/ffmpeg-vdadec:
  avcodec/vda_h264_dec: add format check
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Also add a list of supported decoders.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Fixes: msan_uninit-mem_7f9539ba8461_4760_dasboot_in_compressed
Fixes use of uninitialized memory
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes: msan_uninit-mem_7f50b84aac30_6823_mjp2.mov
Fixes use of uninitialized memory
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This matches what avcodec uses
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

    use string comparison in assembler derivatives to prevents assembler from treating names in test expressions as imported symbols
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes: msan_uninit-mem_7f58816b71e3_7025_mov_svq3___svq3_weird_prediction2.mov
Fixes use of uninitialized memory
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes: msan_uninit-mem_7f4960453a02_7264_mr_cork_jpeg.mov
Fixes use of uninitialized memory
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* rbultje/vp9-simd:
  vp9/x86: 16px MC functions (64bit only).
  vp9/x86: 16x16 sub-IDCT for top-left 8x8 subblock (eob <= 38).
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  doxy: Update the css to have a flat style
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '9ace13db':
  doxy: Fix link in badge color
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'b83d1ee3':
  avutil: Move library version related macros to version.h

Conflicts:
	libavcodec/version.h
	libavresample/version.h
	libavutil/avutil.h
	libavutil/utils.c

See: 183117feMerged-by: Michael Niedermayer <michaelni@gmx.at>

Fixes: msan_uninit-mem_7ff4404547ba_4883_dmbts.ts
Fixes assertion failure
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Make much easier debugging.

Cycle counts for large MCs (old -> new on ped1080p.webm, mx!=0&&my!=0):
16x8:    876 ->   870  (0.7%)
16x16:  1444 ->  1435  (0.7%)
16x32:  2784 ->  2748  (1.3%)
32x16:  2455 ->  2349  (4.5%)
32x32:  4641 ->  4084 (13.6%)
32x64:  9200 ->  7834 (17.4%)
64x32:  8980 ->  7197 (24.8%)
64x64: 17330 -> 13796 (25.6%)
Total decoding time goes from 9.326sec to 9.182sec.