Technically _tzcnt* intrinsics are only available when the BMI
instruction set is present. However the instruction encoding
degrades to "rep bsf" on older processors.

Clang for Windows debatably restricts the _tzcnt* instrinics behind
the __BMI__ architecture define, so check for its presence or
exclude the usage of these intrinics when clang is present.

See also:
https://ffmpeg.org/pipermail/ffmpeg-devel/2015-November/183404.html
https://bugs.llvm.org/show_bug.cgi?id=30506
http://lists.llvm.org/pipermail/cfe-dev/2016-October/051034.htmlSigned-off-by: Dale Curtis <dalecurtis@chromium.org>
Reviewed-by: Matt Oliver <protogonoi@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

* commit '26d9b603':
  hevc: Avoid using LOCAL_ALIGNED for 4 byte alignment
Merged-by: James Almer <jamrial@gmail.com>

* commit '163cc67b':
  takdec: Use ISO C printf conversion specifiers where appropriate
  dcadec: remove extra indirection
  hevcdec: Use LOCAL_ALIGNED_* for declaring local variables with alignment
  arm: Always build the hevcdsp_init_arm.c file

This commit is a noop.
Merged-by: James Almer <jamrial@gmail.com>

Signed-off-by: Zhong Li <zhong.li@intel.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Code suggested by ubitux
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Enables demuxing of Ambisonics content coded with channel mapping 2
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

* commit '5a969f64':
  jack: Drop support for old (2012) JACK versions
Merged-by: James Almer <jamrial@gmail.com>

* commit '1bd986ed':
  hwcontext: Move NONE to the be the first member of AVHWDeviceType
Merged-by: James Almer <jamrial@gmail.com>

* commit '0b9a237b':
  hevc: Add NEON 4x4 and 8x8 IDCT

[15:12:59] <@ubitux> hevc_idct_4x4_8_c: 389.1
[15:13:00] <@ubitux> hevc_idct_4x4_8_neon: 126.6
[15:13:02] <@ubitux> our ^
[15:13:06] <@ubitux> hevc_idct_4x4_8_c: 389.3
[15:13:08] <@ubitux> hevc_idct_4x4_8_neon: 107.8
[15:13:10] <@ubitux> hevc_idct_4x4_10_c: 418.6
[15:13:12] <@ubitux> hevc_idct_4x4_10_neon: 108.1
[15:13:14] <@ubitux> libav ^
[15:13:30] <@ubitux> so yeah, we can probably trash our versions here
Merged-by: James Almer <jamrial@gmail.com>

This should refer to the existing SPS structure, not the VAAPI sequence
parameter buffer (which is not yet initialised).
Signed-off-by: Jun Zhao <jun.zhao@intel.com>
Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>
Signed-off-by: Mark Thompson <sw@jkqxz.net>

Fixes 256-colour dvb subtitle encoding.

Fixes ticket #6769.

Adds a hunk forgotten in 8a6799d2

Fixes the following warning:
libavfilter/tests/filtfmts.c: In function ‘main’:
libavfilter/tests/filtfmts.c:103:18: warning: assignment discards ‘const’ qualifier from pointer target type

* commit '75ef9154':
  configure: Disable inline assembly for PathScale compilers
Merged-by: James Almer <jamrial@gmail.com>

* commit 'fe6eea99':
  nsvdec: don't ignore the return value of av_get_packet()

This commit is a noop, see
edf1cb7a
8d7ce5cdMerged-by: James Almer <jamrial@gmail.com>

* commit 'd4f3c26b':
  rtmpproto: send swfverify value as swfurl if latter is unused

This commit is a noop, see c0b3781bMerged-by: James Almer <jamrial@gmail.com>

* commit 'd6390090':
  configure: Skip check for inline assembly capabilities when explicitly disabled
Merged-by: James Almer <jamrial@gmail.com>

* commit '083ea876':
  APIchanges: Update bump dates
Merged-by: James Almer <jamrial@gmail.com>

* commit '8c616b3b':
  avplay: Use the named syntax for buffersrc arguments

This commit is a noop, see 251f3987Merged-by: James Almer <jamrial@gmail.com>

* commit '883ce264':
  vf_showinfo: Display spherical properties
Merged-by: James Almer <jamrial@gmail.com>

* commit '3f128fc4':
  vf_showinfo: Simplify reporting stereo3d information
Merged-by: James Almer <jamrial@gmail.com>

* commit '5f90ad99':
  spherical: Change types of bounding and pad to uint32_t

This commit is a noop, see f20bcec4Merged-by: James Almer <jamrial@gmail.com>

* commit '35cf146a':
  lavu: Drop deprecated av_dlog macro
Merged-by: James Almer <jamrial@gmail.com>

* commit '619a433e':
  lavu: Drop deprecated option type
Merged-by: James Almer <jamrial@gmail.com>

* commit 'dd343fd9':
  lavu: Drop deprecated VDPAU pixel formats
Merged-by: James Almer <jamrial@gmail.com>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

* commit '0648dec1':
  lavc: Drop deprecated stream codec tag
Merged-by: James Almer <jamrial@gmail.com>

* commit '94eed68a':
  lavc: Drop deprecated options moved to private contexts
Merged-by: James Almer <jamrial@gmail.com>

Deprecated in 07/2015.
Signed-off-by: James Almer <jamrial@gmail.com>

* commit 'c43a96fe':
  lavc: Drop deprecated time_base variable for decoding

This commit is a noop. The API has been postponed.
Merged-by: James Almer <jamrial@gmail.com>

Deprecated in 08/2014.
Signed-off-by: James Almer <jamrial@gmail.com>

* commit '48bb0da0':
  lavc: Drop deprecated way of setting audio delay on encode
Merged-by: James Almer <jamrial@gmail.com>

* commit '5182a28b':
  lavc: Drop deprecated global afd field
Merged-by: James Almer <jamrial@gmail.com>

* commit '4476027d':
  lavc: Drop deprecated avctx codec name
Merged-by: James Almer <jamrial@gmail.com>

* commit 'bb45d112':
  lavc: Drop deprecated codec flags
Merged-by: James Almer <jamrial@gmail.com>

* commit '30255483':
  lavc: Drop deprecated unused public members
Merged-by: James Almer <jamrial@gmail.com>