As defined by the specification.

Moving option definition to h264 implementation and fixing command line defaults
in order to properly respect cavlc input value
Signed-off-by: Zhong Li <zhong.li@intel.com>
Signed-off-by: Maxym Dmytrychenko <maxim.d33@gmail.com>

Software plugin is not available on Linux, Only works on Windows.
Similar changes have been applied to qsv hevc encoder by
b05128f3.
Signed-off-by: Zhong Li <zhong.li@intel.com>
Signed-off-by: Maxym Dmytrychenko <maxim.d33@gmail.com>

The only purpose of dllexport (which is set while building the library
that exports the symbols) is to have the linker automatically
export such symbols into a DLL without using a def file - it doesn't
affect the generated code.

For both MSVC and mingw builds, this isn't essential since we override
what symbols to export via an autogenerated def file instead.

Update a comment in configure to refer to the right concept.

With lld, this avoids warnings about duplicate export directives,
when some symbols are requested to be exported both via dllexport
attributes and via the autogenerated def file.

This also reduces the number of lines of code marginally.
Signed-off-by: Martin Storsjö <martin@martin.st>

This avoids having to use either "dumpbin -headers" to find out
the current architecture, or pass $ARCH from configure to deduce it.

When configuring with --disable-asm, ARCH is equal to "c", which doesn't
give any indication of what symbol prefix is to be used.
Signed-off-by: Martin Storsjö <martin@martin.st>

- Move a variable closer to where it is used
- Add an explanatory comment
- Simplify a crosscompile check
- Minor SHFLAGS simplification
- Coalesce some threads tests

It must imply clean. Regression since 7ebe7e8e.
Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>

SEI headers should be inserted as generic raw data (the old specific
type has been deprecated in libva2).

With pre-2.0 Intel drivers in CBR mode, if an explicit SEI message with
the old (now deprecated) type is not included, the driver generates and
inserts some timing SEI which is almost certainly invlaid.  Before
7a4fac5e we always inserted our own SEI
so this would not be visible, but since then it has been possible to
disable that.  We would also like to avoid using the deprecated type,
and using the new type, while working in old drivers, does not suppress
the spurious message like the old type does.

Therefore, suppress the bad SEI insertion by providing a zero-length
buffer with the old type, which the driver can insert harmlessly.

Fixes invalid reads after free.
Signed-off-by: James Almer <jamrial@gmail.com>

This fixes segmentation faults due to stack-overflow caused by too deep
recursion.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Sean McGovern <gseanmcg@gmail.com>

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

Bug-Id: 1098
Cc: libav-stable@libav.org
Signed-off-by: Sean McGovern <gseanmcg@gmail.com>

Also only update config.sh when it changed to avoid spurious rebuilds.

The files are no longer generated by configure, so they should not
be removed by the distclean target any longer.

Regression since 569d18aa.

Bug-Id: 1055
Cc: libav-stable@libav.org

Fixes looping files without audio or when using stream_copy, where
ist->nb_samples is not set since no decoding is done.
Signed-off-by: Diego Biurrun <diego@biurrun.de>

track->video.projection.type is set to 0 (a Matroska specific "No spherical
metadata present" value, with no related AVSphericalMapping) by default on
files without the element.

This removes bogus warnings on every single matroska file without Spherical
metadata.
Signed-off-by: James Almer <jamrial@gmail.com>

This avoids issues linking to a DLL version of libspeex, since the
libspeex headers lack proper dllimport declarations for the data
symbols.

This isn't an issue when building with mingw with GNU binutils, since
GNU ld can fix up that kind of data import automatically.

libspeexdec.c already uses speex_lib_get_mode as well.
Signed-off-by: Martin Storsjö <martin@martin.st>

This reverts commit 4822ee3c.
AIX is a fringe oddity. Do not clutter the main codepath with AIX workarounds.

- Move generating config.fate to a more sensible place.
- Move printing warnings to a more appropriate place.
- Improve "generated by" comment in libavutil/avconfig.h.
- Drop pointless informative output about generating config files.
- Write a standard comment header to config.asm as well.

- Reuse sanitize_var_name() where appropriate
- Add some quotes to enabled()/disabled() to ease readability
- Fix logged names of some helper functions
- Filter LDFLAGS also in test_ldflags()

There shouldn't be any functional difference between the import
library created by dlltool and the one produced by the linker itself.
Keep installing it with both names though, for compatibility with users
that expect both to exist.

The dlltool step was added in ec10a9ab; prior to that, a MSVC
compatible import library was generated using lib.exe. After that
commit, there was no functional difference between the two import
libraries (and since MSVC 2012, link.exe works just fine with the
GNU binutils generated one).
Signed-off-by: Martin Storsjö <martin@martin.st>

Leads to setting of DefaultDuration in Matroska muxer based on frame rate instead of timebase.
Fixes playback in Chrome.
Signed-off-by: Peter Große <pegro@friiks.de>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Anton Schubert <ischluff@mailbox.org>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Some encoders do not output further IDRs if not requested to.

The message callbacks are library-safe in libva2, so we can now use
them.

This is an ABI change in libva2: previously the Intel driver had this
behaviour and it was implemented as a driver quirk, but now it is part
of the specification so all drivers must do it.

This has been deprecated in libva2 because hardware does not and will not
support it.  Therefore never consider it for decode, and for encode assume
the user meant constrained baseline profile instead.