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strtok_r is not needed any more, so remove it from configure.

A threading type might be detected originally, but later disabled
if one of its dependencies is unavailable.

This makes sure that the threading support item in the configure
output is right for setups where w32threads are available but
native atomics aren't.
Signed-off-by: Martin Storsjö <martin@martin.st>

Almost all of the code is shared so there is little point in
enabling one decoder/encoder without the other.

Almost all of the code is shared so there is little point in
enabling one decoder without the other.

These codecs compile all of the MJPEG code anyway, so there is little
point in not enabling the MJPEG decoder directly. This also simplifies
the dependency declarations for the MJPEG codec family.

This codec compiles all of the SP5X code anyway, so there is little
point in not enabling the decoder directly. This also simplifies the
dependency declaration for the AMV decoder.

The vector dequantization has a test in a loop preventing effective SIMD
implementation. By moving it out of the loop, this loop can be DSPized.

Therefore, modify the current DSP implementation. In particular, the
DSP implementation no longer has to handle null loop sizes.

The decode_hf implementations have following timings:

For x86 Arrandale:
        C  SSE SSE2 SSE4
win32: 260 162  119  104
win64: 242 N/A   89   72

The arm NEON optimizations follow in a later patch as external asm. The
now unused check for the y modifier in arm inline asm is removed from
configure.

Based on a patch by Andrew Kelley <superjoe30@gmail.com>
Signed-off-by: Diego Biurrun <diego@biurrun.de>

Framerate is now a sane rational instead of an integer, and
inputDepth is changed to what it actually is.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Based on x264 code
Signed-off-by: James Almer <jamrial@gmail.com>

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

Moving cpunop from the HAVE_LIST to the ARCH_EXT_LIST_X86 has the side
effect of enabling it. The semantics of the check have to be changed
from enable if successful to disable if unsuccessful. This was missing
in 2b0bb699 causing build errors with
nasm.

clang-3.4 and gcc-4.9 have it.

It is a processor feature, so it belongs there.

The dependency is indirect through the h263/mpegvideo code.
CC: libav-stable@libav.org

Also add warning comment about threading implementations without matching
atomics implementation to the atomics fallback implementation.

Also drop support for building examples in library directories.

Bug-Id: 635

Loadable plugins were removed in d010e95f.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Does not contain cursor rendering yet.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Fixes dependency file generation with gas-preprocessor.pl and clang.
Flags copied from GCC and tested with Apple's clang from Xcode 5 and
5.1 and clang 3.2, 3.3, 3.4 on Linux.

This prevents the default HOSTCFLAGS from getting clobbered by flags
passed to configure on the command line.

This allows for slightly cleaner dependency specification.

NEON and VFP are currently mandatory for all ARMv8 profiles. Both are
handled as extensions as far as cpuflags are concerned. This is
consistent with handling x86_64 which always has SSE2, but still
handles it as an extension.

Stack is always 16 byte aligned and clz, 64bit operations and unaligned
memory access are fast in aarch64 mode on ARMv8.
Signed-off-by: Janne Grunau <janne-libav@jannau.net>

All copyright holders have agreed to the relicensing.

Signed-off-by: Martin Storsjö <martin@martin.st>

This is pretty much based on the same test for XMM registers.
Signed-off-by: Martin Storsjö <martin@martin.st>

Cleanup by Diego Biurrun.
Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>

Previously, if neither of the checks for the closesocket function
succeeded, we still kept winsock2.h and networking in general
enabled.

When targeting the WinRT API subset, the winsock2.h header is
available (making the check for it succeed, giving the impression
that winsock is available), but tests that actually try to use
such a function will fail. In this case, disable the winsock2.h
feature and networking in general, as if the winsock2.h header
test would have failed in the first place.
Signed-off-by: Martin Storsjö <martin@martin.st>

The freetype tutorial suggests to use #include FT_FREETYPE_H.

Bug-Id: 616

New versions of FreeType have moved the location of their API
header(s) and hide the location behind a macro.

Since the location changes between versions and no other way
to know the location exists, this workaround becomes necessary.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

This avoids false positive enabling of w32threads if explicitly
requested on the command line, but dependencies are missing.