Include x86-optimized versions for SSE2 and AVX.

Some shells, e.g. minix3, have a broken 'test' builtin which fails
if the first operand of a binary operator looks like a unary operator.
Prefixing the values with 'x' prevents this from happening.
Signed-off-by: Mans Rullgard <mans@mansr.com>

It's got_frame, not data size

Any performance gain from this is negligible and not worth the extra
code.

There is no point in duplicating this code in every get_buffer()
implementation.

It will be useful in the upcoming transition to refcounted AVFrames.

CC: libav-stable@libav.org

The def files are used for generating import libraries for
other toolchains (in particular, for generating import libraries
for MSVC for DLLs built with mingw).

The def files produced by mingw/gcc contains ordinals for each
exported function. When MSVC tools generate import libraries
from such a def file, MSVC links to the DLL by the ordinals
instead of linking by name.

Since the def files aren't maintained by hand, the ordinal
numbers are assigned (more or less) randomly and any caller
linking to the libs by ordinals will break as soon as the libraries
export more/fewer functions.

Therefore, strip out the ordinals from the generated def files,
to make users link to the libraries by name.

Callers linking to the DLLs using the gcc provided import library
link by name as they should.
Signed-off-by: Martin Storsjö <martin@martin.st>

This makes configure honour the compiler default if thumb is not
explicitly enabled or disabled.
Signed-off-by: Mans Rullgard <mans@mansr.com>

They share the same code, so building one w/o the other makes no sense.

Signed-off-by: Mans Rullgard <mans@mansr.com>

Each fate-seek test depends now only on the corresponding fate-acodec,
fate-vsynth2 or fate-lavf test which creates the file seek-tests
operates on. The tests and references are renamed to match the test they
depend on.

Fixes a segfault with fuzzed sample sample_varPAR_s11622_r001-02.avi.

CC: libav-stable@libav.org

Swapping buffer indices allows saving one memcpy that accounts for 1% of the
runtime, according to oprofile.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Mans Rullgard <mans@mansr.com>

When targeting the metro API subset, this function still exists in
the link libraries, but is excluded from the headers. This makes
sure w32threads is automatically disabled when targeting this API
subset (since not all the necessary functions for it are available).
Signed-off-by: Martin Storsjö <martin@martin.st>

Not all versions or API subsets of windows have these functions.
Signed-off-by: Martin Storsjö <martin@martin.st>

Not all versions of windows have the console color functions,
while io.h might be needed for isatty (which can be found in
unistd.h or io.h).
Signed-off-by: Martin Storsjö <martin@martin.st>

The existence of MapViewOfFile isn't linked to the existence of
io.h.

Not all versions of windows have MapViewOfFile (in particular,
Windows Phone 8 and the "metro" windows 8 API subset don't),
while they still have io.h (and need it for open/read/close).
Signed-off-by: Martin Storsjö <martin@martin.st>

This simplifies the condition to avoid hardcoding the systems
where the function exists. This also simplifies support for
newer Windows API subsets where this function doesn't exist,
such as Windows Phone 8 and the "metro" API subset of Windows 8.
Signed-off-by: Martin Storsjö <martin@martin.st>

Fixes linking with only the FLAC encoder enabled.

Also introduce local img_ namespace to simplify debugging.

Fixes mov_h264_aac__Demo_FlagOfOurFathers.mov.SIGSEGV.4e9.656.

Found-by: Mateusz "j00ru" Jurczyk
CC: libav-stable@libav.org

Fixes a segfault in the fuzzed sample resolutionchange.flv_s314809.

CC: libav-stable@libav.org

Fixes build with lavfi disabled.
Signed-off-by: Diego Biurrun <diego@biurrun.de>