This makes linking succeed for tools that include config.h but
don't link to libavutil.
Signed-off-by: Martin Storsjö <martin@martin.st>

The indirection was used to abstract from the different -regression.sh
scripts. Now that only one remains, this indirection is pointless.

Prevent spurios EIO on EOF.

CC:libav-stable@libav.org

Notwithstanding the return value the frame should be freed if
is not going to be used.
Reported-by: Matthew Wolenetz <wolenetz@chromium.org>

Fix the mispresented EINVAL for EOF on partial files, among the other.

0.1 seconds at 25 fps is exactly 2.5 frames, which may be rounded either
to 2 or 3 on different platforms.

The scale filter depends on sws, resample on lavr, and movie on lavf and
lavc.

Fixes Bug 502.

They are now used for -ss/-t

It is incompatible with refcounted frames and since it's been deprecated
for a long time now, fixing it is not worth the effort.

They are not guaranteed to be aligned.
Fixes Bug 503.

CC:libav-stable@libav.org

Fixes memory leak in fate-redcode-demux.

Fixes Fate tests on big-endian configs.

Use bitfields in FormatEntry array to avoid wasting an int for each flag.

Every other pixel had the alpha channel taken from the wrong
row.

This fixes bug 504.

CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>

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

Signed-off-by: Diego Biurrun <diego@biurrun.de>

The function is only instantiated once, so there is no point
in keeping it in a template file.

RIFF chunks are aligned to 16bit according to the specification.

Bug-Id:500
CC:libav-stable@libav.org

Ease switching version in the future and make evident why that value.

The function is possibly called once per block.

When targeting the "windows store application" (metro) API subset
(or the windows phone API subset), the getenv function isn't
available. If it is unavailable, just define getenv to NULL.

The check uses check_func_headers, since the function actually
might exist in the libraries, but is hidden in the headers.

The fallback is in config.h since msvc can't do -D defines with
parameters on the command line, and it's used both within the
libraries and the frontend applications (so a libavutil internal
header wouldn't be enough).
Signed-off-by: Martin Storsjö <martin@martin.st>

The functions which actually drive the filter graph by pushing
frames through it need to ensure an aligned stack for SIMD functions.

This fixes a crash in YADIF filter when using a mingw build in a MSVC
application.
Signed-off-by: Martin Storsjö <martin@martin.st>