If _WIN32_WINNT is unset, we force it to a new enough value to
make sure the necessary definitions are visible.

When targeting Windows Phone or Windows RT, _WIN32_WINNT should
be at least 0x0602 - otherwise the windows headers themselves
can cause errors (which technically are bugs in the headers).

Raising this value here shouldn't hurt; the alternative would
be to not touch it at all if WINAPI_FAMILY is set to phone/app,
or to force setting it to 0x0602 in configure if unset (for phone/app).
Signed-off-by: Martin Storsjö <martin@martin.st>

When skip_frame is set to _NONKEY the decoder skips everything except intra
slices, which breaks frames that consist of an intra field together with any
other field type; half the frame becomes garbage. This patch fixes the issue by
letting non-intra slices through if they're part of a keyframe.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

its size is invalid in this case
Signed-off-by: Anton Khirnov <anton@khirnov.net>

It got copypasted from the h264 decoder, but it does not apply to mpeg2.

Missing from the push of 3ee21785.

Missing from the push of 3ee21785.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

This change will reject frames with a texture type which does not match
the stream description.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Express bitfields more simply.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Convert doxygen to multiline and express bitfields more simply.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

This option is extremely codec specific and only a few codecs employ it.
Move it to codec private options instead: mpegenc family supports only 3
values, xavs and x264 use 5, and xvid has a different metric entirely.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

For audio encoders, delay has no effect, use the appropriate one,
initial_padding (see 2df0c32e).

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

This macro identifies whether VFPv3 is available; MSVC defaults
to hardfloat (except for older MSVC versions for CE, targeting
ARMv4).
Signed-off-by: Martin Storsjö <martin@martin.st>

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

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

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

if the error correction flag is not set, a packet starts with payload
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Makes it a bit more clear where each test belongs.

Suggested by Anton Khirnov.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

This isn't necessary any longer on MSVC 2013 Update 4.
Signed-off-by: Martin Storsjö <martin@martin.st>

This isn't necessary on MSVC 2015 any longer.
Signed-off-by: Martin Storsjö <martin@martin.st>

This is only necessary on MSVC 2010/2012 (and possibly on some
ICL versions). This both avoids an extra hack on newer MSVC
versions, and better documents what the extra compiler option
is used for.
Signed-off-by: Martin Storsjö <martin@martin.st>

The struct definitions in dxva.h, which are necessary in order to
actually use d3d11va, are hidden when WINAPI_FAMILY targets Windows Phone
or WindowsRT.

Building with WINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP is disallowed
when targeting ARM. ("Compiling Desktop applications for the ARM
platform is not supported.") So we set _CRT_BUILD_DESKTOP_APP to 0
to tell the runtime not to detect some issues with this mismatching.

The same tweaks to detect if the API is available is done in dxva2_internal.h
when compiling each DXVA2/D3D11VA decoders.
Signed-off-by: Martin Storsjö <martin@martin.st>

Fixes alignment issues and bus errors.
Signed-off-by: Martin Storsjö <martin@martin.st>

It will be shared with the upcoming mpeg2 and hevc decoders.

Declare a named enum, not a variable with anonymous enum type.

init() is called whenever format changes, so current code would leak the
fifo in this case.

This is triggerable with the HEVC decoder. It is unclear yet whether the
bug is in the calling code or the MSDK, but it seems better to check for
this in any case.

Fallback to "link" in the path if the one next to cl is not found.
Signed-off-by: Martin Storsjö <martin@martin.st>

The -nologo- option is the inverse of -nologo, reenabling printing the
"logo" version header. This is useful if the compiler actually is a
wrapper that forces -nologo.
Signed-off-by: Martin Storsjö <martin@martin.st>

This fixes the palette on big endian, broken (or, differing from
little endian) since 57214b2f.
Signed-off-by: Martin Storsjö <martin@martin.st>

Some uses of Snappy require uncompressing to positions within
an existing buffer. Also adds a function to get the uncompressed
length of Snappy data.