Mark it as static.

It is only used in one place, and it is small enough that it might be
called directly.

display_matrix_size is only initialized when av_stream_get_side_data()
returns a side data pointer. The code is safe since the only effect this
has is setting the display_matrix pointer to NULL which it was already
anyway.

Bug-Id: 865
CC: libav-stable@libav.org

The first check is done without the AVIOContext, so alloc it only if said check succeeds
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Janne Grunau <janne-libav@jannau.net>

Fixes stack buffer overflow errors detected by address sanitizer in
fate-imc.

CC: libav-stable@libav.org

Fixes stack buffer overflow errors detected by address sanitizer in
various fate tests.

CC: libav-stable@libav.org

Fixes stack buffer overflow errors detected by address sanitizer in
various fate tests.

CC: libav-stable@libav.org

CC: libav-stable@libav.org
Bug-Id: CID 1257774

CC: libav-stable@libav.org
Bug-Id: CID 1292518

CC: libav-stable@libav.org
Bug-Id: CID 1292520

CC: libav-stable@libav.org
Bug-Id: CID 609333

CC: libav-stable@libav.org
Bug-Id: CID 1302711

It is necessary to avoid circular header dependencies.

The main ff_alloc_picture() function is made more generic with all the
parameters necessary as arguments. This will allows to move most of the
related functions to a separate file later.

Right now wrappers are provided to try and minimize the number of
changes in the code.

Use more generic arguments and remove its static attribute since it will
be moved to a separate file.

The C runtime C99 compatibility had been improved a lot and it now
rejects some of the compatibility defines provided for the older
versions.

Many thanks to Ray for the time spent testing.

Bug-Id: 864
CC: libav-stable@libav.org

The channel configuration can be delivered only by the PCE,
try to parse it first and not try to decode until a channel
configuration is set.

CC: libav-stable@libav.org

These are defined in ISO/IEC 14496-3:2009/PDAM 4 for 6.1 and 7.1.
It also defines another 7.1 layout with configuration 14, that one
is not added here for now.

11: 3/3.1    FC FL+FR BL+BR BC LFE
12: 3/2/2.1  FC FL+FR SiL+SiR BL+BR LFE
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

FDK AAC encoder outputs SCE(front)+CPE(front)+CPE(back)+CPE(back) on
MODE_7_1_REAR_SURROUND configuration.
Since decoder couldn't properly map 4 back channels, decoding failed
unless -request_channel_layout 0x8000000000000000 has been specified.
Now we treat first CPE(back) as CPE(side) on channel mapping.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Support only streams with Content-Length.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

The decoder assigns channels using default channel configuration
for 5.1ch when it parses an ADTS frame header using consecutive
channel ids.

When a PCE comes, it reassigns channels using PCE configuration
using directly the ids provided. They can be arbitrary.

Always use consecutive channel ids to avoid decoding glitches due
spurious reconfigurations due the channel ids mismatch between the
two otherwise-identical channel maps.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

And make sure to check INTER_BLOCK as had been fixed by Michael
Niedermayer.

Reported-By: Andreas Cadhalpun
CC: libav-stable@libav.org

Checking this struct is a bit more natural for this dependency.
Signed-off-by: Martin Storsjö <martin@martin.st>

These are only necessary once/if avconv gets support for this hwaccel.
While that obviously is desireable, we don't have it yet, and they
currently only are a distraction.
Signed-off-by: Martin Storsjö <martin@martin.st>

This fixes the side effect of printing the whole environment,
if no --env parameter was provided.
Signed-off-by: Martin Storsjö <martin@martin.st>

This was a regression introduced with d8ffb205.
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Martin Storsjö <martin@martin.st>

Makes the life of the people already setting PKG_CONFIG_PATH simpler.

Useful to have `make config` work with custom pkgconf path.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Make possible to require a combination of
packages and/or pin specific versions.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

The only need to be listed if they are to be used in ifdefs from
within the code - config items used as dependencies only within
configure don't need to be exported.
Signed-off-by: Martin Storsjö <martin@martin.st>

This fixes dxva2 detection (i.e. correctly realizes that it isn't
available) for WinRT, where dxva2api.h does exist, but these definitions
are omitted (when targeting the API subsets).

Ideally we should rather check for e.g. DXVA2_ConfigPictureDecode,
but configure might fail to find that definition due to _WIN32_WINNT
not being set to the right value during configure. (libavcodec/dxva2.h
manually overrides the _WIN32_WINNT define.)

This allows removing hardcoded --disable-dxva2 from such build
configurations.
Signed-off-by: Martin Storsjö <martin@martin.st>