If a read fails, the current code will free the data but leave the size
non-zero. Make sure the size is zeroed in such a case.

CC: libav-stable@libav.org
Bug-Id: 1001
Found-By: Kamil Frankowicz
Signed-off-by: Sean McGovern <gseanmcg@gmail.com>

In H.264 section 8.2.1, we have that "The bitstream shall not contain
data that result in Min(TopFieldOrderCnt, BottomFieldOrderCnt) not
equal to 0 for a coded IDR frame".  This fixes the encoder to always
conform to this - previously the POC values formed an unbroken
sequence, not resetting to zero on IDR frames.
Signed-off-by: Mark Thompson <sw@jkqxz.net>

10-bit surface support was added in libva 1.6.2, earlier versions
support H.265 encoding in 8-bit only.

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

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

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

CC: libav-stable@libav.org

This fixes includedir lines in pkg-config files broken after 92db5083.

Use a tab instead of two spaces, skip the fate prefix for the test name.

This makes IGNORE line fit in even better with the other make printouts.
Signed-off-by: Martin Storsjö <martin@martin.st>

Otherwise the .rep file would still contain a signal instead of a
zero, even if the process returned success.
Signed-off-by: Martin Storsjö <martin@martin.st>

This can be useful to filter out noise in known-broken scenarios like
miscompilation by legacy compilers and similar.

Originally based on a patch by Diego Biurrun.
Signed-off-by: Diego Biurrun <diego@biurrun.de>

The (required) version numbers disappeared after edb43487.

The codec id for SRT was changed and conditionals were not updated.

A negative chunk size is illegal and would end up used as
length for memcpy, where it would lead to memory accesses
out of bounds.
Found-by: Paul Cher <paulcher@icloud.com>

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

This moves work from the configure to the Make stage where it can
be parallelized and ensures that pkgconfig files are updated when
library versions change.

Bug-Id: 449

This moves work from the configure to the Make stage where it can
be parallelized and ensures that shared libraries are built with
the right version number in the filename.

This unclutters the top-level directory and groups related files together.

By default it is -1.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

This fixes build failures for iOS, broken since cad42fad.
Signed-off-by: Martin Storsjö <martin@martin.st>

Calling ff_h264_field_end() when the per-field state is not properly
initialized leads to all kinds of undefined behaviour.

CC: libav-stable@libav.org
Bug-Id: 977 978 992

For field picture, the first_field is set based on its previous value.
Before this commit, first_field is set when reading the picture
coding extension. However, in corrupted files there may be multiple
picture coding extension headers, so the final value of first_field that
is actually used during decoding can be wrong. That can lead to various
undefined behaviour, like predicting from a non-existing field.

Fix this problem, by setting first_field in mpeg_field_start(), which
should be called exactly once per field.

CC: libav-stable@libav.org
Bug-ID: 999

CC: libav-stable@libav.org
Bug-Id: 981
Found-By: Agostino Sarubbo

CC: libav-stable@libav.org
Bug-Id: 981
Found-By: Agostino Sarubbo

When the input string is too large, so the second condition in if ()
fails, the code will erroneously execute the else branch, indexing the
mac_to_unicode table with a negative index.

CC: libav-stable@libav.org
Bug-Id: 1000
Found-By: Kamil Frankowicz

Partially based on a patch by Timo Rothenpieler <timo@rothenpieler.org>.
Additional scaling list handling fix by Jun Zhao <mypopydev@gmail.com>.

Certain hardware decoding APIs are not guaranteed to be thread-safe, so
having the user access decoded hardware surfaces while the decoder is
running in another thread can cause failures (this is mainly known to
happen with DXVA2).

For such hwaccels, only allow the decoding thread to run while the user
is inside a lavc decode call (avcodec_send_packet/receive_frame).

It should only be set after the decoder state has been fully initialized
for using that SPS.
Fixes possible invalid reads on get_format() failure.

CC: libav-stable@libav.org

This mapping has nothing to do with decoder implementations, so using
decoder names is wrong.

This allows enabling or disabling the library-related variables from
within the function instead of doing it manually outside of it.

Check for and link against user32 instead, which also fixes
the missing dependency of dxva2 on user32 with MSVC.

Without any optimization flags, MSVC does no dead code elimination (DCE) at
all, even for the most trivial cases. DCE is a prerequisite for building libav
correctly, otherwise there are undefined references to functions for other
architectures and disabled components.

-O1 is the minimal optimization flag for MSVC that does include DCE.