The lavf-ffm test results change because ffmenc writes
AVCodecContext.flags/flags2 and the defaults for those change.

This allows combining multiple conditionals in a single statement.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

MVDATA may or may not be transmitted. If it is not, both
dmv_x and dmv_y is to be assumed zero.

This may not trigger wrong picture in all systems, but
it's a bug nevertheless. Fixes SA10116.vc1 on my 64-bit
Windows 7.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Based in part by a fix from Michael Niedermayer <michaelni@gmx.at>

Fixes CVE-2011-3947

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind

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

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind

CC: libav-stable@libav.org

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind

CC: libav-stable@libav.org

Previously, it would not be read if refdist_flag was not set, however
according to the spec and the reference decoder, it should always be read.

Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>

The MDCT buffers in the decoder are only sized for up to 11 bits. The
reverse engineered documentation for WMA1/2 headers say that that for
all samplerates above 32kHz 11 bits are used. 12 and 13 bit support
were added for WMAPro. I was unable to make any Microsoft tools generate
a test file at a samplerate above 48kHz.

Discovered by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind

CC: libav-stable@libav.org

Prevents a crash of VLC during playback of a invalid matroska file,
found by John Villamil <johnv@matasano.com>.

CC: libav-stable@libav.org

Found by John Villamil <johnv@matasano.com>

Current code only writes 8 pixels of vertical edge for YUV422, which
causes MC artifacts when subsequent frames use data from that edge.

When the length is the escape value (15), the new length is calculated by
15 + get_bits(8) - 1.

Signed-off-by: Alex Converse <alex.converse@gmail.com>

Stereo ADPCM IMA WS is planar for VQA version 3 and 2-sample interleaved for
VQA version 2.

The stereo layout and extradata is significantly different from that in
Westwood IMA ADPCM, so a separate codec_id is warranted.

Although it has been deprecated for a long time, its intended
replacement (request_channel_layout) is not actually used anywhere, so
request_channels is currently the only way to access that functionality.

It has been deprecated only recently.

Found by John Villamil <johnv@matasano.com> in fuzzed rv20 in mkv files.

Signed-off-by: Alex Converse <alex.converse@gmail.com>

Signed-off-by: Alex Converse <alex.converse@gmail.com>

Signed-off-by: Alex Converse <alex.converse@gmail.com>

Signed-off-by: Alex Converse <alex.converse@gmail.com>

This should be moved to tablegen at some point.

Signed-off-by: Alex Converse <alex.converse@gmail.com>

Signed-off-by: Alex Converse <alex.converse@gmail.com>

Signed-off-by: Alex Converse <alex.converse@gmail.com>

Signed-off-by: Alex Converse <alex.converse@gmail.com>

Also fix a typo.

Signed-off-by: Alex Converse <alex.converse@gmail.com>

Signed-off-by: Alex Converse <alex.converse@gmail.com>

Macroify sanity checks and check return values of allocs and other functions.

Signed-off-by: Alex Converse <alex.converse@gmail.com>

Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>

This matches the spec as well as the reference decoder, and fixes a bug
with interlaced frame decoding.

Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>

Reported and reviewed by Derek Buitenhuis.

Signed-off-by: Janne Grunau <janne-libav@jannau.net>