Signed-off-by: Paul B Mahol <onemda@gmail.com>

Fixes Ticket2177
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes Ticket2219
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes Ticket2155
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The external assembly function uses mmxext instructions and should not be
masqueraded as an mmx-only function. Instead, use the mmx-only inline
assembly function.

These became unused in 71155d7b.
Signed-off-by: Martin Storsjö <martin@martin.st>

Fixes some of the issues with segment.mov

See: 0226 15:16 Joseph Artsimov (2.1K) [FFmpeg-devel] Two problems with MPEG2 decoder
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

this is needed for testing mmx2 functions
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This is consistent with the rest of libavcodec.

This is consistent with the rest of libavcodec.

This is consistent with the rest of libavcodec.

Check whether CQ level is within qmin..qmax and abort on error. If this isn't properly
set, encoding will fail at the first frame.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Allow setting the min quantizer to 0 instead of 1 (libvpx allows 0); fixes #2136
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The specification does not prevent an encoder to write the amplitude 0
as 0 amplitude_bits.

Our get_bits() implementation might not support a zero sized read
properly, thus the additional branch.

Rate and order must not be 0 even if the specification does not say that
explicitly.

Use the commonly used "if (!var)" instead of "if (var == 0)".

The value is used to calculate output LSP curve and a division by zero
and out of array accesses would occur.

CVE-2013-0894

CC: libav-stable@libav.org
Reported-by: Dale Curtis <dalecurtis@chromium.org>
Found-by: inferno@chromium.org
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

"channels" is an int in all the other places in the libraries, and the
av_frame_*_channels() accessors return and set an int, so this should not
implicate ABI breaks.

Previously avctx->hwaccel would have been set to a dummy value,
now an explicit check is necessary instead.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

If there is unsupported subsampling encountered abort
early instead of failing decoding later.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Using the table directly may cause problems on some platforms like msvc
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Damaged frames can lead to a mismatch, which can cause a segfault
due to using an incorrect channel mapping.

CC:libav-stable@libav.org

The init functions marked as av_cold have to be executed in any case,
so there is no gain from trying to mark paths leading to such functions
as unlikely.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This also allows libx264 to modify its i_qfactor value
when using the "-tune" setting. Previously it had a static
value of 1.25
Signed-off-by: Anton Khirnov <anton@khirnov.net>