And manage the reallocation failure path.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

Fix some buffer overreads.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

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

The Mach-O bug was fixed in yasm 0.8.0 and we don't
support versions that old anymore.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

This is in preparation for removing a .rodata kludge
which was only required for older YASM versions.

The movbe instruction was introduced in 0.8.0, which already
had AVX, which was introduced in 0.7.0, and NASM introduced
movbe in 2.0.3, which is the same version which introduced
AVX support.

Also, make the failure message more accurate.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

Prevents a crash if the misaligned exception mask bit is
cleared for some reason.

Misaligned SSE functions are only used on AMD Phenom CPUs
and the benefit is miniscule. They also require modifying
the MXCSR control register and by removing those functions
we can get rid of that complexity altogether.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Small backports that sneaked into other asm commits in x264.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

This is also a valid value for WIN64.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Store XMM6 and XMM7 in the shadow space in functions that
clobbers them. This way we don't have to adjust the stack
pointer as often, reducing the number of instructions as
well as code size.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

For when we want to mix simd sizes within one function.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

SWAP with >=3 named (rather than numbered) args
PERMUTE followed by SWAP with 2 named args
used to produce the wrong permutation
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Reduces code size because movaps/movups is one byte
shorter than movdqa/movdqu.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

The implementation of 25cb0c1a involves lots of spurious labels.

The effect of keeping those labels around is making debugging harder.
Those labels are meaningless, and complicate the disassembly. Also,
gdb can't tell the difference between them and function entry points.

This new strip command is irrelevant to any usage of Libav that would
have used the old fully stripped version, because the old one was for
non-debug use.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Now RET checks whether it immediately follows a branch, so the
programmer dosen't have to keep track of that condition. REP_RET
is still needed manually when it's a branch target, but that's
much rarer.

The implementation involves lots of spurious labels, but that's OK
because we strip them.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

This avoids building mmxext and sse2 code when disabled by configure.

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

The function does not depend on MMX and compilation without MMX enabled
fails if the function is compiled conditional on MMX availability.

Lanczos for general case, sinc for upscaling, Gaussian for
downscaling. According to current literature these scalers
should be the best quality-wise algorithms for each case.

Inspired from a patch by wm4 <nfxjfg@googlemail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

This avoids building mmxext and sse2 code when disabled by configure.

Provide some information for every function and add a group.

This reduces the risk for overflow in pathlogical cases.
Signed-off-by: Martin Storsjö <martin@martin.st>

If the input file contains other tracks (non video/audio) that
aren't included in ismindex, the global file duration as returned
by libavformat might not be equal to the maximum of the duration
of the actual included tracks.
Signed-off-by: Martin Storsjö <martin@martin.st>

The stream duration is used for calculating the duration of the
last fragment easily without manually parsing anything else than
the mfra/tfra atoms. When the global file duration was used
previously, the duration of the last fragment could end up wrong
if the streams weren't equally long.
Signed-off-by: Martin Storsjö <martin@martin.st>

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

fdct is only initialized if encoders are enabled.

This wasn't an issue prior to 58404738, when the whole RTMP packet
was copied at once and the length of the individual embedded flv
packets only were validated by the flv demuxer.

Prior to this patch, this could lead to reads and writes out of bound.
Signed-off-by: Martin Storsjö <martin@martin.st>

If the embedded flv packets were incomplete and we aborted the
copying loop early, make sure the flv buffer is trimmed to
only contain full packets.
Signed-off-by: Martin Storsjö <martin@martin.st>

update_offset is also called from handle_metadata, where the
packet header sizes is already included in the size.

Previously this lead to flv_data/flv_size including 15 uninitialized
bytes at the end after each call to handle_metadata, making the
flv demuxer lose sync with the stream.

Also remove leftover copying in handle_metadata. This is a leftover
from the refactoring in 58404738. (Previously this final mempcy was
the one that copied all the packets at once, while this is done
within the loop right now.) After making sure flv_size is set to
the right size, this write was out of bounds.
Signed-off-by: Martin Storsjö <martin@martin.st>

This was overlooked in d872fb0f since I assumed all the realloc
issues in the rtmp code was fixed already.
Signed-off-by: Martin Storsjö <martin@martin.st>

The current magic numbers passed are values in seconds, while the
parameter itself should be passed over the wire in milliseconds.

This makes (some/all?) live streams from Red5 work correctly, that
previously returned StreamNotFound even with "-rtmp_live live". After
this commit, the default 'any' also works on these streams.
Signed-off-by: Martin Storsjö <martin@martin.st>

On (certain streams/setups at least on) Red5, the description string
actually is present, but empty. Therefore, first try loading the
description, but if not found or empty, load the code string instead.
The code string is quite understandable in most cases anyway (like
"NetStream.Play.StreamNotFound").
Signed-off-by: Martin Storsjö <martin@martin.st>

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