Decode times for big_buck_bunny_720p_stereo:

1 thread:
real    1m14.227s
user    1m13.104s
sys     0m1.108s

2 threads: (33% faster)
real    0m49.329s
user    1m33.735s
sys     0m1.834s

3 threads: (44% faster)
real    0m41.593s
user    1m44.884s
sys     0m1.967s
(cherry picked from commit d23845f3)

(cherry picked from commit f2146944)

As a side effect of the last commit, avcodec_open() now calls it automatically,
so there is no longer any need for clients to call it.
Instead they should set AVCodecContext.thread_count.

avcodec_thread_free() is deprecated, and will be removed from avcodec.h at the
next MAJOR libavcodec bump.

Rename the functions to ff_thread_init/free, since they are now internal.
Wrappers are provided to maintain API compatibility.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit c0b102ca)

(cherry picked from commit 8e8cc52b)

See doc/multithreading.txt for details on use in codecs.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

(cherry picked from commit c2bd7578)

Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit e4e234fa)

Also allow qmin/qmax to go up to 69 (the current max value for libx264).  This
will have to increase when we add 9/10-bit support.
(cherry picked from commit c7ac200d)

Due to being pants-on-head retarded, libavcodec defaults this to zero, which
results in broken output.  This didn't affect ffmpeg.c, which sets it itself,
but caused problems for other calling apps using VBV.
(cherry picked from commit f7f8120f)

Currently uses AV_RL32 instead of AV_RL32A, as the latter doesn't exist yet.
(cherry picked from commit 62457f90)

Fix emu_edge_v_extend_15 to be <128 bytes on Win64, by being more strict
on the size of registers and which registers are being used for operations
where multiple are available. This fixes segfaults in emulated_edge()
function calls on Win64.
(cherry picked from commit 17cf7c68)

It is useful for applications that hand input data directly to lavf via
a ByteIOContext.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit 3940caad)

There is no need to pass the ByteIOContext via a pointer to a pointer
anymore.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit aad216fd)

It never reopens the bytestream anymore.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit 4d016dd4)

Currently (since the data_offset fix) the ogg demuxer assumes that
after the first non-header packets in any stream no more header packets
will follow.
This is not guaranteed, so change the code back again to wait until it
has finished the headers for all streams before returning from ogg_get_headers.

This fixes issue 2428.
Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit 6bd69e6a)

Haiku does not have a separate libm, so do not try to link to it.
Signed-off-by: François Revol <revol@free.fr>
Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit f59c4bd6)

This cleanup patch updates the developer documentation with respect to
the migration to the git scm.
(cherry picked from commit 87800dc2)

In all 3 cases, the decoding continues and thus a warning would be sufficient.
Helps application that catch them with own log handers to handle them
accordingly.
Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit ae210479)

(cherry picked from commit 7ab8758b)

It was removed in fe9a3fbe since it had the wrong value. Add profile name
for it.
(cherry picked from commit 440b6169)

See thread:
Subject: [PATCH] movie video source
Date: 2010-12-31 15:35:30 GMT
Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>

The fixes were pointed out by Diego.
Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>
(cherry picked from commit 0cad24ce)

Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>
(cherry picked from commit 77d4ed7a)

Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>
(cherry picked from commit a4effe43)

Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>
(cherry picked from commit f4acb837)

This adds NEON optimised versions of all functions in VP8DSPContext.
Based on initial work by Rob Clark.
Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit a1c1d3c0)

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit 90e8a9c3)

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit 44ddfd47)

This validate the length of a mkv element directly after reading
it.
This has the advantage that it is easy to add new limits and makes
it less likely to forget to add checks and also avoids issues like
bits of the length value above the first 32 being ignored because
the parsing functions only takes an int.
Previously discussed in the "mkv 0-byte integer parsing" thread.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit 95ec3d4c)

Change int64_t into a int, which caused this compiler warning:
libavformat/oggparseskeleton.c:64: warning: passing argument 2 of ‘av_reduce’ from incompatible pointer type
(cherry picked from commit 69ff1492)

Use avio functions instead of bytestream ones (also drops dependency on
lavc and removes a bunch of warnings).
Drop custom version of avio_get_str16 and use that instead.

Tested on mewmew-ssa.avi sample.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit 47fdf00a)

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit 19711af5)

Fixes issue 2475.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit b3190529)

Makes playing QDMC files in MPlayer work when using the libavformat demuxer.
Problem was that the extradata was not passed from demuxer to decoder.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit ed19fafd)

NASM versions older than 2.08 fail to build ffmpeg with several
"error: operation size not specified" errors but this is not caught in
configure.

Fix that by checking if "pextrd [eax], xmm0, 1" works in configure.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit 48545a8f)

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>

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