AAC specification has 7.1(wide) as a default layout for 8-channel
streams (channel config 7). However, at least Nero AAC encoder encodes
non-wide 7.1 streams using the default channel config 7, mapping the
side channels of the original audio stream to the second
AAC_CHANNEL_FRONT pair in the AAC stream. Similarly, e.g. FAAD decodes
the second AAC_CHANNEL_FRONT pair as side channels, therefore decoding
the incorrect streams as if they were correct (and as the encoder
intended).

FFmpeg currently decodes such files by-the-spec, i.e. after decoding the
original front pair will be in AV_CH_FRONT_x_OF_CENTER and the original
side pair will be in AV_CH_FRONT_x.

As actual intended 7.1(wide) streams are very rare while misencoded 7.1
files actually exist in the wild, default to assuming a 7.1 layout was
intended unless in strict mode.

Fixes playback of e.g. 8_Channel_ID.m4a in samples.
Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Revert "Merge commit '3bc2e89c'" (Bump libavutil major version to account for the LLS API/ABI changes.)

This reverts commit 792845e4, reversing
changes made to 1d6666a6.

Bumping libavutil requires all libraries that use libavutil to have their
major version bumped (yes breakage has been confirmed this is not a hypotheses)

One case of breakage is due to new types being added to AVOptions and
applications that linked to old libavutil and libswresample
then trying to use old libavutil (its soname changed so the old isnt updated)
and new swresample (its soame didnt change so it is updated)
the new swresample contains AVOption types that the old libavutil doesnt
know of thus the application attempting to access these avoptions
fails

AVOptions are used by all libs so the issue can potentially happen with
any other lib, libswresample was just the first that showed the problem
ive not checked if the other libs are affected currently by the same issue
or not

Also in addition to AVOptions, AVFrames are also defined in
libavutil, bumping it without all libs that use AVFrames could lead to
serious inconsistencies when 2 libs/app end up using 2 different libavutils

The alternative of bumping all is still possible after this revert, if it
turns out to be the preferred solution

This ensures that no mvs are uninitialized at the time of loop filtering
Fixes: msan_uninit-mem_7f0b6dfe293c_2786_SA20021.vc1
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  apidoc: fix warning from stereo3d.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '3d9fc21e':
  h264: Refactor decode_frame_packing_arrangement

Conflicts:
	libavcodec/h264_sei.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '3a149e23':
  hevc: Refactor decode_nal_sei_frame_packing_arrangement

Conflicts:
	libavcodec/hevc_sei.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'cfb4ee30':
  fate: add a pngparser test

Conflicts:
	tests/fate/image.mak
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'eddff165':
  fate: add utility function to test parser, demuxer, and decoder
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '6fd99e78':
  png: add a standalone parser

Conflicts:
	Changelog
	libavcodec/png_parser.c
	libavcodec/version.h

See: 2ee6dca3Merged-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>

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>

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

This ensures that theres just one AVFrame allocation function and libs dont
produce multiple AVFrame variants after a minor lib update
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This ensures that the code isnt duplicated and cant become out of sync
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Directly set the fields when necessary.

Directly set the fields when necessary.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Useful for reading png images from a pipe.

Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7f084c646637_9261_top_title_green_frog.gif
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

When joining multicast groups, ffmpeg was using INADDR_ANY as interface address
which leads to enabling the multicast group on the interface with "default gateway".
Often multicast traffic is received over dedicated interface, which scenario ffmpeg was
unable to handle. With this patch, ffmpeg will enable multicast group to the interfaces
configured with address specified in &localaddr= parameter of udp:// URL. To avoid
loacal_addr resolve at udp_close(...) the UDPContext structure was extended with
struct sockaddr_storage local_addr_storage member, which is populated in udp_open(..)
and passed to udp_join_multicast_group()  and udp_leave_multicast_group().
Signed-off-by: Stoian Ivanov <s.ivanov@teracomm.bg>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Its possible to implement this with a few lines less code but it then
would flip the order of the list and require registration of external
codecs to be done first, also it could break user applications due to
this. Thus to maintain ABI this slighty more complex solution is
used.

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

* qatar/master:
  avutil: Remove deprecated intfloat_readwrite code

Conflicts:
	libavutil/intfloat_readwrite.c
	libavutil/intfloat_readwrite.h

The files are left in place as they are still used by some projects
mplayer is one.
Theres no hurry in removing the code, it can as well be removed once
no projects use it anymore
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '11bb5e10':
  build: Define __printf__ to __gnu_printf__ on MinGW*/gcc
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '6d3ea195':
  Bump major of libavfilter for reference counted buffer API changes.

Conflicts:
	libavfilter/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '3bc2e89c':
  Bump libavutil major version to account for the LLS API/ABI changes.

Conflicts:
	libavutil/version.h

Bump done to stay compatible with libav, its not neccessary otherwise for ffmpeg
as we have the new ABI/API under LLS2 and the old (unused) under LLS
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Also deprecate Author, Comment, Copyright, and Title options, and update
docs to use the new Metadata option.

Currently the min and max values are not honored, but this will change in
a following patch.