Signed-off-by: Moritz Barsnick <barsnick@gmx.net>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

There is really no need for two aac wrappers, we already have
libfdk-aac which is better. Not to mention that faac doesn't
even support HEv1, or HEv2. It's also under a license which is
unusable for distribution, so it would only be useful to people
who will compile their own ffmpeg, only use it themselves (which
at that point should just use fdk-aac).

Signed-off-by: Josh de Kock <josh@itanimul.li>

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

TODO: bump minor

It's inferior in quality to fdk-aac and has an arguably more problematic
license.

As early as 2012, a HydrogenAudio user reported:

> It has however one huge advantage: much better quality at low bitrates than
> faac and libaacplus.

(https://hydrogenaud.io/index.php?PHPSESSID=ckiq394pdglka0kj2fin6ij8t7&topic=95989.msg804633#msg804633)

I myself have made a few spectrograms for a comparison of the two
encoders as well. The FDK output is consistently better than the
libaacplus one, in all bitrates I tested.

libaacplus license is 3GPP + LGPLv2. 3GPP copyright notice is completely
proprietory, as follows:

> No part may be reproduced except as authorized by written permission.
>
> The copyright and the foregoing restriction extend to reproduction in
> all media.
>
> © 2008, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC).
>
> All rights reserved.

(The latest 26410-d00 zip from 3GPP has the same notice, but the copyright
year is changed to 2015)

The copyright part of the FDK AAC license (section 2) is a copyleft
license that permits redistribution under certain conditions (and
therefore the LGPL + libfdk-aac combination is not prohibited by
configure):

> Redistribution and use in source and binary forms, with or without
> modification, are permitted without payment of copyright license fees
> provided that you satisfy the following conditions:
>
> You must retain the complete text of this software license in
> redistributions of the FDK AAC Codec or your modifications thereto in
> source code form.
>
> You must retain the complete text of this software license in the
> documentation and/or other materials provided with redistributions of
> the FDK AAC Codec or your modifications thereto in binary form.
>
> You must make available free of charge copies of the complete source
> code of the FDK AAC Codec and your modifications thereto to recipients
> of copies in binary form.
>
> The name of Fraunhofer may not be used to endorse or promote products
> derived from this library without prior written permission.
>
> You may not charge copyright license fees for anyone to use, copy or
> distribute the FDK AAC Codec software or your modifications thereto.
>
> Your modified versions of the FDK AAC Codec must carry prominent
> notices stating that you changed the software and the date of any
> change. For modified versions of the FDK AAC Codec, the term
> "Fraunhofer FDK AAC Codec Library for Android" must be replaced by the
> term "Third-Party Modified Version of the Fraunhofer FDK AAC Codec
> Library for Android."

Explain better which environment is discouraged and mention the
shortcuts names.

Signed-off-by: Martin Storsjö <martin@martin.st>

We already have a dependency on awk and bc is sometimes not found in the
base system.

Signed-off-by: Martin Storsjö <martin@martin.st>

Fix double UTF-8 encoding on output files.
makeinfo / texi2any does not seem to provide a way of setting
it globally for toplevel files.

It's better to steer users at these, since they are both better
and more alive than the mingw.org versions.

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

It's better to steer users at these, since they are both better
and more alive than the mingw.org versions.

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

texi2html is deprecated by upstream in favor of makeinfo/texi2any. See:

- https://www.gnu.org/software/texinfo/manual/texinfo/html_node/texi2html.html
- https://wiki.debian.org/Texi2htmlTransition
- https://lists.debian.org/debian-devel/2013/05/msg01516.html

This is actually two separate changes.

Based on a patch by Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>.

Fixes Trac ticket #3232.

Signed-off-by: Timothy Gu <timothygu99@gmail.com>

The options is useful to build position-independent executables on
hardened systems (e.g. Android L and Gentoo Hardened).

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

The language and the program that consumes the language are not the same.

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

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

Signed-off-by: Martin Storsjö <martin@martin.st>

Also update the C99 converter URL, since it uses GitHub Releases
to host the binaries now.

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

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

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

Only deprecated things need this at all anymore, as we have functions
to access them or they are no longer needed.

The document should not encourage use of deprecated APIs.

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

This error was somehow missed for months.

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

Ronald deleted his public c99-to-c89 repository today.

ffmpeg.arrozcru.org is currently unmaintained, and it redirects to
ffmpeg.zeranoe.com.

This location contains prebuilt binaries as well.

Signed-off-by: Martin Storsjö <martin@martin.st>

This adds support for building on Plan 9 x86-32.  The compat/plan9
directory contains these items:

- replacements for the 'head' and 'printf' shell commands
- wrapper for main() to disable FPU exceptions

Larger required changes to the system are described in the
documentation.

Signed-off-by: Mans Rullgard <mans@mansr.com>

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

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

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

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

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

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

This practice is not supported by the MinGW developers, and even requires
patching the MinGW runtimes in newer versions. Furthermore, we now support
build with MSVC, so this section is rendered useless.

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

This works just fine, and has for quite a while, using the mingw-get
installer.

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

This is the toolchain most use to build.

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

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

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

This practice is not supported by the MinGW developers, and even requires
patching the MinGW runtimes in newer versions. Furthermore, we now support
build with MSVC, so this section is rendered useless.

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

This works just fine, and has for quite a while, using the mingw-get
installer.

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

This is the toolchain most, including Libav's nightlies, use to build.

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

Fix some orthography, wording and grammar issues; update the SDL section
with more current instructions; simplify lib.exe example command line;
drop outdated comments about libnut.

libschroedinger is the preferred way to decode Dirac video.