The Soundflower input device supports 64 channels.

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

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

Fix trac ticket #3380.

Fix trac ticket #2899.

Make ff_parse_channel_layout() accept unknown layouts too.

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

This is mostly automated global search and replace

The deprecated aconvert filter is disabled, if it still has users
it should be updated

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

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

TODO: The first argument can be seperated into its own AVOption

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

pan=stereo: FL < FL + 0.5*FC + 0.6*BL + 0.6*SL : FR < FR + 0.5*FC +
0.6*BR + 0.6*SR

didn't actually work ('Expected out channel name, got " FL < FL"')

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

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

Also: fix af_pan and af_aresample, that forgot to update
audio->channels.

This is following 568c70e79e.

Based on patch by Anton Khirnov
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Also remove it in once case when it is not needed.

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

Fixes CID718988
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Some implementations of sscanf do not handle a space before a trailing %n
properly.

As an example, MSVC's does this for the second insatnce in this patch, for
an input of "0x3:c0=c1:c1=c0":
    1) Match the final "c0" or "c1".
    2) Realize it's at the end of the string.
    3) Check for %n.
    4) There is no %n, but a space instead.
    5) Leave 'len' unitilialized.

So, move it out of the sscanf format strings, and call skip_spaces instead.

This bug does not affect skip_spaces since %n is the first and only formatting
string.

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

The boilerplate states that the files are under LGPL,
but refer the user to the GPL at one place.
These files were (re)implemented specifically for FFmpeg.

Reduce log clutter, consistent with 1a49a169eb.

libavfilter API was designed in order to be clarly distinguished from the
libavcodec API, including avcodec.h in avfilter.h is not going to help to
stick to this principle.

The inclusion of libavutil/audioconvert.h in many files was required
because avcodec.h includes audioconvert.h.

libavfilter/avcodec.h is where the lavc/lavfi interface should be
entirely placed.

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

This allow specifying hexadecimal channel layout, and also handle the
error printing internally.

The planar/packed switch and the packing_formats list is no longer
required, since the planar/packed information is now stored in the sample
format enum.

This is technically a major API break, possibly it should be not too
painful as we marked the audio filtering API as unstable.

avfilter.h is a public header and the unexported audio.h header contains
only internal prototypes.

libswresample takes care of that now.

That is the logical order in which the functions are called,
and there is no longer any need of forward declarations.

libswresample is used in all cases.

Fix broken parsing with pan=2:FL=FR:FR=FL and similar.

At least PTS needs to be copied to avoid breaking options such as -t in
ffmpeg.

Original code by Clément Bœsch.
Parameters parsing and misc enhancements by Nicolas George.