This breaks libavfilter ABI.

Add atempo audio filter for adjusting audio tempo without affecting
pitch. This filter implements WSOLA algorithm with fast cross
correlation calculation in frequency domain.

Signed-off-by: Pavel Koshevoy <pavel@homestead.aragog.com>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

This filter changes the number of samples on single output operation.

Based on a patch by Andrey Utkin <andrey.krieger.utkin@gmail.com>.

This is more consistent with naming in the rest of Libav.

It will allow adding new fields to it without ABI breaks.

This will allow making AVFilterPad opaque for the calling apps, since
those are the only two fields that can be useful to the users.

The function was introduced in 4d6a8a2bdb and is not used anymore
outside avfilter.c.

This avoids to pollute the public API with an apparently unnecessary
function. The function was introduced a few days ago, so removing it from
the public API should do no much harm.

The function is modelled after av_default_item_name(), and will print the
name of the instance filter if defined, otherwise the name of the filter.

This allows to show the instance name in the log, which is useful when
debugging complex filter graphs.

Those functions are only useful inside filters. It is better to not
support user filters until the API is more stable.

Link properties have to be checked after config_props() is called to
make sure everything is sane, so the default config_props() for output
links was redundant.

Remove now empty defaults.c

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Based on current version of the asplit filter in FFmpeg written by
Stefano Sabatini and others.

The move allows to share the init code already used by split.

Partially based on a patch by Robert Nagy <ronag89@gmail.com>

Allow to explicitly specify the channel layout to select.

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.

It's the same as av_vsrc_buffer_add_frame(), except it doesn't take pts
or pixel_aspect parameters. Those are read from AVFrame.

Deprecate av_vsrc_buffer_add_frame().

There is no real reason for it to be 64bit, it's just a plain int in the
rest of Libav.

A nontrivial public function such as this should most certainly NOT be
inline.

The option is related to the timecode, the new name clearly specifies the
context. Also it allows to list the option close to the other timecode
options.

The filter is useless.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Also deprecate the use of numerical values.

This new mode is useful for generating frames for interlaced video
displays. Typically interlaced video displays have no form of field
synchronisation. This new mode guarantees correct field order without
any requirement for field synchronisation.

Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

Add "prog" parameter value, and deprecate numeric values.

Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

The native libavfilter hflip filter does the same thing.

Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

This is required for letting applications to create and destroy
AVFilterInOut structs in a convenient way.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

It was ported to a native libavfilter filter.

Partially based on the port by Niel van der Westhuizen
<nielkie@gmail.com>, done for GCI 2010. Same output as the original
filter and as fast.

See thread:
Subject: [FFmpeg-devel] [PATCH] Port MPlayer 2xSaI filter to libavfilter
Date: Thu, 25 Nov 2010 01:31:24 +1000

The header is part of the public API, in particular is used by
doc/examples/filtering_audio.c.

removelogo has been ported to libavfilter, and the wrapper was not
working.

The code is based on the remove-logo filter in MPlayer/libmpcodecs, by
Robert Edele, relicensed to LGPL with consent of the author.

Address trac issue #249.

It will be used for logging, possibly also AVOptions.

Allow to specify the display aspect ratio adopted for rendering
subtitles.

Signed-off-by: William Yu <genwillyu@gmail.com>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

Also add bbox.h and bbox.c files, based on the remove-logo filter by
Robert Edele. These files are useful for sharing code with the pending
removelogo port.

The filter has been ported to a native libavfilter filter.

Address trac ticket #901.

Also add debug logging messages for helping tracking down similar
issues.

Fix trac ticket #467.

This commit also drops the planar parameter; you now need to use the 'p'
suffix in order to request a planar sample format.

The code in the file is written by vitor in be19d752 (2008)
thus cannot have originated in libav which did not exist at that
time

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