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

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

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

Ported asettb (including the sr option for audio sample rate) from FFmpeg,
and copied/modified the existing settb documentation for asettb.
Signed-off-by: NKaterina Barone-Adesi <katerinab+libav@gmail.com>
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

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

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

Building libavfilter without that functionality makes little sense.

Based on the volume filter in FFmpeg written by Stefano Sabatini
<stefasab@gmail.com>.

The following commit will make it useless.

The crop_scale_vflip FATE test changes because of off-by-one differences
in output when vflipped slices are passed to sws.

It can be useful for debugging.

Based on a patch by Stefano Sabatini <stefano.sabatini-lala@poste.it>

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

Inspired by MPlayer's af_channels filter and SoX's remix effect.

It joins multiple input streams into one multi-channel output.

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

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

Based on a patch by Mina Nagy Zaki <mnzaki@gmail.com>

Also add the public interface libavfilter/buffersink.h.

Based on a commit by Stefano Sabatini.

The scale filter is used for internal colorspace conversions, so it must
always be present.

It's a part of public API.

The licence was changed from GPL to LGPL with explicit approval from
the original author.

See thread:
Subject: [FFmpeg-devel] [PATCH] lavfi: add rgbtestsrc source,
        ported from MPlayer libmpcodecs
Date: Mon, 11 Jul 2011 16:32:41 +0200
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

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