It makes more sense to not claim anything about the SAR if we don't know
anything. No changes in the FATE tests, since this is what avconv ends
up doing anyway.

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

Bug-Id: CID 1339818

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

(cherry picked from ffmpeg commit fdb9399681)
Signed-off-by: Anton Khirnov <anton@khirnov.net>

(cherry picked from ffmpeg commit 353cf95f94)
Signed-off-by: Anton Khirnov <anton@khirnov.net>

(cherry picked from ffmpeg commit a46a23d30f)
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from ffmpeg commit 227b4458fb)
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Useful for dealing with constant frame-rate video.

(cherry picked from ffmpeg commit 722762f7e1)

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

(cherry picked from ffmpeg commit 7cd5fa35fe)

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

(cherry picked from ffmpeg commit 3161958455)
Signed-off-by: Anton Khirnov <anton@khirnov.net>

(cherry picked from ffmpeg commit 0d24931604)

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

(cherry picked from ffmpeg commit 9ca440679d)

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

(cherry picked from ffmpeg commit 7b42036b3b)

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

Calculation of x an y based on width and height did not work when
width == 0 or height == 0.  "0" substitutes the input width and
height, but did so too late for x, y expression evaluation.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

`av_packet_unref` matches the AVFrame ref-counted API and can be used as
a drop in replacement.

Deprecate `av_free_packet`.

This correctly adjust chroma subsampling for column interleaved mode,
and allows future high bitdepth support.

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

It should be possible to pass hwaccel frames through lavfi.

Add timebase and aspect ratio information.

The new fields can be accessed directly and are more intelligible.

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

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

Deprecated in 11/2012.

Deprecated in 06/2012.

Deprecated in 06/2012.

Reported-By: zehan@magicpony.technology

The .text section is already 16-byte aligned by default on all supported
platforms so `SECTION_TEXT` isn't any different from `SECTION .text`.

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

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

There is a fallback for localtime_r and it is in use already.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

The current code expects query_formats() to be called exactly once, it
will leak if it's not called at all (filter initialized, but never
configured or used) or try to read freed memory if it's called more than
once.

Found-by: James Almer <jamrial@gmail.com>
CC: libav-stable@libav.org

This filter currently assumes that the input audio is continuous and
does some timestamps manipulation based on this assumption.

This is unnecessary if we are only converting the channel layout or the
sample format, without resampling. In such a case, just leave the
timestamps as they are.

Otherwise trailing zeroes would appear.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

af_ashowinfo, due to the enum AVAudioServiceType use.

This reverts commit 63be97ec40.

All those calls were unchecked on purpose, as explained in the comments
in the code.

This correction was suggested to me by Michael Niedermayer

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

And document both `draw` and `alpha`.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Bug-Id: CID 1267902
CC: libav-stable@libav.org
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

This applies to every library where performance is not critical.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

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