* commit 'e2ad0b66':
  imgutils: create misc functions for dealing with buffers

Conflicts:
	doc/APIchanges
	libavcodec/avcodec.h
	libavcodec/avpicture.c
	libavutil/imgutils.c
	libavutil/imgutils.h
	libavutil/version.h

See: e6674e46Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

The original code was intended purely for rotation == 0
In cf70ba37 the condition was
changed to use it only for rotation != 0
which broke the cases for which it was intended to be used
as well as breaking cases for which it was not intended to be
used.
This changes the code so it could work for the more general
case and fixes the regressions
If you have sample files that are not handled correctly
please open tickets or mail me!
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'cf70ba37':
  mov: Check angle rather than full matrix when updating SAR
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '1e763454':
  png: improve signature check

Conflicts:
	libavcodec/pngdec.c

See: 8a08503b
See: 0a3589bfMerged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '456ffec3':
  img2dec: correctly use the parsed value from -start_number

No change, start_number works fine without this change
and does not work with it
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

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

Move the lavc/imgconvert functions and rename them as follows:
  avpicture_get_size -> av_image_get_buffer_size()
  avpicture_fill     -> av_image_fill_arrays()
  avpicture_layout   -> av_image_copy_to_buffer()

The new functions have an align parameter, which allows to define the
linesize alignment assumed in the buffer (which is set or read).

The names of the functions are consistent with the lavu/samples API
(av_samples_get_buffer_size(), av_samples_fill_arrays()).

A redundant check has been dropped from av_image_fill_arrays().
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

When the display matrix is not the identity one, but the rotation angle
is zero, there is no need to update the sample aspect ratio.

Otherwise, it is possible to obtain negative values which interferes
with transcoding in later stages. This kind of behaviour is reproducible
on mov files with "major_brand: MSNV".

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

Return proper error code, print an error message and add missing
parentheses.

Previously the image sequence was always starting from the minimum
number rather than the requested one.

CC: libav-stable@libav.org

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

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

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

This fixes missdetecting such streams as something else like AAC
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

Fixes CID1260704
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

If refdata was NULL, the memcpy() ended up copying the same memory
block onto itself, which is not only pointless, but also undefined
behavior.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

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

The filter was ported to a native libavfilter filter in
a299cd5a.
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

Previous version reviewed-by: tim nicholson
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

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

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

MXF files generated by Media Composer or LibMXF can contain a
project name property in the Preface. Lots of existing samples have them.

http://samples.ffmpeg.org/MXF/issue2160/PW0805A0V01.4C5B5636.EFA330.mxf
project_name    : DNX145 PW Test

http://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket3450/WriteAvidMXFgenerated/5502_0010_v1.mxf
project_name    : Rombus

http://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket3100/1sec_mxf_test_Video5270C795.mxf
project_name    : NVB_DOOD
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

int32/float only
Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: Lou Logan <lou@lrcd.com>

It's not an installed header.
Tested-by: Thilo Borgmann <thilo.borgmann@mail.de>
Tested-by: Wei Gao <highgod0401@gmail.com>
Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Almer <jamrial@gmail.com>

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

Found-by: ubitux
(rest of found stuff left to the author to decide which way to fix)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes Ticket968
partly fixes Ticket691
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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