Fixes null pointer dereference
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This makes the code about 1.5x faster without any noticeable difference
in the output.

This has no impact on overall performance, since the block DCT taking
most of the time anyway.

Add a tlength option with frequency and timeclamp variable

Add to the volume option support for frequency and timeclamp variable,
   a_weighting, b_weighting and c_weighting functions
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The AALP atom is necessary to properly decode the alpha channel.
Needed for ticket #3707
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

It's a public function and should use the avio_ namespace
Signed-off-by: James Almer <jamrial@gmail.com>
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>

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

Found-by: Carl Eugen Hoyos <ce@hoyos.ws>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit '5b220e1e':
  mpegts: Fix memory leaks and related crashes in mpegs_write_header()

Conflicts:
	libavformat/mpegtsenc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'f8ab9f2f':
  mpegts: Avoid unnecessary variable shadowing
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '6d6bd3a3':
  mpegts: Drop some unnecessary parentheses
Merged-by: Michael Niedermayer <michaelni@gmx.at>

8x8 is about 5x faster than 16x16 on 1080p input. Since a block size of
8x8 makes the filter almost usable (time wise) and it's not obvious if
8x8 or 16x16 is better from a quality PoV (it really depends on the
input and parameters), the filter now defaults to 8x8, and as a result
libavfilter is micro bumped.

* commit 'b7b1bf91':
  mpegts: K&R formatting cosmetics

Conflicts:
	libavformat/mpegtsenc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

The commit bb789016
un-deprecated sws_getContext()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'bb789016':
  swscale: Undeprecate sws_getContext()

Conflicts:
	libswscale/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'ad1ee5fa':
  avcodec: Undeprecate reordered_opaque

Conflicts:
	doc/APIchanges
	libavcodec/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'a7e541c9':
  h264: fix interpretation of interleved stereo modes
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

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

This removes the avcodec dependency and make the code almost twice as
fast. More to come.

The DCT factorization is based on "Fast and numerically stable
algorithms for discrete cosine transforms" from Gerlind Plonkaa &
Manfred Tasche (DOI: 10.1016/j.laa.2004.07.015).

Fixes a clang warning
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* cehoyos/master:
  Do not automatically map subtitles if the decoder and encoder properties are different.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes ticket #3819.

ff_codec_get_id() is a lavf internal function
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

sws_getCachedContext is not a full replacement for the function.

It allows attaching other external, opaque data to the frame and passing it
through the reordering process, for cases when the caller wants other data
than just the plain packet pts.  There is no way to cleanly achieve this
without the field.