The original code left-shifts negative values, which is undefined
in the C99 specification (the one used during normal FFmpeg compilation).
This change multiplies by (1 << shift), which is functionally equivalent,
but has defined behavior.
With this change, fate-idct8x8 compiled with --fsanitize=undefined works.

Bug-Id: 686
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The assembly generated by gcc is unchanged by this commit

* commit 'c23c96b6':
  lavf: add av_stream_get_side_data

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

* commit 'afe17626':
  build: export library dependencies in ${name}_FFLIBS

Conflicts:
	common.mak
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '132a5711':
  check: add libavcodec/vda_internal.h to SKIPHEADERS-$(CONFIG_VDA)

See: beeb7551Merged-by: Michael Niedermayer <michaelni@gmx.at>

Fixes muxing to end up with a encoder=Lavf... and encoder_eng=somethingelse
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>

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

Removes an ugly $(if) to avoid conflicts with $(FFLIBS-) in the
top-level MAkefile.

* lukaszmluki/master:
  lavf/ftp: favour EPSV over PASV command
  lavf/audiointerleave: return more meaningful error codes
  lavf/audiointerleave: check for allocation failure
  lavf/audiointerleave: use av_fifo_alloc_array
  lavf/dvenc: use av_fifo_alloc_array
  lavc/flac_parser: use av_fifo_alloc_array
  lavc/frame_thread_encoder: use av_fifo_alloc_array
  lavfi/vf_fps: use av_fifo_alloc_array
  lavfi/buffersink: use av_fifo_alloc_array
  ffmpeg: use av_fifo_alloc_array
  lavd/jack_audio: use av_fifo_alloc_array
  lavu/fifo: add av_fifo_alloc_array function
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Reviewed-by: Anshul <anshul.ffmpeg@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

EPSV is newer version of PASV and allows to use IPv6.
Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

Allows to alloc fifo buffer by passing
number of elements and size of element.
Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

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: James Almer <jamrial@gmail.com>
Reviewed-by: "Ronald S. Bultje" <rsbultje@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>

* commit '82fc9f4b':
  display: Include mathematics.h for fallback definition of NAN
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '853cc025':
  mov: store display matrix in a stream side data

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

* commit 'bddd8cbf':
  Add transformation matrix API.

Conflicts:
	libavcodec/avcodec.h
	libavcodec/utils.c
	libavutil/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '9929b356':
  pthread_frame: simplify the code by using new AVPacket API

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

* commit 'cdf58f05':
  avpacket: fix copying side data in av_packet_copy_props()
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'a312f710':
  lavf: deprecate now unused AVStream.pts

Conflicts:
	libavformat/mux.c
	libavformat/version.h

mostly not merged as the code is needed for a/vsync drop handling
and what the code does is what is needed, it could maybe be moved
elsewhere or factored somehow but simply removing it would be droping
these features.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'ed7922fa':
  mux: drop one of the hacks comprising compute_pkt_fields2()

Conflicts:
	libavformat/mux.c

Not merged as -async drop / -vsync drop depends on this code
Merged-by: Michael Niedermayer <michaelni@gmx.at>

this prevents the creation of a packet even though no single sample has ever
been input, which some confusion in the timestamp generation
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

this prevents the creation of a packet even though no single sample has ever
been input, which some confusion in the timestamp generation
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>