Consistently use "cpu_flags" as variable/parameter name for CPU flags
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  Consistently use "cpu_flags" as variable/parameter name for CPU flags

Conflicts:
	libavcodec/x86/dsputil_init.c
	libavcodec/x86/h264dsp_init.c
	libavcodec/x86/hpeldsp_init.c
	libavcodec/x86/motion_est.c
	libavcodec/x86/mpegvideo.c
	libavcodec/x86/proresdsp_init.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
lavf/riff: Add ITRK tag

Some players, like foobar2000 or modern versions of WMP, create WAV
files using the ITRK tag for track instead of IPRT

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
vorbiscomment: Add DESCRIPTION to ff_vorbiscomment_metadata_conv

It's the official (or recommended) name for comment/description entries.
See https://www.xiph.org/vorbis/doc/v-comment.html

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
lavfi/scale: allocate interlaced scalers only if needed.

Fix "Value 0.000000 for parameter 'srch' out of range"
error message when source or destination height is 1.

Note: since the av_opt_set_int() calls are not checked for
failure and the interlaced scalers are not actually used,
this error has no consequence apart from a frightening message
in the log.
lut3d: Fix reading 3dl files with leading comments.

Fixes ticket #2787.
lavf/concat: Never fail for sample aspect ratio 0:1.

Fixes ticket #2456.

Reviewed-by: Nicolas George
Fix pix_fmt detection in the native jpeg2000 decoder.

Based on b7a928b by Michael Bradshaw.
Fixes ticket #2683.

Reviewed-by: Nicolas Bertrand
avserver: Remove unused loadable module support

There is no record of this ever being used at all, anywhere,
since the feature was added in 2effd274466.

This gets rid of extra linker tricks just to support a feature
that isn't used, simplifying portability to other platforms.

Signed-off-by: Martin Storsjö <martin@martin.st>
avformat/rt*p: Joining a SSM multicast group using an SDP (Issue #2171)

Passes Source-Specific Multicast parameters read from an sdp file through to the UDP socket code,
allowing source-specific multicast streams to be correctly received. As an integral part of this
change, additional checking (currently only enabled in the case of SSM streams, but probably
useful in similar scenarios) has been added to the RTP protocol handler to distinguish UDP packets
arriving from multiple sources to the same port and process only the expected packets
(those transmitted from the expected UDP source address). This resolves an issue identified
when multiple instances of FFmpeg subscribe to different Source-Specific Multicast streams
but with each sharing the same destination port.

Signed-off-by: Edward Torbett <ed.torbett@simulation-systems.co.uk>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Merge remote-tracking branch 'cehoyos/master'

* cehoyos/master:
  Fix pix_fmt detection in the native jpeg2000 decoder.
  lavf/concat: Never fail for sample aspect ratio 0:1.
  lut3d: Fix reading 3dl files with leading comments.

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Employ consistent LIBAV_COMPAT_ multiple inclusion guards in compat/

Also fix a comment and an #endif comment.
compat: Add missing license boilerplates
jpeg2000dec: parse CDEF

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

Conflicts:

	libavcodec/jpeg2000dec.c

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
jpeg2000dec: Support non subsampled 8bit planar pixel formats

Fixes file2.jp2

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
img2enc: add option to use strftime() for filename

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'd010e95f86089abe9a3d4d4a66ac8102312d28a4'

* commit 'd010e95f86089abe9a3d4d4a66ac8102312d28a4':
  avserver: Remove unused loadable module support

Conflicts:
	configure
	ffserver.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '439902e0d68a0f0d800c21b5e6b598d5fa0c51da'

* commit '439902e0d68a0f0d800c21b5e6b598d5fa0c51da':
  Employ consistent LIBAV_COMPAT_ multiple inclusion guards in compat/

Conflicts:
	compat/aix/math.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
rtpproto: Support IGMPv3 source specific multicast inclusion

Blocking/exclusion is not supported yet.

The rtp protocol parameter takes the same form as the existing
sources parameter for the udp protocol.

Signed-off-by: Martin Storsjö <martin@martin.st>
rtpproto: Check the source IP if one single source has been specified

If another peer is sending unicast packets to the same port that
we are listening on, those packets can end up being received despite
using source specific multicast. For those cases, manually check the
source address of received packets against the intended source address.

This only handles the case when the source list is one single IP
address for now, which probably is the most common case.

Based on a patch by Ed Torbett.

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