Fixes ticket #2533.

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

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

This avoids duplicating the default command line arguments
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Demuxers where the changed code looked less readable where skiped
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

* qatar/master:
  configure: Check for getenv
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '2b677ffc':
  swscale: Add av_cold attributes to init functions missing them

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

* commit '1fda184a':
  avutil: Add av_cold attributes to init functions missing them
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '20c86571':
  lavfi: let gcc realign the stack on public graph driving functions

Conflicts:
	libavfilter/buffersink.c
	libavfilter/buffersrc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'c0c2b96c':
  sctp: Add a note on why sctp_recvmsg and sctp_sendmsg have ff_-prefixes
  avs: Increase magic value score above file extension score

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

* commit 'e0f8be64':
  avformat: Add AVPROBE_SCORE_EXTENSION define and use where appropriate

Conflicts:
	libavformat/ac3dec.c
	libavformat/avformat.h
	libavformat/avs.c
	libavformat/m4vdec.c
	libavformat/mov.c
	libavformat/mp3dec.c
	libavformat/mpeg.c
	libavformat/mpegvideodec.c
	libavformat/psxstr.c
	libavformat/pva.c
	libavformat/utils.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '4d7ed3e7':
  build: output-example: Add avutil to ELIBS in link command

Conflicts:
	libavformat/Makefile

No change as our example build code doesnt have this bug
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'e445647b':
  avresample: Add av_cold attributes to init functions missing them
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '093804a9':
  avfilter: Add av_cold attributes to init/uninit functions

Conflicts:
	libavfilter/af_ashowinfo.c
	libavfilter/af_volume.c
	libavfilter/src_movie.c
	libavfilter/vf_lut.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '6fee1b90':
  avcodec: Add av_cold attributes to init functions missing them

Conflicts:
	libavcodec/aacpsy.c
	libavcodec/atrac3.c
	libavcodec/dvdsubdec.c
	libavcodec/ffv1.c
	libavcodec/ffv1enc.c
	libavcodec/h261enc.c
	libavcodec/h264_parser.c
	libavcodec/h264dsp.c
	libavcodec/h264pred.c
	libavcodec/libschroedingerenc.c
	libavcodec/libxvid_rc.c
	libavcodec/mpeg12.c
	libavcodec/mpeg12enc.c
	libavcodec/proresdsp.c
	libavcodec/rangecoder.c
	libavcodec/videodsp.c
	libavcodec/x86/proresdsp_init.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '72e228b2':
  nut: K&R formatting cosmetics

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

They now match the --valgrind arguments
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'b1ee8eec':
  configure: Add basic valgrind-memcheck support

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

* commit '95e8ac60':
  build: normalize coverage.info

Conflicts:
	tests/Makefile
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '768e44d0':
  build: tune down the output of lcov/gcov

Conflicts:
	tests/Makefile
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This this fixes one of the issues with
http://blogs.bu.edu/mhirsch/files/2012/08/Rotate180CCW-checkerboard.mj2_.zip
and at least allows to demux the file properly instead
of failing during probing.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Should only be printed if a "JPEG" format was used,
not for e.g. XYZ.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Fixes a case where multichannel bitrate isn't accurately
targetted by psy model alone, never achieving the target bitrate.
Now fixed.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Fixes out of array accesses
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes out of array access
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

When targeting the "windows store application" (metro) API subset
(or the windows phone API subset), the getenv function isn't
available. If it is unavailable, just define getenv to NULL.

The check uses check_func_headers, since the function actually
might exist in the libraries, but is hidden in the headers.

The fallback is in config.h since msvc can't do -D defines with
parameters on the command line, and it's used both within the
libraries and the frontend applications (so a libavutil internal
header wouldn't be enough).
Signed-off-by: Martin Storsjö <martin@martin.st>

The functions which actually drive the filter graph by pushing
frames through it need to ensure an aligned stack for SIMD functions.

This fixes a crash in YADIF filter when using a mingw build in a MSVC
application.
Signed-off-by: Martin Storsjö <martin@martin.st>

This should fix misdetection of AVS files as AviSynth scripts
when AviSynth support is enabled (Bugzilla #357).

output-example links against swscale, which depends on avutil.  In standard
configurations, by pure good luck, the libs before swscale pull in all of
swscale's dependencies and linking succeeds.  However, in some configurations
like --disable-asm this is not the case and linking fails.

Hardcode the dependency to avoid a more general Makefile refactoring.