Use the existing filter functions instead of open-coding the
separation of general flags and libraries.

Signed-off-by: Mans Rullgard <mans@mansr.com>

awk alone can do this, no need for grep.

Signed-off-by: Mans Rullgard <mans@mansr.com>

Fixes null pointer dereference. Fixes CID732242.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Fixes integer overflow. Fixes CID732223.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Fixes CID703626.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

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

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

Signed-off-by: Paul B Mahol <onemda@gmail.com>

* qatar/master:
  swscale: try to use mmap only if available
  configure: check for mprotect
  wmapro: use planar sample format
  wmalossless: output in planar sample format
  wmadec: use float planar sample format output
  shorten: use planar sample format
  lavc: update documentation for AVFrame.extended_data

Conflicts:
	libavcodec/shorten.c

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

Signed-off-by: Paul B Mahol <onemda@gmail.com>

This fixes playback in some circumstances (like webm in firefox).
Regression after 2c34367b.

It is also matching the Matroska specifications:
http://matroska.org/technical/specs/notes.html, "The quick eye will
notice that if a Cluster's Timecode is set to zero, it is possible to
have Blocks with a negative Raw Timecode. Blocks with a negative Raw
Timecode are not valid."

Based on libcompface code by James Ashton <James.Ashton@anu.edu.au>, and
relicensed to LGPL with the author's consent.

Some systems, e.g. Minix, have sys/mman.h defining MAP_ANONYMOUS without
providing (working) mmap and friends.  The mmx filter generation code
checks only for MAP_ANONYMOUS, not for availability of mmap itself which
leads to build errors on aforementioned systems.

This changes the conditional compilation to use mmap only if all the
required functions are available.

Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Mans Rullgard <mans@mansr.com>

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

Fixes CID703723
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes a problem described in Ticket1065

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

0/0 fails to be parsed

Fixes Ticket1814
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes CID717554
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This fixes a potential crash.

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

Fixes CID717843
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Fixes CID733737
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

see trac 1345
https://ffmpeg.org/trac/ffmpeg/ticket/1345

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

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

Fixes Ticket1065
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

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

* qatar/master:
  avutil: Do not make ff_ symbols globally visible.
  avutil: Rename ff_set_systematic_pal2() ---> avpriv_set_systematic_pal2()
  build: tms470: work around glibc math.h problems
  configure: improve tms470 compiler usage with glibc

Conflicts:
	libavcodec/bmpenc.c
	libavcodec/rawdec.c

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

Signed-off-by: Paul B Mahol <onemda@gmail.com>

* commit 'b5198a2637b7b45b0049a1d4b386a06f016f2520':
  configure: tms470: add mapping for -mfpu=vfpv3-d16 flag
  configure: recognise Minix as OS
  configure: work around bug in ash shell
  eval-test: make table static const
  lavr: handle clipping in the float to s32 conversion
  nut: support pcm codecs not mapped in avi

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

* commit '1bd442c276e6688b43777a198cad0d7e3a92123f':
  nut: prioritize native tags

Conflicts:
	tests/ref/lavfi/crop
	tests/ref/lavfi/crop_scale
	tests/ref/lavfi/crop_scale_vflip
	tests/ref/lavfi/crop_vflip
	tests/ref/lavfi/null
	tests/ref/lavfi/pixdesc
	tests/ref/lavfi/pixfmts_copy
	tests/ref/lavfi/pixfmts_crop
	tests/ref/lavfi/pixfmts_hflip
	tests/ref/lavfi/pixfmts_null
	tests/ref/lavfi/pixfmts_pad
	tests/ref/lavfi/pixfmts_scale
	tests/ref/lavfi/pixfmts_vflip
	tests/ref/lavfi/scale200
	tests/ref/lavfi/scale500
	tests/ref/lavfi/vflip
	tests/ref/lavfi/vflip_crop
	tests/ref/lavfi/vflip_vflip

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

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

If total number of samples is -1 it means stream is of unknown length.

Fixes ticket #1777.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>