arc4random() was designed as a superior interface for system random
number generation, designed for OpenBSD and subsequently incorporated by
other BSD's, Mac OS X, and some non-standard libc's. It is thus an improvement to
use it whenever available.

As a side note, this may or may not get included in glibc, and there is
a proposal to create a posix_random family based on these ideas:
http://austingroupbugs.net/view.php?id=859.

Tested on Mac OS X.
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>

* commit 'f1ccd076':
  h264: do not call frame_start() for missing frames

Not merged, FFmpeg does a lot more in frame_start to setup missing frames
as well (like coloring them), and the overhead of the other setup is
minimal.
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit 'd6dc5d15':
  aacdec: fix aac_static_table_init() prototype
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '68e547ae':
  avpacket: use ERANGE instead of EOVERFLOW
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit 'd5f5c90b':
  rtsp: free opts dictionary on failure of getnameinfo
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '8df8f0c7':
  movenc-test: add a missing va_end call
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit 'b8b21dee':
  mxfenc: always assume long gop
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit 'e02de9df':
  lavc: export Dirac parsing API used by the ogg demuxer as public
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '8bcadaac':
  mpegenc: use the CPB props side data
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '5845a827':
  movenc: use the CPB props side data
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '82590024':
  qsvenc: export CPB props side data
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '1520c6ff':
  nvenc: export CPB props side data
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '2507b5dd':
  mpegvideo_enc: export vbv_delay in side data
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '3f5c99fc':
  mpegvideo_enc: export CPB props side data
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '732a37d1':
  libx264: export CPB props side data
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '03afb62e':
  libvpxenc: export CPB props side data
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '11c9bd63':
  libopenh264enc: export CPB props side data
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit 'f0b769c1':
  lavc: add a packet side data type for VBV-like parameters
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit 'e63e3797':
  avconv: pass the global codec side data to the muxer
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '84adab33':
  lavc: add stream-global packet side data
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '31c51f74':
  avpacket: add a function for wrapping existing data as side data
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit 'b09ad37c':
  h264: derive the delay from the level when it's not present

Merged without changing the strict_std_compliance check, as it breaks FATE
and changes decoding behavior.
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '792b9c9d':
  h264: set frame_num in start_frame(), not decode_slice_header()
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '741b494f':
  h264: eliminate default_ref_list
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

This adds a computation of the progress speed versus realtime ("Nx")
to the status line and to the report log. It uses the progress time
as already calculated for total output time as a base.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes assertion failure with ffserver
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Due to this typo max_center can be too large, causing nlsf to be set to
too large values, which in turn can cause nlsf[i - 1] + min_delta[i] to
overflow to a negative value, which is not allowed for nlsf and can
cause an out of bounds read in silk_lsf2lpc.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

This allows to honour formatting options.

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

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>

These postfixes can be computed statically, and there is no need to
waste runtime resources.

Tested with FATE.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>

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