Several compilers such as clang/icc/pathscale will optimize the check
pos + size < pos (assuming size > 0) into false, since signed integer
overflow is undefined behavior in C.  This breaks overflow checking.
Use a safe precondition check instead.
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes CID968583
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes CID968587
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Fixed CID968588
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes Ticket868
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Conflicts:

	Changelog

This also fixes a warning about uninitialized variables
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The uninitialized use implicates 0 channels, which is unlikely
to reach this function but fixed anyway in this commit.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Without any correctly decoded slices, there can be no frame.

Fixes out of array reads

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

* qatar/master:
  Remove put_no_rnd_pixels_l2 function pointer for w=16 from dsputil.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'fef906c7':
  Move vorbis_inverse_coupling from dsputil to vorbisdspcontext.

Conflicts:
	libavcodec/dsputil.c
	libavcodec/x86/dsputil_mmx.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'aeaf268e':
  vp3: integrate clear_blocks with idct of previous block.
  mpegvideo: fix loop condition in draw_line()
  dvdsubdec: parse the size from the extradata

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

The function is never used.

Conveniently (together with Justin's earlier patches), this makes
our vorbis decoder entirely independent of dsputil.

This is identical to what e.g. vp8 does, and prevents the function call
overhead (plus dependency on dsputil for this particular function).

Arm asm updated by Janne Grunau <janne-libav@jannau.net>.
Signed-off-by: Janne Grunau <janne-libav@jannau.net>

Makes ff_id3v2_read reset stream position at the end of ID3 data if the
header size is not matched (caused by an EOF for example).

Current behaviour (without the patch):
    filesize = 400
    id3 data size = 399
    file offset after ff_id3v2_read is 400 instead of 399
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Fixes null pointer dereference
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

The used flag was mistakenly overlapping with chroma drop
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The loop condition `x = ex' is incorrect.  It should be `x <= ex'.

This bug was introduced in commit c65dfac4 "mpegvideo.c: K&R formatting
and cosmetics."

CC:libav-stable@libav.org
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Allow to force a key frame at the beginning of each chapter.

Signed-off-by: Alexandra Khirnova <alexandra.khirnova@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Fixes Ticket2127
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Barcelona/amdfam10 does not support SSE4 instructions.
Also, Bulldozer supports AVX instructions, so use them instead.
Signed-off-by: James Almer <jamrial@gmail.com>
Reviewed-by: Carl Eugen Hoyos <cehoyos@ag.or.at>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  x86: dsputil: Drop some unused macro definitions
  x86: Add a Yasm-based emms() replacement
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'd633d12b':
  x86inc: Add cvisible macro for C functions with public prefix
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'ef5d41a5':
  x86inc: Rename "program_name" to "private_prefix"
  configure: Run SHFLAGS through ldflags_filter()

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

Fixes assertion failure

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

* cus/stable:
  ffplay: flush video filters on seek
  ffplay: use videoq.serial to detect obsolete frames
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Correct the time interval between logged data rows to the expected
value of 100 milliseconds by naming a new loop counter variable
to be distinct from loop counters for inner loops that
inadvertently change the outer loop operation.

This suggested patch is 1 of 3 for Ticket #2144 "libavfilter ebur128
loudness inaccuracy, irregular time interval, LFE interference".
This suggested patch supersedes the contribution of January 15, 2013
in the thread “[PATCH] lavfi: EBU R.128 irreg time, ch weights, skip
LFE” which combined multiple fixes in one patch.
Reviewed-by: Clément Bœsch <ubitux@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

the output looks better with a random initial state than
all 0
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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