This ensures that there are no stale pointers
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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>

* qatar/master:
  avpacket: Fix error checking in packet_alloc

Conflicts:
	libavcodec/avpacket.c

See: b905a713Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '6fc8226e':
  vp3: Check the framerate for validity

Conflicts:
	libavcodec/vp3.c

See: a56d963fMerged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'ac9d1590':
  proresdec: Properly make sure an index doesn't run past the limit

Conflicts:
	libavcodec/proresdec_lgpl.c

See: 30df9789Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'e90a6846':
  cavsdec: Make sure a sequence header has been decoded before decoding pictures

See: ec0965beMerged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '5bbfe193':
  vocdec: Don't update codec parameters mid-stream
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '0ef1660a':
  sierravmd: Do sanity checking of frame sizes

Conflicts:
	libavformat/sierravmd.c

See: 47c4713aMerged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '342c43d1':
  omadec: Properly check lengths before incrementing the position

See: f1d6f013Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'a06a5b78':
  mathops/x86: work around inline asm miscompilation with GCC 4.8.1

See: 659df32aMerged-by: Michael Niedermayer <michaelni@gmx.at>

Previously the wrong buffer pointer was checked, when buf
instead of *buf was checked. But checking the return value
instead is even better.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>

If idx equaled num_coeffs - 1 on entry to the loop, the previous
check failed to break out of the loop.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>

If we really want to support parameter changes, they need to be
signalled along with the AVPackets as parameter change side data,
not just changing the AVCodecContext parameters when a packet
is demuxed (since there may be other earlier packets yet undecoded).

Something similar was already done for the sample rate in 0883109b,
but some parameters were left changeable.

This avoids having to recheck the channel count for validity for
each decoded frame in (ad)pcm decoders, unless the decoders
explicitly say that they accept parameter changes.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>

Limit the size to INT_MAX/2 (for simplicity) to be sure that
size + BYTES_PER_FRAME_RECORD won't overflow.

Also factorize other existing error return paths.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>

works on bellair_digital_movie.asf

Fixes Ticket2965
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes part of Ticket2965
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Fixes Ticket894
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Alexander Strasser <eclipse7@gmx.net>

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

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

Fixes Ticket2934
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The volatile is not required here, and prevents a miscompilation with GCC
4.8.1 when building on x86 with --cpu=i686
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Fixes out of array accesses
Fixes Ticket2922

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

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

This fixes the hypothetical case of rounding errors causing
incorrect values to be used.
We do not use *_EPSILON, because non trivial expressions can contain
errors larger than that making a zero equality test with *_EPSILON
unreliable.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

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

* qatar/master:
  mem: Document the non-compatibility of av_realloc() and av_malloc()
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

Thanks-to: Kostya Shishkov <kostya.shishkov@gmail.com>
Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>