Fixes part of Ticket 2004
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Ideally the compiler could figure this out on its own,
but it seems it can't.
An alternative that would avoid the messy explicit memcpy
would be to use a sub-struct for the parts that should
be preserved, which can then simply be assigned.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

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

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

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

Reviewed-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Found-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

As far as I can tell the value can never go outside
the int16_t type.
And especially the cost of the initialization is
reduced quite a bit by making it smaller.
Overall decoding speedup not measurable though.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

11674 -> 10877 decicycles on my Phenom II.
Overall speedup was unfortunately within measurement error.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

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

Signed-off-by: James Almer <jamrial@gmail.com>
Reviewed-by: Benoit Fouet <benoit.fouet@free.fr>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Changes since v1:
* renamed mxf_read_source_package -> mxf_read_package

v1 reviewed-by: Tomas Härdin <tomas.hardin@codemill.se>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

* commit 'cd975d56':
  hevc: Spin the mv_mpv_mode calls in a stand alone function

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

* commit '1f80742f':
  qdm2: avoid integer overflow

See: ccfd8cffMerged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '312daa15':
  vp9: Use the correct upper bound for seg_id

Conflicts:
	libavcodec/vp9.h
	libavcodec/vp9block.c

Not merged, the value was correct before as far as i can see
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit 'd466d82f':
  dvdsubdec: Do not leak on failure path

Conflicts:
	libavcodec/dvdsubdec.c

See: 7fa9f7efMerged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'a42d5c86':
  libtwolame: prevent a NULL pointer dereference

See: a586b3d9Merged-by: Michael Niedermayer <michaelni@gmx.at>

This avoids null pointer dereferences in case memory allocation has failed
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Also only free it when it was not previously allocated to return to the
state prior to the failing function call
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit '863ee8a8':
  lavfi: clean memory on error in ADD_FORMAT()
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'fd9badd3':
  xwma: Do not leak on failure path

Conflicts:
	libavformat/xwma.c

See: 375a0c03Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'aa8b39d9':
  lavc: Move the libtwolame encoder registration to the list for external libraries

Conflicts:
	libavcodec/allcodecs.c

See: f5f98727Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

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

Fixes Ticket1873
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

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

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

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

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

Fixes Ticket4012
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

CC: libav-stable@libav.org
Bug-Id: CID 700555

And use a macro to make apparent why the value.

Bug-Id: CID 1108595

CC: libav-stable@libav.org
Bug-Id: CID 1198262