h264: check for luma and chroma bit dept being equal

The decoder assumes a single bit depth for all the planes
while the specification allows different bit depths for luma
and chroma.

Avoid the possible problems described in CVE-2013-2277

CC: libav-stable@libav.org
vorbisdec: check memory allocations
shorten: set invalid channels count to 0

Prevent the loop shorten_decode_close from writing and freeing out of
the array boundary.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
shorten: use the unsigned type where needed

get_uint returns an unsigned value, use an unsigned to store
blocksize to make sure the comparison logic is correct and report
correctly the error for the channel count not supported.
shorten: K&R formatting cosmetics
shorten: report meaningful errors
snowenc: initialize edges

This fixes a regression caused by changes to the buffer initialization code.
Fixes valgrind warnings

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/internal: Fix #if DECODE_AUDIO / ENCODE_AUDIO name mismatch
lavf/concat: document the use of the files durations.

Address trac ticket #2319.
snowenc: add forgotten emms_c()

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

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Move ff_cropTbl and ff_zigzag_direct from dsputil to mathtables.

These are widely used throughout libavcodec, nothing dsputil-specific.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
lavc: Split out ff_hwaccel_pixfmt_list_420[] over individual codecs

Not all hwaccels implement all codecs, so using one single list for
multiple such codecs means some codecs will be represented in the list,
even though they don't actually handle that codec. Copying specific
lists in each codec fixes that.

Signed-off-by: Martin Storsjö <martin@martin.st>
cavs: Add a dependency on h264chroma

This fixes standalone building of this decoder.

Signed-off-by: Martin Storsjö <martin@martin.st>
avconv: Make sure the encoder exists before inspecting supported_list

This fixes crashes when there is no encoder for the default codec of
selected format.

Signed-off-by: Martin Storsjö <martin@martin.st>
normalize calls to ff_alloc_packet2

- check ret < 0
- remove excessive error log

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'c10da30d8426a1f681d99a780b6e311f7fb4e5c5'

* commit 'c10da30d8426a1f681d99a780b6e311f7fb4e5c5':
  shorten: set invalid channels count to 0
  vorbisdec: check memory allocations
  h264: check for luma and chroma bit dept being equal

Conflicts:
	libavcodec/shorten.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'a2ad554def214d2d03b7c16f68dc081a8622f9ca'

* commit 'a2ad554def214d2d03b7c16f68dc081a8622f9ca':
  shorten: K&R formatting cosmetics

Conflicts:
	libavcodec/shorten.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '4c364eb2b856fc33cf7b42f7c7b979e69fde5f3a'

* commit '4c364eb2b856fc33cf7b42f7c7b979e69fde5f3a':
  shorten: report meaningful errors

Conflicts:
	libavcodec/shorten.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '5a4e9fe855282a99586050a507d0a486ad39df5b'

* commit '5a4e9fe855282a99586050a507d0a486ad39df5b':
  avcodec/internal: Fix #if DECODE_AUDIO / ENCODE_AUDIO name mismatch
  shorten: use the unsigned type where needed

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