loco: check that there is data left after decoding a plane.

CC:libav-stable@libav.org
(cherry picked from commit 067432c1c95882c7221e694f33d9f3bdbe46de7f)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
mov: use the format context for logging.

CC:libav-stable@libav.org
(cherry picked from commit 56daf10e0313c5e36f43e773f457d2a99ff0df10)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
lagarith: avoid infinite loop in lag_rac_refill()

range == 0 happens with corrupted files

CC:libav-stable@libav.org
(cherry picked from commit de6dfa2bb82df916a67e5036b0ef96a944781ed3)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
flicvideo: avoid an infinite loop in byte run compression

When byte_run is 0, pixel_countdown is not touched and the loop will run
forever.

CC:libav-stable@libav.org
(cherry picked from commit ddfe1246d98f70cdce368a2176196ba26ed7bf2d)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
av_memcpy_backptr: avoid an infinite loop for back = 0

CC:libav-stable@libav.org
(cherry picked from commit f935aca44c674d30e3ed940ef73bbad1228a5855)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
mlpdec: do not try to allocate a zero-sized output buffer.

CC:libav-stable@libav.org
(cherry picked from commit 0dff40bfb9a0b24d56ecd64cd90c8f724cc5745f)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
qtrle: add more checks against pixel_ptr being negative.

CC:libav-stable@libav.org
(cherry picked from commit e10659244782b26061e7d52c06437de32a43a7af)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
4xm: check the return value of read_huffman_tables().

CC:libav-stable@libav.org
(cherry picked from commit 8097fc9a2dd49d8e467b16c8bafaa96242b7fe46)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
cavs: initialize various context tables to 0

Avoids crashes with corrupted files.

CC:libav-stable@libav.org
(cherry picked from commit 4f3b058c84f570e261d743c7c22f865617fd28ac)

Conflicts:

	libavcodec/cavs.c

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
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