* commit '3bb46524':
  h261dec: Fix context initialization sequence

See: 6c1ee1a1Merged-by: NMichael Niedermayer <michaelni@gmx.at>

Also adds a lot of infrastructure necessary for it.
Some of it is a bit ugly though.
Increases binary size for hardcoded tables by about 12 kB,
which is about 15 kB from qdm2_table minus data and code
saved that was only used for creating it.
Signed-off-by: NReimar Döffinger <Reimar.Doeffinger@gmx.de>

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

ff_mpv_common_init sets s->context_initialized.

This fixes decoding of h261 in the cases where the demuxer
hasn't already set the frame size.

CC: libav-stable@libav.org
Signed-off-by: NMartin Storsjö <martin@martin.st>

For rgb, with a 1080p source, 69 to 74fps on core i5(2 core, 1.8GHz),
and 136 to 160 fps on an core i7(4770R, 3.2Ghz)
Changed the yuv code for consistency, even though the performance
increase is not as obvious as rgb
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

* commit '91bfac75':
  h261enc: Disallow sliced encoding
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

* commit 'df07c07b':
  rtpdec_h263_rfc2190: Clear the stored bits if discarding buffered data
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

* commit '42181740':
  rtpenc: Set the AVFMT_TS_NONSTRICT flag
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

* commit '01f251c4':
  rtpenc: Set the timestamp properly when sending mpegts data, too
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

* commit 'f2c614e8':
  srtpproto: fix option flag type
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

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

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

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

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

Fixes integer overflow
Fixes: signal_sigsegv_1b0a4da_1865_cov_2167818389_computer_anger.avi
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

This avoids trying to do sliced encoding, even if a slice/packet
size is requested (via the -ps option or the rtp_payload_size
field), since the encoder currently doesn't support it (or at least
our decoder can't decode it, even if the h261_encode_gob_header
function is hooked up to be called from the slicing part in
mpegvideo_enc.c).
Signed-off-by: NMartin Storsjö <martin@martin.st>

If we throw away the buffered incomplete frame, make sure to also
throw away the buffered bits of an incomplete byte at the same
time.

CC: libav-stable@libav.org
Signed-off-by: NMartin Storsjö <martin@martin.st>

In particular, when packetizing mpegts into rtp, the input packet
timestamp may come from more than one stream, which could cause
multiple packets be written with the same timestamp.
Signed-off-by: NMartin Storsjö <martin@martin.st>

Signed-off-by: NMartin Storsjö <martin@martin.st>

Signed-off-by: NMartin Storsjö <martin@martin.st>

Fixes undefined behavior
Fixes: signal_sigsegv_14768d2_2248_cov_3629497219_h264_h264___pi_20070614T182942.h264
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Fixes undefined behavior
Fixes: asan_static-oob_17aa046_582_cov_1577759978_DBLK_G_VIXS_1.bit
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

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

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

Fixes use of freed memory

Fixes: case5_av_frame_copy_props.mp4
Found-by: NMichal Zalewski <lcamtuf@coredump.cx>
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

This avoids use of uninitialized memory
Fixes: asan_static-oob_17aa046_582_cov_212287884_DBLK_G_VIXS_1.bit
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Fixes null pointer dereference
Fixes: signal_sigsegv_369609d_623_cov_2008234281_ES_6.1_16bit.dts
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

* commit '456e93bf':
  dashenc: Adjust the start time of a segment to the end of the previous segment
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

* commit '2f628d59':
  dashenc: Write segment timelines properly if the timeline has gaps
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

This is the same adjustment that the mp4 muxer does to the start
timestamp of fragments, since the timestamp of a sample in an mp4
file is implicit from the sum of earlier sample durations.

This avoids gaps in the timeline (which can stop dash.js from
playing it back), and makes sure the timestamp on the segmenter
level matches what the mp4 muxer actually writes into the segments.

This is only an issue if the AVPacket duration of the last
packet of a segment doesn't point to the actual start timestamp
of the next packet (the first in the next segment).
Signed-off-by: NMartin Storsjö <martin@martin.st>

Write a new start time if the duration of the previous segment
didn't match the start of the next one. Check that segments
actually are continuous before writing a repeat count.

This makes sure timestamps deduced from the timeline actually
match the real start timestamp as written in filenames (if
using a template containing $Time$).
Signed-off-by: NMartin Storsjö <martin@martin.st>

Fixes use of uninitialized memory
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

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

Fixes out of array read
Fixes: signal_sigsegv_1b0a4da_1865_cov_2167818389_computer_anger.avi
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Should improve cache usage and reduces stack usage.
Also reduces number of copies in case many levels
have the same number of bits.
Signed-off-by: NReimar Döffinger <Reimar.Doeffinger@gmx.de>