hevc: check that the VCL NAL types are the same for all slice segments of a frame

Fixes possible invalid memory access for mismatching skipped/non-skipped
slice segments.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Sample-Id: 00001533-google
vf_overlay: add eof_action switch

Signed-off-by: Anton Khirnov <anton@khirnov.net>
utvideoenc: Add support for the new BT.709 FourCCs for YCbCr

With cli usage the decoder might have not set the colorspace during
encoder init, manual colorspace override might be needed in such
cases.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
lavf: do basic sanity checking on muxed packets

Reject packets for non-existing or attachment streams.
lavf: ignore attachment streams for interleaving purposes

Those streams should never get any packets by definition.
vp8: use a fixed-size edge emu buffer

The reason is the same as for e588615d938f8581f0d6f3771662d08cadfc00de

Based on a patch by Ronald S. Bultje <rsbultje@gmail.com>
h264: reset data partitioning at the beginning of each decode call

Prevents using GetBitContexts with data from previous calls.

Fixes access to freed memory.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org
jvdec: K&R formatting cosmetics

Signed-off-by: Diego Biurrun <diego@biurrun.de>
avcodec: Suppress deprecation warnings from avcodec_alloc_frame()

The function is itself obsolete and slated for removal.
samplefmt: avoid integer overflow in av_samples_get_buffer_size()

CC:libav-stable@libav.org
eacmv: clear references on frame dimensions change

Fixes invalid reads.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org
shorten: pad the internal bitstream buffer

Fixes invalid reads.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org
truemotion1: check the header size

Fixes invalid reads.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org
lagarith: reallocate rgb_planes when needed

Fixes invalid writes on pixel format changes.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org
lavf: improve handling of sparse streams when muxing

Currently ff_interleave_packet_per_dts() waits until it gets a frame for
each stream before outputting packets in interleaved order.

Sparse streams (i.e. streams with much fewer packets than the other
streams, like subtitles or audio with DTX) tend to add up latency and in
specific cases end up allocating a large amount of memory.

Emit the top packet from the packet_buffer if it has a time delta
larger than a specified threshold.

Original report of the issue and initial proposed solution by
mus.svz@gmail.com.

Bug-id: 31
Signed-off-by: Anton Khirnov <anton@khirnov.net>
doxy: Format @code blocks so they render properly

@code command reports verbatim everything between it and @endcode.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
mpeg: K&R formatting cosmetics

Also adjust header #include order and some comments.

Signed-off-by: Diego Biurrun <diego@biurrun.de>
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
lavu: add missing log.h include in timer.h
fate: force the simple idct for xvid custom matrix test

The original test without a forced idct is still useful since it tests
the switching of the idct algorithm/permutation on x86 with MMX. MMXext
or SSE2. Make sure the test runs only if MMX inline asm is available and
force -cpuflags to all.
Add the required bitexact flag for both tests.