Parse picture_struct SEI value.

Makes sum always flat. Also faster.

Should fix make checkheaders
Signed-off-by: NJames Almer <jamrial@gmail.com>

Signed-off-by: NJames Almer <jamrial@gmail.com>

The default is not to write SDT and PAT periodically, only in the beginning of
every segment. After this patch the user might override this if needed.
Signed-off-by: NMarton Balint <cus@passwd.hu>

Sometimes it has not been checked whether opening the dynamic buffer for
writing Tags fails; this might have led to segfaults.
Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

The original inline assembly and nasm code have the same fps when called by command.
NASM code almost has no impact on the perfromance.
Signed-off-by: NTing Fu <ting.fu@intel.com>
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

The spec states there aren't any.
Signed-off-by: NJames Almer <jamrial@gmail.com>

This fixes the tests filter-refcmp-ssim-yuv and filter-refcmp-ssim-rgb
on i386 after breaking in fcc0424c.
Signed-off-by: NMartin Storsjö <martin@martin.st>

Signed-off-by: NJames Almer <jamrial@gmail.com>

The check_x86asm() checks would force enable these variables on success,
bypassing any --disable-* command line option.
This is important in the case of AVX512, where the relevant define is used
to choose between different values for memory alignment and strides in
some allocations.
Signed-off-by: NJames Almer <jamrial@gmail.com>

There's enough going on here now that it should not be duplicated
between cuda_device_create and cuda_device_derive.

This commit adds a chromatic aberration filter for Vulkan that attempts to
emulate a lens chromatic aberration effect.
For a YUV frame it will instead shift the chroma channels, providing a
simple approximation.

This commit adds a fast avgblur Vulkan filter.
This will reset Intel GPUs on Linux due to a known, two-year-old driver bug
(!834 on mesa's gitlab).

This commit adds a basic, non-converting overlay filter for Vulkan.

This commit adds a basic, non-converting Vulkan scaling filter.

This commit adds a Vulkan filtering infrastructure for libavfilter.
It attempts to abstract as much as possible of the Vulkan API from filters.

The way the hwcontext and the framework are designed permits for parallel,
non-CPU-blocking filtering throughout, with the exception of up/downloading
and mapping.

As we find ourselves wanting a way to transfer frames between
HW devices (or more realistically, between APIs on the same device),
it's desirable to have a way to describe the relationship. While
we could imagine introducing a `hwtransfer` filter, there is
almost no difference from `hwupload`. The main new feature we need
is a way to specify the target device. Having a single device
for the filter chain is obviously insufficient if we're dealing
with two devices.

So let's add a way to specify the upload target device, and if none
is specified, continue with the existing behaviour.

We must also correctly preserve the sw_format on such a transfer.

This commit adds the necessary code to initialize and use a Vulkan device
within the hwcontext libavutil framework.
Currently direct mapping to VAAPI and DRM frames is functional, and
transfers to CUDA and native frames are supported.

Lets hope the future Vulkan video decode extension fits well within this
framework.

We are beginning to consider scenarios where a given HW Context
may be able to transfer frames to another HW Context without
passing via system memory - this would usually be when two
contexts represent different APIs on the same device (eg: Vulkan
and CUDA).

This is modelled as a transfer, as we have today, but where both
the src and the dst are hardware frames with hw contexts. We need
to be careful to ensure the contexts are compatible - particularly,
we cannot do transfers where one of the frames has been mapped via
a derived frames context - we can only do transfers for frames that
were directly allocated by the specified context.

Additionally, as we have two hardware contexts, the transfer function
could be implemented by either (or indeed both). To handle this
uncertainty, we explicitly look for ENOSYS as an indicator to try
the transfer in the other direction before giving up.

Signed-off-by: NZane van Iperen <zane@zanevaniperen.com>
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Previously, the default palette would always be used.
Now, we can accept a custom palette, just like dvdsubdec does.
Signed-off-by: NMichael Kuron <michael.kuron@gmail.com>
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Signed-off-by: NMichael Kuron <michael.kuron@gmail.com>
Signed-off-by: NMichael Niedermayer <michael@niedermayer.cc>

Use doubles for accumulating floats.

When no codebook is used, huff_lsbs can be more than 24 and still decode to
original values once filters are applied.
Signed-off-by: NJai Luthra <me@jailuthra.in>

Signed-off-by: NJai Luthra <me@jailuthra.in>

Signed-off-by: NJai Luthra <me@jailuthra.in>

* fix a possible memory leak (apply_filter returned before freeing)
* use apply_filters in process_major_frame
* revert back to checking bounds with 24 bitdepth, as huff offset takes
care of it
Signed-off-by: NJai Luthra <me@jailuthra.in>

Fixes Coverity CID 1396239.
Signed-off-by: NJai Luthra <me@jailuthra.in>

huff offset wasn't always within the bounds before, which lead to
corrupt encoding that didn't always trigger lossless check failures
Signed-off-by: NJai Luthra <me@jailuthra.in>

we need two bits instead of one bit to represent -1 in bitstream
Signed-off-by: NJai Luthra <me@jailuthra.in>

A value of 24 and above can collaps the range to 0 which would not work.

Fixes: Timeout (75sec -> 21sec)
Fixes: 18707/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_LAGARITH_fuzzer-5708950892969984

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: NMichael Niedermayer <michael@niedermayer.cc>