Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Fixes slice threading.

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

It's not even used anymore, and the checks are no longer
functionally important.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Fixes Ticket5319

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Functionality used before didn't widen the values from limited to
full range. Additionally, now the decoder uses BT.709 where it
should be used according to the video resolution.

Default for not yet set colorimetry is BT.709 due to most observed
HDMV content being HD.

BT.709 coefficients were gathered from the first two parts of BT.709
to BT.2020 conversion guide in ARIB STD-B62 (Pt. 1, Chapter 6.2.2).
They were additionally confirmed by manually calculating values.

Fixes #4637

* commit 'cdb1665f70def544ddab3e3ed3763ef99c8b3873':
  aarch64: Make transpose_4x4H do a regular transpose

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

This merge is a no-op.

* commit 'edf54887e2935a30f9d9a46dd806802c3c867c0e':
  rtpdec_jpeg: fix low contrast image on low quality setting

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

* commit '159323897f545e7405fb9db234e0ba123e174376':
  intrax8: Add a local BlockDSPContext and initialize it

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

* commit '1eaae7abb8f208fefb4e8b9e983e61b2499206a3':
  intrax8: Reference the current AVCodecContext

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

* commit '8072345e9f86d88fbc4a15c17cb03f1e4701c9a5':
  intrax8: Keep a reference to the GetBitContext reader

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

* commit '65f14128c4bcf8fcd9d3ba1e20b7a22057c9cfb0':
  intrax8: Use a constant buffer instead of a ScratchpadContext

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

* commit 'eaeba6f241e0de0e797be10f8fda967ef8489e64':
  intrax8: Pass the output frame to the decoding function

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

* commit '577393321c389ad2973bec6168a8045c94a9e099':
  intrax8: Carry over the loopfilter value in ff_intrax8_decode_picture

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

* commit '68127e1bf8037a6e0acd6401cc8c5da950e3fa0a':
  intrax8: Keep a reference to the context idctdsp

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

* commit '65127450add50c3bca307edc0517d2e8382717a0':
  intrax8: Make x8_init_block_index not use mpegvideo fields

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

* commit '922b7e6d86e6197dfa5ebde602dd12cc66fb5f1f':
  intrax8: Use local destination buffers

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

* commit 'a7da517f6a5c472f46f67dd33bb6b95ccc919923':
  h264data: Move all data tables from a header to a .c file

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

* commit 'f4d581cda3897f66c1dda7586b93f86a591dbbef':
  lavc: Deduplicate zigzag_scan table

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Fixes segfault
Fixes Ticket5347

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

* commit '02cd8bb9cb4381c50f42a9284098cc8a33d397db':
  h264: Clean up #includes

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Fixes null pointer dereference

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

And simplify and explain the expression.

Fault introduced in f3fdef108e

It is always equal to nb_slice_ctx.

This is more correct and avoids wasting space when frame threading is
used.

This limit is now unnecessary, we can easily support an arbitrary number
of threads.

Those should already be set to the correct values.

In such a case, decode the MBs in parallel without the loop filter, then
execute the filter serially.

The ref2frm array was previously moved to H264SliceContext. That was
incorrect, since it applies to all the slices and should properly be in
H264Context (it did not actually break decoding, since this distinction
only becomes relevant with slice threading and deblocking_filter=1,
which was not implemented before this commit). The ref2frm array is thus
moved back to H264Context.

It is not used for anything internally, just exported in the output
frames. So remove the indirection and set it directly in frame_start().

It is no longer called from outside the h264 decoder.

It is always unconditionally initialized in decode_postinit() and then
immediately used in one place further below. All the other places where
it is accessed are just useless fluff.

This comment used to apply to code that was removed.

It is very fragile against fields being moved and hides what is actually
being copied. Copy all the fields explicitly instead.

This will allow decoupling the parser from the decoder.

Make the SEI parsing independent of the H264Context, to allow
decoupling the parser from the decoder.

This will allow decoupling the parser from the decoder.

Make the SPS/PPS parsing independent of the H264Context, to allow
decoupling the parser from the decoder. The change is modelled after the
one done earlier for HEVC.

Move the dequant buffers to the PPS to avoid complex checks whether they
changed and an expensive copy for frame threads.

It is no longer needed for anything.

This will allow decoupling the parser from the decoder.

It is no longer necessary after 741b494fa8

It has nothing to do with the reference count and so does not belong in
this function.

Remove now unused ff_h264_decode_nal().