Commit graph

9 commits

Author SHA1 Message Date
Wu Jianhua
9481887755 avcodec/vvcdec: add Intra Block Copy parser
Co-authored-by: Nuo Mi <nuomi2021@gmail.com>
2024-02-24 20:24:56 +08:00
Nuo Mi
422e8a877b avcodec/vvcdec: refact, rename !is_mvp to check_mer
For IBC, we'll utilize the check_available function.
However, neither MVP nor merge mode need to check the motion estimation region.
Let's rename it to avoid confusion.
2024-02-24 20:24:56 +08:00
Nuo Mi
c503c0b33e avcodec/vvcdec: ff_vvc_set_intra_mvf, refact to support dmvr tab 2024-02-24 20:24:55 +08:00
Wu Jianhua
09946dc40b avcodec/vvcdec: implement update_hmvp for IBC
Signed-off-by: Wu Jianhua <toqsxw@outlook.com>
Signed-off-by: Nuo Mi <nuomi2021@gmail.com>
2024-02-24 20:24:55 +08:00
Frank Plowman
acacf8a313 lavc/vvc: Use pps->{width, height} over sps->{width, height}
The PPS should be used instead of the SPS to get the current picture's
dimensions.  Using the SPS can cause issues if the resolution changes
mid-sequence.  In particular, it was leading to invalid memory accesses
if the resolution decreased.

Patch replaces sps->{width,height} with pps->{width,height}.  It also
removes sps->{width,height}, as these are no longer used anywhere.

Fixes crash when decoding DVB V&V test sequence
VVC_HDR_UHDTV1_ClosedGOP_Max3840x2160_50fps_HLG10_res_change_without_RPR

Signed-off-by: Frank Plowman <post@frankplowman.com>
2024-02-16 12:05:03 +08:00
James Almer
cb6a488fba avcodec/vvc_mvs: remove an unnecessary AV_ZERO64() call
Should fix "member access within misaligned address 0xf00 for type 'const union
av_alias64', which requires 8 byte alignment" errors as reported by GCC ubsan.

Signed-off-by: James Almer <jamrial@gmail.com>
2024-01-24 12:41:01 -03:00
James Almer
bc1d8a9b76 avcodec/vvc_mvs: align local motion vector fields
Should fix "member access within misaligned address 0xf00 for type 'const union
av_alias64', which requires 8 byte alignment" errors as reported by GCC ubsan.

Signed-off-by: James Almer <jamrial@gmail.com>
2024-01-24 12:41:01 -03:00
Frank Plowman
8157b5d405 lavc/vvc: Remove left shifts of negative values
VVC specifies << as arithmetic left shift, i.e. x << y is equivalent to
x * pow2(y).  C's << on the other hand has UB if x is negative.  This
patch removes all UB resulting from this, mostly by replacing x << y
with x * (1 << y), but there are also a couple places where the OOP was
changed instead.

Signed-off-by: Frank Plowman <post@frankplowman.com>
Signed-off-by: James Almer <jamrial@gmail.com>
2024-01-23 11:17:05 -03:00
Nuo Mi
603d0bd171 vvcdec: add motion vector decoder
Co-authored-by: Xu Mu <toxumu@outlook.com>
Co-authored-by: Frank Plowman <post@frankplowman.com>
Co-authored-by: Shaun Loo <shaunloo10@gmail.com>
Co-authored-by: Wu Jianhua <toqsxw@outlook.com>
2024-01-03 23:15:11 +08:00