This class contains a pool of objects that can be used and reused
while minimizing the amount of required memory allocation and
deallocation operations

Currently m_latestDRAPPOC for pictures which follow DRAP is always MAX_INT.

This prevents checkConformanceForDRAP() from checking active ref pic constraints

It seems that caller of activateAPS() expects that pointers to lmcsAPS and scalingListAPS are updated.

However they are not and then checkParameterSetsInclusionSEIconstraints() does not perform proper checks for LMCS and ScalingList APSs

Kirill Suverov authored 2 years ago and Nikolay Shostak committed 2 years ago

For multi-layer OLS a corresponding PTL from VPS should be used.

Otherwise this list is appended by SEI NALUs from the next frame
and checkSeiContentInAccessUnit() may falsely fail.

Ticket #1563

Get PTL from VPS in case of Multi-layer OLS.

Refactor ProfileLevelTierFeatures::extractPTLInformation to accept PTL
from VPS, not only from SPS.

When vps_pt_present_flag[i] == 0, infer Profile, Tier and constraint
info for i-th PTL to be the same as that for (i-1)-th PTL.

sh_no_output_of_prior_pics_flag is unconditionally overridden here.

According to Spec this allowed (but not mandatory) only if one of
critical parameters has changed: PicWidthMaxInSamplesY,
PicHeightMaxInSamplesY, MaxChromaFormat, MaxBitDepthMinus8, or
dpb_max_dec_pic_buffering_minus1.

m_accessUnitPicInfo may be empty in DecLib::checkLayerIdIncludedInCvss()
when the bitstream ends after skipping pictures.
m_accessUnitPicInfo.begin() is undefined in that case.

Move the codes related to marking pics not to be outputted to location later after the value of NoOutputBeforeRecoveryFlag has been derived.

Add the check on value of NoOutputBeforeRecoveryFlag to the existing if condition

Update the check if the picture is CRA to be the check if the current picture is an IRAP.

Applying no output of prior pics flag only once per Au