research-v5.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-D026: Temporal motion projection improvements
- CWG-D016: Improved angular intra prediction modes
- CWG-D020: Improved Signaling Scheme for ERP
- CWG-D045: Prediction Mode Dependent Skip Transform
- CWG-D023: DC-based TX Restriction and EOB Alignment
- CWG-D047: Add by-pass check in deblocking strength decision
- CWG-D027: compound weighted prediction
- CWG-D043: Bug Fix for H-Partitions
- CWG-D010 + CWG-D052: Non-separable wiener filter improvements
- CWG_D041: Extended Intra Prediction Angles
- CWG-D035: Uneven 4-way partitions
- CWG-C034: Intra Directional Interpolation Filter
- CWG-D059: Explicit Frame Distance Calculation
- CWG-D034: Improved Global Motion
- Disable global motion by default (related to CWG-D034)
- Signal CFL Downsampling Filter in Sequence Header (Decision from CWG
  Call on 2023/06/16)
- CWG-D015: Wedge Blending Improvement
- CWG-D074: SMVP Fix
- CWG-D029: On downsampling filter in CfL mode
- CWG-D067: Improved warp motion of AVM (Aspects 1 and 2)
- CWG-D031: Sub-block based MV refinement
- CWG-D028: On downsampling filter in the CfL mode for the 4:2:2 chroma
  format
- CWG-D060: Separate DRL for Compound Prediction
- CWG-D071: Implicit Masked Blending Mode / Boundary-aware Compound
  Prediction
- CWG-D046: Blending Modes For Intra Prediction
- CWG-D061: Improve Encoding Speed of ERP
- CWG-D014: (Disabled by default) Frame Output Process Based On Order
  Hint

Code Cleanups
-------------
- Inspection / Accounting improvements
- CWG-D037, #3: Combine multiple compile-time flags into one

Gitlab CI Updates
-----------------
- CWG-D037, #6: More helpful error messages for failed CI jobs, which
  point to relevant wiki.
- Speed-up Per-MR CI
- Speed-up Nightly CI
- Add Decode Checks in CI

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/5#tab-issues

Release candidate #1 for research-v5.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-D026: Temporal motion projection improvements
- CWG-D016: Improved angular intra prediction modes
- CWG-D020: Improved Signaling Scheme for ERP
- CWG-D045: Prediction Mode Dependent Skip Transform
- CWG-D023: DC-based TX Restriction and EOB Alignment
- CWG-D047: Add by-pass check in deblocking strength decision
- CWG-D027: compound weighted prediction
- CWG-D043: Bug Fix for H-Partitions
- CWG-D010 + CWG-D052: Non-separable wiener filter improvements
- CWG_D041: Extended Intra Prediction Angles
- CWG-D035: Uneven 4-way partitions
- CWG-C034: Intra Directional Interpolation Filter
- CWG-D059: Explicit Frame Distance Calculation
- CWG-D034: Improved Global Motion
- Disable global motion by default (related to CWG-D034)
- Signal CFL Downsampling Filter in Sequence Header (Decision from CWG
  Call on 2023/06/16)
- CWG-D015: Wedge Blending Improvement
- CWG-D074: SMVP Fix
- CWG-D029: On downsampling filter in CfL mode
- CWG-D067: Improved warp motion of AVM (Aspects 1 and 2)
- CWG-D031: Sub-block based MV refinement
- CWG-D028: On downsampling filter in the CfL mode for the 4:2:2 chroma
  format
- CWG-D060: Separate DRL for Compound Prediction
- CWG-D071: Implicit Masked Blending Mode / Boundary-aware Compound
  Prediction
- CWG-D046: Blending Modes For Intra Prediction
- CWG-D061: Improve Encoding Speed of ERP
- CWG-D014: (Disabled by default) Frame Output Process Based On Order
  Hint

Code Cleanups
-------------
- Inspection / Accounting improvements

Gitlab CI Updates
-----------------
- CWG-D037, #6: More helpful error messages for failed CI jobs, which
  point to relevant wiki.
- Speed-up Per-MR CI
- Speed-up Nightly CI
- Add Decode Checks in CI

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/5#tab-issues

research-v4.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-C020: Flex MV precisions
- CWG-C030: Frame-level on/off flag for CDEF
- CWG-C044: Improved CfL prediction mode
- CWG-C043: MVP list improvements
- CWG-C035: Optical flow refinement for TIP frames
- CWG-C042: Allow Same-Ref Compound
- CWG-C050: Extended Warp Prediction tools
- CWG-C033: Skip mode DRL list with reference index
- CWG-C053: Improved JMVD coding
- CWG-C059 / CWG-C060: Coefficient Coding and New TX Sets
- CWG-C063: Improved TMVP candidates
- CWG-C061: WRL for warp-delta mode
- CWG-C064: A SIMD Implementation for CCSO Filter
- CWG-C054: On downsampling filter in CfL mode
- CWG-C071: Subblock MV from Local Warp
- CWG-C039: Parity hiding for transform block
- CWG-C075: Entropy coding context modeling improvement
- CWG-C076: Inter mode contexts
- CWG-C069: Block adaptive local weighted prediction
- CWG-B010: New transform partitions (enable by default)
- CWG-C068: Cross-chroma Component Transforms
- CWG-C080: Improved Warp
- CWG-C073: A Simplified Transform Set and Configurable Transform Partitioning
- CWG-C087: On Local Warp Parsing Dependency
- CWG-C089: On warp motion of AVM
- CWG-C086: Prediction Enhancement Filter
- CWG-B084: Extended Recursive Partitions
- CWG-C079: Entropy Bypass Improvement
- CWG-C092: Wedge Mode Extensions
- CWG-C016: Extensions to Loop-Restoration
- CWG-C080: ERP Amendment: H-Partitions

Code Cleanups
-------------
- Remove all `CONVERT_TO_BYTEPTR` and `CONVERT_TO_SHORTPTR` from codebase
- CWG-C091: Removal of Compile Time Flags

Gitlab CI Updates
-----------------
- Nightly test to ensure parallel / serial GOP encodes match

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/4#tab-issues

Release candidate #1 for research-v4.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-C020: Flex MV precisions
- CWG-C030: Frame-level on/off flag for CDEF
- CWG-C044: Improved CfL prediction mode
- CWG-C043: MVP list improvements
- CWG-C035: Optical flow refinement for TIP frames
- CWG-C042: Allow Same-Ref Compound
- CWG-C050: Extended Warp Prediction tools
- CWG-C033: Skip mode DRL list with reference index
- CWG-C053: Improved JMVD coding
- CWG-C059 / CWG-C060: Coefficient Coding and New TX Sets
- CWG-C063: Improved TMVP candidates
- CWG-C061: WRL for warp-delta mode
- CWG-C064: A SIMD Implementation for CCSO Filter
- CWG-C054: On downsampling filter in CfL mode
- CWG-C071: Subblock MV from Local Warp
- CWG-C039: Parity hiding for transform block
- CWG-C075: Entropy coding context modeling improvement
- CWG-C076: Inter mode contexts
- CWG-C069: Block adaptive local weighted prediction
- CWG-B010: New transform partitions (enable by default)
- CWG-C068: Cross-chroma Component Transforms
- CWG-C080: Improved Warp
- CWG-C073: A Simplified Transform Set and Configurable Transform Partitioning
- CWG-C087: On Local Warp Parsing Dependency
- CWG-C089: On warp motion of AVM
- CWG-C086: Prediction Enhancement Filter
- CWG-B084: Extended Recursive Partitions
- CWG-C079: Entropy Bypass Improvement
- CWG-C092: Wedge Mode Extensions
- CWG-C016: Extensions to Loop-Restoration
- CWG-C080: ERP Amendment: H-Partitions

Code Cleanups
-------------
- Remove all `CONVERT_TO_BYTEPTR` and `CONVERT_TO_SHORTPTR` from codebase
- CWG-C091: Removal of Compile Time Flags

Gitlab CI Updates
-----------------
- Nightly test to ensure parallel / serial GOP encodes match

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/4#tab-issues

Includes the following changes since research-v3.0.0 anchor:

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/milestones/3#tab-issues

Added feature
--------
-  Frame hash metadata is added for checking the enc/dec mismatch.

research-v3.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-B023 REF_MV_BANK
- CWG-B041 Optical Flow MV Refinement
- CWG-B079 Interpolation Filter Consistency Fix in Optical Flow MV Refinement
- CWG-B056 Intra Bi-Prediction
- CWG-B068 Adaptive Intra Mode Coding (AIMC)
- CWG-B053 Complexity-scalable MVP
- CWG-B076 Scan order alignment and bugfix for IST
- CWG-B065 Modified context derivation
- CWG-B098 Improvements to IST
- CWG-B081 Search range extension for IntraBC
- CWG-B099 Improved CCSO with luma extension and band feature
- CWG-B092 Advanced MVD coding
- CWG-C002 Forward Skip Coding for Prediction Residuals (FSC)
- CWG-C011 Improved AMVD
- CWG-C005 Improved Palette Coding
- CWG-B091 New Reference Signaling
- CWG-C019 SKIP_MODE_ENHANCEMENT
- CWG-C014 New Deblocking Filter
- CWG-C025 BVP_IMPROVEMENT
- CWG-C007 Temporal Interpolated Prediction Mode
- CWG-C031: Rate cost update for block vector

Code Cleanups
-------------
- CWG-B086 Removal of DIST_WTD_COMP code
- CWG-B086 Removal of DUAL_FILTER code
- CWG-B086 Removal of SVC Features
- CWG-B086 Removal of some compile-time flags
- CWG-B086 Removal of 8-bit pipeline from encoder and decoder

Gitlab CI Updates
-----------------
- Upgraded GCC to version 11
- Upgraded LLVM to version 12
- Added developer wiki for reproducing CI failures

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/issues/?sort=created_date&state=closed&milestone_title=research-v3.0.0%20anchor%20release

Release candidate #1 for research-v3.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-B023 REF_MV_BANK
- CWG-B041 Optical Flow MV Refinement
- CWG-B079 Interpolation Filter Consistency Fix in Optical Flow MV Refinement
- CWG-B056 Intra Bi-Prediction
- CWG-B068 Adaptive Intra Mode Coding (AIMC)
- CWG-B053 Complexity-scalable MVP
- CWG-B076 Scan order alignment and bugfix for IST
- CWG-B065 Modified context derivation
- CWG-B098 Improvements to IST
- CWG-B081 Search range extension for IntraBC
- CWG-B099 Improved CCSO with luma extension and band feature
- CWG-B092 Advanced MVD coding
- CWG-C002 Forward Skip Coding for Prediction Residuals (FSC)
- CWG-C011 Improved AMVD
- CWG-C005 Improved Palette Coding
- CWG-B091 New Reference Signaling
- CWG-C019 SKIP_MODE_ENHANCEMENT
- CWG-C014 New Deblocking Filter
- CWG-C025 BVP_IMPROVEMENT
- CWG-C007 Temporal Interpolated Prediction Mode
- CWG-C031: Rate cost update for block vector

Code Cleanups
-------------
- CWG-B086 Removal of DIST_WTD_COMP code
- CWG-B086 Removal of DUAL_FILTER code
- CWG-B086 Removal of SVC Features
- CWG-B086 Removal of some compile-time flags

Gitlab CI Updates
-----------------
- Upgraded GCC to version 11
- Upgraded LLVM to version 12
- Developer Wiki for Reproducing CI Failures

Bugfixes
--------
https://gitlab.com/AOMediaCodec/avm/-/issues/?sort=created_date&state=closed&milestone_title=research-v3.0.0%20anchor%20release

Open issues
-----------
https://gitlab.com/AOMediaCodec/avm/-/issues/?sort=created_date&state=opened&milestone_title=research-v3.0.0%20anchor%20release

research anchor v1 with only EXTQUANT and no dc_deltaq offset

research anchor v1 with only EXTQUANT

research-v2.0.0 anchor.

Includes the following since the previous anchor:

Candidate Tools
---------------
- CWG-B007 EXTQUANT
- CWG-B006 SDP
- CWG-B009 COMPOUND_WARP_SAMPLES
- CWG-B010 NEW_TX_PARTITION
- CWG-B030 MRLS
- CWG-B019 ORIP
- CWG-B016 IST
- CWG-B022 CCSO
- CWG-B018 NEW_INTER_MODES
- CWG-B049 MVP Improvement (SMVP and TMVP components)

Major Encoder-Only Changes
--------------------------
- CWG-B034 Reference picture mapping fixes
- (Part of) CWG-B030 MRLS Intra mode search improvement
- CWG-B058 Real-time mode removal
- CWG-B060 Improvements to qOffset Computation
- Adjust screen content detection thresholds
- Use 16-bit internal pipeline always

Bugfixes
--------
* From aomedia tracker (https://crbug.com/aomedia/):
  - aomedia:2842
  - aomedia:2875
  - aomedia:2928
  - aomedia:2933
  - aomedia:2934
  - aomedia:2936
  - aomedia:2944
  - aomedia:2957
  - aomedia:2961
  - aomedia:2968
  - aomedia:2972
  - aomedia:3004
  - aomedia:3006
  - aomedia:3016
  - aomedia:3051
  - aomedia:3065
  - aomedia:3080
  - aomedia:3084
  - aomedia:3086
  - aomedia:3087
  - aomedia:3089
  - aomedia:3090
  - aomedia:3091
  - aomedia:3092
  - aomedia:3094
  - aomedia:3108
  - aomedia:3112

* From gitlab tracker:
  - https://gitlab.com/AOMediaCodec/avm/-/issues/1
  - https://gitlab.com/AOMediaCodec/avm/-/issues/2
  - https://gitlab.com/AOMediaCodec/avm/-/issues/3
  - https://gitlab.com/AOMediaCodec/avm/-/issues/4
  - https://gitlab.com/AOMediaCodec/avm/-/issues/5
  - https://gitlab.com/AOMediaCodec/avm/-/issues/6
  - https://gitlab.com/AOMediaCodec/avm/-/issues/8
  - https://gitlab.com/AOMediaCodec/avm/-/issues/9
  - https://gitlab.com/AOMediaCodec/avm/-/issues/10

Release candidate 1 for research-v2.0.0

Includes the following:

* Candidate Tools
-----------------
CWG-B007 EXTQUANT
CWG-B006 SDP
CWG-B009 COMPOUND_WARP_SAMPLES
CWG-B010 NEW_TX_PARTITION
CWG-B030 MRLS
CWG-B019 ORIP
CWG-B016 IST
CWG-B022 CCSO
CWG-B018 NEW_INTER_MODES
CWG-B049 MVP Improvement (SMVP and TMVP components)

* Major Encoder-Only Changes
----------------------------

CWG-B034 Reference picture mapping fixes
(Part of) CWG-B030 MRLS Intra mode search improvement
CWG-B058 Real-time mode removal

* Bugfixes
----------
(Tracker is here: https://crbug.com/aomedia/)

aomedia:2842
aomedia:2875
aomedia:2928
aomedia:2933
aomedia:2934
aomedia:2936
aomedia:2944
aomedia:2957
aomedia:2961
aomedia:2968
aomedia:2972
aomedia:3004
aomedia:3006
aomedia:3016
aomedia:3051
aomedia:3065
aomedia:3080
aomedia:3084
aomedia:3086
aomedia:3087
aomedia:3089
aomedia:3090
aomedia:3091
aomedia:3092
aomedia:3094
aomedia:3108
aomedia:3112

This release includes several bug fixes.

BUG=aomedia:2928
BUG=aomedia:2933
BUG=aomedia:2875
BUG=aomedia:2968
BUG=aomedia:2957
BUG=aomedia:2972
BUG=aomedia:2957
BUG=aomedia:2928
BUG=aomedia:2944
BUG=aomedia:2936

The link to the issue tracker is https://bugs.chromium.org/p/aomedia/issues/list

Starting anchor for AV2 research