Log Message:
libaom: Update 3.7.0

Changelog:
2023-08-10 v3.7.0
  This release includes new codec interfaces, compression efficiency and
  perceptual improvements, speedup and memory optimizations and many bug fixes.
  This release is ABI compatible with the last release.

  - New Features
    * New codec controls:
      * AV1E_SET_QUANTIZER_ONE_PASS: Set quantizer for each frame.
      * AV1E_ENABLE_RATE_GUIDE_DELTAQ: enable the rate distribution guided delta
        quantization in all intra mode. The "enable-rate-guide-deltaq" \ 
option is
        added for this control.
      * AV1E_SET_RATE_DISTRIBUTION_INFO: set the input file for rate
        distribution used in all intra mode. The \ 
"rate-distribution-info" option
        is added for this control.
      * AV1E_GET_LUMA_CDEF_STRENGTH
      * AV1E_SET_BITRATE_ONE_PASS_CBR
    * AOM_SCALING_MODE is extended to include 2/3 and 1/3 scaling.
    * aom_tune_metric is extended to include AOM_TUNE_VMAF_SALIENCY_MAP.
      The "tune" option is extended to include \ 
"vmaf_saliency_map".
    * SVC example encoder svc_encoder_rtc is able to use the rate control
      library.
    * Loopfilter level and CDEF filter level is supported by RTC rate control
      library.
    * New speed (--cpu-used) 11, intended for RTC screen sharing, added for
      faster encoding with ~3% bdrate loss with 16% IC (instruction count)
      speedup compared to speed 10.

  - Compression Efficiency Improvements
    * Improved VoD encoding performance
      * 0.1-0.6% BDrate gains for encoding speeds 2 to 6
      * Rate control accuracy improvement in VBR mode
    * RTC encoding improvements
      * Screen content mode: 10-19% BDrate gains for speeds 6 - 10
      * Temporal layers video mode, for speed 10:
        * 2 temporal layers on low resolutions: 13-15% BDrate gain
        * 3 temporal layers on VGA/HD: 3-4% BDrate gain

  - Perceptual Quality Improvements
    * Fixed multiple block and color artifacts for RTC screen content by
      * Incorporating color into RD cost for IDTX
      * Reducing thresholds for palette mode in non RD mode
      * Allowing more palette mode testing
    * Improved color sensitivity for altref in non-RD mode.
    * Reduced video flickering for temporal layer encoding.

  - Speedup and Memory Optimizations
    * Speed up the VoD encoder
      * 2-5% for encoding speed 2 to 4
      * 9-15% for encoding speed 5 to 6
      * ARM
        * Standard bitdepth
          * speed 5: +31%
          * speed 4: +2%
          * speed 3: +9%
          * speed 2: +157%
        * High bitdepth
          * speed 5: +85%
    * RTC speedups
      * Screen content mode
        * 15% IC speedup for speeds 6-8
        * ARM: 7% for speed 9, 3% for speed 10
      * Temporal layers video mode
        * 7% speedup for 3 temporal layers on VGA/HD, for speed 10
      * Single layer video
        * x86: 2% IC speedup for speeds 7-10
        * ARM: 2-4% speedup across speeds 5-10

  - Other improvements
    * VoD: Major improvements to global motion estimation, now enabled up to
      speed 4
    * RTC
      * Fixes to make lossless coding work.
      * Fixes to make frame dropper (--drop_frames) work for single and temporal
        layers.
      * Improvements to RPS (reference picture selection) recovery frames.
      * Improvements to rate control for temporal layers.
    * libwebm is updated to libwebm-1.0.0.29-9-g1930e3c

  - Bug Fixes
    * aomedia:3261 Assertion failed when encoding av1 with film grain and
      '--monochrome' flag
    * aomedia:3276 ensure all allocations are checked (partial fix)
    * aomedia:3451 The libaom library calls exit()
    * aomedia:3450 enable -Wshadow for C++ sources
    * aomedia:3449 Test Seg Faults After
      b459af3e345be402db052a143fcc5383d4b74cbd
    * aomedia:3416 prune unused symbols / restrict symbol visibility
    * aomedia:3443 Jenkins failure:
      UninstantiatedParameterizedTestSuite<EstimateNoiseTest>
    * aomedia:3434 realtime failures with CONFIG_BITSTREAM_DEBUG=1
    * aomedia:3433 DeltaqModeTest crash w/row_mt=0
    * aomedia:3429 Encoder crash when turn on both ExternalResize and
      g_threads > 2
    * aomedia:3438 Build failure with
      `-DSANITIZE=address -DBUILD_SHARED_LIBS=ON` when using clang.
    * aomedia:3435 Block artifacts when scrolling with AV1 in screen sharing
      scenarios
    * aomedia:3170 vmaf tune presets produce extreme glitches in one scene
    * aomedia:3401 Building shared libaom with MSVC results in a race condition
      with the export library
    * aomedia:3420 Floating point exception in av1_tpl_get_frame_importance()
    * aomedia:3424 heap-buffer-overflow in ScaleFilterCols_16_C() (SIGABRT)
    * aomedia:3417 examples/svc_encoder_rtc.c is using internal macros and
      functions
    * aomedia:3372 SEGV in assign_frame_buffer_p av1_common_int.h
    * aomedia:3130 'cpu-features.h' file not found on Android NDK 22
    * aomedia:3415 Encoder/decoder mismatch for svc_encoder_rtc running
      1 SL 3 TL
    * aomedia:3412 Lossless Mode Fails Loopback Bit Test
    * aomedia:3409 The use of AV1_VAR_OFFS in av1/encoder/var_based_part.c is
      incorrect for high bit depths
    * aomedia:3403 test_libaom fails with error message
      "feenableexcept() failed" on Linux arm
    * aomedia:3370 Random color block at fast motion area
    * aomedia:3393 Assertion failure in av1_convolve_2d_sr_c()
    * aomedia:3392 Strong artifacting for high bit-depth real-time
    * aomedia:3376 aomenc --threads=10 --deltaq-mode=3 crashes after
      "Allintra: multi-threading of calculating differential contrast"
    * aomedia:3380 Crashes and ASan and TSan errors in deltaq-mode=3
      multithreading code
    * chromium:1410766 heap-buffer-overflow in aom_yv12_copy_v_c
    * Cannot set level via AV1E_SET_TARGET_SEQ_LEVEL_IDX
    * Encoding failure due to the use of loop restoration with unintended use of
      lossless mode.
    * Signed integer overflow in scan_past_frames
    * Signed integer overflow in update_a_sep_sym
    * Flickering in AV1 1440p/2160p HDR transcodes
    * Fixed artifacts with screen share at encoder speed 10
    * Fixed prediction setup for IDTX

2023-05-08 v3.6.1
  This release includes several bug fixes. This release is ABI
  compatible with the last release. See
  https://aomedia.googlesource.com/aom/+log/v3.6.0..v3.6.1 for all the
  commits in this release.

  - Bug Fixes
    * aomedia:2871: Guard the support of the 7.x and 8.x levels for AV1
      under the CONFIG_CWG_C013 config flag, and only output the 7.x and
      8.x levels when explicitly requested.
    * aomedia:3382: Choose sb_size by ppi instead of svc.
    * aomedia:3384: Fix fullpel search limits.
    * aomedia:3388: Replace left shift of xq_active by multiplication.
    * aomedia:3389: Fix MV clamping in av1_mv_pred.
    * aomedia:3390: set_ld_layer_depth: cap max_layer_depth to
      MAX_ARF_LAYERS.
    * aomedia:3418: Fix MV clamping in av1_int_pro_motion_estimation.
    * aomedia:3429: Move lpf thread data init to lpf_pipeline_mt_init().
    * b:266719111: Fix undefined behavior in Arm Neon code.
    * b:269840681: nonrd_opt: align scan tables.
    * rtc: Fix is_key_frame setting in variance partition.
    * Build: Fix build with clang-cl and Visual Studio.
    * Build: Fix module definition file for MinGW/MSYS.

2023-02-03 v3.6.0
  This release includes compression efficiency and perceptual quality
  improvements, speedup and memory optimizations, and some new features.
  This release is ABI compatible with the last release.

  - New Features
    * New values 20-27 (corresponding to levels 7.0-7.3 and 8.0-8.3) for
      the encoder control AV1E_SET_TARGET_SEQ_LEVEL_IDX (note that the
      proposal to add the new levels are still in draft status). The
      original special value 24 (keep level stats only for level
      monitoring) is renumbered as 32.
    * New encoder control AV1E_SET_SKIP_POSTPROC_FILTERING to skip the
      application of post-processing filters on reconstructed frame in
      all intra mode.
    * New encoder option "kf-max-pyr-height": Maximum height of pyramid
      structure used for the GOP starting with a key frame (-1 to 5).
    * Make SVC work for screen content.
    * Rate control improvements to reduce frame-size spikes for screen
      content coding.
    * RISC-V architecture support with gcc toolchain.

  - Compression Efficiency Improvements
    * Peak compression efficiency in VOD setting is improved by 1%.
    * 0.7% - 2.2% RTC encoding BDrate gains for real time speed 8 to 10.
    * 15% RTC encoding BDrate gains for screen content speed 10.

  - Perceptual Quality Improvements
    * Resolved a visual quality issue that was reported for high
      resolution clips (2K) for speed 4 and above in VOD use case.
    * Visual quality improvements to screen content coding.
    * Quality improvements to temporal layer RTC coding.

  - Speedup and Memory Optimizations
    * RTC single-thread encoder speedup:
      o ~6% instruction count reduction for speed 5 and 6.
      o ~15% instruction count reduction for speed 7.
      o ~10% instruction count reduction for speed 8 to 10 (>=360p
        resolutions).
    * RTC multi-thread encoder speedup (beyond single-thread speedup):
      o 5-8% encode time reduction for speed 7 to 10.
    * RTC screen-content encoder speedup:
      o 11% instruction count reduction for speed 9 and 10 (>=720p
        resolutions).
    * ~5% reduction in heap memory requirements for RTC, speed 6 to 10.
    * AVIF:
      o 4-5% speedup for speed 9 in still-picture encoding mode.
      o 3-4% heap memory reduction in still-picture encoding mode for
        360p-720p resolutions with multiple threads.

  - Bug Fixes
    * Added a workaround for an AV1 specification bug which makes
      TRANSLATION type global motion models unusable.
    * Fixed AddressSanitizer global-buffer-overflow errors in
      av1/encoder/arm/neon/av1_fwd_txfm2d_neon.c.
    * Fixed AddressSanitizer heap-buffer-overflow error in
      av1_wiener_convolve_add_src_neon().
    * chromium:1393384 Avoid scene detection on spatial resize.
    * aomedia:3308 Remove color artifacts under high motion.
    * aomedia:3310 Avoid out of memory failures with Visual Studio 2017,
      2019, and 2022 for Win32 x86 builds.
    * aomedia:3346 Make SVC work properly for screen content.
    * aomedia:3348 Fix a bug where an uninitialized search_site is used.
    * aomedia:3365 Work around what seems like a Visual Studio 2022
      compiler optimization bug.
    * aomedia:3369 Incorrect PSNR values reported by libaom for 12-bit
      encode.