contrib: aom: update to 3.10.0

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. The definitions of the internal macros AOM_INLINE and AOM_FORCE_INLINE have been removed from the public header aom/aom_integer.h.

• New Features
  • New codec controls:
    • AV1E_SET_AUTO_TILES
    • AV1E_GET_HIGH_MOTION_CONTENT_SCREEN_RTC
    • AV1E_SET_POSTENCODE_DROP_RTC: Post encode frame drop feature.
    • AV1E_SET_MAX_CONSEC_FRAME_DROP_MS_CBR
  • New key-value pair for aom_codec_set_option():
    • "auto-tiles": equivalent to the new codec control AV1E_SET_AUTO_TILES.
• Deprecated Features
  • Deprecated codec control:
    • AV1E_SET_MAX_CONSEC_FRAME_DROP_CBR: Use the new codec control AV1E_SET_MAX_CONSEC_FRAME_DROP_MS_CBR instead.
  • The sframe_mode field in the aom_codec_enc_cfg_t struct is not implemented.
• Compression Efficiency Improvements
  • BD-rate gain of 0.7 - 1.3% (by enabling global motion tool) for speed 5 and speed 6 with ~5% encode time increase.
  • RTC speed 11 video: ~3-5% BD-rate gain for VGA and QVGA.
• Perceptual Quality Improvements
  • RTC quality improvements for slide changes and scrolling content.
• Speedup and Memory Optimizations
  • RTC screen content speedups:
    • ~2x speedup for high motion content for speed 11.
    • ~2x speedup on key frame coding for speed >= 10.
  • Arm: Significant uplifts in speed in this release (vs v3.9.1) have come from tuning the various convolutions according to filter size (doing 8-tap when only 2-tap is required is inefficient) and also deploying Armv8.6 USMMLA instructions in 6-tap and 12-tap standard bitdepth convolutions.
    • Standard bitdepth RTC:
      • speed 5: +5%
      • speed 6: +4%
      • speed 7: +5%
      • speed 8: +4%
      • speed 9: +6%
      • speed 10: +6%
    • Standard bitdepth VoD:
      • speed 0: +9%
      • speed 1: +12%
      • speed 2: +9%
      • speed 3: +3%
      • speed 4: +3%
      • speed 5: -9% (expected due to global motion changes)
      • speed 6: -3% (expected due to global motion changes)
    • High bitdepth VoD:
      • speed 0: +4%
      • speed 1: +19%
      • speed 2: +23%
      • speed 3: +1%
      • speed 4: +1%
      • speed 5: -8% (expected due to global motion changes)
      • speed 6: -3% (expected due to global motion changes)
    • Standard bitdepth 2x1 horizontal super-resolution/scaling encoding: +101%
• Other Improvements
  • Reduce bit rate overshoot on slide content.
• Bug Fixes
  • rtc: Bug fix for active_maps with sb_size=128.
  • b:343429036: rtc: Fix source_sad setting near boundary.
  • Fix to QP for temporal enhancement after key frame.
  • b:343429192: rtc: Condition QP adjustment on rc->q_1/2_frame > 0.

See: https://aomedia.googlesource.com/aom/+/refs/tags/v3.10.0/CHANGELOG