dav1d 1.5.4 Brings AV1 Decoding To OS/2

dav1d 1.5.4, the open-source CPU-based AV1 decoder from VideoLAN, has been released with several notable updates. The release introduces OS/2 support via Meson build system and header file changes, adds Armv9.3-A Guarded Control Stack (GCS) support, and brings AArch64 and RISC-V optimizations. Additional improvements include better threading via scheduling tile tasks for all passes at once, precomputed quantization matrix tables, portability improvements for non-POSIX systems, and various hot-loop optimizations.

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