[Announcement] Cobalt 23 LTS Stable

[Catherine Chang]

Cobalt 23 LTS Stable

The Cobalt team is thrilled to announce the Stable Release of Cobalt 23 LTS! https://cobalt.googlesource.com/cobalt/+/refs/heads/23.lts.stable Evergreen binaries are available on GitHub (3.1.3) Cobalt 23 LTS includes Starboard API version 14 for porters and its release version will support all features that are required for 2023 YouTube Certification. The code is available at Cobalt open source "23.lts.stable” branch. (Read branching/versioning documents for more information). There are newly implemented features, improvements, and simplified code. We have outlined the changelist below with a brief description of Cobalt 23 LTS and Starboard 14 changes. More detailed information can be found in the respective CHANGELOG.md files (Cobalt, Starboard). Cobalt Changes (see cobalt/CHANGELOG.md for more information) New Features / Support Added support for HTTP caching, improving app startup times Compiled V8 JavaScript bytecode is also cached Added Identifier for Advertising (IFA) support Added experimental support for Web Workers Dedicated Workers and Service Workers web specifications are partially implemented Updates / Improvements Improved device health monitoring with Watchdog features for detecting application hangs Cobalt meta-build now uses GN ( Chrome Generate Ninja ) GYP is now deprecated [Guide] Migrating GYP to GN on cobalt.dev Evergreen supports LZ4 compressed binaries, saving up to 30% storage space Reproducible builds are now supported for production configurations Crash handler now launches on crash instead of on app start, saving 10MB in memory Deprecations GYP meta-build code is removed Updated to Python3. Python2 support is removed Starboard 11 support is removed. Starboard 12 and 13 are supported New Requirements C++17 toolchains are required Starboard Changes (starboard/CHANGELOG.md for more information) New Features / Support Added disk cache size constant kSbMaxSystemPathCacheDirectorySize constant sets cache directory max size (minimum 24MB) Added IFA advertising ID properties kSbSystemPropertyAdvertisingId and kSbSystemPropertyLimitAdTracking returned from SbSystemGetProperty call Updates / Improvements Added a “Projector” device type kSbSystemDeviceTypeVideoProjector as part of SbSystemDeviceType enumeration 10-bit YUV decode target format added  kSbDecodeTargetFormat3Plane10BitYUVI420Compact as part of SbDecodeTargetFormat enumeration Deprecations Media player API old interfaces are cleaned up SB_HAS_PLAYER_CREATION_AND_OUTPUT_MODE_QUERY_IMPROVEMENT and SB_HAS_MEDIA_IS_VIDEO_SUPPORTED_REFINEMENT are now always enabled, the define is removed Removed unused SystemPathTestOutputDirectory Documentation GN migration guide starboard/build/doc/migrating_gyp_to_gn.md starboard/build/doc/migration_changes.md starboard/build/doc/gn_migrate_stub_to_platform.md Docker setup guide cobalt/site/docs/development/setup-docker.md Improved microphone detection capability with new PlatformService(soft_mac_platform_service.h) Documentation available in SoftMicPlatformService (GitHub) Demo available in (soft_mic_platform_service_demo.html) 2023 YouTube Certification Remember to use "23.lts.stable" for the 2023 YouTube certification and for your product release. Contact Points Please contact our support channels if you have any problems, questions, or feedback. Thank you, On behalf of the Cobalt team