Video4Zephyr: From Basic APIs Towards a Full-fledged Video Subsystem
summary
Video4Zephyr evolves the 2019 basic v4z ABI into a subsystem with concrete changes: adds device-tree port/endpoint refs to model circular camera links, a V4L2-inspired video control framework (controls, clusters, volatile reads, query tool), reworks buffer handling to indexed video_buffer + video_request_buffer so applications no longer must hold pointers, replaces fifo queues with IOQ to cut context switches, and adds M2M support with a transform_cap API plus a small media library “lipb” to auto-wire pipelines; many features are implemented and tested in samples, USB and multisensor work is ongoing.
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