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Add codec module: per-frame encode/decode for screen grabs

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Documents codec identification (u16 per channel, set at stream open),
four initial candidates: MJPEG/libjpeg-turbo, QOI, ZSTD-raw, VA-API
H.264 intra. Screen grab source calls codec before transport; relay and
archive remain payload-agnostic.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
mikael-lovqvists-claude-agent
2026-03-25 22:45:18 +00:00
parent 5cea34caf5
commit 44a3326a76
2 changed files with 44 additions and 2 deletions
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planning.md
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@@ -52,8 +52,9 @@ Modules are listed in intended build order. Each depends only on modules above i
| 8 | `relay` | not started | Input dispatch to output queues (low-latency and completeness modes) |
| 9 | `ingest` | not started | MJPEG frame parser (two-pass EOI state machine, opaque stream → discrete frames) |
| 10 | `archive` | not started | Write frames to disk, control messages to binary log |
| 11 | `xorg` | not started | X11 screen geometry queries (XRandR), screen grab source, frame viewer sink — see architecture.md |
| 12 | `web node` | not started | Node.js/Express peer — speaks binary protocol on socket side, HTTP/WebSocket to browser; `protocol.mjs` mirrors C protocol module |
| 11 | `codec` | not started | Per-frame encode/decode — MJPEG (libjpeg-turbo), QOI, ZSTD-raw, VA-API H.264 intra; used by screen grab source and archive |
| 12 | `xorg` | not started | X11 screen geometry queries (XRandR), screen grab source (calls codec), frame viewer sink — see architecture.md |
| 13 | `web node` | not started | Node.js/Express peer — speaks binary protocol on socket side, HTTP/WebSocket to browser; `protocol.mjs` mirrors C protocol module |
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