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vitaImmich/goals.md
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SadsandClaude Haiku 4.5 87721390fb Scalable assets, zoom/pan, monthly grouping, and scroll stability
- Dynamic arrays for assets (remove 1000/500 caps)
- Zoom (R/L triggers) and pan (analog stick) in detail view
- Group gallery by month/year with headers
- Fix fast-scroll crashes via texture pooling and thread safety
- Serialize curl calls (OpenSSL 1.0.2 lacks thread support)

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
2026-06-12 20:27:51 +02:00

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vitaImmich — Goals

Task list for the current round of work. Checked items are done.

1. Make asset/local storage scalable (remove 1000 / 500 caps)

  • Replace fixed MAX_ASSETS (1000) server-asset arrays with dynamically grown (realloc, doubling) arrays.
  • Replace fixed MAX_LOCAL (500) local-media arrays with dynamically grown arrays (grown during the startup scan, fixed afterward).
  • Replace the fixed g_disp[DISP_MAX] merged-timeline array with a grown array.
  • Decouple the thumbnail worker thread from the growable arrays (pass the request id/path through dedicated buffers) so a realloc on the main thread can never dangle a pointer the worker is reading.

2. Zoom and pan in the image viewer

  • Enable analog-stick sampling.
  • R trigger zoom in / L trigger zoom out in the detail view.
  • Left stick pans when zoomed in; pan is clamped to the image bounds.
  • Zoom/pan reset when moving to another photo; browsing left/right is disabled while zoomed.
  • Compute a grid layout with section headers inserted whenever the month/year of the (date-sorted) timeline changes.
  • Draw "Month YYYY" headers; render items under the right header.
  • Scroll, selection-follow, visible-range and thumb eviction all use the computed per-item positions.

4. Show more relevant info in the SELECT (sync) menu

  • Photo vs video breakdown for server + local.
  • Total local media size, backed-up size and percentage.
  • Details for the currently selected item (name, date, size, state).

5. Fix the fast-scroll crash (pre-existing, reproduced in Vita3K)

  • Root cause: freeing a thumbnail texture unmaps its memblock while the GPU side (Vita3K's texture cache re-reads guest memory of cached textures) may still touch it — random-looking crashes deep in OpenSSL / libjpeg / strlen whenever eviction ran during a scroll. Fixed by recycling thumbnails through a texture pool (tex_acquire/tex_release) instead of ever freeing them mid-run.
  • Pace the main loop with sceDisplayWaitVblankStart() — without it the loop free-runs in the emulator, racing the held d-pad into a page-fetch storm (30+ requests/second against the server).
  • Suspend thumbnail loads/eviction and page fetches while the selection is still moving (scrolling_fast settle counter).
  • Serialize all curl_easy_perform calls behind one mutex — vitasdk's OpenSSL 1.0.2 is built without thread support, so concurrent TLS from the main/worker/sync threads is unsafe (also installed OpenSSL locking callbacks for defense in depth).
  • Pre-grow the newlib heap (96 MB, trim disabled) at boot so heap memblock mapping never happens while multiple threads run.
  • Verified: repeated 10–12 s held-scroll cycles to photo 1780+ across multiple pages, zero GPU faults / zero crashes (previous builds died within ~10 s).