The C++ SharedData struct is naturally aligned, not packed, so the
compiler inserts a 4-byte pad before capture_fps (after state) and
another before the startup_time union (after audio_channels). Monitor.php
used the naive packed offsets, so every field from capture_fps onward
(capture_fps/analysis_fps, latitude/longitude, the time fields,
alarm_cause and all of TriggerData) was read from an address 4-8 bytes
too low, yielding garbage.
Correct the offsets to the real aligned layout (SharedData is 872 bytes,
TriggerData starts at 872), matching what ZoneMinder::Memory computes and
what the C++ writes. No struct change; this is a reader-side fix.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
(cherry picked from commit e2ed9287d7)
c75178dd26