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Isaac ConnorandClaude Opus 5
428c048bac
Reverts the previous commit's always-on measurement. Decoding audio for every monitor that has it spends CPU on a number almost nothing reads, which is the wrong trade even though it did solve the chicken and egg of picking a threshold without ever seeing a level. Measure when something is actually going to use the reading instead: - AudioDetection is on, as before, so nothing changes for a monitor that scores on audio; or - somebody asked. SharedData gains audio_level_until, a wall clock second the capture thread keeps measuring up to. The monitor editor's new level meter pushes it forward while it is on screen and the measurement lapses a few seconds after the page is left, so nothing has to send a stop and a crashed browser cannot leave a monitor decoding forever. When the reading stops being wanted the decoder is released and the published level and peak are cleared, so a stale number is not left looking current and an old peak does not land on the next frame row written. audio_level_until is carved out of analysis_pad rather than appended, so SharedData stays 888 bytes and no existing offset moves; the static_asserts, Memory.pm and Monitor.php are updated together and all three now agree the field is at +880. The meter itself is on the audio settings, shown whether or not AudioDetection is checked, because the level is what you need in order to choose a threshold. It draws the threshold currently in the input as a mark on the bar so a reading can be judged against it before saving, and a monitor whose zmc is not running reads "no reading" rather than a confident 0, which would be indistinguishable from silence. Frames.AudioLevel is therefore 0 again on monitors that do not score on audio. That is what the graph already treats as "no audio data", so it draws no line rather than a flat one. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01JpiSWBmtQkR5bcgpHWY4ME