Playing a single bar still triggered notes placed exactly on the next bar
line. Two delays stack: the daemon polls at roughly frame rate, so it can
notice up to ~33ms late, and REAPER renders audio ahead of the play position
it reports, so the note has already reached the instrument before the stop
lands.
Stopping 60ms early clears both. The cost is a few milliseconds off the tail
of the bar, which is inaudible, and the benefit is that the downbeat you were
trying to exclude stays excluded. Tunable via the stoplead ExtState for setups
with large audio buffers.
Ctrl+Alt+Space plays the cursor's bar and stops at the next bar line, so the
same bar can be fired repeatedly while nudging a note without reaching for
stop. Alt+Space keeps its play-onwards behaviour.
The stop is performed by the preview daemon rather than the action script: a
script that stayed alive waiting for the bar to end would bring back REAPER's
"already running" prompt on the next press, which is the problem the daemon
exists to avoid. Stopping transport can move the edit cursor depending on
preferences, and the edit cursor is the grid cursor, so the daemon restores it.
A short arming window covers the gap between requesting playback and the
transport reporting as playing, so the pending stop is not cancelled instantly.
Keyboard- and speech-driven step entry for the MIDI editor, built for use
with OSARA. Arrows walk grid cells and scale degrees, Enter toggles notes,
and every position is spoken and auditioned.
Uses REAPER's own edit cursor and active_note_row rather than private cursor
state, so grid mode and OSARA editing stay in sync. Grid size comes from
MIDI_GetGrid(), so existing grid keybindings drive it. When grid mode is off,
every bound key forwards to its previous action.
Preview timing lives in a background daemon so the action scripts can exit
immediately -- a script still alive on the next keypress triggers REAPER's
"already running" prompt and breaks key repeat.
Talon