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| Reporter | domingo | Assigned To | | |
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| Priority | normal | Severity | minor | Reproducibility | always |
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| Status | new | Resolution | open | |
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| Platform | Arch | OS | Linux | OS Version | (any) |
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| Product Version | 7.1 | |
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| Summary | 0009132: Jack Transport: LUA script for snapping region to playhead behaves bizarre |
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| Description | OS: Linux Manjaro Gnome 43
Ardour 7.1
A LUA script for Ardour 7.1 moves a region to the playhead (included on 'Additional Information'). It works fine when timecode is set to INT, but using JACK as timecode master produces a strange effect. After running the script the selected region will move a few frames after the playhead, instead of the playhead itself. ie., If the playhead is at 00:10:00:00, the region will fall on 00:10:00:02.
Jack Transport is interfaced by QJackCtl 0.9.8, JACK version 1.9.21.
I noticed the failure in sync with Blender, but it also occurs when Ardour is the only Jack client.
A related discussion of the issue here: https://discourse.ardour.org/t/snap-audio-region-to-playhead-ardour-7/107972/6
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| Additional Information | =====================
LUA Script
=====================
ardour {
["type"] = "EditorAction",
name = "Move Regions to Playhead",
license = "MIT",
author = "Ardour Team",
description = "Move selected regions to playhead position"
}
function factory () return function ()
local sel = Editor:get_selection () -- get current selection
local sel_regions = sel.regions:regionlist() -- get selected regions
local playhead = Session:transport_sample () -- get playhead position
-- prepare undo operation
Session:begin_reversible_command ("Move Regions to Playhead")
-- iterate over selected regions
for region in sel.regions:regionlist ():iter () do
-- prepare for undo operation
region:to_stateful ():clear_changes ()
-- move region to playhead position
region:set_position (Temporal.timepos_t (playhead))
-- collect undo/redo diff
Session:add_stateful_diff_command (region:to_statefuldestructible ())
end
-- all done, commit the combined Undo Operation (if any)
if not Session:abort_empty_reversible_command () then
Session:commit_reversible_command (nil)
end
end end |
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| Tags | jack, Lua, playhead, script, sync, timecode, transport |
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