Vapor: add script to perform live rendering tests

share/scripts/_adm_render.lua

@@ -0,0 +1,38 @@
+ardour {
+	["type"]    = "EditorAction",
+	name        = "Setup ADM Render",
+	author      = "Ardour Team",
+	description = [[Set playback alignment to 512 samples to live render ADM]]
+}
+
+function factory () return function ()
+	-- ignore input systemic latency, no additional pre-roll
+	-- to fill buffers with input.
+	for r in Session:get_tracks():iter() do
+		r:input():disconnect_all (nil)
+	end
+
+	-- make surround-return announce additional latency to the next 512
+	-- cycle boundary (and delay the output accordingly).
+	Session:surround_master():surround_return():set_sync_and_align (true)
+
+	-- Mixbus: enforce latency pre-roll to be >= 1505 (latency of Atmos renderer)
+	-- this allows the Stem Export the Surround Bus.
+	-- (Mixbus tracks are aligned to master-out, not surrround out)
+	if Session:master_out().ch_post then
+		Session:master_out():ch_post ():to_latent():set_user_latency (1505)
+	end
+
+end end
+
+function icon (params) return function (ctx, width, height, fg)
+	local wh = math.min (width, height)
+	ctx:set_line_width (1.5)
+	ctx:set_source_rgba (ARDOUR.LuaAPI.color_to_rgba (fg))
+	ctx:arc (0.5 * width - wh * 0.3, 0.5 * height, wh * .275, -0.5 * math.pi , 0.5 * math.pi)
+	ctx:close_path ()
+	ctx:stroke ()
+	ctx:arc (0.5 * width + wh * 0.3, 0.5 * height, wh * .275, 0.5 * math.pi , 1.5 * math.pi)
+	ctx:close_path ()
+	ctx:stroke ()
+end end