add support to reinstantiate deleted plugins

diff --git a/scripts/_store_recall_mixer.lua b/scripts/_store_recall_mixer.lua
index d958951a9e6b6dcac3af2ce6a448d9f776f83702..fab52df352b0416b97e51aac32683b2e62b3d646 100644 (file)
--- a/scripts/_store_recall_mixer.lua
+++ b/scripts/_store_recall_mixer.lua
@@ -25,7 +25,7 @@ function factory() return function()
                                x = x + 1
                        until proc:isnil()
 
-                       local route_str, proc_order_str = "", ""
+                       local route_str, proc_order_str, cache_str = "", "", ""
                        local rid = r:to_stateful():id():to_s()
                        local pan = r:pan_azimuth_control()
                        if pan:isnil() then pan = false else pan = pan:get_value() end --sometimes a route doesn't have pan, like the master.
@@ -34,10 +34,11 @@ function factory() return function()
                        for p in order:iter() do
                                local pid = p:to_stateful():id():to_s()
                                proc_order_str = proc_order_str .. "[" .. on .. "] = " .. pid ..","
+                               cache_str = cache_str .. "[" .. pid .. "] = " .. "\"" .. p:display_name() .. "\"" ..","
                                on = on + 1
                        end
 
-                       route_str = "instance = {route_id = " .. rid .. ", gain_control = " .. r:gain_control():get_value() .. ", trim_control = " .. r:trim_control():get_value() .. ", pan_control = " .. tostring(pan) .. ", order = {" .. proc_order_str .."}" .. "}"
+                       route_str = "instance = {route_id = " .. rid .. ", gain_control = " .. r:gain_control():get_value() .. ", trim_control = " .. r:trim_control():get_value() .. ", pan_control = " .. tostring(pan) .. ", order = {" .. proc_order_str .."}, cache = {" .. cache_str .. "}" .. "}"
                        file = io.open(path, "a")
                        file:write(route_str, "\r\n")
                        file:close()
@@ -77,11 +78,12 @@ function factory() return function()
                        ::nextroute::
                end
        end
-
+       local invalidate = {}
        function recall()
                local file = io.open(path, "r")
                assert(file, "File not found!")
                for l in file:lines() do
+                       --print(l)
 
                        local plugin, route = false, false
                        local f = load(l)
@@ -90,16 +92,32 @@ function factory() return function()
                        if instance["route_id"]  ~= nil then route = true end
                        if instance["plugin_id"] ~= nil then plugin = true end
 
+                       function new_plugin(name)
+                               local plugin = nil
+                               for x = 0, 6 do
+                                       plugin = ARDOUR.LuaAPI.new_plugin(Session, name, x, "")
+                                       if not(plugin:isnil()) then break end
+                               end return plugin
+                       end
+
                        if route then
                                local old_order = ARDOUR.ProcessorList()
-                               for k, v in pairs(instance["order"]) do
-                                       local proc = Session:processor_by_id(PBD.ID(v))
-                                       if not(proc:isnil()) then old_order:push_back(proc) end
-                               end
                                local rid = PBD.ID(instance["route_id"])
                                local rt = Session:route_by_id(rid)
                                if rt:isnil() then goto nextline end
                                local gc, tc, pc = instance["gain_control"], instance["trim_control"], instance["pan_control"]
+                               for k, v in pairs(instance["order"]) do
+                                       local proc = Session:processor_by_id(PBD.ID(v))
+                                       if proc:isnil() then
+                                               for id, name in pairs(instance["cache"]) do
+                                                       if v == id then
+                                                               proc = new_plugin(name)
+                                                               invalidate[v] = proc:to_stateful():id():to_s()
+                                                       end
+                                               end
+                                       end
+                                       if not(proc:isnil()) then old_order:push_back(proc) end
+                               end
                                rt:gain_control():set_value(gc, 1)
                                rt:trim_control():set_value(tc, 1)
                                if pc ~= false then rt:pan_azimuth_control():set_value(pc, 1) end
@@ -107,6 +125,11 @@ function factory() return function()
                        end
 
                        if plugin then
+                               for k, v in pairs(invalidate) do --invalidate deleted plugin id's
+                                       if instance["plugin_id"] == k then
+                                               instance["plugin_id"] = v
+                                       end
+                               end
                                local act = instance["active"]
                                local id = PBD.ID(instance["plugin_id"])
                                local proc = Session:processor_by_id(id)