scripts/_store_recall_mixer.lua

   1 ardour {
   2         ["type"] = "EditorAction",
   3         name = "Mixer Store",
   4         author = "Ardour Lua Taskforce",
   5         description = [[Stores the current Mixer state as a file that can be recalled arbitrarily. Supports: processor settings, gain, trim, pan and processor ordering.]]
   6 }
   7
   8 function factory() return function()
   9
  10         local path = ARDOUR.LuaAPI.build_filename(Session:path(), "export", "params.lua")
  11         function mark()
  12                 local file = io.open(path, "w")
  13                 file:write("") --empty current file from last run
  14                 file:close()
  15                 for r in Session:get_routes():iter() do
  16                         if r:is_monitor () or r:is_auditioner () then goto nextroute end -- skip special routes
  17
  18                         local order = ARDOUR.ProcessorList()
  19                         local x = 0
  20                         repeat
  21                                 local proc = r:nth_processor(x)
  22                                 if not proc:isnil() then
  23                                         order:push_back(proc)
  24                                 end
  25                                 x = x + 1
  26                         until proc:isnil()
  27
  28                         local route_str, proc_order_str, cache_str = "", "", ""
  29                         local rid = r:to_stateful():id():to_s()
  30                         local pan = r:pan_azimuth_control()
  31                         if pan:isnil() then pan = false else pan = pan:get_value() end --sometimes a route doesn't have pan, like the master.
  32
  33                         local on = 0
  34                         for p in order:iter() do
  35                                 local pid = p:to_stateful():id():to_s()
  36                                 proc_order_str = proc_order_str .. "[" .. on .. "] = " .. pid ..","
  37                                 cache_str = cache_str .. "[" .. pid .. "] = " .. "\"" .. p:display_name() .. "\"" ..","
  38                                 on = on + 1
  39                         end
  40
  41                         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 .. "}" .. "}"
  42                         file = io.open(path, "a")
  43                         file:write(route_str, "\r\n")
  44                         file:close()
  45
  46                         local i = 0
  47                         while true do
  48                                 local params = {}
  49                                 local proc_str, params_str = "", ""
  50                                 local proc = r:nth_plugin (i)
  51                                 if proc:isnil () then break end
  52                                 local active = proc:active()
  53                                 local id = proc:to_stateful():id():to_s()
  54                                 local plug = proc:to_insert ():plugin (0)
  55                                 local n = 0 -- count control-ports
  56                                 for j = 0, plug:parameter_count () - 1 do -- iterate over all plugin parameters
  57                                         if plug:parameter_is_control (j) then
  58                                                 local label = plug:parameter_label (j)
  59                                                 if plug:parameter_is_input (j) and label ~= "hidden" and label:sub (1,1) ~= "#" then
  60                                                         local _, _, pd = ARDOUR.LuaAPI.plugin_automation(proc, n)
  61                                                         local val = ARDOUR.LuaAPI.get_processor_param(proc, j, true)
  62                                                         if not(val == pd.normal) then
  63                                                                 params[n] = val
  64                                                         end
  65                                                 end
  66                                                 n = n + 1
  67                                         end
  68                                 end
  69                                 i = i + 1
  70                                 for k, v in pairs(params) do
  71                                         params_str = params_str .. "[".. k .."] = " .. v .. ","
  72                                 end
  73                                 proc_str = "instance = {plugin_id = " .. id .. ", parameters = {" .. params_str .. "}, active = " .. tostring(active) .. "}"
  74                                 file = io.open(path, "a")
  75                                 file:write(proc_str, "\r\n")
  76                                 file:close()
  77                         end
  78                         ::nextroute::
  79                 end
  80         end
  81         local invalidate = {}
  82         function recall()
  83                 local file = io.open(path, "r")
  84                 assert(file, "File not found!")
  85                 for l in file:lines() do
  86                         --print(l)
  87
  88                         local plugin, route = false, false
  89                         local f = load(l)
  90                         f ()
  91
  92                         if instance["route_id"]  ~= nil then route = true end
  93                         if instance["plugin_id"] ~= nil then plugin = true end
  94
  95                         function new_plugin(name)
  96                                 local plugin = nil
  97                                 for x = 0, 6 do
  98                                         plugin = ARDOUR.LuaAPI.new_plugin(Session, name, x, "")
  99                                         if not(plugin:isnil()) then break end
 100                                 end return plugin
 101                         end
 102
 103                         if route then
 104                                 local old_order = ARDOUR.ProcessorList()
 105                                 local rid = PBD.ID(instance["route_id"])
 106                                 local rt = Session:route_by_id(rid)
 107                                 if rt:isnil() then goto nextline end
 108                                 local gc, tc, pc = instance["gain_control"], instance["trim_control"], instance["pan_control"]
 109                                 for k, v in pairs(instance["order"]) do
 110                                         local proc = Session:processor_by_id(PBD.ID(v))
 111                                         if proc:isnil() then
 112                                                 for id, name in pairs(instance["cache"]) do
 113                                                         if v == id then
 114                                                                 proc = new_plugin(name)
 115                                                                 invalidate[v] = proc:to_stateful():id():to_s()
 116                                                         end
 117                                                 end
 118                                         end
 119                                         if not(proc:isnil()) then old_order:push_back(proc) end
 120                                 end
 121                                 rt:gain_control():set_value(gc, 1)
 122                                 rt:trim_control():set_value(tc, 1)
 123                                 if pc ~= false then rt:pan_azimuth_control():set_value(pc, 1) end
 124                                 rt:reorder_processors(old_order, nil)
 125                         end
 126
 127                         if plugin then
 128                                 for k, v in pairs(invalidate) do --invalidate deleted plugin id's
 129                                         if instance["plugin_id"] == k then
 130                                                 instance["plugin_id"] = v
 131                                         end
 132                                 end
 133                                 local act = instance["active"]
 134                                 local id = PBD.ID(instance["plugin_id"])
 135                                 local proc = Session:processor_by_id(id)
 136                                 if proc:isnil() then goto nextline end
 137                                 for k, v in pairs(instance["parameters"]) do
 138                                         ARDOUR.LuaAPI.set_processor_param(proc, k, v)
 139                                 end
 140                                 if act then proc:activate() else proc:deactivate() end
 141                         end
 142                         ::nextline::
 143                 end
 144         end
 145
 146         local dialog_options = {
 147                 { type = "label", colspan= 10, title = "" },
 148                 { type = "radio",  colspan= 10, key = "select", title = "", values ={ ["1. Mark"] = "mark", ["2. Recall"] = "recall" }, default = "1. Mark"},
 149                 { type = "label", colspan= 10, title = "" },
 150         }
 151
 152         local rv = LuaDialog.Dialog("Mixer Store:", dialog_options):run()
 153         assert(rv, 'Dialog box was canceled or is ' .. type(rv))
 154         local c = rv["select"]
 155         if c == "mark" then mark() end
 156         if c == "recall" then recall() end
 157
 158 end end