diff options
Diffstat (limited to 'share/scripts/tx_raw_midi_from_file.lua')
| -rw-r--r-- | share/scripts/tx_raw_midi_from_file.lua | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/share/scripts/tx_raw_midi_from_file.lua b/share/scripts/tx_raw_midi_from_file.lua new file mode 100644 index 0000000000..303767a656 --- /dev/null +++ b/share/scripts/tx_raw_midi_from_file.lua @@ -0,0 +1,134 @@ +ardour { + ["type"] = "EditorAction", + name = "Send Raw MIDI from File", + license = "MIT", + author = "Ardour Team", + description = [[Read raw binary midi (.syx) from a file and send it to a MIDI port]] +} + +function factory () return function () + + function portlist () + local rv = {} + local a = Session:engine() + local _, t = a:get_ports (ARDOUR.DataType("midi"), ARDOUR.PortList()) + for p in t[2]:iter() do + local amp = p:to_asyncmidiport () + if amp:isnil() or not amp:sends_output() then goto continue end + rv[amp:name()] = amp + print (amp:name(), amp:sends_output()) + ::continue:: + end + return rv + end + + local dialog_options = { + { type = "file", key = "file", title = "Select .syx MIDI file" }, + { type = "dropdown", key = "port", title = "Target Port", values = portlist () } + } + + local rv = LuaDialog.Dialog ("Select Taget", dialog_options):run () + dialog_options = nil -- drop references (ports, shared ptr) + collectgarbage () -- and release the references immediately + + if not rv then return end -- user cancelled + + local f = io.open (rv["file"], "rb") + + if not f then + LuaDialog.Message ("Raw MIDI Tx", "File Not Found", LuaDialog.MessageType.Error, LuaDialog.ButtonType.Close):run () + goto out + end + + local size + do -- scope for 'local' + size = f:seek("end") -- determine file size + f:seek("set", 0) + + if size > 1048576 then + local ok = LuaDialog.Message ("Raw MIDI Tx", + string.format ("File is larger than 1MB.\nFile-size = %.1f kB\n\nContinue?", size / 1024), + LuaDialog.MessageType.Question, LuaDialog.ButtonType.Yes_No):run () + if ok ~= LuaDialog.Response.Yes then + f:close () + goto out + end + end + end + + do -- scope for 'local' + local midi_byte_count = 0 + local total_read = 0 + local message_count = 0 + local long_message = false + + -- prepare progress dialog + local pdialog = LuaDialog.ProgressWindow ("Tx MIDI", true) + pdialog:progress (0, "Transmitting"); + + local async_midi_port = rv["port"] -- reference to port + local parser = ARDOUR.RawMidiParser () -- construct a MIDI parser + + while true do + if pdialog:canceled () then break end + -- read file in 64byte chunks + local bytes = f:read (64) + if not bytes then break end + total_read = total_read + #bytes + + -- parse MIDI data byte-by-byte + for i = 1, #bytes do + if parser:process_byte (bytes:byte (i)) then + if parser:buffer_size () > 255 then + long_message = true + print ("WARNING -- single large message > 255, bytes: ", parser:buffer_size ()) + end + -- parsed complete normalized MIDI message, send it + async_midi_port:write (parser:midi_buffer (), parser:buffer_size (), 0) + + -- Physical MIDI is sent at 31.25kBaud. + -- Every message is sent as 10bit message on the wire, + -- so every MIDI byte needs 320usec. + ARDOUR.LuaAPI.usleep (400 * parser:buffer_size ()) + + -- count msgs and valid bytes sent + midi_byte_count = midi_byte_count + parser:buffer_size () + message_count = message_count + 1 + if 0 == message_count % 10 then + pdialog:progress (total_read / size, string.format ("Transmitting %.1f kB", midi_byte_count / 1024)) + end + if pdialog:canceled () then break end + end + end + end + + f:close () + -- hide modal progress dialog and destroy it + pdialog:done (); + print ("Sent", message_count, "messages, bytes: ", midi_byte_count, " read:", total_read, "/", size) + + if long_message then + LuaDialog.Message ("Raw MIDI Tx", "Dataset contained messages longer than 127 bytes. Which may or may not have been transmitted successfully.", LuaDialog.MessageType.Warning, LuaDialog.ButtonType.Close):run () + end + end + + ::out:: +end end + +function icon (params) return function (ctx, width, height, fg) + ctx:set_source_rgba (ARDOUR.LuaAPI.color_to_rgba (fg)) + local txt = Cairo.PangoLayout (ctx, "ArdourMono ".. math.ceil(math.min (width, height) * .45) .. "px") + txt:set_text ("S") + ctx:move_to (1, 1) + txt:show_in_cairo_context (ctx) + + txt:set_text ("Y") + local tw, th = txt:get_pixel_size () + ctx:move_to (.5 * (width - tw), .5 * (height - th)) + txt:show_in_cairo_context (ctx) + + txt:set_text ("X") + tw, th = txt:get_pixel_size () + ctx:move_to ((width - tw - 1), (height - th -1)) + txt:show_in_cairo_context (ctx) +end end |