Added recorder to be able to stream the current LED data via network. That way you can create nice looking GIF images of the effects - and even develop effects without having to look at the actual LED panel.

src/tools/recorder.rb

@@ -0,0 +1,93 @@
+#!/usr/bin/env ruby
+require 'socket'
+require 'pp'
+require 'rmagick'
+
+include Magick
+
+IP = ARGV[0]
+PORT = 2122
+FILE = ARGV[1] or raise "No filename given"
+EFFECT = ARGV[2]
+FRAMES = 250
+FACTOR = 1
+delay = 50
+
+puts "Connecting to #{IP}:#{PORT}..."
+
+s = TCPSocket.new(IP, PORT)
+
+puts "Connected."
+init = s.recv(3).unpack("C*")
+
+raise "Initial data packet wasn't usable!" if init[2] != 0xFF
+puts "Got initial data packet."
+
+dim_x, dim_y = *init
+len = dim_x * dim_y * 3 + 3
+
+puts "Size: #{dim_x}x#{dim_y}. Expecting packet length #{len}."
+
+puts "Opening local UDP socket..."
+udp = UDPSocket.new
+udp.bind("10.10.2.1", 13330)
+puts "Waiting for UDP packets on port 13330..."
+s.sendmsg("P\x12\x34\x00")
+s.sendmsg("E#{EFFECT}\x00") if EFFECT
+
+gif = ImageList.new
+last_id = 255
+last_frame_time = nil
+img = nil
+last_diff = nil
+
+while gif.length < FRAMES do
+	data = udp.recvfrom(1024)[0].unpack("C*")
+	if delay > 0
+		delay -= 1
+		next
+	end
+	#puts "Packet. ID: #{data[0]}, length: #{data.length}"
+	raise "Unexpected packet length" unless data.count == len
+	raise "Invalid data packet" unless data[len - 1]==0xFF
+	
+	id = data.shift << 8 | data.shift
+	if last_id != id-1 && last_id != id-2
+		puts
+		gif = ImageList.new
+	end
+	last_id = id
+	
+	if img && last_frame_time
+		last_diff = diff = Time.now.to_f * 100 - last_frame_time.to_f * 100
+		img.delay = diff
+	end
+	
+	last_frame_time = Time.now
+	
+	img = Image.new(dim_x, dim_y)
+	img.delay = 5
+	gc = Draw.new
+	
+	#next
+	print "."
+	print "#{gif.length}" if gif.length%50==0
+	(0...dim_y).each do |y|
+		(0...dim_x).each do |x|
+			r, g, b = *data.shift(3)
+			gc.fill("rgb(#{r}, #{g}, #{b})")
+			gc.point(x, y)
+			#img.pixel_color(x, y, Pixel.new(r, g, b, 255))
+		end
+	end
+	gc.draw(img)
+	img.sample!(FACTOR)
+	gif << img
+end
+img.delay = last_diff
+s.close
+puts
+puts "Generating gif..."
+gif.write(FILE)
+puts
+puts