_PandaDriver.pde

   1 import netP5.*;
   2 import oscP5.*;
   3
   4 /**
   5  *     DOUBLE BLACK DIAMOND        DOUBLE BLACK DIAMOND
   6  *
   7  *         //\\   //\\                 //\\   //\\
   8  *        ///\\\ ///\\\               ///\\\ ///\\\
   9  *        \\\/// \\\///               \\\/// \\\///
  10  *         \\//   \\//                 \\//   \\//
  11  *
  12  *        EXPERTS ONLY!!              EXPERTS ONLY!!
  13  *
  14  * This class implements the output function to the Panda Boards. It
  15  * will be moved into GLucose once stabilized.
  16  */
  17 public class PandaDriver {
  18
  19   // IP address
  20   public final String ip;
  21
  22   // Address to send to
  23   private final NetAddress address;
  24
  25   // Whether board output is enabled
  26   private boolean enabled = false;
  27
  28   // OSC message
  29   private final OscMessage message;
  30
  31   // List of point indices that get sent to this board
  32   private final int[] points;
  33
  34   // Packet data
  35   private final byte[] packet = new byte[4*352]; // magic number, our UDP packet size
  36
  37   private static final int NO_POINT = -1;
  38
  39   public PandaDriver(String ip) {
  40     this.ip = ip;
  41
  42     // Initialize our OSC output stuff
  43     address = new NetAddress(ip, 9001);
  44     message = new OscMessage("/shady/pointbuffer");
  45
  46     // Build the array of points, initialize all to nothing
  47     points = new int[PandaMapping.PIXELS_PER_BOARD];
  48     for (int i = 0; i < points.length; ++i) {
  49       points[i] = NO_POINT;
  50     }
  51   }
  52
  53   /**
  54    * These constant arrays indicate the order in which the strips of a cube
  55    * are wired. There are four different options, depending on which bottom
  56    * corner of the cube the data wire comes in.
  57    */
  58   private final int[][] CUBE_STRIP_ORDERINGS = new int[][] {
  59     {  2,  1,  0,  3, 13, 12, 15, 14,  4,  7,  6,  5, 11, 10,  9,  8 }, // FRONT_LEFT
  60     {  6,  5,  4,  7,  1,  0,  3,  2,  8, 11, 10,  9, 15, 14, 13, 12 }, // FRONT_RIGHT
  61     { 14, 13, 12, 15,  9,  8, 11, 10,  0,  3,  2,  1,  7,  6,  5,  4 }, // REAR_LEFT
  62     { 10,  9,  8, 11,  5,  4,  7,  6, 12, 15, 14, 13,  3,  2,  1,  0 }, // REAR_RIGHT
  63   };
  64
  65   public PandaDriver(String ip, Model model, PandaMapping pm) {
  66     this(ip);
  67
  68     // Ok, we are initialized, time to build the array if points in order to
  69     // send out. We start at the head of our point buffer, and work our way
  70     // down. This is the order in which points will be sent down the wire.
  71     int ci = -1;
  72
  73     // Iterate through all our channels
  74     for (ChannelMapping channel : pm.channelList) {
  75       ++ci;
  76       int pi = ci * ChannelMapping.PIXELS_PER_CHANNEL;
  77
  78       switch (channel.mode) {
  79
  80         case ChannelMapping.MODE_CUBES:
  81           // We have a list of cubes per channel
  82           for (int rawCubeIndex : channel.objectIndices) {
  83             if (rawCubeIndex < 0) {
  84               // No cube here, skip ahead in the buffer
  85               pi += Cube.POINTS_PER_CUBE;
  86             } else {
  87               // The cube exists, check which way it is wired to
  88               // figure out the order of strips.
  89               Cube cube = model.getCubeByRawIndex(rawCubeIndex);
  90               int stripOrderIndex = 0;
  91               switch (cube.wiring) {
  92                 case FRONT_LEFT: stripOrderIndex = 0; break;
  93                 case FRONT_RIGHT: stripOrderIndex = 1; break;
  94                 case REAR_LEFT: stripOrderIndex = 2; break;
  95                 case REAR_RIGHT: stripOrderIndex = 3; break;
  96               }
  97
  98               // Iterate through all the strips on the cube and add the points
  99               for (int stripIndex : CUBE_STRIP_ORDERINGS[stripOrderIndex]) {
 100                 // We go backwards here... in the model strips go clockwise, but
 101                 // the physical wires are run counter-clockwise
 102                 Strip s = cube.strips.get(stripIndex);
 103                 for (int j = s.points.size() - 1; j >= 0; --j) {
 104                   points[pi++] = s.points.get(j).index;
 105                 }
 106               }
 107             }
 108           }
 109           break;
 110
 111         case ChannelMapping.MODE_BASS:
 112           // TODO(mapping): figure out how we end up connecting the bass cabinet
 113           break;
 114
 115         case ChannelMapping.MODE_FLOOR:
 116           // TODO(mapping): figure out how these strips are wired
 117           break;
 118
 119         case ChannelMapping.MODE_SPEAKER:
 120           // TODO(mapping): figure out how these strips are wired
 121           break;
 122
 123         case ChannelMapping.MODE_NULL:
 124           // No problem, nothing on this channel!
 125           break;
 126
 127         default:
 128           throw new RuntimeException("Invalid/unhandled channel mapping mode: " + channel.mode);
 129       }
 130
 131     }
 132   }
 133
 134   public void toggle() {
 135     enabled = !enabled;
 136     println("PandaBoard/" + ip + ": " + (enabled ? "ON" : "OFF"));
 137   }
 138
 139   public final void send(int[] colors) {
 140     if (!enabled) {
 141       return;
 142     }
 143     int len = 0;
 144     int packetNum = 0;
 145     for (int index : points) {
 146       int c = (index < 0) ? 0 : colors[index];
 147       byte r = (byte) ((c >> 16) & 0xFF);
 148       byte g = (byte) ((c >> 8) & 0xFF);
 149       byte b = (byte) ((c) & 0xFF);
 150       packet[len++] = 0; // alpha channel, unused but makes for 4-byte alignment
 151       packet[len++] = r;
 152       packet[len++] = g;
 153       packet[len++] = b;
 154
 155       // Flush once packet is full buffer size
 156       if (len >= packet.length) {
 157         sendPacket(packetNum++);
 158         len = 0;
 159       }
 160     }
 161
 162     // Flush any remaining data
 163     if (len > 0) {
 164       sendPacket(packetNum++);
 165     }
 166   }
 167
 168   private void sendPacket(int packetNum) {
 169     message.clearArguments();
 170     message.add(packetNum);
 171     message.add(packet.length);
 172     message.add(packet);
 173     try {
 174       OscP5.flush(message, address);
 175     } catch (Exception x) {
 176       x.printStackTrace();
 177     }
 178   }
 179 }
 180