_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 static 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   private final static int FORWARD = -1;
  54   private final static int BACKWARD = -2;
  55
  56   /**
  57    * These constant arrays indicate the order in which the strips of a cube
  58    * are wired. There are four different options, depending on which bottom
  59    * corner of the cube the data wire comes in.
  60    */
  61   private final static int[][] CUBE_STRIP_ORDERINGS = new int[][] {
  62     {  2,  1,  0,  3, 13, 12, 15, 14,  4,  7,  6,  5, 11, 10,  9,  8 }, // FRONT_LEFT
  63     {  6,  5,  4,  7,  1,  0,  3,  2,  8, 11, 10,  9, 15, 14, 13, 12 }, // FRONT_RIGHT
  64     { 14, 13, 12, 15,  9,  8, 11, 10,  0,  3,  2,  1,  7,  6,  5,  4 }, // REAR_LEFT
  65     { 10,  9,  8, 11,  5,  4,  7,  6, 12, 15, 14, 13,  3,  2,  1,  0 }, // REAR_RIGHT
  66   };
  67
  68   private final static int[][] BASS_STRIP_ORDERING = {
  69     {0, FORWARD },
  70     {1, FORWARD },
  71     {2, FORWARD },
  72     {3, FORWARD },
  73     {4, FORWARD },
  74     {5, FORWARD },
  75     {6, FORWARD },
  76     {7, FORWARD },
  77     {8, FORWARD },
  78     {9, FORWARD },
  79     {10, FORWARD },
  80     {11, FORWARD },
  81     {12, FORWARD },
  82     {13, FORWARD },
  83     {14, FORWARD },
  84     {15, FORWARD },
  85     {16, FORWARD },
  86     {17, FORWARD },
  87     {18, FORWARD },
  88     {19, FORWARD },
  89     {20, FORWARD },
  90     {21, FORWARD },
  91     {22, FORWARD },
  92   };
  93
  94   private final static int[][] FLOOR_STRIP_ORDERING = {
  95     {0, FORWARD},
  96     {1, FORWARD},
  97     {2, FORWARD},
  98     {3, FORWARD},
  99   };
 100
 101   private final static int[][] SPEAKER_STRIP_ORDERING = {
 102     {0, FORWARD },
 103     {1, FORWARD },
 104     {2, FORWARD },
 105     {3, FORWARD },
 106     {4, FORWARD },
 107     {5, FORWARD },
 108     {6, FORWARD },
 109     {7, FORWARD },
 110     {8, FORWARD },
 111     {9, FORWARD },
 112     {10, FORWARD },
 113     {11, FORWARD },
 114     {12, FORWARD },
 115     {13, FORWARD },
 116     {14, FORWARD },
 117     {15, FORWARD },
 118   };
 119
 120   public PandaDriver(String ip, Model model, PandaMapping pm) {
 121     this(ip);
 122
 123     // Ok, we are initialized, time to build the array if points in order to
 124     // send out. We start at the head of our point buffer, and work our way
 125     // down. This is the order in which points will be sent down the wire.
 126     int ci = -1;
 127
 128     // Iterate through all our channels
 129     for (ChannelMapping channel : pm.channelList) {
 130       ++ci;
 131       int pi = ci * ChannelMapping.PIXELS_PER_CHANNEL;
 132
 133       switch (channel.mode) {
 134
 135         case ChannelMapping.MODE_CUBES:
 136           // We have a list of cubes per channel
 137           for (int rawCubeIndex : channel.objectIndices) {
 138             if (rawCubeIndex < 0) {
 139               // No cube here, skip ahead in the buffer
 140               pi += Cube.POINTS_PER_CUBE;
 141             } else {
 142               // The cube exists, check which way it is wired to
 143               // figure out the order of strips.
 144               Cube cube = model.getCubeByRawIndex(rawCubeIndex);
 145               int stripOrderIndex = 0;
 146               switch (cube.wiring) {
 147                 case FRONT_LEFT: stripOrderIndex = 0; break;
 148                 case FRONT_RIGHT: stripOrderIndex = 1; break;
 149                 case REAR_LEFT: stripOrderIndex = 2; break;
 150                 case REAR_RIGHT: stripOrderIndex = 3; break;
 151               }
 152
 153               // Iterate through all the strips on the cube and add the points
 154               for (int stripIndex : CUBE_STRIP_ORDERINGS[stripOrderIndex]) {
 155                 // We go backwards here... in the model strips go clockwise, but
 156                 // the physical wires are run counter-clockwise
 157                 pi = mapStrip(cube.strips.get(stripIndex), BACKWARD, points, pi);
 158               }
 159             }
 160           }
 161           break;
 162
 163         case ChannelMapping.MODE_BASS:
 164           for (int[] config : BASS_STRIP_ORDERING) {
 165             pi = mapStrip(model.bassBox.strips.get(config[0]), config[1], points, pi);
 166           }
 167           break;
 168
 169         case ChannelMapping.MODE_FLOOR:
 170           for (int[] config : FLOOR_STRIP_ORDERING) {
 171             pi = mapStrip(model.boothFloor.strips.get(config[0]), config[1], points, pi);
 172           }
 173           break;
 174
 175         case ChannelMapping.MODE_SPEAKER:
 176           for (int[] config : SPEAKER_STRIP_ORDERING) {
 177             Speaker speaker = model.speakers.get(channel.objectIndices[0]);
 178             pi = mapStrip(speaker.strips.get(config[0]), config[1], points, pi);
 179           }
 180           break;
 181
 182         case ChannelMapping.MODE_NULL:
 183           // No problem, nothing on this channel!
 184           break;
 185
 186         default:
 187           throw new RuntimeException("Invalid/unhandled channel mapping mode: " + channel.mode);
 188       }
 189
 190     }
 191   }
 192
 193   private int mapStrip(Strip s, int direction, int[] points, int pi) {
 194     if (direction == FORWARD) {
 195       for (Point p : s.points) {
 196         points[pi++] = p.index;
 197       }
 198     } else if (direction == BACKWARD) {
 199       for (int i = s.points.size()-1; i >= 0; --i) {
 200         points[pi++] = s.points.get(i).index;
 201       }
 202     } else {
 203       throw new RuntimeException("Unidentified strip mapping direction: " + direction);
 204     }
 205     return pi;
 206   }
 207
 208   public void toggle() {
 209     enabled = !enabled;
 210     println("PandaBoard/" + ip + ": " + (enabled ? "ON" : "OFF"));
 211   }
 212
 213   public final void send(int[] colors) {
 214     if (!enabled) {
 215       return;
 216     }
 217     int len = 0;
 218     int packetNum = 0;
 219     for (int index : points) {
 220       int c = (index < 0) ? 0 : colors[index];
 221       byte r = (byte) ((c >> 16) & 0xFF);
 222       byte g = (byte) ((c >> 8) & 0xFF);
 223       byte b = (byte) ((c) & 0xFF);
 224       packet[len++] = 0; // alpha channel, unused but makes for 4-byte alignment
 225       packet[len++] = r;
 226       packet[len++] = g;
 227       packet[len++] = b;
 228
 229       // Flush once packet is full buffer size
 230       if (len >= packet.length) {
 231         sendPacket(packetNum++);
 232         len = 0;
 233       }
 234     }
 235
 236     // Flush any remaining data
 237     if (len > 0) {
 238       sendPacket(packetNum++);
 239     }
 240   }
 241
 242   private void sendPacket(int packetNum) {
 243     message.clearArguments();
 244     message.add(packetNum);
 245     message.add(packet.length);
 246     message.add(packet);
 247     try {
 248       OscP5.flush(message, address);
 249     } catch (Exception x) {
 250       x.printStackTrace();
 251     }
 252   }
 253 }
 254