git.gag.com Git - fw/altos/blob - altoslib/AltosTelemetryFile.java

   1 /*
   2  * Copyright © 2013 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  16  */
  17
  18 package org.altusmetrum.altoslib_9;
  19
  20 import java.io.*;
  21 import java.util.*;
  22 import java.text.*;
  23
  24 class AltosTelemetryIterator implements Iterator<AltosState> {
  25         AltosState                      state;
  26         Iterator<AltosTelemetry>        telems;
  27         AltosTelemetry                  next;
  28         boolean                         seen;
  29
  30         public boolean hasNext() {
  31                 return !seen || telems.hasNext();
  32         }
  33
  34         public AltosState next() {
  35                 if (seen) {
  36                         AltosState      n = state.clone();
  37                         AltosTelemetry  t = telems.next();
  38
  39                         t.update_state(n);
  40                         state = n;
  41                 }
  42                 seen = true;
  43                 return state;
  44         }
  45
  46         public void remove () {
  47         }
  48
  49         public AltosTelemetryIterator(AltosState start, Iterator<AltosTelemetry> telems) {
  50                 this.state = start;
  51                 this.telems = telems;
  52                 this.seen = false;
  53         }
  54 }
  55
  56 public class AltosTelemetryFile extends AltosStateIterable {
  57
  58         AltosTelemetryIterable  telems;
  59         AltosState              start;
  60
  61         public void write_comments(PrintStream out) {
  62         }
  63
  64         public void write(PrintStream out) {
  65
  66         }
  67
  68         public AltosTelemetryFile(FileInputStream input) {
  69                 telems = new AltosTelemetryIterable(input);
  70                 start = new AltosState();
  71
  72                 /* Find boost tick */
  73                 AltosState      state = start.clone();
  74
  75                 for (AltosTelemetry telem : telems) {
  76                         telem.update_state(state);
  77                         state.finish_update();
  78                         if (state.state() != AltosLib.ao_flight_invalid && state.state() >= AltosLib.ao_flight_boost) {
  79                                 start.set_boost_tick(state.tick);
  80                                 break;
  81                         }
  82                 }
  83         }
  84
  85         public Iterator<AltosState> iterator() {
  86                 AltosState                      state = start.clone();
  87                 Iterator<AltosTelemetry>        i = telems.iterator();
  88
  89                 while (i.hasNext() && !state.valid()) {
  90                         AltosTelemetry  t = i.next();
  91                         t.update_state(state);
  92                         state.finish_update();
  93                 }
  94                 return new AltosTelemetryIterator(state, i);
  95         }
  96 }