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; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  17  */
  18
  19 package org.altusmetrum.altoslib_11;
  20
  21 import java.io.*;
  22 import java.util.*;
  23 import java.text.*;
  24
  25 class AltosTelemetryIterator implements Iterator<AltosState> {
  26         AltosState                      state;
  27         Iterator<AltosTelemetry>        telems;
  28         AltosTelemetry                  next;
  29         boolean                         seen;
  30
  31         public boolean hasNext() {
  32                 return !seen || telems.hasNext();
  33         }
  34
  35         public AltosState next() {
  36                 if (seen) {
  37                         AltosState      n = state.clone();
  38                         AltosTelemetry  t = telems.next();
  39
  40                         t.update_state(n);
  41                         state = n;
  42                 }
  43                 seen = true;
  44                 return state;
  45         }
  46
  47         public void remove () {
  48         }
  49
  50         public AltosTelemetryIterator(AltosState start, Iterator<AltosTelemetry> telems) {
  51                 this.state = start;
  52                 this.telems = telems;
  53                 this.seen = false;
  54         }
  55 }
  56
  57 public class AltosTelemetryFile extends AltosStateIterable {
  58
  59         AltosTelemetryIterable  telems;
  60         AltosState              start;
  61
  62         public void write_comments(PrintStream out) {
  63         }
  64
  65         public void write(PrintStream out) {
  66
  67         }
  68
  69         public AltosTelemetryFile(FileInputStream input) {
  70                 telems = new AltosTelemetryIterable(input);
  71                 start = new AltosState();
  72
  73                 /* Find boost tick */
  74                 AltosState      state = start.clone();
  75
  76                 for (AltosTelemetry telem : telems) {
  77                         telem.update_state(state);
  78                         state.finish_update();
  79                         if (state.state() != AltosLib.ao_flight_invalid && state.state() >= AltosLib.ao_flight_boost) {
  80                                 start.set_boost_tick(state.tick);
  81                                 break;
  82                         }
  83                 }
  84         }
  85
  86         public Iterator<AltosState> iterator() {
  87                 AltosState                      state = start.clone();
  88                 Iterator<AltosTelemetry>        i = telems.iterator();
  89
  90                 while (i.hasNext() && !state.valid()) {
  91                         AltosTelemetry  t = i.next();
  92                         t.update_state(state);
  93                         state.finish_update();
  94                 }
  95                 return new AltosTelemetryIterator(state, i);
  96         }
  97 }