    001// License: GPL. For details, see LICENSE file.
    002package org.openstreetmap.josm.plugins.streetside.io.download;
    003
    004import java.io.BufferedInputStream;
    005import java.io.IOException;
    006import java.net.URL;
    007import java.net.URLConnection;
    008import java.util.ArrayList;
    009import java.util.EnumSet;
    010import java.util.List;
    011import java.util.function.Function;
    012
    013import org.openstreetmap.josm.data.Bounds;
    014import org.openstreetmap.josm.plugins.streetside.StreetsideAbstractImage;
    015import org.openstreetmap.josm.plugins.streetside.StreetsideData;
    016import org.openstreetmap.josm.plugins.streetside.StreetsideImage;
    017import org.openstreetmap.josm.plugins.streetside.StreetsideSequence;
    018import org.openstreetmap.josm.plugins.streetside.cubemap.CubemapUtils;
    019import org.openstreetmap.josm.plugins.streetside.utils.StreetsideProperties;
    020import org.openstreetmap.josm.plugins.streetside.utils.StreetsideSequenceIdGenerator;
    021import org.openstreetmap.josm.plugins.streetside.utils.StreetsideURL.APIv3;
    022import org.openstreetmap.josm.tools.I18n;
    023import org.openstreetmap.josm.tools.Logging;
    024
    025import com.fasterxml.jackson.core.JsonParseException;
    026import com.fasterxml.jackson.core.JsonParser;
    027import com.fasterxml.jackson.core.JsonToken;
    028import com.fasterxml.jackson.databind.DeserializationFeature;
    029import com.fasterxml.jackson.databind.JsonMappingException;
    030import com.fasterxml.jackson.databind.ObjectMapper;
    031import com.fasterxml.jackson.databind.node.ObjectNode;
    032
    033public final class SequenceDownloadRunnable extends BoundsDownloadRunnable {
    034
    035        private final StreetsideData data;
    036
    037  private static final Function<Bounds, URL> URL_GEN = APIv3::searchStreetsideSequences;
    038
    039  public SequenceDownloadRunnable(final StreetsideData data, final Bounds bounds) {
    040    super(bounds);
    041    this.data = data;
    042  }
    043
    044  @Override
    045  public void run(final URLConnection con) throws IOException {
    046    if (Thread.interrupted()) {
    047      return;
    048    }
    049
    050    StreetsideSequence seq = new StreetsideSequence(StreetsideSequenceIdGenerator.generateId());
    051
    052    // TODO: how can LatLon and heading / camera angles (he attribute) be set for a sequence?
    053    // and does it make sense? @rrh
    054
    055    List<StreetsideImage> bubbleImages = new ArrayList<>();
    056
    057    final long startTime = System.currentTimeMillis();
    058
    059    ObjectMapper mapper = new ObjectMapper();
    060    // Creation of Jackson Object Mapper necessary for Silverlight 2.0 JSON Syntax parsing:
    061    // (no double quotes in JSON on attribute names)
    062    mapper.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);
    063
    064    // Allow unrecognized properties - won't break with addition of new attributes
    065    mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    066
    067    try {
    068      JsonParser parser = mapper.getFactory().createParser(new BufferedInputStream(con.getInputStream()));
    069    if(parser.nextToken() != JsonToken.START_ARRAY) {
    070      parser.close();
    071      throw new IllegalStateException("Expected an array");
    072    }
    073
    074    StreetsideImage previous = null;
    075
    076    while (parser.nextToken() == JsonToken.START_OBJECT) {
    077        // read everything from this START_OBJECT to the matching END_OBJECT
    078        // and return it as a tree model ObjectNode
    079        ObjectNode node = mapper.readTree(parser);
    080        // Discard the first sequence ('enabled') - it does not contain bubble data
    081        if (node.get("id") != null && node.get("la") != null && node.get("lo") != null) {
    082          StreetsideImage image = new StreetsideImage(CubemapUtils.convertDecimal2Quaternary(node.path("id").asLong()), node.path("la").asDouble(), node.get("lo").asDouble());
    083          if(previous!=null) {
    084                  // Analyze sequence behaviour
    085                  //previous.setNext(image.)
    086          }
    087          image.setAd(node.path("ad").asInt());
    088          image.setAl(node.path("al").asDouble());
    089          image.setBl(node.path("bl").asText());
    090          image.setCd(node.path("cd").asLong());
    091          image.setHe(node.path("he").asDouble());
    092          image.setMl(node.path("ml").asInt());
    093          image.setNbn(node.findValuesAsText("nbn"));
    094          image.setNe(node.path("ne").asLong());
    095          image.setPbn(node.findValuesAsText("pbn"));
    096          image.setPi(node.path("pi").asDouble());
    097          image.setPr(node.path("pr").asLong());
    098          // TODO: inner class @rrh
    099          // image.setRn(node.path("rn").asText());
    100          image.setRo(node.path("ro").asDouble());
    101
    102          // Add list of cubemap tile images to images
    103          List<StreetsideImage> tiles = new ArrayList<StreetsideImage>();
    104
    105          EnumSet.allOf(CubemapUtils.CubemapFaces.class).forEach(face -> {
    106
    107            for (int i = 0; i < 4; i++) {
    108              // Initialize four-tiled cubemap faces (four images per cube side with 18-length
    109              // Quadkey)
    110              // if (StreetsideProperties.CUBEFACE_SIZE.get().intValue() == 4) {
    111              if (!StreetsideProperties.SHOW_HIGH_RES_STREETSIDE_IMAGERY.get()) {
    112                StreetsideImage tile = new StreetsideImage(String.valueOf(image.getId() + Integer.valueOf(i)));
    113                tiles.add(tile);
    114              }
    115              // Initialize four-tiled cubemap faces (four images per cub eside with 20-length
    116              // Quadkey)
    117              // if (StreetsideProperties.CUBEFACE_SIZE.get().intValue() == 16) {
    118              if (StreetsideProperties.SHOW_HIGH_RES_STREETSIDE_IMAGERY.get()) {
    119                for (int j = 0; j < 4; j++) {
    120                  StreetsideImage tile = new StreetsideImage(
    121                    String.valueOf(
    122                      image.getId() + face.getValue() + CubemapUtils.rowCol2StreetsideCellAddressMap
    123                        .get(String.valueOf(Integer.valueOf(i).toString() + Integer.valueOf(j).toString()))
    124                      ));
    125                  tiles.add(tile);
    126                }
    127              }
    128            }
    129          });
    130
    131          bubbleImages.add(image);
    132          Logging.info("Added image with id <" + image.getId() + ">");
    133          if (StreetsideProperties.PREDOWNLOAD_CUBEMAPS.get()) {
    134            StreetsideData.downloadSurroundingCubemaps(image);
    135          }
    136        }
    137      }
    138
    139    parser.close();
    140
    141    //StreetsideImage[] images;
    142
    143      // First load all of the 'bubbles' from the request as Streetside Images
    144      /*List<StreetsideImage> images = mapper
    145        .readValue(new BufferedInputStream(con.getInputStream()), new TypeReference<List<StreetsideImage>>() {});
    146      */
    147
    148
    149      //images = mapper.readValue(new BufferedInputStream(con.getInputStream()), StreetsideImage[].class);
    150
    151      /*for (StreetsideImage image : bubbleImages) {
    152        image = JsonStreetsideSequencesDecoder.decodeBubbleData(image);
    153        if(image != null) bubbleImages.add(image);
    154      }*/
    155
    156    } catch (JsonParseException e) {
    157      e.printStackTrace();
    158    } catch (JsonMappingException e) {
    159      e.printStackTrace();
    160    } catch (IOException e) {
    161      e.printStackTrace();
    162    }
    163
    164    /** Top Level Bubble Metadata in Streetside are bubble (aka images) not Sequences
    165     *  so a sequence needs to be created and have images added to it. If the distribution
    166     *  of Streetside images is non-sequential, the Mapillary "Walking Action" may behave
    167     *  unpredictably.
    168     **/
    169    seq.add(bubbleImages);
    170
    171    if (StreetsideProperties.CUT_OFF_SEQUENCES_AT_BOUNDS.get()) {
    172      for (StreetsideAbstractImage img : seq.getImages()) {
    173        if (bounds.contains(img.getLatLon())) {
    174          data.add(img);
    175        } else {
    176          seq.remove(img);
    177        }
    178      }
    179    } else {
    180      boolean sequenceCrossesThroughBounds = false;
    181      for (int i = 0; i < seq.getImages().size() && !sequenceCrossesThroughBounds; i++) {
    182        sequenceCrossesThroughBounds = bounds.contains(seq.getImages().get(i).getLatLon());
    183      }
    184      if (sequenceCrossesThroughBounds) {
    185        data.addAll(seq.getImages(), true);
    186      }
    187    }
    188
    189    final long endTime = System.currentTimeMillis();
    190    Logging.debug(I18n.tr("Sucessfully loaded {0} Microsoft Streetside images in {0} ",seq.getImages().size(),endTime-startTime%60));
    191  }
    192
    193  @Override
    194  protected Function<Bounds, URL> getUrlGenerator() {
    195    return URL_GEN;
    196  }
    197}