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https://codeberg.org/Freeyourgadget/Gadgetbridge
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220 lines
8.8 KiB
Java
220 lines
8.8 KiB
Java
/* Copyright (C) 2017-2018 AndrewH, Carsten Pfeiffer, Daniele Gobbetti
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This file is part of Gadgetbridge.
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Gadgetbridge is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published
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by the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Gadgetbridge is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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package nodomain.freeyourgadget.gadgetbridge.export;
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import android.support.annotation.NonNull;
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import android.support.annotation.Nullable;
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import android.util.Xml;
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import org.xmlpull.v1.XmlSerializer;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.math.BigDecimal;
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import java.math.RoundingMode;
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import java.nio.charset.StandardCharsets;
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import java.util.Date;
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import java.util.List;
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import nodomain.freeyourgadget.gadgetbridge.activities.HeartRateUtils;
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import nodomain.freeyourgadget.gadgetbridge.model.ActivityPoint;
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import nodomain.freeyourgadget.gadgetbridge.model.ActivityTrack;
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import nodomain.freeyourgadget.gadgetbridge.model.GPSCoordinate;
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import nodomain.freeyourgadget.gadgetbridge.util.DateTimeUtils;
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import nodomain.freeyourgadget.gadgetbridge.util.FileUtils;
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public class GPXExporter implements ActivityTrackExporter {
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private static final String NS_DEFAULT = "";
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private static final String NS_DEFAULT_URI = "http://www.topografix.com/GPX/1/1";
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private static final String NS_DEFAULT_PREFIX = "";
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private static final String NS_TRACKPOINT_EXTENSION = "gpxtpx";
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private static final String NS_TRACKPOINT_EXTENSION_URI = "http://www.garmin.com/xmlschemas/TrackPointExtension/v1";
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private static final String NS_XSI_URI = "http://www.w3.org/2001/XMLSchema-instance";
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private String creator;
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private boolean includeHeartRate = true;
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private boolean includeHeartRateOfNearestSample = true;
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@NonNull
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@Override
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public String getDefaultFileName(@NonNull ActivityTrack track) {
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return FileUtils.makeValidFileName(track.getName());
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}
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@Override
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public void performExport(ActivityTrack track, File targetFile) throws IOException, GPXTrackEmptyException {
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String encoding = StandardCharsets.UTF_8.name();
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XmlSerializer ser = Xml.newSerializer();
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try {
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ser.setOutput(new FileOutputStream(targetFile), encoding);
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ser.startDocument(encoding, Boolean.TRUE);
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ser.setPrefix("xsi", NS_XSI_URI);
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ser.setPrefix(NS_TRACKPOINT_EXTENSION, NS_TRACKPOINT_EXTENSION_URI);
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ser.setPrefix(NS_DEFAULT_PREFIX, NS_DEFAULT);
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ser.startTag(NS_DEFAULT, "gpx");
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ser.attribute(NS_DEFAULT, "version", "1.1");
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ser.attribute(NS_DEFAULT, "creator", getCreator());
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ser.attribute(NS_XSI_URI, "schemaLocation", NS_DEFAULT_URI + " " + "http://www.topografix.com/GPX/1/1/gpx.xsd");
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exportMetadata(ser, track);
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exportTrack(ser, track);
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ser.endTag(NS_DEFAULT, "gpx");
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ser.endDocument();
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} finally {
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ser.flush();
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}
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}
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private void exportMetadata(XmlSerializer ser, ActivityTrack track) throws IOException {
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ser.startTag(NS_DEFAULT, "metadata");
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ser.startTag(NS_DEFAULT, "name").text(track.getName()).endTag(NS_DEFAULT, "name");
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ser.startTag(NS_DEFAULT, "author");
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ser.startTag(NS_DEFAULT, "name").text(track.getUser().getName()).endTag(NS_DEFAULT, "name");
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ser.endTag(NS_DEFAULT, "author");
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ser.startTag(NS_DEFAULT, "time").text(formatTime(new Date())).endTag(NS_DEFAULT, "time");
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ser.endTag(NS_DEFAULT, "metadata");
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}
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private String formatTime(Date date) {
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return DateTimeUtils.formatIso8601(date);
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}
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private void exportTrack(XmlSerializer ser, ActivityTrack track) throws IOException, GPXTrackEmptyException {
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ser.startTag(NS_DEFAULT, "trk");
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ser.startTag(NS_DEFAULT, "trkseg");
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List<ActivityPoint> trackPoints = track.getTrackPoints();
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String source = getSource(track);
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boolean atLeastOnePointExported = false;
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for (ActivityPoint point : trackPoints) {
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atLeastOnePointExported |= exportTrackPoint(ser, point, source, trackPoints);
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}
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if(!atLeastOnePointExported) {
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throw new GPXTrackEmptyException();
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}
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ser.endTag(NS_DEFAULT, "trkseg");
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ser.endTag(NS_DEFAULT, "trk");
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}
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private String getSource(ActivityTrack track) {
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return track.getDevice().getName();
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}
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private boolean exportTrackPoint(XmlSerializer ser, ActivityPoint point, String source, List<ActivityPoint> trackPoints) throws IOException {
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GPSCoordinate location = point.getLocation();
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if (location == null) {
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return false; // skip invalid points, that just contain hr data, for example
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}
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ser.startTag(NS_DEFAULT, "trkpt");
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ser.attribute(NS_DEFAULT, "lon", formatLocation(location.getLongitude()));
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ser.attribute(NS_DEFAULT, "lat", formatLocation(location.getLatitude()));
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ser.startTag(NS_DEFAULT, "ele").text(formatLocation(location.getAltitude())).endTag(NS_DEFAULT, "ele");
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ser.startTag(NS_DEFAULT, "time").text(DateTimeUtils.formatIso8601UTC(point.getTime())).endTag(NS_DEFAULT, "time");
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String description = point.getDescription();
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if (description != null) {
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ser.startTag(NS_DEFAULT, "desc").text(description).endTag(NS_DEFAULT, "desc");
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}
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//ser.startTag(NS_DEFAULT, "src").text(source).endTag(NS_DEFAULT, "src");
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exportTrackpointExtensions(ser, point, trackPoints);
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ser.endTag(NS_DEFAULT, "trkpt");
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return true;
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}
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private void exportTrackpointExtensions(XmlSerializer ser, ActivityPoint point, List<ActivityPoint> trackPoints) throws IOException {
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if (!includeHeartRate) {
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return;
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}
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int hr = point.getHeartRate();
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if (!HeartRateUtils.getInstance().isValidHeartRateValue(hr)) {
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if (!includeHeartRateOfNearestSample) {
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return;
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}
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ActivityPoint closestPointItem = findClosestSensibleActivityPoint(point.getTime(), trackPoints);
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if(closestPointItem == null) {
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return;
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}
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hr = closestPointItem.getHeartRate();
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if (!HeartRateUtils.getInstance().isValidHeartRateValue(hr)) {
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return;
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}
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}
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ser.startTag(NS_DEFAULT, "extensions");
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ser.setPrefix(NS_TRACKPOINT_EXTENSION, NS_TRACKPOINT_EXTENSION_URI);
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ser.startTag(NS_TRACKPOINT_EXTENSION_URI, "TrackPointExtension");
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ser.startTag(NS_TRACKPOINT_EXTENSION_URI, "hr").text(String.valueOf(hr)).endTag(NS_TRACKPOINT_EXTENSION_URI, "hr");
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ser.endTag(NS_TRACKPOINT_EXTENSION_URI, "TrackPointExtension");
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ser.endTag(NS_DEFAULT, "extensions");
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}
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private @Nullable ActivityPoint findClosestSensibleActivityPoint(Date time, List<ActivityPoint> trackPoints) {
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ActivityPoint closestPointItem = null;
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HeartRateUtils heartRateUtilsInstance = HeartRateUtils.getInstance();
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long lowestDifference = 60 * 2 * 1000; // minimum distance is 2min
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for (ActivityPoint pointItem : trackPoints) {
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int hrItem = pointItem.getHeartRate();
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if (heartRateUtilsInstance.isValidHeartRateValue(hrItem)) {
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Date timeItem = pointItem.getTime();
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if (timeItem.after(time) || timeItem.equals(time)) {
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break; // we assume that the given trackPoints are sorted in time ascending order (oldest first)
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}
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long difference = time.getTime() - timeItem.getTime();
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if (difference < lowestDifference) {
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lowestDifference = difference;
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closestPointItem = pointItem;
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}
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}
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}
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return closestPointItem;
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}
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private String formatLocation(double value) {
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return new BigDecimal(value).setScale(GPSCoordinate.GPS_DECIMAL_DEGREES_SCALE, RoundingMode.HALF_UP).toPlainString();
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}
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public String getCreator() {
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return creator; // TODO: move to some kind of BrandingInfo class
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}
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public void setCreator(String creator) {
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this.creator = creator;
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}
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public void setIncludeHeartRate(boolean includeHeartRate) {
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this.includeHeartRate = includeHeartRate;
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}
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public boolean isIncludeHeartRate() {
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return includeHeartRate;
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}
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}
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