forked from upstream-mirrors/OpenTracks
Added widget for displaying track stats and starting/stopping tracks.
Added track update broadcast to TrackRecordingService. Added start and end track actions to TrackRecordingService.
This commit is contained in:
saxman
@@ -0,0 +1,455 @@
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/*
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* Copyright 2008 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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package com.google.android.apps.mytracks.io;
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import static com.google.android.apps.mytracks.Constants.TAG;
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import com.google.android.apps.mytracks.Constants;
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import com.google.android.apps.mytracks.ProgressIndicator;
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import com.google.android.apps.mytracks.content.MyTracksProviderUtils;
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import com.google.android.apps.mytracks.content.Track;
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import com.google.android.apps.mytracks.content.Waypoint;
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import com.google.android.apps.mytracks.io.mymaps.MapsFacade;
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import com.google.android.apps.mytracks.stats.DoubleBuffer;
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import com.google.android.apps.mytracks.stats.TripStatistics;
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import com.google.android.apps.mytracks.util.LocationUtils;
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import com.google.android.apps.mytracks.util.StringUtils;
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import com.google.android.apps.mytracks.util.UnitConversions;
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import com.google.android.maps.mytracks.R;
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import android.app.Activity;
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import android.content.SharedPreferences;
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import android.database.Cursor;
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import android.location.Location;
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import android.util.Log;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Vector;
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/**
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* A helper class used to transmit tracks to Google MyMaps.
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* A new instance should be used for each upload.
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*
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* IMPORTANT: while this code is Apache-licensed, please notice that usage of
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* the Google Maps servers through this API is only allowed for the My Tracks
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* application. Other applications looking to upload maps data should look
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* into using the Fusion Tables API.
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*
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* @author Leif Hendrik Wilden
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*/
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public class SendToMyMaps implements Runnable {
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public static final String NEW_MAP_ID = "new";
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private static final int MAX_POINTS_PER_UPLOAD = 2048;
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private final Activity context;
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private final AuthManager auth;
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private final long trackId;
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private final ProgressIndicator progressIndicator;
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private final OnSendCompletedListener onCompletion;
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private final StringUtils stringUtils;
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private final MyTracksProviderUtils providerUtils;
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private String mapId;
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private MapsFacade mapsClient;
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// Progress status
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private int totalLocationsRead;
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private int totalLocationsPrepared;
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private int totalLocationsUploaded;
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private int totalLocations;
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private int totalSegmentsUploaded;
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public interface OnSendCompletedListener {
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void onSendCompleted(String mapId, boolean success, int statusMessage);
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}
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public SendToMyMaps(Activity context, String mapId, AuthManager auth,
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long trackId, ProgressIndicator progressIndicator,
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OnSendCompletedListener onCompletion) {
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this.context = context;
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this.mapId = mapId;
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this.auth = auth;
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this.trackId = trackId;
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this.progressIndicator = progressIndicator;
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this.onCompletion = onCompletion;
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this.stringUtils = new StringUtils(context);
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this.providerUtils = MyTracksProviderUtils.Factory.get(context);
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}
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@Override
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public void run() {
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Log.d(TAG, "Sending to MyMaps: trackId = " + trackId);
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doUpload();
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}
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private void doUpload() {
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int statusMessageId = R.string.error_sending_to_mymap;
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boolean success = true;
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try {
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progressIndicator.setProgressValue(1);
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progressIndicator.setProgressMessage(
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R.string.progress_message_reading_track);
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// Get the track meta-data
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Track track = providerUtils.getTrack(trackId);
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String originalDescription = track.getDescription();
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track.setDescription("<p>" + track.getDescription() + "</p><p>"
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+ stringUtils.generateTrackDescription(track, null, null) + "</p>");
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mapsClient = new MapsFacade(context, auth);
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// Create a new map if necessary:
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boolean isNewMap = mapId.equals(NEW_MAP_ID);
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if (isNewMap) {
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SharedPreferences preferences = context.getSharedPreferences(
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Constants.SETTINGS_NAME, 0);
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boolean mapPublic = true;
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if (preferences != null) {
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mapPublic = preferences.getBoolean(
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context.getString(R.string.default_map_public_key), true);
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}
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progressIndicator.setProgressMessage(
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R.string.progress_message_creating_map);
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StringBuilder mapIdBuilder = new StringBuilder();
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success = mapsClient.createNewMap(
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track.getName(), track.getCategory(), originalDescription, mapPublic, mapIdBuilder);
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mapId = mapIdBuilder.toString();
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}
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// Upload all of the segments of the track plus start/end markers
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if (success) {
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success = uploadAllTrackPoints(track, originalDescription);
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}
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// Put waypoints.
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if (success) {
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Cursor c = providerUtils.getWaypointsCursor(
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track.getId(), 0,
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Constants.MAX_LOADED_WAYPOINTS_POINTS);
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if (c != null) {
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try {
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if (c.getCount() > 1 && c.moveToFirst()) {
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// This will skip the 1st waypoint (it carries the stats for the
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// last segment).
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ArrayList<Waypoint> waypoints = new ArrayList<Waypoint>(c.getCount() - 1);
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while (c.moveToNext()) {
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Waypoint wpt = providerUtils.createWaypoint(c);
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waypoints.add(wpt);
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}
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success = mapsClient.uploadWaypoints(mapId, waypoints);
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}
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} finally {
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c.close();
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}
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} else {
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success = false;
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}
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if (!success) {
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Log.w(TAG, "SendToMyMaps: upload waypoints failed.");
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}
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}
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if (success) {
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statusMessageId = isNewMap
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? R.string.status_new_mymap_has_been_created
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: R.string.status_tracks_have_been_uploaded;
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}
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Log.d(TAG, "SendToMyMaps: Done: " + success);
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progressIndicator.setProgressValue(100);
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} finally {
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if (mapsClient != null) {
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mapsClient.cleanUp();
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}
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final boolean finalSuccess = success;
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final int finalStatusMessageId = statusMessageId;
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context.runOnUiThread(new Runnable() {
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public void run() {
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if (onCompletion != null) {
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onCompletion.onSendCompleted(
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mapId, finalSuccess, finalStatusMessageId);
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}
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}
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});
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}
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}
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private boolean uploadAllTrackPoints(
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final Track track, String originalDescription) {
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SharedPreferences preferences = context.getSharedPreferences(
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Constants.SETTINGS_NAME, 0);
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boolean metricUnits = true;
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if (preferences != null) {
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metricUnits =
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preferences.getBoolean(context.getString(R.string.metric_units_key),
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true);
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}
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Cursor locationsCursor =
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providerUtils.getLocationsCursor(track.getId(), 0, -1, false);
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try {
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if (!locationsCursor.moveToFirst()) {
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Log.w(TAG, "Unable to get any points to upload");
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return false;
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}
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totalLocationsRead = 0;
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totalLocationsPrepared = 0;
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totalLocationsUploaded = 0;
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totalLocations = locationsCursor.getCount();
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totalSegmentsUploaded = 0;
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// Limit the number of elevation readings. Ideally we would want around 250.
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int elevationSamplingFrequency =
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Math.max(1, (int) (totalLocations / 250.0));
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Log.d(TAG,
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"Using elevation sampling factor: " + elevationSamplingFrequency
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+ " on " + totalLocations);
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double totalDistance = 0;
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Vector<Double> distances = new Vector<Double>();
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Vector<Double> elevations = new Vector<Double>();
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DoubleBuffer elevationBuffer =
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new DoubleBuffer(Constants.ELEVATION_SMOOTHING_FACTOR);
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List<Location> locations = new ArrayList<Location>(MAX_POINTS_PER_UPLOAD);
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progressIndicator.setProgressMessage(
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R.string.progress_message_reading_track);
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Location lastLocation = null;
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do {
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if (totalLocationsRead % 100 == 0) {
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updateProgress();
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}
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Location loc = providerUtils.createLocation(locationsCursor);
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locations.add(loc);
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if (totalLocationsRead == 0) {
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// Put a marker at the first point of the first valid segment:
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mapsClient.uploadMarker(mapId, track.getName(), track.getDescription(), loc, true);
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}
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// Add to the elevation profile.
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if (loc != null && LocationUtils.isValidLocation(loc)) {
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// All points go into the smoothing buffer...
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elevationBuffer.setNext(metricUnits ? loc.getAltitude()
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: loc.getAltitude() * UnitConversions.M_TO_FT);
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if (lastLocation != null) {
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double dist = lastLocation.distanceTo(loc);
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totalDistance += dist;
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}
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// ...but only a few points are really used to keep the url short.
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if (totalLocationsRead % elevationSamplingFrequency == 0) {
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distances.add(totalDistance);
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elevations.add(elevationBuffer.getAverage());
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}
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}
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// If the location was not valid, it's a segment split, so make sure the
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// distance between the previous segment and the new one is not accounted
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// for in the next iteration.
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lastLocation = loc;
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// Every now and then, upload the accumulated points
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if (totalLocationsRead % MAX_POINTS_PER_UPLOAD
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== MAX_POINTS_PER_UPLOAD - 1) {
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if (!prepareAndUploadPoints(track, locations)) {
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return false;
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}
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}
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totalLocationsRead++;
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} while (locationsCursor.moveToNext());
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// Do a final upload with what's left
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if (!prepareAndUploadPoints(track, locations)) {
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return false;
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}
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// Put an end marker at the last point of the last valid segment:
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if (lastLocation != null) {
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track.setDescription("<p>" + originalDescription + "</p><p>"
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+ stringUtils.generateTrackDescription(
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track, distances, elevations)
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+ "</p>");
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return mapsClient.uploadMarker(mapId, track.getName(), track.getDescription(),
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lastLocation, false);
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}
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return true;
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} finally {
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locationsCursor.close();
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}
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}
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private boolean prepareAndUploadPoints(Track track, List<Location> locations) {
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progressIndicator.setProgressMessage(
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R.string.progress_message_preparing_track);
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updateProgress();
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int numLocations = locations.size();
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if (numLocations < 2) {
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Log.d(TAG, "Not preparing/uploading too few points");
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totalLocationsUploaded += numLocations;
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return true;
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}
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// Prepare/pre-process the points
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ArrayList<Track> splitTracks = prepareLocations(track, locations);
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// Start uploading them
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progressIndicator.setProgressMessage(
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R.string.progress_message_sending_mymaps);
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for (Track splitTrack : splitTracks) {
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if (totalSegmentsUploaded > 1) {
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splitTrack.setName(splitTrack.getName() + " "
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+ String.format(
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context.getString(R.string.part), totalSegmentsUploaded));
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}
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totalSegmentsUploaded++;
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Log.d(TAG,
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"SendToMyMaps: Prepared feature for upload w/ "
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+ splitTrack.getLocations().size() + " points.");
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// Transmit tracks via GData feed:
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// -------------------------------
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Log.d(TAG,
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"SendToMyMaps: Uploading to map " + mapId + " w/ auth " + auth);
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if (!mapsClient.uploadTrackPoints(mapId, splitTrack.getName(), splitTrack.getLocations())) {
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Log.e(TAG, "Uploading failed");
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return false;
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}
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}
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locations.clear();
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totalLocationsUploaded += numLocations;
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updateProgress();
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return true;
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}
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/**
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* Prepares a buffer of locations for transmission to google maps.
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*
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* @param track the original track with meta data
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* @param buffer a buffer of locations on the track
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* @return an array of tracks each with a sub section of the points in the
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* original buffer
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*/
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private ArrayList<Track> prepareLocations(
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Track track, Iterable<Location> locations) {
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ArrayList<Track> splitTracks = new ArrayList<Track>();
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// Create segments from each full track:
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Track segment = new Track();
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TripStatistics segmentStats = segment.getStatistics();
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TripStatistics trackStats = track.getStatistics();
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segment.setId(track.getId());
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segment.setName(track.getName());
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segment.setDescription(/* track.getDescription() */ "");
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segment.setCategory(track.getCategory());
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segmentStats.setStartTime(trackStats.getStartTime());
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segmentStats.setStopTime(trackStats.getStopTime());
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boolean startNewTrackSegment = false;
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for (Location loc : locations) {
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if (totalLocationsPrepared % 100 == 0) {
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updateProgress();
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}
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if (loc.getLatitude() > 90) {
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startNewTrackSegment = true;
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}
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if (startNewTrackSegment) {
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// Close up the last segment.
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prepareTrackSegment(segment, splitTracks);
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Log.d(TAG,
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"MyTracksSendToMyMaps: Starting new track segment...");
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startNewTrackSegment = false;
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segment = new Track();
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segment.setId(track.getId());
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segment.setName(track.getName());
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segment.setDescription(/* track.getDescription() */ "");
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segment.setCategory(track.getCategory());
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}
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if (loc.getLatitude() <= 90) {
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segment.addLocation(loc);
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if (segmentStats.getStartTime() < 0) {
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segmentStats.setStartTime(loc.getTime());
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}
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}
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totalLocationsPrepared++;
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}
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prepareTrackSegment(segment, splitTracks);
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return splitTracks;
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}
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/**
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* Prepares a track segment for sending to google maps.
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* The main steps are:
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* - correcting end time
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* - decimating locations
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* - splitting into smaller tracks.
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*
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* The final track pieces will be put in the array list splitTracks.
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*
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* @param segment the original segment of the track
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* @param splitTracks an array of smaller track segments
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*/
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private void prepareTrackSegment(
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Track segment, ArrayList<Track> splitTracks) {
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TripStatistics segmentStats = segment.getStatistics();
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if (segmentStats.getStopTime() < 0
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&& segment.getLocations().size() > 0) {
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segmentStats.setStopTime(segment.getLocations().size() - 1);
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}
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/*
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* Decimate to 2 meter precision. Mapshop doesn't like too many
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* points:
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*/
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LocationUtils.decimate(segment, 2.0);
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/* It the track still has > 500 points, split it in pieces: */
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if (segment.getLocations().size() > 500) {
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splitTracks.addAll(LocationUtils.split(segment, 500));
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} else if (segment.getLocations().size() >= 2) {
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splitTracks.add(segment);
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}
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}
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/**
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* Sets the current upload progress.
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*/
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private void updateProgress() {
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// The percent of the total that represents the completed part of this
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// segment.
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int totalPercentage =
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(totalLocationsRead + totalLocationsPrepared + totalLocationsUploaded)
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/ (totalLocations * 3);
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totalPercentage = Math.min(99, totalPercentage);
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progressIndicator.setProgressValue(totalPercentage);
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}
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}
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Reference in New Issue
Block a user