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Issue 6576020: Remove Gears from Chrome (Closed) Base URL: http://git.chromium.org/git/chromium.git@trunk
Patch Set: windows fixes Created 9 years, 9 months ago
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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "content/browser/geolocation/gps_location_provider_linux.h" 5 #include "content/browser/geolocation/gps_location_provider_linux.h"
6 6
7 #include <algorithm> 7 #include <algorithm>
8 #include <cmath> 8 #include <cmath>
9 9
10 #include "base/compiler_specific.h" 10 #include "base/compiler_specific.h"
11 #include "base/logging.h" 11 #include "base/logging.h"
12 #include "base/message_loop.h" 12 #include "base/message_loop.h"
13 #include "content/browser/geolocation/libgps_wrapper_linux.h" 13 #include "content/browser/geolocation/libgps_wrapper_linux.h"
14 14
15 namespace { 15 namespace {
16 const int kGpsdReconnectRetryIntervalMillis = 10 * 1000; 16 const int kGpsdReconnectRetryIntervalMillis = 10 * 1000;
17 // As per http://gpsd.berlios.de/performance.html#id374524, poll twice per sec. 17 // As per http://gpsd.berlios.de/performance.html#id374524, poll twice per sec.
18 const int kPollPeriodMovingMillis = 500; 18 const int kPollPeriodMovingMillis = 500;
19 // Poll less frequently whilst stationary. 19 // Poll less frequently whilst stationary.
20 const int kPollPeriodStationaryMillis = kPollPeriodMovingMillis * 3; 20 const int kPollPeriodStationaryMillis = kPollPeriodMovingMillis * 3;
21 // GPS reading must differ by more than this amount to be considered movement. 21 // GPS reading must differ by more than this amount to be considered movement.
22 const int kMovementThresholdMeters = 20; 22 const int kMovementThresholdMeters = 20;
23 23
24 // This algorithm is reused from the corresponding code in the gears project. 24 // This algorithm is reused from the corresponding code in the Gears project.
25 // The arbitrary delta is decreased (gears used 100 meters); if we need to 25 // The arbitrary delta is decreased (Gears used 100 meters); if we need to
26 // decrease it any further we'll likely want to do some smarter filtering to 26 // decrease it any further we'll likely want to do some smarter filtering to
27 // remove GPS location jitter noise. 27 // remove GPS location jitter noise.
28 bool PositionsDifferSiginificantly(const Geoposition& position_1, 28 bool PositionsDifferSiginificantly(const Geoposition& position_1,
29 const Geoposition& position_2) { 29 const Geoposition& position_2) {
30 const bool pos_1_valid = position_1.IsValidFix(); 30 const bool pos_1_valid = position_1.IsValidFix();
31 if (pos_1_valid != position_2.IsValidFix()) 31 if (pos_1_valid != position_2.IsValidFix())
32 return true; 32 return true;
33 if (!pos_1_valid) { 33 if (!pos_1_valid) {
34 DCHECK(!position_2.IsValidFix()); 34 DCHECK(!position_2.IsValidFix());
35 return false; 35 return false;
(...skipping 82 matching lines...) Expand 10 before | Expand all | Expand 10 after
118 task_factory_.RevokeAll(); 118 task_factory_.RevokeAll();
119 MessageLoop::current()->PostDelayedTask( 119 MessageLoop::current()->PostDelayedTask(
120 FROM_HERE, 120 FROM_HERE,
121 task_factory_.NewRunnableMethod(&GpsLocationProviderLinux::DoGpsPollTask), 121 task_factory_.NewRunnableMethod(&GpsLocationProviderLinux::DoGpsPollTask),
122 interval); 122 interval);
123 } 123 }
124 124
125 LocationProviderBase* NewSystemLocationProvider() { 125 LocationProviderBase* NewSystemLocationProvider() {
126 return new GpsLocationProviderLinux(LibGps::New); 126 return new GpsLocationProviderLinux(LibGps::New);
127 } 127 }
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