Geolocation: delete GpsLocationProvider and third_party/gpsd/

content/browser/geolocation/gps_location_provider_linux.cc

Index: content/browser/geolocation/gps_location_provider_linux.cc
diff --git a/content/browser/geolocation/gps_location_provider_linux.cc b/content/browser/geolocation/gps_location_provider_linux.cc
deleted file mode 100644
index 685c3c35aac3ddf2347d833e00d42f1f91c3f0e2..0000000000000000000000000000000000000000
--- a/content/browser/geolocation/gps_location_provider_linux.cc
+++ /dev/null
@@ -1,302 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "content/browser/geolocation/gps_location_provider_linux.h"
-
-#include <errno.h>
-
-#include <algorithm>
-#include <cmath>
-
-#include "base/bind.h"
-#include "base/compiler_specific.h"
-#include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/message_loop/message_loop.h"
-#include "base/strings/stringprintf.h"
-#include "content/public/common/geoposition.h"
-
-namespace content {
-namespace {
-
-const int kGpsdReconnectRetryIntervalMillis = 10 * 1000;
-
-// As per http://gpsd.berlios.de/performance.html#id374524, poll twice per sec.
-const int kPollPeriodMovingMillis = 500;
-
-// Poll less frequently whilst stationary.
-const int kPollPeriodStationaryMillis = kPollPeriodMovingMillis * 3;
-
-// GPS reading must differ by more than this amount to be considered movement.
-const int kMovementThresholdMeters = 20;
-
-// This algorithm is reused from the corresponding code in the Gears project.
-// The arbitrary delta is decreased (Gears used 100 meters); if we need to
-// decrease it any further we'll likely want to do some smarter filtering to
-// remove GPS location jitter noise.
-bool PositionsDifferSiginificantly(const Geoposition& position_1,
-                                   const Geoposition& position_2) {
-  const bool pos_1_valid = position_1.Validate();
-  if (pos_1_valid != position_2.Validate())
-    return true;
-  if (!pos_1_valid) {
-    DCHECK(!position_2.Validate());
-    return false;
-  }
-  double delta = std::sqrt(
-      std::pow(std::fabs(position_1.latitude - position_2.latitude), 2) +
-      std::pow(std::fabs(position_1.longitude - position_2.longitude), 2));
-  // Convert to meters. 1 minute of arc of latitude (or longitude at the
-  // equator) is 1 nautical mile or 1852m.
-  delta *= 60 * 1852;
-  return delta > kMovementThresholdMeters;
-}
-
-}  // namespace
-
-#if defined(USE_LIBGPS)
-
-// See http://crbug.com/103751.
-COMPILE_ASSERT(GPSD_API_MAJOR_VERSION == 5, GPSD_API_version_is_not_5);
-
-namespace {
-
-const char kLibGpsName[] = "libgps.so.20";
-
-}  // namespace
-
-LibGps::LibGps()
-    : gps_data_(new gps_data_t),
-      is_open_(false) {
-}
-
-LibGps::~LibGps() {
-  Stop();
-}
-
-LibGps* LibGps::New() {
-  scoped_ptr<LibGps> libgps(new LibGps);
-  if (!libgps->libgps_loader_.Load(kLibGpsName))
-    return NULL;
-
-  return libgps.release();
-}
-
-bool LibGps::Start() {
-  if (is_open_)
-    return true;
-
-  errno = 0;
-  if (libgps_loader_.gps_open(GPSD_SHARED_MEMORY, 0, gps_data_.get()) != 0) {
-    // See gps.h NL_NOxxx for definition of gps_open() error numbers.
-    DLOG(WARNING) << "gps_open() failed " << errno;
-    return false;
-  }
-
-  is_open_ = true;
-  return true;
-}
-
-void LibGps::Stop() {
-  if (is_open_)
-    libgps_loader_.gps_close(gps_data_.get());
-  is_open_ = false;
-}
-
-bool LibGps::Read(Geoposition* position) {
-  DCHECK(position);
-  position->error_code = Geoposition::ERROR_CODE_POSITION_UNAVAILABLE;
-  if (!is_open_) {
-      DLOG(WARNING) << "No gpsd connection";
-      position->error_message = "No gpsd connection";
-      return false;
-  }
-
-  if (libgps_loader_.gps_read(gps_data_.get()) < 0) {
-      DLOG(WARNING) << "gps_read() fails";
-      position->error_message = "gps_read() fails";
-      return false;
-  }
-
-  if (!GetPositionIfFixed(position)) {
-      DLOG(WARNING) << "No fixed position";
-      position->error_message = "No fixed position";
-      return false;
-  }
-
-  position->error_code = Geoposition::ERROR_CODE_NONE;
-  position->timestamp = base::Time::Now();
-  if (!position->Validate()) {
-    // GetPositionIfFixed returned true, yet we've not got a valid fix.
-    // This shouldn't happen; something went wrong in the conversion.
-    NOTREACHED() << "Invalid position from GetPositionIfFixed: lat,long "
-                 << position->latitude << "," << position->longitude
-                 << " accuracy " << position->accuracy << " time "
-                 << position->timestamp.ToDoubleT();
-    position->error_code = Geoposition::ERROR_CODE_POSITION_UNAVAILABLE;
-    position->error_message = "Bad fix from gps";
-    return false;
-  }
-  return true;
-}
-
-bool LibGps::GetPositionIfFixed(Geoposition* position) {
-  DCHECK(position);
-  if (gps_data_->status == STATUS_NO_FIX) {
-    DVLOG(2) << "Status_NO_FIX";
-    return false;
-  }
-
-  if (isnan(gps_data_->fix.latitude) || isnan(gps_data_->fix.longitude)) {
-    DVLOG(2) << "No valid lat/lon value";
-    return false;
-  }
-
-  position->latitude = gps_data_->fix.latitude;
-  position->longitude = gps_data_->fix.longitude;
-
-  if (!isnan(gps_data_->fix.epx) && !isnan(gps_data_->fix.epy)) {
-    position->accuracy = std::max(gps_data_->fix.epx, gps_data_->fix.epy);
-  } else if (isnan(gps_data_->fix.epx) && !isnan(gps_data_->fix.epy)) {
-    position->accuracy = gps_data_->fix.epy;
-  } else if (!isnan(gps_data_->fix.epx) && isnan(gps_data_->fix.epy)) {
-    position->accuracy = gps_data_->fix.epx;
-  } else {
-    // TODO(joth): Fixme. This is a workaround for http://crbug.com/99326
-    DVLOG(2) << "libgps reported accuracy NaN, forcing to zero";
-    position->accuracy = 0;
-  }
-
-  if (gps_data_->fix.mode == MODE_3D && !isnan(gps_data_->fix.altitude)) {
-    position->altitude = gps_data_->fix.altitude;
-    if (!isnan(gps_data_->fix.epv))
-      position->altitude_accuracy = gps_data_->fix.epv;
-  }
-
-  if (!isnan(gps_data_->fix.track))
-    position->heading = gps_data_->fix.track;
-  if (!isnan(gps_data_->fix.speed))
-    position->speed = gps_data_->fix.speed;
-  return true;
-}
-
-#else  // !defined(USE_LIBGPS)
-
-// Stub implementation of LibGps.
-LibGps::LibGps() {
-}
-
-LibGps::~LibGps() {
-}
-
-LibGps* LibGps::New() {
-  return NULL;
-}
-
-bool LibGps::Start() {
-  return false;
-}
-
-void LibGps::Stop() {
-}
-
-bool LibGps::Read(Geoposition* position) {
-  return false;
-}
-
-bool LibGps::GetPositionIfFixed(Geoposition* position) {
-  return false;
-}
-
-#endif  // !defined(USE_LIBGPS)
-
-GpsLocationProviderLinux::GpsLocationProviderLinux(LibGpsFactory libgps_factory)
-    : gpsd_reconnect_interval_millis_(kGpsdReconnectRetryIntervalMillis),
-      poll_period_moving_millis_(kPollPeriodMovingMillis),
-      poll_period_stationary_millis_(kPollPeriodStationaryMillis),
-      libgps_factory_(libgps_factory),
-      weak_factory_(this) {
-  DCHECK(libgps_factory_);
-}
-
-GpsLocationProviderLinux::~GpsLocationProviderLinux() {
-}
-
-bool GpsLocationProviderLinux::StartProvider(bool high_accuracy) {
-  if (!high_accuracy) {
-    StopProvider();
-    return true;  // Not an error condition, so still return true.
-  }
-  if (gps_ != NULL) {
-    DCHECK(weak_factory_.HasWeakPtrs());
-    return true;
-  }
-  position_.error_code = Geoposition::ERROR_CODE_POSITION_UNAVAILABLE;
-  gps_.reset(libgps_factory_());
-  if (gps_ == NULL) {
-    DLOG(WARNING) << "libgps could not be loaded";
-    return false;
-  }
-  ScheduleNextGpsPoll(0);
-  return true;
-}
-
-void GpsLocationProviderLinux::StopProvider() {
-  weak_factory_.InvalidateWeakPtrs();
-  gps_.reset();
-}
-
-void GpsLocationProviderLinux::GetPosition(Geoposition* position) {
-  DCHECK(position);
-  *position = position_;
-  DCHECK(position->Validate() ||
-         position->error_code != Geoposition::ERROR_CODE_NONE);
-}
-
-void GpsLocationProviderLinux::RequestRefresh() {
-  ScheduleNextGpsPoll(0);
-}
-
-void GpsLocationProviderLinux::OnPermissionGranted() {
-}
-
-void GpsLocationProviderLinux::DoGpsPollTask() {
-  if (!gps_->Start()) {
-    DLOG(WARNING) << "Couldn't start GPS provider.";
-    ScheduleNextGpsPoll(gpsd_reconnect_interval_millis_);
-    return;
-  }
-
-  Geoposition new_position;
-  if (!gps_->Read(&new_position)) {
-    ScheduleNextGpsPoll(poll_period_stationary_millis_);
-    return;
-  }
-
-  DCHECK(new_position.Validate() ||
-         new_position.error_code != Geoposition::ERROR_CODE_NONE);
-  const bool differ = PositionsDifferSiginificantly(position_, new_position);
-  ScheduleNextGpsPoll(differ ? poll_period_moving_millis_ :
-                               poll_period_stationary_millis_);
-  if (differ || new_position.error_code != Geoposition::ERROR_CODE_NONE) {
-    // Update if the new location is interesting or we have an error to report.
-    position_ = new_position;
-    NotifyCallback(position_);
-  }
-}
-
-void GpsLocationProviderLinux::ScheduleNextGpsPoll(int interval) {
-  weak_factory_.InvalidateWeakPtrs();
-  base::MessageLoop::current()->PostDelayedTask(
-      FROM_HERE,
-      base::Bind(&GpsLocationProviderLinux::DoGpsPollTask,
-                 weak_factory_.GetWeakPtr()),
-      base::TimeDelta::FromMilliseconds(interval));
-}
-
-LocationProvider* NewSystemLocationProvider() {
-  return new GpsLocationProviderLinux(LibGps::New);
-}
-
-}  // namespace content