blob: 63a9d6230f46739b64aee381b0057f02e9a8140b [file] [log] [blame]
// Copyright 2014 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/device_sensors/device_orientation_message_filter.h"
#include "content/browser/device_sensors/device_inertial_sensor_service.h"
#include "content/common/device_sensors/device_orientation_messages.h"
namespace content {
DeviceOrientationMessageFilter::DeviceOrientationMessageFilter()
: BrowserMessageFilter(DeviceOrientationMsgStart),
is_started_(false) {
}
DeviceOrientationMessageFilter::~DeviceOrientationMessageFilter() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
if (is_started_)
DeviceInertialSensorService::GetInstance()->RemoveConsumer(
CONSUMER_TYPE_ORIENTATION);
}
bool DeviceOrientationMessageFilter::OnMessageReceived(
const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(DeviceOrientationMessageFilter, message)
IPC_MESSAGE_HANDLER(DeviceOrientationHostMsg_StartPolling,
OnDeviceOrientationStartPolling)
IPC_MESSAGE_HANDLER(DeviceOrientationHostMsg_StopPolling,
OnDeviceOrientationStopPolling)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void DeviceOrientationMessageFilter::OnDeviceOrientationStartPolling() {
DCHECK(!is_started_);
if (is_started_)
return;
is_started_ = true;
DeviceInertialSensorService::GetInstance()->AddConsumer(
CONSUMER_TYPE_ORIENTATION);
DidStartDeviceOrientationPolling();
}
void DeviceOrientationMessageFilter::OnDeviceOrientationStopPolling() {
DCHECK(is_started_);
if (!is_started_)
return;
is_started_ = false;
DeviceInertialSensorService::GetInstance()->RemoveConsumer(
CONSUMER_TYPE_ORIENTATION);
}
void DeviceOrientationMessageFilter::DidStartDeviceOrientationPolling() {
Send(new DeviceOrientationMsg_DidStartPolling(
DeviceInertialSensorService::GetInstance()->
GetSharedMemoryHandleForProcess(
CONSUMER_TYPE_ORIENTATION,
PeerHandle())));
}
} // namespace content