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// Copyright 2015 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_absolute_message_filter.h"
#include "content/browser/device_sensors/device_inertial_sensor_service.h"
#include "content/common/device_sensors/device_orientation_messages.h"
namespace content {
DeviceOrientationAbsoluteMessageFilter::DeviceOrientationAbsoluteMessageFilter()
: BrowserMessageFilter(DeviceOrientationMsgStart),
is_started_(false) {
}
DeviceOrientationAbsoluteMessageFilter::
~DeviceOrientationAbsoluteMessageFilter() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
if (is_started_) {
DeviceInertialSensorService::GetInstance()->RemoveConsumer(
CONSUMER_TYPE_ORIENTATION_ABSOLUTE);
}
}
bool DeviceOrientationAbsoluteMessageFilter::OnMessageReceived(
const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(DeviceOrientationAbsoluteMessageFilter, message)
IPC_MESSAGE_HANDLER(DeviceOrientationAbsoluteHostMsg_StartPolling,
OnStartPolling)
IPC_MESSAGE_HANDLER(DeviceOrientationAbsoluteHostMsg_StopPolling,
OnStopPolling)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void DeviceOrientationAbsoluteMessageFilter::OnStartPolling() {
DCHECK(!is_started_);
if (is_started_)
return;
is_started_ = true;
DeviceInertialSensorService::GetInstance()->AddConsumer(
CONSUMER_TYPE_ORIENTATION_ABSOLUTE);
DidStartPolling();
}
void DeviceOrientationAbsoluteMessageFilter::OnStopPolling() {
DCHECK(is_started_);
if (!is_started_)
return;
is_started_ = false;
DeviceInertialSensorService::GetInstance()->RemoveConsumer(
CONSUMER_TYPE_ORIENTATION_ABSOLUTE);
}
void DeviceOrientationAbsoluteMessageFilter::DidStartPolling() {
Send(new DeviceOrientationAbsoluteMsg_DidStartPolling(
DeviceInertialSensorService::GetInstance()->
GetSharedMemoryHandleForProcess(
CONSUMER_TYPE_ORIENTATION_ABSOLUTE,
PeerHandle())));
}
} // namespace content
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