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// Copyright (c) 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.
#ifndef DEVICE_HID_HID_CONNECTION_LINUX_H_
#define DEVICE_HID_HID_CONNECTION_LINUX_H_
#include <queue>
#include "base/files/file.h"
#include "base/message_loop/message_pump_libevent.h"
#include "device/hid/hid_connection.h"
namespace device {
class HidConnectionLinux : public HidConnection,
public base::MessagePumpLibevent::Watcher {
public:
HidConnectionLinux(HidDeviceInfo device_info, std::string dev_node);
// HidConnection implementation.
virtual void PlatformRead(scoped_refptr<net::IOBufferWithSize> buffer,
const IOCallback& callback) OVERRIDE;
virtual void PlatformWrite(uint8_t report_id,
scoped_refptr<net::IOBufferWithSize> buffer,
const IOCallback& callback) OVERRIDE;
virtual void PlatformGetFeatureReport(
uint8_t report_id,
scoped_refptr<net::IOBufferWithSize> buffer,
const IOCallback& callback) OVERRIDE;
virtual void PlatformSendFeatureReport(
uint8_t report_id,
scoped_refptr<net::IOBufferWithSize> buffer,
const IOCallback& callback) OVERRIDE;
// base::MessagePumpLibevent::Watcher implementation.
virtual void OnFileCanReadWithoutBlocking(int fd) OVERRIDE;
virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE;
private:
friend class base::RefCountedThreadSafe<HidConnectionLinux>;
virtual ~HidConnectionLinux();
void Disconnect();
void Flush();
void ProcessInputReport(scoped_refptr<net::IOBufferWithSize> buffer);
void ProcessReadQueue();
base::File device_file_;
base::MessagePumpLibevent::FileDescriptorWatcher device_file_watcher_;
std::queue<PendingHidReport> pending_reports_;
std::queue<PendingHidRead> pending_reads_;
DISALLOW_COPY_AND_ASSIGN(HidConnectionLinux);
};
} // namespace device
#endif // DEVICE_HID_HID_CONNECTION_LINUX_H_
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